JPS61164355A - Fault informing device of elevator - Google Patents

Abstract

PURPOSE:To troubleshoot easily a fault such as disconnection or short-circuit of a transmission line by using a collision supervisory device adjusting a transmission signal of fault information of the same time from each elevator so as to flicker a lamp at a fault of the transmission line. CONSTITUTION:If a fault such as disconnection or short-circuit of a transmission line 5 takes place, a power supply to a photocoupler 8 is interrupted and a transmission monitor signal S3 cannot be logical ''1''. In this case, in transmitting fault information, even when a transmission signal S2 is logical ''1'', since a transmission monitor signal S3 remains logical ''0'', an EX-OR gate 9 is opened, a dropout timer 10 is set, a transmission inhibition signal S4 is logical ''1'' to bring the level of the transmission signal to logical ''0''. Then the EX-OR gate 9 is closed, and the dropout timer 10 is turned of after a prescribed time, a transmission inhibition signal is logical 1, the transmission signal S2 becomes logical ''0'' so as to start transmission of fault information. A transmission inhibition signal S4 repeats logical ''0'', ''1'' in the period of a time limit of the dropout timer 10 and a lamp 11 repeats frickering at the same time.

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention transmits failure information of a plurality of elevators to a single communication device using a single transmission line, and in which failure information of a plurality of elevators is transmitted to a single communication device using a single transmission line. This invention relates to a failure reporting device for next elevators, which allows failures such as the following to be easily discovered.

[Conventional technology]

In the event that a transmission line to a communication device in an elevator failure notification device fails due to disconnection or short circuit, the transmission path is removed from the failure notification device under its eaves and checked by conducting a continuity test or the like.

[Problem that the invention seeks to solve]

In the case of the above-mentioned failures, it is necessary to remove each transmission line from the failure reporting device and check it with a continuity test, etc., which is a time-consuming process, and the problem is that failures in the transmission line cannot be easily discovered.几.

This invention was made in the ninth attempt to solve these problems, and its purpose is to provide an elevator failure reporting device that can easily detect failures caused by disconnections, short circuits, etc. in transmission lines, and can be manufactured at low cost. It is something to do.

[Next Means for Solving Problem C] A second collision monitoring mechanism and a lamp to indicate a failure such as a disconnection or short circuit in the transmission line are provided.

[Effect]

By utilizing the sophisticated collision monitoring mechanism that adjusts the transmission signal described above, when a failure such as a disconnection or short circuit in the transmission line occurs, it is automatically detected and the lamp blinks.

〔Example〕

FIG. 1 is a block diagram of an elevator failure reporting device according to an embodiment of the present invention.

In the figure, (1) is an elevator control panel, and this control panel (1) is assumed to be the control panel of elevator No. 1.

(1n) is the control panel of elevator n.

(2) is a fault detection circuit for detecting a fault in the elevator; (8) is a coding circuit for converting the fault factor signal 8□ output from the fault detection circuit (2) into a serial code; (4) is a photocoupler that is serially coded by the coding circuit (8) and is turned on and off depending on the transmission signal date □, (5) is the transmission line, (6) is the communication device, and (γ) is turned on by the signal to the transmission line. , photocoupler to turn off, (8) is 1
S3 is a photocoupler that turns on and off depending on the transmitted signal when a failure occurs in an elevator in a unit other than the elevator unit.
is a transmission monitor signal output from this photocoupler (8), (9) is an EX-OR gate, (to) is a dropout timer, 84 is a transmission prohibition signal output by setting the dropout timer (to), (B) is a lamp that lights up when the transmission prohibition signal S4 is output, and this lamp (B) is used to detect a failure in the transmission line.

The IEZ diagram is an operation time chart of the above configuration. In the figure, t is the time limit of the dropout timer, t2 is the rising interval of the transmission signal, and t2 (t is 0).
A dashed-dotted line when a transmission line is abnormal indicates a failure such as a disconnection or short circuit in the transmission line.

Next, the operation of the above configuration will be explained.

First, normal transmission operation will be explained.

When some kind of failure occurs in the elevator, the failure is detected by the failure detection circuit (2) and the failure cause signal S is set to 1.
1'. This failure factor signal S is encoded in the coding circuit (
8), and if the transmission prohibition signal S4 is '0', it is converted into a predetermined serial code by the encoding circuit (8) and output as the transmission signal S2, and then sent to the photocoupler (4).
The communication device (6) is turned on and off via the transmission path (5).
Failure information is sent monthly to

Here, since the transmission signal S2 and the transmission monitor signal S3 output from the photocoupler (8) are the same signal, EX
-OR gate (9) does not open.

Therefore, the dropout timer aQ maintains the reset state, no transmission prohibition signal is generated, and the lamp (6)
It also doesn't light up.

Next, the simultaneous transmission operation of failure information of each elevator will be explained.

If a failure occurs in an elevator in another unit other than Unit 1,
Since the other unit outputs the transmission signal 82, the transmission line (6) turns on and off, but the photocoupler (8) detects this and outputs the transmission monitor signal 83, and this transmission monitor signal 8 is % 1N, Repeat %0#0 At this time, since the transmission signal 82 of unit 1 is $01, the RX-OR gate (9)
A timing occurs when the signal becomes ' 1 N, and the dropout timer is set at this timing.

As a result, the transmission prohibition signal S4 becomes 11#, and even if the No. 1 machine tries to transmit a fault to the virtual machine, the coding circuit (8
) Otherwise, the transmission signal S2 is not output. In addition, when the transmission prohibition signal S4 is output, the lamp (1 sword) continues to light up. Next, when the transmission of the failure information of another machine is completed and the transmission monitor signal 83 continues to be in the '0' state, the EX-OR gate (9)
The output continues to be 10', and after a predetermined time, the dropout timer αQ turns off, the transmission prohibition signal S4 becomes 10', and the lamp (b) also goes out. If necessary, the transmission signal 82 can be generated by the above operation and transmitted to the communication device (6).

Next, we will explain the operation in the case of a transmission line abnormality.Now, if a failure such as a disconnection or short circuit occurs in the transmission line (6),
Unless the power to the photocoupler (8) is cut off, the transmission monitor signal 83 cannot become 11'.

At this time, when attempting to transmit failure information, the transmission signal 82
is 11', the transmission monitor signal 83 is 10
' remains, EX-OR gate (9) opens,
The dropout timer αQ is set, the transmission prohibition signal S4 becomes 11', and the transmission signal becomes $01. Then, the EX-OR gate (9) closes, the dropout timer (to) turns off after a predetermined time, and the transmission prohibition signal reaches %.
11, the transmission signal S becomes 10', and transmission of failure information is attempted again.

In this way, the transmission prohibition signal S, repeats %01%il at the cycle of the dropout timer alarm, and at the same time, the lamp CIη also repeats blinking. Therefore, this lamp (
B) It becomes possible to easily discover a failure in the transmission line by blinking.

〔Effect of the invention〕

As described above, this invention utilizes the transmission signal collision monitoring mechanism that is originally provided in the elevator failure notification device when failure information from a plurality of elevators is output at the same time, and blinks the lamp to detect the failure of the transmission path. Therefore, such transmission path failures can be easily discovered and dealt with quickly, and can be manufactured at low cost without complicating the configuration.

[Brief explanation of drawings]

Fig. 1 is a block diagram showing an embodiment of an elevator failure notification device according to the present invention, and Fig. 2 is an operation time chart of the above device. The detection circuit, (8) is the encoding circuit, (4), (8) l(
γ) is a photocoupler, (5) is a transmission line, (6) is a communication device, (9) is a gx-OR gate, (to) is a dropout timer, (6) is a lamp, 8□ is a failure cause signal, 82
is a transmission signal, 83 is a transmission monitor signal, and S4 is a transmission prohibition signal.

Claims (1)

[Claims] In an elevator failure reporting device that transmits failure information of multiple elevators to a single communication device using a single transmission path, simultaneous transmission from each elevator is required when multiplexing the low transmission path. 1. A failure reporting device for an elevator, characterized in that a collision monitoring mechanism that adjusts a transmission signal of failure information is used to blink a lamp in the event of a failure in the transmission path.