CN110143499A - Method and device for determining elevator car position, and elevator distance measuring system - Google Patents

Abstract

The application relates to a method and device for determining the position of an elevator car, an elevator distance measuring system, computer equipment and a storage medium. The method includes: acquiring the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the car transceiver device and the second The path between the hoistway transceivers; according to the signal wave of the first path and the signal wave of the second path, calculate the first distance and the second distance; obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the first The third distance between the hoistway transceiver device and the origin; according to the first distance, the second distance, the third distance and the spacing, the current position of the elevator car is determined. By adopting the method, the purpose of determining the position of the elevator car through the geometric relationship of the acquired data is realized without being affected by external factors, thereby improving the measurement accuracy of the position of the elevator car.

Description

Method and device for determining elevator car position, and elevator distance measuring system

technical field

The present application relates to the technical field of elevators, in particular to a method and device for determining the position of an elevator car, an elevator distance measuring system, computer equipment and a storage medium.

Background technique

With the development of society, more and more buildings are built, and more and more elevators are installed. Elevators have gradually become an indispensable tool in people's daily life; in order to ensure the safety of elevator operation, Accurate determination of the position of the elevator car is becoming more and more important.

At present, in order to determine the position of the elevator car, the elevator controller generally calculates the position of the elevator car based on the encoder signal on the elevator traction machine or speed governor, and then performs leveling adjustment through the car top door area switch. However, during the actual operation of the elevator, the encoder is easily disturbed or malfunctions, causing distortion of the position judgment of the elevator car, resulting in low accuracy of the determined position of the elevator car.

Contents of the invention

Based on this, it is necessary to address the above technical problems and provide a method, device, elevator distance measuring system, computer equipment and storage medium for determining the position of the elevator car that can improve the measurement accuracy of the position of the elevator car.

A method for determining the position of an elevator car, the method comprising:

Obtain the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the path between the car transceiver device and the first hoistway transceiver device. The path between the two hoistway transceivers; the car transceiver is arranged on the top and/or bottom of the elevator car; the first hoistway transceiver and the second hoistway transceiver are vertically arranged at intervals in the elevator shaft on the side wall;

Calculate the first distance and the second distance according to the signal wave of the first path and the signal wave of the second path; the first distance is the distance between the car transceiver device and the first hoistway transceiver device, so The second distance is the distance between the car transceiver device and the second hoistway transceiver device;

Obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin;

Based on said first distance, second distance, third distance and spacing, the current position of the elevator car is determined.

In one of the embodiments, before acquiring the signal wave of the first path and the signal wave of the second path, it includes:

Determine the hoistway transceiver device located on the same side of the car transceiver device;

Calculate the distance between the hoistway transceiver and the car transceiver;

From the hoistway transceivers, the hoistway transceiver with the first distance is identified as the second hoistway transceiver, and the hoistway transceiver with the second distance is identified as the first hoistway transceiver;

and / or,

Determine the hoistway transceiver device located on the same side of the car transceiver device;

Obtain the signal strength of the signal wave received by the hoistway transceiver device;

From the hoistway transceivers, the hoistway transceiver with the first signal strength is identified as the second hoistway transceiver, and the hoistway transceiver with the second signal strength is identified as the first hoistway transceiver.

In one of the embodiments, the obtaining the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin includes:

Obtain the device identification numbers of the first hoistway transceiver device and the second hoistway transceiver device respectively;

Query the pre-established distance table according to the device identification number; the distance table records the distance between two adjacent hoistway transceivers, and the distance between different hoistway transceivers and the origin;

Obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin from the distance table.

In one of the embodiments, the determining the current position of the elevator car according to the first distance, the second distance, the third distance and the distance includes:

According to the first distance, the second distance and the spacing, calculate the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located;

adding the vertical distance and the third distance to obtain the target vertical distance between the origin and the car plane where the car transceiver device is located;

The current position of the elevator car is determined based on the target vertical distance.

In one of the embodiments, the calculation of the vertical distance between the first hoistway transceiver device and the plane of the car where the car transceiver device is located according to the first distance, the second distance and the spacing includes:

Use the following formula to calculate the vertical distance between the first hoistway transceiver and the car plane where the car transceiver is located:

d = d ₁ cos θ;

Wherein, d1 is the _first distance, _d2 is the _second distance, S2 is the distance between the first hoistway transceiver and the second hoistway transceiver, and θ is the distance between the first hoistway and the first hoistway. The included angle between the transceiver device and the straight line where the second hoistway transceiver device is located, d is the vertical distance between the first hoistway transceiver device and the plane of the car where the car transceiver device is located.

In one embodiment, the method also includes:

The current position of the elevator car is sent to an elevator controller; the elevator controller is configured to perform a corresponding elevator control operation according to the current position of the elevator car.

A device for determining the position of an elevator car, said device comprising:

The signal wave acquiring module is used to acquire the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the The path between the car transceiver and the second hoistway transceiver; the car transceiver is arranged on the top and/or bottom of the elevator car; the first hoistway transceiver and the second hoistway transceiver are in the vertical direction set at intervals on the side wall of the elevator shaft;

A distance calculation module, configured to calculate a first distance and a second distance according to the signal wave of the first path and the signal wave of the second path; the first distance is the distance between the car transceiver device and the first hoistway The distance between the transceiver device, the second distance is the distance between the car transceiver device and the second hoistway transceiver device;

A distance acquiring module, configured to acquire the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin;

A position determining module, configured to determine the current position of the elevator car according to the first distance, the second distance, the third distance and the distance.

A distance measuring system for an elevator, comprising: a car transceiver, a first shaft transceiver, a second shaft transceiver, an elevator distance measuring device, and an elevator controller; the car transceiver is arranged on the top of the elevator car and/or Bottom; the first hoistway transceiver device and the second hoistway transceiver device are arranged at intervals on the side wall of the elevator shaft in the vertical direction; the elevator distance measuring equipment is respectively connected to the car transceiver device and the first hoistway transceiver device , The second hoistway transceiver device is connected to the elevator controller;

The car transceiver device is used to transmit signal waves to the first hoistway transceiver device and the second hoistway transceiver device, or receive signal waves transmitted by the first hoistway transceiver device and the second hoistway transceiver device;

The elevator distance measuring device is used to perform the method for determining the position of the elevator car described above;

The elevator controller is configured to receive the current position of the elevator car sent by the elevator distance measuring device, and perform corresponding elevator control operations according to the current position of the elevator car.

A computer device, comprising a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

Obtain the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the path between the car transceiver device and the first hoistway transceiver device. The path between the two hoistway transceivers; the car transceiver is arranged on the top and/or bottom of the elevator car; the first hoistway transceiver and the second hoistway transceiver are vertically arranged at intervals in the elevator shaft on the side wall;

Calculate the first distance and the second distance according to the signal wave of the first path and the signal wave of the second path; the first distance is the distance between the car transceiver device and the first hoistway transceiver device, so The second distance is the distance between the car transceiver device and the second hoistway transceiver device;

Obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin;

Based on said first distance, second distance, third distance and spacing, the current position of the elevator car is determined.

A computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

Obtain the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the path between the car transceiver device and the first hoistway transceiver device. The path between the two hoistway transceivers; the car transceiver is arranged on the top and/or bottom of the elevator car; the first hoistway transceiver and the second hoistway transceiver are vertically arranged at intervals in the elevator shaft on the side wall;

Calculate the first distance and the second distance according to the signal wave of the first path and the signal wave of the second path; the first distance is the distance between the car transceiver device and the first hoistway transceiver device, so The second distance is the distance between the car transceiver device and the second hoistway transceiver device;

Obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin;

Based on said first distance, second distance, third distance and spacing, the current position of the elevator car is determined.

The above method and device for determining the position of the elevator car, the elevator distance measuring system, the computer equipment and the storage medium, by setting the car transceiver device on the top and/or bottom of the elevator car, and connecting the first hoistway transceiver device and the second hoistway The transceivers are vertically arranged at intervals on the sidewall of the elevator shaft to measure the first distance and the second distance; The third distance from the origin; combined with the geometric relationship of the first distance, the second distance, the distance, and the third distance, the current position of the elevator car is determined; the purpose of determining the position of the elevator car through the geometric relationship of the acquired data is realized, without It will be affected by external factors, thereby improving the measurement accuracy of the elevator car position, and avoiding the defects of the traditional method of measuring the elevator car position through the encoder, because the encoder is easily disturbed or malfunctions, causing the elevator car position to be distorted.

Description of drawings

Fig. 1 is an application scenario diagram of a method for determining the position of an elevator car in an embodiment;

Fig. 2 is a schematic flow chart of a method for determining the position of an elevator car in one embodiment;

Fig. 3 is a measurement schematic diagram of the position of the elevator car in one embodiment;

Fig. 4 is a structural block diagram of a device for determining the position of an elevator car in an embodiment;

Figure 5 is an internal block diagram of a computer device in one embodiment.

Detailed ways

In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

The method for determining the position of the elevator car provided in this application can be applied to the application environment shown in FIG. 1 . The application environment includes the car transceiver device, hoistway transceiver device, elevator distance measuring equipment and elevator control; wherein, the car transceiver device can be a high-precision radar such as millimeter wave radar, and can be set on the top of the elevator car (such as TX1), Used to transmit or receive signal waves; the hoistway transceiver device can be a high-precision radar such as a millimeter-wave radar, and can be arranged on the side wall of the elevator shaft at intervals in the vertical direction (such as RX1, RX2, RX3... RXn ), used to transmit or receive signal waves; the elevator distance measuring equipment is respectively connected to the car transceiver device, hoistway transceiver device and elevator controller. During the up and down running of the elevator car, the elevator distance measuring equipment determines that the effective paths are the first path and the second path based on the signal strength of the signal wave received by the hoistway transceiver device or the car transceiver device, and then from the car transceiver device (TX1) or the first hoistway transceiver (RX1) obtains the signal wave of the first path, and obtains the signal wave of the second path from the car transceiver (TX1) or the second hoistway transceiver (RX2), and then calculates the first distance and the second distance; combined with the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin, the origin and the car where the car transceiver device is located can be calculated through mathematical operations. The vertical distance of the plane to determine the current position of the elevator car. The elevator distance measuring device is also used to send the current position of the elevator car to the elevator controller to trigger the elevator controller to perform corresponding elevator control operations based on the current position of the elevator car, such as controlling the elevator to stop at the corresponding floor; Other control operations can be performed on the elevator according to the actual situation, which is not limited here. Wherein, the hoistway transceiver device and the car transceiver device can also be high-precision ranging instruments such as laser rangefinders and infrared rangefinders, and the car transceiver device can also be arranged at the bottom of the elevator car; the elevator controller can be, but not limited to are personal computers, laptops, smartphones, tablets, and portable wearable devices of all kinds.

It should be noted that the shaft transceiver device and the car transceiver device are arranged in the elevator shaft, and the elevator distance measuring equipment and the elevator controller are respectively arranged outside the elevator shaft.

In one embodiment, as shown in Figure 2, a method for determining the position of an elevator car is provided, and the method is applied to the elevator distance measuring device in Figure 1 as an example for illustration, including the following steps:

Step S201, obtaining the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the car transceiver device and the second hoistway transceiver device The path between the devices; the car transceiver device is arranged on the top and/or bottom of the elevator car; the first shaft transceiver device and the second shaft transceiver device are arranged on the side wall of the elevator shaft at intervals in the vertical direction.

In this step, the car transceiver device can be a high-precision radar such as a millimeter-wave radar, and can be installed at any position on the top of the elevator car (such as TX1 in Figure 1), or at any position on the bottom of the elevator car. The hoistway transceiver (such as the first hoistway transceiver and the second hoistway transceiver) can be high-precision radars such as millimeter-wave radars, which are arranged on the same elevator shaft side wall at intervals in the vertical direction, and the size of the interval can be determined according to actual conditions. Adjustment. In addition, among the hoistway transceivers located on the same side of the car transceiver, the first hoistway transceiver and the second hoistway transceiver are used to identify two hoistway transceivers that are closer to the car transceiver, such as RX1 in Figure 1 , RX2; specifically, the second hoistway transceiver device refers to the hoistway transceiver device closest to the car transceiver device. Among the two hoistway transceivers that are closer to the car transceiver, the first path is used to represent the path between the car transceiver and the farther hoistway transceiver (such as the first hoistway transceiver), and the second The path is used to indicate the path between the car transceiver and the hoistway transceiver (such as the second hoistway transceiver) that is closer to it. It should be noted that the car transceiver device must be located directly above the hoistway transceiver device in the vertical direction, ensuring that the plane formed by the car transceiver device and any two hoistway transceiver devices is the same plane.

Specifically, referring to Fig. 1, the millimeter-wave radar transmitting device is installed on the top TX1 of the elevator car, and the vertically spaced positions RX1, RX2, RX3... RXn are installed on the side wall of the same elevator shaft The millimeter-wave radar receiving device ensures that the radar signal wave emitted by the millimeter-wave radar transmitting device can be received by at least two millimeter-wave radar receiving devices. During the operation of the elevator car, the millimeter-wave radar transmitting device transmits radar signal waves, and the elevator distance measuring device determines the distance between the millimeter-wave radar transmitting device and the millimeter-wave radar transmitting device. A millimeter-wave radar receiving device, which recognizes the millimeter-wave radar receiving device closer to the millimeter-wave radar transmitting device as the second hoistway transceiver, and recognizes the other millimeter-wave radar receiving device as the first hoistway transceiver; elevator distance measuring equipment The received radar signal wave is obtained from the first hoistway transceiver device as the signal wave of the first path; the received radar signal wave is obtained from the second hoistway transceiver device as the signal wave of the second path. It should be noted that if a millimeter-wave radar transmitting device is installed at the bottom of the elevator car, the subsequent implementation process is the same as above, and will not be repeated here.

Further, the positions of the millimeter-wave radar transmitting device and the radar-wave radar receiving device can be reversed, that is, the millimeter-wave radar receiving device is installed on the elevator car top TX1, and the positions RX1, RX1, RX2, RX3······· RXn is equipped with a millimeter-wave radar transmitter to ensure that the effective radar signal waves emitted by at least two millimeter-wave radar transmitters can be received by the millimeter-wave radar receiver. During the operation of the elevator car, the millimeter-wave radar transmitting device emits radar signal waves, and the elevator distance measuring equipment determines the two millimeters closest to the millimeter-wave radar receiving device in the hoistway transceiver device located on the same side of the millimeter-wave radar receiving device. Wave radar transmitting device, the millimeter wave radar transmitting device that is closer to the millimeter wave radar receiving device is identified as the second hoistway transceiver device, and the other millimeter wave radar transmitting device is identified as the first hoistway transceiver device; The wave radar receiving device obtains the two received radar signal waves, uses the radar signal wave with stronger signal strength as the signal wave of the second path, and uses the other radar signal wave as the signal wave of the first path.

Step S202, according to the signal wave of the first path and the signal wave of the second path, calculate the first distance and the second distance; the first distance is the distance between the car transceiver device and the first hoistway transceiver device, and the second distance is the car The distance between the transceiver device and the second hoistway transceiver device.

Specifically, referring to FIG. 1, the elevator distance measuring device calculates the distance between the car transceiver and the first hoistway transceiver as the first distance d1 according to the signal wave of the first path and in combination with the existing radar ranging principle; According to the signal wave of the second path, combined with the existing radar ranging principle, the distance between the car transceiver device and the second hoistway transceiver device is calculated as the second distance d2. In this way, in the elevator ranging system in Figure 1, the first distance and the second distance can be determined in real time as long as the signal wave of the first path and the signal wave of the second path are determined during the up and down movement of the elevator car .

Step S203, obtaining the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin.

In this step, the origin refers to the intersection of the plane where the top of the elevator shaft is located and the vertical direction of the shaft transceiver device provided on the side wall of the elevator shaft, such as RX1 in Figure 1; The vertical intersection point where the hoistway transceiver device is located on the side wall. Of course, in order to facilitate the staff to mark the position of the elevator car, the origin setting can also be adjusted according to the actual situation.

Specifically, the elevator distance measuring device can query the distance table that stores the distance between the hoistway transceiver device and the distance between the hoistway transceiver device and the origin in advance according to the first hoistway transceiver device and the second hoistway transceiver device, and obtain the first hoistway transceiver device and the second hoistway transceiver device. The spacing between the hoistway transceivers, and the third distance between the first hoistway transceiver and the origin.

Step S204, determine the current position of the elevator car according to the first distance, the second distance, the third distance and the spacing.

Specifically, based on the first distance, the second distance, the third distance and the spacing, the elevator distance measuring device obtains the vertical distance between the origin and the plane of the car where the car transceiver device is located through mathematical operations, and then determines the current position of the elevator car. In this embodiment, the third distance and spacing can be obtained by pre-measurement, so it is only necessary to measure the first distance and the second distance in real time, because the acquisition of the first distance and the second distance will not be affected by external factors, such as elevators Power failure, encoder failure, etc., and can be measured by high-precision instruments such as millimeter-wave radar, thereby improving the measurement accuracy of the elevator car position and avoiding the judgment distortion that is easy to occur when measuring the elevator car position through the encoder in the traditional method defect.

It should be noted that the executor of this application may be an elevator distance measuring device, and may also be selected and changed according to actual conditions, which is not limited in this application.

In the above method for determining the position of the elevator car, the car transceiver is arranged on the top and/or bottom of the elevator car, and the first hoistway transceiver and the second hoistway transceiver are arranged at intervals in the vertical direction on the elevator car. On the side wall of the hoistway to measure the first distance and the second distance; and obtain the pre-measured distance between the first hoistway transceiver and the second hoistway transceiver, and the third distance between the first hoistway transceiver and the origin; combined with the first The geometric relationship of distance, second distance, spacing, and third distance determines the current position of the elevator car; the purpose of determining the position of the elevator car through the geometric relationship of the acquired data is realized, and will not be affected by external factors, thereby improving The measurement accuracy of the position of the elevator car avoids the defects of the traditional method of measuring the position of the elevator car through the encoder, because the encoder is easily disturbed or malfunctions, which causes the defect of the judgment of the position of the elevator car to be distorted.

In one embodiment, the above step S201, before acquiring the signal wave of the first path and the signal wave of the second path, further includes: determining the hoistway transceiver device located on the same side of the car transceiver device; The distance between the compartment transceivers: From the hoistway transceivers, the hoistway transceiver with the first distance is identified as the second hoistway transceiver, and the hoistway transceiver with the second distance is identified as the first hoistway transceiver.

For example, referring to Figure 1, a millimeter-wave radar transmitter is installed on the top TX1 of the elevator car, and millimeter-wave radar is installed on the side walls of the elevator shaft at vertically spaced positions RX1, RX2, RX3... RXn Radar receiver. The millimeter wave radar receiving device located on the same side of the millimeter wave radar transmitting device TX1 sends the received radar signal waves to the elevator distance measuring device. The elevator ranging equipment calculates the distance between the millimeter-wave radar receiving device and the millimeter-wave radar transmitting device based on the received radar signal wave, compares the calculated distances, and identifies the millimeter-wave radar receiving device with the first distance as the second The hoistway transceiver device identifies the second-distance millimeter-wave radar receiver device as the first hoistway transceiver device.

Further, the elevator distance measuring device can also obtain the received signal waves from the hoistway transceiver device located on the same side of the car transceiver device, and compare the signal strengths of the acquired signal waves to transmit and receive the hoistway corresponding to the first signal strength. The device is identified as the second hoistway transceiver device, and the hoistway transceiver device corresponding to the second signal strength is identified as the first hoistway transceiver device. In this way, it is beneficial to subsequently acquire the signal wave of the first path between the car transceiver device and the first hoistway transceiver device, and the signal wave of the second path between the car transceiver device and the second hoistway transceiver device.

In one embodiment, the step S203 above, obtaining the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin, includes: obtaining the first hoistway transceiver device and the second hoistway transceiver device respectively. The device identification number of the hoistway transceiver device; query the pre-established distance table according to the device identification number; the distance table records the distance between two adjacent hoistway transceiver devices, and the distance between different hoistway transceiver devices and the origin; get the first from the distance table The distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin.

In this embodiment, the device identification number refers to identification information identifying the hoistway transceiver device, such as number and name. The distance between the hoistway transceiver devices (S1 and S2 in Figure 1) can be directly measured by high-precision measuring instruments such as laser range finders; based on the distance between the hoistway transceiver devices, the distances between different hoistway transceiver devices and the origin can be calculated, as shown in In Fig. 1, the distance between the hoistway transceiver device RX1 and the origin is S1, and the distance between the hoistway transceiver device RX2 and the origin is S1+S2. The distance between the hoistway transceiver device and the distance between the hoistway transceiver device and the origin measured in advance are stored in the distance table in the storage medium according to the device identification number. It is convenient to query the distance table based on the device identification number later, and the data you want to query can be obtained.

Further, referring to Fig. 1, the distance between the hoistway transceivers can also be obtained by the following method:

1. Arrange the millimeter-wave radar transmitting device on TX1 on the top of the elevator car, and measure the horizontal distance D between the millimeter-wave radar transmitting device and the side wall of the elevator shaft.

2. According to a certain interval S1, S2·······Sn, arrange the radar receiving device on the positions RX1, RX2, RX3·················································································································································································································································. , to ensure that the radar signal waves emitted by the millimeter-wave radar transmitting device can be received by at least two radar receiving devices; and directly measure the vertical distance S1 between RX1 and the plane where the top of the elevator shaft is located.

3. Run the elevator car to the bottom of the second radar receiving device RX2, so that both radar receiving devices RX1 and RX2 can receive effective radar signal waves, and calculate the distance between radar receiving devices RX1 and RX2:

4. Calculate S1, S2, S3, S4...Sn respectively in this way, so as to obtain the specific position and corresponding serial number information of the radar receiving device RX1, RX2, RX3...RXn, No need for manual measurements.

5. Combining S1, S2, S3, S4······Sn, calculate the vertical distance between each radar receiving device RX1, RX2, RX3·······RXn and the plane where the top of the elevator shaft is located, and record it.

It should be noted that in the third point above, the elevator car can also be run to the bottom end of the elevator shaft and the distances S1, S2, S3, S4...Sn can be calculated in the same way.

In one embodiment, the above step S204, determining the current position of the elevator car according to the first distance, the second distance, the third distance and the distance, includes: calculating the first distance according to the first distance, the second distance and the distance The vertical distance between the hoistway transceiver device and the car plane where the car transceiver device is located; add the vertical distance and the third distance to obtain the target vertical distance between the origin and the car plane where the car transceiver device is located; determine the elevator according to the target vertical distance The current position of the car.

Specifically, with reference to Fig. 1, the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located is adopted as follows:

d = d ₁ cos θ;

Wherein, d1 is the _first distance, _d2 is the _second distance, S2 is the spacing between the first hoistway transceiver and the second hoistway transceiver, θ is the first distance and the first hoistway transceiver and the second hoistway transceiver The included angle between the straight lines, d is the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located.

Then, the target vertical distance between the origin and the car plane where the car transceiver device is located is:

S=d+S ₁ ;

Wherein, S ₁ represents the third distance between the first hoistway transceiver device and the origin.

Further, with reference to Fig. 3, the car transceiver device can also be located at the bottom of the elevator car (TX1 in Fig. 3), and the target vertical distance between the origin and the car plane where the car transceiver device is located is calculated by the same method, and then To determine the current position of the elevator car, the specific implementation process is as follows:

As shown in Figure 3, the millimeter-wave radar transmitter is installed on the bottom TX1 of the elevator car, and the radar is installed on the positions RX1, RX2, RX3... RXn separated by vertical intervals on the side wall of the same elevator shaft The receiving device ensures that the radar signal waves emitted by the millimeter-wave radar transmitting device can be received by at least two radar receiving devices. During the operation of the elevator car, the millimeter-wave radar transmitting device transmits radar signal waves, and the elevator ranging equipment determines the two radars that are closer to the millimeter-wave radar transmitting device in the radar receiving device located on the same side of the millimeter-wave radar transmitting device The receiving device recognizes the radar receiving device closer to the millimeter-wave radar transmitting device as the second hoistway transceiver, and recognizes the other radar receiving device as the first hoistway transceiver; obtains the received data from the first hoistway transceiver The radar signal wave is used as the signal wave of the first path; the received radar signal wave is obtained from the second hoistway transceiver device as the signal wave of the second path; according to the signal wave of the first path and the signal wave of the second path , combined with the existing radar ranging principle, calculate the first distance d1 and the second distance d2; look up the distance table according to the first hoistway transceiver device and the second hoistway transceiver device, and obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device distance, and the third distance between the first hoistway transceiver device and the origin (such as the bottom of the elevator shaft); based on the first distance, the second distance, the third distance and the distance, combined with the law of cosines, the origin and the car where the car transceiver device is located The target vertical distance of the plane, and then determine the current position of the elevator car. The specific calculation process is the same as the above embodiment.

It should be noted that the positions of the millimeter-wave radar transmitting device and the radar receiving device can be reversed, that is, the radar receiving device is installed on TX1 at the bottom of the elevator car, and the millimeter-wave radar is installed on RX1, RX2, RX3... RXn The transmitting device ensures that the effective radar signals transmitted by at least two millimeter-wave radar transmitting devices can be received by the radar receiving device. The specific implementation process is the same as the above embodiment, and will not be repeated here.

In one embodiment, the method for determining the position of the elevator car further includes: sending the current position of the elevator car to an elevator controller; and the elevator controller is used to perform corresponding elevator control operations according to the current position of the elevator car. For example, control the elevator to stop at the corresponding floor, control the elevator to stop at the current location, etc. Of course, other control operations can also be performed on the elevator according to actual conditions.

It should be understood that although the various steps in the flow chart of FIG. 2 are displayed sequentially as indicated by the arrows, these steps are not necessarily executed sequentially in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least some of the steps in FIG. 2 may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but may be executed at different times. The execution of these sub-steps or stages The order is not necessarily performed sequentially, but may be performed alternately or alternately with at least a part of other steps or sub-steps or stages of other steps.

In one embodiment, as shown in FIG. 4 , a device for determining the position of an elevator car is provided, including: a signal wave acquisition module 410, a distance calculation module 420, a distance acquisition module 430 and a position determination module 440, wherein:

The signal wave acquiring module 410 is used to acquire the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the car transceiver device The path between the second hoistway transceiver device; the car transceiver device is arranged on the top and/or bottom of the elevator car; the first hoistway transceiver device and the second hoistway transceiver device are arranged on the elevator shaft side wall at intervals in the vertical direction superior.

The distance calculation module 420 is used to calculate the first distance and the second distance according to the signal wave of the first path and the signal wave of the second path; the first distance is the distance between the car transceiver and the first hoistway transceiver, and the second The distance is the distance between the car transceiver device and the second hoistway transceiver device.

The distance acquiring module 430 is configured to acquire the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin.

A position determining module 440, configured to determine the current position of the elevator car according to the first distance, the second distance, the third distance and the distance.

In one embodiment, the device for determining the position of the elevator car further includes a device identification module, which is used to determine the location on the same side of the car transceiver device before the signal wave acquisition module acquires the signal wave of the first path and the signal wave of the second path. The hoistway transceiver device; respectively calculate the distance between the hoistway transceiver device and the car transceiver device; from the hoistway transceiver device, the hoistway transceiver device with the first distance is identified as the second hoistway transceiver device, and the hoistway transceiver device with the second distance is identified as the second hoistway transceiver device A hoistway transceiver.

In one embodiment, the device identification module is also used for the signal wave acquisition module to determine the hoistway transceiver device located on the same side of the car transceiver device before the signal wave acquisition module acquires the signal wave of the first path and the signal wave of the second path; The signal strength of the received signal wave; from the hoistway transceivers, the hoistway transceiver with the first signal strength is identified as the second hoistway transceiver, and the hoistway transceiver with the second signal strength is identified as the first hoistway transceiver.

In one embodiment, the distance acquisition module is also used to respectively acquire the device identification numbers of the first hoistway transceiver device and the second hoistway transceiver device; query the pre-established distance table according to the device identification number; the distance table records two adjacent The distance between the hoistway transceivers, and the distances between different hoistway transceivers and the origin; the distance between the first hoistway transceiver and the second hoistway transceiver, and the third distance between the first hoistway transceiver and the origin are obtained from the distance table.

In one embodiment, the position determination module is also used to calculate the vertical distance between the first hoistway transceiver device and the car plane of the car transceiver device according to the first distance, the second distance and the distance; compare the vertical distance with the third distance Add, get the target vertical distance between the origin and the car plane where the car transceiver device is located; determine the current position of the elevator car according to the target vertical distance.

In one embodiment, the position determination module is also used to calculate the vertical distance between the first hoistway transceiver device and the plane of the car where the car transceiver device is located by using the following formula:

d = d ₁ cos θ;

Wherein, d1 is the _first distance, _d2 is the _second distance, S2 is the spacing between the first hoistway transceiver and the second hoistway transceiver, θ is the first distance and the first hoistway transceiver and the second hoistway transceiver The included angle between the straight lines, d is the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located.

In one embodiment, the device for determining the position of the elevator car further includes a position sending module, configured to send the current position of the elevator car to the elevator controller; the elevator controller is used to perform corresponding elevator control according to the current position of the elevator car operate.

In each of the above-mentioned embodiments, by arranging the car transceiver device on the top and/or bottom of the elevator car, and arranging the first hoistway transceiver device and the second hoistway transceiver device on the side wall of the elevator shaft at intervals in the vertical direction, To measure the first distance and the second distance; and obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin; combine the first distance, the second distance, the distance, The geometric relationship of the third distance determines the current position of the elevator car; the purpose of determining the position of the elevator car through the geometric relationship of the acquired data is realized, and will not be affected by external factors, thereby improving the measurement accuracy of the elevator car position , avoiding the traditional method of measuring the position of the elevator car through the encoder, and the defect that the position of the elevator car is distorted due to the encoder being easily disturbed or malfunctioning.

For the specific limitations of the device for determining the position of the elevator car, please refer to the above-mentioned definition of the method for determining the position of the elevator car, which will not be repeated here. Each module in the above-mentioned device for determining the position of the elevator car can be fully or partially realized by software, hardware and combinations thereof. The above-mentioned modules can be embedded in or independent of the processor in the computer device in the form of hardware, and can also be stored in the memory of the computer device in the form of software, so that the processor can invoke and execute the corresponding operations of the above-mentioned modules.

In one embodiment, as shown in Figure 1, an elevator distance measuring system is provided, comprising: a car transceiver, a first hoistway transceiver, a second hoistway transceiver, an elevator distance measuring device and an elevator controller; The car transceiver device is arranged on the top and/or bottom of the elevator car; the first shaft transceiver device and the second shaft transceiver device are arranged on the side wall of the elevator shaft at intervals in the vertical direction; the elevator distance measuring equipment is respectively connected to the car The transceiver device, the first hoistway transceiver device, the second hoistway transceiver device and the elevator controller are connected;

The car transceiver device is used to transmit signal waves to the first hoistway transceiver device and the second hoistway transceiver device, or receive signal waves transmitted by the first hoistway transceiver device and the second hoistway transceiver device;

Elevator ranging equipment, used to perform the method for determining the position of the elevator car described above;

The elevator controller is used to receive the current position of the elevator car sent by the elevator distance measuring device, and perform corresponding elevator control operations according to the current position of the elevator car.

It should be noted that the elevator ranging system may also be as shown in FIG. 3 .

In this embodiment, the elevator ranging system achieves the purpose of determining the position of the elevator car through the geometric relationship of the acquired data, and will not be affected by external factors, thereby improving the accuracy of the measurement of the position of the elevator car, and avoiding the traditional method through coding. The encoder measures the position of the elevator car, because the encoder is susceptible to interference or failure, which causes the defect of distorted judgment of the position of the elevator car.

In one embodiment, an elevator car is provided, the elevator car is configured with the above-mentioned elevator ranging system. For example, the elevator ranging system shown in FIG. 1 or FIG. 3 .

In one embodiment, a computer device is provided, and the computer device may be a server, and its internal structure may be as shown in FIG. 5 . The computer device includes a processor, memory, network interface and database connected by a system bus. Wherein, the processor of the computer device is used to provide calculation and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, computer programs and databases. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The database of the computer equipment is used to store the distance between two adjacent hoistway transceivers, and the distances between different hoistway transceivers and the origin. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by a processor, a method for determining the position of an elevator car is implemented.

Those skilled in the art can understand that the structure shown in Figure 5 is only a block diagram of a partial structure related to the solution of the application, and does not constitute a limitation to the elevator distance measuring equipment applied to the solution of the application. The specific elevator The ranging device may include more or fewer components than shown in the figures, or combine certain components, or have a different arrangement of components.

In one embodiment, a computer device is provided, including a memory and a processor, the memory stores a computer program, and the processor implements the following steps when executing the computer program:

Obtain the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the car transceiver device and the second hoistway transceiver device The path between; the car transceiver is arranged on the top and/or bottom of the elevator car; the first hoistway transceiver and the second hoistway transceiver are arranged on the side wall of the elevator shaft at intervals in the vertical direction;

According to the signal wave of the first path and the signal wave of the second path, the first distance and the second distance are calculated; the first distance is the distance between the car transceiver device and the first hoistway transceiver device, and the second distance is the distance between the car transceiver device and The distance of the second hoistway transceiver device;

Obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin;

Based on the first distance, the second distance, the third distance and the spacing, the current position of the elevator car is determined.

In one embodiment, when the processor executes the computer program, the following steps are also implemented: before obtaining the signal wave of the first path and the signal wave of the second path, determine the hoistway transceiver device located on the same side of the car transceiver device; respectively calculate the hoistway The distance between the transceiver device and the car transceiver device; from the hoistway transceiver devices, the hoistway transceiver device with the first distance is identified as the second hoistway transceiver device, and the hoistway transceiver device with the second distance is identified as the first hoistway transceiver device.

In one embodiment, when the processor executes the computer program, the following steps are also implemented: before obtaining the signal wave of the first path and the signal wave of the second path, determine the hoistway transceiver device located on the same side of the car transceiver device; obtain the hoistway transceiver The signal strength of the signal wave received by the device; from the hoistway transceivers, the hoistway transceiver with the first signal strength is identified as the second hoistway transceiver, and the hoistway transceiver with the second signal strength is identified as the first hoistway transceiver.

In one embodiment, the following steps are also implemented when the processor executes the computer program: respectively obtain the device identification numbers of the first hoistway transceiver device and the second hoistway transceiver device; query the pre-established distance table according to the device identification number; the distance table records The distance between two adjacent hoistway transceivers, and the distance between different hoistway transceivers and the origin; the distance between the first hoistway transceiver and the second hoistway transceiver, and the distance between the first hoistway transceiver and the origin are obtained from the distance table. Three distances.

In one embodiment, when the processor executes the computer program, the following steps are also implemented: according to the first distance, the second distance and the spacing, calculate the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located; Add the third distance to obtain the target vertical distance between the origin and the car plane where the car transceiver device is located; determine the current position of the elevator car according to the target vertical distance.

In one embodiment, when the processor executes the computer program, the following steps are also implemented: the following formula is used to calculate the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located:

d = d ₁ cos θ;

Wherein, d1 is the _first distance, _d2 is the _second distance, S2 is the spacing between the first hoistway transceiver and the second hoistway transceiver, θ is the first distance and the first hoistway transceiver and the second hoistway transceiver The included angle between the straight lines, d is the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located.

In one embodiment, when the processor executes the computer program, the following steps are also implemented: sending the current position of the elevator car to the elevator controller; the elevator controller is used to perform corresponding elevator control operations according to the current position of the elevator car.

In each of the above embodiments, the elevator distance measuring device realizes the purpose of determining the position of the elevator car through the geometric relationship of the acquired data through the computer program running on the processor, and will not be affected by external factors, thereby improving the accuracy of the position of the elevator car. The measurement accuracy avoids the defects of the traditional method of measuring the position of the elevator car through the encoder, which is easily disturbed or malfunctioned, which causes the distortion of the judgment of the position of the elevator car.

In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored, and when the computer program is executed by a processor, the following steps are implemented:

Obtain the signal wave of the first path and the signal wave of the second path; the first path is the path between the car transceiver device and the first hoistway transceiver device, and the second path is the car transceiver device and the second hoistway transceiver device The path between; the car transceiver is arranged on the top and/or bottom of the elevator car; the first hoistway transceiver and the second hoistway transceiver are arranged on the side wall of the elevator shaft at intervals in the vertical direction;

According to the signal wave of the first path and the signal wave of the second path, the first distance and the second distance are calculated; the first distance is the distance between the car transceiver device and the first hoistway transceiver device, and the second distance is the distance between the car transceiver device and The distance of the second hoistway transceiver device;

Obtain the distance between the first hoistway transceiver device and the second hoistway transceiver device, and the third distance between the first hoistway transceiver device and the origin;

Based on the first distance, the second distance, the third distance and the spacing, the current position of the elevator car is determined.

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: before obtaining the signal wave of the first path and the signal wave of the second path, determine the hoistway transceiver device located on the same side of the car transceiver device; The distance between the hoistway transceiver device and the car transceiver device; from the hoistway transceiver device, the hoistway transceiver device with the first distance is identified as the second hoistway transceiver device, and the hoistway transceiver device with the second distance is identified as the first hoistway transceiver device .

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: before obtaining the signal wave of the first path and the signal wave of the second path, determine the hoistway transceiver device located on the same side of the car transceiver device; obtain the hoistway The signal strength of the signal wave received by the transceiver device; from the hoistway transceiver devices, the hoistway transceiver device with the first signal strength is identified as the second hoistway transceiver device, and the hoistway transceiver device with the second signal strength is identified as the first hoistway transceiver device .

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: respectively obtaining the device identification numbers of the first hoistway transceiver device and the second hoistway transceiver device; querying the pre-established distance table according to the device identification number; distance table record There is the distance between two adjacent hoistway transceivers, and the distance between different hoistway transceivers and the origin; the distance between the first hoistway transceiver and the second hoistway transceiver, and the distance between the first hoistway transceiver and the origin are obtained from the distance table third distance.

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: according to the first distance, the second distance and the spacing, calculate the vertical distance between the first hoistway transceiver device and the plane of the car where the car transceiver device is located; The distance and the third distance are added to obtain the target vertical distance between the origin and the car plane where the car transceiver device is located; the current position of the elevator car is determined according to the target vertical distance.

In one embodiment, when the computer program is executed by the processor, the following steps are also implemented: the following formula is used to calculate the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located:

d = d ₁ cos θ;

Wherein, d1 is the _first distance, _d2 is the _second distance, S2 is the spacing between the first hoistway transceiver and the second hoistway transceiver, θ is the first distance and the first hoistway transceiver and the second hoistway transceiver The included angle between the straight lines, d is the vertical distance between the first hoistway transceiver device and the car plane where the car transceiver device is located.

In one embodiment, when the computer program is executed by the processor, the following steps are further implemented: sending the current position of the elevator car to the elevator controller; the elevator controller is used to perform corresponding elevator control operations according to the current position of the elevator car.

In each of the above-mentioned embodiments, the computer-readable storage medium realizes the purpose of determining the position of the elevator car through the geometric relationship of the acquired data through the computer program stored in it, and will not be affected by external factors, thereby improving the measurement of the position of the elevator car. Accuracy avoids the defects of the traditional method of measuring the position of the elevator car through the encoder, because the encoder is easily disturbed or malfunctions, which causes the defect of the judgment of the position of the elevator car to be distorted.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the computer programs can be stored in a non-volatile computer-readable memory In the medium, when the computer program is executed, it may include the processes of the embodiments of the above-mentioned methods. Wherein, any references to memory, storage, database or other media used in the various embodiments provided in the present application may include non-volatile and/or volatile memory. Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Chain Synchlink DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.

The above-mentioned embodiments only represent several implementation modes of the present application, and the description thereof is relatively specific and detailed, but it should not be construed as limiting the scope of the patent for the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (10)

1. a kind of determination method of elevator car position, which comprises

Obtain the signal wave of first path and the signal wave in the second path；The first path is carriage R-T unit and the first well Path between road R-T unit, road of second path between the carriage R-T unit and the second hoistway R-T unit Diameter；The carriage R-T unit is arranged in elevator car roof and/or bottom；The first hoistway R-T unit and the second hoistway R-T unit is spaced apart and arranged in the vertical direction on elevator shaft side wall；

According to the signal wave of the signal wave of the first path and the second path, first distance and second distance are calculated；Described One distance is the carriage R-T unit at a distance from the first hoistway R-T unit, and the second distance is carriage receipts Transmitting apparatus is at a distance from the second hoistway R-T unit；

Obtain the spacing and first hoistway transmitting-receiving of the first hoistway R-T unit and the second hoistway R-T unit The third distance of device and origin；

According to the first distance, second distance, third distance and spacing, the current location of lift car is determined.

2. the method according to claim 1, wherein the signal wave for obtaining first path and second path Before signal wave, comprising:

Determine the hoistway R-T unit for being located at carriage R-T unit the same side；

The hoistway R-T unit is calculated separately at a distance from the carriage R-T unit；

From the hoistway R-T unit, the hoistway R-T unit of distance first is identified as the second hoistway R-T unit, it will be away from Hoistway R-T unit from second is identified as the first hoistway R-T unit；

And/or

Determine the hoistway R-T unit for being located at carriage R-T unit the same side；

Obtain the signal strength for the signal wave that the hoistway R-T unit receives；

From the hoistway R-T unit, the hoistway R-T unit of signal strength first is identified as the second hoistway R-T unit, The hoistway R-T unit of signal strength second is identified as the first hoistway R-T unit.

3. the method according to claim 1, wherein described obtain the first hoistway R-T unit and described the The third distance of the spacing of two hoistway R-T units and the first hoistway R-T unit and origin, comprising:

The device identification number of the first hoistway R-T unit and the second hoistway R-T unit is obtained respectively；

According to described device identification number inquiry pre-establish apart from table；It is described to have hoistway transmitting-receiving adjacent two-by-two apart from table record The spacing of device, and different hoistway R-T units are at a distance from origin；

From the spacing for obtaining the first hoistway R-T unit and the second hoistway R-T unit in table, Yi Jisuo State the third distance of the first hoistway R-T unit Yu the origin.

4. the method according to claim 1, wherein it is described according to the first distance, second distance, third away from From and spacing, determine the current location of lift car, comprising:

According to the first distance, second distance and spacing, calculates the first hoistway R-T unit and carriage transmitting-receiving fills The vertical range of carriage plane where setting；

The vertical range is added with the third distance, obtains sedan-chair where the origin and the carriage R-T unit The target vertical distance of compartment plane；

The current location of lift car is determined according to the target vertical distance.

5. according to the method described in claim 4, it is characterized in that, described according to the first distance, second distance and spacing, The vertical range of carriage plane where calculating the first hoistway R-T unit and the carriage R-T unit, comprising:

It is vertical with carriage plane where the carriage R-T unit that the first hoistway R-T unit is calculated using following formula Distance:

D=d₁cosθ；

Wherein, d₁For first distance, d₂For second distance, S₂It is received and dispatched for the first hoistway R-T unit and second hoistway The spacing of device, θ be straight line where the first distance and the first hoistway R-T unit and the second hoistway R-T unit it Between angle, d is the vertical range of carriage plane where the first hoistway R-T unit and the carriage R-T unit.

6. method according to any one of claims 1 to 5, which is characterized in that the method also includes:

The current location of the lift car is sent to electric life controller；The electric life controller is used for according to the elevator car The current location in compartment executes corresponding elevator control operations.

7. a kind of determining device of elevator car position, which is characterized in that described device includes:

Signal wave obtains module, for obtaining the signal wave of first path and the signal wave in the second path；The first path is Path between carriage R-T unit and the first hoistway R-T unit, second path are the carriage R-T unit and second Path between hoistway R-T unit；The carriage R-T unit is arranged in elevator car roof and/or bottom；First well Road R-T unit and the second hoistway R-T unit are spaced apart and arranged in the vertical direction on elevator shaft side wall；

Distance calculation module, for calculating first distance according to the signal wave of the first path and the signal wave in the second path And second distance；The first distance is the carriage R-T unit at a distance from the first hoistway R-T unit, described the Two distances are the carriage R-T unit at a distance from the second hoistway R-T unit；

Distance obtains module, for obtaining the spacing of the first hoistway R-T unit and the second hoistway R-T unit, with And the third distance of the first hoistway R-T unit and origin；

Position determination module, for determining lift car according to the first distance, second distance, third distance and spacing Current location.

8. a kind of elevator range-measurement system characterized by comprising carriage R-T unit, the first hoistway R-T unit, the second hoistway R-T unit, elevator distance-measuring equipment and electric life controller；The carriage R-T unit is arranged at elevator car roof and/or bottom Portion；The first hoistway R-T unit and the second hoistway R-T unit are spaced apart and arranged in elevator shaft side wall in the vertical direction On；The elevator distance-measuring equipment is separately connected the carriage R-T unit, the first hoistway R-T unit, the second hoistway R-T unit It is connected with electric life controller；

The carriage R-T unit is used to emit signal wave to the first hoistway R-T unit, the second hoistway R-T unit, or Receive the signal wave of the first hoistway R-T unit, the transmitting of the second hoistway R-T unit；

The elevator distance-measuring equipment, the determination side for elevator car position described in any one of perform claim requirement 1 to 6 Method；

The electric life controller, for receiving the current location for the lift car that the elevator distance-measuring equipment is sent, and according to institute The current location for stating lift car executes corresponding elevator control operations.

9. a kind of computer equipment, including memory and processor, the memory are stored with computer program, feature exists In the step of processor realizes any one of claims 1 to 6 the method when executing the computer program.

10. a kind of computer readable storage medium, is stored thereon with computer program, which is characterized in that the computer program The step of method described in any one of claims 1 to 6 is realized when being executed by processor.