Lamp control circuit and lamp system based on PIR sensing

Abstract

The utility model relates to the technical field of circuit control, in particular to a PIR sensing-based lamp control circuit and a lamp system, the PIR sensing-based lamp control circuit is applied to the lamp system, and the PIR sensing-based lamp control circuit comprises a control module, an AD-DC power supply module, a PIR module, an IC module, a relay module, a light sensing module and an adjusting module which are electrically connected with one another, the PIR module adopts an AS063H type PIR chip, is a high-performance PIR sensing chip, can monitor a human body infrared sensing signal, and quickly judges whether a person passes through an external environment or not through analysis and processing. In addition, the light sensing module can detect whether the external environment is daytime or night. Therefore, the control module is combined with the infrared data monitored by the PIR module and the illumination data detected by the light sensation module, the opportunity of turning on or turning off the lamp can be intelligently judged, the misjudgment rate of intelligent control of the lamp is lower, and the intelligent degree is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit control, in particular to a lamp control circuit and a lamp system based on PIR sensing. Background Art

[0002] With the rapid development of intelligent control technology, automated and intelligent products are constantly emerging. Intelligent control methods are gradually replacing traditional mechanical operation control methods and becoming the development trend of the intelligent control industry. Therefore, the lighting industry is also facing the challenge of transformation to intelligence. At present, some lamps are gradually equipped with intelligent control functions, such as controlling the automatic switch of lamps according to the brightness of the environment. However, this level of intelligent control has a high misjudgment rate of automatic control due to the overly simple judgment mechanism, which cannot meet people's increasingly complex control needs for lamps, and the customer experience is poor. Therefore, designing a lamp control circuit with a low misjudgment rate to achieve more intelligent control of lamps is an urgent problem to be solved. Utility Model Content

[0003] In view of this, the utility model proposes a lamp control circuit and a lamp system based on PIR sensing, aiming to solve the problem of high misjudgment rate of current intelligent control of lamps.

[0004] The utility model proposes a lamp control circuit based on PIR sensing, which is applied to a lamp system and comprises a control module, an AD-DC power supply module, a PIR module, an IC module, a relay module, a light sensing module and an adjustment module; wherein the AD-DC power supply module is electrically connected to the control module, the PIR module and the light sensing module respectively, the IC module is electrically connected to the control module and the PIR module respectively, the control module is also electrically connected to the relay module, the light sensing module and the adjustment module respectively, and the PIR module adopts an AS063H PIR chip.

[0005] Furthermore, the PIR module includes a PIR chip U1 of AS063H type, a resistor R3, a resistor R5, a capacitor C1, a resistor R4 and a PIR probe connector; wherein, the first pin of the PIR chip U1 is grounded, the second pin of the PIR chip U1 is connected to the 3.3V power supply terminal, the third pin and the fourth pin of the PIR chip U1 are both suspended, the fifth pin of the PIR chip U1 is connected to the OUT terminal through the resistor R3, the sixth pin of the PIR chip U1 is respectively connected to one end of the resistor R5, one end of the capacitor C1 and one end of the resistor R4, the other end of the resistor R5 and the other end of the capacitor C1 are both grounded, the other end of the resistor R4 is connected to the SEN terminal, the seventh pin of the PIR chip U1 is connected to the S power supply terminal of the PIR probe connector, the G ground terminal of the PIR probe connector is grounded, and the eighth pin of the PIR chip U1 is respectively connected to the 3.3V power supply terminal and the D data terminal of the PIR probe connector.

[0006] Further, the control module includes a FT61EC21A type single chip microcomputer U3, the light sensing module includes an NPN type phototransistor D1, and the adjustment module includes a potentiometer VR1, a capacitor C6, a potentiometer VR3, a capacitor C9, a resistor R2, a resistor R1, a potentiometer VR2 and a capacitor C8;

[0007] Among them, the first pin of the single-chip microcomputer U3 is respectively connected to the 3.3V power supply terminal and one end of the potentiometer VR2, the second pin of the single-chip microcomputer U3 is connected to the OUT terminal, the third pin of the single-chip microcomputer U3 is connected to the SEN terminal, the fourth pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C9 and the sliding end of the potentiometer VR3, the fifth pin of the single-chip microcomputer U3 is connected to the IN terminal, the sixth pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C8 and the sliding end of the potentiometer VR2, the seventh pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C6 and the potentiometer The sliding end of the potentiometer VR1 is connected to the ground, the 8th pin of the single-chip computer U3 is grounded, the other end of the capacitor C8, the other end of the potentiometer VR2, the other end of the capacitor C6, one end of the potentiometer VR1 and the other end of the capacitor C9 are all grounded, one end of the potentiometer VR3 is grounded through a resistor R2, the other end of the potentiometer VR3 is connected to the emitter of the NPN phototransistor D1 through a resistor R1, the other end of the potentiometer VR1 is connected to a 3.3V power supply terminal, and the collector of the NPN phototransistor D1 is connected to a 3.3V power supply terminal.

[0008] Furthermore, the AD-DC power supply module includes a PIR power supply unit and a single-chip microcomputer power supply unit, the PIR power supply unit is electrically connected to the PIR module, and the single-chip microcomputer power supply unit is electrically connected to the control module.

[0009] Furthermore, the PIR power supply unit includes an AS7133 type voltage stabilizing chip U5, a capacitor C11 and a capacitor C3; wherein the first pin of the voltage stabilizing chip U5 is respectively connected to the ground terminal, one end of the capacitor C11 and one end of the capacitor C3, the second pin of the voltage stabilizing chip U5 is respectively connected to the other end of the capacitor C11, the other end of the capacitor C3 and the 3.3V end of the power supply, and the third pin of the voltage stabilizing chip U5 is connected to the V+ power supply end.

[0010] Furthermore, the single-chip microcomputer power supply unit includes an AS7133 type voltage stabilizing chip U2, a capacitor C5, a capacitor C2 and a capacitor C7; wherein the first pin of the voltage stabilizing chip U2 is respectively connected to one end of the capacitor C5, the ground end, one end of the capacitor C2 and one end of the capacitor C7, the second pin of the voltage stabilizing chip U2 is respectively connected to the other end of the capacitor C2, the other end of the capacitor C7 and the 3.3V power supply end, and the third pin of the voltage stabilizing chip U2 is respectively connected to the other end of the capacitor C5 and the V+ power supply end.

[0011] Furthermore, the relay module includes a relay unit and a relay power supply unit, and the relay unit and the relay power supply unit are electrically connected.

[0012] Further, the relay unit includes a resistor R8, a resistor R11, an NPN transistor Q3, a semiconductor diode D2 and a relay K2; wherein the cathode of the semiconductor diode D2 is respectively connected to the V+ power supply terminal and the common terminal of the relay K2, the anode of the semiconductor diode D2 is respectively connected to the electromagnetic coil terminal of the relay K2 and the collector of the NPN transistor Q3, the energized end of the relay K2 is connected to the B-CON terminal, the normally closed end of the relay K2 is connected to the A-CON terminal, the emitter of the NPN transistor Q3 is grounded, and the base of the NPN transistor Q3 is respectively connected to the IN terminal through the resistor R8 and to the ground through the resistor R11;

[0013] The relay power supply unit includes a semiconductor diode Z1, a polar capacitor C4, a bridge full-wave rectifier DB1, a capacitor C10, a resistor R9, a resistor R10, a thermistor MOV1 and a fuse F1; wherein the cathode of the semiconductor diode Z1 is respectively connected to the V+ power supply terminal, the anode of the polar capacitor C4 and the anode terminal of the bridge full-wave rectifier DB1, the anode of the semiconductor diode Z1 is respectively connected to the cathode of the polar capacitor C4, the ground terminal and the cathode terminal of the bridge full-wave rectifier DB1, and the bridge The input end of the full-wave rectifier DB1 is respectively connected to one end of the capacitor C10 and one end of the resistor R10, the other end of the resistor R10 is connected to one end of the resistor R9, the other end of the resistor R9 is respectively connected to the other end of the capacitor C10, one end of the thermistor MOV1 and the neutral line end of N-CON, the output end of the bridge full-wave rectifier DB1 is respectively connected to the other end of the thermistor MOV1 and one end of the fuse F1, the other end of the fuse F1 is connected to the live line end of L-CON.

[0014] The utility model also provides a lamp system, comprising the lamp control circuit based on PIR sensing as described above, and a lamp electrically connected to the relay module.

[0015] Furthermore, the lamp is a three-head wall lamp, and the three-head wall lamp includes three LED lamp heads connected in parallel.

[0016] Compared with the prior art, the utility model has the following beneficial effects: a lamp control circuit and a lamp system based on PIR sensing, wherein the lamp control circuit based on PIR sensing is applied to the lamp system, and includes a control module, an AD-DC power supply module, a PIR module, an IC module, a relay module, a light sensing module and an adjustment module; wherein the AD-DC power supply module is electrically connected to the control module, the PIR module and the light sensing module respectively, the IC module is electrically connected to the control module and the PIR module respectively, the control module is also electrically connected to the relay module, the light sensing module and the adjustment module respectively, and the PIR module adopts the AS063H PIR chip, which is a high-performance PIR sensor chip, capable of monitoring human infrared sensing signals, and quickly determining whether someone is passing by the external environment after analysis and processing. In addition, the light sensing module can detect whether the external environment is daytime or nighttime. Then, the control module combines the infrared data monitored by the PIR module and the light data detected by the light sensing module to intelligently determine the timing of turning on or off the lamp, achieving the intelligent automatic control effect of turning off the light during the day and turning on the light when someone passes by at night. This automatic control mechanism reduces the misjudgment rate of intelligent control of lamps, increases the degree of intelligence, provides a good user experience, and is energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] By reading the detailed description of the preferred embodiment below, various other advantages and benefits will become clear to those of ordinary skill in the art. The accompanying drawings are only used for the purpose of illustrating the preferred embodiment and are not considered to be limiting of the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0018] Figure 1 A structural block diagram of a lamp control circuit based on PIR sensing provided in an embodiment of the utility model;

[0019] Figure 2 A circuit diagram of a PIR module provided in an embodiment of the utility model;

[0020] Figure 3 A circuit structure diagram of a control module, a light sensing module and an adjustment module provided in an embodiment of the utility model;

[0021] Figure 4 A circuit diagram of a PIR power supply unit provided in an embodiment of the utility model;

[0022] Figure 5 A circuit diagram of a single chip microcomputer power supply unit provided in an embodiment of the utility model;

[0023] Figure 6 A circuit diagram of a relay unit provided in an embodiment of the utility model;

[0024] Figure 7 A circuit diagram of a relay power supply unit provided in an embodiment of the utility model;

[0025] Figure 8 A structural block diagram of a lighting system provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the scheme 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.

[0027] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications 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.

[0028] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of technical features indicated. 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 the 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 utility model.

[0029] Please refer to Figure 1 , which is a structural block diagram of a lamp control circuit based on PIR sensing provided in an embodiment of the utility model.

[0030] The utility model proposes a lamp control circuit based on PIR sensing, which is applied to a lamp system, comprising a control module, an AD-DC power supply module, a PIR module, an IC module, a relay module, a light sensing module and an adjustment module; wherein the AD-DC power supply module is electrically connected to the control module, the PIR module and the light sensing module respectively, the IC module is electrically connected to the control module and the PIR module respectively, the control module is also electrically connected to the relay module, the light sensing module and the adjustment module respectively, and the PIR module adopts an AS063H PIR chip.

[0031] The PIR sensor-based lamp control circuit provided in this embodiment adopts the AS063H PIR chip, which is a high-performance PIR sensor chip that can monitor the infrared sensing signal of the human body and quickly determine whether there is anyone passing by in the external environment through analysis and processing. In addition, the light sensing module can detect whether the external environment is daytime or nighttime. Then, the control module can intelligently determine the timing of turning on or off the lamp by combining the infrared data monitored by the PIR module and the illumination data detected by the light sensing module, so as to achieve the intelligent automatic control effect of turning off the lamp during the day and turning on the lamp when someone passes by at night. This automatic control mechanism makes the error rate of intelligent control of lamps lower, the degree of intelligence higher, the user experience good, and energy-saving and environmentally friendly.

[0032] Please refer to Figure 2 , which is a circuit structure diagram of the PIR module provided in an embodiment of the utility model.

[0033] In some embodiments of the present application, the PIR module includes a PIR chip U1 of AS063H type, a resistor R3, a resistor R5, a capacitor C1, a resistor R4 and a PIR probe connector; wherein, the first pin of the PIR chip U1 is grounded, the second pin of the PIR chip U1 is connected to the 3.3V power supply terminal, the third pin and the fourth pin of the PIR chip U1 are both suspended, the fifth pin of the PIR chip U1 is connected to the OUT terminal through the resistor R3, the sixth pin of the PIR chip U1 is respectively connected to one end of the resistor R5, one end of the capacitor C1 and one end of the resistor R4, the other end of the resistor R5 and the other end of the capacitor C1 are both grounded, the other end of the resistor R4 is connected to the SEN terminal, the seventh pin of the PIR chip U1 is connected to the S power supply terminal of the PIR probe connector, the G ground terminal of the PIR probe connector is grounded, and the eighth pin of the PIR chip U1 is respectively connected to the 3.3V power supply terminal and the D data terminal of the PIR probe connector.

[0034] Specifically, the AS063H chip is a high-performance PIR sensor chip. The AS063H chip is mainly used in the fields of infrared sensing monitoring lamps, etc. By analyzing and processing the infrared sensing signals of the human body, it can determine whether there are people passing by and whether the lamps need to be turned on for lighting. The AS063H chip uses advanced infrared sensing processing technology, which can accurately capture and analyze the infrared signals emitted by the human body. Combined with intelligent algorithms, the AS063H chip can realize intelligent judgment of the environment, such as automatically adjusting the working state of the lamps according to the brightness of the sky, thereby optimizing energy consumption and improving user experience. This intelligent control mechanism not only improves energy utilization efficiency, but also brings innovative solutions to the security field.

[0035] Please refer to Figure 3 , which is a circuit structure diagram of the control module, light sensing module and adjustment module provided in an embodiment of the utility model.

[0036] In some embodiments of the present application, the control module includes a FT61EC21A type single chip microcomputer U3, the light sensing module includes an NPN type phototransistor D1, and the adjustment module includes a potentiometer VR1, a capacitor C6, a potentiometer VR3, a capacitor C9, a resistor R2, a resistor R1, a potentiometer VR2 and a capacitor C8;

[0037] Among them, the first pin of the single-chip microcomputer U3 is respectively connected to the 3.3V power supply terminal and one end of the potentiometer VR2, the second pin of the single-chip microcomputer U3 is connected to the OUT terminal, the third pin of the single-chip microcomputer U3 is connected to the SEN terminal, the fourth pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C9 and the sliding end of the potentiometer VR3, the fifth pin of the single-chip microcomputer U3 is connected to the IN terminal, the sixth pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C8 and the sliding end of the potentiometer VR2, the seventh pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C6 and the potentiometer The sliding end of the potentiometer VR1 is connected to the ground, the 8th pin of the single-chip computer U3 is grounded, the other end of the capacitor C8, the other end of the potentiometer VR2, the other end of the capacitor C6, one end of the potentiometer VR1 and the other end of the capacitor C9 are all grounded, one end of the potentiometer VR3 is grounded through a resistor R2, the other end of the potentiometer VR3 is connected to the emitter of the NPN phototransistor D1 through a resistor R1, the other end of the potentiometer VR1 is connected to a 3.3V power supply terminal, and the collector of the NPN phototransistor D1 is connected to a 3.3V power supply terminal.

[0038] Specifically, the FT61EC21A type microcontroller is an 8-bit MCU (Microcontroller Unit) microcontroller chip. The processor speed of this 8-bit MCU microcontroller chip is 16MHz, which can execute instructions at a higher speed. And its power supply voltage range is 2.0~5.5V, the power supply current is 2.2mA, and it also has good stability and adaptability under different power supply conditions. This 8-bit MCU microcontroller integrates an 8-bit analog-to-digital converter (ADC, Analog-to-Digital Converter, analog-to-digital converter), which can process analog signal input, such as the signal of the light sensor, and convert it into a digital signal for the processor to use. It also provides multiple IO ports, UART, SPI and supports I2C interface. These rich peripheral interfaces facilitate communication and control with other devices.

[0039] Specifically, a phototransistor is a semiconductor photoelectric device whose current is controlled by external light. This type of transistor is similar in structure to connecting a photodiode between the base and collector of an ordinary transistor, where the current generated by the photodiode is equivalent to the base current of the transistor. Due to its current amplification effect, the phototransistor is more sensitive than the photodiode and can output a larger photocurrent at the collector. When light shines on the photosensitive window (i.e., the base) of the phototransistor, electron-hole pairs are generated. These charge carriers form a current under the action of the internal electric field, realize photoelectric conversion, and are amplified by the transistor, thereby outputting the amplified electrical signal at the collector. When there is no light, the phototransistor is in the cut-off state and no electrical signal is output; when exposed to light, the phototransistor is turned on and a photocurrent is generated at the collector. Phototransistors are usually used for the detection of optical signals, and can convert optical signals into electrical signals for subsequent processing.

[0040] Specifically, a potentiometer is an adjustable resistor used to control the voltage or current in a circuit. The basic structure of a potentiometer consists of a fixed resistor and a contact that can slide on it. Changing the position of the contact changes the resistance value of the resistor, thereby changing the current or voltage in the circuit.

[0041] Specifically, the PIR sensor-based lamp control circuit provided in the embodiment of the utility model combines a control module, a light sensing module and an adjustment module together to achieve the purpose of designing the threshold of the light sensing module, the sensitivity of the PIR sensor, and the lighting time of the external lamp by adjusting the potentiometer.

[0042] In some embodiments of the present application, the AD-DC power supply module includes a PIR power supply unit and a single-chip microcomputer power supply unit, the PIR power supply unit is electrically connected to the PIR module, and the single-chip microcomputer power supply unit is electrically connected to the control module.

[0043] Specifically, the AD-DC power supply module is electrically connected to the control module and the PIR module respectively so as to supply power to the control module and the PIR module at the same time. The AD-DC power supply module adopts a simple LDO (Low Dropout Regulator, low voltage difference linear regulator) power supply method with low cost. LDO is used to provide a stable output voltage under the condition of a small voltage difference between the input voltage and the output voltage. LDO power supply uses an LDO regulator to provide a stable power supply for the circuit. Of course, the AD-DC power supply module can also be electrically connected to the photosensitive module so as to supply power to the photosensitive module.

[0044] Please refer to Figure 4 , which is a circuit structure diagram of the PIR power supply unit provided in an embodiment of the utility model.

[0045] In some embodiments of the present application, the PIR power supply unit includes an AS7133 type voltage regulator chip U5, a capacitor C11 and a capacitor C3; wherein the first pin of the voltage regulator chip U5 is respectively connected to the ground terminal, one end of the capacitor C11 and one end of the capacitor C3, the second pin of the voltage regulator chip U5 is respectively connected to the other end of the capacitor C11, the other end of the capacitor C3 and the 3.3V end of the power supply, and the third pin of the voltage regulator chip U5 is connected to the V+ power supply terminal.

[0046] Please refer to Figure 5 , which is a circuit structure diagram of the single-chip microcomputer power supply unit provided in an embodiment of the utility model.

[0047] In some embodiments of the present application, the single-chip microcomputer power supply unit includes an AS7133 type voltage stabilizing chip U2, a capacitor C5, a capacitor C2 and a capacitor C7; wherein the first pin of the voltage stabilizing chip U2 is respectively connected to one end of the capacitor C5, the ground end, one end of the capacitor C2 and one end of the capacitor C7, the second pin of the voltage stabilizing chip U2 is respectively connected to the other end of the capacitor C2, the other end of the capacitor C7 and the 3.3V power supply end, and the third pin of the voltage stabilizing chip U2 is respectively connected to the other end of the capacitor C5 and the V+ power supply end.

[0048] Specifically, the AS7133 voltage regulator chip is a high-precision, low-power linear voltage regulator that is widely used in electronic devices to ensure voltage stability and reliability. The AS7133 voltage regulator chip can provide a very precise output voltage, and its error is usually within a few mV, which ensures that the high requirements of electronic equipment for voltage stability are met. The AS7133 voltage regulator chip uses advanced power management technology, which significantly reduces power consumption during operation while maintaining high performance, not only extending the battery life of the device, but also reducing heat generation, improving the reliability and stability of the device. The AS7133 voltage regulator chip has excellent voltage regulation characteristics and noise suppression capabilities. It can maintain a stable output voltage even when the input voltage fluctuates, ensuring that the device can meet voltage requirements under different working conditions.

[0049] Specifically, in the lamp control circuit based on PIR sensing provided by the embodiment of the utility model, the power supply of the relay module needs to be 12V, the power supply of the control module and the power supply of the PIR module are 3.3V respectively, and the power supply values ​​of the three are different, so a separate power supply mode is adopted. And because the PIR module is easily interfered, the control module and the PIR module also adopt a separate power supply mode.

[0050] In some embodiments of the present application, the relay module includes a relay unit and a relay power supply unit, and the relay unit and the relay power supply unit are electrically connected.

[0051] Please refer to Figure 6 and Figure 7 , which are circuit structure diagrams of the relay unit and the relay power supply unit provided in the embodiments of the present utility model.

[0052] In some embodiments of the present application, the relay unit includes a resistor R8, a resistor R11, an NPN transistor Q3, a semiconductor diode D2 and a relay K2; wherein the cathode of the semiconductor diode D2 is respectively connected to the V+ power supply terminal and the common terminal of the relay K2, the anode of the semiconductor diode D2 is respectively connected to the electromagnetic coil terminal of the relay K2 and the collector of the NPN transistor Q3, the energized end of the relay K2 is connected to the B-CON terminal, the normally closed end of the relay K2 is connected to the A-CON terminal, the emitter of the NPN transistor Q3 is grounded, and the base of the NPN transistor Q3 is respectively connected to the IN terminal through the resistor R8 and to the ground through the resistor R11.

[0053] In some embodiments of the present application, the relay power supply unit includes a semiconductor diode Z1, a polarized capacitor C4, a bridge full-wave rectifier DB1, a capacitor C10, a resistor R9, a resistor R10, a thermistor MOV1 and a fuse F1; wherein the cathode of the semiconductor diode Z1 is respectively connected to the V+ power supply terminal, the anode of the polarized capacitor C4 and the anode terminal of the bridge full-wave rectifier DB1, and the anode of the semiconductor diode Z1 is respectively connected to the cathode of the polarized capacitor C4, the ground terminal and the cathode of the bridge full-wave rectifier DB1. The input end of the bridge full-wave rectifier DB1 is respectively connected to one end of the capacitor C10 and one end of the resistor R10, the other end of the resistor R10 is connected to one end of the resistor R9, the other end of the resistor R9 is respectively connected to the other end of the capacitor C10, one end of the thermistor MOV1 and the neutral line end of N-CON, the output end of the bridge full-wave rectifier DB1 is respectively connected to the other end of the thermistor MOV1 and one end of the fuse F1, the other end of the fuse F1 is connected to the live line end of L-CON.

[0054] Specifically, a relay is an electrical control device, an automatic switch that uses a small current to control a large current. The relay is mainly composed of a coil, an iron core, a contact group and other components. When the coil is energized, the magnetic field generated attracts the iron core, which in turn drives the opening and closing of the contacts, thereby controlling the connection or disconnection of the circuit. The input circuit of the relay usually only passes a small current, while the output circuit can carry a larger current, which enables the relay to control high-power circuits with weak signals. Using relays, it is possible to control high-current loads, such as the switch of lamps, with weak control signals.

[0055] The lamp control circuit based on PIR sensing provided by the embodiment of the utility model utilizes the characteristic that the spontaneous polarization intensity of pyroelectric materials generates charge movement as the external temperature changes, detects the change of infrared energy radiated by the human body in a non-contact manner, and then combines the collected changes in the external environment light to achieve error-free triggering. That is, using the PIR module to detect the human body in combination with the light sensing module to collect light, it can achieve the effect that there will be no false triggering when the external environment changes, and at the same time ensure that the light will turn on when someone passes by. The lamp control circuit based on PIR sensing checks whether the external environment is daytime or night through the light sensing module, and then cooperates with the PIR module, IC module and PIR probe to monitor the human body, and finally makes a judgment on whether to turn on or off the lamp through software algorithm calculation, so as to achieve the effect of turning off the light during the day and turning on the light when someone passes by at night.

[0056] The following is an embodiment of the lamp system provided by the utility model. The embodiment of the lamp system and the embodiment of the lamp control circuit based on PIR sensing described above belong to the same concept, and the details not described in detail in the embodiment of the lamp system can refer to the embodiment of the lamp control circuit based on PIR sensing described above.

[0057] Please refer to Figure 8 , which is a structural block diagram of the lighting system provided by an embodiment of the utility model.

[0058] The lamp system provided by the present invention comprises the lamp control circuit based on PIR sensing as described above, and a lamp electrically connected to the relay module.

[0059] Specifically, the lamp system includes a lamp body and a sensor head, wherein the lamp body is provided with a lamp, and the sensor head is provided with a lamp control circuit based on PIR sensing. The lamp body and the sensor head can be integrated into one or can be a separate structure.

[0060] It is understandable that the above-mentioned PIR sensor-based lamp control circuit and lamp system have the same beneficial effects, which will not be described in detail here.

[0061] In some embodiments of the present application, the lamp is a three-head wall lamp, and the three-head wall lamp includes three LED lamp heads connected in parallel.

[0062] Specifically, the three parallel-connected LED lamp heads can execute control instructions as a whole, or can execute control instructions separately as three independent individuals.

[0063] The lamp system provided by the embodiment of the utility model is a new type of lamp with intelligent control function, high intelligence and good user experience.

[0064] It should be noted that the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0065] The above description is only a partial or preferred embodiment of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. A lamp control circuit based on PIR sensing, applied to a lamp system, characterized in that: It includes a control module, an AD-DC power supply module, a PIR module, an IC module, a relay module, a light sensing module and an adjustment module; wherein the AD-DC power supply module is electrically connected to the control module, the PIR module and the light sensing module respectively, the IC module is electrically connected to the control module and the PIR module respectively, the control module is also electrically connected to the relay module, the light sensing module and the adjustment module respectively, and the PIR module adopts an AS063H PIR chip.

2. The PIR sensing-based lamp control circuit according to claim 1, characterized in that: The PIR module includes a PIR chip U1 of AS063H type, a resistor R3, a resistor R5, a capacitor C1, a resistor R4 and a PIR probe connector; wherein, the first pin of the PIR chip U1 is grounded, the second pin of the PIR chip U1 is connected to the 3.3V power supply terminal, the third pin and the fourth pin of the PIR chip U1 are both suspended, the fifth pin of the PIR chip U1 is connected to the OUT terminal through the resistor R3, the sixth pin of the PIR chip U1 is respectively connected to one end of the resistor R5, one end of the capacitor C1 and one end of the resistor R4, the other end of the resistor R5 and the other end of the capacitor C1 are both grounded, the other end of the resistor R4 is connected to the SEN terminal, the seventh pin of the PIR chip U1 is connected to the S power supply terminal of the PIR probe connector, the G ground terminal of the PIR probe connector is grounded, and the eighth pin of the PIR chip U1 is respectively connected to the 3.3V power supply terminal and the D data terminal of the PIR probe connector.

3. The PIR sensing-based lamp control circuit according to claim 1, characterized in that: The control module includes a FT61EC21A type single chip microcomputer U3, the light sensing module includes an NPN type phototransistor D1, and the adjustment module includes a potentiometer VR1, a capacitor C6, a potentiometer VR3, a capacitor C9, a resistor R2, a resistor R1, a potentiometer VR2 and a capacitor C8; Among them, the first pin of the single-chip microcomputer U3 is respectively connected to the 3.3V power supply terminal and one end of the potentiometer VR2, the second pin of the single-chip microcomputer U3 is connected to the OUT terminal, the third pin of the single-chip microcomputer U3 is connected to the SEN terminal, the fourth pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C9 and the sliding end of the potentiometer VR3, the fifth pin of the single-chip microcomputer U3 is connected to the IN terminal, the sixth pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C8 and the sliding end of the potentiometer VR2, the seventh pin of the single-chip microcomputer U3 is respectively connected to one end of the capacitor C6 and the potentiometer The sliding end of the potentiometer VR1 is connected to the ground, the 8th pin of the single-chip computer U3 is grounded, the other end of the capacitor C8, the other end of the potentiometer VR2, the other end of the capacitor C6, one end of the potentiometer VR1 and the other end of the capacitor C9 are all grounded, one end of the potentiometer VR3 is grounded through a resistor R2, the other end of the potentiometer VR3 is connected to the emitter of the NPN phototransistor D1 through a resistor R1, the other end of the potentiometer VR1 is connected to a 3.3V power supply terminal, and the collector of the NPN phototransistor D1 is connected to a 3.3V power supply terminal.

4. The PIR sensing-based lamp control circuit according to claim 1, characterized in that: The AD-DC power supply module includes a PIR power supply unit and a single-chip microcomputer power supply unit, the PIR power supply unit is electrically connected to the PIR module, and the single-chip microcomputer power supply unit is electrically connected to the control module.

5. The PIR sensing-based lamp control circuit according to claim 4, characterized in that: The PIR power supply unit includes an AS7133 type voltage stabilizing chip U5, a capacitor C11 and a capacitor C3; wherein the first pin of the voltage stabilizing chip U5 is respectively connected to the ground terminal, one end of the capacitor C11 and one end of the capacitor C3, the second pin of the voltage stabilizing chip U5 is respectively connected to the other end of the capacitor C11, the other end of the capacitor C3 and the 3.3V end of the power supply, and the third pin of the voltage stabilizing chip U5 is connected to the V+ power supply end.

6. The PIR sensing-based lamp control circuit according to claim 4, characterized in that: The single-chip microcomputer power supply unit includes an AS7133 type voltage stabilizing chip U2, a capacitor C5, a capacitor C2 and a capacitor C7; wherein the first pin of the voltage stabilizing chip U2 is respectively connected to one end of the capacitor C5, the ground end, one end of the capacitor C2 and one end of the capacitor C7, the second pin of the voltage stabilizing chip U2 is respectively connected to the other end of the capacitor C2, the other end of the capacitor C7 and the 3.3V power supply end, and the third pin of the voltage stabilizing chip U2 is respectively connected to the other end of the capacitor C5 and the V+ power supply end.

7. The PIR sensing-based lamp control circuit according to claim 1, characterized in that: The relay module includes a relay unit and a relay power supply unit, and the relay unit and the relay power supply unit are electrically connected.

8. The PIR sensing-based lamp control circuit according to claim 7, characterized in that: The relay unit includes a resistor R8, a resistor R11, an NPN transistor Q3, a semiconductor diode D2 and a relay K2; wherein the cathode of the semiconductor diode D2 is respectively connected to the V+ power supply terminal and the common terminal of the relay K2, the anode of the semiconductor diode D2 is respectively connected to the electromagnetic coil terminal of the relay K2 and the collector of the NPN transistor Q3, the energized end of the relay K2 is connected to the B-CON terminal, the normally closed end of the relay K2 is connected to the A-CON terminal, the emitter of the NPN transistor Q3 is grounded, and the base of the NPN transistor Q3 is respectively connected to the IN terminal through the resistor R8 and to the ground through the resistor R11; The relay power supply unit includes a semiconductor diode Z1, a polar capacitor C4, a bridge full-wave rectifier DB1, a capacitor C10, a resistor R9, a resistor R10, a thermistor MOV1 and a fuse F1; wherein the cathode of the semiconductor diode Z1 is respectively connected to the V+ power supply terminal, the anode of the polar capacitor C4 and the anode terminal of the bridge full-wave rectifier DB1, the anode of the semiconductor diode Z1 is respectively connected to the cathode of the polar capacitor C4, the ground terminal and the cathode terminal of the bridge full-wave rectifier DB1, and the bridge The input end of the full-wave rectifier DB1 is respectively connected to one end of the capacitor C10 and one end of the resistor R10, the other end of the resistor R10 is connected to one end of the resistor R9, the other end of the resistor R9 is respectively connected to the other end of the capacitor C10, one end of the thermistor MOV1 and the neutral line end of N-CON, the output end of the bridge full-wave rectifier DB1 is respectively connected to the other end of the thermistor MOV1 and one end of the fuse F1, the other end of the fuse F1 is connected to the live line end of L-CON.

9. A lighting system, characterized in that: It comprises a lamp control circuit based on PIR sensing as described in any one of claims 1 to 8, and a lamp electrically connected to the relay module.

10. The lighting system according to claim 9, characterized in that: The lamp is a three-head wall lamp, which includes three LED lamp heads connected in parallel.

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