JP5540724B2 - Elevator control device - Google Patents

Description

  The present invention relates to an elevator control device, and more particularly to an elevator control device that reduces power consumption in an elevator standby mode and can return to a normal mode when a passenger approaches a landing.

  In a conventional elevator control device, a hall device having a microcomputer is installed for each floor, and a hall button on each floor is connected to a microcomputer in each hall device. Then, serial transmission is performed between the hall device and the elevator control panel that controls the entire elevator, the hall button signal for each floor is transmitted to the elevator control board, and information such as button response lights and indicators are transmitted to each floor. It is displayed on the installed hall device.

  At this time, the hall device on each floor requires not only a microcomputer but also a communication IC and the like, so a DC power source for operating these electronic circuits is required. This DC power supply is obtained by supplying AC power to each floor with wiring cables and converting it to DC power with a landing power supply installed on each floor or every several floors, and the DC power supply is installed on each floor Supplying to the device.

  In addition, since the landing device takes signals such as landing buttons and switches into the microcomputer and serially transmits the signals to the elevator control panel, various signals are transmitted to the elevator control panel when the power supply to the landing power supply is stopped. The power supply to the hall power supply could not be stopped. Accordingly, power is always supplied to the landing power supply even when there are no passengers on the landing, and wasteful power is consumed in the standby mode in which the elevator does not operate for a long time.

  To solve this problem, the hall power is shut off by a signal from the elevator control panel in the elevator standby mode, and as a recovery method, a backup power source consisting of a capacitor and a battery provided in the hall device is used to power the hall device. Even in a state where no is supplied, an elevator control device has been proposed in which a contact signal of a landing button is transmitted to the elevator control panel via a transmission path to restore the landing power supply (see, for example, Patent Document 1).

JP 2003-54846 A (summary column, FIG. 1)

  According to the elevator control device disclosed in Patent Document 1, it is not necessary to supply power to the landing device in the standby mode in which the elevator does not operate for a long time, and there is an advantage that power consumption can be reduced. However, a backup power source for transmitting the contact signal of the landing button is required, and it is necessary to provide a capacitor, a battery, etc. in the landing device.

  In addition, since the high level signal is sent to the transmission path in the low state by the landing button backup circuit of the landing device, the conventional receiving circuit cannot be used on the elevator control panel side, and the landing button backup on the elevator control panel side. An input circuit is also required.

  Furthermore, since the power supply to the landing device is completely cut off until the landing button is pressed, there is a problem that it is impossible for the passenger to determine whether the elevator is in operation or not.

  The present invention has been made to solve the above-described problems, and shuts off the power to the landing device in the elevator standby mode, and when a passenger approaches the landing in a state where the power is not supplied to the landing power supply. An elevator control device capable of transmitting a return signal to an elevator control panel is provided.

An elevator control device according to the present invention is provided via a transmission line between a landing button installed at a landing on each floor, a landing device installed on each floor to which a contact signal of the landing button is input, and the landing device. The elevator control panel including a CPU for performing various types of information communication and controlling the supply of landing power to the landing device, and the control of the CPU when a contact signal of the landing button is not input within a set time A circuit breaker that shuts off the landing power source, a passenger sensing device that outputs a signal when a passenger approaches the landing when enabled , and a transmission device that keeps the transmission path of the transmission path ON when the landing power source is shut off power by connecting the power supply of the passenger sensing device and a switching means to enable the passenger sensing system, the transmission path, turned OFF by a signal output from the passenger sensing device The CPU, when the transmission path is in an OFF state during interruption of the landing power, is intended to restore the landing power by operating the breaker.

  According to the present invention, the power to the landing device in the standby mode of the elevator is cut off, and when the passenger approaches the landing when the power to the landing device is cut off, a return signal can be transmitted to the elevator control panel. There is no backup power source and no elevator button backup input circuit on the elevator control panel side, the power to the landing device can be cut off, waste of power consumption can be eliminated, and passengers can judge whether the elevator is operating or not operating There is an effect that can be done.

It is a block diagram which shows the whole structure of the elevator control apparatus by Embodiment 1 of this invention. It is a timing chart explaining operation | movement of the elevator control apparatus by Embodiment 1 of this invention.

  Preferred embodiments of an elevator control device according to the present invention will be described below with reference to the accompanying drawings. It should be noted that the present invention is not limited to this embodiment, and includes various design changes.

Embodiment 1 FIG.
1 is a block diagram showing the overall configuration of an elevator control apparatus according to Embodiment 1 of the present invention. In FIG. 1, a landing device 1 is installed for each floor. The landing device 1 is a passenger sensing device that outputs a signal when an elevator passenger approaches the landing, for example, a motion sensor 1a, and a motion in the standby mode of the elevator. A switching unit 1b constituted by a relay or a transistor for connecting the power source of the sensor 1a to a transmission power source, a microcomputer 1c for controlling the switching unit 1b, and a voltage of a transmission path described later by a signal from the motion sensor 1a or the microcomputer 1c. It is composed of a transistor 1d that is turned on and off, and a DC / DC converter 1e that variably sets the supply voltage of the hall power supply 2. The hall power supply 2 is configured to convert AC power into DC and supply it to the hall device 1.

  The elevator control panel 3 performs various types of information communication with the landing device 1, and controls the CPU 3 a that restricts the supply of the landing power source 2 to the landing device 1, and turns on / off the landing power sources 2 other than the top floor by the control of the CPU 3 a. The circuit breaker 3b to be turned off is provided.

  The power supply line 4 for supplying power to the landing power supply 2 includes a power supply line 4a that is connected to the circuit breaker 3b and can be turned on / off by turning on / off the circuit breaker 3b. It is comprised from the power wire 4b which always supplies a power supply to the hall device 1 of a floor. The transmission path 5 for performing various types of information communication between the hall device 1 and the elevator control panel 3 includes a transmission path 5a for sending a signal from the hall device 1 to the elevator control board 3, and a transmission path 5 including the transmission path 5a. Is composed of a transmission power supply line 5b for keeping the power ON state.

The elevator control device according to the first embodiment is configured as described above. Next, the operation from the stop of the landing power supply to the restart of supply of the elevator control device will be described with reference to the timing chart of FIG.
First, the case where power is supplied to the hall power supply 2 on each floor, that is, the normal mode will be described. In the normal mode, the circuit breaker 3b is in an ON state, and power is supplied to the landing power supply 2 on each floor. Further, when the passenger presses the landing button or when there is a switch input, the contact signal is taken into the microcomputer 1c and transmitted to the elevator control panel 3 by serial communication via the transmission path 5a. For this reason, in a state where the power is not supplied to the landing power supply 2 on each floor, normally, information such as a landing button contact signal cannot be sent to the control panel 3, so that the power supply to the landing power supply 2 cannot be stopped.

Next, since there is no passenger at the elevator hall, when there is no contact input of the hall button within the set time, power is not supplied to the hall power supply 2 other than the top floor, that is, in the standby mode. To do.
When the hall button is not pressed within the set time, the CPU 3a of the elevator control panel 3 transmits a signal for entering the standby mode to the hall device 1 through a receiving path (not shown) of the transmission path 5. The hall device 1 that has received the signal outputs a signal to the switching unit 1b so that the power source of the motion sensor 1a and the power source for transmission are connected. As a result, the switching unit 1b is switched to supply power to the motion sensor 1a, and a signal from the motion sensor 1a is transmitted to the transmission path 5a.

  Thereafter, the CPU 3a of the elevator control panel 3 transmits a signal to the circuit breaker 3b to turn off the circuit breaker 3b, thereby stopping the supply of power to the landing power sources 2 other than the top floor. At this time, power is supplied to the hall power supply 2 on the top floor, and transmission power is supplied to each floor. Therefore, the motion sensor 1a is effective, and the transmission path 5 is in an ON state. However, since the direct current power supplied from the landing power supply 2 to the landing device 1 is stopped and the microcomputer power generated by the DC / DC converter 1e in the landing device 1 is not generated except for the top floor, the microcomputer 1c Is in a state that does not consume.

Next, the case of returning from the standby mode state to the normal mode state will be described.
In the standby mode state, the motion sensor 1a is in an effective state as described above, and since the power is supplied to the landing device 1 on the top floor, the transmission path 5a is in the ON state. Here, when a passenger approaches the hall device 1, a signal is sent from the motion sensor 1a to the transistor 1d, the transistor 1d is turned on, and the transmission path 5a is turned off. After the CPU 3a of the elevator control panel 3 receives this signal by a receiving circuit (not shown), it transmits a signal to the circuit breaker 3b, and the circuit breaker 3b is turned on.

  By carrying out as described above, when there are no passengers at the elevator hall, the power supply to the hall power sources 2 other than the top floor can be stopped, and wasteful power consumption can be reduced.

  Further, even when no power is supplied to the landing power supply 2 on each floor, the return signal can be transmitted only by the passenger approaching the landing by the motion sensor 1a installed in the landing device 1. Therefore, wasteful power consumption can be reduced with the minimum necessary change from the conventional elevator control device, and the return to the normal mode is automatic.

  In addition, since the power supply is always supplied to the hall power supply on the top floor and the power supply is always supplied to the transmission power supply line 5b, the return signal can use the conventional transmission line and is always in the High state. The transmission path 5a can be transmitted by the same active-low method as a conventional low signal by the conduction of the transistor 1d of the hall device 1. Therefore, the control board of the elevator control panel 3 can use the conventional elevator signal receiving circuit as it is. Therefore, wasteful power consumption can be reduced without significant changes from the conventional elevator control device.

1 landing device 1a motion sensor 1b switching unit 1c microcomputer 1d transistor 1e DC / DC converter 2 landing power source 3 elevator control panel 3a CPU
3b Circuit breaker 4, 4a, 4b Power line 5 Transmission path 5a Transmission path 5b Transmission power line

Claims (2)

A hall button installed at the hall on each floor,
A landing device installed on each floor and to which a contact signal of the landing button is input;
An elevator control panel including a CPU for controlling various types of information communication with the landing device via a transmission path and controlling the supply of landing power to the landing device;
A circuit breaker that shuts off the landing power source under the control of the CPU when the contact signal of the landing button is not input within a set time;
When enabled , a passenger sensing device that outputs a signal when a passenger approaches the landing,
Switching means for connecting the power source of the passenger sensing device to a power source for transmission that keeps the transmission path of the transmission path in an ON state when the landing power source is shut off, and enabling the passenger sensing device;
With
The transmission path is turned off by a signal output from the passenger sensing device,
The elevator control device according to claim 1, wherein the CPU operates the circuit breaker to restore the landing power supply when the transmission path is turned off when the landing power supply is cut off .   The elevator control device according to claim 1, wherein the circuit breaker shuts off the landing power source other than the top floor under the control of the CPU.

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