CN102130673B - Power-saving control device - Google Patents

Abstract

The invention provides a power-saving control device, which includes an infrared photoelectric detection circuit, a time counter, a time division signal generation circuit, a feedback control signal generation circuit, a protection time setting and time comparison circuit, a setting time display circuit, and a power output Control unit and AC contactor drive circuit; characterized in that: the infrared photoelectric detection circuit receives the infrared signal output by the infrared emitter, and outputs the level signal to the time counter after processing; the time counter receives the infrared signal output by the infrared photoelectric detection circuit The level signal and the standard pulse signal output by the time-divided signal generation circuit are counted, and the counted pulse is output to the protection time setting and time comparison circuit; the present invention monitors the power environment, and once it detects that someone is active, Immediately supply power to the electricity environment. When people leave the electricity environment for a certain period of time, the power will be automatically turned off. It can be used in homes, institutions, schools, industrial control, automatic lighting control and other places.

Description

A power saving control device

technical field

The invention relates to the field of power control, in particular to a power saving control device.

technical background

Most of the shutdown of the existing power supply system adopts manual control. When people arrive at the power consumption environment, they manually turn on the power supply, and when they leave the power consumption environment, they manually turn off the power supply. Electrical equipment, and even cause a fire, resulting in great economic losses.

Contents of the invention

The technical problem to be solved by the present invention is to provide a power saving control device.

In order to solve the above technical problems, the technical solution of the present invention is a power-saving control device, including an infrared photoelectric detection circuit, a time counter, a time-division signal generation circuit, a feedback control signal generation circuit, protection time setting and time comparison Circuit, set time display circuit, power output control unit and AC contactor drive circuit; characterized in that:

The infrared photoelectric detection circuit receives the infrared signal output by the infrared transmitter, and outputs the level signal to the time counter after processing;

The time counter receives the level signal output by the infrared photoelectric detection circuit and the standard pulse signal output by the time-division signal generation circuit, counts, and outputs the count pulse to the protection time setting and time comparison circuit;

Time-division signal generation circuit: receive the reset signal output by the feedback control signal generation circuit, generate a standard pulse signal and output it to the time counter;

Protection time setting and time comparison circuit: set the protection time, and output the set time to the set time display circuit; at the same time, the protection time setting and time comparison circuit receives the counting pulse output by the time counter, and Compare the counting pulse with the set protection time, when the set protection time is reached, output the control signal to the feedback control signal generation circuit and the AC contactor drive circuit;

Set time display circuit: receive the set time signal output by the protection time setting and time comparison circuit, decode the set time signal and display the set time;

Feedback control signal generation circuit: receive the control signal output by the protection time setting and time comparison circuit, and output the reset signal to the time-division signal generation circuit;

AC contactor drive circuit: receive the control signal output by the protection time setting and time comparison circuit, and output the drive signal to the power output control unit;

The power output control unit receives the drive signal output by the AC contactor drive circuit, and controls the opening and closing of the power supply system.

The invention monitors whether there are people in the power consumption environment through an infrared photoelectric detection circuit, and counts the time when people leave the power consumption environment through a time counter, and sets the protection time for people leaving the power consumption environment through the protection time setting and the time comparison circuit. Time, the signal output by the feedback control signal generating circuit is used to control the working state of the time-dividing signal generating circuit 3, and control the opening and closing of the power supply system through the power output control unit.

According to a preferred solution of a power-saving control device described in the present invention, the time counter is composed of synchronous decade counters U2, U3 and an inverter U8A, wherein the control terminals ENP, ENT of the synchronous decade counter U2 , the setting terminal LOAD terminal and the control terminal ENP, ENT of the synchronous decade counter U3, and the setting terminal LOAD terminal are connected to the power supply at the same time, the asynchronous clearing terminal MR terminal of the synchronous decade counter U2 and the asynchronous clearing terminal MR terminal of the synchronous decade counter U3 Connect the output terminal of the infrared photoelectric detection circuit at the same time, the clock pulse input terminal CLK of the synchronous decade counter U2 is connected to the output terminal of the time-divided signal generation circuit, the carry output terminal RCO of the synchronous decade counter U2 is connected to the input terminal of the inverter U8A, and reverse The output terminal of the commutator U8A is connected to the clock pulse input terminal CLK of the synchronous decade counter U3, and the output terminals Q0, Q1, Q2, and Q3 of the synchronous decade counter U3 are connected to the protection time setting and time comparison circuit.

According to a preferred solution of a power-saving control device according to the present invention, the protection time setting and time comparison circuit includes a dial switch SW, an encoder U7, an inverter U8B, U8C, U8D, U8E, U8F and a two-digit decimal number comparator U6, wherein the encoding input terminal of the encoder U7 is connected to the dial switch SW, and the encoding output terminals Q0-Q3 of the encoder U7 are respectively connected to the inputs of the inverters U8B, U8C, U8D, and U8E The output terminals of the inverters U8B, U8C, U8D, and U8E are respectively connected to the comparison input terminals B0~B3 of the two-digit decimal number comparator U6, and the comparison input terminals A0~A3 of the two-digit decimal number comparator U6 are respectively connected to the synchronous The output terminals Q0, Q1, Q2, Q3 of the decimal counter U3, the output terminal QA>B of the two-digit decimal number comparator U6 are connected to the input terminal of the inverter U8F, and the output terminal of the inverter U8F is connected to the feedback control signal generating circuit.

According to a preferred solution of a power-saving control device in the present invention, the feedback control signal generating circuit includes a comparator U4B, switching tubes Q2, Q1; wherein, the emitter of the switching tube Q2 and the set of the switching tube Q1 The electrodes are connected to the time-divided signal generation circuit, the positive input terminal of the comparator U4B is connected to the output terminal of the inverter U8F, the negative input terminal of the comparator U4B is connected to the connection node of the resistor R8 and the resistor R9, and one end of the resistor R8 is connected to the power supply. One end of the resistor R9 is grounded.

The beneficial effects of the power-saving control device of the present invention are: the present invention monitors whether there are people in the electricity-using environment, and once it detects that someone is active, it immediately supplies power to the electricity-consuming environment for users to use; After the power environment exceeds a certain period of time, the power will be automatically turned off, and the time for controlling the power off can be set and displayed by the user, and has the advantages of power saving, automatic intelligent control of the power supply, safety and reliability, and can be used for home control of household appliances. It is used in government agencies, schools, industrial cluster control, automatic lighting control and other places, and has great economic and social benefits.

Description of drawings

Fig. 1 is a functional block diagram of a power-saving control device according to the present invention.

2 is a schematic diagram of the infrared photoelectric detection circuit 1, the time counter 2, the time division signal generation circuit 3, the feedback control signal generation circuit 4, the power output control unit 7 and the AC contactor drive circuit 8 according to the present invention.

FIG. 3 is a schematic diagram of the protection time setting and time comparison circuit 5 and the setting time display circuit 6 .

Detailed ways

Referring to Fig. 1, a kind of power-saving control device is composed of infrared photoelectric detection circuit 1, time counter 2, time division signal generation circuit 3, feedback control signal generation circuit 4, protection time setting and time comparison circuit 5, setting The time display circuit 6, the power supply output control unit 7 and the AC contactor driving circuit 8 are composed, wherein, the input end of the infrared photoelectric detection circuit 1 is connected to the infrared emitter, and the output end of the infrared photoelectric detection circuit 1 is connected to the asynchronous The clearing end, the clock pulse input end of the time counter 2 is connected to the output end of the time-division signal generation circuit 3, the reset end of the time-division signal generation circuit 3 is connected to the output end of the feedback control signal generation circuit 4, and the time counter 2 The output end of the protection time setting and comparison input end of the time comparison circuit 5 is connected, and one of the output ends of the protection time setting and time comparison circuit 5 is connected to the comparison input end of the feedback control signal generation circuit 4 and the AC contactor drive circuit 8 The input end of the protection time setting and the other output end of the time comparison circuit 5 are connected to the input end of the set time display circuit 6, and the set time display circuit 6 decodes the set time signal and displays it; the AC contactor drive The output end of the circuit 8 is connected to the input end of the power output control unit 7, and the power output control unit 7 controls the opening and closing of the power supply system; wherein:

The infrared photoelectric detection circuit 1 receives the infrared signal output by the infrared transmitter, and outputs the level signal to the time counter 2 after processing;

The time counter 2 receives the level signal output by the infrared photoelectric detection circuit 1 and the standard pulse signal output by the time-division signal generation circuit 3, counts, and outputs the count pulse to the protection time setting and time comparison circuit 5;

Time division signal generating circuit 3: receiving the reset signal output by the feedback control signal generating circuit 4, generating a standard pulse signal and outputting it to the time counter 2;

Protection time setting and time comparison circuit 5: set the protection time, and output the set time to the setting time display circuit 6; at the same time, the protection time setting and time comparison circuit 5 receives the record output by the time counter 2 Count the pulses, and compare the counted pulses with the set protection time, when the set protection time is reached, output the control signal to the feedback control signal generation circuit 4 and the AC contactor drive circuit 8;

Set time display circuit 6: receive the set time signal output by the protection time setting and time comparison circuit 5, and display the set time after decoding;

Feedback control signal generation circuit 4: receiving the protection time setting and the control signal output by the time comparison circuit 5, and outputting the reset signal to the time division signal generation circuit 3;

AC contactor driving circuit 8: receiving the protection time setting and the control signal output by the time comparison circuit 5, and outputting the driving signal to the power output control unit 7;

The power output control unit 7 receives the drive signal output by the AC contactor drive circuit 8, and controls the opening and closing of the power supply system.

2 and 3, the infrared photoelectric detection circuit 1 is composed of resistors R3, R4, R5, R6, infrared transmitting and receiving tube IRL1, and a comparator U4A. Someone in the environment outputs a low-level signal to clear the synchronous decade counters U2 and U3;

Described time counter 2 is made up of synchronous decade counter U2, U3 and inverter U8A, wherein, the control end ENP, ENT of synchronous decade counter U2, the setting terminal LOAD end and the control terminal ENP, ENT of synchronous decade counter U3 , The setting terminal LOAD is connected to the power supply at the same time, the asynchronous clearing terminal MR terminal of the synchronous decade counter U2 and the asynchronous clearing terminal MR terminal of the synchronous decade counter U3 are connected to the output terminal of the infrared photoelectric detection circuit 1 at the same time, and the clock pulse of the synchronous decade counter U2 The input terminal CLK is connected to the output terminal of the time-division signal generating circuit 3, the carry output terminal RCO of the synchronous decade counter U2 is connected to the input terminal of the inverter U8A, and the output terminal of the inverter U8A is connected to the clock pulse input terminal of the synchronous decade counter U3 CLK, the output terminal Q0, Q1, Q2, Q3 end of synchronous decimal counter U3 connects protection time setting and time comparison circuit 5; Its effect of described time counter 2 is to time the time when people leave the power consumption environment;

Described protection time setting and time comparison circuit 5 comprise dial switch SW, scrambler U7, inverter U8B, U8C, U8D, U8E, U8F and two-digit decimal number comparator U6, wherein, the coding input of scrambler U7 connected to the DIP switch SW, the coding output terminals Q0~Q3 of the encoder U7 are respectively connected to the input terminals of the inverters U8B, U8C, U8D, and U8E, and the output terminals of the inverters U8B, U8C, U8D, and U8E are respectively connected to To the comparison input terminals B0-B3 of the two-digit decimal comparator U6, the comparison input terminals A0-A3 of the two-digit decimal comparator U6 are respectively connected to the output terminals Q0, Q1, Q2, and Q3 of the synchronous decimal counter U3, and the two-digit decimal The output terminal QA>B of the digital comparator U6 is connected to the input terminal of the inverter U8F, and the output terminal of the inverter U8F is connected to the feedback control signal generating circuit 4 .

The feedback control signal generating circuit 4 includes a comparator U4B, switching tubes Q2, Q1; wherein, the emitter of the switching tube Q2 and the collector of the switching tube Q1 are connected to the time-divided signal generating circuit 3, and the forward input terminal of the comparator U4B The output end of the inverter U8F is connected, the inverting input end of the comparator U4B is connected to the connection node of the resistor R8 and the resistor R9, one end of the resistor R8 is connected to the power supply, and one end of the resistor R9 is grounded. The signal output by the feedback control signal generation circuit 4 is used to control the working state of the time-divided signal generation circuit 3. When there are people in the power environment, the signal output by the feedback control signal generation circuit 4 is high level, and the signal generator U1 works; When there is no one in the electricity environment, the time counter 2 starts counting to determine the time when the person leaves the electricity environment. If the specified time is exceeded, the signal output by the feedback control signal generating circuit 4 is at a low level, and the signal generator U1 stops working. ;

The AC contactor drive circuit 8 is composed of resistor R10, transistors Q3, Q4, AC contactor RL2 and diode D1, and its function is to provide switch contacts to the power output control unit 7, which can meet the requirements of large output current and control system power supply and AC power supply. isolation requirements.

The working principle of the present invention is:

When people are active in the power environment, the infrared photoelectric detection circuit 1 detects the presence of people, and the comparator U4A outputs a low-level signal to clear the synchronous decimal counters U2 and U3, and the output terminal QA>B of the two-digit decimal number comparator U6 is Low level, the feedback control signal generation circuit 4 outputs a high level open circuit signal, the signal generator U1 works, and outputs the minute clock pulse to the synchronous decade counter U2, and the time counting is in a waiting state; the AC contactor drive circuit 8 outputs a high level, The AC contactor RL1 acts to connect the power supply.

When there is no human activity in the power consumption environment, the infrared photoelectric detection circuit 1 cannot detect the human presence, the comparator U4A outputs a high-level signal, and the synchronous decimal counters U2 and U3 work. When the state value of the time counter is greater than or equal to the set time value, the output terminal QA>B of the two-digit decimal number comparator U6 is high level, the feedback control signal generation circuit 4 outputs a low level short-circuit signal, and the signal generator U1 stops work, the AC contactor driving circuit 8 outputs a low level, the AC contactor RL1 loses power, and cuts off the power supply. The state of the time counter cannot be changed until there are people in the power environment, so when there is no one in the power environment, the power supply is always in a cut-off state.

Claims (4)

1. an electricity-saving control device comprises that infrared electro testing circuit (1), time register (2), branch time signal generating circuit (3), feedback control signal produce circuit (4), guard time is set and time comparison circuit (5), setting-up time display circuit (6), power supply output control unit (7) and A.C. contactor drive circuit (8); It is characterized in that:

Infrared electro testing circuit (1) receives the infrared signal of infrared transmitter output, handles the back outputs level signals to time register (2);

The level signal of time register (2) reception infrared electro testing circuit (1) output and the calibration pulse signal that divides time signal generating circuit (3) output count, and the pulse that will count outputs to guard time setting and time comparison circuit (5);

Divide time signal generating circuit (3): receive the reset signal that feedback control signal produces circuit (4) output, produce the calibration pulse signal and output to time register (2);

Guard time is set and time comparison circuit (5): carry out guard time and set, and setting-up time is outputed to setting-up time display circuit (6); Simultaneously; The numeration pulse that guard time is set and time comparison circuit (5) time of reception register (2) is exported; And the guard time of will count pulse and setting compares; When reaching the guard time of setting, output a control signal to feedback control signal and produce circuit (4) and A.C. contactor drive circuit (8);

Setting-up time display circuit (6): receive the setting-up time signal that guard time is set and time comparison circuit (5) is exported, decipher the back display setting time;

Feedback control signal produces circuit (4): receive the control signal that guard time is set and time comparison circuit (5) is exported, the output reset signal is to dividing time signal generating circuit (3);

A.C. contactor drive circuit (8): receive the control signal that guard time is set and time comparison circuit (5) is exported, output drive signal is to power supply output control unit (7);

Power supply output control unit (7) receives the drive signal of A.C. contactor drive circuit (8) output, the separating brake and the combined floodgate of control dynamic power system.

2. a kind of electricity-saving control device according to claim 1; It is characterized in that: said time register (2) is made up of synchronous decimal counter U2, U3 and reverser U8A; Wherein, The control end ENP of the control end ENP of synchronous decimal counter U2, ENT, set end LOAD end and synchronous decimal counter U3, ENT, set end LOAD end are connected power supply simultaneously; The asynchronous resetting end MR end of synchronous decimal counter U2 and the asynchronous resetting end MR end of synchronous decimal counter U3 are connected the output of infrared electro testing circuit (1) simultaneously; The clock pulse input terminal CLK of synchronous decimal counter U2 connects the output that divides time signal generating circuit (3); The carry output RCO end of synchronous decimal counter U2 connects the input of reverser U8A; The output of reverser U8A connects the clock pulse input terminal CLK of synchronous decimal counter U3, and the output Q0 of synchronous decimal counter U3, Q1, Q2, Q3 end connect guard time and set and time comparison circuit (5).

3. a kind of electricity-saving control device according to claim 2; It is characterized in that: said guard time is set and time comparison circuit (5) comprises toggle switch SW, encoder U7, reverser U8B, U8C, U8D, U8E, U8F and two decimal number comparator U6; Wherein, The coding input of encoder U7 is connected to toggle switch SW; Coding output Q0～Q3 of encoder U7 is connected respectively to the input of reverser U8B, U8C, U8D, U8E; The output of reverser U8B, U8C, U8D, U8E is connected respectively to comparison input B0～B3 of two decimal number comparator U6; Comparison input A0～A3 of two decimal number comparator U6 connects output Q0, Q1, Q2, the Q3 of synchronous decimal counter U3 respectively, and the output QA of two decimal number comparator U6＞B connects the input of reverser U8F, and the output of reverser U8F connects feedback control signal and produces circuit (4).

4. a kind of electricity-saving control device according to claim 3 is characterized in that: said feedback control signal produces circuit (4) and comprises comparator U4B, switching tube Q2, Q1; Wherein, The collector electrode of the emitter of switching tube Q2 and switching tube Q1 is connected branch time signal generating circuit (3); The positive input of comparator U4B connects the output of reverser U8F; The reverse input end of comparator U4B connects the connected node of resistance R 8 and resistance R 9, a termination power of resistance R 8, an end ground connection of resistance R 9.

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