JPH10167599A - Monitoring device for elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To use serial transmission so as to confirm a signal system transmitting by the use of a pair of wirings by providing two methods, a method transmitting/receiving by the use of a pair of wirings and a method transmitting/ receiving a signal by serial transmission, for a transmission system transmitting/ receiving between a control device and a monitoring device. SOLUTION: As starting check-up, by providing an inspection switch 15 on an elevator monitoring device 1 so as to make an inspection mode, a microcomputer 12 outputs a command transmitting an emergency signal to an input/ output interface 14 and a communication port 13, the command is delivered from the input/output interface 14 to an input/output interface 11 through a one-to-one transmission system 18, and the information is delivered to a communication port 10 by a microcomputer 9. By checking that the information is transmitted from the communication port 10 to the communication port 13 through serial transmission 17, the one-to-one transmission system 18 is checked whether it is normal or not.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator monitoring apparatus.

[0002]

2. Description of the Related Art Conventionally, transmission between an elevator control device and a monitoring device is mainly performed by a method of transmitting and receiving each signal using a pair of wirings. I have. In addition, JP-A-3-230624
In Japanese Patent Laid-Open Publication No. H10-209, there is a case where transmission is performed in a dual system and the reliability is higher.

[0003]

As items for monitoring the elevator, for example, there are signals from the elevator control device, such as the direction of elevator of the car, the position of the car, and abnormalities of the elevator. There are a command, a specific floor non-stop command, etc., and the importance differs depending on the signal. As described above, in some cases, such as a fire control command or the like, if the transmission becomes abnormal, it may lead to personal injury, and the reliability of the transmission must be increased. However, in the prior art signal transmission,
In the case of a method in which each signal is transmitted through a pair of wires, it is confirmed that a signal that is constantly transmitted has a normal transmission system.
In an emergency, for example, fire control operation is not used unless a fire occurs, and even if used, disaster prevention drills etc.
This is the number of times, and since the transmission system is not normally used even if it becomes abnormal, it does not notice the abnormality and realizes that no command is issued for the first time when used in the event of a fire, and does not serve as a monitoring function. In the serial transmission method, since the transmission system is always used, the transmission system has been confirmed.However, if an error occurs, all signal transmission cannot be performed and the monitoring function will not be performed at all until the system returns. there were.

[0004]

According to the present invention, in order to solve the above-mentioned problems, a method of performing one-to-one transmission using a pair of wires and a method of performing serial transmission are used together. As signals transmitted by a pair of wirings, only important signals are transmitted, and serial transmission can transmit all signals including important signals. In addition, an inspection function for confirming a transmission system of a signal transmitted by a pair of wires is provided.

[0005] With the above configuration, since the signal transmitted by the pair of wires is also transmitted by serial transmission, in the inspection mode, the signal transmitted by the pair of wires is simulated and operated by the serial transmission. By returning the operation, it is possible to confirm that the signal system transmitted by the pair of wires is normal. This inspection method may be performed by an external switch, or may be performed automatically such as at a time period or when the power is turned on. By performing this check, the reliability of transmission is high even for important signals that are rarely used. In addition, even if the multiplex transmission system becomes abnormal, important signals can be transmitted at worst by transmitting each important signal through a pair of wires, providing a highly reliable monitoring system. it can.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a schematic configuration of an elevator and an elevator monitoring device. Generally, the elevator control device 3 is located in a machine room on the roof of a building, and a car 8 is provided on each floor. In addition, the monitoring device may be a building separate from the elevator, such as an administrator room serving as an entrance on the first floor of a building, a central monitoring center in a large-scale building, and the transmission / power supply between the elevator control device 3 and the elevator monitoring device 1 may be provided. The length of the cable 4 is increased, and the route is complicated with other cables. FIG. 2 shows an embodiment of the transmission method of the present invention. In the elevator control device 3, the microcomputer 9 controls the car 8, and transmits information on the state of the elevator to the elevator monitoring device 1. Here, normal information such as the direction of elevation and the position of the elevator car 8 and the state of the position is transmitted from the communication port 10 to the elevator monitoring device 1 by serial transmission. In addition, information that is abnormal or requires urgency, such as when an abnormality occurs in the elevator device and the service becomes unavailable, is individually performed by the elevator control device 3 and the elevator monitoring device 1 via the cable 18 by one-to-one transmission. Here, the information that needs to be abnormal or urgent is transferred to the microcomputer 9 from the input / output interface 11 so that the information that needs to be abnormal or urgent can be transmitted through the communication port 10. Next, in the elevator monitoring device 1, the microcomputer 12 takes in the transmission information from the elevator control device 3 from the communication port 13 and the input / output interface 14 and inputs / outputs the information.
Then, commands such as floor display, abnormal display, and buzzer sound are issued, and the input / output interface 14 turns on the indicator lamp and sounds the buzzer. The input of the key switch on the monitoring panel 2 is input to the input / output interface 14, and an emergency command such as a fire control command in the event of an abnormality in the building is directly transmitted to the elevator control device 3 via the one-to-one signal transmission cable 18. In addition, information of a normal operation switch such as a parking switch and an emergency signal at the time of abnormality can be transmitted. In normal operation, serial transmission 17 communicates normal information, and one-to-one transmission 18 communicates emergency signal transmission. The serial transmission 17 is always performed, and the determination of the normal / abnormal is immediately known. However, since the transmission system of the one-to-one transmission 18 is not used unless it is an emergency, the determination of the normal / abnormal is unknown. For this reason, the inspection switch 15 is provided in the elevator monitoring device 1 as a start-up inspection, and the microcomputer 12 is set to the inspection mode so that the microcomputer 12
4. A command to transmit an emergency signal to the communication port 13 is issued, and the information is passed from the microcomputer 9 to the communication port 10 via the one-to-one transmission 18 from the input / output interface 14 to the input / output interface 11 to perform communication. By checking transmission from the port 10 to the communication port 13 through the serial transmission 17, it can be checked whether the one-to-one transmission system is normal.
Now, the inspection switch 15 is provided on the monitoring panel 2. However, it is possible to inspect the switch at any time, such as when the power is turned on, the time period is determined by the timer, or the maintenance is performed.

[0007]

According to the present invention, a transmission system for transmitting and receiving between a control device and a monitoring device can be divided into a transmission method using a pair of wirings and a method for transmitting and receiving signals by serial transmission. With this arrangement, it is possible to confirm a signal system that performs transmission using a pair of wires using serial transmission, thereby increasing the reliability of a signal system that performs transmission using a pair of wires. Since the worst function can be performed by performing transmission by the wiring of, a more reliable monitoring system as an elevator monitoring device can be provided.

[Brief description of the drawings]

FIG. 1 is a block diagram of an elevator and a monitoring device in a building.

FIG. 2 is a block diagram of an embodiment of an elevator control device and an elevator monitoring device according to the present invention.

[Explanation of symbols]

1 ... elevator monitoring device, 3 ... elevator control device,
9, 12 microcomputer, 10, 13 communication port, 11, 14 input / output interface, 15 check switch, 16 power cable, 17 serial transmission cable, 18 one-to-one signal transmission cable.

Claims (5)

[Claims] The present invention relates to an elevator monitoring device for displaying operation status of an elevator by a lamp or a display, performing operation management while monitoring the displayed content, and issuing a specific operation command such as when a building is abnormal. An elevator monitoring apparatus, comprising two types of transmission systems, a method of transmitting and receiving signals using a pair of wirings for each signal unit and a method of transmitting and receiving a plurality of signals by serial transmission. . 2. The system according to claim 1, wherein the serial transmission signal is also transmitted using a pair of wirings, and whether the transmission system of the signal transmitted using the pair of wirings to the monitoring device is normal. An elevator monitoring device equipped with a function to check for abnormalities. 3. The elevator monitoring apparatus according to claim 2, wherein the function of performing the inspection is to automatically inspect whether a signal transmission system performed using a pair of wirings is normal when the power is turned on. 4. The elevator monitoring device according to claim 2, wherein an inspection mode switch is provided in the monitoring device or the elevator control device, and checks whether a signal transmission system performed using a pair of wires is normal. 5. An elevator monitoring apparatus according to claim 2, wherein as a function of performing the inspection, the hardware or software is used to automatically inspect whether a signal transmission system performed using a pair of wirings in a time cycle is normal or not. .