JPH07102944B2 - Elevator call registration device - Google Patents

Description

The present invention relates to an elevator call registration device, and is particularly suitable for reducing the number of wires between a call registration button and its response light and an elevator machine room. The present invention relates to a call registration device.

[Prior Art] Conventionally, in this type of device, two signal lines are required for signal transmission between one call registration button and its response light and the control device in the machine room, and wiring of an elevator installation character is required. The work was complicated. So, for example, Japanese Patent Publication No. Sho 61-22672
In the gazette, a signal line is taken out from the middle part of the call button and the call registration lamp connected in series and guided to the machine room. The call detection circuit and the call registration based on the call signal from this call detection circuit are registered in this signal line. Connect to the drive circuit that drives the lamp,
A call signal converter for an elevator has been disclosed in which the number of wires is reduced by sharing a signal of a call button and a signal of a call registration lamp with a signal line.

[Problems to be solved by the invention]

According to the above-mentioned conventional technique, only one signal line is required for the signal of the call button and the signal of the call registration light, and the number of wires connecting the hall and the car room to the machine room can be reduced, and the construction cost can be reduced. Since the call detection circuit uses a photocoupler and the driving circuit that drives the registration light uses a thyristor, DC power supplies must be provided in the hall, in the car, and in the machine room. In addition to the high facility cost, a large storage room for storing the power supply device is required. Further, since the detection of the signal of the call button of the call detection circuit is based on the presence or absence of light emission of the light emitting diode due to the high or low of the signal potential of the call button by the operation of the call button, it is easily affected by the contact failure of the call button, There is a problem that the stability of the call detection operation is poor. Furthermore, because the power is separated by the light emitting diode and the phototransistor in the call detection circuit by the photocoupler,
The circuit configuration of the call detection circuit becomes complicated.

The present invention has been made in view of the above circumstances, and it is an object of the present invention to reduce the facility cost of a call detection circuit or a response light power supply circuit by directly using a commercial power supply as a power supply device. An object of the present invention is to provide a call registration device for an elevator having a simple circuit configuration with excellent stability in call detection operation.

[Means for solving problems]

In order to achieve the above object, the present invention provides a light-emitting element that functions as a response lamp connected between an AC power supply and a ground potential.
A series circuit including a rectifying element that is the same as or different from the light emitting element and a lighting circuit that lights a response lamp, a parallel circuit including a rectifying element and a registration button, and a polarity of a potential on the ground potential side of the rectifying element that is positive or negative. And a call detection circuit that outputs a detection signal that detects the depression of the registration button by determining that the registration button is pressed. Preferably, the call detection circuit is a ground potential side of the rectifying element and a ground. The lighting circuit has a comparison circuit for comparing with a potential, and the lighting circuit has a thyristor driven by a registered call or the like.

[Action]

With such a configuration, in the present invention, when the registration button is not pressed, the voltage applied by the AC power supply is blocked by the rectifying element for half the wave, and only the voltage for the remaining half wave is generated. It is output to the ground potential side of the rectifying element. Therefore, in this case, the potential on the ground potential side of the rectifying element has either positive or negative polarity. On the other hand, when the registration button is pressed, the voltage applied by the AC power source is output to the ground potential side of the rectifying element via the contact of the registration button, so the potential on the ground potential side of the rectifying element is the polarity of the AC power source. Is output as it is, that is, both positive and negative polarities are output. Therefore, the call detection circuit outputs a detection signal for detecting the depression of the registration button by determining that the polarity of the ground potential side of the rectifying element is both positive and negative.

When the nominal detection circuit has a comparison circuit that compares the ground potential side of the rectifying element with the ground potential, the comparison circuit outputs the potential of the polarity blocked by the rectifying element to the ground potential side of the rectifying element. Occasionally, a detection signal for detecting the pressing of the registration button is output. When the lighting circuit has a thyristor, the lighting circuit is driven by a registered call or the like.

〔Example〕

The present invention will be described in detail below with reference to the embodiments shown in FIGS.

FIG. 1 is a block diagram showing an embodiment of the elevator call registration apparatus of the present invention, which illustrates the first to nth floors. In Figure 1, 1 is an AC power source, one is Yes grounded, the ungrounded side is connected the response lamp 2 ₁ to 2 _n.
3 _{1 to} 3 _n are diodes connected in series to the response lights 2 ₁ to 2 _n , 4 ₁ to 4 _n are call registration buttons connected in parallel with the diodes 3 _{1 to} 3 _n, and 5 _{1 to} 5 _n are The push button unit is composed of response lights 2 ₁ to 2 _n , diodes 3 _{1 to} 3 _n , and call registration buttons 4 ₁ to 4 _n . 6 _{1 to} 6 _n are input buffers (call detection circuits) and 7 _{1 to} 7 _n are output buffers (lighting circuits), which are connected as shown.

FIG. 2 is a circuit diagram showing an example of details of the i-th portion of FIG. 1, and the same portions as those of FIG. 1 are shown by adding the suffix suffix i to the same reference numerals and the description thereof is omitted here. In FIG. 2, reference numeral 8 denotes a peripheral that controls the input / output of the microcomputer.
Interface adapter (hereinafter referred to as PIA), 9,10,11
Are a central processing unit (hereinafter abbreviated as MPU) of a microcomputer, a read only memory (hereinafter abbreviated as ROM) that stores programs, and a random access memory (hereinafter abbreviated as RAM). Input buffer 6 _i is resistor 1
2, comparator 13, Zener diode 14, buffer for signal transmission
It is composed of 15 and more. The output buffer 7 _i is a thyristor (hereinafter abbreviated as SCR) 16 and R which are output signal elements for lighting the response lamp.
It is composed of a gate signal buffer 17 which gives an electric signal to the gate of the SCR 16 by a signal from the IA8.

The following operation will be described. When the call registration button 4 _i is not pressed, the SCR 16 has no gate signal, so it is turned off, and only a very small current flows to the response lamp 2 _i due to the high impedance resistor 12 in the input buffer 6 _i . No
Response light 2 _i does not light. On the other hand, the voltage of the AC power supply 1, the response lamp 2 _i by the diode 3 _i, the diode 3 _i, only the voltage of the half-wave fraction output becomes positive polarity of the AC power supply 1 to the input terminal of the comparator 13 through a resistor 12 Is applied. On the other hand, the comparator
Since the input terminal of 13 is grounded, while the voltage is being applied to the input terminal of the comparator 13, the output of the comparator 13 becomes zero level and the signal transmitting buffer 15 has no input. When the call registration button 4 _i is pressed here, the voltage of the AC power supply 1 is a positive half wave voltage to the input terminal of the comparator 13 through the response communication 2 _i , the call registration button 4 _i and the resistor 12. Not only is the voltage of both polarities of the half-wave voltage having the negative positive polarity applied. Here, while the voltage for half wave of the AC power supply 1 is applied to the input terminal of the comparator 13, the comparator 13
Becomes a high-level voltage determined by the zener voltage of the zener diode 14, a voltage with a signal is applied to the signal transmitting buffer 15, and the signal is input to the microcomputer systems 9, 10, 11 via the PIA8. The signal is stored in the microcomputer, and at the same time, an output signal for lighting the response lamp 2 _i is output from the microcomputer, and the signal is given to the gate signal buffer 17 of the output buffer 7 _i via the PIA8 and gated. The signal buffer 17 sends a signal to the gate of the SCR16,
Is turned on, a half-wave current of the AC power supply 1 flows to the response lamp 2 _i , the diode 3 _i , and the SCR16, and the response lamp 2 _i lights up.
View call registrations. The reset is performed by a control circuit (not shown) which turns off the SCR 16 by a reset signal generated when the elevator reaches the i-th floor.

By the above operation, the signal indicating that the call registration button 4 _i has been pressed can be taken into the microcomputer and the response lamp 2 _i can be turned on. Moreover, as shown in FIG. 2, only one signal line may be used to connect Y _i and Z _i , and one power line may be used.
Since the push button unit 5 _i can be provided at two positions, X _i and Y _i , the Japanese Patent Laid-Open No. Sho 58-58
Compared to the one disclosed in Japanese Patent No. 59175, the ground line is not required, and the number of connection points of the push button unit 5 _i can be reduced to 2/3. Furthermore, when the non-stop floor is provided, the response light on the non-stop floor can be called only by processing inside the microcomputer so as to prevent the operation of the lighting device by the signal set on the non-stop floor. Even if the registration button is pressed, it does not light up, and it is no longer necessary to change the hardware as in the conventionally proposed device.

Figure 3 is responsive lamp 2 ₁ to 2 _n in the push button Yunitsuto 5 ₁ to 5 _n of FIG. 1
2 is a circuit diagram showing an embodiment in which a light emitting diode is used instead of a normal tungsten lamp as described above. In FIG. 3, 18 is a push button unit, 19 and 20 are resistors, and 2
1 is a light emitting diode which is a response lamp, and 22 is a call registration button. In this case, since the light emitting diode 21 which is a response lamp also operates as a diode, the diodes 3 _{1 to} 3 _{n in} FIG.
Is unnecessary, and a resistor must be added instead.

〔The invention's effect〕

As described above, according to the present invention, a series circuit including a light emitting element that functions as a response lamp between an AC power supply and a ground potential, a rectifying element that is the same as or different from the light emitting element, and a lighting circuit that lights the light emitting element is provided. Connected to form a parallel circuit with the rectifying element and the call registration button, and detect the detection signal that detects the pressing of the registration button by determining that the polarity of the ground potential side of the rectifying element is both positive and negative. Since the output is made possible, by using the commercial power supply as it is, the equipment cost of the call detection circuit and the power supply circuit of the response lamp can be reduced, the stability of the call detection operation is excellent, and the circuit has a simple configuration. be able to.

[Brief description of drawings]

FIG. 1 is a block diagram showing an embodiment of an elevator call registration device of the present invention, FIG. 2 is a circuit diagram showing an embodiment of details of the i-th floor portion of FIG. 1, and FIG. FIG. 9 is a circuit diagram showing another embodiment of the push button unit shown in the figure. 1 ... AC power supply, 2 _{1 to} 2 _n ...... Response lamp, 3 _{1 to} 3 _n ...... Diode, 4 ₁ to 4 _n ...... Call registration button, 5 _{1 to} 5 _n ...... Push button unit, 6 _{1 to} 6 _n …… Input buffer, 7 _{1 to} 7 _n …… Output buffer, 8 …… PIA, 9 …… MPU, 10 …… ROM, 11 …… RAM, 12
…… Resistor, 13 …… Comparator, 14 …… Zener diode, 15 …… Signal transmission buffer, 16 …… SCR, 17 …… Gate signal buffer, 19,20 …… Resistor, 21 …… Light emission Diode, 22 ... Call registration button.

Claims (4)

[Claims] 1. An elevator call registration device configured to register a call based on a detection signal detected by pressing down an elevator call registration button and turn on a response lamp corresponding to the registered call. A series circuit including a light emitting element functioning as the response lamp connected between an AC power supply and a ground potential, a rectifying element that is the same as or different from the light emitting element, and a lighting circuit that lights the light emitting element, and the rectifying element And a parallel circuit composed of the call registration button, and a call that outputs a detection signal that detects pressing of the registration button by determining whether the polarity of the ground potential side of the rectifying element is positive or negative. A call registration device for an elevator, comprising a detection circuit. 2. The elevator call registration device according to claim 1, wherein the call detection circuit has a comparison circuit for comparing the ground potential side potential of the rectifying element with the ground potential. 3. The elevator call registration device according to claim 1, wherein the lighting circuit has a thyristor driven by a registered call or the like. 4. The elevator call registration device according to claim 1, wherein the rectifying element is the same light emitting diode as the light emitting element.