JPS60197573A - Signal transmitter for 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 a signal transmission device for an elevator in which a machine room and a car are each provided with a signal control device that transmits and receives signals in a temporally serial manner and processes the received signals. .

[Prior Art] When an electromagnetic relay is used as a means for registering and displaying elevator calls, one signal line and one relay are required for each -1 signal. For this reason, as the number of floors increases, the number of signal lines, relays, etc. increases, and the control device becomes larger.
Wiring costs will increase. To solve this problem, for example, an elevator signal transmission device shown in FIG. 1 has been proposed.

This is a circuit diagram of the part related to call registration, and corresponds to the 1st floor, 2nd floor...
(hereinafter referred to as memory) (11), (21)... and A
ND game) (12), (22), etc. are provided. Among these, the terminal T of the memory (11) is connected to the signal line (1) that transmits the clock signal, and the terminal T is connected to the signal line (2) that transmits the reference signal that is "H" for one period of the clock signal.
), and also connected to the terminal T of the memory (21).
is connected to the signal line (1), but the terminal is connected to the memory (11)
Hereinafter, the terminal T of the memory corresponding to the nth floor is connected to the signal line (1), and the terminal is connected to the terminal Q of the memory provided corresponding to the landing one floor below. Ru.

On the other hand, one input terminal of the AND gate (18) is connected to the terminal Q of the memory (11), and the other input terminal is connected to the hall button (1).
3), the output terminal is connected to the signal line (3) that transmits the hall call signal.
), and one input terminal of the AND gate (n2) corresponding to the nth floor is connected to the terminal Q of the memory (nl).
The other input terminal is connected to the hall button (n3), and the output terminal is connected to the signal line (3).

Thus, the clock signal is sent to the signal line (1), and the clock signal is sent to the signal line (2).
), the output of the terminal Q of the memory (11) is 1 of the clock signal when the reference signal becomes "L".
Only the period becomes "H". Similarly, memory (21)...
- Pulse signals delayed by one cycle of the clock signal are sequentially output from the terminal Q of (nl).

Here, if the landing button (13) on the first floor is pressed, when the terminal Q of the memory (11) becomes rHJ, the AN
D game) The output of (12) becomes “H” and the signal line (3
), the hall call signal is transmitted to a signal control device in a machine room (not shown). If the hall button (23) on the second floor is pressed, when the terminal Q of the memory (21) becomes rHJ, the output of the AND gate (22) becomes "H", and in the same way, the hall call signal is output. is transmitted via the signal line (3).

Even if the hall buttons (12) and (22) are pressed at the same time, the times at which the terminals Q of memories (11) and (21) reach "Hj" are different, so in the end, the hall buttons (12) and (22) are pressed in series in time. The button status signal is sent to a signal controller in the machine room and processed there.

Although conventional signal transmission equipment that uses the signal transmission method shown in Figure 1 can significantly reduce the number of signal lines,
As the number of floors increases, the number of signals increases, and the transmission time of these signals also increases dramatically, so for example, the time from pressing the destination button in the car until the destination light turns on is quite long for passengers. There was something I could feel.

Note that when the response delay to these calls is several hundred m5ec, it is hardly considered a problem in practice, but the delay in transmission time when opening the door often becomes a problem in relation to the processing time.

[Summary of the Invention] The present invention has been made for the purpose of eliminating the above-mentioned drawbacks.
By dividing the signal to be transmitted into multiple blocks according to the degree of light reception and transmitting only the signal of the block whose state has changed, transmission time delays are considered a problem even in high-floor elevators with a large amount of information. The present invention proposes an elevator signal transmission device that is unnecessary.

[Embodiment of the Invention] An embodiment of the present invention will be described below with reference to the drawings. In Fig. 2, (100) is a control panel, or a signal control device in the machine room, which mainly controls the elevator with a computer (hereinafter referred to as CPU) (101), which converts the transmitted signal into parallel and serial, and converts the received signal directly. A transmission converter (102) using, for example, an integrated circuit 8251A for parallel conversion is provided. Note that the interfaces with the control unit of the electric motor and the call button of the hall, etc. are omitted because they have no direct relation to the present invention.

Next, (200) is a signal control device in the car, which is connected to in-car devices (204) such as push buttons, response lights, and indicators via an interface (203), and performs signal processing and control.CPt1 (201 ) and a transmission converter (202) similar to that described above.

In addition, (300) is the signal control device (100) and (2
00), and consists of two lines that send signals from the car to the machine room and from the machine room to the car.

Note that this signal line may be an electric wire or an optical fiber, and in some cases, the signal line may be removed and a focal line machine may be connected after the transmission converter1. Good too.

Next, the operation of this embodiment will be explained below with reference to the transmission formats shown in FIGS. 3(a) to 3(c).

Generally, the transmission converters (102), (202) are usually 6
Since the design is such that the commands from the CPU are serialized for each 8-bit signal and the serial signals are transmitted, it is assumed here that data is transmitted using 8 bits as one frame.

First, as shown in Figure 3, 2 pies) (byte)
A total of three block signals forming one transmission block are constructed. In other words, bit positions (401) to (40
8), (411) to (41B), (501) to (50
8), (511) to (518), (I(01) to ([1
08) and (611) to (fl18) are taken as one frame, and two frames are taken as one transmission block.

Of these, (401), (411), (501), (5
11), (601).

(611) are bits that indicate whether it is the 1st byte or the 2nd byte in one block by rl'' and ro'', respectively.

Also, (402) and (403), (502) and (5
03), (fi02) and (603) are bits indicating the transmission mode. For example, rooj is set for mode "0" in FIG.
”, and is indicated as “lO” for mode “2” in FIG.

This allows 8-bit signals to be used for mode and
You can specify whether the byte is the 2nd byte.

The other bits are signal bits and have different meanings depending on the mode.

Then, bits (404) to (4
08) and (412) to (418) are individual signals with high priority. For example, when transmitting a signal from the car to the control panel, the beep (404) is the car door open button signal, and the bit (405) is the car door open button signal. It is used individually, such as a door close button signal.

Next, mode “1” is a floor-specific signal with bits (512) to
(518) to specify the floor, for example, the lowest floor is roooooooJ, and the higher floors are roooooolJ.

It changes like roooooloJ, rooooool IJ... and further, bits (504) to (508)
is data corresponding to the floor. For example, when transmitting a signal from the car to the control panel, bit (504) commands "turn on the button", bit (505) commands "turn off the button", etc. When transmitting a signal from the control panel to the car, the bit (504) is used for a signal such as "response light turned on" and the bit (50[i) is used for a signal such as "indicator turned on".

Next, mode "2" is a signal similar to mode "1", but the driving mode selection switch inside the sliding door of the operation panel, that is, the switch to select whether or not the driver is in 1, etc. Sui, which is only used.

Used for signal.

For such a data structure, the CPU (101), (
201) respectively perform the operations shown in the functional blocks of FIG.
), (A3), and then the state change detection means (B) detects whether or not these stored contents have changed after a predetermined period of time has elapsed, and based on this detection signal, the signal transmission device ( C) transmits only signals of blocks that have changed.

As a result, mode "0" in Fig. 3(a) is 10 m se
It is transmitted at intervals of about c, and modes rlJ and "2" are transmitted every time the state changes.

In the above embodiment, an easily available 8-bit transmission converter is used, but substantially the same signal processing as described above can be performed using a 4-bit, 16-bit, etc. transmission converter.

[Effects of the Invention] As is clear from the above explanation, the elevator signal transmission device of the present invention divides the signals to be transmitted into a plurality of blocks according to the priority, and also divides the signals to be transmitted into a plurality of blocks according to the priority.
Since only the link signal is transmitted, even in high-floor elevators where the amount of information inevitably increases, delays in transmission time can be minimized, and passengers can be prevented from feeling anxious. This makes it possible to control the operation without any problems.

[Brief explanation of drawings]

FIG. 1 is a circuit diagram showing the configuration of a conventional device, FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 3 is a transmission format for explaining the operation of the embodiment. FIG. 4 is a block diagram showing the detailed configuration of the same embodiment. (100), (200)...signal control device, (1
01), (201)...computer, (102
L (202)... Transmission converter, (203)...
Interface, (204)... In-car device. My agent is Masu Oiwa. Figure 1 Figure 2

Claims (3)

[Claims] (1) In an elevator signal transmission device in which a signal control device that transmits and receives signals in a temporally serial manner and processes received signals is provided in the machine room and the car, respectively,
The signal control device includes a storage means that divides the signal to be transmitted into a plurality of blocks according to priority and stores the updated signals at predetermined time intervals, and a status change that detects whether or not the contents of the storage means have changed. 1. A signal transmission device for an elevator, comprising a detection means and a signal transmission means for transmitting only signals of blocks whose contents have changed due to the state change detection means. (2) The signal transmission device for an elevator according to claim 1, characterized in that the signals to be transmitted are divided into blocks of signals related to floors and signals 11''f unrelated to floors. (3) Signals to be transmitted are divided into blocks into a signal group unrelated to the model and the number of stops, a signal group related to the number of stops, and a signal group that changes depending on the model and specifications. The signal transmission device for the elevator described.