CN111787661A - Low-power consumption single live wire electronic control switch circuit - Google Patents
Low-power consumption single live wire electronic control switch circuit Download PDFInfo
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- CN111787661A CN111787661A CN202010595485.9A CN202010595485A CN111787661A CN 111787661 A CN111787661 A CN 111787661A CN 202010595485 A CN202010595485 A CN 202010595485A CN 111787661 A CN111787661 A CN 111787661A
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
- H05B45/345—Current stabilisation; Maintaining constant current
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/10—Controlling the intensity of the light
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/30—Driver circuits
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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Abstract
The invention discloses a micro-power consumption single-live-wire electronic control switch circuit, which comprises a rectifying circuit, a trigger switch circuit, a linear constant current circuit, a first switch circuit, a second switch circuit, an energy storage circuit, a linear voltage stabilizing circuit and a sensor circuit, wherein the sensor circuit is used for sensing whether a person exists in a detection area or whether a lighting control operation or a light-off control operation exists, outputting a lighting control signal when the person exists or the lighting control operation exists, outputting a light-off control signal when the person does not detect a human body or the light-off control operation exists in a preset time period, and controlling the on-off of the first switch circuit, the second switch circuit and the trigger switch circuit according to the detection result of the sensor circuit to realize the charging of the energy storage circuit and ensure the normal continuous work of the sensor circuit; the on-off switch has the advantages that the on-off function is realized by not adopting an optical coupler to drive an electronic switch, and the on-off function is realized by not adopting a relay, so that the overall cost is low, and the on-chip integration is facilitated.
Description
Technical Field
The invention relates to a single live wire electronic control switch circuit, in particular to a low-power-consumption single live wire electronic control switch circuit.
Background
The LED lamp comprises an LED lamp body, a live wire access end and a zero line access end, wherein the live wire access end and the zero line access end are used for being connected with commercial power, a control switch is arranged between the LED lamp body and the commercial power for realizing on-off control between the LED lamp body and the commercial power, the live wire access end of the LED lamp body is connected with one end of the control switch, the other end of the control switch is connected with a live wire of the commercial power, and the zero line access end of the LED lamp body is connected. The LED lamp and the control switch are connected to mains supply in a series mode, when two ends of the control switch are short-circuited in the LED lamp, alternating voltage of the mains supply is applied to a live wire access end and a zero line access end of the LED lamp, and the LED lamp is in a lighting state; when the two ends of the control switch are internally opened, no current flows between the live wire access end and the zero line access end of the LED lamp, and the LED lamp is in a light-off state.
The single-live-wire electronic control switch is provided with two connecting ports, is an electronic control switch capable of directly replacing a traditional mechanical switch, is internally provided with an electronic control circuit, can realize more working modes relative to the mechanical switch, has more functions, is favored by users, and is widely applied to connection of an LED lamp and a mains supply by gradually replacing the mechanical switch.
The internal circuit structure of the existing LED lamp has the characteristic that when the current flowing between the live wire access end and the zero line access end of the LED lamp is smaller than or equal to a certain current magnitude, the LED lamp can keep a light-off state, and the maximum current value of the LED lamp which can keep the light-off state is used as the light-off current threshold value of the LED lamp, so that when the LED lamp is in a light-on state, the working current flowing between the live wire access end and the zero line access end of the LED lamp is large and larger than the light-off current threshold value of the LED lamp. When the LED lamp is in a light-off state, two ends of the single live wire electronic control switch are in a high-resistance cut-off state, and the single live wire electronic control switch utilizes a tiny current smaller than a light-off current threshold of the LED lamp as electric energy required by the work of the single live wire electronic control switch; and when the LED lamp is in a lighting state, the two ends of the single live wire electronic control switch are in a low-resistance conducting state, and then the single live wire electronic control switch obtains electric energy required by work from the working current of the LED lamp.
The existing single-live-wire electronic switch circuit adopts a micro-power-consumption switch conversion circuit to convert the electric energy of high voltage and low current to obtain the electric energy of low voltage and large current, and then adopts an optical coupler to control an electronic switch mode or adopts a relay to realize a switch function to control the on-state and the off-state of a single-live-wire electronic control switch. Although the existing single-live-wire electronic switching circuit has the advantages of high efficiency, large output current and wide application due to the existence of a micro-power-consumption switching conversion circuit, the optical coupler or the relay arranged in the single-live-wire electronic switching circuit can cause higher overall cost and is not beneficial to on-chip integration.
Disclosure of Invention
The invention aims to solve the technical problem of providing a low-power-consumption single-live-wire electronic control switch circuit which realizes a switching function by not adopting an optical coupler to drive an electronic switch, does not adopt a relay to realize the switching function, has lower overall cost and is beneficial to on-chip integration.
The technical scheme adopted by the invention for solving the technical problems is as follows: a micro-power single-live-wire electronic control switch circuit comprises a rectifying circuit, a trigger switch circuit, a linear constant current circuit, a first switch circuit, a second switch circuit, an energy storage circuit, a linear voltage stabilizing circuit and a sensor circuit, wherein the rectifying circuit is provided with a live wire output end, a zero line output end, an output end and a grounding end, the trigger switch circuit is provided with a positive electrode, a negative electrode and a control end, the control end of the trigger switch circuit is provided with a trigger voltage threshold, the linear constant current circuit is provided with a positive electrode and a negative electrode, the first switch circuit is provided with a positive electrode, a negative electrode and a control end, the second switch circuit is provided with an input end, an output end and a negative electrode, the linear voltage stabilizing circuit is provided with an input end, an output end and a negative electrode, and the sensor circuit is provided with a positive electrode, a negative, The output end of the rectifying circuit is respectively connected with the positive electrode of the trigger switch circuit, the positive electrode of the linear constant-current circuit and the positive electrode of the first switch circuit, the negative electrode of the first switch circuit and the control end of the trigger switch circuit are connected with the input end of the energy storage circuit, the negative electrode of the linear constant-current circuit and the control end of the first switch circuit are connected with the input end of the second switch circuit, and the output end of the second switch circuit and the output end of the energy storage circuit are connected with the input end of the linear voltage stabilizing circuit, the output end of the linear voltage stabilizing circuit is connected with the positive electrode of the sensor circuit, the output end of the sensor circuit is connected with the control end of the second switch circuit, and the negative electrode of the sensor circuit, the negative electrode of the linear voltage stabilizing circuit, the negative electrode of the second switch circuit, the negative electrode of the energy storage circuit, the negative electrode of the trigger switch circuit and the negative electrode of the rectifying circuit are connected;
when the first connecting end of the micro-power consumption single live wire electronic control switch circuit is connected with the live wire connecting end of the LED lamp, the second connecting end of the micro-power consumption single live wire electronic control switch circuit is connected with the live wire of the commercial power, the zero line input end of the LED lamp is connected with the zero line of the commercial power, the sensor circuit is used for sensing whether a person exists in a set detection area or whether the person has lighting control operation or lighting control operation, when the person exists or has the lighting control operation, a lighting control signal is output, when the person is not detected in a preset time period or the lighting control operation is performed, a lighting control signal is output, when the output end of the sensor circuit outputs the lighting control signal, the input end and the output end of the second switch circuit are conducted, meanwhile, the positive pole and the negative pole of the first switch circuit are cut off, and when the positive pole and the negative pole of the first switch circuit are cut off, the positive pole and the negative pole of the trigger switch circuit are also kept in a cut-off state, at the moment, the current flowing between the live wire input end and the zero line input end of the rectifying circuit is less than or equal to the light-off current threshold value of the LED lamp, the LED lamp is in the light-off state, the rectifying circuit rectifies the alternating current voltage accessed to the live wire input end and the zero line input end of the rectifying circuit to generate pulsating direct current voltage to be output at the output end of the rectifying circuit, the maximum current of the output end of the rectifying circuit is equal to the maximum current value set in the linear constant current circuit, the negative pole of the linear constant current circuit outputs constant current, meanwhile, the input end and the output end of the second switch circuit are conducted, the constant current is loaded to the input end of the linear voltage stabilizing circuit and the output end of the energy storage circuit, and the linear voltage stabilizing circuit performs voltage stabilization processing on the voltage output by the output end of the energy The sensor circuit provides working voltage and current;
when the output end of the sensor circuit outputs a lighting control signal, the input end and the output end of the second switch circuit are cut off, meanwhile, the positive electrode and the negative electrode of the first switch circuit are connected, along with the periodic change of the alternating current voltage of the commercial power, the pulsating direct current voltage output by the rectifying circuit is also from zero voltage to the highest voltage value, then the pulsating direct current voltage is periodically changed from the highest voltage value to the zero voltage, at the time of the zero voltage, the positive electrode and the negative electrode of the trigger switch circuit are cut off, in the process of rising from the zero voltage to the highest voltage value, when the pulsating direct current voltage output by the rectifying circuit is smaller than the trigger voltage threshold value of the trigger switch circuit, namely, the voltage loaded to the control end of the trigger switch circuit and the voltage at the input end of the energy storage circuit are smaller than the trigger voltage threshold value of the trigger switch circuit, when the voltage of the pulsating direct current voltage output by the rectifying circuit loaded to the input end of the energy storage circuit and the control end of the trigger switch circuit is more than or equal to the trigger voltage threshold value of the trigger switch circuit, the positive pole and the negative pole of the trigger switch circuit are conducted, and the positive pole and the negative pole of the trigger switch circuit are kept in a conducting state when current passes through the positive pole and the negative pole of the trigger switch circuit, the energy storage circuit can not be charged when the positive pole and the negative pole of the trigger switch circuit are conducted, and when the pulsating direct current voltage output by the output end of the rectifying circuit returns to zero again, the current flowing between the positive pole and the negative pole of the trigger switch circuit is zero, so that the positive pole and the negative pole of the trigger switch circuit are switched to a cut-off state, then the pulsating direct current voltage output by the output end of the rectifying circuit rises from zero again and repeats; when the LED lamp is on, the energy storage circuit continuously provides required input voltage for the linear voltage stabilizing circuit through periodic charging, and the output current of the linear voltage stabilizing circuit meets the current requirement of the sensor for working.
The linear constant current circuit comprises a first MOS tube, a first diode, a first resistor and a second resistor, wherein the first diode is a voltage stabilizing diode, the first MOS tube is an NMOS tube, a drain electrode of the first MOS tube is connected with one end of the first resistor, a connecting end of the drain electrode of the first MOS tube is an anode of the linear constant current circuit, the other end of the first resistor, a cathode of the first diode are connected with a grid electrode of the first MOS tube, a source electrode of the first MOS tube is connected with one end of the second resistor, the other end of the second resistor is connected with the anode of the first diode, and the connecting end of the second resistor is a cathode of the linear constant current circuit.
The first switch circuit comprises a second MOS tube, a second diode and a first capacitor, the second diode is a voltage stabilizing diode, the second MOS tube is an NMOS tube, the drain electrode of the second MOS tube is the anode of the first switch circuit, the grid electrode of the second MOS tube, one end of the first capacitor and the cathode of the second diode are connected, the connecting end of the grid electrode of the second MOS tube and one end of the first capacitor is the control end of the first switch circuit, the source electrode of the second MOS tube, the other end of the first capacitor and the anode of the second diode are connected, and the connecting end of the source electrode of the second MOS tube and the other end of the first capacitor is the cathode of the first switch circuit.
The second switch circuit comprises a third MOS tube, a fourth MOS tube and a third resistor, the third MOS tube is a PMOS tube, the fourth MOS tube is an NMOS tube, the source electrode of the third MOS tube is connected with one end of the third resistor, the connecting end of the third MOS tube is connected with the input end of the second switch circuit, the drain electrode of the third MOS tube is the output end of the second switch circuit, the grid electrode of the third MOS tube, the other end of the third resistor and the drain electrode of the fourth MOS tube are connected, the grid electrode of the fourth MOS tube is the control end of the second switch circuit, and the source electrode of the fourth MOS tube is the negative electrode of the second switch circuit.
The energy storage circuit comprises a third diode, a fourth resistor and a second capacitor, the third diode is a rectifier diode, the second capacitor is an electrolytic capacitor, the anode of the third diode is the input end of the energy storage circuit, the cathode of the third diode, the anode of the second capacitor and one end of the fourth resistor are connected, the other end of the fourth resistor is the output end of the energy storage circuit, and the cathode of the second capacitor is the cathode of the energy storage circuit.
The trigger switch circuit comprises a first thyristor, a third capacitor, a fourth diode and a fifth resistor, wherein the fourth diode is a voltage stabilizing diode, the negative electrode of the fourth diode is the control end of the trigger switch circuit, the positive electrode of the fourth diode, one end of the third capacitor and one end of the fifth resistor are connected with the gate electrode of the first thyristor, the positive electrode of the first thyristor is the positive electrode of the trigger switch circuit, the negative electrode of the first thyristor, the other end of the third capacitor and the other end of the fifth resistor are connected, and the connecting end of the negative electrode of the first thyristor, the other end of the third capacitor and the other end of the fifth resistor is the negative electrode of the trigger switch circuit.
The linear voltage stabilizing circuit comprises a fourth capacitor, a fifth diode and a first integrated circuit chip, the fifth diode is a voltage regulator diode, the first integrated circuit chip is an LDO voltage regulator circuit chip and is provided with a voltage input pin, a negative electrode pin and a voltage output pin, the voltage input pin of the LDO voltage stabilizing circuit chip, one end of the fourth capacitor and the cathode of the fifth diode are connected, and the connecting end of the fourth capacitor and the cathode of the fifth diode is the input end of the linear voltage stabilizing circuit, the voltage output pin of the LDO voltage stabilizing circuit chip is connected with one end of the fifth capacitor, the connection end of the fifth capacitor is the output end of the linear voltage stabilizing circuit, the other end of the fourth capacitor, the other end of the fifth capacitor, the anode of the fifth diode and the cathode pin of the LDO voltage stabilizing circuit chip are connected, and the connecting end of the fourth capacitor, the other end of the fifth capacitor, the anode of the fifth diode and the cathode pin of the LDO voltage stabilizing circuit chip is the cathode of the linear voltage stabilizing circuit.
Rectifier circuit adopt and realize for full-bridge rectifier circuit, full-bridge rectifier circuit have two alternating current input ends, a positive voltage output end and a negative voltage output end, full-bridge rectifier circuit's an alternating current input end do rectifier circuit's live wire input end, full-bridge rectifier circuit's another alternating current input end do rectifier circuit's zero line input end, full-bridge rectifier circuit's positive voltage output end do rectifier circuit's output, full-bridge rectifier circuit's negative voltage output end do rectifier circuit's earthing terminal.
The sensor circuit comprises a second integrated circuit chip, a sixth resistor, a seventh resistor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor and a sensing electrode plate, wherein the second integrated circuit chip adopts a model IFA127/22 and is packaged into a chip of TSOT23-6, the sensing electrode plate is a metal sheet with a certain area or a spiral planar coil structure, one end of the sixth resistor is the output end of the sensor circuit, the other end of the sixth resistor is connected with the 3 rd pin of the second integrated circuit chip, the 5 th pin of the second integrated circuit chip is connected with one end of the sixth capacitor, the 4 th pin of the second integrated circuit chip, one end of the seventh capacitor and one end of the eighth capacitor are connected, and the 6 th pin of the second integrated circuit chip is connected with one end of the eighth capacitor, One end of the seventh resistor is connected with one end of the ninth capacitor, the other end of the seventh resistor is connected with the sensing electrode plate, the other end of the sixth capacitor, the other end of the seventh capacitor, the other end of the eighth capacitor and the other end of the ninth capacitor are connected with the No. 2 pin of the second integrated circuit chip, the connecting end of the connecting end is the negative electrode of the sensor circuit, and the sensing electrode plate is the positive electrode of the sensor circuit. In the structure, a hand or a human body can be used as a control operation from the action of approaching an induction electrode plate and then leaving the induction electrode plate, then after each control operation, the output signal state of the output end of the sensor circuit is reversed, namely the original 1 level signal, the micro-power single-live-wire electronic control switch circuit controls the LED lamp to be in a lamp-on state, after the control operation, the output end of the sensor circuit outputs a 0 level signal, the micro-power single-live-wire electronic control switch circuit controls the LED lamp to be in a lamp-off state, the same original 0 level signal, the micro-power single-live-wire electronic control switch circuit controls the LED lamp to be in a lamp-off state, after the control operation, the output end of the sensor circuit outputs a1 level signal, and the micro-power single-live-wire electronic control switch circuit controls the LED lamp to be in a lamp-on state, therefore, people can select a contact or non-contact mode to control the micro-power single-live-wire electronic control switch circuit, and different use requirements are met.
The sensor circuit comprises a pyroelectric sensor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor and a photoresistor, the pyroelectric sensor is a digital pyroelectric infrared sensor, the reference model is BS612, one end of the eighth resistor is the output end of the sensor circuit, the other end of the eighth resistor is connected with the 2 nd pin of the pyroelectric sensor, one end of the ninth resistor is the positive electrode of the sensor circuit, the other end of the ninth resistor, one end of the tenth resistor, one end of the twelfth resistor, one end of the fourteenth resistor, one end of the tenth capacitor are connected with the 4 th pin of the pyroelectric sensor circuit, the other end of the tenth resistor, the one end of the eleventh capacitor and the 1 st pin of the pyroelectric sensor are connected, the other end of the twelfth resistor, the one end of the thirteenth resistor and the one end of the twelfth capacitor are connected to the 6 th pin of the pyroelectric sensor, the other end of the fourteenth resistor, the one end of the fifteenth resistor and the one end of the thirteenth capacitor are connected to the 5 th pin of the pyroelectric sensor, the other end of the fifteenth resistor and the one end of the photoresistor are connected, the other end of the tenth capacitor, the other end of the eleventh capacitor, the other end of the twelfth capacitor, the other end of the thirteenth capacitor, the other end of the eleventh resistor, the other end of the thirteenth capacitor, the first pin of the pyroelectric sensor, the second pin of the first resistor, the second pin of, The other end of the photoresistor is connected with the 3 rd pin of the pyroelectric sensor, and the connecting end of the photoresistor is the cathode of the sensor circuit. The circuit has an ambient light detection function, and can light only when the ambient light intensity is lower than an internal set value, and the circuit has a function of presetting the lighting time of one-time triggering, and the lighting time of one-time triggering is set according to the requirement; the circuit also has the function of setting the detection sensitivity, the detection distance can be adjusted in advance according to actual needs, and the micro-power single-live-wire electronic control switch circuit can be used for controlling automatic lighting and light-off of a passageway, namely, when people around the switch circuit are detected, the lamp is turned on, and after the people leave and can not be detected, the lamp is automatically turned off after the lamp is kept on for a certain time.
Compared with the prior art, the invention has the advantages that the micro-power single-live wire electronic control switch circuit is constructed by the rectifying circuit, the trigger switch circuit, the linear constant current circuit, the first switch circuit, the second switch circuit, the energy storage circuit, the linear voltage stabilizing circuit and the sensor circuit, the rectifying circuit is provided with a live wire output end, a null wire output end, an output end and a grounding end, the trigger switch circuit is provided with a positive pole, a negative pole and a control end, the control end of the trigger switch circuit is provided with a trigger voltage threshold, the linear constant current circuit is provided with a positive pole and a negative pole, the first switch circuit is provided with a positive pole, a negative pole and a control end, the second switch circuit is provided with an input end, an output end, a negative pole and a control end, the energy storage circuit is provided with an input end, an output end and a, the input end of the live wire of the rectification circuit is a first connecting end of a micro-power consumption single live wire electronic control switch circuit, the input end of the zero line of the rectification circuit is a second connecting end of the micro-power consumption single live wire electronic control switch circuit, the output end of the rectification circuit is respectively connected with the positive electrode of the trigger switch circuit, the positive electrode of the linear constant current circuit and the positive electrode of the first switch circuit, the negative electrode of the first switch circuit, the control end of the trigger switch circuit and the input end of the energy storage circuit, the negative electrode of the linear constant current circuit, the control end of the first switch circuit and the input end of the second switch circuit, the output end of the energy storage circuit and the input end of the linear voltage stabilizing circuit, the output end of the linear voltage stabilizing circuit is connected with the positive electrode of the sensor circuit, the output end of the sensor circuit, The negative electrode of the linear voltage stabilizing circuit, the negative electrode of the second switching circuit, the negative electrode of the energy storage circuit and the negative electrode of the trigger switching circuit are connected with the negative electrode of the rectifying circuit; when a first connecting end of the micro-power single-live-wire electronic control switch circuit is connected with a live wire connecting end of an LED lamp, a second connecting end of the micro-power single-live-wire electronic control switch circuit is connected with a live wire of commercial power, a zero line input end of the LED lamp is connected with a zero line of the commercial power, a sensor circuit is used for sensing whether a person or a person in a detection area has lighting control operation or lighting control operation, a lighting control signal is output when the person or the person has lighting control operation, a lighting control signal is output when a human body is not detected or the lighting control operation is carried out within a preset time period, a lighting control signal is output when an output end of the sensor circuit, the input end and the output end of the second switch circuit are conducted, meanwhile, the anode and the cathode of the first switch circuit are cut off, and when the anode and the cathode of the first switch circuit are, the positive pole and the negative pole of the trigger switch circuit are also kept in a cut-off state, the current flowing between the live wire input end and the zero line input end of the rectifying circuit is smaller than or equal to the light-off current threshold value of the LED lamp, the LED lamp is in the light-off state, the rectifying circuit rectifies alternating current voltages connected to the live wire input end and the zero line input end of the rectifying circuit to generate pulsating direct current voltage, and the pulsating direct current voltage is output at the output end of the rectifying circuit, the maximum current of the output end of the linear constant current circuit is equal to the maximum current value set in the linear constant current circuit, the negative pole of the linear constant current circuit outputs constant current, meanwhile, the input end and the output end of the second switch circuit are conducted, the constant current is loaded to the input end of the linear voltage stabilizing circuit and the output end of the energy storage circuit, and the linear voltage stabilizing circuit performs voltage stabilizing processing on the voltage output by the output end of the energy storage circuit and then outputs constant voltage at the output end of the linear voltage stabilizing circuit to provide working voltage and current for the sensor circuit; when the output end of the sensor circuit outputs a lighting control signal, the input end and the output end of the second switch circuit are cut off, meanwhile, the anode and the cathode of the first switch circuit are conducted, along with the periodic change of the alternating-current voltage of the mains supply, the pulsating direct-current voltage output by the rectifying circuit is from zero voltage to the highest voltage value, then the pulsating direct-current voltage is periodically changed from the highest voltage value to the zero voltage value, at the time of the zero voltage, the anode and the cathode of the trigger switch circuit are cut off, in the process of rising from the zero voltage to the highest voltage value, when the pulsating direct-current voltage output by the rectifying circuit is smaller than the trigger voltage threshold value of the trigger switch circuit, namely the voltage loaded to the control end of the trigger switch circuit and the voltage at the input end of the energy storage circuit are smaller than the trigger voltage threshold value of the trigger switch circuit, the energy storage circuit is in a charging state, and when the pulsating direct-current voltage output by the rectifying circuit is loaded When the voltage of the control end is more than or equal to the trigger voltage threshold value of the trigger switch circuit, the anode and the cathode of the trigger switch circuit are conducted, and when current passes through the anode and the cathode of the trigger switch circuit, the conduction state is kept, when the anode and the cathode of the trigger switch circuit are conducted, the energy storage circuit can not be charged, when the pulsating direct current voltage output by the output end of the rectification circuit returns to the voltage zero again, the current flowing between the anode and the cathode of the trigger switch circuit is zero at the moment, the anode and the cathode of the trigger switch circuit are converted into the cut-off state, and then the pulsating direct current voltage output by the output end of the rectification circuit is increased from zero again and repeats; when the LED lamp is on, the energy storage circuit continuously provides required input voltage for the linear voltage stabilizing circuit through periodic charging, and the output current of the linear voltage stabilizing circuit meets the current requirement of the working of the sensor; therefore, the invention realizes the switching function by not adopting an optical coupler to drive an electronic switch, and also realizes the switching function by adopting a relay, has lower overall cost and is beneficial to on-chip integration.
Drawings
FIG. 1 is a schematic block diagram of the structure of a micro-power single-live-wire electronic control switch circuit according to the present invention;
FIG. 2 is a circuit diagram of the micro-power single-live-wire electronic control switch circuit of the present invention;
FIG. 3 is a circuit diagram of a sensor circuit of a micro-power single-fire-wire electronic control switch circuit according to a first embodiment of the present invention;
fig. 4 is a circuit diagram of a sensor circuit of a micro-power single-fire-wire electronic control switch circuit according to a second embodiment of the invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying examples.
The first embodiment is as follows: as shown in FIG. 1, a micro-power single-live-wire electronic control switch circuit comprises a rectifier circuit, a trigger switch circuit, a linear constant current circuit, a first switch circuit, a second switch circuit, an energy storage circuit, a linear voltage stabilizing circuit and a sensor circuit, wherein the rectifier circuit comprises a live-wire output end, a zero-wire output end, an output end and a grounding end, the trigger switch circuit comprises a positive electrode, a negative electrode and a control end, the control end of the trigger switch circuit is provided with a trigger voltage threshold, the linear constant current circuit comprises a positive electrode and a negative electrode, the first switch circuit comprises a positive electrode, a negative electrode and a control end, the second switch circuit comprises an input end, an output end, a negative electrode and a control end, the energy storage circuit comprises an input end, an output end and a negative electrode, the linear voltage stabilizing circuit comprises an input end, an output end and a negative electrode, the sensor circuit comprises a positive electrode, the input end of a zero line of the rectifying circuit is a second connecting end of a micro-power single-live-wire electronic control switch circuit, the output end of the rectifying circuit is respectively connected with the anode of the trigger switch circuit, the anode of the linear constant current circuit and the anode of the first switch circuit, the cathode of the first switch circuit, the control end of the trigger switch circuit and the input end of the energy storage circuit, the cathode of the linear constant current circuit, the control end of the first switch circuit and the input end of the second switch circuit are connected, the output end of the second switch circuit and the output end of the energy storage circuit are connected with the input end of the linear voltage stabilizing circuit, the output end of the linear voltage stabilizing circuit is connected with the anode of the sensor circuit, the output end of the sensor circuit is connected with the control end of the second switch circuit, and, the negative electrode of the linear voltage stabilizing circuit, the negative electrode of the second switching circuit, the negative electrode of the energy storage circuit and the negative electrode of the trigger switching circuit are connected with the negative electrode of the rectifying circuit;
when a first connecting end of the micro-power single-live-wire electronic control switch circuit is connected with a live wire connecting end of an LED lamp, a second connecting end of the micro-power single-live-wire electronic control switch circuit is connected with a live wire of commercial power, a zero line input end of the LED lamp is connected with a zero line of the commercial power, a sensor circuit is used for sensing whether a person or a person in a detection area has lighting control operation or lighting control operation, a lighting control signal is output when the person or the person has lighting control operation, a lighting control signal is output when a human body is not detected or the lighting control operation is carried out within a preset time period, a lighting control signal is output when an output end of the sensor circuit, the input end and the output end of the second switch circuit are conducted, meanwhile, the anode and the cathode of the first switch circuit are cut off, and when the anode and the cathode of the first switch circuit are, the positive pole and the negative pole of the trigger switch circuit are also kept in a cut-off state, the current flowing between the live wire input end and the zero line input end of the rectifying circuit is smaller than or equal to the light-off current threshold value of the LED lamp, the LED lamp is in the light-off state, the rectifying circuit rectifies alternating current voltages connected to the live wire input end and the zero line input end of the rectifying circuit to generate pulsating direct current voltage, and the pulsating direct current voltage is output at the output end of the rectifying circuit, the maximum current of the output end of the linear constant current circuit is equal to the maximum current value set in the linear constant current circuit, the negative pole of the linear constant current circuit outputs constant current, meanwhile, the input end and the output end of the second switch circuit are conducted, the constant current is loaded to the input end of the linear voltage stabilizing circuit and the output end of the energy storage circuit, and the linear voltage stabilizing circuit performs voltage stabilizing processing on the voltage output by the output end of the energy storage circuit and then outputs constant voltage at the output end of the linear voltage stabilizing circuit to provide working voltage and current for the sensor circuit;
when the output end of the sensor circuit outputs a lighting control signal, the input end and the output end of the second switch circuit are cut off, meanwhile, the anode and the cathode of the first switch circuit are conducted, along with the periodic change of the alternating-current voltage of the mains supply, the pulsating direct-current voltage output by the rectifying circuit is from zero voltage to the highest voltage value, then the pulsating direct-current voltage is periodically changed from the highest voltage value to the zero voltage value, at the time of the zero voltage, the anode and the cathode of the trigger switch circuit are cut off, in the process of rising from the zero voltage to the highest voltage value, when the pulsating direct-current voltage output by the rectifying circuit is smaller than the trigger voltage threshold value of the trigger switch circuit, namely the voltage loaded to the control end of the trigger switch circuit and the voltage at the input end of the energy storage circuit are smaller than the trigger voltage threshold value of the trigger switch circuit, the energy storage circuit is in a charging state, and when the pulsating direct-current voltage output by the rectifying circuit is loaded When the voltage of the control end is more than or equal to the trigger voltage threshold value of the trigger switch circuit, the anode and the cathode of the trigger switch circuit are conducted, and when current passes through the anode and the cathode of the trigger switch circuit, the conduction state is kept, when the anode and the cathode of the trigger switch circuit are conducted, the energy storage circuit can not be charged, when the pulsating direct current voltage output by the output end of the rectification circuit returns to the voltage zero again, the current flowing between the anode and the cathode of the trigger switch circuit is zero at the moment, the anode and the cathode of the trigger switch circuit are converted into the cut-off state, and then the pulsating direct current voltage output by the output end of the rectification circuit is increased from zero again and repeats;
when the LED lamp is on, the energy storage circuit continuously provides required input voltage for the linear voltage stabilizing circuit through periodic charging, and the output current of the linear voltage stabilizing circuit meets the current requirement of the working of the sensor.
As shown in fig. 2, in this embodiment, the linear constant current circuit includes a first MOS transistor M1, a first diode D1, a first resistor R1, and a second resistor R2, the first diode D1 is a zener diode, the first MOS transistor M1 is an NMOS transistor, a drain of the first MOS transistor M1 is connected to one end of the first resistor R1, a connection end of the first MOS transistor M1 is an anode of the linear constant current circuit, the other end of the first resistor R1, a cathode of the first diode D1, and a gate of the first MOS transistor M1 are connected, a source of the first MOS transistor M1 is connected to one end of the second resistor R2, the other end of the second resistor R2 is connected to an anode of the first diode D1, and a connection end of the second resistor R2 is a cathode of the linear constant current circuit.
As shown in fig. 2, in this embodiment, the first switch circuit includes a second MOS transistor M2, a second diode D2 and a first capacitor C1, the second diode D2 is a zener diode, the second MOS transistor M2 is an NMOS transistor, the drain of the second MOS transistor M2 is the anode of the first switch circuit, the gate of the second MOS transistor M2, one end of the first capacitor C1 and the cathode of the second diode D2 are connected, and the connection end thereof is the control end of the first switch circuit, the source of the second MOS, the other end of the first capacitor C1 and the anode of the second diode D2 are connected, and the connection end thereof is the cathode of the first switch circuit.
As shown in fig. 2, in this embodiment, the second switch circuit includes a third MOS transistor M3, a fourth MOS transistor M4, and a third resistor R3, the third MOS transistor M3 is a PMOS transistor, the fourth MOS transistor M4 is an NMOS transistor, a source of the third MOS transistor M3 is connected to one end of the third resistor R3, a connection end of the third MOS transistor M3 is an input end of the second switch circuit, a drain of the third MOS transistor M3 is an output end of the second switch circuit, a gate of the third MOS transistor M3, another end of the third resistor R3 is connected to a drain of the fourth MOS transistor M4, a gate of the fourth MOS transistor M4 is a control end of the second switch circuit, and a source of the fourth MOS transistor M4 is a negative electrode of the second switch circuit.
As shown in fig. 2, in this embodiment, the energy storage circuit includes a third diode D3, a fourth resistor R4, and a second capacitor C2, the third diode D3 is a rectifying diode, the second capacitor C2 is an electrolytic capacitor, an anode of the third diode D3 is an input end of the energy storage circuit, a cathode of the third diode D3, an anode of the second capacitor C2, and one end of the fourth resistor R4 are connected, another end of the fourth resistor R4 is an output end of the energy storage circuit, and a cathode of the second capacitor C2 is a cathode of the energy storage circuit.
As shown in fig. 2, in this embodiment, the trigger switch circuit includes a first thyristor J1, a third capacitor C3, a fourth diode D4, and a fifth resistor R5, the fourth diode D4 is a zener diode, a cathode of the fourth diode D4 is a control terminal of the trigger switch circuit, an anode of the fourth diode D4, one end of the third capacitor C3, one end of the fifth resistor R5, and a gate of the first thyristor J1 are connected, an anode of the first thyristor J1 is an anode of the trigger switch circuit, a cathode of the first thyristor J1, the other end of the third capacitor C3, and the other end of the fifth resistor R5 are connected, and a connection terminal thereof is a cathode of the trigger switch circuit.
As shown in fig. 2, in this embodiment, the linear voltage regulator circuit includes a fourth capacitor C4, a fifth capacitor C5, a fifth diode D5, and a first integrated circuit chip U1, the fifth diode D5 is a zener diode, the first integrated circuit chip U1 is an LDO voltage regulator circuit chip, and has a voltage input pin, a negative pin, and a voltage output pin, where the voltage input pin of the LDO voltage regulator circuit chip, one end of the fourth capacitor C4 and the negative electrode of the fifth diode D5 are connected, and a connection end thereof is an input end of the linear voltage regulator circuit, the voltage output pin of the LDO voltage regulator circuit chip and one end of the fifth capacitor C5 are connected, and a connection end thereof is an output end of the linear voltage regulator circuit, and the other end of the fourth capacitor C4, the other end of the fifth capacitor C5, and an anode of the fifth diode D5 and a negative pin of the LDO voltage regulator circuit chip are.
As shown in fig. 2, in this embodiment, the rectifier circuit is implemented by a full-bridge rectifier circuit Db, the full-bridge rectifier circuit Db has two ac input ends, a positive voltage output end and a negative voltage output end, one ac input end of the full-bridge rectifier circuit Db is a live wire input end of the rectifier circuit, another ac input end of the full-bridge rectifier circuit Db is a zero line input end of the rectifier circuit, the positive voltage output end of the full-bridge rectifier circuit Db is an output end of the rectifier circuit, and the negative voltage output end of the full-bridge rectifier circuit Db is a ground end of the.
As shown in fig. 3, in this embodiment, the sensor circuit includes a second integrated circuit chip U2, a sixth resistor R6, a seventh resistor R7, a sixth capacitor C6, a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9 and a sensing electrode pad T, the second integrated circuit chip U2 adopts model IFA127/22, and is packaged as a chip of TSOT23-6, the sensing electrode pad T is a metal sheet or a spiral planar coil structure with a certain area, one end of the sixth resistor R6 is an output end of the sensor circuit, the other end of the sixth resistor R6 is connected to the 3 rd pin of the second integrated circuit chip U2, the 5 th pin of the second integrated circuit chip U2 is connected to one end of the sixth capacitor C6, one end of the 4 th pin of the second integrated circuit chip U2, one end of the seventh capacitor C7 is connected to one end of the eighth capacitor C8, the first pin of the second integrated circuit chip U2, the seventh pin of the seventh resistor R7 is connected to one end of the ninth capacitor C9, the other end of the seventh resistor R7 is connected with the sensing electrode plate T, the other end of the sixth capacitor C6, the other end of the seventh capacitor C7, the other end of the eighth capacitor C8 and the other end of the ninth capacitor C9 are connected with the 2 nd pin of the second integrated circuit chip U2, the connecting end of the connecting end is the negative electrode of the sensor circuit, and the sensing electrode plate T is the positive electrode of the sensor circuit.
Example two: this embodiment is substantially the same as the first embodiment, except that: as shown in fig. 4, in the present embodiment, the sensor circuit includes a pyroelectric sensor PIR, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a thirteenth resistor R13, a fourteenth resistor R14, a fifteenth resistor R15, a tenth capacitor C10, an eleventh capacitor C11, a twelfth capacitor C12, a thirteenth capacitor C13 and a photo-sensitive resistor RS, the pyroelectric sensor PIR is a digital pyroelectric infrared sensor, and is referred to as BS612, one end of the eighth resistor R8 is an output end of the sensor circuit, the other end of the eighth resistor R8 is connected to the 2 nd pin of the pyroelectric sensor PIR, one end of the ninth resistor R9 is an anode of the sensor circuit, the other end of the ninth resistor R9, one end of the tenth resistor R10, one end of the twelfth resistor R12, one end of the fourteenth resistor R14, one end of the tenth capacitor C10 and the fourth pin of the pyroelectric sensor, the other end of a tenth resistor R10, one end of an eleventh resistor R11 and one end of an eleventh capacitor C11 are connected with the 1 st pin of the pyroelectric sensor PIR, the other end of a twelfth resistor R12, one end of a thirteenth resistor R13 and one end of a twelfth capacitor C12 are connected with the 6 th pin of the pyroelectric sensor PIR, the other end of a fourteenth resistor R14, one end of a fifteenth resistor R15 and one end of a thirteenth capacitor C13 are connected with the 5 th pin of the pyroelectric sensor PIR, the other end of a fifteenth resistor R15 is connected with one end of a photoresistor RS, the other end of the tenth capacitor C10, the other end of the eleventh capacitor C11, the other end of the twelfth capacitor C12, the other end of the thirteenth capacitor C13, the other end of the eleventh resistor R11, the other end of the thirteenth resistor R13, the other end of the photoresistor RS and the 3 rd pin of the pyroelectric sensor PIR are connected, and the connection end of the photoresistor RS is the negative electrode of the sensor circuit.
Claims (10)
1. The micro-power single-live-wire electronic control switch circuit is characterized by comprising a rectifying circuit, a trigger switch circuit, a linear constant current circuit, a first switch circuit, a second switch circuit, an energy storage circuit, a linear voltage stabilizing circuit and a sensor circuit, wherein the rectifying circuit is provided with a live wire output end, a zero wire output end, an output end and a grounding end, the trigger switch circuit is provided with a positive electrode, a negative electrode and a control end, the control end of the trigger switch circuit is provided with a trigger voltage threshold, the linear constant current circuit is provided with a positive electrode and a negative electrode, the first switch circuit is provided with a positive electrode, a negative electrode and a control end, the second switch circuit is provided with an input end, an output end, a negative electrode and a control end, the energy storage circuit is provided with an input end, an output end and a negative electrode, the linear voltage stabilizing circuit is provided with an input end, an output end, The output end of the rectifying circuit is respectively connected with the positive electrode of the trigger switch circuit, the positive electrode of the linear constant-current circuit and the positive electrode of the first switch circuit, the negative electrode of the first switch circuit and the control end of the trigger switch circuit are connected with the input end of the energy storage circuit, the negative electrode of the linear constant-current circuit and the control end of the first switch circuit are connected with the input end of the second switch circuit, and the output end of the second switch circuit and the output end of the energy storage circuit are connected with the input end of the linear voltage stabilizing circuit, the output end of the linear voltage stabilizing circuit is connected with the positive electrode of the sensor circuit, the output end of the sensor circuit is connected with the control end of the second switch circuit, and the negative electrode of the sensor circuit, the negative electrode of the linear voltage stabilizing circuit, the negative electrode of the second switch circuit, the negative electrode of the energy storage circuit, the negative electrode of the trigger switch circuit and the negative electrode of the rectifying circuit are connected;
when the first connecting end of the micro-power consumption single live wire electronic control switch circuit is connected with the live wire connecting end of the LED lamp, the second connecting end of the micro-power consumption single live wire electronic control switch circuit is connected with the live wire of the commercial power, the zero line input end of the LED lamp is connected with the zero line of the commercial power, the sensor circuit is used for sensing whether a person exists in a set detection area or whether the person has lighting control operation or lighting control operation, when the person exists or has the lighting control operation, a lighting control signal is output, when the person is not detected in a preset time period or the lighting control operation is performed, a lighting control signal is output, when the output end of the sensor circuit outputs the lighting control signal, the input end and the output end of the second switch circuit are conducted, meanwhile, the positive pole and the negative pole of the first switch circuit are cut off, and when the positive pole and the negative pole of the first switch circuit are cut off, the positive pole and the negative pole of the trigger switch circuit are also kept in a cut-off state, at the moment, the current flowing between the live wire input end and the zero line input end of the rectifying circuit is less than or equal to the light-off current threshold value of the LED lamp, the LED lamp is in the light-off state, the rectifying circuit rectifies the alternating current voltage accessed to the live wire input end and the zero line input end of the rectifying circuit to generate pulsating direct current voltage to be output at the output end of the rectifying circuit, the maximum current of the output end of the rectifying circuit is equal to the maximum current value set in the linear constant current circuit, the negative pole of the linear constant current circuit outputs constant current, meanwhile, the input end and the output end of the second switch circuit are conducted, the constant current is loaded to the input end of the linear voltage stabilizing circuit and the output end of the energy storage circuit, and the linear voltage stabilizing circuit performs voltage stabilization processing on the voltage output by the output end of the energy The sensor circuit provides working voltage and current;
when the output end of the sensor circuit outputs a lighting control signal, the input end and the output end of the second switch circuit are cut off, meanwhile, the positive electrode and the negative electrode of the first switch circuit are connected, along with the periodic change of the alternating current voltage of the commercial power, the pulsating direct current voltage output by the rectifying circuit is also from zero voltage to the highest voltage value, then the pulsating direct current voltage is periodically changed from the highest voltage value to the zero voltage, at the time of the zero voltage, the positive electrode and the negative electrode of the trigger switch circuit are cut off, in the process of rising from the zero voltage to the highest voltage value, when the pulsating direct current voltage output by the rectifying circuit is smaller than the trigger voltage threshold value of the trigger switch circuit, namely, the voltage loaded to the control end of the trigger switch circuit and the voltage at the input end of the energy storage circuit are smaller than the trigger voltage threshold value of the trigger switch circuit, when the voltage of the pulsating direct current voltage output by the rectifying circuit loaded to the input end of the energy storage circuit and the control end of the trigger switch circuit is more than or equal to the trigger voltage threshold value of the trigger switch circuit, the positive pole and the negative pole of the trigger switch circuit are conducted, and the positive pole and the negative pole of the trigger switch circuit are kept in a conducting state when current passes through the positive pole and the negative pole of the trigger switch circuit, the energy storage circuit can not be charged when the positive pole and the negative pole of the trigger switch circuit are conducted, and when the pulsating direct current voltage output by the output end of the rectifying circuit returns to zero again, the current flowing between the positive pole and the negative pole of the trigger switch circuit is zero, so that the positive pole and the negative pole of the trigger switch circuit are switched to a cut-off state, then the pulsating direct current voltage output by the output end of the rectifying circuit rises from zero again and repeats;
when the LED lamp is on, the energy storage circuit continuously provides required input voltage for the linear voltage stabilizing circuit through periodic charging, and the output current of the linear voltage stabilizing circuit meets the current requirement of the sensor for working.
2. The micropower single-live wire electronic control switch circuit of claim 1, wherein the linear constant current circuit comprises a first MOS transistor, a first diode, a first resistor and a second resistor, the first diode is a voltage stabilizing diode, the first MOS transistor is an NMOS transistor, a drain of the first MOS transistor is connected with one end of the first resistor, a connection end of the first MOS transistor is an anode of the linear constant current circuit, the other end of the first resistor, a cathode of the first diode is connected with a gate of the first MOS transistor, a source of the first MOS transistor is connected with one end of the second resistor, the other end of the second resistor is connected with the anode of the first diode, and a connection end of the second resistor is a cathode of the linear constant current circuit.
3. A micro-power single-fire wire electronic control switch circuit according to claim 1, wherein the first switch circuit comprises a second MOS transistor, a second diode and a first capacitor, the second diode is a zener diode, the second MOS transistor is an NMOS transistor, the drain of the second MOS transistor is the anode of the first switch circuit, the gate of the second MOS transistor, one end of the first capacitor and the cathode of the second diode are connected, and the connection end thereof is the control end of the first switch circuit, the source of the second MOS transistor, the other end of the first capacitor and the anode of the second diode are connected, and the connection end thereof is the cathode of the first switch circuit.
4. The micropower single-live wire electronic control switch circuit of claim 1, wherein the second switch circuit comprises a third MOS transistor, a fourth MOS transistor and a third resistor, the third MOS transistor is a PMOS transistor, the fourth MOS transistor is an NMOS transistor, the source of the third MOS transistor is connected to one end of the third resistor, the connection end of the third MOS transistor is the input end of the second switch circuit, the drain of the third MOS transistor is the output end of the second switch circuit, the gate of the third MOS transistor, the other end of the third resistor is connected to the drain of the fourth MOS transistor, the gate of the fourth MOS transistor is the control end of the second switch circuit, and the source of the fourth MOS transistor is the negative electrode of the second switch circuit.
5. The micro-power single-live-wire electronic control switch circuit according to claim 1, wherein the energy storage circuit comprises a third diode, a fourth resistor and a second capacitor, the third diode is a rectifier diode, the second capacitor is an electrolytic capacitor, an anode of the third diode is an input terminal of the energy storage circuit, a cathode of the third diode, an anode of the second capacitor and one end of the fourth resistor are connected, another end of the fourth resistor is an output terminal of the energy storage circuit, and a cathode of the second capacitor is a cathode of the energy storage circuit.
6. The micro-power single-live-wire electronic control switch circuit according to claim 1, wherein the trigger switch circuit comprises a first thyristor, a third capacitor, a fourth diode and a fifth resistor, the fourth diode is a voltage regulator diode, a cathode of the fourth diode is a control terminal of the trigger switch circuit, an anode of the fourth diode, one terminal of the third capacitor and one terminal of the fifth resistor are connected to a gate of the first thyristor, an anode of the first thyristor is an anode of the trigger switch circuit, a cathode of the first thyristor, the other terminal of the third capacitor and the other terminal of the fifth resistor are connected, and a connection terminal thereof is a cathode of the trigger switch circuit.
7. The micro-power single-live-wire electronic control switch circuit of claim 1, wherein the linear regulator circuit comprises a fourth capacitor, a fifth diode and a first integrated circuit chip, the fifth diode is a zener diode, the first integrated circuit chip is an LDO regulator circuit chip having a voltage input pin, a negative pin and a voltage output pin, the voltage input pin of the LDO regulator circuit chip, one end of the fourth capacitor and the negative electrode of the fifth diode are connected and the connection end thereof is the input end of the linear regulator circuit, the voltage output pin of the LDO regulator circuit chip and one end of the fifth capacitor are connected and the connection end thereof is the output end of the linear regulator circuit, the other end of the fourth capacitor, the other end of the fifth capacitor, the voltage output pin of the LDO regulator circuit chip, the voltage output pin of the fifth capacitor, the connection end thereof is the output end of the linear regulator circuit, the other end of the fourth, And the anode of the fifth diode is connected with the cathode pin of the LDO voltage stabilizing circuit chip, and the connecting end of the fifth diode is the cathode of the linear voltage stabilizing circuit.
8. The switch circuit of claim 1, wherein said rectifier circuit is implemented as a full-bridge rectifier circuit, said full-bridge rectifier circuit has two ac inputs, a positive voltage output and a negative voltage output, said one ac input of said full-bridge rectifier circuit is said live input of said rectifier circuit, said another ac input of said full-bridge rectifier circuit is said zero line input of said rectifier circuit, said positive voltage output of said full-bridge rectifier circuit is said output of said rectifier circuit, said negative voltage output of said full-bridge rectifier circuit is said ground terminal of said rectifier circuit.
9. The micro-power single-live wire electronic control switch circuit according to claim 1, wherein the sensor circuit comprises a second integrated circuit chip, a sixth resistor, a seventh resistor, a sixth capacitor, a seventh capacitor, an eighth capacitor, a ninth capacitor and a sensing electrode pad, the second integrated circuit chip adopts a model IFA127/22 and is packaged as a chip of TSOT23-6, the sensing electrode pad is a metal sheet with a certain area or a spiral planar coil structure, one end of the sixth resistor is an output end of the sensor circuit, the other end of the sixth resistor is connected with the 3 rd pin of the second integrated circuit chip, the 5 th pin of the second integrated circuit chip is connected with one end of the sixth capacitor, the 4 th pin of the second integrated circuit chip, one end of the seventh capacitor is connected with one end of the eighth capacitor, the pin 6 of the second integrated circuit chip, one end of the seventh resistor and one end of the ninth capacitor are connected, the other end of the seventh resistor is connected with the sensing electrode plate, the other end of the sixth capacitor, the other end of the seventh capacitor, the other end of the eighth capacitor and the other end of the ninth capacitor are connected with the pin 2 of the second integrated circuit chip, the connecting end of the sixth capacitor, the other end of the seventh capacitor, the other end of the eighth capacitor and the other end of the ninth capacitor is the negative electrode of the sensor circuit, and the sensing electrode plate is the positive electrode of the sensor circuit.
10. The micro-power single-hot wire electronic control switch circuit as claimed in claim 1, wherein the sensor circuit comprises a pyroelectric sensor, an eighth resistor, a ninth resistor, a tenth resistor, an eleventh resistor, a twelfth resistor, a thirteenth resistor, a fourteenth resistor, a fifteenth resistor, a tenth capacitor, an eleventh capacitor, a twelfth capacitor, a thirteenth capacitor and a photo-sensitive resistor, the pyroelectric sensor is a digital pyroelectric infrared sensor, reference model is BS612, one end of the eighth resistor is an output end of the sensor circuit, the other end of the eighth resistor is connected to the 2 nd pin of the pyroelectric sensor, one end of the ninth resistor is a positive electrode of the sensor circuit, the other end of the ninth resistor, one end of the tenth resistor, one end of the twelfth resistor, a positive electrode of the pyroelectric sensor circuit, and the other end of the ninth resistor, the tenth resistor, the second end of the twelfth resistor, One end of the fourteenth resistor, one end of the tenth capacitor and the 4 th pin of the pyroelectric sensor are connected, the other end of the tenth resistor, one end of the eleventh resistor and one end of the eleventh capacitor are connected with the 1 st pin of the pyroelectric sensor, the other end of the twelfth resistor, one end of the thirteenth resistor and one end of the twelfth capacitor are connected with the 6 th pin of the pyroelectric sensor, the other end of the fourteenth resistor, one end of the fifteenth resistor and one end of the thirteenth capacitor are connected with the 5 th pin of the pyroelectric sensor, the other end of the fifteenth resistor and one end of the photoresistor are connected, the other end of the tenth capacitor, the other end of the eleventh capacitor, the other end of the twelfth capacitor, the other end of the pyroelectric sensor are connected, The other end of the thirteenth capacitor, the other end of the eleventh resistor, the other end of the thirteenth resistor, the other end of the photosensitive resistor and the pin 3 of the pyroelectric sensor are connected, and the connecting end of the photosensitive resistor is the cathode of the sensor circuit.
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| CN202010595485.9A CN111787661A (en) | 2020-06-28 | 2020-06-28 | Low-power consumption single live wire electronic control switch circuit |
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| CN202010595485.9A CN111787661A (en) | 2020-06-28 | 2020-06-28 | Low-power consumption single live wire electronic control switch circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114007306A (en) * | 2021-11-25 | 2022-02-01 | 鸣志电器(太仓)有限公司 | Nuclear radiation resistant LED driver circuit |
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2020
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114007306A (en) * | 2021-11-25 | 2022-02-01 | 鸣志电器(太仓)有限公司 | Nuclear radiation resistant LED driver circuit |
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