JPS5859175A - Calling register 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 The present invention relates to an elevator call registration device, and particularly relates to an advance registration button and its response light mounted inside the car, a call button and its response light mounted in the hall, and an elevator machine room. The present invention relates to a call registration device suitable for reducing the number of wires between.

In recent years, microcomputers (hereinafter abbreviated as microcomputers) have been used for sequence control of elevators.

FIG. 1 is a block diagram of a conventional microcomputer-controlled elevator call registration device, showing floors 1 to n. In Fig. 1, 11 to 1n are call registration buttons (
Destination call, hall call), 21-2. .

is the response light, 31-3. , is an input buffer that converts button presses into electrical signals; 4. 4o is an output buffer for driving an answering light for displaying call registration, and output buffers 31 to 3n and 41 to 4Il are driven by a computer ε.

FIG. 2 is a circuit diagram showing the details of the first floor portion of FIG. 1, and the other floors have the same structure. In Figure 2, n
l'l is the call registration button, 2. The response light %31 is an input buffer, which is composed of a converter 31 and a signal sending buffer 32. The converter 31 is not an IC circuit, and when the call registration button 11 is pressed, it sends a signal. trust buffer 32
Converts to a voltage matched to the voltage level of 4. 1 is an output cover sofa, which is composed of a thyristor (hereinafter abbreviated as SCR) 41 which is an output signal element for lighting a response lamp, and a gate signal buffer 42 which provides an electric signal to the gate of 5CR 41. Reference numeral 5 denotes a peripheral, interface, or adapter (hereinafter abbreviated as PIA) that controls the input/output of the microcomputer, and 6, 7.8 denotes a central processing unit (hereinafter referred to as Mr) II of the microcomputer, respectively. ), read-only memory (hereinafter abbreviated as ROM) that stores programs,
This is random access memory (hereinafter abbreviated as RAM).

When PIA5 uses an 8-bit microcontroller, its communication data bus has two sets of data bus lines for each 8-bit unit.For example, if there are 8 pairs of circuits, 1
Call registration button 1 for 8 bins of 8 pits in a group. The answer lamp 2I circuits are connected one circuit at a time to the other set of eight pins in 8-bit units. In the circuit configuration connected in this way, when the call registration button 11 is pressed, the signal is input to the microcomputer system 6.7.8 via the input buffer 3.1 PIA5, processed by the microcomputer, and then sent via the PIA5. The signal is output to the output buffer 4I, and the response lamp 21 is turned on.

However, in Figures 1 and 2, the signal transmission is
A for the pair of call registration devices in FIG.

It requires 82 signal lines and takes a lot of time to install. Here, the signal lines A and B are connected to the call registration button 1, for example.
．． If ~1n is a hall call registration button, it becomes a connection line from the hall call registration button attached to each floor to the elevator machine room.

The present invention has been made in view of the above, and its purpose is to connect one call registration button and its response light to an elevator-machine room control device with one signal line. It is an object of the present invention to provide an elevator call registration device that can perform processing using the following methods and can reduce the number of wiring lines.

A feature of the present invention is that an answering light is connected to the positive line of a power source, a call registration button paired with the answering light is connected between the negative line side of the answering light and the ground, and the negative line side is connected to the elevator machine. A conversion device that converts the press of the call registration button provided in the room into an electrical signal, and a lighting device that lights the response light in response to the registration of the press of the call registration button. connection, and when the call registration button is pressed, a drop in the potential on the negative line side is used as a signal that the call registration button has been pressed.

The present invention will be explained in detail below using the embodiments shown in FIGS. 3 and 4.

FIG. 3 is a block diagram showing one embodiment of the call registration device of the present invention, and shows the one on the 1st to nth floors as an example.

In FIG. 3, 211-21n are resistors connected to the power supply line 2, 221-22. are each resistor 211
~21. a response light consisting of a light emitting diode connected to the
31 to 23n are light emitting diodes 22. A call registration button (an in-car rental call registration button or a hall call registration button) connected between the e-line side of ~22ゎ and the ground is paired with light emitting diodes 221 to 22n, respectively. 241
~2411 is a diode, 251~25n is input cover 7
7.26. -261 are output buffers, which are connected as shown.

FIG. 4 is a circuit diagram showing an embodiment of the details of the first floor portion of FIG. 3. The same parts as in FIG. 3 are indicated by the same reference numerals with a suffix i, and their explanation will be omitted here. In FIG. 4, 27 is a PIA, 28 is an MPU, 29 is a ROM, and 30 is a RAM. Inner cover sofa 25+ has resistor 251~
253, a converter 254, and a signal transmission buffer 255. The converter 254 has the same function as the converter 31 in FIG. The signal transmission buffer 255 is the same as the signal transmission buffer 32 in FIG. 2. Output buffer 26. Like the output buffer 41 in FIG. 2, it is composed of a gate signal buffer 262 that applies an electric signal to the gate of the 5CR 261 using signals from the 5CR 261 and the PIA 27.

Next, the operation will be explained. When the call registration button 23° is not pressed, the resistor 21. The current from diode 24. and SCR,2
61 is also off because there is no gate signal, and the light emitting diode 22.61 is also turned off. No current flows through the light emitting diode 22. does not light up. On the other hand, current flows from the current connected to resistor 251 through resistors 251, 252, and 253, and the voltage is divided between resistors 252 and 253, and the resulting voltage is applied to converter 254. . Therefore, converter 25
4 becomes 0 level, and the signal transmission buffer 256
has no input. Here, when the call registration button 231 is pressed, the resistor 21. A current flows through the light emitting diode 22+, and the light emitting diode 22+ lights up. At this time,
At the same time, the current flowing through the resistors 252 and 253 through the resistor 251 is transferred to the diode 241 with low impedance.
Call registration button 23. The voltage applied to the converter 254 becomes zero, and the output of the converter 254 becomes a signal level, sending a signal to the sofa 256 and transmitting the signal to the microcomputer systems 28 and 2 via the PIA 27.
A signal is input at 9.30. The signal is stored in the microcomputer, and at the same time, an output signal is output from the microcomputer, and the signal is given to the sofa 262 (for the gate signal of the output buffer 261) via the PIA 27, and the gate signal buffer 262 is sent to the SCR, 261. Send a signal to the gate of 5C
R261 is turned on, and at this time, the call registration button 23. Even if the resistor 211 and the light emitting diode 22 are turned off,
Current flows to 2.5CR261.

A light emitting diode 22 which is a response light. will remain lit to display call registration.

By the above operation, the call registration button 23. The push signal is taken into the microcomputer and a light emitting diode 22. which is a response light is used. can be lit. Moreover, as shown in FIG. 4, X,,Y.

Only one signal line is required to connect the
/2. For resetting, a control circuit (not shown) issues a reset signal when the elevator arrives at the i floor, so that the 5CR261 may be turned off and reset.

In the embodiment described above, the light emitting diodes 221 to 226 are used as response lamps, but they may also be replaced by ordinary tungsten lamps, in which case the diodes 24.
~24 I am no longer needed.

As explained above, according to the present invention, one call registration button, its response light, and the control device of the elevator/machine room can be connected and processed by one signal line. This has the effect of reducing the number of signal lines by half.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of a conventional elevator call registration device, Fig. 2 is a circuit diagram showing details of the first floor portion of Fig. 1,
FIG. 3 is a block diagram showing an embodiment of the elevator call registration device of the present invention, and FIG. 4 is a circuit diagram showing a detailed embodiment of the i-th floor portion of FIG. 3.

Claims (1)

[Scope of Claims] 1. Elevator - in-car rental call registration button and its response light, hall call registration button and its response light, and converting the fact that one of the call registration buttons is pressed into an electrical signal. and a lighting device that turns on the corresponding response light when the press of the call registration button is registered, and the response light is connected to the The conversion device is connected to a line, and the call registration button that is paired with the answering light is connected between the negative line side of each of the answering lights and the ground, and the negative line side is provided in the elevator-machine room, and the conversion device and the lighting. An elevator characterized in that the elevator is connected to a device, and when the call registration button is pressed, a drop in the potential on the negative line side is used as a signal that the call registration button has been pressed. Call registration device. 2. The elevator according to claim 1, wherein the conversion device includes a voltage dividing resistor that divides the voltage from the positive line of a separately provided power source at the input stage and supplies the divided voltage to the converter.
call registration device. 13. The elevator call registration device according to claim 1 or 2, wherein the response light is made of a light emitting diode, and the conversion device has a diode connected to an input terminal to block input current.