KR940001786B1 - Voltage control system - Google Patents

Abstract

The device includes a sensor (30) for detecting the object, a timer (40) for having a condenser (C1) and a resistor on for a specfied time, a first control part (50) for includuing an EPROM (10), transistor (Q2), an OP-AMP (OP), gates (11,12) and a saw-tooth driving unit (13) by driving the high level at the sawtooth wave, a second control part (60) for including a transistor (Q3), a photocoupler (PC1) and a triac (TR) with supplying the AC power supply by the 1st control part (50) output, a terminal (71) for receiving the AC power by the 2nd control part (60), a terminal (72) for receiving the AC power, and a function select switch (70) for connecting the driver of the AC power supply through the terminal (72).

Description

Power Control System

1 is a block diagram of the present invention.

Figure 2 is a lightning rod of the present invention.

The present invention relates to a power control system of the present invention, and to a power control system for reducing power consumption by providing power only for a predetermined time when a certain object passes.

In general, when operating the equipment by using a power supply (power supply), the power is supplied by inserting into the power outlet by using a plug, the equipment is operated by turning on the power switch. At this time, in the case of a device driven by the power of the motor (for example, a press, a conveyor, an escalator), an object to be used (such as presses, conveyors, and escalators) may be continuously provided. In the case of irregular supply, the electric power is increased due to the continuous operation of the motor.

The present invention is to provide a system that can reduce such electricity consumption, characterized in that the power is provided for a set time by a timer having a sensor and is turned on for a set time for each operation of the sensor.

That is, the sensor for detecting whether the object passes; A timer that is turned on for a set time every time the sensor is operated; A first control unit which provides an output when the timer is on, cogs and a high level when it is generated; A second controller to supply power according to the output of the first controller; And a function selection switch for selecting AC power to be provided to the driving unit directly or through the second control unit.

When described in detail with reference to the drawings as follows.

FIG. 1 is a block diagram of the present invention, in which the AC power supply 21 is rectified from the DC power supply unit 20 into a direct current, and the sensor 30, the timer 40, the first control unit 50, and the second control unit 60 are connected to each other. Supply DC power to. The function selection switch 70 selects a function of providing the AC power source 21 to the driving unit 80. The terminal 71 receiving the AC power source 21 through the second control unit 60 and the AC power source are provided. Select the terminal 72 directly provided by the.

2 is a circuit diagram of the present invention, the DC power supply unit 20 is provided to the DC power supply through the rectifier 22 and the regulator 23 and the capacitors C0 and C01 through the transformer T1 through the AC power source 21. . As the sensor 30 of the present invention, an infrared sensor or a beam sensor may be used. The timer 40 of the present invention provides a bias to the transistor Q1 and functions as a timer (R1 and R2 and a capacitor C1), and resistors R3 and R4 and Zener coupled to the output terminal of the transistor Q1. It consists of a diode D1.

The first control unit 50 of the present invention has a resistance (R7, R8) by the output of the pyramid (10) for outputting a constant level at the potential of the zener diode (D1) and the one output (D2) of the pyro 10 (10). And a transistor Q2 receiving the bias from the diode D2, the output of the transistor Q2 is provided to the inverting terminal, and the output of the sawtooth wave generator 13 to the non-inverting terminal, respectively, to the resistor R9 and the capacitor C2. An AND gate 11 and an AND gate 11 provided with a controlled OP amplifier QP, an OP amp output through the diode D3, and a level of another output terminal of the pyrom 10. It consists of a diode D4, a resistor R10 and a gate 12 for non-inverting the output. In this case, the resistors R5 and R6 are for biasing the inside of the pyromium 10. The sawtooth wave generator 13 shares the photocouplers PC2 and PC3 coupled to both ends of the AC power source 21 through the resistors R15 and R16 and the outputs of the photocouplers PC2 and PC3 in common to each other. And a transistor Q4, which is biased, and a resistor R18 and a capacitor C3 that differentiate the output of the biased transistor Q4 to generate a triangular wave. The resistor R19 is for protecting the transistor Q4.

In the present invention, the second controller 60 receives the transistor Q3, which is biased from the output of the first controller 50 through the resistor R11, and receives the + power of the DC power source 20 from the output terminal of the transistor Q3. The photocoupler PC1 to be driven and the triac TR driven through the bridge portion 61 made of diodes D5 to D8 in accordance with the operation of the photocoupler PC1. The resistor R13 and the capacitor C3 are for driving the gate, the resistors R14 and R15 are for protecting the triac TR, and the coil L is for removing ripple.

In the present invention, the function selection switch 70 is directly connected to one terminal 71 connected to one end of the AC power supply 21 supplied through the triac TR of the second control unit 60 and one end of the AC power supply 21. The terminal 72 is selected, and the driving unit 80 receives one end of the AC power by the terminal selected by the function selecting unit 70 and the other end of the AC power 21 to be driven.

As an example, when the present invention configured as described above is applied to an escalator, when a person passes through an escalator (not shown) inlet, the sensor 30 is turned on to provide a bias to the base of the transistor Q1, thereby providing a transistor Q1. ) Is on. When transistor Q1 is turned on, its output stage is at a low level. However, since the transistor Q1 is turned off after a person passes, a set DC power supply (for example, 5 V) is supplied to the output terminal of the transistor Q1 so that only the set potential (for example, 2.4 V) of the zener diode D1 is avoided. Is provided in the ROM 10. In this case, since this pyrom is designed to provide a low level at one output terminal D2 and a high level at another output terminal D1, the transistor Q2 is biased by the low level of the one output terminal D2 so that the low level is increased. Although provided to the inverting end of the op amp OP, the sawtooth wave provided by the saw tooth generator 13 is provided to the non-inverting terminal so that the op amp output becomes high level. Therefore, the bias is provided to the transistor Q3 through the resistor R11 of the second controller 60 by maintaining the high level through the AND gate 11 and the gate 12. When the transistor Q3 is turned on, the photocoupler PC1 is turned on to drive the triac TR, which controls the AC power source 21 by the bridge portion 61, so that the AC power source 21 connects the terminal 71. It is provided to the drive unit 80 through.

Of course, the function selection switch 70 at this time is driven in the state connected with the terminal 71. If the function selection switch 70 is connected to the terminal 72, the driving unit 80 continues to be driven, thereby increasing the electricity consumption. On the other hand, after the sensor 30 is driven, the capacitor C1 starts to charge, and the charging time at this time is determined by the time constants of the values of the resistors R1, R2, and C1, thereby varying the resistance R1. In this case, since the DC power is not supplied to the pyrom 10 through the zener diode D1, the driving unit 80 operates only for a set time. This setting time is determined by the time from the person passing the escalator entrance to the escalator exit, of course, can be set differently depending on the situation. In addition, when a person rides on the escalator first and then another person rides again before passing through the exit, the capacitor C1 is charged again because the capacitor C1 is instantaneously discharged through the resistor R2 and the transistor Q1 collector. By doing so, it is operated based on the secondary burner regardless of the primary burner. Therefore, when goods are supplied intermittently from the outside of the conveyor, the conveyor operates only as long as possible to move to the desired position every time, thereby saving electricity consumption.

As described above, the present invention can be used to reduce electricity consumption in an intermittent escalator or a conveyor, and can be used continuously as necessary, and the operating time can be selectively adjusted according to necessity.

Claims (1)

A sensor 30 for detecting whether an object has passed; A timer 40 including a condenser C1 and a resistance to be turned on for a set time during the operation of the sensor 30; An output including the output when the timer 40 is turned on, and a high level when the sawtooth wave is generated, the op amp 10 transistor (Q2), the op amp (OP), the gates (11, 12) and the sawtooth generator 13 1 controller 50; A second controller 60 including a transistor Q3, a photocoupler PC1, and a triac TR to supply AC power according to the output of the first controller 50; A function of selecting a terminal 71 receiving AC power through the second control unit 60 and a terminal 72 directly provided from one end of the AC power 21 so that the selected AC power is provided to the driving unit 80. Power switch control system characterized in that the selection switch 70 is turned on for a set time only when the object passes through the sensor unit.