Bluetooth controller with multiple inductive heads

Abstract

The utility model relates to a Bluetooth controller with multiple inductive heads, which comprises a zero-cross detection and PUSH dimming detection combined circuit, a Bluetooth chip circuit, a relay switching circuit, a dimming circuit and an inductive head interface circuit which are respectively and electrically connected with an alternating current input circuit and a switching power supply circuit, the inductive head interface circuit comprises an external inductive head interface and an interface matching circuit, and the interface matching circuit is an infrared inductive head matching circuit or a microwave inductive head matching circuit. According to the scheme, the Bluetooth controller can be compatible with an infrared inductive head and a microwave inductive head, when the inductive heads are different, only one matching circuit needs to be replaced, the different inductive heads can be recognized, software, hardware and the production debugging process of the whole scheme are unified, the whole circuit unit is optimized and integrated, and the cost is reduced. The hardware size is fully reduced, compatibility, flattening and attractiveness of products are achieved, the production efficiency is improved, the purchase and production cost is reduced, and great convenience is provided for later product maintenance and service.

Description

Technical Field

[0001] The utility model relates to the field of lamp products, in particular to a Bluetooth controller with multiple sensor heads. Background Art

[0002] The current lamps on the market are usually equipped with lamp boxes, and some lamp boxes have sensor functions, which are very user-friendly and energy-saving. Usually, microwave sensors or infrared sensors are the mainstream sensors, but the existing microwave sensors and infrared sensors have single functions and complex circuits for each function. They need to purchase many components for each functional circuit, resulting in large product size and complex wiring. They cannot meet the flatness and aesthetic requirements of microwave sensors and infrared sensors.

[0003] The existing lamp box has the disadvantage that it can only process microwave or infrared sensing separately, and each functional circuit performs its own function separately, and cannot be integrated to achieve the required functional combination and cannot work together. In addition, the zero-crossing detection and PUSH dimming detection of the lamp box are separate independent circuits that need to be improved.

[0004] In order to overcome the above shortcomings, this solution proposes a Bluetooth controller with multiple sensor heads. Utility Model Content

[0005] The invention of this utility model aims to improve the existing lighting boxes, which can only process microwave or infrared sensing separately, cannot integrate the required functional combination, cannot work together, and have separate independent circuits for zero-crossing detection and PUSH dimming detection. The specific solutions are as follows:

[0006] A Bluetooth controller with multiple sensing heads comprises a zero-crossing detection and PUSH dimming detection combination circuit respectively electrically connected to an AC input circuit and a switching power supply circuit, and also comprises a Bluetooth chip circuit electrically connected to the zero-crossing detection and PUSH dimming detection combination circuit and the switching power supply circuit, wherein the Bluetooth chip circuit is respectively electrically connected to a relay switch circuit, a dimming circuit, and a sensing head interface circuit, wherein the relay switch circuit and the dimming circuit are respectively electrically connected to a load and the switching power supply circuit; the sensing head interface circuit comprises an external sensing head interface and an interface matching circuit, wherein the external sensing head interface and the interface matching circuit are respectively electrically connected to the switching power supply circuit; and the interface matching circuit is an infrared sensing head matching circuit or a microwave sensing head matching circuit.

[0007] Further, the zero-crossing detection and PUSH dimming detection combined circuit includes: the positive electrode of diode D6 electrically connected to the neutral line of the AC input circuit. The negative electrode of diode D6 is sequentially connected in series with resistors R7, R8, and R9. The other end of resistor R9 is simultaneously electrically connected to pin 1 of optocoupler U5, one end of resistor R10, and the negative electrode of diode D8. The other end of resistor R10 and pin 2 of optocoupler U5 are simultaneously grounded. It also includes a PUSH switch with one end electrically connected to the live wire of the AC input circuit. The other end of the PUSH switch is electrically connected to the positive electrode of diode D7. The negative electrode of diode D7 is sequentially connected in series with resistors R11, R12, and R13. The other end of resistor R13 is simultaneously electrically connected to one end of capacitor C17 and resistor R14. The other end of resistor R14 is electrically connected to the positive electrode of diode D8. The other end of capacitor C17 is grounded. It further includes a resistor R15 with one end electrically connected to the +3.3V power supply of the switching power supply circuit. The other end of resistor R15 is simultaneously electrically connected to pin 4 of optocoupler U5 and one end of capacitor C18 and is sent as the XW signal output to pin 11 of Bluetooth chip circuit U7. Pin 3 of optocoupler U5 and the other end of capacitor C18 are simultaneously grounded.

[0008] Further, the relay switch circuit includes: one end of the relay coil and the negative electrode of diode D5 are simultaneously electrically connected to the +12V power supply of the switching power supply circuit. The other end of the relay coil and the positive electrode of diode D5 are simultaneously electrically connected to the collector of triode Q2. One end of relay switch K1 is electrically connected to the LL contact point of the output end of fuse F1 of the AC input circuit. The other end of relay switch K1 is electrically connected to the power supply end L' of the load. The base of triode Q2 is electrically connected to one end of resistor R16. The other end of resistor R16 is electrically connected to one end of resistor R17 and is electrically connected to the RLY control signal of pin 13 of Bluetooth chip circuit U7. The emitter of triode Q2 and the other end of resistor R17 are simultaneously grounded.

[0009] Further, the dimming circuit includes: one end of a resistor R19 is electrically connected to the DIM control signal of the 17th pin of the Bluetooth chip circuit U7, and the other end of the resistor R19 is simultaneously electrically connected to one end of a capacitor C20 and the 3rd pin of an integrated circuit U6A; the 8th pin of the integrated circuit U6A and one end of a capacitor C21 are simultaneously electrically connected to the +12V power supply of the switching power supply circuit; the 2nd pin of the integrated circuit U6A is simultaneously electrically connected to the 1st pin of U6A, one end of a resistor R20, one end of a capacitor C22, and the 6th pin of an integrated circuit U6B; the other end of the capacitor C22 is simultaneously electrically connected to one ends of resistors R22 and R23 and the 5th pin of the integrated circuit U6B; the other end of R23 is simultaneously electrically connected to one end of a resistor R24 and the collector of a triode Q3 and serves as the dimming +10V output terminal; the emitter of the triode Q3 is grounded and serves as the dimming GND ground terminal; the other end of the resistor R20 is electrically connected to one end of a capacitor C23; the other end of C23 is simultaneously electrically connected to one ends of a resistor R21, a capacitor C24, and the base of the triode Q3; the other end of the resistor R21 is electrically connected to the 7th pin of the integrated circuit U6B; the other end of the capacitor C24 is electrically connected to the other end of the resistor R24; the other ends of the capacitors C20 and C21, the resistor R22, and the 4th pin of the integrated circuit U6A are grounded; the collector of the triode Q3 is electrically connected to the +12V power supply of the switching power supply circuit through a resistor R25; the dimming +10V output terminal and the dimming GND ground terminal are electrically connected to the dimming control pin of the load through a socket wire CON2.

[0010] Further, the external induction head interface includes: a plug RJ11. One end of the plug RJ11 is electrically connected to the FYD bias signal of the 15th pin of the Bluetooth chip circuit U7 after being serially connected with a resistor R18. The 1st pin of the plug RJ11 is electrically connected to the SBT identification signal of the 5th pin of the Bluetooth chip circuit U7. The 2nd pin of the plug RJ11 is electrically connected to the induction head signal processing end of the 2nd pin of the Bluetooth chip circuit U7. The 3rd pin of the plug RJ11 is grounded. The 5th pin of the plug RJ11 is electrically connected to the +5V power supply of the switching power supply circuit. The 4th pin of the plug RJ11 is electrically connected to the PD1 signal of the 3rd pin of the Bluetooth chip circuit U7. The 6th pin of the plug RJ11 is electrically connected to the PD2 signal of the 4th pin of the Bluetooth chip circuit U7.

[0011] Further, the infrared sensor head matching circuit includes: a socket RJ11-1 electrically connected to the plug RJ11. The 1st pin of the socket RJ11-1 is grounded through a resistor R38. The 1st to 6th pins of the socket RJ11-1 correspond to the 1st to 6th pins of the plug RJ11 one by one. It also includes a resistor R30 with one end electrically connected to the +5V power supply of the switching power supply circuit. The other end of the resistor R30 is simultaneously electrically connected to one ends of a resistor R31, capacitors C34 and C33, the positive electrode of the photovoltaic cell light sensor PD3, and the 3rd pin of the operational amplifier U8. The other end of the capacitor C33 is simultaneously electrically connected to the negative electrode of the photovoltaic cell light sensor PD3, the 4th pin of the operational amplifier U8, and one ends of a resistor R32 and a capacitor C32. The other ends of the resistor R32 and the capacitor C32 are simultaneously electrically connected to the 1st pin of the operational amplifier U8 and one end of a resistor R39. The other end of the resistor R39 is simultaneously electrically connected to one ends of a capacitor C31, resistors R41 and R40. The other ends of the capacitor C31, C34, the resistor R41, R31, and the 2nd pin of the operational amplifier U8 are grounded. The other end of the resistor R40 is electrically connected to the 4th pin of the socket RJ11-1.

[0012] Further, the microwave sensor head matching circuit includes: a socket RJ11-2 electrically connected to the plug RJ11. The 1st pin of the socket RJ11-2 is grounded through a resistor R37. The 1st to 6th pins of the socket RJ11-2 correspond to the 1st to 6th pins of the plug RJ11 one by one. It also includes a resistor R33 with one end electrically connected to the 4th pin of the socket RJ11-2. The other end of the resistor R33 is simultaneously electrically connected to one ends of a capacitor C40, a resistor R34, and the negative electrode of the photosensitive tube PD1A. The positive electrode of the photosensitive tube PD1A is simultaneously electrically connected to the positive electrodes of the photosensitive tubes PD1B and the zener diode Z1. The negative electrode of the zener diode Z1 is electrically connected to the +5V power supply of the switching power supply circuit. The negative electrode of the photosensitive tube PD1B is simultaneously electrically connected to one ends of resistors R35, R36, and a capacitor C30. The other end of the resistor R36 is electrically connected to the 6th pin of the socket RJ11-2. The other ends of the capacitor C30, C40, the resistors R35, and R34 are grounded.

[0013] Further, the model of the Bluetooth chip circuit U7 is NRF52832-QFAA-R.

[0014] Further, the integrated circuits U6A and U6B are combined into one integrated circuit U6, and its model is LM358XL.

[0015] Further, the model of the operational amplifier U8 is SGM321BYN5.

[0016] In summary, adopting the technical solution of the present utility model has the following beneficial effects:

[0017] The Bluetooth controller of this solution is compatible with infrared sensors and microwave sensors. When different sensors are used, only one matching circuit needs to be swapped to automatically identify different sensors. The software, hardware, and production debugging processes of the entire solution are unified. This solution also optimizes and integrates the overall circuit unit, significantly reducing the hardware volume, achieving product compatibility, flatness, and aesthetics, improving production efficiency, and reducing procurement and production costs. It also provides great convenience for later product maintenance and services. The Bluetooth chip in this solution is equipped with an intelligent control program. Through the mobile software APP, users can set the relay disconnection and closure, induction sensitivity, induction delay, standby delay, dimming brightness, scene mode, and light sensor settings of the product, facilitating and meeting the personalized requirements and friendly experiences of different users. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings in the following description are only a part of the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a block diagram of the Bluetooth controller with multiple sensors of the present invention;

[0020] Figure 2 It is a circuit diagram of the AC input circuit, switching power supply circuit, zero-crossing detection, and PUSH dimming detection combination of the present invention;

[0021] Figure 3 It is a circuit diagram of the Bluetooth chip of the present invention;

[0022] Figure 4 It is a circuit diagram of the relay switch of the present invention;

[0023] Figure 5 It is a dimming circuit diagram of the present invention;

[0024] Figure 6 It is an external sensor interface diagram of the present invention;

[0025] Figure 7 It is an infrared sensor matching circuit diagram of the present invention;

[0026] Figure 8 It is a microwave sensor matching circuit diagram of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] As Figures 1 to 8 shown, the Bluetooth controller with multiple induction heads includes a zero-crossing detection and PUSH dimming detection combined circuit respectively electrically connected to an AC input circuit and a switching power supply circuit, and further includes a Bluetooth chip circuit electrically connected to the zero-crossing detection and PUSH dimming detection combined circuit and the switching power supply circuit. The Bluetooth chip circuit is respectively electrically connected to a relay switch circuit, a dimming circuit, and an induction head interface circuit. The relay switch circuit and the dimming circuit are respectively electrically connected to a load and the switching power supply circuit. The induction head interface circuit includes an external induction head interface and an interface matching circuit, and the external induction head interface and the interface matching circuit are respectively electrically connected to the switching power supply circuit. The interface matching circuit is an infrared induction head matching circuit or a microwave induction head matching circuit, and one of them is selected according to actual needs to cooperate with the corresponding induction head (such as an infrared induction head or a microwave induction head). The infrared induction head or the microwave induction head belongs to the prior art, and its specific model and working principle will not be elaborated herein.

[0029] Specifically, the zero-crossing detection and PUSH dimming detection combined circuit includes: the positive electrode of diode D6 electrically connected to the neutral line N of the AC input circuit, the negative electrode of diode D6 is successively connected in series with resistors R7, R8, and R9, and the other end of resistor R9 is simultaneously electrically connected to pin 1 of optocoupler U5, one end of resistor R10, and the negative electrode of diode D8. The other end of resistor R10 and pin 2 of optocoupler U5 are simultaneously grounded. It also includes a PUSH switch with one end electrically connected to the live wire L of the AC input circuit, the other end of the PUSH switch is electrically connected to the positive electrode of diode D7, the negative electrode of diode D7 is successively connected in series with resistors R11, R12, and R13, the other end of resistor R13 is simultaneously electrically connected to one end of capacitor C17 and resistor R14, the other end of resistor R14 is electrically connected to the positive electrode of diode D8, and the other end of capacitor C17 is grounded. It further includes a resistor R15 with one end electrically connected to the +3.3V power supply of the switching power supply circuit, the other end of resistor R15 is simultaneously electrically connected to pin 4 of optocoupler U5 and one end of capacitor C18 and is sent as the XW signal output to pin 11 of the Bluetooth chip circuit U7. Pin 3 of optocoupler U5 and the other end of capacitor C18 are simultaneously grounded. The zero-crossing detection and PUSH dimming detection combined circuit has the advantages of saving components, saving space, being compatible with zero-crossing detection, PUSH dimming detection, and transmitting multiple PUSH pressing methods (detailed below). The optocoupler U5 can be selected as EL1018(TA) or other alternative models. The XW signal output includes two outputs: zero-crossing detection and PUSH dimming detection.

[0030] The working process of zero-crossing detection is as follows: When the PUSH switch is not pressed manually, the sine wave of the neutral line N of the normal AC input is half-wave rectified by diode D6, and after being stepped down by resistors R7, R8, and R9 and divided by resistor R10, it becomes multiple positive half-sine waves with a fixed interval (the fixed interval period is zero level). The width of the bottom of the positive half-sine wave is equal to the width of the fixed interval). When the positive half-sine wave is input to pin 1 of optocoupler U5, the optocoupler U5 conducts, and pin 4 of the optocoupler U5 is at zero level, that is, the XW signal output is at zero level. When the zero level during the fixed interval is input to pin 1 of optocoupler U5, the optocoupler U5 cuts off, and pin 4 of the optocoupler U5 is pulled up to a high level by the resistor through +3.3V, that is, the XW signal output is at a high level. That is to say, after multiple positive half-sine waves with multiple fixed intervals pass through pin 1 of the optocoupler U5, a square wave with a fixed interval is output at pin 4 of the optocoupler U5. That is, the XW signal output of zero-crossing detection is a square wave, which is provided to the Bluetooth chip circuit to detect the phase change of the AC input (i.e., the mains power).

[0031] The working process of PUSH dimming detection is as follows: When someone presses the PUSH switch, the live wire L sine wave of the normal AC input is half-wave rectified by the diode D7, stepped down by the resistors R11, R12, and R13, filtered by the capacitor C17 to become a DC high level, and then sent to the 1st pin of the optocoupler U5 through the resistor R14 and the anti-backflow diode D8, causing the optocoupler U5 to conduct. The secondary of the optocoupler U5 also conducts accordingly. The 4th pin of the optocoupler U5 is at zero level, that is, the XW signal output is zero at this time and there is no waveform output. That is to say, the XW signal output is zero when the PUSH switch is pressed. It should be noted that the PUSH switch has three modes: single click, double click, and long press. Since the pressing duration of the PUSH switch in these three modes is much longer than the period of the AC sine wave, the waveform of the XW signal output will have obvious differences from the zero-crossing detection waveform during any pressing of the PUSH switch. Therefore, the Bluetooth chip circuit can identify the three modes of single click, double click, and long press of the PUSH switch and perform relevant control on the load.

[0032] Specifically, the relay switch circuit includes: One end of the relay coil and the negative electrode of the diode D5 are simultaneously electrically connected to the +12V power supply of the switching power supply circuit. The other end of the relay coil and the positive electrode of the diode D5 are simultaneously electrically connected to the collector of the triode Q2. One end of the relay switch K1 is electrically connected to the output terminal LL contact of the fuse F1 in the AC input circuit, and the other end of the relay switch K1 is electrically connected to the power supply terminal L' of the load. The base of the triode Q2 is electrically connected to one end of the resistor R16, and the other end of the resistor R16 is electrically connected to one end of the resistor R17 and is electrically connected to the RLY control signal of the 13th pin of the Bluetooth chip circuit U7. The emitter of the triode Q2 and the other end of the resistor R17 are simultaneously grounded. When the RLY control signal of the 13th pin of the Bluetooth chip circuit U7 is at a high level, the triode Q2 conducts, the relay coil is energized to work, the relay switch K1 is attracted, and the load is energized to work. When the RLY control signal of the 13th pin of the Bluetooth chip circuit U7 is at a low level, the triode Q2 is cut off, the relay coil is de-energized, the relay switch K1 is disconnected, and the load is de-energized and does not work. In order to prevent the relay coil from instantaneously generating a high pulse that breaks through the triode Q2 when the triode Q2 is cut off, the diode D5 plays a role in protecting against the backrush voltage. The diode D5 and the relay coil form a loop to absorb this high pulse energy.

[0033] Specifically, the dimming circuit includes: one end of a resistor R19 is electrically connected to the DIM control signal of the 17th pin of a Bluetooth chip circuit U7, and the other end of the resistor R19 is simultaneously electrically connected to one end of a capacitor C20 and the 3rd pin of an integrated circuit U6A. The 8th pin of the integrated circuit U6A and one end of a capacitor C21 are simultaneously electrically connected to the +12V power supply of a switching power supply circuit. The 2nd pin of the integrated circuit U6A is simultaneously electrically connected to the 1st pin of U6A, one end of a resistor R20, one end of a capacitor C22, and the 6th pin of an integrated circuit U6B. The other end of the capacitor C22 is simultaneously electrically connected to one ends of resistors R22 and R23 and the 5th pin of the integrated circuit U6B. The other end of R23 is simultaneously electrically connected to one end of a resistor R24 and the collector of a triode Q3 and serves as a dimming +10V output terminal. The emitter of the triode Q3 is grounded and serves as a dimming GND terminal. The other end of the resistor R20 is electrically connected to one end of a capacitor C23. The other end of C23 is simultaneously electrically connected to one ends of a resistor R21, a capacitor C24, and the base of the triode Q3. The other end of the resistor R21 is electrically connected to the 7th pin of the integrated circuit U6B. The other end of the capacitor C24 is electrically connected to the other end of the resistor R24. The other ends of the capacitors C20 and C21, the resistor R22, and the 4th pin of the integrated circuit U6A are grounded. The collector of the triode Q3 is electrically connected to the +12V power supply of the switching power supply circuit through a resistor R25. The dimming +10V output terminal and the dimming GND terminal are electrically connected to the dimming control pin (not shown in the figure) of the load through a socket wire CON2. The dimming circuit converts the DIM control signal of the 17th pin of the Bluetooth chip circuit U7 from a small signal (PWM signal) into a dimming signal of 0 - 10V that can directly control the load through two-stage amplifiers composed of the integrated circuit U6A and the integrated circuit U6B.

[0034] Specifically, the external induction head interface includes: a plug RJ11. One end of the 1st pin of the plug RJ11 is electrically connected to the FYD bias signal of the 15th pin of the Bluetooth chip circuit U7 after being connected in series with a resistor R18. The 1st pin of the plug RJ11 is electrically connected to the SBT identification signal of the 5th pin of the Bluetooth chip circuit U7. The 2nd pin of the plug RJ11 is electrically connected to the induction head signal processing end of the 2nd pin of the Bluetooth chip circuit U7. The 3rd pin of the plug RJ11 is grounded. The 5th pin of the plug RJ11 is electrically connected to the +5V power supply of the switching power supply circuit. The 4th pin of the plug RJ11 is electrically connected to the PD1 signal of the 3rd pin of the Bluetooth chip circuit U7. The 6th pin of the plug RJ11 is electrically connected to the PD2 signal of the 4th pin of the Bluetooth chip circuit U7.

[0035] Specifically, the infrared sensor head matching circuit includes: a socket RJ11-1 electrically connected to the plug RJ11. The pin 1 of the socket RJ11-1 is grounded through a resistor R38. The pins 1-6 of the socket RJ11-1 correspond to the pins 1-6 of the plug RJ11 one by one. It also includes a resistor R30 with one end electrically connected to the +5V power supply of the switching power supply circuit. The other end of the resistor R30 is simultaneously connected to one ends of a resistor R31, capacitors C34 and C33, the positive electrode of the photovoltaic cell light sensor head PD3, and the pin 3 of the operational amplifier U8. The other end of the capacitor C33 is simultaneously connected to the negative electrode of the photovoltaic cell light sensor head PD3, the pin 4 of the operational amplifier U8, and one ends of a resistor R32 and a capacitor C32. The other ends of the resistor R32 and the capacitor C32 are simultaneously connected to the pin 1 of the operational amplifier U8 and one end of a resistor R39. The other end of the resistor R39 is simultaneously connected to one ends of a capacitor C31, resistors R41 and R40. The other ends of the capacitor C31, C34, the resistor R41, R31, and the pin 2 of the operational amplifier U8 are grounded. The other end of the resistor R40 is electrically connected to the pin 4 of the socket RJ11-1. The infrared sensor head matching circuit has two functions: matching and detecting ambient light. The matching principle of the infrared sensor head matching circuit is as follows: The 3.3V level of the FYD bias signal at the pin 15 of the Bluetooth chip circuit U7 is divided by the voltage division circuit composed of the resistor R18 and the resistor R38, and then sent to the pin 5 of the Bluetooth chip circuit U7 as the input of the SBT identification signal. The Bluetooth chip circuit U7 automatically identifies that this matching circuit is an infrared sensor head matching circuit for the infrared sensor head according to the magnitude of the divided voltage value. The infrared sensor head matching circuit is provided with a photovoltaic cell light sensor head PD3, which can intelligently detect the ambient light of the load's usage environment. After the detected ambient light is amplified by the operational amplifier U8 and sent to the pin 3 of the Bluetooth chip circuit U7 as the input of the PD1 signal, the Bluetooth chip circuit U7 intelligently controls the dimming of the load in combination with the detected ambient light conditions.

[0036] Specifically, the microwave sensor head matching circuit includes: a socket RJ11-2 electrically connected to the plug RJ11. The first pin of the socket RJ11-2 is grounded through a resistor R37. The first to sixth pins of the socket RJ11-2 correspond to the first to sixth pins of the plug RJ11 one by one. It also includes a resistor R33 with one end electrically connected to the fourth pin of the socket RJ11-2. The other end of the resistor R33 is simultaneously electrically connected to one end of a capacitor C40, one end of a resistor R34, and the negative electrode of a photosensitive tube PD1A. The positive electrode of the photosensitive tube PD1A is simultaneously electrically connected to the positive electrode of a photosensitive tube PD1B and the positive electrode of a voltage stabilizing diode Z1. The negative electrode of the voltage stabilizing diode Z1 is electrically connected to the +5V power supply of the switching power supply circuit. The negative electrode of the photosensitive tube PD1B is simultaneously electrically connected to one ends of resistors R35, R36, and a capacitor C30. The other end of the resistor R36 is electrically connected to the sixth pin of the socket RJ11-2. The other ends of the capacitors C30, C40, and the resistors R35, R34 are grounded. The microwave sensor head matching circuit has two functions: matching and detecting ambient light. The matching principle of the microwave sensor head matching circuit is as follows: The 3.3V level of the FYD bias signal at the 15th pin of the Bluetooth chip circuit U7 is divided by the voltage dividing circuit composed of the resistor R18 and the resistor R37, and then sent to the 5th pin of the Bluetooth chip circuit U7 as the SBT identification signal input. The Bluetooth chip circuit U7 automatically identifies this matching circuit as the microwave sensor head matching circuit for the microwave sensor head according to the magnitude of the divided voltage value. A photosensitive tube PD1A is provided in the microwave sensor head matching circuit to detect the ordinary spectrum in the ambient light, and a photosensitive tube PD1B is used to detect the infrared spectrum in the ambient light. The ordinary spectrum voltage value is sent to the 3rd pin of the Bluetooth chip circuit U7 as the PD1 signal input, and the infrared spectrum voltage value is sent to the 4th pin of the Bluetooth chip circuit U7 as the PD2 signal input. Then, the Bluetooth chip circuit U7 intelligently controls the dimming of the load in combination with the detected ambient light conditions.

[0037] Specifically, the model of the Bluetooth chip circuit U7 is NRF52832-QFAA-R. When this solution is in use, either an infrared sensor head or a microwave sensor head is used, and the two sensor heads are not used simultaneously. Therefore, the sensor head signal processing terminal at the 2nd pin of the Bluetooth chip circuit U7 only processes the signal of any one of the sensor heads.

[0038] Specifically, the integrated circuit U6A and the integrated circuit U6B are combined into an integrated circuit U6, and its model is LM358XL, or other alternative models.

[0039] Further, the model of the operational amplifier U8 is SGM321BYN5, or other alternative models.

[0040] The Bluetooth controller with multiple sensor heads of this solution is installed in the lamp box, and is equipped with an infrared sensor head or a microwave sensor head to form a complete product (not shown in the figure), and this product is used in combination with a load, that is, a lamp.

[0041] In summary, adopting the technical solution of the present utility model has the following beneficial effects:

[0042] The Bluetooth controller of this solution can be compatible with infrared sensors and microwave sensors. When the sensors are different, only one matching circuit needs to be replaced to automatically identify different sensors. The software, hardware, and production debugging processes of the entire solution are unified. This solution also optimizes and integrates the overall circuit unit, fully reducing the hardware volume, achieving product compatibility, flatness, and aesthetics, improving production efficiency, reducing procurement and production costs, and providing great convenience for later product maintenance and services. The Bluetooth chip in this solution is equipped with an intelligent control program. Through the mobile phone software APP, the user can set the relay disconnection and closing, induction sensitivity, induction delay, waiting delay, dimming brightness, scene mode, and light sensor settings of the product, which is convenient and meets the personalized requirements and friendly experience of different users.

[0043] The above-described embodiments do not constitute a limitation on the protection scope of the technical solution. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the above embodiments shall be included in the protection scope of the technical solution.

Claims

1. A Bluetooth controller with multiple sensors, characterized in that: It includes a zero-crossing detection and PUSH dimming detection combined circuit respectively electrically connected to the AC input circuit and the switching power supply circuit, and also includes a Bluetooth chip circuit electrically connected to the zero-crossing detection and PUSH dimming detection combined circuit and the switching power supply circuit. The Bluetooth chip circuit is respectively electrically connected to a relay switch circuit, a dimming circuit, and an induction head interface circuit. The relay switch circuit and the dimming circuit are respectively electrically connected to the load and the switching power supply circuit; the induction head interface circuit includes an external induction head interface and an interface matching circuit, and the external induction head interface and the interface matching circuit are respectively electrically connected to the switching power supply circuit; the interface matching circuit is an infrared induction head matching circuit or a microwave induction head matching circuit.

2. The multi-sensor Bluetooth controller according to claim 1, characterized in that, The zero-crossing detection and PUSH dimming detection combined circuit includes: the positive electrode of diode D6 electrically connected to the zero line of the AC input circuit. The negative electrode of diode D6 is successively connected in series with resistors R7, R8, and R9. The other end of resistor R9 is simultaneously electrically connected to pin 1 of optocoupler U5, one end of resistor R10, and the negative electrode of diode D8. The other end of resistor R10 and pin 2 of optocoupler U5 are simultaneously grounded. It also includes a PUSH switch with one end electrically connected to the live wire of the AC input circuit, and the other end of the PUSH switch is electrically connected to the positive electrode of diode D7. The negative electrode of diode D7 is successively connected in series with resistors R11, R12, and R13. The other end of resistor R13 is simultaneously electrically connected to one end of capacitor C17 and one end of resistor R14. The other end of resistor R14 is electrically connected to the positive electrode of diode D8, and the other end of capacitor C17 is grounded. It further includes a resistor R15 with one end electrically connected to the +3.3V power supply of the switching power supply circuit. The other end of resistor R15 is simultaneously electrically connected to pin 4 of optocoupler U5 and one end of capacitor C18 and serves as the output of the XW signal to be sent to pin 11 of Bluetooth chip circuit U7. Pin 3 of optocoupler U5 and the other end of capacitor C18 are simultaneously grounded.

3. The multi-sensor Bluetooth controller according to claim 1, wherein, The relay switch circuit includes: one end of the relay coil and the negative electrode of diode D5 are simultaneously electrically connected to the +12V power supply of the switching power supply circuit. The other end of the relay coil and the positive electrode of diode D5 are simultaneously electrically connected to the collector of triode Q2. One end of relay switch K1 is electrically connected to the output terminal LL contact of fuse F1 of the AC input circuit, and the other end of relay switch K1 is electrically connected to the power supply terminal L' of the load. The base of triode Q2 is electrically connected to one end of resistor R16. The other end of resistor R16 is electrically connected to one end of resistor R17 and is electrically connected to the RLY control signal of pin 13 of Bluetooth chip circuit U7. The emitter of triode Q2 and the other end of resistor R17 are simultaneously grounded.

4. The multi-sensor Bluetooth controller according to claim 1, wherein, The dimming circuit includes: one end of a resistor R19 is electrically connected to the DIM control signal of the 17th pin of a Bluetooth chip circuit U7, and the other end of the resistor R19 is simultaneously electrically connected to one end of a capacitor C20 and the 3rd pin of an integrated circuit U6A; the 8th pin of the integrated circuit U6A and one end of a capacitor C21 are simultaneously electrically connected to the +12V power supply of a switching power supply circuit; the 2nd pin of the integrated circuit U6A is simultaneously electrically connected to the 1st pin of U6A, one end of a resistor R20, one end of a capacitor C22, and the 6th pin of an integrated circuit U6B; the other end of the capacitor C22 is simultaneously electrically connected to one ends of resistors R22 and R23 and the 5th pin of the integrated circuit U6B; the other end of R23 is simultaneously electrically connected to one end of a resistor R24 and the collector of a triode Q3 and serves as the dimming +10V output terminal; the emitter of the triode Q3 is grounded and serves as the dimming GND terminal; the other end of the resistor R20 is electrically connected to one end of a capacitor C23; the other end of C23 is simultaneously electrically connected to one ends of a resistor R21, a capacitor C24, and the base of the triode Q3; the other end of the resistor R21 is electrically connected to the 7th pin of the integrated circuit U6B; the other end of the capacitor C24 is electrically connected to the other end of the resistor R24; the other ends of the capacitors C20 and C21, the resistor R22, and the 4th pin of the integrated circuit U6A are grounded; the collector of the triode Q3 is electrically connected to the +12V power supply of the switching power supply circuit through a resistor R25; the dimming +10V output terminal and the dimming GND terminal are electrically connected to the dimming control pin of a load through a socket wire CON2.

5. The multi-sensor Bluetooth controller according to claim 1, characterized in that, The external induction head interface includes: a plug RJ11. One end of the plug RJ11 is electrically connected to the FYD bias signal of the 15th pin of the Bluetooth chip circuit U7 after being connected in series with a resistor R18. The 1st pin of the plug RJ11 is electrically connected to the SBT identification signal of the 5th pin of the Bluetooth chip circuit U7. The 2nd pin of the plug RJ11 is electrically connected to the induction head signal processing end of the 2nd pin of the Bluetooth chip circuit U7. The 3rd pin of the plug RJ11 is grounded. The 5th pin of the plug RJ11 is electrically connected to the +5V power supply of the switching power supply circuit. The 4th pin of the plug RJ11 is electrically connected to the PD1 signal of the 3rd pin of the Bluetooth chip circuit U7. The 6th pin of the plug RJ11 is electrically connected to the PD2 signal of the 4th pin of the Bluetooth chip circuit U7.

6. The multi-sensor Bluetooth controller according to claim 5, wherein The infrared sensor head matching circuit includes: a socket RJ11-1 electrically connected to the plug RJ11. The 1st pin of the socket RJ11-1 is grounded through a resistor R38. The 1-6 pins of the socket RJ11-1 correspond to the 1-6 pins of the plug RJ11 one by one. It also includes a resistor R30 with one end electrically connected to the +5V power supply of the switching power supply circuit. The other end of the resistor R30 is simultaneously electrically connected to one end of a resistor R31, capacitors C34 and C33, the positive electrode of the photovoltaic cell light sensor PD3, and the 3rd pin of the operational amplifier U8. The other end of the capacitor C33 is simultaneously electrically connected to the negative electrode of the photovoltaic cell light sensor PD3, the 4th pin of the operational amplifier U8, and one end of resistors R32 and C32. The other ends of the resistors R32 and C32 are simultaneously electrically connected to the 1st pin of the operational amplifier U8 and one end of a resistor R39. The other end of the resistor R39 is simultaneously electrically connected to one end of capacitors C31, resistors R41 and R40. The other ends of the capacitors C31, C34, resistor R41, R31, and the 2nd pin of the operational amplifier U8 are grounded. The other end of the resistor R40 is electrically connected to the 4th pin of the socket RJ11-1.

7. The multi-sensor Bluetooth controller according to claim 5, wherein The microwave sensor head matching circuit includes: a socket RJ11-2 electrically connected to the plug RJ11. The 1st pin of the socket RJ11-2 is grounded through a resistor R37. The 1-6 pins of the socket RJ11-2 correspond to the 1-6 pins of the plug RJ11 one by one. It also includes a resistor R33 with one end electrically connected to the 4th pin of the socket RJ11-2. The other end of the resistor R33 is simultaneously electrically connected to one end of a capacitor C40, a resistor R34, and the negative electrode of the photosensitive tube PD1A. The positive electrode of the photosensitive tube PD1A is simultaneously electrically connected to the positive electrode of the photosensitive tube PD1B and the positive electrode of the voltage regulator tube Z1. The negative electrode of the voltage regulator tube Z1 is electrically connected to the +5V power supply of the switching power supply circuit. The negative electrode of the photosensitive tube PD1B is simultaneously electrically connected to one end of resistors R35, R36, and a capacitor C30. The other end of the resistor R36 is electrically connected to the 6th pin of the socket RJ11-2. The other ends of the capacitor C30, C40, resistors R35, and R34 are grounded.

8. The multi-sensor Bluetooth controller according to any one of claims 2-5, characterized in that: The model of the Bluetooth chip circuit U7 is NRF52832-QFAA-R.

9. The multi-sensor Bluetooth controller according to claim 4, wherein: The integrated circuit U6A and the integrated circuit U6B are combined into an integrated circuit U6, and its model is LM358XL.

10. The multi-sensor head Bluetooth controller according to claim 6, wherein: The model of the operational amplifier U8 is SGM321BYN5.

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