JPS59177278A - Annunciator for trouble of elevator - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an improvement in a failure display device provided in an elevator control device.

[Technical background of the invention and its problems]

Recently, elevators have become popular as buildings become taller.
Elevators are installed in most buildings, especially in large cities. On the other hand, due to recent advances in semiconductor technology, a large number of semiconductors are being used in elevator control devices to improve performance. With this improvement in performance, control methods have also become more complex, and failures in control devices have also become more complex. Furthermore, as mentioned above, due to the increase in the number of installed elevators, even if a failure occurs, it is necessary to detect the failure and perform recovery as soon as possible. Furthermore, due to the recent labor shortage, it has become difficult to have sufficient maintenance personnel on standby.

FIG. 1 is a block diagram showing an example of an elevator control device. In the figure, 1 is an external signal input part in the elevator system, 2 is a sequence control part, 3 is an operation control part, 4 is a motor control part including the main circuit, 5 is an external output part, 6 is an electric motor for driving the elevator, and 7
indicates a failure indicating circuit.

In the figure, various signals in the elevator system are input to an external signal input section 1 of a control device. and,
This input signal is given to the sequence control section 2 and the operation control section 3 as necessary. The sequence control unit 2 mainly processes calls from passengers, and the operation control unit 3 centrally performs functions related to driving including inspection driving and the like. Now, in response to the signals input to each section 2.3, a signal is output from each section to perform a predetermined operation, and the signal is exchanged between the sequence control section 2 and the operation control section 3 using a signal S8. In addition, a signal s9 is sent from the operation control section 3 to the motor control section 4, and the motor control section 4 finally applies a controlled voltage to the elevator drive motor 6 to move the elevator according to a predetermined request.

Further, from the sequence control section 2, predetermined display signals such as call registration status, elevator position, etc. are sent to the external output section 5. From here, the above-mentioned signal is sent to the car, boarding area, etc., and is notified to the passengers. On the other hand, each of these sections, particularly the sequence control section 2, detects failures such as inconsistencies in external signals. The motor control unit 4 also detects faults related to motor control, such as a speed feedback failure, a speed reference signal failure, and overheating of the motor 6. All of these failure detection signals are collected by the transmission line 10.11 to the operation control unit 3, and the operation control unit 3 takes measures to safely rescue the elevator passengers and protect the elevator system according to the situation. Do it properly. It's a trench.
The ones that need to be displayed among these fault signals are:
The signal is sent to the failure display circuit 7 and displayed. And rescue,
At the time of recovery, etc., the cause is investigated and countermeasures are taken based on the display contents of the failure display circuit 7.

Next, details of the conventional failure display circuit 7 will be explained using FIG. 2. In FIG. 2, S12 indicates the various fault detection signals mentioned above, 13 indicates the input buffer circuit in the operation control unit 3, 14 indicates the fault handling circuit, 15 indicates the output buffer circuit, and S16 indicates the safety circuit control signal. It is. The above-described failure detection signal S12 is detected by each section and input to the input buffer circuit 13, and most of the signals are sent to the failure handling circuit 14.

The failure handling circuit 14 outputs a safety circuit control signal 816 to take appropriate measures in response to these signals, thereby safely stopping the elevator and preventing it from moving.

These operations are performed not only based on the failure detection signal, but also using other signals such as whether the door can be opened, and the safety circuit control signal S is also used as an output.
It outputs not only 16 but also various signals. In this description, for convenience, the above signal will be used as a representative. Further, the failure handling circuit 14 detects actual failures among the above-mentioned failure detection signals, and sends the treated signals to the output buffer circuit 15 for display, and further sends them to the failure display circuit 7. will be displayed.

In this case, the fault display circuit 7 has conventionally used a mechanical display relay called a TARDAT relay or a light emitting diode as its display element, but the former is relatively large in size, so it has been replaced with an IC. was done,
It is not compatible with other microcomputerized circuits, causing problems in terms of implementation. Furthermore, although the latter is smaller and consumes less power, the failure situation has been resolved, but if the power is cut off, it is impossible to display the display, which is very inconvenient for investigating the cause and taking countermeasures.

[Purpose of the invention]

The present invention was made to solve the above problems,
The purpose is to create a small and highly reliable elevator fault display device that can accurately display the fault status even if the fault has been resolved and the stain source has been cut off, allowing elevator passengers to be rescued safely and quickly. It is about providing.

[Summary of the invention]

In order to achieve the above object, the present invention stores a failure detection signal detected in elevator control by a failure detection means in a small self-holding relay, and displays this stored signal using a display means. It is characterized by

[Embodiments of the invention]

An embodiment of the present invention shown in the drawings will be described below. FIG. 3 shows an example of a circuit configuration of a failure indicating device according to the present invention. In the figure, S17 is a failure display signal from the operation control unit 3, 18 is a small self-holding relay, 19 is its set coil, 20 is the first positive power supply bus, 2 is the contact of the relay I8, and 22 is the A current limiting resistor, 23 a second positive power supply bus, 24 a display light emitting diode, 25 a common line, 26 a reset coil, 2
7 is a reset switch, which is configured as shown in the figure.

In the figure, when a failure is detected and this failure signal is actually activated, a failure indication signal S17 is sent from the operation control section 3. By making the signal S17 common, a voltage is applied between the first positive power supply bus 2θ and the set coil 19 of the self-holding relay 18.
is excited and its output contact 21 is closed. As a result, current flows through the light emitting diode 24 and the current limiting resistor 22 due to the voltage between the second positive power supply bus 23 and the common line 25, and the light emitting diode 24 emits light to indicate a failure. However, in this case, it is assumed that the contact 21 is open before the failure indication signal S17 is sent.

Even if the failure indication signal S17 is no longer sent, for example due to the failure situation being resolved or the power being cut off, when a failure is being displayed in this way, the self-holding relay 18 can be used to Therefore, the failure state is maintained as is.

Also, by turning it on again, it is possible to display the previous state. After investigating the cause and taking countermeasures based on the failure indication, voltage is applied to the reset coil 26 by closing the reset switch 27, and the closed contact 21 is opened to cause the failure. The display is canceled and the next failure display signal S17 is inputted.

As described above, the fault display device of the present invention stores the fault display signal SZ7 detected by the operation control unit 3 in the elevator system in a small self-holding relay, and displays this stored signal using the light emitting diode 24. As a result, the failure situation can be accurately memorized and retained even after the failure situation is resolved or the power is cut off, allowing for faster investigation of the cause of the failure and countermeasures, thereby improving passenger safety and customer service. It is possible to improve the services provided to customers.

Incidentally, although the above embodiment has been shown for only one circuit, the same applies to other failure indication signals.

Moreover, although the case where the present invention is applied to the failure display circuit 7 has been described above, the small self-holding relay 18 has a size comparable to that of an IC, and can also be provided in the operation control section.

[Effects of the Invention] As explained above, according to the present invention, a failure detection signal detected by a failure detection means in an elevator is stored in a self-holding relay, and this stored signal is displayed on a display means. This allows us to create a compact and highly reliable elevator that can accurately display the failure status and rescue elevator passengers safely and quickly even if the failure status has been resolved and the stain source has been shut off. fault display device can be provided.

[Brief explanation of the drawing]

Figure 1 is a block diagram showing the elevator control device, Figure 2 is a block diagram showing the elevator control device.
The figure is a block diagram showing a conventional failure indicating circuit, and FIG. 3 is a circuit diagram showing an embodiment of the present invention. 1... External signal input section, 2... Sequence control section, 3... Operation control section, 4... Motor control section,
5... External output unit, 6... Elevator driving electric motor, 7... Failure display circuit, S12... Failure detection signal,
13... Input buffer circuit, 14... Failure treatment circuit, 15... Output buffer circuit, 816... Safety circuit side division signal, S17... Failure display signal, 18... Self-holding relay , 19... set coil, 20.23.
...Power bus bar, 21...Contact, 22...Current limiting resistor, 24...Display old light emitting diode, 25...Common line, 26...Reset coil, 27...Reset switch. 10- Tube 1 Figure 2 Prisoner 13

Claims (1)

[Claims] The present invention is characterized by comprising means for detecting a failure occurring in elevator control, a self-holding relay for storing the detected failure signal, and means for displaying the failure signal stored in the self-holding relay. Fault indicator for elevators.