JPH0635310B2 - Elevator signal device - Google Patents

Description

The present invention relates to a signal device for an elevator, and is particularly effective for signal transmission between each hall and a machine room.

[Conventional technology and problems]

As the number of floors of elevators has increased and the number of floors in the elevator has increased, the number of wires in the tower that connects between each hall device (car position display device, hall call registration device, etc.) and the elevator control device in the machine room is huge. In order to significantly reduce this number, for example, as disclosed in Japanese Patent Laid-Open No. 58-177874,
There has been proposed a system in which a hall control device equipped with a microcomputer is provided in each hall, and signals are transmitted and received between an elevator control device in a machine room and a hall control device on an arbitrary floor via a hall control device between them. This method will be described with reference to FIG.

FIG. 4 is a diagram showing the entire configuration when applied to an 8-story building, in which COP is an elevator control device installed in a machine room, and H1 to H8 are provided with microcomputers, respectively, and the first floor to 8th floor. Hall control devices installed on the floor, C1 to C
8 is a cable connecting between each hall control device or between the hall control device and the elevator control device, A1 to A8 are call signals from hall push buttons (not shown) on the first to eighth floors, and B1 to B8 are each on the first floor. ~ Output signal to each hall device (not shown) on the 8th floor. The intermediate floor is partially omitted from the illustration.

Although detailed description is omitted in the above configuration, first of all, for the exchange of signals between the hall control device H8 on the eighth floor and the elevator control device COP, the selection signal for the eighth floor sent from the elevator control device COP is “H”. The signal A8 from the landing push button on the 8th floor is fetched by the elevator device to register the call on the 8th floor and the signal B
8, the hall device on the 8th floor is operated to display the car position, the driving direction, and turn on the call answering light. Next 7
The exchange of signals between the hall control device H7 on the floor and the elevator control device COP is performed via the cable C7, the hall control device H8, and the cable C8 while the selection signal on the seventh floor is "H". Similarly, the exchange of signals between the hall control device and the elevator control device on an arbitrary floor is sequentially performed via the hall control devices between them, and when the transmission and reception of the signals up to the first floor are completed, the above operation is performed again from the eighth floor. Is repeated. Therefore, according to this method, it is not necessary to directly connect the elevator control device and the hall device such as the car position display device and the call registration device, the signal line is minimized regardless of the number of floors, and the number of wiring in the tower is reduced. It can be reduced significantly.

However, in the above-mentioned method, the failure of one hall control device or the disconnection of the signal line at one place makes it impossible for all the hall control devices further away to exchange signals with the elevator control device. When it breaks down,
From the top floor to the bottom floor, the call registration answering lights at all the halls cannot be lit up and the car positions cannot be displayed, resulting in a significant drop in service.

[Means for solving problems]

In order to solve the above problems, the feature of the present invention is that, as described above, from the elevator control device to the hall control device on each floor, common data to all floors and data to each floor are sequentially arranged. Which sends a command signal and a selection signal for selecting each hall control device, and each hall control device transmits and receives a signal with the elevator control device when the selection signal to its floor is significant. In the above, each hall control device is a means for counting what number of the data to the each floor the current command signal from the elevator control device is, and at which number of the data to each floor the own floor. Is stored, a time keeping means for detecting that the floor is not selected for a certain period of time, and a count for the data to each floor when the floor is not selected for a certain period of time. And lies in having a means for performing transmission and reception of signals between the stored value is the elevator control device when a match.

[Action]

The hall controller on each floor always counts the command signal from the elevator controller from the number of the data to each floor, and at the time of the first transmission and reception of the signal of the first round, Remember if a floor is selected.
After that, if the hall control device on a certain floor fails and the selection signal is not output to the next floor, if the hall control device on the next floor cannot recognize the selection signal of the own floor even after a certain period of time, the above data is stored. When the value being counted matches the value being counted, it is considered that the floor has been selected and the signal is transmitted / received, and when it ends, the selection signal is output to the next floor. Therefore, the hall control device thereafter can perform normal signal exchange.

〔Example〕

An embodiment in which the present invention is applied to a building with 8 floors will be described below with reference to the drawings.

FIG. 1 shows an internal block diagram of the hall control device H1 on the first floor and the hall control device H8 on the eighth floor. The middle floor is not shown, but the hall control device on the middle floor is shown. The contents are exactly the same. In the figure, 6 is a microcomputer (hereinafter abbreviated as "microcomputer"), 7 and 8 are receiver circuits, 9 and 10 and 11 are driver circuits, and SE.
08 is a selection signal from the elevator controller COP for selecting the hall controller H8 on the 8th floor, and the DTO is a sequence of common data for all floors and data for each floor,
From elevator control device COP to hall control devices H1 to H
8 is a command signal, DTi is sent to each hall controller H1.
~ Response signal from H8 to elevator controller COP, D
Ti8 is H from the microcomputer 6 in the hall controller H8 on the 8th floor.
A signal to the driver circuit 9 in 8, SE87 is an 8th floor hall control device H8 for selecting the 7th floor hall control device H7.
Similarly, SE21 is a selection signal from the hall controller H2 on the second floor for selecting the hall controller H1 on the first floor, and DTi1 is a signal from the microcomputer 6 in the hall controller H1 on the first floor within H1. This is a signal to the driver circuit 9.

FIG. 2 is a timing chart showing the normal transmission / reception of each signal shown in FIG. 1 and the state of the microcomputer 6 in each hall control device H1 to H8. CN1 to CN8 are inside the hall control devices H1 to H8, respectively. RG, which is assigned to the built-in memory of the microcomputer 6 and counts the current command signal DTO of the number of data to each floor, RG
1 to RG8 are number registers which are assigned to the internal memories of the microcomputer 6 in the hall control devices H1 to H8, respectively, and store in which number of the data to each floor the own floor is selected.

FIG. 3 shows a program common to the microcomputers 6 in the hall control devices H1 to H8, and shows a flowchart of a part relating to signal transmission / reception.

Next, a normal operation will be described.

When the microcomputers 6 of the hall controllers H1 to H8 start their operations by turning on the power, etc., they first set a certain time in a timer for failure detection, which will be described later, as an initial operation (procedure 21).
Next, the data counters CN1 to CN8 are set to "-1" (procedure 22). This means that after receiving common data for all floors, the data count for each floor is not performed until the value is set to "0" (procedure 2
3 to 27), so that the data counters CN1 to CN8 can correctly indicate the number of each floor to which data is counted from the common data to all floors.

On the other hand, the elevator controller COP outputs to the command signal DTO common data for all floors (for example, data on the cage position and the cage direction) that are significant to all of the hall controllers H1 to H8 on each floor. At this time, the microcomputer 6 of the hall control device H8 on the 8th floor receives the command signal DTO via the receiver circuit 8 and recognizes that it is the head of the common data for all floors (procedure 23), and allocates it to the internal memory. The existing data counter CN8 is set to "0" (procedure 24), and then all the common data to all floors are input (procedure 25). The microcomputer 6 outputs an output signal B8 to the hall device on the eighth floor via the driver circuit 11 in accordance with the input common data to all floors to operate the hall display device on the eighth floor. The above operation is performed simultaneously and similarly in all of the hall control devices H1 to H7 on the first to seventh floors, and the respective data counters CN1 to CN7 are set to "0".
And output signals B1 to B to the respective hall devices.
7 is output.

Next, the elevator controller COP sends the command signal DTO 8
At the same time as outputting the data of the floor (for example, the data of the response light of the 8th floor), the selection signal SE08 for selecting the hall control device H8 of the 8th floor is set to "H" for a predetermined time. At this time, when the microcomputer 6 of the hall control device H8 on the eighth floor recognizes that the command signal DTO is the beginning of the data for each floor (step 26), the value of the data counter CN8 is set to "1".
Is added (procedure 28). Since the data counter CN8 has been set to "0" in step 24 described above, the command signal DT
O will be updated to a value indicating the number of each floor to which data is counted from the common data for all floors. In this case, the value of CN8 becomes "1". The operations of steps 26 to 28 are performed simultaneously and similarly in all of the hall control devices H1 to H7 on the first to seventh floors, and all the data counters CN1 to CN7 have the same value as the data counter CN8. . Subsequently, the microcomputer 6 in the hall control device H8 on the 8th floor receives the selection signal S received via the receiver circuit 7.
Since E08 becomes “H” and recognizes that oneself has been selected (procedure 29), the timer for detecting that oneself has not been selected is set again for a certain time (procedure 30), and further self The value of the data counter CN8 is stored in the number register RG8 for storing the data to each floor when is selected, that is, the number of the data to each floor that was selectively significant to itself. Is substituted (procedure 31). That is, the value of RG8 becomes "1". Subsequently, the microcomputer 6 inputs all the command signals DTO as data on the 8th floor (procedure 34) and outputs an output signal B8 to the hall device on the 8th floor in accordance therewith to operate the response lights etc. of the hall on the 8th floor. At the same time, the DT is sent through the driver circuit 9.
The data from the 8th floor (for example, the data regarding whether there is a call on the 8th floor) is output to i (step 34).

In this way, when the transfer of the signal between the elevator control device COP and the hall control device H8 on the 8th floor is completed at the predetermined time or the reference clock number, the elevator control device COP and the hall on the 7th floor are next transferred. Signals are exchanged with the control device H7. Therefore, the microcomputer 6 of the hall control device H8 on the eighth floor sets the selection signal SE87 for selecting the hall control device H7 on the seventh floor via the driver circuit 10 to "H" for a predetermined time (step 35). At the same time, the elevator controller COP outputs data for the 7th floor to the command signal DTO. Similarly, the hall controller on the i-th floor inputs the data from the command signal DTO of the elevator controller COP to the i-th floor selected by the selection signal from the (i + 1) th floor, and at the same time outputs the response signal DTi from the i-th floor. Data is output, and when the process reaches the first floor, the process returns to the common data section for each floor, and this is repeated thereafter.

In this way, the elevator controller COP and the 8th floor
After the signals have been exchanged with the hall control devices H1 to H8 on the first floor, the number registers RG1 to RG8 of the microcomputer 6 in the hall control devices H1 to H8 on the first to eighth floors are assigned to the respective floors. A value indicating in what number of data the own floor is selected, that is, "8" to "1" is continuously held.

Next, the operation when a failure occurs in the hall control device will be described.

It is assumed that an abnormality has occurred in the driver circuit of the hall control device H8 on the eighth floor and the selection signal SE87 cannot be output. In this case, the transmission and reception of the signal between the elevator control device COP and the hall control device H8 on the eighth floor ends in the same manner as the above-described operation, and then the elevator control device COP sends the command signal DTO to the data for the seventh floor. However, the selection signal SE87 is not output from the hall control device H8 on the eighth floor. At this time, the microcomputer 6 of the hall control device H7 on the 7th floor
Cannot recognize the selection signal (procedure 29), but when the timer for detecting that he / she is not selected for a certain period of time expires (procedure 32), the data counter CN7 and the number register R are detected.
The values of G7 are compared (procedure 33). Here, the data counter CN7 displays the command signal D regardless of the presence or absence of the selection signal.
The value has been updated to "2" indicating the order of the data for each floor of the TO.

On the other hand, when the number register RG7 is operating normally, the command signal D
A value indicating in which number of data of each floor of TO the self floor is selected is stored, and is “2”. Therefore, the microcomputer 6 compares the data counter CN7 and the number register RG7 (procedure 33) and if they are equal, the data of each floor of the command signal DTO is input as the data to the seventh floor and at the same time the response signal DTi from the seventh floor is input. The same operation as when the selection signal is recognized, such as the output of the data (step 34) and the input / output to / from the hall device on the 7th floor, is performed.

In this way, the transmission and reception of the signal between the elevator control device COP and the hall control device H7 on the 7th floor ends normally even if there is no selection signal for the floor, and the microcomputer controls the hall on the 6th floor. The selection signal SE76 for selecting the device H6 is set to "H" for a predetermined time (step 35). Therefore, the hall control devices H6 to H1 also exchange signals as in the normal state.

In the above example, the case where an abnormality occurs in the driver circuit of the hall control device H8 on the eighth floor has been described. However, even when the microcomputer of the control device fails, the remaining hall control devices H7 to H7 ... H1 normally transmits / receives a signal to / from the elevator control device COP, and even when an abnormality occurs in the hall control device or a plurality of hall control devices on the middle floor, the same remaining hall control devices are normally operated. Operation continues.

Further, in the above-mentioned embodiment, the signals are sequentially exchanged with the control device from the top floor to the bottom floor, but the signals may be sequentially transmitted from the bottom floor to the top floor.

The signal lines of the command signal DTO and the response signal DTi are
Instead of passing through each hall control device as in the above embodiment, it may be provided as a common bus line.

Further, although the above embodiment has been described as applied to the hall device, it can also be applied to a car device such as a unit type car operation panel.

〔The invention's effect〕

According to the present invention, once normal operation is performed on the hall control devices on each floor, even if a failure occurs in any of the hall control devices (a plurality may be provided) thereafter, the remaining hall control devices are normally operated. Reliability can be greatly improved because continuous transmission and reception of various signals can be continued, and this can be easily realized by software common to the microcomputer of each hall control device without changing the hardware such as the configuration of the signal line. You can

Further, if the signal lines of the command signal DTO and the response signal DTi have a common bus line configuration that does not pass through each hall control device, even if the hall control device is not only broken down but also any hall control device is removed by mischief or the like. It is possible to continue the normal exchange of signals with the remaining hall control devices.

In addition, if the number register in the microcomputer is made non-volatile (such as backup by battery or use of non-volatile memory), even if the myco is restarted by turning the power on again, the rest of the normal landing equipment will always be normal. Signal exchange is resumed. In addition, when the hall control device that is in failure or removed is restored, the hall control device also resumes normal operation from that point, so repair is easy without the need to temporarily suspend the elevator to replace parts. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing the inside of the hall control device of the present invention, FIG. 2 is a timing chart showing the normal transmission and reception of each signal, and FIG. 3 is a flowchart of a program common to the microcomputers of the hall control devices. , FIG. 4 is a diagram showing an overall configuration common to the conventional art and the present invention. COP ... Elevator control device H1 to H8 ... 1st to 8th floor hall control device C1 to C8 ... Cable 6 ... Microcomputer 7,8 ... Receiver circuit 9,10, 11 ... Driver circuit SE08, SE87 , SE21 …… Selection signal

Claims (1)

[Claims] 1. A hall control device for controlling a car position display device and a hall call registration device on the floor by a microcomputer is provided at each hall on each floor, and each hall control device is connected to an elevator control device in a machine room. A signal line is sequentially connected in series, and a command signal in which common data for all floors and data for each floor are sequentially arranged is repeatedly transmitted to the signal line, and at the same time the elevator control device controls each hall. Sending a selection signal for selecting a device, each hall control device transmits and receives a signal to and from the elevator control device when the selection signal to the floor is significant, and selects the hall control device on the next floor. In an elevator signaling device that sends out signals to sequentially transmit selection signals, each of the hall control devices has a current command signal from the elevator control device. A means for counting the number of the data to the floor, a means for storing in which number of the data to each floor the own floor is selected, and that the own floor is not selected for a certain period of time If the own floor is not selected for a certain period of time with the time-measuring means for detecting, when the count value and the stored value for the data to each floor match, a signal is exchanged with the elevator control device. A signal device for an elevator, comprising: