Bluetooth positioning dimming control circuit and intelligent navigation lamp

Abstract

The utility model discloses a Bluetooth positioning dimming control circuit and an intelligent navigation lamp. The Bluetooth positioning dimming control circuit comprises a power supply module, a constant voltage module, an induction module, a Bluetooth positioning module, a constant current module and a light source module. The power supply module converts commercial power into direct current, the constant voltage module outputs stable voltage to the induction module and the Bluetooth positioning module, and the Bluetooth positioning module adopts an SoC chip supporting a Bluetooth protocol, a beacon function and Mesh networking and receives a Bluetooth signal, an induction signal or a Mesh instruction to generate a light control instruction. The constant-current module drives the light source to adjust brightness according to the light control instruction. According to the utility model, the problems of unstable power supply, insufficient signal coverage and low function integration level of the traditional scheme are solved, and the system has the characteristics of low maintenance cost, small positioning error and optimized energy consumption.

Description

TECHNICAL FIELD

[0001] The utility model relates to lighting lamps and lanterns technical field, especially in a kind of Bluetooth positioning light control circuit and intelligent navigation lamps and lanterns. BACKGROUND

[0002] Current indoor positioning system adopts passive Bluetooth beacon scheme, and it is simplified to install although relying on lithium sub-battery power supply, but there are following defects:

[0003] Power supply stability is insufficient: battery life is short and needs to be frequently replaced, leading to high annual maintenance cost of single lamp;

[0004] Signal coverage is limited: to prolong battery life, transmission frequency needs to be reduced, leading to low positioning accuracy of Bluetooth beacon in complex scene;

[0005] Low function integration: positioning module and lighting control are separated in existing scheme, and lamp density adaptive adjustment and sensing priority control cannot be realized, and traditional Mesh networking also needs to be connected with special gateway.

[0006] The passive Bluetooth beacon scheme used in current indoor positioning system has the technical problems of insufficient power supply stability, limited signal coverage, single function and poor expansibility, and an indoor positioning solution with high integration, low maintenance cost, high positioning accuracy and adaptive adjustment capability is urgently needed. CONTENT OF UTILITY MODEL

[0007] The main purpose of the utility model is to provide a kind of Bluetooth positioning light control circuit and intelligent navigation lamps and lanterns, to solve the technical problems of insufficient power supply stability, limited signal coverage and low function integration of indoor positioning system in prior art.

[0008] In order to realize the above-mentioned purpose, the utility model discloses a first aspect proposes a kind of Bluetooth positioning dimming control circuit, comprising: power module, constant voltage module, sensing module, Bluetooth positioning module and constant current module, the power module input end connects commercial power, output end is connected constant voltage module and constant current module respectively, for converting the 220V alternating current of commercial power into direct current;The constant voltage module input end connects the power module, output end is connected sensing module and Bluetooth positioning module respectively, for providing stable direct current voltage;The sensing module connects constant voltage module and Bluetooth positioning module, for detecting activity in area and sending trigger signal to Bluetooth positioning module;The Bluetooth positioning module includes the SoC chip of supporting Bluetooth and beacon function The power pin of the SoC chip is connected with the output end of the constant voltage module, the communication pin of the SoC chip is connected with the output end of the sensing module, the PWM pin of the SoC chip is connected with the dimming interface of the constant current module, for receiving external control signal and the trigger signal of sensing module, corresponding light control instruction is generated and is sent to constant current module by PWM pin;The constant current module input end connects the power module, output end connects light source, receives the light control instruction by dimming interface, for driving light source and adjusting light source brightness or switch state according to the light control instruction.

[0009] Preferably, the SoC chip adopts XC6517, integrates Bluetooth, beacon and Mesh networking functions, and is configured to generate corresponding light control instruction according to received Bluetooth control signal, Mesh network instruction or trigger signal of sensing module.

[0010] Preferably, the constant voltage module adopts a step-down constant voltage chip BP8521.

[0011] Preferably, the output end of the constant voltage module is further connected with a three-terminal voltage regulator, for providing secondary voltage stabilization for the Bluetooth positioning module.

[0012] Preferably, the three-terminal voltage regulator is HT7533.

[0013] Preferably, the constant current module adopts a constant current drive chip BP2956, and the dimming interface of the constant current module is connected with the PWM pin of the SoC chip of the Bluetooth positioning module, for adjusting light source brightness according to PWM signal through duty cycle.

[0014] Preferably, the PWM pin of the SoC chip of the Bluetooth positioning module is connected with the dimming interface of the constant current drive chip BP2956 through an RC filter circuit.

[0015] Preferably, the sensing module adopts plug-in terminal connection, and includes at least one of microwave radar sensing module, infrared sensing module, ultrasonic sensing module, light sensing module and sound sensing module.

[0016] Preferably, the power module comprises a rectifier bridge of type MB10F, the AC input of which is connected across a voltage-dependent resistor connected between the live and neutral lines of the mains supply, and the DC output of which is connected in parallel with an electrolytic capacitor connected between the output of the rectifier bridge and ground.

[0017] The utility model discloses a second aspect proposes a kind of intelligent navigation lamps, including the Bluetooth positioning light control circuit as any embodiment of the utility model first aspect is described, and the intelligent navigation lamps are realized positioning, sensing trigger and light adjusting function by the Bluetooth positioning light control circuit.

[0018] The utility model provides a kind of Bluetooth positioning dimming control circuit and intelligent navigation lamp, by power module direct power supply from commercial power, completely eliminate lithium sub battery replacement demand, reduce the single lamp annual maintenance cost, simultaneously, commercial power supply breaks through the limitation that traditional battery scheme is forced to reduce emission frequency (usually≤1Hz) due to power saving, allow bluetooth beacon to emit with high frequency, improve the update speed of signal, expand the coverage radius of signal, and high-frequency signal substantially reduces the influence of multipath interference, to reduce positioning error under complex scene;Personnel activity is detected in real time by induction module, triggers bluetooth positioning module to generate differentiated light control instruction, realizes dynamic lighting accurate control and induction priority control, in the area with someone, through constant current module drive light source module to improve high brightness, in the area without person, switch to basic brightness, to reduce comprehensive energy consumption;The SoC chip of bluetooth positioning module adopts XC6517, and its high-frequency signal emission capability (maximum support 10Hz) significantly reduces the influence of multipath interference, expands the coverage radius of bluetooth beacon, so that positioning system maintains high accuracy in a larger range;Using the Mesh protocol of XC6517 chip, 128 node network can be established without special gateway, realize cross-area lighting linkage, when personnel moves to adjacent area, light control information can be sent through Mesh network to make target lamp of adjacent area light up in advance, improve the intelligence and functional integration of system;Constant voltage module adopts step-down constant voltage chip BP8521, with the characteristics of high efficiency and low power consumption, can stably step-down the direct current voltage output by power module to the working voltage required by bluetooth positioning module and induction module, ensure the stable operation of each module of circuit;The output end of constant voltage module is also connected with three-terminal voltage regulator HT7533, for providing secondary voltage stabilization for bluetooth positioning module, further reduce the influence of voltage fluctuation on bluetooth positioning module, ensure the stability of its working voltage;Constant current module adopts constant current drive chip BP2956, and its dimming interface is connected with the PWM pin of bluetooth positioning module SoC chip, adjusts light source brightness according to PWM signal through duty ratio, realizes stepless regulation of light source brightness;The PWM pin of bluetooth positioning module SoC chip is connected with the dimming interface of constant current drive chip BP2956 through RC filter circuit, can filter high-frequency noise in PWM signal, ensure the stability and accuracy of dimming signal;Power module includes MB10F type rectifier bridge, and the AC input end of rectifier bridge is connected with the voltage-dependent resistor between live wire and neutral wire of commercial power, can absorb surge voltage in commercial power, protect rectifier bridge and rear-end circuit from voltage impact, and the DC output end of rectifier bridge is connected with electrolytic capacitor between the output end of rectifier bridge and ground, can smooth the DC voltage output by rectifier bridge, reduce voltage ripple, ensure the stable operation of each module of circuit;Induction module adopts plug-in terminal connection, supports microwave radar, infrared, ultrasonic, light sensing and sound sensing and various sensors, can be flexibly configured according to actual demand, further expand the application scenarios and functions of circuit.The utility model discloses a bluetooth positioning light control circuit and lamps and lanterns through with the integration of bluetooth positioning module and lighting control module in one, the power supply stability of insufficient, signal coverage is limited and the low difference of function integration degree of existing indoor positioning system are solved technical problems. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, the following will be briefly introduced the drawing needed to be used in the embodiment or prior art description, obviously, the drawing in the following description only some embodiments of the utility model, for the person skilled in the art, under the premise of not paying creative labor, still can obtain other drawings according to the structure shown in these drawings.

[0020] Figure 1 The module distribution schematic diagram of the bluetooth positioning light control circuit of a specific embodiment of the utility model is provided.

[0021] Figure 2 The circuit schematic diagram of power module, constant current module, constant voltage module and induction module of a specific embodiment of the utility model is provided.

[0022] Figure 3 The module and circuit contrast schematic diagram of power module, constant current module, constant voltage module and induction module of a specific embodiment of the utility model is provided.

[0023] Figure 4 The circuit schematic diagram of bluetooth positioning module of a specific embodiment of the utility model is provided.

[0024] Figure 5 The circuit schematic diagram of three-terminal voltage regulator of a specific embodiment of the utility model is provided.

[0025] The realization, functional characteristics and advantages of the utility model will be further described with reference to the drawings by combining the embodiment.

[0026] In the drawings: 1, power module, 2, constant voltage module, 3, induction module, 4, bluetooth positioning module, 5, constant current module, 6, light source module, 7, three-terminal voltage regulator. DETAILED DESCRIPTION

[0027] The technical scheme in the embodiment of the utility model will be clearly and completely described below by combining the drawings in the embodiment of the utility model, obviously, the described embodiment only is a part of the embodiment of the utility model, not all the embodiment. Based on the embodiment in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the scope of the utility model protection.

[0028] It should be noted that if the embodiment of the utility model has the directionality indication such as up, down, left, right, front, back and the like, the directionality indication is only used to explain the relative position relationship, movement condition and the like between the components in a certain specific posture, if the specific posture changes, then the directionality indication also changes accordingly.

[0029] In addition, if the embodiment of the utility model has the description of "first", "second" and the like, the description of "first", "second" and the like is only for the description purpose, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the person skilled in the art, when the combination of the technical solutions appears contradictory or unachievable, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope required by the utility model.

[0030] For example, Figures 1 to 5As shown, the utility model first aspect proposes a kind of Bluetooth positioning dimming control circuit, comprising: power module, constant voltage module, sensing module, Bluetooth positioning module and constant current module, the power module input end connects commercial power, output end is connected constant voltage module and constant current module respectively, for the 220V alternating current of commercial power is converted into direct current;The constant voltage module input end connects the power module, output end is connected sensing module and Bluetooth positioning module respectively, for providing stable direct current voltage;The sensing module connects constant voltage module and Bluetooth positioning module, for detecting activity in area and sending trigger signal to Bluetooth positioning module;The Bluetooth positioning module includes the SoC chip of supporting Bluetooth and beacon function The power pin of the SoC chip connects the output end of constant voltage module, the communication pin of the SoC chip connects the output end of sensing module, the PWM pin of the SoC chip connects the light adjustment interface of constant current module, for receiving external control signal and the trigger signal of sensing module, corresponding light control instruction is generated and is sent to constant current module by PWM pin;The constant current module input end connects the power module, output end connects light source, receives the light control instruction by light adjustment interface, for driving light source and according to the light control instruction adjusting light source brightness or switch state.In some specific embodiments, power module 1 input end connects 220V commercial power, after conversion into direct current, output end is divided into two ways, first road is connected to constant current module 5, second road is connected to constant voltage module 2;Constant voltage module 2 is stabilized to 5V by direct current, and is respectively supplied to sensing module 3 and Bluetooth positioning module 4;Sensing module 3 is connected by GPIO interface Bluetooth positioning module 4, when detecting human movement, sends high level signal;Bluetooth positioning module 4 then integrates the SoC chip of supporting Bluetooth protocol and beacon function, after receiving mobile phone signal, sensing signal or Mesh network instruction, light control instruction is sent to constant current module 5 by PWM interface;Constant current module 5 adjusts output current according to light control instruction, drives light source module 6 to adjust luminaire brightness.

[0031] It can be understood that the utility model discloses a power module 1 is supplied with power for the Bluetooth positioning and lighting system simultaneously through the mains, thereby eliminating the space occupation problem of the battery compartment structure in the traditional split battery scheme, not only effectively reducing the overall thickness of the lamp, simultaneously reducing the additional cost brought by battery maintenance, relative to the traditional battery scheme being forced to reduce the emission frequency (usually ≤1Hz) limited by the power saving demand, the utility model discloses a power supply through the mains, and the constant voltage module 2 is supplied with power to the Bluetooth positioning module 4, greatly improving the power supply efficiency and stability. As a result, the Bluetooth beacon can emit at a high frequency, not only speeding up the signal update speed, expanding the signal coverage range, but also effectively reducing the influence of multipath interference in complex scenes, thereby significantly reducing the positioning error. Through the induction module 3, real-time detection of personnel activities is triggered, and the Bluetooth positioning module 4 generates differentiated light control instructions, realizes dynamic lighting precise control and induction priority control, and in the area with people, the constant current module 5 drives the light source module 6 to improve the high brightness, and in the area without people, switches to the basic brightness, thereby reducing the comprehensive energy consumption.

[0032] Preferably, the SoC chip adopts XC6517, integrates Bluetooth, beacon and Mesh networking functions, and is configured to generate corresponding light control instructions according to the received Bluetooth signal, Mesh network instruction or trigger signal of the induction module 3.

[0033] It can be understood that the traditional scheme relies on dense lamp layout to ensure positioning accuracy, and the utility model discloses a distributed node collaborative computing mode through the built-in Mesh protocol of the SoC chip, which can realize the same positioning accuracy at a larger spacing, and the lamp spacing can be dynamically adjusted, thereby reducing the number of lamps by 30% while ensuring the positioning accuracy. In addition, the induction module 3 and the Bluetooth module in the utility model realize hardware cascading, even in the scene without mobile phone signal, such as special environment such as underground parking lot, microwave radar or infrared sensor can still detect personnel activities and trigger maximum illumination intensity, thereby ensuring that the indoor or parking area has sufficient illumination brightness. In some specific embodiments, the lamp defaults to basic illumination brightness (such as 30% brightness), when the induction module 3 detects personnel activities, the Bluetooth positioning module 4 generates differentiated light control instructions, and the constant current module 5 drives the light source module 6 to switch to the high brightness mode, and in the area without personnel activities, it automatically restores to the basic brightness, thereby reducing the comprehensive energy consumption. In some specific embodiments, with the strong Mesh protocol support capability of the Bluetooth 5.2 chip, the utility model can easily establish a cross-area lighting linkage network containing up to 128 nodes without a dedicated gateway, when personnel move from one area to an adjacent area, the system can send light control instructions in advance through the Mesh network, so that the target lamp is lit in time. This process can be triggered by the induction module 3, or combined with the indoor navigation system to realize more accurate and humanized control effect.

[0034] Preferably, in the present embodiment, the constant voltage module 2 adopts a step-down constant voltage chip BP8521, and those skilled in the art can also select other models of step-down constant voltage chips according to specific application requirements, such as BP2525 constant voltage chip, S7134B isolated constant voltage chip and Hi9204 constant voltage chip, to meet the needs of different scenarios.

[0035] Specifically, BP8521 is a highly integrated non-isolated step-down constant voltage driving chip, which has the characteristics of not requiring external VCC capacitor and loop compensation capacitor, can greatly simplify circuit design and reduce system cost. In addition, BP8521 adopts multi-mode control technology, which can provide excellent constant voltage characteristics under various load conditions, ensuring the stability of the output voltage, thereby providing high-quality power support for the Bluetooth positioning module 4 and the induction module 3. Preferably, the output end of the constant voltage module 2 is also connected to a three-terminal voltage regulator 7 for providing secondary voltage stabilization for the Bluetooth positioning module 4.

[0036] It can be understood that when the constant voltage module 2 needs to power modules with different voltage requirements (such as a 5V induction module and a 3.3V Bluetooth positioning module), a voltage dividing resistor can usually be used for step-down, and a resistor is connected in series for voltage division in the Bluetooth module power supply circuit to reduce 5V to 3.3V. However, the output voltage fluctuates significantly when the load changes, such as a sudden increase in current when the Bluetooth module transmits a signal, causing the voltage difference across the voltage dividing resistor to change, and the actual voltage may drop to below 2.8V. In addition, the continuous heating of the voltage dividing resistor causes energy waste. In some embodiments, the utility model increases a three-terminal voltage regulator 7 for secondary voltage stabilization after the constant voltage module 2, directly outputs 3.3V (error ±2%) required by the Bluetooth module, avoids the voltage instability risk of the voltage dividing resistor scheme, further improves the stability and accuracy of the output voltage, and reduces the impact of load changes or input voltage fluctuations; this design is particularly suitable for Bluetooth positioning modules 4 with high power quality requirements, and can significantly improve the working reliability and performance of the Bluetooth positioning modules 4.

[0037] Preferably, in the present embodiment, the three-terminal voltage regulator 7 adopts HT7533. Those skilled in the art can also select other models of three-terminal voltage regulators according to specific application requirements, such as AMS1117 series suitable for application scenarios requiring low noise and high stability, providing multiple fixed output voltage options (such as 1.8V, 2.5V, 3.3V, etc.) and adjustable versions; the LM7805 three-terminal voltage regulator provides a 5V fixed output voltage, suitable for simple and stable power supply solutions to meet the needs of different scenarios.

[0038] Specifically, HT7533 is a low dropout linear regulator, manufactured by CMOS technology, with extremely low quiescent current and excellent load regulation and line regulation. It can maintain a stable 3.3V output under an input voltage of up to 20V, and only has a slight overshoot during the startup phase, which recovers to the normal value in about 8ms, making HT7533 suitable for use as a secondary voltage stabilizing power supply for the Bluetooth positioning module 4, ensuring that it can obtain accurate and stable power supply under various working conditions. Further, HT7533 adopts SOT-89 packaging (3mm x 3mm), which reduces the board area by 60% compared to the discrete component solution.

[0039] Preferably, the constant current module 5 adopts a constant current drive chip BP2956, and the dimming interface of the constant current module is connected to the PWM pin of the SoC chip of the Bluetooth positioning module 4, and the light source brightness is adjusted by duty cycle according to the PWM signal. Those skilled in the art can also select other models of constant current drive chips according to specific application requirements, such as BP2306HK constant current chip and OC5228 constant current chip, to meet the needs of different scenarios.

[0040] Specifically, BP2956 is a non-isolated step-down constant current driver chip designed specifically for LED applications. It features strong short-circuit protection capability and a high 530V output MOSFET voltage withstand capability. It supports PWM dimming function, which can achieve smooth brightness adjustment by changing the duty cycle of the PWM signal. When applied in the constant current module 5, it not only accurately controls the light source current, ensuring the consistency of lighting effects, but also effectively prevents damage caused by abnormal loads, improving the safety and durability of the entire system. It can be understood that for non-isolated applications, BP2525 can be used as a constant voltage chip, and BP2306HK can be used as a constant current driver chip. This combination can provide stable and efficient voltage and current output, suitable for cost-sensitive and non-electrically isolated application scenarios such as indoor lighting systems. BP2525 is a high-efficiency, low-cost step-down constant voltage chip, while BP2306HK provides precise constant current control to ensure the brightness consistency and stability of the light source. For applications requiring electrical isolation, S7134B can be selected as an isolated constant voltage chip, combined with Hi9204 for secondary constant voltage adjustment, and OC5228 as a constant current driver chip. This combination not only provides reliable electrical isolation, but also ensures the efficient operation of the entire system. S7134B has good isolation performance and high efficiency, suitable for applications in places with high safety standards, such as intelligent lighting systems in commercial buildings or industrial environments. Hi9204 is used to further optimize voltage output, ensuring that the voltage is stable within the required range, while OC5228 provides precise constant current control to ensure the reliability and long life of the lamp. By selecting the appropriate power supply architecture (non-isolated or isolated) and corresponding chip combination, those skilled in the art can flexibly design the system according to the specific project requirements, thereby achieving the best performance and cost balance.

[0041] Preferably, the PWM pin of the Bluetooth positioning module 4 SoC chip is connected to the dimming interface of the constant current driver chip BP2956 through an RC filter circuit.

[0042] Specifically, adding an RC filter circuit in the PWM signal transmission path can effectively suppress high-frequency noise interference, improve signal quality, and avoid problems such as light source flickering caused by signal distortion. At the same time, the RC filter circuit can also play a role in smooth transition, making the light source brightness change more gentle and natural, improving user experience. In addition, this design also helps to reduce EMI (electromagnetic interference) levels and enhance the electromagnetic compatibility of the system.

[0043] Preferably, the sensing module 3 adopts plug-in terminals, including at least one of microwave radar sensing module, infrared sensing module, ultrasonic sensing module, light sensing module, and sound sensing module.

[0044] Specifically, through the cooperation of the plug-in terminal and the standard interface, the induction module 3 can realize quick replacement and maintenance, greatly facilitating on-site debugging and later upgrading, and can be configured according to the actual application scene: when high precision and long distance detection are required, a microwave radar induction module is selected, the millimeter wave signal of the microwave radar module (5.8 GHz ± 75 MHz) can penetrate non-metal materials to realize obstacle detection, and can accurately detect obstacles behind the column to realize 10-15 meter vehicle moving track tracking in the parking lot; the ultrasonic module (40 kHz ± 1 kHz) identifies the empty parking space state through 0.2-4 meter accurate ranging, with an error of ≤3 cm; the ambient light module (such as BH1750 chip) monitors the indoor channel illumination in real time, and automatically activates the navigation light strip when it is lower than 50lx; the infrared module (120° wide angle) detects the direction of human body staying within 3 meters in the shopping mall navigation scene, and the Bluetooth positioning module is linked to optimize the path guidance; the sound module responds to the "drop" sound instruction to trigger the light mode switching; and in the road section with less people and vehicles, the induction module can not be set to save energy, so as to realize the best balance between performance and economy. In some specific embodiments, multiple induction modules can be used for cooperation: when the vehicle enters the parking lot, the radar tracks the position in real time, the ultrasonic wave scans the nearest empty parking space, and the ambient light module lights up the corresponding area light strip, and the data fusion of the three makes the parking space matching efficiency improve by 40%; in indoor navigation, the infrared detects the flow density to automatically adjust the navigation brightness, the sound module identifies the emergency whistle to start evacuation lighting, and the plug-in design makes the module replacement efficiency improve by 15 times (traditional welding maintenance needs 20 minutes, and the present scheme only needs 80 seconds), and the comprehensive operation and maintenance cost is reduced by 62%.

[0045] Preferably, the induction module 3 is a microwave radar sensor, and in the present embodiment, the model is EDC15C-30N-05. Those skilled in the art can also select other models of microwave radar sensors according to specific application requirements, such as EDC18 series and EDC19 series. In the present embodiment, the working frequency of the sensor is 5.8 GHz, the trigger delay is set to 30 seconds, and human body movement detection is supported.

[0046] Specifically, the radar sensor microwave radar sensor of model EDC15C-30N-05 can accurately detect human movement in the area by emitting 5.8GHz high-frequency electromagnetic waves and receiving reflected signals. When human activity is detected, the sensor sends a high-level trigger signal to the Bluetooth positioning module 4 through the GPIO interface, triggering the Bluetooth positioning module 4 to generate light control instructions. With a working frequency as high as 5.8GHz, it has excellent penetration and anti-interference performance, and can accurately detect human movement in complex environments, avoiding false triggering or missing triggering. At the same time, the trigger delay of the sensor is set to 30 seconds, and when human movement is detected, the lamp remains on for 30 seconds; if no new activity is detected during this period, it will automatically turn off or reduce the brightness. This design effectively avoids the situation of frequently turning on and off the light due to temporary false action (such as small animals passing by), while ensuring that personnel can still obtain continuous lighting during short stays. In dark places such as underground garages where personnel activity is not frequent, the microwave radar sensor can accurately detect the movement of vehicles or personnel and trigger the lamp to switch to high brightness mode, providing sufficient illumination. When the personnel leave, the lamp automatically returns to the basic brightness or off state, significantly reducing energy consumption. Those skilled in the art can also select other models of microwave radar sensors such as the EDC18 series and the EDC19 series according to specific application requirements. These sensors also have high-frequency working frequency and strong anti-interference performance, suitable for different lighting control scenarios.

[0047] Preferably, the power module 1 includes an MB10F rectifier bridge, the AC input end of the rectifier bridge is connected with a voltage-dependent resistor connected between the live wire and the neutral wire of the mains, and the DC output end of the rectifier bridge is connected in parallel with an electrolytic capacitor connected between the output end of the rectifier bridge and the ground.

[0048] Specifically, the MB10F rectifier bridge is used to convert 220V AC power into DC power, and its high-efficiency rectification efficiency and stable output characteristics can ensure the reliable operation of the entire system. The addition of a voltage-dependent resistor at the AC input end of the rectifier bridge can absorb overvoltage in time when voltage surges are encountered, protecting the subsequent circuit from damage. The parallel connection of an electrolytic capacitor at the DC output end plays a filtering role, further reducing the ripple voltage and improving the quality of the DC power supply to ensure the normal operation of the Bluetooth positioning module 4 and the light source module 6.

[0049] Preferably, the radio frequency output pin of the SoC chip of the Bluetooth positioning module 4 is connected to the antenna through a coupling capacitor C6.

[0050] Specifically, by adding a coupling capacitor C6 between the RF output pin of the SoC chip and the antenna, the direct current signal can be effectively isolated, and only high-frequency RF signals are allowed to pass through, thereby improving the antenna transmission efficiency and reducing unnecessary energy loss. In addition, this design also helps to match the impedance, optimize the RF transmission path, ensure that the Bluetooth signal can be sent out in the best state, and enhance the communication distance and stability. This is particularly important for building a Bluetooth Mesh network with a wide range of coverage, which can significantly improve the overall system performance.

[0051] The second aspect of the present application provides an intelligent navigation lamp, which comprises a Bluetooth positioning and dimming control circuit as described in any one of the embodiments of the first aspect of the present application. The intelligent navigation lamp realizes positioning, induction triggering and dimming functions through the Bluetooth positioning and dimming control circuit.

[0052] Specifically, the intelligent navigation lamp comprises a shell, a light source module 6 and a Bluetooth positioning and dimming control circuit. The Bluetooth positioning and dimming control circuit is integrated inside the intelligent navigation lamp, as described in any one of the embodiments of the first aspect of the present application, and comprises a power supply module 1, a constant voltage module 2, an induction module 3, a Bluetooth positioning module 4 and a constant current module 5. The light source module 6 is installed in the lighting area of the shell of the intelligent navigation lamp and is driven and controlled by the constant current module 5. The shell is designed to be waterproof and dustproof, suitable for various indoor and outdoor environments. The shell is provided with a circuit installation groove inside for fixing the Bluetooth positioning and dimming control circuit. The light source module 6 supports PWM dimming and can adjust the brightness and on-off state according to the instructions of the Bluetooth positioning and dimming control circuit. The intelligent navigation lamp realizes the following functions through the Bluetooth positioning and dimming control circuit: the Bluetooth positioning module 4 transmits high-frequency signals (such as 10 Hz) through an SoC chip (such as XC6517) supporting Bluetooth protocol to realize accurate positioning. When a user carrying a mobile phone or other Bluetooth device enters the coverage range of the lamp, the lamp can determine the user's position through the Bluetooth signal and realize cross-area lighting linkage in combination with the Mesh networking function. The induction module 3 uses a microwave radar sensor (such as EDC15C-30N-05) to detect personnel activities in the area in real time. When a human body moves is detected, the induction module 3 sends a trigger signal to the Bluetooth positioning module 4 to trigger the lamp to switch to a high-brightness mode. When the personnel leave, the intelligent navigation lamp automatically returns to the basic brightness or off state. The constant current module 5 adjusts the brightness of the light source module 6 according to the PWM signal sent by the Bluetooth positioning module 4, and realizes stepless adjustment of the light source brightness through duty cycle control of the PWM signal, meeting the lighting needs in different scenarios. The present application provides a Bluetooth positioning and dimming control circuit and an intelligent navigation lamp, which solves the technical problems of insufficient power supply stability, limited signal coverage and low functional integration in existing indoor positioning systems through innovative circuit design and functional integration.

[0053] The above merely describes preferred embodiments of the present application, and does not limit the patent scope of the present application, and any equivalent structural transformation or direct / indirect application in other related technical fields under the inventive concept of the present application, and by using the content of the present application specification and drawings, are included in the patent protection scope of the present application.

Claims

1. A Bluetooth positioning dimming control circuit, characterized in that, include: The power module (1) has an input terminal connected to the mains power and an output terminal connected to the constant voltage module (2) and the constant current module (5) respectively, which are used to convert the 220V AC power of the mains power into DC power. The constant voltage module (2) is connected to the power supply module (1) at its input end and to the sensing module (3) and the Bluetooth positioning module (4) at its output end, respectively, to provide a stable DC voltage. The sensing module (3) is connected to the constant voltage module (2) and the Bluetooth positioning module (4) and is used to detect activity in the area and send a trigger signal to the Bluetooth positioning module (4); The Bluetooth positioning module (4) includes a SoC chip that supports Bluetooth and beacon functions. The power supply pin of the SoC chip is connected to the output of the constant voltage module (2), the communication pin of the SoC chip is connected to the output of the sensing module (3), and the PWM pin of the SoC chip is connected to the dimming interface of the constant current module (5) to receive external control signals and trigger signals from the sensing module (3), generate corresponding lighting control commands, and send them to the constant current module (5) through the PWM pin. as well as The constant current module (5) is connected to the power supply module (1) at its input end and to the light source at its output end. It receives the light control command through the dimming interface and is used to drive the light source and adjust the brightness or on / off state of the light source according to the light control command.

2. The Bluetooth positioning dimming control circuit of claim 1, wherein, The SoC chip uses XC6517, which integrates Bluetooth, beacon and Mesh networking functions, and is configured to generate corresponding light control commands based on the received Bluetooth control signals, Mesh network commands or trigger signals from the sensing module (3).

3. The Bluetooth positioning dimming control circuit of claim 1, wherein, The constant voltage module (2) uses a step-down constant voltage chip BP8521.

4. The Bluetooth positioning dimming control circuit of claim 3, wherein, The output of the constant voltage module (2) is also connected to a three-terminal voltage regulator (7) to provide secondary voltage regulation for the Bluetooth positioning module (4).

5. The Bluetooth positioning dimming control circuit of claim 4, wherein, The three-terminal voltage regulator (7) is HT7533.

6. The Bluetooth positioning dimming control circuit of claim 1, wherein, The constant current module (5) uses a constant current driver chip BP2956. The dimming interface of the constant current module is connected to the PWM pin of the Bluetooth positioning module (4) SoC chip, and the brightness of the light source is adjusted according to the duty cycle based on the PWM signal.

7. The Bluetooth positioning dimming control circuit of claim 6, wherein, The PWM pin of the Bluetooth positioning module (4) SoC chip is connected to the dimming interface of the constant current drive chip BP2956 through an RC filter circuit.

8. The Bluetooth positioning dimming control circuit of claim 1, wherein, The sensing module (3) is connected by plug-in terminals and includes at least one of a microwave radar sensing module, an infrared sensing module, an ultrasonic sensing module, a light sensing module, and a sound sensing module.

9. The Bluetooth positioning dimming control circuit of claim 1, wherein, The power module (1) includes an MB10F type rectifier bridge. The AC input terminal of the rectifier bridge is connected across a varistor between the mains live wire and the neutral wire. The DC output terminal of the rectifier bridge is connected in parallel with an electrolytic capacitor between the output terminal of the rectifier bridge and ground.

10. An intelligent navigation luminaire, characterized by Includes the Bluetooth positioning dimming control circuit as described in any one of claims 1 to 9.

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