CN105197715B - The fault diagnosis method and system of light curtain protective device - Google Patents

Abstract

The invention relates to a fault diagnosis method and system of a light curtain protection device, wherein the fault diagnosis method of the light curtain protection device includes the following steps: receiving a light curtain signal through a first signal circuit; obtaining light spots of the light curtain according to the light curtain signal According to the blocking state of the light spot, it is judged whether there is a fault in the light curtain, and when the judgment result is yes, the fault type of the light curtain is obtained; the fault type of the light curtain is sent to the maintenance terminal through the fourth signal circuit. Through the light curtain signal received by the door control board, the blocking state of the light spot is obtained, and the fault type of the light curtain is detected according to the blocking state of the light point, and the fault information is sent to the maintenance terminal, which can timely, effectively and accurately troubleshoot the light curtain , so that the elevator can operate normally and ensure the safety of passengers. This ensures that the maintenance personnel can obtain information as soon as a fault occurs.

Description

Fault diagnosis method and system for light curtain protection device

technical field

The invention relates to the field of elevator safety protection, in particular to a fault diagnosis method and system for a light curtain protection device.

Background technique

Elevator safety protection devices include mechanical protection devices and photoelectric protection devices. Mechanical protection devices usually refer to touch panels, and photoelectric protection devices usually refer to light curtains. Among them, the protection principle of the touch panel is: the obstacle triggers the action of the micro switch by hitting the touch panel, and then plays a protective role; the protection principle of the light curtain is: the transmitting end emits infrared light, and the receiving end receives infrared light. If the receiving end cannot receive infrared light, it will send out a blocking signal to protect passengers and objects. Light curtain protection is non-contact protection, which is safer and more reliable for passengers and objects.

At present, newly installed elevators basically use light curtain protection devices to protect the safety of passengers entering and leaving the elevator. However, as an optoelectronic integrated product, the light curtain has a relatively high failure rate due to the influence of environmental factors and its own characteristics. The fault handling method in the traditional technology is: after the elevator fails to close the door or traps people, technicians will handle it on the spot. As for the processing method of the traditional technology, the inventors have found that there are at least the following problems: the fault cannot be passively processed by feedback until the above-mentioned fault occurs in the elevator, and the timeliness and reliability of the traditional processing method are insufficient.

Contents of the invention

Based on this, it is necessary to provide a fault diagnosis method and system for a light curtain protection device for the problem that the fault handling of the elevator safety device is not timely and reliable.

In order to achieve the above object, the embodiment of the technical solution of the present invention is:

In one aspect, a fault diagnosis method for a light curtain protection device is provided, comprising the following steps:

receiving the light curtain signal through the first signal loop;

According to the light curtain signal, obtain the light spot blocking state of the light curtain, and judge whether there is a fault in the light curtain according to the light point blocking state, and obtain the light curtain fault type when the judgment result is yes;

The fault type of the light curtain is sent to the maintenance terminal through the fourth signal circuit.

On the other hand, a fault diagnosis system for a light curtain protection device is provided, including:

The receiving unit is used to receive the light curtain signal through the first signal loop;

The fault judgment unit is used to obtain the light spot blocking state of the light curtain according to the light curtain signal, and judge whether there is a fault in the light curtain according to the light point blocking state, and obtain the light curtain fault type when the judgment result is yes;

The sending unit is used to send the fault type of the light curtain to the maintenance terminal through the fourth signal circuit.

The above technical scheme has the following beneficial effects:

In the fault diagnosis method and system of the light curtain protection device of the present invention, the light curtain signal received by the door control board is used to obtain the blocking state of the light spot, and the fault type of the light curtain is detected according to the blocking state of the light point, and the fault information is sent to For the maintenance terminal, it is possible to troubleshoot the light curtain in a timely, effective and accurate manner, so that the elevator can operate normally and ensure the safety of passengers. This ensures that the maintenance personnel can obtain information as soon as a fault occurs. Maintenance personnel can take fast and effective maintenance methods to find and eliminate faults according to the different types of fault information sent by the door control board, so as to ensure the safety and normal use of the elevator.

Description of drawings

The above and other objects, features and advantages of the present invention will become more apparent by a more particular description of preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals designate the same parts throughout the drawings, and the drawings are not intentionally scaled to actual size and the emphasis is on illustrating the gist of the present invention.

Fig. 1 is the schematic flow chart of Embodiment 1 of the fault diagnosis method of the light curtain protection device of the present invention;

Fig. 2 is the schematic diagram of the signal circuit in the embodiment 1 of the fault diagnosis method of the light curtain protection device of the present invention;

Fig. 3 is a schematic flow chart of Embodiment 2 of the fault diagnosis method of the light curtain protection device of the present invention;

4 is a schematic diagram of a signal circuit in Embodiment 2 of the fault diagnosis method of the light curtain protection device of the present invention;

Fig. 5 is a schematic structural diagram of Embodiment 1 of the fault diagnosis system of the light curtain protection device of the present invention.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Embodiment 1 of the fault diagnosis method of the light curtain protection device of the present invention:

In order to solve the problem that the fault handling of the elevator safety device is not timely and reliable enough, the present invention provides an embodiment 1 of a fault diagnosis method for a light curtain protection device, and Fig. 1 is a flow chart of embodiment 1 of the fault diagnosis method for a light curtain protection device Schematic diagram; as shown in Figure 1, may include the following steps:

Step S110: receiving the light curtain signal through the first signal loop;

Step S120: Obtain the light spot blocking state of the light curtain according to the light curtain signal, and judge whether there is a fault in the light curtain according to the light point blocking state, and obtain the light curtain fault type when the judgment result is yes;

Step S130: Send the fault type of the light curtain to the maintenance terminal through the fourth signal circuit.

In a specific embodiment, steps may also be included:

According to the transmission and reception of the light curtain signal and the light curtain fault type, detect whether there is a fault in the signal transmission link including the first signal loop and the fourth signal loop;

According to the detection result, the link fault type is obtained;

Send the link fault type to the maintenance terminal.

Wherein, in a specific embodiment, the fourth signal loop is a bidirectional signal transmission loop.

Specifically, Fig. 2 is a schematic diagram of the signal circuit in Embodiment 1 of the fault diagnosis method of the light curtain protection device of the present invention; as shown in Fig. The board transmits the fault type of the light curtain to the maintenance terminal through "signal loop 4";

The door control board can diagnose the fault state of the light curtain itself and the fault state of "signal circuit 1" through the information transmitted by "signal circuit 1", and then send it to the maintenance terminal through "signal circuit 4"; where "signal circuit 1" , "Signal loop 4" is a bidirectional or unidirectional signal transmission path.

According to the type of light curtain failure status displayed on the maintenance terminal, the maintenance personnel can handle it by themselves or contact the property personnel to check it first, which not only saves labor costs, but also quickly eliminates the fault and restores the normal operation of the elevator.

The specific embodiment of the fault detection method embodiment 1 of the light curtain protection device of the present invention:

In actual operation, a light-emitting diode can be placed at the receiving end of the light curtain next to each infrared receiving tube to indicate or the fault location of the light curtain transmitting tube and receiving tube can be indicated by the height data of the fault point. Whether to increase LED display is determined according to the actual situation.

Among them, the distance between the lowest light point of the light curtain and the physical bottom of the light curtain is determined and known, and the distance between each light point is also determined and known, and all light points are numbered from low to high , the state of each light is known, so the height data of the fault point can be calculated; and the indication form of the fault point height can include the following two ways: 1) the form indicated by the indicator light; 2) indicated by the data distance.

Code the receiving lights of the light curtain from top to bottom or from bottom to top, such as LED1, LED2, ... LEDn for numbering;

Use 0, 1 to indicate the status of each light point being blocked or not blocked, and the light curtain transmits the state of the light curtain light point and configures some headers with a combination of 0 and 1 to the door control board.

1. When the elevator door is in the closed state, the door control panel judges the status of each light point by judging the received light point information. If one or more light points are detected to be continuously blocked for more than a certain period of time, it is considered that the light point is damaged Or the surface of the light curtain needs to be cleaned, etc.; this situation is recorded as "fault type 1";

For fault type 1, the position of the fault light point can be indicated by the LED indicator light on the light curtain or by sending the distance from the bottom of the light curtain to indicate the position of the fault light, which is convenient for locating the fault point and whether the measures taken are effective.

2. If the gate control board cannot receive the changing level signal within a certain period of time, it means that the output is damaged, the "signal circuit 1" is disconnected, the input circuit of the gate control board is damaged, or the light curtain loses power, etc., and it is recorded as "fault". Type 2"; in which, during normal communication, the signal sent by the light curtain to the door control board changes from high to low. It is fixed.

3. If the elevator door is closed and in the standby state, the door control board can notify the light curtain to enter the self-test state; if the transmitting tube does not send infrared light, it will detect the status of the receiving end. On state, that is, the light spot of the light curtain itself is damaged, and it is recorded as "fault type 3";

4. The fault type of the light curtain sent by the door control board, but there is no reply signal from the maintenance terminal, it can be judged that the output of the door control board is faulty or the "signal loop 4" is disconnected, etc., and it is recorded as "fault type 4";

The above-mentioned fault detection method is only an example for illustration, and the type of fault detection is not limited to the above-mentioned examples.

Embodiment 1 of the fault diagnosis method of the light curtain protection device of the present invention, through the light curtain signal received by the door control board, the blocking state of the light spot is obtained, and the fault type of the light curtain is detected according to the blocking state of the light point, and the fault information Sending it to the maintenance terminal can eliminate the faults of the light curtain in a timely, effective and accurate manner, so that the elevator can operate normally and the safety of passengers can be guaranteed. This ensures that the maintenance personnel can obtain information as soon as a fault occurs. Maintenance personnel can take fast and effective maintenance methods to find and eliminate faults according to the different types of fault information sent by the door control board, so as to ensure the safety and normal use of the elevator.

Embodiment 2 of the fault diagnosis method of the light curtain protection device of the present invention:

In order to solve the problem that the fault handling of the elevator safety device is not timely and reliable enough, the present invention also provides the second embodiment of the fault diagnosis method of the light curtain protection device. The difference between this embodiment 2 and the above-mentioned embodiment 1 is that another A signal transmission mode to improve the accuracy and timeliness of the fault detection method of the present invention; Fig. 3 is a schematic flow chart of the fault diagnosis method embodiment 2 of the light curtain protection device of the present invention; as shown in Fig. 3 , it may include steps:

Step S310: receiving the light curtain signal through the first signal loop;

Step S320: According to the light curtain signal, obtain the light spot blocking state of the light curtain, and judge whether there is a fault in the light curtain according to the light point blocking state, and obtain the light curtain fault type when the judgment result is yes;

Step S330: Send the fault type of the light curtain to the main control board through the second signal loop, and the main control board sends the fault type of the light curtain to the maintenance terminal through the third signal loop.

In a specific embodiment, steps may also be included:

According to the light curtain signal and the transmission and reception of the light curtain fault type, detect whether the signal transmission link including the first signal loop and the second signal loop is faulty;

According to the detection result, the link fault type is obtained;

Send the link fault type to the maintenance terminal.

Wherein, in a specific embodiment, the second signal loop is a bidirectional signal transmission loop; the third signal loop is a bidirectional or unidirectional signal transmission loop.

Specifically, Fig. 4 is a schematic diagram of the signal circuit in Embodiment 2 of the fault diagnosis method of the light curtain protection device of the present invention; as shown in Fig. "Signal loop 2" transmits the fault type of the light curtain to the main control board, and the main control board transmits the fault type of the light curtain to the maintenance terminal through "signal loop 3";

The door control board can diagnose the fault state of the light curtain itself and the fault state of the "signal circuit 1" through the information transmitted by "signal circuit 1", and then transmit the fault state to the main control board through "signal circuit 2". , can diagnose the fault state of "signal loop 2", and then send the relevant fault information to the maintenance terminal through "signal loop 3". Among them, "signal loop 1", "signal loop 2", and "signal loop 3" are two-way or one-way signal transmission paths.

According to the type of light curtain failure status displayed on the maintenance terminal, the maintenance personnel can handle it by themselves or contact the property personnel to check it first, which not only saves labor costs, but also quickly eliminates the fault and restores the normal operation of the elevator.

In the specific embodiment of Embodiment 2 of the fault detection method of the light curtain protection device of the present invention, in addition to some fault types described in the above-mentioned Embodiment 1, it may also include:

If the door control board sends the fault type of the light curtain, but the main control board does not reply, it can be judged as the door control board output fault, "signal loop 2" or the main control input fault, etc., and recorded as "fault type 4".

Embodiment 2 of the fault diagnosis method of the light curtain protection device of the present invention, through the light curtain signal received by the door control board, the occlusion state of the light point is obtained, and the fault type of the light curtain is detected according to the occlusion state of the light point, and the main control panel The board sends the fault information to the maintenance terminal, which can eliminate the faults of the light curtain in a timely, effective and accurate manner, so that the elevator can run normally and the safety of passengers is guaranteed. This ensures that the maintenance personnel can obtain information as soon as a fault occurs. Maintenance personnel can take fast and effective maintenance methods to find and eliminate faults according to the different types of fault information sent by the door control board, so as to ensure the safety and normal use of the elevator.

Embodiment 1 of the fault diagnosis system of the light curtain protection device of the present invention:

In order to solve the problem that the fault handling of the elevator safety device is not timely and reliable enough, the present invention also provides Embodiment 1 of the fault diagnosis system of the light curtain protection device; Fig. 5 is a structural schematic diagram of Embodiment 1 of the fault diagnosis system of the light curtain protection device of the present invention ; As shown in Figure 5, may include:

a receiving unit 510, configured to receive the light curtain signal through the first signal loop;

Judgment failure unit 520 is used to obtain the light spot blocking state of the light curtain according to the light curtain signal, and judge whether there is a fault in the light curtain according to the light point blocking state, and when the judgment result is yes, obtain the light curtain fault type;

The sending unit 530 is configured to send the fault type of the light curtain to the maintenance terminal through the fourth signal loop.

In a specific embodiment, it may also include:

The first detection unit 540 is used to detect whether the signal transmission link including the first signal loop and the fourth signal loop is faulty according to the transmission and reception of the light curtain signal and the fault type of the light curtain;

The fault judging unit 520 is further configured to obtain the link fault type according to the detection result of the first detection unit 540; the sending unit 530 is also configured to send the link fault type to the maintenance terminal.

In a specific embodiment, it may also include:

The sending unit 530 is used to send the fault type of the light curtain to the main control board through the second signal circuit, and the main control board sends the fault type of the light curtain to the maintenance terminal through the third signal circuit;

The second detection unit 550 is used to detect whether the signal transmission link including the first signal loop and the second signal loop is faulty according to the transmission and reception of the light curtain signal and the fault type of the light curtain; by judging the fault unit 520 according to the first Second, the detection result of the detection unit 550 determines the fault of the signal transmission link, and obtains the type of the link fault; and the sending unit 530 sends the type of the link fault to the maintenance terminal.

Specifically, the receiving unit 510 can receive the information transmitted by the "signal loop 1", and the fault judgment unit 520 can diagnose the fault state of the light curtain itself and the fault state of the "signal loop 1", and then the sending unit 530 can pass the "signal loop 4" to the maintenance terminal; where "signal loop 1" and "signal loop 4" are two-way or one-way signal transmission paths.

In a specific embodiment, the light curtain signal transmitted through "signal loop 1" can also be received by the receiving unit 510, and the sending unit 530 can transmit the fault type of the light curtain to the main control board through the "signal loop 2", and the main control board The board transmits the fault type of the light curtain to the maintenance terminal through "signal loop 3";

Judging the information transmitted by the fault unit 520 through "signal loop 1", diagnosing the fault status of the light curtain itself and the fault status of "signal loop 1", and then transmitting the fault status to the main control board through "signal loop 2", this process Among them, the fault judgment unit 520 can diagnose the fault state of the "signal loop 2", and then the sending unit 530 sends the relevant fault information to the maintenance terminal through the "signal loop 3". Among them, "signal loop 1", "signal loop 2", and "signal loop 3" are two-way or one-way signal transmission paths.

According to the type of light curtain failure status displayed on the maintenance terminal, the maintenance personnel can handle it by themselves or contact the property personnel to check it first, which not only saves labor costs, but also quickly eliminates the fault and restores the normal operation of the elevator.

In actual operation, common fault types and specific operations are described in Embodiment 1 and Embodiment 2 of the method of the present invention.

Embodiment 1 of the fault diagnosis system of the light curtain protection device of the present invention, through the light curtain signal received by the door control board, the blocking state of the light spot is obtained, and the fault type of the light curtain is detected according to the blocking state of the light point, and the fault information Sending it to the maintenance terminal can eliminate the faults of the light curtain in a timely, effective and accurate manner, so that the elevator can operate normally and the safety of passengers can be guaranteed. This ensures that the maintenance personnel can obtain information as soon as a fault occurs. Maintenance personnel can take fast and effective maintenance methods to find and eliminate faults according to the different types of fault information sent by the door control board, so as to ensure the safety and normal use of the elevator.

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

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

Claims (7)

1. A method for fault diagnosis of light curtain protective device, is characterized in that, comprises the following steps: The door control board receives the light curtain signal through the first signal loop; According to the light curtain signal, the gate control board obtains the light spot shielding state of the light curtain, and judges whether there is a fault in the light curtain according to the light spot shielding state, and when the judgment result is yes, obtains light curtain fault type; The gate control board sends the fault type of the light curtain to the maintenance terminal through the fourth signal loop; the fourth signal loop is a bidirectional signal transmission loop; The gate control board sends the light curtain fault type to the main control board through the second signal loop, and the main control board sends the light curtain fault type to the maintenance terminal through the third signal loop. 2. the fault diagnosis method of light curtain protective device according to claim 1, is characterized in that, also comprises the step: The gate control board detects whether the signal transmission link including the first signal loop and the fourth signal loop is faulty according to the transmission and reception of the light curtain signal and the fault type of the light curtain; The gate control board obtains the link fault type according to the detection result; The gate control board sends the link failure type to the maintenance terminal. 3. the fault diagnosis method of light curtain protective device according to claim 1, is characterized in that, also comprises the step: The gate control board detects whether the signal transmission link including the first signal loop and the second signal loop is faulty according to the transmission and reception of the light curtain signal and the fault type of the light curtain; The gate control board obtains the link fault type according to the detection result; The gate control board sends the link failure type to the maintenance terminal. 4. The fault diagnosis method of the light curtain protection device according to claim 1 or 3, characterized in that, the second signal loop is a bidirectional signal transmission loop; the third signal loop is a bidirectional or unidirectional signal Pass the loop. 5. A fault diagnosis system for a light curtain protection device, characterized in that it comprises: The door control board receiving unit is used to receive the light curtain signal through the first signal loop; The door control panel judges the fault unit, which is used to obtain the light spot blocking state of the light curtain according to the light curtain signal, and judge whether there is a fault in the light curtain according to the light point blocking state, and when the judgment result is If yes, get the light curtain fault type; The door control panel sending unit is used to send the light curtain fault type to the maintenance terminal through the fourth signal loop; the fourth signal loop is a two-way signal transmission loop; Also includes: The door control board sending unit is also used to send the light curtain fault type to the main control board through the second signal loop, and the main control board sends the light curtain fault type to the maintenance through the third signal loop Secure the terminal. 6. The fault diagnosis system of light curtain protection device according to claim 5, is characterized in that, also comprises: The first detection unit of the door control board is used to detect whether the signal transmission link including the first signal loop and the fourth signal loop is failure; The fault judgment unit of the gate control board is also used to obtain the link fault type according to the detection result of the first detection unit of the gate control board; The door control board sending unit is further configured to send the link failure type to the maintenance terminal. 7. The fault diagnosis system of the light curtain protection device according to claim 5, characterized in that, The second detection unit of the door control board is used to detect whether the signal transmission link including the first signal loop and the second signal loop is There is a fault; the fault judgment unit of the gate control board judges the fault of the signal transmission link according to the detection result of the second detection unit of the gate control board, and obtains the link fault type; and is sent by the gate control board The unit sends the link failure type to the maintenance terminal.