Human body sensor control circuit and human body sensor

Abstract

The utility model discloses a human body sensor control circuit and a human body sensor, and relates to the technical field of human body sensors. The human body sensor control circuit comprises a lighting drive circuit, an alarm drive circuit, a sound wave drive circuit, a trigger circuit, an infrared sensing circuit, a light intensity detection circuit and a control circuit. When the trigger circuit is triggered by a user, a corresponding trigger signal is output. The infrared induction circuit can detect human body infrared information of the environment and output corresponding infrared induction signals. The light intensity detection circuit detects the intensity of ambient light and outputs a corresponding light detection signal. The control circuit controls the illumination driving circuit to drive the illumination of the illumination assembly, controls the alarm driving circuit to drive the alarm assembly to give an alarm, and controls the sound wave driving circuit to drive the sound wave assembly to give out ultrasonic waves for expelling insects according to the trigger signal, the infrared induction signal and the light detection signal. The utility model aims to solve the problems that the conventional human body sensor has a single function and cannot adapt to various use scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of human body sensors, in particular to a human body sensor control circuit and a human body sensor. Background Art

[0002] At present, human body sensor technology is widely used in the fields of home automation, security monitoring and energy-saving lighting. For example, human body sensors can be used in human body sensor lights to illuminate when a human body is detected approaching, or in human body sensor alarms to sound an alarm when a human body is detected approaching.

[0003] However, existing human body sensors have relatively single functions and cannot adapt to a variety of usage scenarios. Utility Model Content

[0004] The main purpose of the utility model is to provide a human body sensor, aiming to solve the problem that the existing human body sensors have relatively single functions and cannot adapt to a variety of usage scenarios.

[0005] To achieve the above object, the utility model provides a human body sensor control circuit, wherein the human body sensor comprises a lighting component, a sound wave component and an alarm component, and the human body sensor control circuit comprises:

[0006] A lighting driving circuit, wherein the lighting driving circuit is connected to the lighting assembly;

[0007] An alarm driving circuit, the alarm driving circuit is connected to the alarm component;

[0008] an acoustic wave driving circuit, the acoustic wave driving circuit being connected to the acoustic wave component;

[0009] A trigger circuit, wherein the trigger circuit is used to output a corresponding trigger signal when triggered by a user;

[0010] Infrared sensing circuit, the infrared sensing circuit is used to detect human infrared information in the environment and output corresponding infrared sensing signals;

[0011] A light intensity detection circuit, which is used to detect the ambient light intensity and output a corresponding light detection signal;

[0012] A control circuit, wherein the control circuit is respectively connected to the lighting drive circuit, the alarm drive circuit, the sound wave drive circuit, the trigger circuit, the infrared sensing circuit and the light intensity detection circuit;

[0013] The control circuit is used to control the lighting drive circuit to drive the lighting component to illuminate, control the alarm drive circuit to drive the alarm component to sound an alarm, and control the sound wave drive circuit to drive the sound wave component to emit ultrasonic waves according to the trigger signal, the infrared sensing signal and the light detection signal.

[0014] In one embodiment, the human body sensor control circuit further includes:

[0015] A battery, wherein the battery is respectively connected to the lighting drive circuit, the alarm drive circuit, the sound wave drive circuit, the infrared sensing circuit and the light intensity detection circuit;

[0016] A charging management circuit is connected to the external power supply voltage input terminal and the battery respectively, and is used to convert the external power supply voltage into a battery voltage output.

[0017] In one embodiment, the light intensity detection circuit includes a phototransistor, a first resistor and a first capacitor; one end of the phototransistor is connected to the power input end of the light intensity detection circuit, the other end of the phototransistor, one end of the first resistor, and one end of the first capacitor are connected to the control circuit, and the other end of the first resistor and the other end of the first capacitor are grounded.

[0018] In one embodiment, the infrared sensing circuit includes an infrared sensor and a second capacitor; the first pin of the infrared sensor is connected to the power input end of the infrared sensing circuit; the second pin of the infrared sensor and one end of the second capacitor are connected to the control circuit; the third pin of the infrared sensor and the other end of the second capacitor are grounded.

[0019] In one embodiment, the lighting assembly includes a cold light lamp and a warm light lamp, and the lighting driving circuit includes:

[0020] A cold light lamp driving circuit, the cold light lamp driving circuit is connected to the cold light lamp; the cold light lamp driving circuit is used to drive the cold light lamp to emit light;

[0021] A warm light lamp driving circuit, the warm light lamp driving circuit is connected to the warm light lamp; the warm light lamp driving circuit is used to drive the warm light lamp to emit light.

[0022] In one embodiment, the cold light lamp driving circuit includes a second resistor, a third resistor, a fourth resistor, a fifth resistor and a first MOS tube; one end of the fourth resistor and one end of the fifth resistor are connected to the cold light lamp; the other end of the fourth resistor and the other end of the fifth resistor are connected to the drain of the first MOS tube; the gate of the first MOS tube and one end of the second resistor are connected to one end of the third resistor; the other end of the second resistor is connected to the control circuit; the source of the first MOS tube and the other end of the third resistor are grounded;

[0023] The warm light lamp driving circuit includes a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor and a second MOS tube; one end of the eighth resistor and one end of the ninth resistor are connected to the warm light lamp; the other end of the eighth resistor and the other end of the ninth resistor are connected to the drain of the second MOS tube; the gate of the second MOS tube, one end of the sixth resistor and one end of the seventh resistor are connected; the other end of the sixth resistor is connected to the control circuit; the source of the second MOS tube and the other end of the seventh resistor are grounded.

[0024] In one embodiment, the alarm component is a first passive buzzer, and the alarm driving circuit includes a tenth resistor, an eleventh resistor, a first inductor and a first transistor;

[0025] Among them, one end of the first inductor is connected to the power input end of the alarm driving circuit; the other end of the first inductor and the collector of the first transistor are connected to the first end of the first passive buzzer; the base of the first transistor and one end of the tenth resistor are connected to one end of the eleventh resistor; the other end of the tenth resistor is connected to the control circuit; the emitter of the first transistor, the other end of the eleventh resistor and the second end of the first passive buzzer are grounded.

[0026] In one embodiment, the sound wave component is a second passive buzzer, and the sound wave driving circuit includes a twelfth resistor, a thirteenth resistor, a second inductor and a second transistor;

[0027] Among them, one end of the second inductor is connected to the power input end of the sound wave driving circuit; the other end of the second inductor and the collector of the second transistor are connected to the first end of the second passive buzzer; the base of the second transistor and one end of the twelfth resistor are connected to one end of the thirteenth resistor; the other end of the twelfth resistor is connected to the control circuit; the emitter of the second transistor, the other end of the thirteenth resistor and the second end of the second passive buzzer are grounded.

[0028] In one embodiment, the charging management circuit includes a charging interface, a charging chip, a red light emitting diode, a green light emitting diode, a third capacitor, a fourth capacitor, a fourteenth resistor and a fifteenth resistor;

[0029] Among them, one end of the fourteenth resistor, the CE pin of the charging chip, and one end of the sixteenth resistor are connected to the charging interface; the other end of the fourteenth resistor and one end of the third capacitor are connected to the VCC pin of the charging chip; the other end of the third capacitor and one end of the fifteenth resistor are connected to the TEMP pin of the charging chip; the PROG pin of the charging chip is connected to the other end of the fifteenth resistor; the CHRG pin of the charging chip is connected to the cathode of the red light-emitting diode; the STDBY pin of the charging chip is connected to the cathode of the green light-emitting diode; the anode of the red light-emitting diode and the anode of the green light-emitting diode are connected to the other end of the sixteenth resistor; the BAT pin of the charging chip and one end of the fourth capacitor are connected to the positive electrode of the battery; the GND pin of the charging chip and the other end of the fourth capacitor are grounded to the negative electrode of the battery.

[0030] The utility model also provides a human body sensor, which comprises the human body sensor control circuit as described above.

[0031] The technical solution of the utility model adopts a human body sensor control circuit, including a lighting drive circuit, an alarm drive circuit, a sound wave drive circuit, a trigger circuit, an infrared sensing circuit, a light intensity detection circuit and a control circuit. Among them, the trigger circuit outputs a corresponding trigger signal when triggered by the user. The infrared sensing circuit can detect the infrared information of the human body in the environment and output a corresponding infrared sensing signal. The light intensity detection circuit can detect the intensity of ambient light and output a corresponding light detection signal. The control circuit can determine the working mode and working conditions of the lighting drive circuit, the alarm drive circuit and the sound wave drive circuit according to the trigger signal. The control circuit can also determine whether there is anyone nearby according to the voltage value of the infrared sensing signal, and determine whether it is currently daytime or night according to the voltage value of the light detection signal. Then the control circuit can control the lighting drive circuit, the alarm drive circuit and the sound wave drive circuit to enter the corresponding working mode to work according to whether there is anyone nearby and whether it is currently daytime or night. For example, in the first lighting mode, when it is dark and there are people nearby, the lighting driving circuit is controlled to drive the lighting component to illuminate; in the first alarm mode, when there are people nearby, the alarm driving circuit is controlled to drive the alarm component to sound an alarm; in the first driving mode, the sound wave driving circuit is controlled to drive the sound wave component to emit ultrasonic waves to repel insects. In this way, the utility model has multiple working modes, and can determine whether there are people nearby according to infrared sensing signals, and determine whether it is daytime or night according to light detection signals, and enter different working modes according to different scene controls, which can be applied to multiple scenes. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of the structure of an embodiment of a human body sensor control circuit provided by the utility model;

[0034] Figure 2 An electronic circuit diagram of a light intensity detection circuit of an embodiment of a human body sensor control circuit provided by the utility model;

[0035] Figure 3 An electronic circuit diagram of an infrared sensing circuit of an embodiment of a human body sensor control circuit provided by the utility model;

[0036] Figure 4 An electronic circuit diagram of a lighting drive circuit of an embodiment of a human body sensor control circuit provided by the utility model;

[0037] Figure 5 An electronic circuit diagram of an alarm drive circuit of an embodiment of a human body sensor control circuit provided by the utility model;

[0038] Figure 6 An electronic circuit diagram of a sound wave driving circuit of an embodiment of a human body sensor control circuit provided by the utility model;

[0039] Figure 7 An electronic circuit diagram of a charging management circuit of an embodiment of a human body sensor control circuit provided by the utility model;

[0040] Figure 8 An electronic circuit diagram of another embodiment of the human body sensor control circuit provided by the utility model;

[0041] Fig. 9 This is a product diagram of the human body sensor provided by the utility model.

[0042] Description of Figure Numbers:

[0043]

[0044] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0046] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0047] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0048] The existing human body sensors have relatively single functions, resulting in poor adaptability in different environments.

[0049] The utility model provides a human body sensor control circuit.

[0050] See also Figure 1 In one embodiment of the utility model, the human body sensor includes a lighting component, a sound wave component and an alarm component, and the human body sensor control circuit includes:

[0051] A lighting driving circuit 10, the lighting driving circuit 10 is connected to the lighting component;

[0052] It should be noted that the lighting component can be an LED lamp, and the lighting driving circuit 10 can be used to drive the LED lamp to light up / off, and adjust the power and color temperature of the light.

[0053] An alarm driving circuit 20, the alarm driving circuit 20 is connected to the alarm component;

[0054] It should be noted that the alarm component can be a buzzer, and the alarm driving circuit 20 can be used to drive the buzzer to make a sound.

[0055] The acoustic wave driving circuit 30 is connected to the acoustic wave component;

[0056] It should be noted that the sound wave component can be a passive buzzer, and the sound wave driving circuit 30 can be used to drive the passive buzzer to emit ultrasonic waves to repel insects, and to adjust the emission frequency of the ultrasonic waves.

[0057] A trigger circuit 40, the trigger circuit 40 is used to output a corresponding trigger signal when triggered by a user;

[0058] Please note that Figure 8 The trigger circuit 40 may include a lighting button K1, an alarm button K2 and an insect repellent button K3, and the control circuit 70 may detect different instructions input by the user by detecting the number of times or time each button is pressed.

[0059] Infrared sensing circuit 50, the infrared sensing circuit 50 is used to detect infrared information of human body in the environment and output corresponding infrared sensing signal;

[0060] It should be noted that the infrared sensing circuit 50 may include a human infrared sensor of model D220AX and a Fresnel lens of model 7709-8, the maximum sensing distance may reach 12 meters, and the sensing distance may be adjusted.

[0061] A light intensity detection circuit 60, the light intensity detection circuit 60 is used to detect the ambient light intensity and output a corresponding light detection signal;

[0062] It should be noted that the light intensity detection circuit 60 may include a phototransistor CDS1 of model TS13, or include a photoresistor, and it can be determined whether it is daytime or night based on the voltage output by the light intensity detection circuit 60 .

[0063] A control circuit 70, wherein the control circuit 70 is respectively connected to the lighting drive circuit 10, the alarm drive circuit 20, the sound wave drive circuit 30, the trigger circuit 40, the infrared sensing circuit 50 and the light intensity detection circuit 60;

[0064] Please note that Figure 8 The control circuit 70 may include a control chip U2, a fifth capacitor C5 and a sixth capacitor C6. The control chip U2 is connected to each circuit through a plurality of pins.

[0065] The control circuit 70 is used to control the lighting driving circuit 10 to drive the lighting component to illuminate, control the alarm driving circuit 20 to drive the alarm component to sound an alarm, and control the sound wave driving circuit 30 to drive the sound wave component to emit ultrasonic waves according to the trigger signal, infrared sensing signal and light detection signal.

[0066] In this embodiment, four lighting working modes can be included. In the first lighting mode, when the control circuit 70 determines that it is in the dark and there are people nearby according to the infrared sensing signal and the light detection signal, the light is controlled to be turned on; when it is in the dark and there are no people nearby, the light is controlled to be turned off; when it is in the dark and there are no people nearby, or in the daytime, the light is controlled to be turned off. In the second lighting mode, when the control circuit 70 determines that it is in the dark and there are people nearby according to the infrared sensing signal and the light detection signal, the light is controlled to be turned on; when it is in the dark and there are no people nearby, the light is controlled to be slightly bright, which can be specifically achieved by controlling to reduce the driving current output by the lighting driving circuit 10; when it is in the daytime, the light is controlled to be turned off. In the third lighting mode, when the control circuit 70 determines that it is in the dark according to the light detection signal, the light is controlled to be turned on; when it is in the daytime, the light is controlled to be turned off. In the fourth lighting mode, the light is controlled to be turned off. In this embodiment, when the lighting button K1 is clicked, the working mode can be switched, and the "first lighting mode-second lighting mode-third lighting mode-fourth lighting mode" is cycled until the appropriate lighting mode is selected. When the lighting button K1 is double-clicked, the color temperature can be switched from cold light to warm light and then to cold light, and so on. The specific number of color temperature gears can be set according to needs. When the lighting button K1 is long pressed, the brightness adjustment mode is entered. In this way, this embodiment includes a variety of lighting modes, which can be applied to indoor lighting scenes such as bedside, porch, toilet, wardrobe and desk.

[0067] In the present embodiment, four insect repellent modes may be included. In the first insect repellent mode, the passive buzzer repeats high-frequency operation for 5 seconds, rests for 20 seconds, and works in a cycle. In the second insect repellent mode, the passive buzzer performs strong insect repellent, and the passive buzzer is always in a high-frequency working state. In the second insect repellent mode, the passive buzzer does not work. In the present embodiment, when the insect repellent button K3 is clicked, the working mode can be switched, and the "first insect repellent mode-second insect repellent mode-third insect repellent mode" is cycled until a suitable insect repellent mode is selected. When the insect repellent button K3 is double-clicked, the ultrasonic frequency can be switched, and the specific number of ultrasonic gears can be set according to demand. In this way, the present embodiment includes a variety of driving modes, which is suitable for indoor scenes of expelling cockroaches and mice, and is also suitable for outdoor scenes of expelling insects in the woods.

[0068] In this embodiment, three alarm modes can be included. In the first alarm mode, when the control circuit 70 determines that there is someone nearby based on the infrared sensing signal, the buzzer sounds, and when there is no one, it does not sound. In the second alarm mode, the buzzer keeps ringing. In the third alarm mode, the buzzer does not sound. In this embodiment, when the alarm button K2 is clicked, the working mode can be switched, and the "first alarm mode-second alarm mode-third alarm mode" is cycled until the appropriate alarm mode is selected. When the alarm button K2 is long pressed, the mode of adjusting the alarm volume is entered. In this way, this embodiment can be set at an entrance or exit such as a door or window, and an alarm is sounded when someone comes in to warn the intruder.

[0069] In this embodiment, when the trigger circuit 40 is triggered by the user, it outputs a corresponding trigger signal and selects to enter different working modes. The infrared sensing circuit 50 can detect the infrared information of the human body in the environment and output a corresponding infrared sensing signal. The light intensity detection circuit 60 can detect the ambient light intensity and output a corresponding light detection signal. The control circuit 70 can determine whether there is someone nearby according to the voltage value of the infrared sensing signal, and determine whether it is currently daytime or nighttime according to the voltage value of the light detection signal. Then the control circuit 70 can control the operation of the lighting drive circuit 10, the alarm drive circuit 20 and the sound wave drive circuit 30 according to the above information in different modes. For example, in the first lighting mode, when it is in the dark and there are people nearby, the lighting drive circuit 10 is controlled to drive the lighting component to illuminate; in the first alarm mode, when there are people nearby, the alarm drive circuit 20 is controlled to drive the alarm component to sound an alarm; in the first drive mode, the sound wave drive circuit 30 is controlled to drive the sound wave component to emit ultrasonic waves to repel insects. In this way, this embodiment has multiple working modes, and can determine whether there are people nearby according to the infrared sensing signal, and determine whether it is currently daytime or night according to the light detection signal, and can be applied to multiple scenarios. Compared with the existing technology, it has more functions and is more adaptable in different environments.

[0070] In the present invention, when the trigger circuit 40 is triggered by the user, it outputs a corresponding trigger signal and selects to enter different working modes. The infrared sensing circuit 50 can detect the infrared information of the human body in the environment and output a corresponding infrared sensing signal. The light intensity detection circuit 60 can detect the ambient light intensity and output a corresponding light detection signal. The control circuit 70 can determine whether there is someone nearby according to the voltage value of the infrared sensing signal, and determine whether it is currently daytime or nighttime according to the voltage value of the light detection signal. Then the control circuit 70 can control the operation of the lighting drive circuit 10, the alarm drive circuit 20 and the sound wave drive circuit 30 according to the above information in different modes. For example, in the first lighting mode, when it is in the dark and there are people nearby, the lighting drive circuit 10 is controlled to drive the lighting component to illuminate; in the first alarm mode, when there are people nearby, the alarm drive circuit 20 is controlled to drive the alarm component to sound an alarm; in the first drive mode, the sound wave drive circuit 30 is controlled to drive the sound wave component to emit ultrasonic waves to repel insects. In this way, the present invention has multiple working modes, and can determine whether there are people nearby according to the infrared sensing signal, and determine whether it is currently daytime or night according to the light detection signal, and can be applied to a variety of scenarios. Compared with the existing technology, it has more functions and is more adaptable in different environments.

[0071] See also Figure 7 In one embodiment of the utility model, the human body sensor control circuit further includes:

[0072] A battery BAT, the battery BAT is respectively connected to the lighting drive circuit 10, the alarm drive circuit 20, the sound wave drive circuit 30, the infrared sensing circuit 50 and the light intensity detection circuit 60;

[0073] The charging management circuit is connected to the external power supply voltage input terminal and the battery BAT respectively, and is used to convert the external power supply voltage into the battery BAT voltage output.

[0074] In this embodiment, the human body sensor can be charged and is no longer limited to being installed in a location with power access. In this way, the human body sensor of this embodiment can be more flexibly arranged in various places without worrying about the wiring of the power cord. In addition, this embodiment can be charged without replacing the battery.

[0075] See also Figure 2 In one embodiment of the utility model, the light intensity detection circuit 60 includes a phototransistor CDS1, a first resistor R1 and a first capacitor C1; one end of the phototransistor CDS1 is connected to the power input end of the light intensity detection circuit 60, the other end of the phototransistor CDS1, one end of the first resistor R1, and one end of the first capacitor C1 are connected to the control circuit 70, and the other end of the first resistor R1 and the other end of the first capacitor C1 are grounded.

[0076] In this embodiment, when the ambient light intensity is different, the voltage output by the phototransistor CDS1 is also different, and the control circuit 70 can judge the current ambient light intensity according to the voltage output by the phototransistor CDS1. For example, when the voltage output by the phototransistor CDS1 to the control circuit 70 is greater than or equal to the preset voltage, it is judged to be night, and the control light is turned on. When the voltage output by the phototransistor CDS1 to the control circuit 70 is less than the preset voltage, it is judged to be daytime, and the control light is turned off.

[0077] See also Figure 3 In one embodiment of the utility model, the infrared sensing circuit 50 includes an infrared sensor PIR1 and a second capacitor C2; a first pin of the infrared sensor PIR1 is connected to a power input terminal of the infrared sensing circuit 50; a second pin of the infrared sensor PIR1 and one end of the second capacitor C2 are connected to a control circuit 70; a third pin of the infrared sensor PIR1 and the other end of the second capacitor C2 are grounded.

[0078] In this embodiment, the infrared sensor PIR1 can effectively detect infrared signals emitted by the human body, and the second capacitor C2 is provided to reduce the interference of external electromagnetic interference on the infrared sensor PIR1.

[0079] See also Figure 4In one embodiment of the present utility model, the lighting assembly includes a cold light LED-C1 and a warm light LED-W1, and the lighting driving circuit 10 includes:

[0080] The cold light lamp driving circuit 11 is connected to the cold light lamp LED-C1; the cold light lamp driving circuit 11 is used to drive the cold light lamp LED-C1 to emit light;

[0081] The warm light lamp driving circuit 12 is connected to the warm light lamp LED-W1; the warm light lamp driving circuit 12 is used to drive the warm light lamp LED-W1 to emit light.

[0082] In this embodiment, the control circuit 70 can output two PWM signals with different duty cycles. The cold light lamp driving circuit 11 can drive the cold light lamp LED-C1 to emit light at a corresponding power according to the PWM signal. The warm light lamp driving circuit 12 can drive the warm light lamp LED-W1 to emit light at a corresponding power according to the PWM signal. The cold light lamp LED-C1 and the warm light lamp LED-W1 can be mixed and adjusted to a comfortable light for lighting.

[0083] See also Figure 4 In one embodiment of the utility model, the cold light lamp driving circuit 11 includes a second resistor R2, a third resistor R3, a fourth resistor R4, a fifth resistor R5 and a first MOS tube; one end of the fourth resistor R4 and one end of the fifth resistor R5 are connected to the cold light lamp LED-C1; the other end of the fourth resistor R4 and the other end of the fifth resistor R5 are connected to the drain of the first MOS tube; the gate of the first MOS tube, one end of the second resistor R2 and one end of the third resistor R3 are connected; the other end of the second resistor R2 is connected to the control circuit 70; the source of the first MOS tube and the other end of the third resistor R3 are grounded;

[0084] The warm light lamp driving circuit 12 includes a sixth resistor R6, a seventh resistor R7, an eighth resistor R8, a ninth resistor R9 and a second MOS tube; one end of the eighth resistor R8 and one end of the ninth resistor R9 are connected to the warm light lamp LED-W1; the other end of the eighth resistor R8 and the other end of the ninth resistor R9 are connected to the drain of the second MOS tube; the gate of the second MOS tube, one end of the sixth resistor R6 and one end of the seventh resistor R7 are connected; the other end of the sixth resistor R6 is connected to the control circuit 70; the source of the second MOS tube and the other end of the seventh resistor R7 are grounded.

[0085] In this embodiment, the control circuit 70 can control the conduction and cutoff of the first NMOS tube by controlling the gate voltage thereof, thereby controlling the power and switch state of the cold light LED-C1. The control circuit 70 can control the conduction and cutoff of the second NMOS tube by controlling the gate voltage thereof, thereby controlling the power and switch state of the warm light LED-W1. The cold light LED-C1 and the warm light LED-W1 can be mixed to provide comfortable lighting.

[0086] See also Figure 5 In one embodiment of the utility model, the alarm component is a first passive buzzer SPK1, and the alarm driving circuit 20 includes a tenth resistor R10, an eleventh resistor R11, a first inductor L1 and a first transistor Q1;

[0087] Among them, one end of the first inductor L1 is connected to the power input end of the alarm driving circuit 20; the other end of the first inductor L1 and the collector of the first transistor Q1 are connected to the first end of the first passive buzzer SPK1; the base of the first transistor Q1 and one end of the tenth resistor R10 are connected to one end of the eleventh resistor R11; the other end of the tenth resistor R10 is connected to the control circuit 70; the emitter of the first transistor Q1, the other end of the eleventh resistor R11 and the second end of the first passive buzzer SPK1 are grounded.

[0088] In this embodiment, the control circuit 70 can control the base voltage of the first transistor Q1 to control its conduction and cutoff, thereby controlling the power and switch state of the first passive buzzer SPK1. Among them, the first inductor L1 can limit the sudden change of current, thereby helping to stabilize the fluctuation of current and voltage, which is beneficial for the alarm driving circuit 20 to stably drive the operation of the first passive buzzer SPK1.

[0089] See also Figure 6 In one embodiment of the utility model, the sound wave component is a second passive buzzer SPK2, and the sound wave driving circuit 30 includes a twelfth resistor R12, a thirteenth resistor R13, a second inductor L2 and a second transistor Q2;

[0090] Among them, one end of the second inductor L2 is connected to the power input end of the sound wave driving circuit 30; the other end of the second inductor L2 and the collector of the second transistor Q2 are connected to the first end of the second passive buzzer SPK2; the base of the second transistor Q2 and one end of the twelfth resistor R12 are connected to one end of the thirteenth resistor R13; the other end of the twelfth resistor R12 is connected to the control circuit 70; the emitter of the second transistor Q2, the other end of the thirteenth resistor R13 and the second end of the second passive buzzer SPK2 are grounded.

[0091] In this embodiment, the control circuit 70 can control the base voltage of the second transistor Q2 to control its conduction and cutoff, thereby controlling the power and switch state of the second passive buzzer SPK2. Among them, the second inductor L2 can limit the sudden change of current, thereby helping to stabilize the fluctuation of current and voltage, which is beneficial for the sound wave driving circuit 30 to stably drive the second passive buzzer SPK2.

[0092] See also Figure 7 In one embodiment of the utility model, the charging management circuit includes a charging interface U3, a charging chip U1, a red light emitting diode RL1, a green light emitting diode GL1, a third capacitor C3, a fourth capacitor C4, a fourteenth resistor R14, a fifteenth resistor R15 and a sixteenth resistor R16;

[0093] Among them, one end of the fourteenth resistor R14, the CE pin of the charging chip U1, and one end of the sixteenth resistor R16 are connected to the charging interface U3; the other end of the fourteenth resistor R14 and one end of the third capacitor C3 are connected to the VCC pin of the charging chip U1; the other end of the third capacitor C3 and one end of the fifteenth resistor R15 are connected to the TEMP pin of the charging chip U1; the PROG pin of the charging chip U1 is connected to the other end of the fifteenth resistor R15; the CHRG pin of the charging chip U1 is connected to the cathode of the red light-emitting diode RL1; the STDBY pin of the charging chip U1 is connected to the cathode of the green light-emitting diode GL1; the anode of the red light-emitting diode RL1 and the anode of the green light-emitting diode GL1 are connected to the other end of the sixteenth resistor R16; the BAT pin of the charging chip U1 and one end of the fourth capacitor C4 are connected to the anode of the battery BAT; the GND pin of the charging chip U1 and the other end of the fourth capacitor C4 are grounded to the cathode of the battery BAT.

[0094] In this embodiment, the charging interface U3 can be a TYPE-C interface. In order to adapt to the charging protocol, the TYPE-C interface can also be connected to the seventeenth resistor R17 and the eighteenth resistor R18. The charging chip U1 can adopt the ME4057-ES0P8 model charging chip, and its charging current is adjustable, and the maximum can reach 1A. The red light is controlled to light up when charging, and the green light is controlled to light up when fully charged. In this way, this embodiment can improve the stability and safety of the charging process by adopting the ME4057-ES0P8 model charging chip U1 and the TYPE-C interface design.

[0095] The utility model also provides a human body sensor, which includes a human body sensor control circuit. The specific structure of the human body sensor control circuit refers to the above embodiment. Since the human body sensor adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0096] See also Fig. 9 In one embodiment of the utility model, the front of the human body sensor is the lighting direction, an infrared sensor is arranged in the middle, a touch button and a charging interface U3 are arranged on the side, and a magnetic suction component is arranged on the back. The overall size can be between 10 cm and 20 cm. The product can be handheld and can also be fixed by magnetic suction at any desired location, and has a wide range of application scenarios.

[0097] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A human body sensor control circuit, characterized in that: The human body sensor includes a lighting component, a sound wave component and an alarm component, and the human body sensor control circuit includes: A lighting driving circuit, wherein the lighting driving circuit is connected to the lighting assembly; An alarm driving circuit, the alarm driving circuit is connected to the alarm component; an acoustic wave driving circuit, the acoustic wave driving circuit being connected to the acoustic wave component; A trigger circuit, wherein the trigger circuit is used to output a corresponding trigger signal when triggered by a user; Infrared sensing circuit, the infrared sensing circuit is used to detect human infrared information in the environment and output corresponding infrared sensing signals; A light intensity detection circuit, which is used to detect the ambient light intensity and output a corresponding light detection signal; A control circuit, wherein the control circuit is respectively connected to the lighting drive circuit, the alarm drive circuit, the sound wave drive circuit, the trigger circuit, the infrared sensing circuit and the light intensity detection circuit; The control circuit is used to control the lighting drive circuit to drive the lighting component to illuminate, control the alarm drive circuit to drive the alarm component to sound an alarm, and control the sound wave drive circuit to drive the sound wave component to emit ultrasonic waves according to the trigger signal, the infrared sensing signal and the light detection signal.

2. The human body sensor control circuit according to claim 1, characterized in that: Also includes: A battery, wherein the battery is respectively connected to the lighting drive circuit, the alarm drive circuit, the sound wave drive circuit, the infrared sensing circuit and the light intensity detection circuit; A charging management circuit is connected to the external power supply voltage input terminal and the battery respectively, and is used to convert the external power supply voltage into a battery voltage output.

3. The human body sensor control circuit according to claim 1, characterized in that: The light intensity detection circuit includes a phototransistor, a first resistor and a first capacitor; one end of the phototransistor is connected to the power input end of the light intensity detection circuit, the other end of the phototransistor, one end of the first resistor, and one end of the first capacitor are connected to the control circuit, and the other end of the first resistor and the other end of the first capacitor are grounded.

4. The human body sensor control circuit according to claim 1, characterized in that: The infrared sensing circuit includes an infrared sensor and a second capacitor; the first pin of the infrared sensor is connected to the power input end of the infrared sensing circuit; the second pin of the infrared sensor and one end of the second capacitor are connected to the control circuit; the third pin of the infrared sensor and the other end of the second capacitor are grounded.

5. The human body sensor control circuit as claimed in claim 1, characterized in that: The lighting assembly includes a cold light lamp and a warm light lamp, and the lighting driving circuit includes: A cold light lamp driving circuit, the cold light lamp driving circuit is connected to the cold light lamp; the cold light lamp driving circuit is used to drive the cold light lamp to emit light; A warm light lamp driving circuit, the warm light lamp driving circuit is connected to the warm light lamp; the warm light lamp driving circuit is used to drive the warm light lamp to emit light.

6. The human body sensor control circuit as claimed in claim 5, characterized in that: The cold light lamp driving circuit includes a second resistor, a third resistor, a fourth resistor, a fifth resistor and a first MOS tube; one end of the fourth resistor and one end of the fifth resistor are connected to the cold light lamp; the other end of the fourth resistor and the other end of the fifth resistor are connected to the drain of the first MOS tube; the gate of the first MOS tube and one end of the second resistor are connected to one end of the third resistor; the other end of the second resistor is connected to the control circuit; the source of the first MOS tube and the other end of the third resistor are grounded; The warm light lamp driving circuit includes a sixth resistor, a seventh resistor, an eighth resistor, a ninth resistor and a second MOS tube; one end of the eighth resistor and one end of the ninth resistor are connected to the warm light lamp; the other end of the eighth resistor and the other end of the ninth resistor are connected to the drain of the second MOS tube; the gate of the second MOS tube, one end of the sixth resistor and one end of the seventh resistor are connected; the other end of the sixth resistor is connected to the control circuit; the source of the second MOS tube and the other end of the seventh resistor are grounded.

7. The human body sensor control circuit according to claim 1, characterized in that: The alarm component is a first passive buzzer, and the alarm driving circuit includes a tenth resistor, an eleventh resistor, a first inductor and a first transistor; Among them, one end of the first inductor is connected to the power input end of the alarm driving circuit; the other end of the first inductor and the collector of the first transistor are connected to the first end of the first passive buzzer; the base of the first transistor and one end of the tenth resistor are connected to one end of the eleventh resistor; the other end of the tenth resistor is connected to the control circuit; the emitter of the first transistor, the other end of the eleventh resistor and the second end of the first passive buzzer are grounded.

8. The human body sensor control circuit as claimed in claim 2, characterized in that: The sound wave component is a second passive buzzer, and the sound wave driving circuit includes a twelfth resistor, a thirteenth resistor, a second inductor and a second transistor; Among them, one end of the second inductor is connected to the power input end of the sound wave driving circuit; the other end of the second inductor and the collector of the second transistor are connected to the first end of the second passive buzzer; the base of the second transistor and one end of the twelfth resistor are connected to one end of the thirteenth resistor; the other end of the twelfth resistor is connected to the control circuit; the emitter of the second transistor, the other end of the thirteenth resistor and the second end of the second passive buzzer are grounded.

9. The human body sensor control circuit as claimed in claim 2, characterized in that: The charging management circuit includes a charging interface, a charging chip, a red light emitting diode, a green light emitting diode, a third capacitor, a fourth capacitor, a fourteenth resistor, a fifteenth resistor and a sixteenth resistor; Among them, one end of the fourteenth resistor, the CE pin of the charging chip, and one end of the sixteenth resistor are connected to the charging interface; the other end of the fourteenth resistor and one end of the third capacitor are connected to the VCC pin of the charging chip; the other end of the third capacitor and one end of the fifteenth resistor are connected to the TEMP pin of the charging chip; the PROG pin of the charging chip is connected to the other end of the fifteenth resistor; the CHRG pin of the charging chip is connected to the cathode of the red light-emitting diode; the STDBY pin of the charging chip is connected to the cathode of the green light-emitting diode; the anode of the red light-emitting diode and the anode of the green light-emitting diode are connected to the other end of the sixteenth resistor; the BAT pin of the charging chip and one end of the fourth capacitor are connected to the positive electrode of the battery; the GND pin of the charging chip and the other end of the fourth capacitor are grounded to the negative electrode of the battery.

10. A human body sensor, characterized in that: The human body sensor comprises the human body sensor control circuit as claimed in any one of claims 1 to 9.

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