CN103010879B - Contactless power supply system for elevator - Google Patents

Abstract

The invention relates to a contactless power supply system for an elevator. A hall destination floor registration device (13) is respectively arranged on a hall of each floor. A group management control device 20 respectively distributes the hall calling of the user's destination floor registered by the hall destination floor registration device (13) to all the number machines. Number machine control devices (11a, 11b, 11c) of the number machines have the functions of predicting the electric power necessary for the response to the hall calling, detecting the electric power of batteries (33a, 33b, 33c) of elevator cars (12a, 12b, 12c), comparing the sum of the predicted necessary electric power and the preparatory electric power with the electric power of the battery, and controlling the distribution of the additional calling of each number machine based on the comparing result.

Description

Non-contact power supply system for elevators

This application is based on Japanese Patent Application No. 2011-211413 (filing date: 9/27/2011), and enjoys the priority of this application. This application, including all contents thereof, is referred to by reference to that priority.

technical field

Embodiments of the present invention relate to a non-contact power supply system for an elevator that supplies electric power necessary for the operation of an elevator in a non-contact manner.

Background technique

In recent years, interest in research on non-contact power supply technology is increasing, and it is being used in various fields. The non-contact power supply technology mainly utilizes the principle of electromagnetic induction, and applies the AC magnetic flux generated at the primary coil to the secondary coil to generate an electromotive force to transmit power in a non-contact manner.

Currently, the introduction of contactless power supply technology especially for electric vehicles is very popular. Also, with regard to elevators, studies have been conducted to introduce this technology for the purpose of realizing cable-free in the elevator passage. As a system using non-contact power supply technology, there are guide rail type (mobile type) system in which the power receiving part moves along the power supply line, and charging type (fixed type) in which the primary side and secondary side of the transformer are arranged at fixed positions with gaps. )system.

In the elevator, any of the above methods can be used. However, the guide rail type system has a disadvantage that the power supply system becomes larger in proportion to the length of the guide rail when the elevating process becomes longer. Therefore, consider charging type system. At this time, in the configuration in which the car is the power supply target, the car has a battery, and the car is moved to the power supply device to supply power.

Contents of the invention

In the charging system described above, when the remaining battery capacity falls below a certain value, it is necessary to move the car to the installation position of the power supply device to supply power. Therefore, if the power consumption of the battery is excessive due to, for example, continuous operation, etc., the operation must be interrupted for power supply, which deteriorates the operating efficiency of the elevator.

The problem to be solved by the present invention is to provide a non-contact power supply system of an elevator that can prevent interruption of operation caused by power supply and maintain safe operation service.

This embodiment relates to a non-contact power supply system for an elevator. In the non-contact power supply system for an elevator that has the plurality of cars and performs non-contact power supply to the batteries installed in the cars of these cars, it includes: The elevator hall destination floor registration device of the elevator hall of the elevator hall, distributes the elevator hall call including the destination floor of the user registered by the elevator hall destination floor registration device to the group management control device of any one of the above-mentioned machines A plurality of car control devices that individually control the operation of the cars of the above-mentioned cars are called to correspond to the elevator halls assigned by the group supervisory control device installed corresponding to the cars.

The control devices for each of the number cars include: an electric power predicting unit that predicts electric power necessary to respond to the elevator hall call; a battery electric power detecting unit that detects electric power of the battery; An additional call control unit that compares the value of the reserve power set in advance with the electric power of the battery detected by the battery residual power detection unit, and controls allocation of additional calls to each of the numbers of machines based on the comparison result.

According to the non-contact power supply system for an elevator configured as described above, interruption of operation due to power supply can be prevented, and safe operation services can be maintained.

Description of drawings

Fig. 1 is a diagram showing the configuration of a contactless power supply system for an elevator according to an embodiment.

FIG. 2 is a diagram showing an example of a table provided in a registration control unit of the group supervisory control device in the embodiment.

Fig. 3 is a block diagram showing the functional configuration of the car control device in the embodiment.

Fig. 4 is a flowchart showing the processing operation of the machine control device in the embodiment.

Detailed ways

Embodiments will be described below with reference to the drawings.

Fig. 1 is a diagram showing the configuration of a contactless power supply system for an elevator according to an embodiment. Moreover, in the example of FIG. 1, although the structure which group-managed three elevators was shown, it is not limited to this structure. In addition, the elevator mentioned here mainly refers to a car, and when there are a plurality of elevators, it is also called a "number car".

The number car control devices 11a, 11b, and 11c are provided corresponding to the cars 12a, 12b, and 12c of the respective number cars (A, B, and C cars). The car control devices 11 a , 11 b , and 11 c execute control of the car itself, including driving control of hoisting machines not shown in the figure, opening and closing control of doors, and the like. The cars 12a, 12b, and 12c are driven by a hoist (not shown) to move up and down in the lift passage.

On the one hand, the elevator halls of each floor are provided with an elevator hall destination floor registration device 13 . The hall destination floor registration device 13 is a device for registering a destination floor for hall users on each floor. The hall destination floor registration device 13 has an operation unit 14 for registering a destination floor and a display unit 15 for displaying an assigned car. As a method of registering the destination floor, the operation of the numeric keypad is generally used, but if it is possible to register in the elevator hall, for example, a method using a card reader or a wireless IC may be used.

Once the destination floor is registered by the destination floor registration device 13 in the elevator hall, the two information of the destination floor and the registration floor (the floor where the user performs the registration operation) are output to the group management control device as a group of elevator hall calls 20.

The group supervisory control device 20 is a device that performs group supervisory control on the operation of each number car (cars 12a, 12b, 12c). This group management control device 20 has a registration control unit 21 and an allocation control unit 22 . These are processing units executed by software on a microprocessor, and information can be transmitted and received between each unit as shown in FIG. 1 .

The registration control unit 21 has a table 21 a shown in FIG. 2 , and stores hall call information and an assigned number machine for registration of each destination floor in the table 21 a. As mentioned above, the hall call contains both information of the destination floor and the check-in floor. In addition, the assigned car indicates a car assigned to a hall call by the assignment control unit 22 .

In the example of FIG. 2 , registered floor: 10F, destination floor: 1F, and allocated machine: A machine are registered at the top of the table 21a. It means that the user operates the destination floor registration device 13 of the elevator hall on 10F to register 1F as the destination floor, and at this time, machine A is assigned to it.

Based on the operating information of each car (car position, running direction, door opening and closing status, etc.), the allocation control unit 22 selects the most suitable car to allocate the call of the elevator hall, and responds to this car as the allocated car Go to the check-in floor.

Also, a generally known method is employed for the method of allocating elevators to hall calls. Generally, there is a method of obtaining an evaluation value based on information such as the position and direction of a car of each car, and assigning the car with the highest evaluation value as the most suitable car.

The above is the configuration of a general elevator group management system provided with a hall destination floor registration device. In this embodiment, the group management system of the elevator adopts a non-contact power supply system.

That is, power supply devices 31a, 31b, and 31c corresponding to the respective number cars are installed in the elevator passage. These power supply devices 31a, 31b, and 31c use the cars 12a, 12b, and 12c of the respective numbers of cars as power supply objects, and the cars 12a, 12b, and 12c supply necessary electric power through contact. In addition, the installation positions of the power supply devices 31a, 31b, and 31c are not in phase with each other, and correspond to the predetermined scattered waiting floors. For example, the power supply device 31a for machine A is installed on the uppermost floor, the power supply device 31b for machine B is installed on the middle floor, and the power supply device 31c for machine C is installed on the lowest floor.

On the one hand, the cars 12a, 12b, and 12c of each number car are provided with power receiving devices 32a, 32b, and 32c and batteries 33a, 33b, and 33c, respectively.

The power receiving device 32a receives the electric power supplied in a non-contact manner from the power feeding device 31a in a state facing the power feeding device 31a on the side of the elevator passage, and stores it in the battery 33a. The electric power stored in the battery 33a is used for various devices in the car (for example, lighting devices, door motors, etc.).

The same applies to the power receiving devices 32b and 32c. The power receiving device 32b receives the electric power supplied in a non-contact manner from the power feeding device 31b while facing the power feeding device 31b on the elevator passage side, and stores it in the battery 33b. The power receiving device 32c receives the electric power supplied in a contactless manner from the power feeding device 31c in a state facing the power feeding device 31c on the side of the elevator passage, and stores it in the battery 33c.

Moreover, the electric power of the battery 33a, 33b, 33c can be used as the driving electric power of the motor of the hoisting machine not shown in figure provided in each machine. In this case, the batteries 33a, 33b, and 33c need to use batteries with relatively large capacities.

Also, as a method of contactless power feeding, for example, an electromagnetic induction method is employed. The "electromagnetic induction method" uses the magnetic flux generated when current flows through one of the two adjacent coils (the coil on the power supply side) as a medium to supply power to the other coil (coil on the power receiving side). There is also a "radio wave method" that converts electric current into electromagnetic waves and transmits power through an antenna. In addition, although there is an "electromagnetic field magnetic resonance method" that utilizes a magnetic resonance phenomenon of an electromagnetic field, the present invention is not limited to these methods.

Here, in this embodiment, the car control devices 11a, 11b, and 11c corresponding to each car have a function for realizing a non-contact power supply system. Now, representing the car control devices 11a, 11b, and 11c of the respective cars, the configuration of the car control device 11a of the A car is shown in FIG. 3 .

Fig. 3 is a block diagram showing the functional configuration of the number car control device 11a of the A car. Also, the car control device 11b of the car B and the car control device 11c of the car C have the same configuration.

The car control device 11a is provided with a call response control unit 41, a power prediction unit 42, a battery power detection unit 43, an additional call control unit 44, and a power supply control unit 45 to realize the function of a contactless power supply system.

The call response control unit 41 performs response control to the hall call assigned by the group supervisory control device 20 , and has a call storage unit 41 a for storing information (registered floor and destination floor) of the hall call.

When machine A does not respond to the hall call, the call response control unit 41 issues a standby instruction to the power supply control unit 45, and moves machine A to a predetermined scattered waiting floor, where it receives power from the power supply device 31a. The status is standby. On the other hand, when the No. A car responds to the hall call, the call response control unit 41 gives the information on the hall call stored in the call storage unit 41 a to the power prediction unit 42 to perform power prediction.

The electric power prediction unit 42 predicts the electric power Pn required for the No. A machine to answer the hall call. At this time, since the elevators of this system have the hall destination floor registering device 13, the operation schedule of the machine A can be grasped in advance, and the electric power Pn necessary for answering calls can be predicted based on the operation schedule. The necessary electric power Pn is obtained by adding the electric power Pa necessary for moving from the current position to the registered floor of the hall call, and the electric power Pb necessary for moving from the registered floor to the destination floor.

The battery power detection unit 43 detects the power Pk of the battery 33a provided in the car 12a of the A car. Specifically, the voltage value of the battery 33a is acquired from the car 12a, and the electric power Pk currently remaining in the battery 33a is detected from the voltage value.

The additional call control unit 44 compares the value of the necessary power Pn (Pa+Pb) plus the reserve power Pc predicted by the power prediction unit 42 with the power Pk of the battery 33 a detected by the battery power detection unit 43 . Based on the comparison result, the additional call control unit 44 controls allocation of the additional call to the cell phone A. FIG.

The aforementioned reserve power Pc is a fixed value, and is set in consideration of, for example, when the user opens the door for a long time. If Pn+Pc>Pk, an allocation prohibition command for prohibiting the allocation of additional calls to the number A cell is output to the group supervisory control device 20 .

The power supply control unit 45 controls the driving of the hoist of the machine A (not shown) to move the car 12a to a predetermined power supply floor to supply power in accordance with the output of the above-mentioned distribution prohibition command. As described above, the power supply positions of each number car are different, and the power supply devices 31a, 31b, and 31c are installed in conjunction with the scattered waiting floors.

In such a configuration, once the user registers the destination floor through the operation of the hall destination registration device 13 provided in the elevator hall of each floor, a hall call including the destination floor and the registered floor is issued. The information is sent to the group management control device 20. In the group supervisory control device 20 , the hall call information (destination floor and registered floor) transmitted from the hall destination floor registration device 13 is stored in the table 21 a of the registration control unit 21 . Then, the group supervisory control device 20 allocates the hall call to any one of the elevator cars through the allocation control unit 22 .

Once the assigned car is determined, the information of the assigned car is stored in the table 21a in association with the hall call. Moreover, the allocation command of a hall call is output to the car control apparatus corresponding to the assigned car among the car control apparatuses 11a, 11b, 11c of each car. The car control device that has received the assignment command monitors the battery power of its own car, and supplies power as necessary while responding to the hall call.

Next, with regard to machine A, the operation related to the battery power will be described in detail.

Fig. 4 is a flowchart showing the processing operation of the car control device 11a of the car A. Also, the same process is performed on the car control device 11b of the car B and the car control device 11c of the car C.

First, the car control device 11a judges whether or not the car A is answering the hall call (step S11). This is performed with reference to the call storage unit 41 a provided in the call response control unit 41 . When car A is not responding to the hall call, that is, in the state where the information of the hall call is not stored in the call storage unit 41a (No in step S11), the car control device 11a sends The car 12a of the No. A car moves to the power supply floor, and waits in a dispersed manner while receiving power supply from the power supply device 31a (step S12). The electric power supplied by the power supply device 31a is stored in the battery 33a via the power receiving device 32a of the car 12a.

When car A is in the process of answering the hall call (Yes in step S11), the car control device 11a responds while predicting the power Pn necessary for answering the hall call through the power prediction unit 42 (step S13 ). Specifically, the power Pa necessary to move from the current position to the registered floor called by the elevator hall, and the power Pb necessary to move from the registered floor to the destination floor are obtained, and the added power is obtained as the power necessary for answering the call Power Pn.

Moreover, the car control device 11a detects the electric power Pk of the battery 33a provided in the car 12a of the car A by the battery electric power detection part 43 (step S14). Here, the value of the electric power Pn necessary for answering a call plus the preset reserve power Pc is compared with the electric power Pk of the battery 33a. If the result is Pn+Pc≦Pk (No in step S15), the car control device 11a continues to operate in response to the hall call.

On the other hand, when Pn+Pc>Pk, that is, when the value of the electric power Pn necessary for answering the call plus the reserve power Pc is larger than the electric power Pk of the battery 33a (Yes in step S15), the number machine control device 11a prohibits the operation of the A number machine. For allocation of additional calls, the additional call control unit 44 outputs an allocation prohibition command to the group supervisory control device 20 (step S16 ). The group management control device 20, upon receiving the allocation prohibition command, excludes the machine number A from the group management target. In this way, even if a new hall call occurs, it will not be reassigned to machine A, so the consumption of battery power can be suppressed.

Also, the car control device 11a refers to the call storage unit 41a, and after answering all remaining hall calls, the power supply control unit 45 performs power supply to move the car 12a of the car A to the power supply floor (step S17). During this period, unit A left the group management.

After the battery 33a of the car 12a stores electric power of a certain value or more on the power supply floor, the car control device 11a judges that charging is completed (Yes in step S18), and outputs a command to cancel the prohibition of additional call distribution to the group supervisory control device 20 (step S18). S19). In this way, machine A returns to the group management, and waits for a new allocation instruction of the elevator hall call on the power supply floor.

In this way, when each car answers the hall call, when the current battery power is low, the distribution of additional calls is prohibited, and the power is supplied by moving to the power supply floor to prevent the battery from running out during operation. In addition, during the power supply, although the group management is separated, other numbers can answer hall calls, so the service can be continued.

In addition, when each car does not answer the hall call, it is possible to answer a new hall call in a state where the battery power is sufficient by dispersing and waiting on predetermined power supply floors.

According to at least one embodiment described above, it is possible to provide a non-contact power supply system for an elevator that prevents interruption of operation due to power supply and maintains safe operation services.

While several embodiments of the present invention have been described, these embodiments are presented as examples only, and are not intended to limit the scope of the invention. These embodiments can be implemented in other various forms, and various omissions, substitutions, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the scope and gist of the invention, and are also included in the invention described in the patent claims and the equivalent scope thereof.

Claims (5)

1. A non-contact power supply system for an elevator, characterized in that, In the non-contact power supply system of an elevator that has multiple number cars and supplies power to the batteries installed in these number cars in a non-contact manner, it includes: The destination floor registration device of the waiting hall installed in the waiting hall of each floor; distributing the elevator hall call containing the destination floor of the user registered by the elevator hall destination floor registration device to the group management control device of any one of the number machines; a plurality of car control devices installed corresponding to the respective cars to individually control the operation of the cars of the respective cars based on the hall calls assigned by the group supervisory control device, The control devices of each number machine include respectively: Adding the electric power necessary to move from the current position to the registered floor of the hall call and the electric power necessary to move from the registered floor to the destination floor, and predicting the electric power necessary for answering the hall call Electric Power Forecasting Department; a battery power detection section that detects power of the battery; Comparing a value obtained by adding a preset reserve power to the required power predicted by the electric power predicting unit and the electric power of the battery detected by the battery power detecting unit, and controlling the operation of the battery based on the comparison result. An additional call control unit that assigns additional calls to each number machine. 2. The non-contact power supply system of an elevator as claimed in claim 1, characterized in that, The additional call control unit, when there is a car whose value obtained by adding the reserve power to the required power is greater than the electric power of the battery, assigns an allocation for prohibiting the allocation of the additional call to the corresponding car. A prohibition command is output to the group management control device. 3. The non-contact power supply system of an elevator as claimed in claim 2, characterized in that, The control devices of each number machine respectively further include: A power supply control unit that, when the allocation prohibition command is output by the additional call control unit, moves the car of the car to a predetermined power supply after responding to a hall call assigned to the car. The floor is powered. 4. The non-contact power supply system of an elevator as claimed in claim 2, characterized in that, The group management control device excludes the numbered machine from being subject to group management during a period from the receipt of the allocation prohibition command to the completion of power supply of the corresponding numbered machine. 5. The non-contact power supply system of an elevator as claimed in claim 1, characterized in that, The control devices for the respective number machines cause the respective number machines to stand by in a distributed manner on predetermined power supply floors when the respective number machines do not respond to the elevator hall call.