CN111800907A

CN111800907A - Intelligent lamp circuit

Info

Publication number: CN111800907A
Application number: CN202010700548.2A
Authority: CN
Inventors: 李伟信; 李昭强; 蔡华; 李志强; 曾凡裕
Original assignee: Shenghui Holdings Ltd
Current assignee: Shenghui Holdings Ltd
Priority date: 2020-07-20
Filing date: 2020-07-20
Publication date: 2020-10-20

Abstract

The invention relates to an intelligent lamp circuit, which comprises a brightness detection circuit, a radar sensing circuit, an infrared thermopile sensing circuit, a signal processing circuit, an electronic switch circuit, an LED lamp circuit and a power circuit, wherein the brightness detection circuit is connected with the radar sensing circuit; the power supply circuit supplies power; the brightness detection circuit, the radar sensing circuit and the infrared thermopile sensing circuit are connected with the input end of the signal processing circuit; the electronic switch circuit is connected with the signal processing circuit and the LED lamp circuit; the signal processing circuit sends a switching signal to the electronic switching circuit, so that the electronic switching circuit sends an electric control signal to the LED lamp circuit, and the LED lamp circuit controls the LED lamp to be turned on or turned off. The detection of human motion and stillness in daytime and at night is realized by adopting radar, infrared and brightness detection technologies and comprehensive application, and the problem of sparking is reduced by using an electronic switch without a mechanical contact.

Description

Intelligent lamp circuit

Technical Field

The invention relates to the technical field of lighting, in particular to an intelligent lamp circuit.

Background

At present, the known human body induction lamp circuit in the market is mainly radar induction or infrared induction, and the two are based on the removal of object and detect, and when someone moves, lamps and lanterns are lighted, and when the human body is static, its unable accurate detection human static existence, lamps and lanterns can only extinguish to can not adjust according to luminance, bring inconvenience for the use, influenced the use practicality and the local limit of this intelligent induction circuit's lamps and lanterns. In addition, the known radar detection lamp is split, and a relay is used for switching an alternating current power supply, so that the mode of switching the lamp is achieved, and the hidden troubles of difficulty in installation and safety are simultaneously installed.

Disclosure of Invention

The invention provides an intelligent lamp circuit, aiming at solving the problems that after a human body enters a detection environment, only a moving object can be detected, a static object cannot be detected, the function is single, in addition, the inherent contact loss of a relay is caused, and the service life is short, and the intelligent lamp circuit comprises a brightness detection circuit, a radar sensing circuit, an infrared thermopile sensing circuit, a signal processing circuit, an electronic switch circuit, an LED lamp circuit and a power supply circuit;

the power supply circuit is connected with the brightness detection circuit, the radar sensing circuit, the infrared thermopile sensing circuit, the signal processing circuit, the electronic switch circuit and the LED lamp circuit for supplying power;

the brightness detection circuit, the radar sensing circuit and the infrared thermopile sensing circuit are connected with the input end of the signal processing circuit; the input end of the electronic switch circuit is connected with the output end of the signal processing circuit, and the output end of the electronic switch circuit is connected with the input end of the LED lamp circuit;

the signal processing circuit receives output signals of the brightness detection circuit, the radar sensing circuit and the infrared thermopile sensing circuit and sends a switching signal to the electronic switching circuit, so that the electronic switching circuit sends an electric control signal to the LED lamp circuit, and the LED lamp circuit controls the LED lamp to be turned on or turned off according to the electric control signal.

Further, the brightness detection circuit detects the brightness of the environment, when the brightness of the environment is greater than or equal to a threshold value, the brightness detection circuit outputs a low level, and the signal processing circuit sends a switching signal to the electronic switching circuit to turn off the LED lamp; when the brightness of light is smaller than a threshold value, the radar sensing circuit detects the environment, when the movement of a person is detected, the radar sensing circuit outputs a high level, and the signal processing circuit sends a switching signal to the electronic switching circuit so as to enable the LED lamp to be turned on; when the movement of a person is not detected, the infrared thermopile sensing circuit detects the environment, when the infrared band emitted by the human body is detected, the infrared thermopile sensing circuit outputs a high level, and the signal processing circuit sends a switching signal to the electronic switching circuit so as to enable the LED lamp to be lightened.

Further, when the infrared thermopile sensing circuit does not detect an infrared band emitted by a human body, the infrared thermopile sensing circuit outputs a low level, and the signal processing circuit sends a switching signal to the electronic switching circuit so as to turn off the LED lamp.

Further, the light brightness detection circuit includes: the device comprises a first resistor connected with a power circuit and a light-sensitive resistor connected with the first resistor, wherein the other end of the light-sensitive resistor is connected with GND (ground potential); the base electrode of the first triode is connected with the first resistor and the photosensitive resistor, the emitting electrode of the first triode is connected with the second resistor, the other end of the second resistor is connected with GND, the collecting electrode of the first triode is connected with the third resistor, the other end of the third resistor is connected with the power circuit, the emitting electrode of the first triode is further connected with the signal processing circuit, and two ends of the filter capacitor are respectively connected with the emitting electrode of the first triode and the GND; the photoresistor has a smaller resistance as the brightness increases.

Further, the power switching circuit includes: the fourth resistor is connected with the signal processing circuit, the second triode is connected with the fourth resistor, and the fifth resistor is connected with the second triode; the fourth resistor is connected with the base electrode of the second triode, the emitting electrode of the second triode is connected with GND, the collecting electrode of the second triode is connected with the fifth resistor, and the fifth resistor is connected with the power circuit; the LED lamp further comprises a sixth resistor, a seventh resistor, a first field effect tube and an eighth resistor, wherein two ends of the sixth resistor are respectively connected with a collector of the second triode and a grid of the first field effect tube, two ends of the seventh resistor are respectively connected with a grid of the first field effect tube and a source of the first field effect tube, the source of the first field effect tube is further connected with GND, a drain of the first field effect tube is connected with the eighth resistor, and the eighth resistor is further connected with the LED lamp circuit.

Further, the power supply circuit includes: fuse, piezo-resistor, bridge heap, first electrolytic capacitor, second electrolytic capacitor and first inductance, commercial power process after the fuse with the bridge heap is connected, the piezo-resistor both ends are connected with two inputs of bridge heap respectively, the output one end and the GND of bridge heap are connected, and one end is connected with first inductance, first electrolytic capacitor and second electrolytic capacitor respectively with the both ends of first inductance are connected, the other end and the GND of first electrolytic capacitor and second electrolytic capacitor are connected.

Further, the LED lamp circuit includes: the LED driving circuit comprises an LED driving chip, a fly-wheel diode, a second inductor, a third electrolytic capacitor, a ninth resistor and an LED lamp, wherein the input end of the LED driving chip is connected with the electronic switch circuit, the output end of the LED driving chip is connected with the second inductor, the power supply end of the LED driving chip is connected with the power supply circuit, the anode of the fly-wheel diode is connected with the output end of the LED driving chip, the cathode of the fly-wheel diode is connected with the power supply circuit, the other end of the second inductor is connected with the cathode of the LED lamp, the anode of the LED lamp is connected with the power supply circuit, two ends of the ninth resistor are respectively connected with the power supply circuit and the cathode of the LED lamp, and two ends of the third electrolytic capacitor are respectively connected with the power supply circuit and the cathode of the LED lamp.

Further, the signal processing circuit includes: the control chip, and a voltage-stabilizing tube and a crystal oscillator which are connected with the control chip.

Further, the signal processing circuit includes: the output end of the brightness detection circuit is connected with the first input end of the first AND-gate circuit, the output end of the first OR-gate circuit is connected with the second input end of the first AND-gate circuit, the output end of the radar sensing circuit is connected with the first input end of the first OR-gate circuit, the output end of the infrared thermopile sensing circuit is connected with the first OR-gate circuit, and the output end of the first AND-gate circuit is connected with the electronic switch circuit.

Further, the signal processing circuit includes: the output end of the light brightness detection circuit is connected with the first input end of the second AND gate circuit, the output end of the second OR gate circuit is connected with the second input end of the second AND gate circuit, the output end of the radar sensing circuit is connected with the first input end of the second OR gate circuit, the output end of the radar sensing circuit is also connected with the input end of the third NOT gate circuit, the output end of the third NOT gate circuit is connected with the first input end of the third AND gate circuit, the output end of the infrared thermopile sensing circuit is connected with the second input end of the third AND circuit, the output end of the third AND gate circuit is connected with the second input end of the second OR gate circuit, and the output end of the second AND gate circuit is connected with the electronic switch circuit.

The detection circuit in the embodiment of the invention utilizes the technologies of detecting brightness, detecting whether a person moves or not, detecting whether the person is static or not and multiple states to control the on-off of the LED lamp, has reliable detection, radar induction, thermopile infrared detection and brightness detection, and comprehensively utilizes the three detection technologies to realize the detection of the movement and the static existence of the human body in daytime and at night. In addition, the integration level is high, and the whole detection circuit can be arranged in the lamp.

Drawings

The features and advantages of the present invention will be more clearly understood by reference to the accompanying drawings, which are illustrative and not to be construed as limiting the invention in any way, and in which:

fig. 1 is a schematic view of a signal processing flow of an intelligent lamp circuit in some embodiments of the invention;

FIG. 2 is a schematic view of an overall structural connection of an intelligent lamp circuit in some embodiments of the present invention;

fig. 3 is a schematic view of a chip data processing flow in a signal processing circuit of an intelligent lamp circuit according to some embodiments of the present invention;

FIG. 4 is a schematic diagram of a system architecture connection of an intelligent lamp circuit in further embodiments of the present invention;

FIG. 5 is a schematic connection diagram of a luminance detection circuit of the smart lamp circuit in some embodiments of the invention;

FIG. 6 is a schematic view of the connection of the electronic switching circuit of the intelligent light circuit in some embodiments of the present invention;

FIG. 7 is a schematic connection diagram of a power supply circuit for an intelligent light circuit in some embodiments of the present invention;

FIG. 8 is a schematic view of a connection of an LED lamp circuit of an intelligent lamp circuit in some embodiments of the present invention;

FIG. 9 is a schematic view of the connection of the signal processing circuitry of the intelligent light circuit in some embodiments of the present invention;

FIG. 10 is a schematic view of a connection of another signal processing circuit of the intelligent light circuit in some embodiments of the present invention;

fig. 11 is a schematic connection diagram of another signal processing circuit of the intelligent lamp circuit in some embodiments of the invention.

Detailed Description

In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.

The embodiment of the invention provides a detection lamp circuit with radar induction and infrared thermopile induction, and the detection lamp circuit is combined with luminance brightness detection to realize the control of the on and off of an LED lamp. In some embodiments: as shown in the flowchart of fig. 1, the brightness of the environment is detected by the brightness circuit, when the brightness is enough, the circuit outputs a low level to drive the electronic switch tube, the power supply is cut off, and the LED lamp is turned off. When the brightness is insufficient, the radar detection circuit detects the movement of an object sensed in the range, and when the movement of a person is detected, the radar module outputs a high-level signal to drive the electronic switch tube to supply power to the LED lamp and light the lamp; when no object is sensed to move, the infrared thermopile performs human body static detection on the material in the sensing range, when an infrared band emitted by a human body is detected, the infrared sensing outputs a high level signal to drive the electronic switching tube to supply power to the LED lamp, and the lamp is continuously lightened; when a human body leaves a detection environment, the radar and the thermopile circuit cannot detect the motion or the existence of the human body, the circuit outputs low level, the electronic switching tube is driven, the power supply is disconnected, the LED lamp is powered off, and all the circuit integrated lamps are realized.

As shown in fig. 2, an embodiment of the present invention provides an intelligent lamp circuit, which includes an LED lamp circuit 1, a radar sensing circuit 2, a thermopile infrared sensing circuit 3, a light brightness sensing circuit 4, a signal processing circuit 5, and an electronic switch circuit 6.

The commercial power passes through a rectifying and filtering circuit consisting of a fuse F1, a piezoresistor RV1, a bridge stack BD1, electrolytic capacitors C1 and C2 and an inductor L1 to obtain a direct-current power supply; the LED lamp load is composed of resistors R1, R6, R7 and R8, a chip U1, a freewheeling diode D1 and an LED; the pull-up resistors R13, R13 and R15, the photosensitive device R14, the filter capacitor C4 and the transistor Q3 form a brightness detection circuit; the filter capacitors C4, C5, C6, the crystal oscillator Y1, the resistor R2, the voltage regulator tube ZD1 and the chip U1 form a signal processing circuit; the current limiting resistors R10 and R5, the pull-up resistors R3 and R4, the pull-down resistor R9 and the transistors Q1 and Q2 form an electronic switch circuit to drive the LED lamp load to be turned on or off. The chip U1 may be of the type: KP107XL, chip U2 can adopt model: STM8S003F3P 6.

The commercial power supplies power to the radar module in the figure, the infrared sensing circuit of the thermopile in the figure, the illuminance detection circuit, the signal processing circuit, the electronic switch circuit and the LED lamp through the rectification filter circuit. As shown in fig. 3, when the luminance is sufficient, the resistance of the photosensitive device R14 becomes small, the voltage is divided by the pull-up resistor R13 and the pull-down photosensitive device to obtain a low level driving transistor Q3, Q3 is turned off, the voltage is divided by the pull-up resistor R12 and the pull-down resistor R15 to obtain a low level, the driving signal is sent to the pin of the chip 20 through the filter capacitor C7, the chip signal processing is performed, the radar and infrared detection signal input detection is shielded, and the chip U2 is a single chip and is used for processing the input signal. The low level value is output to a pin 1, the transistor Q2 is turned off, the Q1 obtains a high control level through the pull-up resistor R4, the current-limiting resistor R5 and the pull-down resistor R9, the field-effect tube Q1 is turned on, the control chip U1 of the lamp is a power chip integrated with a built-in field-effect tube, and the voltage of the pin 2 of the control chip can be adjusted to drive the built-in field-effect tube of the chip to be turned on and off so as to achieve the on and off of the lamp. The level of a pin 2 of the chip is pulled down, the chip is closed to output, and the lamp is turned off; when the brightness is insufficient, the impedance of the R14 photosensitive device is increased, voltage is divided by a pull-up resistor R13 and a pull-down photosensitive device to obtain a high level, a transistor Q3 is conducted, a high-level driving signal is sent to a pin 20 of a chip, the chip signal processing is carried out, radar and infrared detection signal input detection is started, when the movement of an object is detected in a detection range, a radar sensing signal outputs the high level to a pin 18 of a chip U2, the high level is output to a pin 1 after the signal processing, the high level is transmitted to a base electrode of the transistor through a current-limiting resistor R10, a triode is driven to be conducted, the R5 potential is pulled to the low level with the conduction of a transistor Q2, the grid level of a field effect transistor is reduced to the low level, a field effect transistor Q1 is closed, and the pin 2; when the human body is detected to be static, the thermopile infrared circuit outputs high level to pins 11 and 12 of a chip U2, the high level is output to pin 1 after signal processing, the high level is transmitted to the base electrode of a transistor through a current limiting resistor R10, a driving triode is switched on, the potential of R5 is pulled to low level along with the switching on of a transistor Q2, the grid level of a field effect tube is reduced to low level, the field effect tube Q1 is switched off, and a lamp is driven to be turned on due to the high level of pin 2 of the chip U1; when the brightness is low, no moving object or human body is detected, the chip U2 outputs a low level value to the pin 1 all the time, the transistor Q2 is turned off, the transistor Q1 obtains a high control level through the pull-up resistor R4, the current-limiting resistor R5 and the pull-down resistor R9, the field effect transistor Q1 is turned on, the level of the pin 2 of the enable pin of the chip U1 is pulled down, the chip is turned off to output, and the lamp is turned off.

The radar sensing circuit and the thermopile infrared circuit in the embodiment of the invention adopt the existing integrated modules sold in the market.

The circuit in the embodiment of the invention utilizes the technologies of detecting the brightness, detecting whether a person moves and detecting whether the person is static but has various states to control the on and off of the LED lamp, has reliable detection, radar induction, thermopile infrared detection and brightness detection, and comprehensively utilizes the three detection technologies to realize the detection of the movement and the static existence of the human body in daytime and at night. In addition, the integration level is high, and the whole detection circuit can be arranged in the lamp.

In another embodiment of the present invention, as shown in fig. 4, an intelligent lamp circuit is provided, which includes a light brightness detection circuit 110, a radar sensing circuit 120, an infrared thermopile sensing circuit 130, a signal processing circuit 140, an electronic switch circuit 150, an LED lamp circuit 160, and a power circuit 170;

the power circuit 170 is connected with the brightness detection circuit 110, the radar sensing circuit 120, the infrared thermopile sensing circuit 130, the signal processing circuit 140, the electronic switch circuit 150 and the LED lamp circuit 160 for supplying power;

the brightness detection circuit 110, the radar sensing circuit 120 and the infrared thermopile sensing circuit 130 are connected with the input end of the signal processing circuit 140; the input end of the electronic switch circuit 150 is connected with the output end of the signal processing circuit 140, and the output end of the electronic switch circuit 150 is connected with the input end of the LED lamp circuit 160;

the signal processing circuit 140 receives output signals of the brightness detection circuit 110, the radar sensing circuit 120, and the infrared thermopile sensing circuit 130, and sends a switching signal to the electronic switching circuit 150, so that the electronic switching circuit 150 sends an electrical control signal to the LED lamp circuit 160, and the LED lamp circuit 160 controls the LED lamp 161 to be turned on or turned off according to the electrical control signal.

Different modules adopt different signal indication corresponding information, and generally, when judging that luminance is less than the threshold value, intelligent lamps and lanterns circuit further judges whether someone passes through, if someone passes through control lamp and lights, if do not detect the people motion, but detect someone's infrared light, then also control the lamp and light.

Further, the brightness detection circuit 110 detects the brightness of the environment, when the brightness of the light is greater than or equal to a threshold value, the brightness detection circuit 110 outputs a low level, and the signal processing circuit 140 sends a switching signal to the electronic switching circuit 150, so that the LED lamp 161 is turned off; when the light brightness is smaller than the threshold value, the radar sensing circuit 120 detects the environment, when it is detected that a person moves, the radar sensing circuit 120 outputs a high level, and the signal processing circuit 140 sends a switching signal to the electronic switching circuit 150, so that the LED lamp 161 is turned on; when the movement of a person is not detected, the infrared thermopile sensing circuit 130 detects the environment, when an infrared band emitted by the human body is detected, the infrared thermopile sensing circuit 130 outputs a high level, and the signal processing circuit 140 sends a switching signal to the electronic switching circuit 150, so that the LED lamp 161 is turned on.

Further, when the infrared thermopile sensing circuit 130 does not detect an infrared band emitted by a human body, the infrared thermopile sensing circuit 130 outputs a low level, and the signal processing circuit 140 sends a switching signal to the electronic switching circuit 150, so that the LED lamp 161 is turned off.

As shown in fig. 5, the light brightness detection circuit 110 includes: a first resistor 111 connected with a power supply circuit 170, a light-sensitive resistor 112 connected with the first resistor 111, and the other end of the light-sensitive resistor 112 is connected with GND; the circuit further comprises a second resistor 113, a first triode 114, a third resistor 115 and a filter capacitor 116, wherein the base of the first triode 114 is connected with the first resistor 111 and the photoresistor 112, the emitter of the first triode 114 is connected with the second resistor 113, the other end of the second resistor 113 is connected with GND, the collector of the first triode 114 is connected with the third resistor 115, the other end of the third resistor 115 is connected with the power circuit 170, the emitter of the first triode 114 is further connected with the signal processing circuit 140, and two ends of the filter capacitor 116 are respectively connected with the emitter of the first triode 114 and GND; as the brightness of the photo resistor 112 increases, the resistance decreases, the voltage at the base of the first transistor 114 decreases, the first transistor 114 is turned off, the voltage at the two ends of the second resistor 113 is low, and the optical two-end detection circuit 110 outputs a low level.

Further, as shown in fig. 6, the power switching circuit 150 includes: a fourth resistor 151 connected to the signal processing circuit 140, a second transistor 152 connected to the fourth resistor 151, and a fifth resistor 153 connected to the second transistor 152; the fourth resistor 151 is connected to the base of the second transistor 152, the emitter of the second transistor 152 is connected to GND, the collector of the second transistor 152 is connected to the fifth resistor 153, and the fifth resistor 153 is connected to the power circuit 170; the LED lamp further comprises a sixth resistor 155, a seventh resistor 156, a first field effect transistor 157 and an eighth resistor 158, two ends of the sixth resistor 155 are respectively connected with the collector of the second triode 152 and the gate of the first field effect transistor 157, two ends of the seventh resistor 156 are respectively connected with the gate of the first field effect transistor 157 and the source of the first field effect transistor 157, the source of the first field effect transistor 157 is further connected with GND, the drain of the first field effect transistor 157 is connected with the eighth resistor 158, and the eighth resistor 158 is further connected with the LED lamp circuit 160; when the signal processing circuit 140 outputs a high level to the fourth resistor 151, the second transistor 152 is turned on, and the first fet 157 is turned off; when the signal processing circuit 140 outputs a low level to the fourth resistor 151, the second transistor 152 is turned off, and the first fet 157 is turned on.

Further, as shown in fig. 7, the power supply circuit 170 includes: fuse 171, piezo-resistor 172, bridge 173, first electrolytic capacitor 174, second electrolytic capacitor 175 and first inductance 176, the commercial power pass through fuse 171 later with bridge 173 is connected, piezo-resistor 172 both ends are connected with two input terminals of bridge 173 respectively, bridge 173's output end one end is connected with GND, and one end is connected with first inductance 176, first electrolytic capacitor 174 and second electrolytic capacitor 175 respectively with the both ends of first inductance 176 are connected, the other end of first electrolytic capacitor 174 and second electrolytic capacitor 175 is connected with GND.

Further, as shown in fig. 8, the LED lamp circuit 160 includes: an LED driving chip 162, a freewheeling diode 163, a second inductor 164, a third electrolytic capacitor 165, a ninth resistor 166 and an LED lamp 161, the input terminal of the LED driving chip 162 is connected to the electronic switch circuit 150, the output end of the LED driving chip 162 is connected to the second inductor 164, the power end of the LED driving chip 162 is connected to the power circuit 170, the anode of the freewheel diode 163 is connected to the output terminal of the LED driving chip 162, the cathode of the freewheeling diode 163 is connected to the power supply circuit 170, the other end of the second inductor 164 is connected to the cathode of the LED lamp 161, the anode of the LED lamp 161 is connected to the power circuit 170, the two ends of the ninth resistor 166 are respectively connected to the power circuit 170 and the cathode of the LED lamp 161, both ends of the third electrolytic capacitor 165 are connected to the power circuit 170 and the cathode of the LED lamp 161, respectively. The input end voltage of the LED driving chip 162 is low, the LED lamp 161 is off, the voltage is high, and the LED lamp 162 is on. The LED driving chip 162 may have the following chip types: KP107 XL.

In the embodiment of the present invention, the signal processing circuit 140 may be implemented by a control chip, for example, a single chip, an ARM, an AVR, an MCU, etc., the operation logic is as shown in fig. 3, in order to work with the chip, a peripheral circuit is further provided, specifically, as shown in fig. 9, the signal processing circuit 140 includes: the control circuit comprises a control chip 141, a voltage stabilizing tube 142 and a crystal oscillator 143, wherein the voltage stabilizing tube 142 and the crystal oscillator 143 are connected with the control chip 141, the control chip 141 is further connected with a power supply circuit 170, the crystal oscillator 143 provides clock signals for the control chip 141, and the voltage stabilizing tube 142 stabilizes power supply voltage input to the control chip 141. The types of the control chip 141 are as follows: STM8S003F3P 6.

Further, the signal processing circuit 140 in the embodiment of the present invention may also be implemented in a pure circuit manner, for example, may be implemented by using a gate circuit, and in particular, in some embodiments of the present invention, as shown in fig. 10, the signal processing circuit 240 includes: the output end of the brightness detection circuit 110 is connected with the first input end of the first and circuit 241, the output end of the first or circuit 242 is connected with the second input end of the first and circuit 243, the output end of the radar sensing circuit 120 is connected with the first input end of the first or circuit 242, the output end of the infrared thermopile sensing circuit 130 is connected with the first or circuit 242, the output end of the first and circuit 234 is connected with the electronic switch circuit 150, when the brightness is sufficient, the brightness detection circuit 110 outputs a low level, and after the brightness passes through the first and circuit 242, the signal processing circuit 240 outputs a low level to drive the LED lamp to be turned off; when the light brightness is insufficient, the light brightness detection circuit 110 outputs a high level, and inputs the high level into the first and-gate circuit 241, and when people move, the radar sensing circuit 120 outputs a high level, so that the first or-gate circuit 242 becomes a high level, and finally the first and-gate circuit 241 outputs a high level, and drives the LED lamp to light; when the light brightness is not enough and the infrared thermopile sensing circuit 130 detects a human infrared band, a high level is output, so that the first or gate circuit 242 outputs a high level, and finally the first and gate circuit 241 outputs a high level to drive the LED lamp to light.

Further, in the embodiments of the present invention, the priority order of infrared and radar detection is defined, and specifically, as shown in fig. 11, in some embodiments of the present invention, the signal processing circuit 340 includes: a second and-gate circuit 341, a second or-gate circuit 342, a third and-gate circuit 343, and a third not-gate circuit 345, wherein the output terminal of the luminance detection circuit 110 is connected to the first input terminal of the second and-gate circuit 341, the output terminal of the second or-gate circuit 342 is connected to the second input terminal of the second and-gate circuit 341, the output terminal of the radar sensing circuit 120 is connected to the first input terminal of the second or-gate circuit 342, the output terminal of the radar sensing circuit 120 is further connected to the input terminal of the third not-gate circuit 345, the output terminal of the third not-gate circuit 345 is connected to the first input terminal of the third and-gate circuit 343, the output terminal of the infrared thermopile sensing circuit 130 is connected to the second input terminal of the third and-gate circuit 343, and the output terminal of the third and-gate circuit 343 is connected to the second input terminal of the second or-gate circuit 342, the output end of the second and circuit 341 is connected to the electronic switch circuit 150; when the luminance brightness is sufficient, the luminance brightness detection circuit 110 outputs a low level, and after passing through the second and gate 341, the signal processing circuit 340 outputs a low level to turn off the LED lamp; when the luminance is insufficient, the luminance detection circuit 110 outputs a high level to the second and-gate circuit 341, and when a person moves, the radar sensing circuit 120 outputs a high level, so that the second or-gate circuit 342 becomes a high level, and finally the second and-gate circuit 341 outputs a high level to drive the LED lamp to light; when the light brightness is not enough and the infrared thermopile sensing circuit 130 detects a human infrared band, a high level is output to the third and-gate circuit 343, and meanwhile, the radar sensing circuit 120 does not sense human activities and outputs a low level, so that the third not-gate circuit 345 outputs a high level, the third and-gate circuit 343 outputs a high level, and finally, the second and-gate circuit 341 outputs a high level to drive the LED lamp to light. In this embodiment, after the radar sensing circuit 120 outputs a high level, the infrared detection result is masked, and hierarchical control is adopted.

The detection circuit in the embodiment of the invention utilizes the technologies of detecting brightness, detecting whether a person moves or not, detecting whether the person is static or not and multiple states to control the on-off of the LED lamp, has reliable detection, radar induction, thermopile infrared detection and brightness detection, and comprehensively utilizes the three detection technologies to realize the detection of the movement and the static existence of the human body in daytime and at night. In addition, the integration level is high, and the whole detection circuit can be arranged in the lamp. The gate circuit is used for building the signal processing circuit, so that the operation is reliable, and the signal processing circuit can be used after being electrified.

In the present invention, the terms "first", "second", and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. The term "plurality" means two or more unless expressly limited otherwise.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent lamp circuit is characterized by comprising a brightness detection circuit, a radar sensing circuit, an infrared thermopile sensing circuit, a signal processing circuit, an electronic switch circuit, an LED lamp circuit and a power supply circuit;

2. The intelligent lamp circuit according to claim 1, wherein the brightness detection circuit detects brightness of an environment, when the brightness of the environment is greater than or equal to a threshold value, the brightness detection circuit outputs a low level, and the signal processing circuit sends a switching signal to the electronic switching circuit to turn off the LED lamp;

when the brightness of light is smaller than a threshold value, the radar sensing circuit detects the environment, when the movement of a person is detected, the radar sensing circuit outputs a high level, and the signal processing circuit sends a switching signal to the electronic switching circuit so as to enable the LED lamp to be turned on; when the movement of a person is not detected, the infrared thermopile sensing circuit detects the environment, when the infrared band emitted by the human body is detected, the infrared thermopile sensing circuit outputs a high level, and the signal processing circuit sends a switching signal to the electronic switching circuit so as to enable the LED lamp to be lightened.

3. The intelligent lamp circuit according to claim 2, wherein when the infrared thermopile sensing circuit does not detect an infrared band emitted from a human body, the infrared thermopile sensing circuit outputs a low level, and the signal processing circuit sends a switching signal to the electronic switching circuit to turn off the LED lamp.

4. The intelligent lamp circuit according to any one of claims 1 to 3, wherein the light brightness detection circuit comprises: the device comprises a first resistor connected with a power circuit and a light-sensitive resistor connected with the first resistor, wherein the other end of the light-sensitive resistor is connected with GND (ground potential); the base electrode of the first triode is connected with the first resistor and the photosensitive resistor, the emitting electrode of the first triode is connected with the second resistor, the other end of the second resistor is connected with GND, the collecting electrode of the first triode is connected with the third resistor, the other end of the third resistor is connected with the power circuit, the emitting electrode of the first triode is further connected with the signal processing circuit, and two ends of the filter capacitor are respectively connected with the emitting electrode of the first triode and the GND; the photoresistor has a smaller resistance as the brightness increases.

5. The intelligent lamp circuit according to any one of claims 1 to 3, wherein the power switch circuit comprises: the fourth resistor is connected with the signal processing circuit, the second triode is connected with the fourth resistor, and the fifth resistor is connected with the second triode; the fourth resistor is connected with the base electrode of the second triode, the emitting electrode of the second triode is connected with GND, the collecting electrode of the second triode is connected with the fifth resistor, and the fifth resistor is connected with the power circuit; the LED lamp further comprises a sixth resistor, a seventh resistor, a first field effect tube and an eighth resistor, wherein two ends of the sixth resistor are respectively connected with a collector of the second triode and a grid of the first field effect tube, two ends of the seventh resistor are respectively connected with a grid of the first field effect tube and a source of the first field effect tube, the source of the first field effect tube is further connected with GND, a drain of the first field effect tube is connected with the eighth resistor, and the eighth resistor is further connected with the LED lamp circuit.

6. The intelligent lamp circuit according to any one of claims 1-3, wherein the power supply circuit comprises: fuse, piezo-resistor, bridge heap, first electrolytic capacitor, second electrolytic capacitor and first inductance, commercial power process after the fuse with the bridge heap is connected, the piezo-resistor both ends are connected with two inputs of bridge heap respectively, the output one end and the GND of bridge heap are connected, and one end is connected with first inductance, first electrolytic capacitor and second electrolytic capacitor respectively with the both ends of first inductance are connected, the other end and the GND of first electrolytic capacitor and second electrolytic capacitor are connected.

7. The intelligent lamp circuit according to any one of claims 1 to 3, wherein the LED lamp circuit comprises: the LED driving circuit comprises an LED driving chip, a fly-wheel diode, a second inductor, a third electrolytic capacitor, a ninth resistor and an LED lamp, wherein the input end of the LED driving chip is connected with the electronic switch circuit, the output end of the LED driving chip is connected with the second inductor, the power supply end of the LED driving chip is connected with the power supply circuit, the anode of the fly-wheel diode is connected with the output end of the LED driving chip, the cathode of the fly-wheel diode is connected with the power supply circuit, the other end of the second inductor is connected with the cathode of the LED lamp, the anode of the LED lamp is connected with the power supply circuit, two ends of the ninth resistor are respectively connected with the power supply circuit and the cathode of the LED lamp, and two ends of the third electrolytic capacitor are respectively connected with the power supply circuit and the cathode of the LED lamp.

8. The intelligent lamp circuit according to any one of claims 1 to 3, wherein the signal processing circuit comprises: the control chip, and a voltage-stabilizing tube and a crystal oscillator which are connected with the control chip.

9. The intelligent lamp circuit according to any one of claims 1 to 3, wherein the signal processing circuit comprises: the output end of the brightness detection circuit is connected with the first input end of the first AND-gate circuit, the output end of the first OR-gate circuit is connected with the second input end of the first AND-gate circuit, the output end of the radar sensing circuit is connected with the first input end of the first OR-gate circuit, the output end of the infrared thermopile sensing circuit is connected with the first OR-gate circuit, and the output end of the first AND-gate circuit is connected with the electronic switch circuit.

10. The intelligent lamp circuit according to any one of claims 1 to 3, wherein the signal processing circuit comprises: the output end of the light brightness detection circuit is connected with the first input end of the second AND gate circuit, the output end of the second OR gate circuit is connected with the second input end of the second AND gate circuit, the output end of the radar sensing circuit is connected with the first input end of the second OR gate circuit, the output end of the radar sensing circuit is also connected with the input end of the third NOT gate circuit, the output end of the third NOT gate circuit is connected with the first input end of the third AND gate circuit, the output end of the infrared thermopile sensing circuit is connected with the second input end of the third AND circuit, the output end of the third AND gate circuit is connected with the second input end of the second OR gate circuit, and the output end of the second AND gate circuit is connected with the electronic switch circuit.