Electrical appliance signal transmission circuit and lighting equipment signal transmission system

Abstract

The invention discloses an electric appliance signal transmission circuit and a lighting equipment signal transmission system, and the lighting equipment signal transmission system comprises Y pieces of lighting equipment, sensing modules which are in one-to-one correspondence with the lighting equipment, and receiving and transmitting modules which are in one-to-one correspondence with the lighting equipment, the sensing module is used for judging whether lighting equipment needs to be turned on or not and sending a turn-on signal to the transceiving module when the lighting equipment needs to be turned on; the Y receiving and transmitting modules are connected in series, the Xth receiving and transmitting module is used for outputting a turn-on signal to the lighting equipment when receiving the turn-on signal, attenuating the received turn-on signal, taking the attenuated turn-on signal as a turn-on signal of the (X + 1) th receiving and transmitting module and outputting the turn-on signal to the (X + 1) th receiving and transmitting module, both Y and X are positive integers, and X is smaller than Y. The implementation cost, including the system hardware cost and the wiring cost, is very low, and is suitable for popularization while saving energy; and hardware is self-controlled, so that most scenes can be self-adaptively coped with without general control or a bus.

Description

Technical Field

[0001] The present invention belongs to the field of circuit control, and in particular relates to an electrical appliance signal transmission circuit and a lighting equipment signal transmission system. Background Art

[0002] With the rapid development of cities, the amount of electricity used for public lighting is also increasing. The increasing number of new energy vehicles has also led to an increasing demand for nighttime electricity. In order to reduce the loss of public lighting electricity, many street lamps use induction lighting to save electricity. For example, CN114205947B discloses a method of dimming according to moving objects, which can not only meet lighting needs but also reduce energy consumption; CN102421219B discloses a method of commanding several street lamps in front to light up for a few seconds based on the corresponding values of the vehicle speed and the number of street lamps in front, as well as the corresponding values of the vehicle speed and the lighting time, while adjusting the brightness of the street lamps by monitoring the ambient brightness, traffic volume and ambient humidity to avoid ineffective lighting; CN106211512A discloses the use of wireless methods combined with induction sensing systems for wireless communication to achieve street lamp control; However, because the above-mentioned induction control method requires a communication module, when the communication module fails, the faulty street lamp will not be able to light up in time, posing certain safety risks. Summary of the Invention

[0003] The purpose of the present invention is to provide a lighting equipment signal transmission system, which relies on signal lines connected in series, and the start signal is self-controlled by hardware, and can adaptively cope with most scenarios without the need for a master control or bus.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a lighting equipment signal transmission system, which includes: Y lighting equipment, sensor modules corresponding one-to-one to the lighting equipment, and transceiver modules corresponding one-to-one to the lighting equipment, the sensor modules are used to determine whether the lighting equipment needs to be turned on and send a turn-on signal to the transceiver module when the lighting equipment needs to be turned on; the Y transceiver modules are connected in series, wherein the Xth transceiver module is used to output a turn-on signal to the lighting equipment when receiving the turn-on signal, and at the same time, the received turn-on signal is attenuated as the turn-on signal of the X+1th transceiver module and output to the X+1th transceiver module, thereby turning on the lighting equipment corresponding to the X+1th transceiver module in advance, Y and X are both positive integers, and X<Y.

[0005] In another embodiment, the sensing module includes a light intensity sensing module and several motion sensing modules. The light intensity sensing module is used to determine whether to turn on the lighting device based on the light intensity, and the motion sensing module is used to output a turn-on signal to the corresponding transceiver module when the light intensity sensing module outputs a signal indicating that the lighting device needs to be turned on and an object enters the sensing range.

[0006] In another embodiment, the system further includes a sensing signal processing module, and the motion sensing module has an output end. When no object enters the sensing range, the motion sensing signal S of the output signal is a low-level signal; when there is or is no object entering the sensing range, the motion sensing signal S is a high-level signal; when the light intensity is less than a set threshold, the light intensity signal LEN of the output signal of the light intensity sensing module is a high-level signal; when the light intensity is not less than the set threshold, the light intensity signal LEN of the output signal of the light intensity sensing module is a low-level signal; when the motion sensing signal S is a high-level signal and the light intensity signal LEN is a low-level signal, the sensing signal processing module outputs a high-level pulse width signal PWM_EN to the lighting device to start the lighting device.

[0007] In another embodiment, the sensing signal processing module includes motion sensing signal processing units corresponding one to one with the motion sensing modules, and a sensing signal judgment unit that outputs a high-level pulse width signal PWM_EN when the motion sensing signal S is a high-level signal and the light intensity signal LEN is a low-level signal.

[0008] In another embodiment, the motion sensing signal processing units are respectively a first motion sensing signal processing unit, a second motion sensing signal processing unit, ..., an Nth motion sensing signal processing unit with identical structures. The first motion sensing signal processing unit includes a first resistor R1 having one end connected to the output end of the motion sensing module, a first NMOS transistor Q1 having a gate connected to the other end of the first resistor R1 and a drain connected to the sensing signal judgment unit, a second resistor R2 having one end connected to the output end of the motion sensing module and the other end grounded. The source of the first NMOS transistor Q1 is grounded.

[0009] In another embodiment, the system includes a PWM square wave generating module, the PWM square wave generating module including a chip having a first pin GND, a second pin TRIG, a third pin OUT, a fourth pin RESET, a fifth pin CONT, a sixth pin THRES, a seventh pin DISCH, and an eighth pin VCC, a first capacitor C1 connected between the first pin GND and the fourth pin RESET, a third resistor R3, a seventh resistor R7, and a third capacitor C3 connected in sequence between the eighth pin VCC and the ground, a second capacitor C2 connected between the fifth pin and the ground, and a power supply connected to the eighth pin. VCC and the first capacitor C1, the seventh pin DISCH is connected between the third resistor R3 and the seventh resistor R7 of the loom, the sixth pin THRES and the second pin are connected between the seventh resistor R7 and the third capacitor C3, and the third pin OUT is the output end of the PWM square wave generation module; the PWM square wave generation module outputs a square wave with a fixed period and pulse width, and the transceiver module causes the pulse width signal generated by the PWM square wave to attenuate according to the set amplitude, and when receiving the start signal, outputs the start signal to the lighting device, and at the same time attenuates the received start signal as the start signal of the next transceiver module and outputs it to the next transceiver module.

[0010] In another embodiment, the sensing signal judgment unit includes a sixth resistor R6 having one end connected to the output end of each motion sensing signal processing unit, a second NMOS transistor Q2 having a gate connected to the other end of the sixth resistor R6 and a source grounded, a fifth resistor R5 having one end connected to the power supply and the other end connected to the output end of the motion sensing module, a fourth resistor R4 having one end connected to the power supply and the other end connected to the drain of the second NMOS transistor, a fourth capacitor C4 having one end grounded and the other end connected to the gate of the second NMOS transistor Q2, a twelfth resistor R12, a fifth NMOS transistor Q5, an eleventh resistor R11, and a fourth NMOS transistor Q4 connected in sequence between the output end of the light intensity sensing module and the drain of the second NMOS transistor Q2, and a thirteenth resistor R1 connected to the output end of the light intensity sensing module and grounded. 3. A tenth resistor R10 connected to the drain of the fifth NMOS transistor Q5 and to a power supply; a nineteenth resistor R19 having one end connected to the drain of the fourth NMOS transistor Q4; and a sixth NMOS transistor Q6 having a gate connected to the other end of the nineteenth resistor R19. The source of the sixth NMOS transistor Q6 is grounded, and the drain serves as an output end of the light intensity signal LEN. The drain of the second NMOS transistor Q2 serves as an output end of the motion signal SEN for the sensing signal processing module, and the source of the second NMOS transistor Q2 is grounded. The gate of the fifth NMOS transistor Q5 is connected to the twelfth resistor R12, and the source of the fifth NMOS transistor Q5 is grounded. An eleventh resistor R11 is connected between the drain of the fifth NMOS transistor Q5 and the gate of the fourth NMOS transistor Q4, and the source of the fourth NMOS transistor Q4 is grounded.

[0011] In another embodiment, the transceiver module includes a reverse attenuation unit, each of the reverse attenuation units includes a reverse input terminal BIN, a reverse output terminal FOUT, an eighteenth resistor R18, an eighth NMOS transistor Q8, a sixteenth resistor R16, and a seventh NMOS transistor Q7 connected in sequence between the reverse input terminal BIN and the reverse output terminal FOUT, a first variable resistor RF, a fifth capacitor C5, and a fourteenth resistor R14, the source of the eighth NMOS transistor Q8 is grounded, the gate is connected to the eighteenth resistor R18, and the drain is connected to the first variable resistor RF, the source of the seventh NMOS transistor Q7 is grounded, the gate is connected to the sixteenth resistor R16, and the drain is connected to the fourteenth resistor R14, one end of the fifth capacitor C5 is connected between the sixteenth resistor R16 and the gate of the seventh NMOS transistor Q7, and the other end thereof is grounded; the reverse input terminal Both BIN and the reverse output terminal FOUT are at a high level in static state. When the reverse input terminal BIN is about to reach a low level, the first NMOS transistor Q8 is turned off, the first capacitor C5 begins to charge to the gate voltage of Q7, and the second NMOS transistor Q7 is turned on. Subsequently, the reverse output terminal FOUT is about to reach a low level. The reverse input terminal BIN rises to a high level after a period of time. The first NMOS transistor Q8 is turned on and discharges the charge of the first capacitor C5 through the second resistor R16. The second NMOS transistor Q7 is then turned off, and the reverse output terminal FOUT is then increased to a high level. The low-level pulse width signal PWM passes through the reverse input terminal BIN and the reverse output terminal FOUT. The pulse width time of the pulse width signal PWM is shortened. The decay time can be adjusted by adjusting the first variable resistor RF, the sixteenth resistor R16, the fifth capacitor C5, and the gate turn-on voltage of the seventh NMOS transistor Q7.

[0012] In another embodiment, the transceiver module includes a forward attenuation unit, each of the forward attenuation units includes a forward input terminal FIN, a forward output terminal BOUT, a thirty-ninth resistor R39, a twenty-second NMOS transistor Q22, a thirty-eighth resistor R38, and a twenty-first NMOS transistor Q21, a second variable resistor RB, an eighth capacitor C8, and a twenty-fifth resistor R25, which are sequentially connected between the forward input terminal FIN and the forward output terminal BOUT. The source of the twenty-second NMOS transistor Q22 is grounded, the gate is connected to the thirty-ninth resistor R39, and the drain is connected to the second variable resistor RB. The source of the twenty-first NMOS transistor Q21 is grounded, the gate is connected to the thirty-eighth resistor R38, and the drain is connected to the twenty-fifth resistor R25. One end of the eighth capacitor C8 is connected between the thirty-eighth resistor R38 and the gate of the twenty-first NMOS transistor Q21, and the other end thereof is grounded. The forward output terminal BOUT is at a high level in a static state. When the positive input terminal FIN is about to reach a low level, the twenty-second NMOS transistor Q22 is turned off, and the eighth capacitor C8 begins to charge to the gate voltage of the twenty-first NMOS transistor Q21. The twenty-first NMOS transistor Q21 is then turned on. Subsequently, the forward output terminal BOUT is about to reach a low level. The positive input terminal FIN rises to a high level after a period of time. The twenty-second NMOS transistor Q22 is turned on and discharges the charge of the eighth capacitor C8 through the thirty-eighth resistor R38. The twenty-first NMOS transistor Q21 is then turned off, and the forward output terminal BOUT is then increased to a high level. The low-level pulse width signal PWM passes through the positive input terminal FIN and the positive output terminal BOUT. The pulse width time of the pulse width signal PWM is shortened. The decay time can be adjusted by adjusting the second variable resistor RB, the thirty-eighth resistor R38, the eighth capacitor C8, and the gate turn-on voltage of the twenty-first NMOS transistor Q21.

[0013] In another embodiment, the system further includes a driver module corresponding to each lighting device, the driver module being configured to receive a start signal sent after attenuation processing by a previous transceiver module and output it to the corresponding lighting device to turn on the lighting device in advance, while also causing the corresponding lighting device to be turned off with a delayed shutdown. The driver module includes a nineteenth resistor R19, a sixth NMOS transistor Q6, a twentieth resistor R20, and a ninth NMOS transistor Q9 connected in sequence between the output end of the sensing signal processing module and the input end of the lighting device; a fifteenth resistor R15 connected between the drain of the sixth NMOS transistor Q6 and the power supply; and a second resistor R21 connected between the power supply and the drain of the ninth NMOS transistor Q9. A seventeenth resistor R17 has one end connected to the ground and the other end connected to a sixth capacitor C6 between the twentieth resistor R20 and the gate of the ninth NMOS transistor Q9; the driving module further includes a twenty-fourth resistor R24, a twelfth NMOS transistor Q12, a twenty-third resistor R23, an eleventh NMOS transistor Q11, and a twenty-second resistor R22 connected between the power supply and the drain of the twelfth NMOS transistor Q12, which are sequentially connected between the inverting input terminal BIN and the drain of the sixth NMOS transistor Q6; or the driving module further includes a thirtieth resistor R30, a sixteenth NMOS transistor Q11, and a second resistor R32 connected between the positive input terminal FIN and the drain of the sixth NMOS transistor Q6, which are sequentially connected between the positive input terminal FIN and the drain of the sixth NMOS transistor Q6. 16. A twenty-ninth resistor R29, a fifteenth NMOS transistor Q15, a twenty-eighth resistor R28 connected between the power supply and the drain of the sixteenth NMOS transistor Q16, the source of the twelfth NMOS transistor Q12 being grounded, the gate being connected to the twenty-fourth resistor R24, and the drain being connected to the twenty-third resistor R23, the source of the eleventh NMOS transistor Q11 being grounded, and the gate being connected to the twenty-third resistor R23; the source of the sixteenth NMOS transistor Q16 being grounded, the gate being connected to the thirtieth resistor R30, and the drain being connected to the twenty-ninth resistor R29, the source of the fifteenth NMOS transistor Q15 being grounded, and the gate being connected to the twenty-ninth resistor R29. On R29; when the light intensity signal LEN of the light intensity sensing module output signal is a high level signal, the ninth NMOS tube Q9 is turned on and the output signal Light is a low level; when the light intensity signal LEN of the light intensity sensing module output signal is a low level signal, the ninth NMOS tube Q9 is quickly turned off, and the signal Light is output at a high level; when the light intensity signal LEN is about to be low again, the sixth capacitor C6 is charged to the gate voltage of the ninth NMOS tube Q9 (the time here can be set to about 13s, the purpose is to convert the received short-time valid signal into a delayed signal for convenient lighting), the ninth NMOS tube Q9 is turned on, and the signal Light is a low level.

[0014] In another embodiment, the reverse attenuation unit includes a twenty-first resistor R21 and a tenth NMOS transistor Q10, which are sequentially connected between the output terminal of the sensing signal processing module and the drain of the eighth NMOS transistor Q8. The drain of the tenth NMOS transistor Q10 is connected to the drain of the eighth NMOS transistor Q8, and the source of the tenth NMOS transistor Q10 is grounded. The twenty-first resistor R21 is connected between the gate of the tenth NMOS transistor Q10 and the output terminal of the sensing signal processing module. When the reverse attenuation unit receives a high-level pulse width signal PWM_EN output by the corresponding sensing signal processing module while performing attenuation signal transmission, the high-level pulse width signal PWM_EN turns on the lighting device currently corresponding to the reverse attenuation unit. The high-level pulse width signal PWM_EN is then attenuated and sent to the inverting input terminal BIN of the next transceiver module. The number of lights turned on is adjusted by setting the amplitude attenuation to achieve quantitative turn-on.

[0015] In another embodiment, the forward attenuation unit includes a 40th resistor R40 and a 23rd NMOS transistor Q23 sequentially connected between the output terminal of the sensing signal processing module and the drain of the 22nd NMOS transistor Q22. The drain of the 23rd NMOS transistor Q23 is connected to the drain of the 22nd NMOS transistor Q22, and the source of the 23rd NMOS transistor Q23 is grounded. The 40th resistor R40 is connected between the gate of the 23rd NMOS transistor Q23 and the output terminal of the sensing signal processing module. When the forward attenuation unit receives a high-level pulse width signal PWM_EN output by the corresponding sensing signal processing module while performing attenuation signal transmission, the high-level pulse width signal PWM_EN turns on the lighting device currently corresponding to the reverse attenuation unit, and then attenuates the high-level pulse width signal PWM_EN and sends it to the positive input terminal FIN of the next transceiver module. The number of turns on is adjusted by setting the amplitude attenuation to achieve quantitative turn-on.

[0016] In another embodiment, the system further includes a PWM square wave generating module, and the transceiver module further includes a thirteenth NMOS transistor Q13 and a fourteenth NMOS transistor Q14 connected sequentially between the drain of the seventh NMOS transistor Q7 and the drain of the twenty-first NMOS transistor Q21, a twenty-fifth resistor R25 connected between the power supply and the gate of the fourteenth NMOS transistor Q14, a thirty-seventh resistor R37, a twentieth NMOS transistor Q20, and a thirty-sixth resistor R37 connected sequentially between the output end of the sensing signal processing module and the gate of the fourteenth NMOS transistor Q14. 36, the nineteenth NMOS transistor Q19, the thirty-fourth resistor R34, the eighteenth NMOS transistor Q18, the thirty-second resistor R32, the seventeenth NMOS transistor Q17, the twenty-sixth resistor R26, the thirty-fifth resistor R35 connected between the power supply and the drain of the twentieth NMOS transistor Q20, the thirty-third resistor R33 connected between the power supply and the drain of the nineteenth NMOS transistor Q19, the thirty-first resistor R31 connected between the power supply and the drain of the eighteenth NMOS transistor Q18, one end of which is grounded and the other end of which is connected to the drain of the nineteenth NMOS transistor Q19. A seventh capacitor C7 is connected between the drain of the seventeenth NMOS transistor Q17 and the thirty-fourth resistor R34, a twenty-seventh resistor R27 is connected between the drain of the seventeenth NMOS transistor Q17 and the output end of the PWM square wave generating module, the source of the thirteenth NMOS transistor Q13 is grounded, the drain is connected to the drain of the seventh NMOS transistor Q7, and the gate is connected to the gate of the fourteenth NMOS transistor Q14, the source of the fourteenth NMOS transistor Q14 is grounded, the drain is connected to the drain of the twenty-first NMOS transistor Q21, and the gate is connected to the gate of the thirteenth NMOS transistor Q13, the twentieth NMOS transistor Q The source of the NMOS transistor Q20 is grounded, the gate is connected to the thirty-seventh resistor R37, and the drain is connected to the thirty-fifth resistor R35. The source of the nineteenth NMOS transistor Q19 is grounded, the gate is connected to the thirty-sixth resistor R36, and the drain is connected to the thirty-third resistor R33. The source of the eighteenth NMOS transistor Q18 is grounded, the gate is connected to the thirty-fourth resistor R34, and the drain is connected to the thirty-first resistor R31. The source of the seventeenth NMOS transistor Q17 is grounded, the gate is connected to the thirty-second resistor R32, and the drain is connected between the twenty-sixth resistor R26 and the twenty-seventh resistor R27.

[0017] The present invention also provides an electrical appliance signal transmission circuit, which includes: Y transceiver modules connected in series, wherein the Xth transceiver module is used to output a start signal to the electrical appliance when receiving a start signal, and at the same time attenuate the received start signal as the start signal of the X+1th transceiver module and output it to the X+1th transceiver module, Y and X are both positive integers, and X<Y.

[0018] In another embodiment, the transceiver module includes a reverse attenuation unit, each of the reverse attenuation units includes a reverse input terminal BIN, a reverse output terminal FOUT, an eighteenth resistor R18, an eighth NMOS transistor Q8, a sixteenth resistor R16, and a seventh NMOS transistor Q7 connected in sequence between the reverse input terminal BIN and the reverse output terminal FOUT, a first variable resistor RF, a fifth capacitor C5, and a fourteenth resistor R14, the source of the eighth NMOS transistor Q8 is grounded, the gate is connected to the eighteenth resistor R18, and the drain is connected to the first variable resistor RF, the source of the seventh NMOS transistor Q7 is grounded, the gate is connected to the sixteenth resistor R16, and the drain is connected to the fourteenth resistor R14, one end of the fifth capacitor C5 is connected between the sixteenth resistor R16 and the gate of the seventh NMOS transistor Q7, and the other end thereof is grounded; the reverse input terminal Both BIN and the reverse output terminal FOUT are at a high level in static state. When the reverse input terminal BIN is about to reach a low level, the first NMOS transistor Q8 is turned off, the first capacitor C5 begins to charge to the gate voltage of Q7, and the second NMOS transistor Q7 is turned on. Subsequently, the reverse output terminal FOUT is about to reach a low level. The reverse input terminal BIN rises to a high level after a period of time. The first NMOS transistor Q8 is turned on and discharges the charge of the first capacitor C5 through the second resistor R16. The second NMOS transistor Q7 is then turned off, and the reverse output terminal FOUT is then increased to a high level. The low-level pulse width signal PWM passes through the reverse input terminal BIN and the reverse output terminal FOUT. The pulse width time of the pulse width signal PWM is shortened. The decay time can be adjusted by adjusting the first variable resistor RF, the sixteenth resistor R16, the fifth capacitor C5, and the gate turn-on voltage of the seventh NMOS transistor Q7.

[0019] In another embodiment, the transceiver module includes a forward attenuation unit, each of the forward attenuation units includes a forward input terminal FIN, a forward output terminal BOUT, a thirty-ninth resistor R39, a twenty-second NMOS transistor Q22, a thirty-eighth resistor R38, and a twenty-first NMOS transistor Q21, a second variable resistor RB, an eighth capacitor C8, and a twenty-fifth resistor R25, which are sequentially connected between the forward input terminal FIN and the forward output terminal BOUT. The source of the twenty-second NMOS transistor Q22 is grounded, the gate is connected to the thirty-ninth resistor R39, and the drain is connected to the second variable resistor RB. The source of the twenty-first NMOS transistor Q21 is grounded, the gate is connected to the thirty-eighth resistor R38, and the drain is connected to the twenty-fifth resistor R25. One end of the eighth capacitor C8 is connected between the thirty-eighth resistor R38 and the gate of the twenty-first NMOS transistor Q21, and the other end thereof is grounded. The forward output terminal BOUT is at a high level in a static state. When the positive input terminal FIN is about to reach a low level, the twenty-second NMOS transistor Q22 is turned off, and the eighth capacitor C8 begins to charge to the gate voltage of the twenty-first NMOS transistor Q21. The twenty-first NMOS transistor Q21 is then turned on. Subsequently, the forward output terminal BOUT is about to reach a low level. The positive input terminal FIN rises to a high level after a period of time. The twenty-second NMOS transistor Q22 is turned on and discharges the charge of the eighth capacitor C8 through the thirty-eighth resistor R38. The twenty-first NMOS transistor Q21 is then turned off, and the forward output terminal BOUT is then increased to a high level. The low-level pulse width signal PWM passes through the positive input terminal FIN and the positive output terminal BOUT. The pulse width time of the pulse width signal PWM is shortened. The decay time can be adjusted by adjusting the second variable resistor RB, the thirty-eighth resistor R38, the eighth capacitor C8, and the gate turn-on voltage of the twenty-first NMOS transistor Q21.

[0020] Due to the application of the above technical solutions, the present invention has the following advantages compared with the prior art: 1. The cost of this system is very low, including the system hardware cost and wiring cost (two signal lines are connected in series with the street lamp), which is energy-saving and suitable for promotion; 2. The hardware is self-controlled and can adaptively respond to most scenarios without the need for a master control or bus; 3. Compared with the street lamp system with timed control, it can meet the lighting needs while also saving energy by reducing the time of invalid lighting; at the same time, it can respond in time in bad weather during the day (severe cloudy days cause the environment to darken); 4. Compared with street lamps that are only lit by light intensity sensing and motion sensing, it can light up the street lamps in advance to meet the lighting needs of more roads (especially expressways); 5. Compared with wireless signal transmission, it has higher signal transmission stability; 6. Each system will "relay" the signal, and there is no signal attenuation for long-distance control; 7. By setting the resistance value in the square wave signal attenuation unit respectively, the number of street lamps that are lit in the front and back extensions can be set respectively. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a functional block diagram of the system in Example 1;

[0022] Figure 2 is a circuit diagram of the system in Example 1;

[0023] Figure 3 This is a circuit diagram of the sensing module and the sensing signal processing module in Example 1;

[0024] Figure 4 is a circuit diagram of the driving module in Example 1;

[0025] Figure 5 This is a circuit diagram of the PWM square wave generating unit in Example 1;

[0026] Figure 6 This is a circuit diagram of the square wave signal attenuation unit in Example 1;

[0027] Figure 7 This is a block diagram of the system in Example 3.

[0028] Figure 8 This is a circuit diagram of the system in Example 3;

[0029] Figure 9 This is a circuit diagram of the sensing module and the sensing signal processing module in Example 3;

[0030] Figure 10 This is a circuit diagram of the driving module in Example 3;

[0031] Figure 11 This is a circuit diagram of the transceiver module in Example 3. DETAILED DESCRIPTION

[0032] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings.

[0033] Example 1

[0034] like Figure 1-6 As shown, a lighting device signal transmission system includes: Y lighting devices, sensor modules corresponding to the lighting devices one-to-one, induction signal processing modules, PWM square wave generation modules, transceiver modules corresponding to the lighting devices one-to-one, and drive modules corresponding to the lighting devices one-to-one, the sensor modules are used to determine whether the lighting devices need to be turned on and send a turn-on signal to the transceiver modules when the lighting devices need to be turned on; Y transceiver modules are connected in series, wherein the Xth transceiver module is used to output a turn-on signal to the lighting device upon receiving the turn-on signal, and at the same time, attenuate the received turn-on signal as a turn-on signal of the X+1th transceiver module and output it to the X+1th transceiver module, Y and X are both positive integers, and X<Y.

[0035] Specifically, the sensing module includes a light intensity sensing module and several motion sensing modules. The light intensity sensing module is used to determine whether to turn on the lighting equipment based on the light intensity. The motion sensing module is used to output a turn-on signal to the corresponding transceiver module when the light intensity sensing module outputs a signal to turn on the lighting equipment and an object enters the sensing range.

[0036] The motion sensing module has an output end. When no object enters the sensing range, the motion sensing signal S of its output signal is a low-level signal. When there is or is no object entering the sensing range, the motion sensing signal S is a high-level signal. When the light intensity is less than the set threshold, the light intensity signal LEN of the light intensity sensing module output signal is a high-level signal. When the light intensity is not less than the set threshold, the light intensity signal LEN of the light intensity sensing module output signal is a low-level signal. When the motion sensing signal S is a high-level signal and the light intensity signal LEN is a low-level signal, the sensing signal processing module outputs a high-level pulse width signal PWM_EN to the lighting device to start the lighting device.

[0037] The sensing signal processing module includes motion sensing signal processing units corresponding to the motion sensing modules respectively, and a sensing signal judgment unit that outputs a high-level pulse width signal PWM_EN when the motion sensing signal S is a high-level signal and the light intensity signal LEN is a low-level signal.

[0038] The motion sensing signal processing units are respectively a first motion sensing signal processing unit, a second motion sensing signal processing unit, ..., an Nth motion sensing signal processing unit having the same structure. The first motion sensing signal processing unit includes a first resistor R1 having one end connected to the output end of the motion sensing module, a first NMOS transistor Q1 having a gate connected to the other end of the first resistor R1 and a drain connected to the sensing signal judgment unit, and a second resistor R2 having one end connected to the output end of the motion sensing module and the other end grounded. The source of the first NMOS transistor Q1 is grounded.

[0039] Light intensity sensing module: used to detect ambient light intensity. When the light intensity is greater than the set threshold, the module's interface output signal LEN is low. When the light intensity is less than the set threshold, the module's interface output signal LEN is high; Motion sensing module: used to detect the movement of vehicles, people, and other objects. If no moving objects or people are sensed, the module's interface output signal S1 is low. If a moving object or person is sensed, the module's interface output signal S1 is high; Motion sensing module N: The function is the same as that of motion sensing module 1. Based on the maturity of motion sensing module products, this design can achieve a higher monitoring success rate by increasing the number of motion sensing modules. The number of motion sensing modules N can be 0, 1, or more, and the corresponding signal SN can be 0, 1, or more.

[0040] The PWM square wave generation module includes a chip having a first pin GND, a second pin TRIG, a third pin OUT, a fourth pin RESET, a fifth pin CONT, a sixth pin THRES, a seventh pin DISCH, and an eighth pin VCC; a first capacitor C1 connected between the first pin GND and the fourth pin RESET; a third resistor R3, a seventh resistor R7, and a third capacitor C3 connected in sequence between the eighth pin VCC and ground; a second capacitor C2 connected between the fifth pin and ground; a power supply connected to the eighth pin VCC and the first capacitor C1; a seventh pin DISCH connected between the third resistor R3 and the seventh resistor R7 of the loom; the sixth pin THRES and the second pin connected between the seventh resistor R7 and the third capacitor C3; and the third pin OUT being the output terminal of the PWM square wave generation module. The PWM square wave generation module outputs a square wave with a fixed period and pulse width. The transceiver module attenuates the pulse width signal generated by the PWM square wave according to a set amplitude. Upon receiving a start signal, the transceiver module outputs the start signal to the lighting device and attenuates the received start signal as the start signal for the next transceiver module and outputs it to the next transceiver module.

[0041] The sensing signal judgment unit includes a sixth resistor R6 having one end connected to the output end of each motion sensing signal processing unit, a second NMOS transistor Q2 having a gate connected to the other end of the sixth resistor R6 and a source grounded, a fifth resistor R5 having one end connected to the power supply and the other end connected to the output end of the motion sensing module, a fourth resistor R4 having one end connected to the power supply and the other end connected to the drain of the second NMOS transistor, a fourth capacitor C4 having one end grounded and the other end connected to the gate of the second NMOS transistor Q2, a twelfth resistor R12, a fifth NMOS transistor Q5, an eleventh resistor R11, and a fourth NMOS transistor Q4 connected in sequence between the output end of the light intensity sensing module and the drain of the second NMOS transistor Q2, and a thirteenth resistor R1 connected to the output end of the light intensity sensing module and grounded. 13. A tenth resistor R10 connected to the drain of the fifth NMOS transistor Q5 and to a power supply; a nineteenth resistor R19 having one end connected to the drain of the fourth NMOS transistor Q4; a sixth NMOS transistor Q6 having its gate connected to the other end of the nineteenth resistor R19; the source of the sixth NMOS transistor Q6 being grounded, and the drain serving as an output end for the light intensity signal LEN; the drain of the second NMOS transistor Q2 serving as an output end for the motion signal SEN of the sensing signal processing module; the source of the second NMOS transistor Q2 being grounded; the gate of the fifth NMOS transistor Q5 being connected to the twelfth resistor R12; the source of the fifth NMOS transistor Q5 being grounded; an eleventh resistor R11 being connected between the drain of the fifth NMOS transistor Q5 and the gate of the fourth NMOS transistor Q4; the source of the fourth NMOS transistor Q4 being grounded.

[0042] The transceiver module includes a reverse attenuation unit, each reverse attenuation unit includes a reverse input terminal BIN, a reverse output terminal FOUT, an eighteenth resistor R18, an eighth NMOS transistor Q8, a sixteenth resistor R16, and a seventh NMOS transistor Q7 connected in sequence between the reverse input terminal BIN and the reverse output terminal FOUT, a first variable resistor RF, a fifth capacitor C5, and a fourteenth resistor R14, the source of the eighth NMOS transistor Q8 is grounded, the gate is connected to the eighteenth resistor R18, and the drain is connected to the first variable resistor RF, the source of the seventh NMOS transistor Q7 is grounded, the gate is connected to the sixteenth resistor R16, and the drain is connected to the fourteenth resistor R14, one end of the fifth capacitor C5 is connected between the sixteenth resistor R16 and the gate of the seventh NMOS transistor Q7, and the other end thereof is grounded; the reverse input terminal BIN and the reverse output terminal FOUT are connected in sequence. The terminal FOUT is at a high level in static state. When the reverse input terminal BIN is about to reach a low level, the first NMOS transistor Q8 is turned off, the first capacitor C5 starts to charge to the gate voltage of Q7, and the second NMOS transistor Q7 is turned on. Subsequently, the reverse output terminal FOUT is about to reach a low level. The reverse input terminal BIN rises to a high level after a period of time. The first NMOS transistor Q8 is turned on and discharges the charge of the first capacitor C5 through the second resistor R16. The second NMOS transistor Q7 is then turned off, and the reverse output terminal FOUT is then increased to a high level. The low-level pulse width signal PWM passes through the reverse input terminal BIN and the reverse output terminal FOUT, and the pulse width time of the pulse width signal PWM is shortened. The decay time can be adjusted by adjusting the first variable resistor RF, the sixteenth resistor R16, the fifth capacitor C5, and the gate turn-on voltage of the seventh NMOS transistor Q7.

[0043] The transceiver module includes a forward attenuation unit, each of which includes a forward input terminal FIN, a forward output terminal BOUT, a thirty-ninth resistor R39, a twenty-second NMOS transistor Q22, a thirty-eighth resistor R38, and a twenty-first NMOS transistor Q21, a second variable resistor RB, an eighth capacitor C8, and a twenty-fifth resistor R25, which are sequentially connected between the forward input terminal FIN and the forward output terminal BOUT. The source of the twenty-second NMOS transistor Q22 is grounded, the gate is connected to the thirty-ninth resistor R39, and the drain is connected to the second variable resistor RB. The source of the twenty-first NMOS transistor Q21 is grounded, the gate is connected to the thirty-eighth resistor R38, and the drain is connected to the twenty-fifth resistor R25. One end of the eighth capacitor C8 is connected between the thirty-eighth resistor R38 and the gate of the twenty-first NMOS transistor Q21, and the other end is grounded. T is at a high level in static state. When the positive input terminal FIN is about to reach a low level, the twenty-second NMOS transistor Q22 is turned off, and the eighth capacitor C8 begins to charge to the gate voltage of the twenty-first NMOS transistor Q21. The twenty-first NMOS transistor Q21 is then turned on. Subsequently, the positive output terminal BOUT is about to reach a low level. The positive input terminal FIN rises to a high level after a period of time. The twenty-second NMOS transistor Q22 is turned on and discharges the charge of the eighth capacitor C8 through the thirty-eighth resistor R38. The twenty-first NMOS transistor Q21 is then turned off, and the positive output terminal BOUT is then increased to a high level. The low-level pulse width signal PWM passes through the positive input terminal FIN and the positive output terminal BOUT. The pulse width time of the pulse width signal PWM is shortened. The decay time can be adjusted by adjusting the second variable resistor RB, the thirty-eighth resistor R38, the eighth capacitor C8, and the gate turn-on voltage of the twenty-first NMOS transistor Q21.

[0044] The driving module is used to receive the start signal sent by the previous transceiver module after attenuation processing and output it to the corresponding lighting device, while delaying the shutdown of the corresponding lighting device. The driving module includes a nineteenth resistor R19, a sixth NMOS transistor Q6, a twentieth resistor R20, and a ninth NMOS transistor Q9 connected in sequence between the output end of the sensing signal processing module and the input end of the lighting device, a fifteenth resistor R15 connected between the drain of the sixth NMOS transistor Q6 and the power supply, a seventeenth resistor R17 connected between the power supply and the drain of the ninth NMOS transistor Q9, one end of which is grounded and the other end is connected to the twentieth resistor R20 and The sixth capacitor C6 between the gate of the ninth NMOS transistor Q9; the driving module further includes a twenty-fourth resistor R24, a twelfth NMOS transistor Q12, a twenty-third resistor R23, and an eleventh NMOS transistor Q11 connected in sequence between the reverse input terminal BIN and the drain of the sixth NMOS transistor Q6, and a twenty-second resistor R22 connected between the power supply and the drain of the twelfth NMOS transistor Q12; or the driving module further includes a thirtieth resistor R30, a sixteenth NMOS transistor Q16, a twenty-ninth resistor R29, and a fifteenth NMOS transistor Q11 connected in sequence between the positive input terminal FIN and the drain of the sixth NMOS transistor Q6. The OS transistor Q15 is connected to the twenty-eighth resistor R28 between the power supply and the drain of the sixteenth NMOS transistor Q16. The source of the twelfth NMOS transistor Q12 is grounded, the gate is connected to the twenty-fourth resistor R24, and the drain is connected to the twenty-third resistor R23. The source of the eleventh NMOS transistor Q11 is grounded, and the gate is connected to the twenty-third resistor R23. The source of the sixteenth NMOS transistor Q16 is grounded, the gate is connected to the thirtieth resistor R30, and the drain is connected to the twenty-ninth resistor R29. The source of the fifteenth NMOS transistor Q15 is grounded, and the gate is connected to the twenty-ninth resistor R29. When the light intensity sensing mode is on, the power supply is turned on and the gate is turned off. When the light intensity signal LEN of the block output signal is a high level signal, the ninth NMOS tube Q9 is turned on and the output signal Light is a low level. When the light intensity signal LEN of the light intensity sensing module output signal is a low level signal, the ninth NMOS tube Q9 is quickly turned off, and the signal Light is output at a high level. When the light intensity signal LEN is about to be low again, the sixth capacitor C6 is charged to the gate voltage of the ninth NMOS tube Q9 (the time here can be set to about 13s, the purpose is to convert the received short-time valid signal into a delayed signal for convenient lighting), the ninth NMOS tube Q9 is turned on, and the signal Light is a low level.

[0045] The reverse attenuation unit includes a twenty-first resistor R21 and a tenth NMOS transistor Q10, which are sequentially connected between the output terminal of the sensing signal processing module and the drain of the eighth NMOS transistor Q8. The drain of the tenth NMOS transistor Q10 is connected to the drain of the eighth NMOS transistor Q8, and the source of the tenth NMOS transistor Q10 is grounded. The twenty-first resistor R21 is connected between the gate of the tenth NMOS transistor Q10 and the output terminal of the sensing signal processing module. When the reverse attenuation unit receives a high-level pulse width signal PWM_EN output by the corresponding sensing signal processing module while performing attenuation signal transmission, the high-level pulse width signal PWM_EN turns on the lighting device currently corresponding to the reverse attenuation unit, and attenuates the high-level pulse width signal PWM_EN before sending it to the inverting input terminal BIN of the next transceiver module.

[0046] The forward attenuation unit includes a 40th resistor R40 and a 23rd NMOS transistor Q23 connected sequentially between the output terminal of the sensing signal processing module and the drain of the 22nd NMOS transistor Q22. The drain of the 23rd NMOS transistor Q23 is connected to the drain of the 22nd NMOS transistor Q22, and the source of the 23rd NMOS transistor Q23 is grounded. The 40th resistor R40 is connected between the gate of the 23rd NMOS transistor Q23 and the output terminal of the sensing signal processing module. When the forward attenuation unit receives a high-level pulse width signal PWM_EN output by the corresponding sensing signal processing module while performing attenuation signal transmission, the high-level pulse width signal PWM_EN turns on the lighting device currently corresponding to the reverse attenuation unit, and attenuates the high-level pulse width signal PWM_EN before sending it to the positive input terminal FIN of the next transceiver module.

[0047] The transceiver module further includes a thirteenth NMOS transistor Q13 and a fourteenth NMOS transistor Q14 connected in sequence between the drain of the seventh NMOS transistor Q7 and the drain of the twenty-first NMOS transistor Q21, a twenty-fifth resistor R25 connected between the power supply and the gate of the fourteenth NMOS transistor Q14, a thirty-seventh resistor R37, a twentieth NMOS transistor Q20, a thirty-sixth resistor R36, a nineteenth NMOS transistor Q19, a thirty-fourth resistor R37 connected in sequence between the output end of the sensing signal processing module and the gate of the fourteenth NMOS transistor Q14, and a twentieth NMOS transistor Q20, a thirty-sixth resistor R36, a nineteenth NMOS transistor Q19, and a thirty-fourth resistor R37 connected in sequence between the output end of the sensing signal processing module and the gate of the fourteenth NMOS transistor Q14. The 31st resistor R31 is connected between the power supply and the drain of the 18th NMOS transistor Q18, with one end grounded and the other end connected between the drain of the 19th NMOS transistor Q19 and the 34th resistor R34. A seventh capacitor C7 is connected between the drain of the seventeenth NMOS transistor Q17 and the output end of the PWM square wave generating module; a twenty-seventh resistor R27 is connected between the drain of the seventeenth NMOS transistor Q17 and the output end of the PWM square wave generating module; the source of the thirteenth NMOS transistor Q13 is grounded, the drain is connected to the drain of the seventh NMOS transistor Q7, and the gate is connected to the gate of the fourteenth NMOS transistor Q14; the source of the fourteenth NMOS transistor Q14 is grounded, the drain is connected to the drain of the twenty-first NMOS transistor Q21, and the gate is connected to the gate of the thirteenth NMOS transistor Q13; the source of the twentieth NMOS transistor Q20 is grounded, the drain is connected to the drain of the twenty-first NMOS transistor Q21, and the gate is connected to the gate of the thirteenth NMOS transistor Q13 The gate is connected to the thirty-seventh resistor R37, and the drain is connected to the thirty-fifth resistor R35. The source of the nineteenth NMOS transistor Q19 is grounded, the gate is connected to the thirty-sixth resistor R36, and the drain is connected to the thirty-third resistor R33. The source of the eighteenth NMOS transistor Q18 is grounded, the gate is connected to the thirty-fourth resistor R34, and the drain is connected to the thirty-first resistor R31. The source of the seventeenth NMOS transistor Q17 is grounded, the gate is connected to the thirty-second resistor R32, and the drain is connected between the twenty-sixth resistor R26 and the twenty-seventh resistor R27.

[0048] The transceiver module (with pulse width attenuation) has signal FIN (underlined signals in the circuit diagram indicate active low) representing the signal received from the streetlight ahead. Signal FOUT represents the signal sent to the streetlight ahead. Signal BIN represents the signal received from the streetlight behind, and signal BOUT represents the signal sent to the streetlight behind. Signal FIN of this streetlight is connected to signal BOUT of the streetlight ahead, signal FOUT of this streetlight is connected to signal BIN of the streetlight ahead, signal BIN of this streetlight is connected to signal FOUT of the streetlight behind, and signal BOUT of this streetlight is connected to signal FIN of the streetlight behind. The PWM square wave generator module outputs a PWM signal. The PWM square wave generator module can use the NE555 chip. This module's PWM signal outputs a 0V-12V square wave with a fixed period and pulse width. The high-level pulse width can be approximately 6.5ms, and the period T can be approximately 9.8ms. Transceiver module (with pulse width attenuation): 1. When signal S_EN is low, the front and rear receiver modules transmit the incoming signals. For example, consider signals BIN and FOUT. In static mode, BIN and FOUT are high. When BIN is pulled low, Q8 quickly turns off, and C5 begins charging for a period of time until it reaches the gate voltage of Q7. This causes Q7 to turn on, and FOUT is subsequently pulled low. After a period of time, BIN transitions to a high level, causing Q8 to quickly turn on and discharge C5's charge through R16. Q7 then turns off, and FOUT is subsequently pulled high. This shortens the pulse width of a low-level signal as it passes from BIN to FOUT. This shortening depends on resistor R_F, resistor R16 (which has a small resistance and can be ignored), capacitor C5, and the gate voltage of Q7. A similar principle applies to the transmission of signals FIN to BOUT. This type of signal transmission is called "pulse width attenuation." When signal S_EN is high, Q10 and Q23 quickly turn on, and Q7 and Q21 subsequently turn off. This prevents the valid signals from BIN and FIN from being transmitted forward. When the S_EN signal is high, Q20 quickly opens, followed by Q19, and C7 begins charging to the gate turn-on voltage of Q18 (this time can be approximately 63µs. The purpose of the slight delay is to prevent the BIN and FIN signals from overlapping with the active level of the PWM signal (PWM high level is valid)). Then Q18 opens, followed by Q17 closing. The PWM square wave signal begins to be converted into an inverted square wave signal through Q13 and Q14 and transmitted from FOUT and BOUT. At this time, the transceiver module sends the set original pulse width square wave signal to the front and rear through FOUT and BOUT. 3. When the S_EN signal turns low again, Q20 quickly closes, followed by Q19 opening, Q18 quickly closing, Q17 opening, and Q13 and Q14 closing. When S_EN turns low again, the transceiver module begins to transmit the signals from the front and rear again.

[0049] When a street lamp system detects an object or person after the ambient light is lower than the set threshold, it will light up the street lamp and send a valid original pulse width signal to the street lamps connected to it. If the street lamp next to it has not detected the object or person, the signal will be "pulsed attenuated" and then transmitted to the next street lamp, and so on, until the effective signal pulse width decays to 0 and the transmission ends. By changing the resistance value of resistor R_F or R_B in this way, the number of effective signals transmitted forward or backward can be set. On the road, especially on the expressway, when a vehicle or other people or objects move, the street lamp will light up a fixed number of street lamps in advance (the signal transmission speed is much greater than the speed of the vehicle). After the vehicle passes, the street lamp will remain on for a certain period of time and then go out if no movement is detected and no effective signal is received. If the ambient light is greater than the set threshold and no effective signal is received, the street lamp will remain off. If you want to control the turning on of all signal-connected street lamps starting from a certain street lamp (or backward) at any time, simply pull down the FIN signal (or BIN signal) to a low level. The power supply described in this embodiment is a 12V voltage signal.

[0050] Example 2

[0051] The electrical appliance signal transmission circuit includes: Y transceiver modules connected in series, wherein the Xth transceiver module is used to output a start signal to the electrical appliance upon receiving a start signal, and simultaneously attenuate the received start signal as a start signal for the X+1th transceiver module and output it to the X+1th transceiver module, where Y and X are both positive integers, and X<Y. The transceiver module includes a reverse attenuation unit, each reverse attenuation unit includes a reverse input terminal BIN, a reverse output terminal FOUT, an eighteenth resistor R18, an eighth NMOS transistor Q8, a sixteenth resistor R16, and a seventh NMOS transistor Q7 connected in sequence between the reverse input terminal BIN and the reverse output terminal FOUT, a first variable resistor RF, a fifth capacitor C5, and a fourteenth resistor R14, the source of the eighth NMOS transistor Q8 is grounded, the gate is connected to the eighteenth resistor R18, and the drain is connected to the first variable resistor RF, the source of the seventh NMOS transistor Q7 is grounded, the gate is connected to the sixteenth resistor R16, and the drain is connected to the fourteenth resistor R14, one end of the fifth capacitor C5 is connected between the sixteenth resistor R16 and the gate of the seventh NMOS transistor Q7, and the other end thereof is grounded; the reverse input terminal BIN and the reverse output terminal FOUT are connected in sequence. The terminal FOUT is at a high level in static state. When the reverse input terminal BIN is about to reach a low level, the first NMOS transistor Q8 is turned off, the first capacitor C5 starts to charge to the gate voltage of Q7, and the second NMOS transistor Q7 is turned on. Subsequently, the reverse output terminal FOUT is about to reach a low level. The reverse input terminal BIN rises to a high level after a period of time. The first NMOS transistor Q8 is turned on and discharges the charge of the first capacitor C5 through the second resistor R16. The second NMOS transistor Q7 is then turned off, and the reverse output terminal FOUT is then increased to a high level. The low-level pulse width signal PWM passes through the reverse input terminal BIN and the reverse output terminal FOUT, and the pulse width time of the pulse width signal PWM is shortened. The decay time can be adjusted by adjusting the first variable resistor RF, the sixteenth resistor R16, the fifth capacitor C5, and the gate turn-on voltage of the seventh NMOS transistor Q7.The transceiver module includes a forward attenuation unit, each of which includes a forward input terminal FIN, a forward output terminal BOUT, a thirty-ninth resistor R39, a twenty-second NMOS transistor Q22, a thirty-eighth resistor R38, and a twenty-first NMOS transistor Q21, a second variable resistor RB, an eighth capacitor C8, and a twenty-fifth resistor R25, which are sequentially connected between the forward input terminal FIN and the forward output terminal BOUT. The source of the twenty-second NMOS transistor Q22 is grounded, the gate is connected to the thirty-ninth resistor R39, and the drain is connected to the second variable resistor RB. The source of the twenty-first NMOS transistor Q21 is grounded, the gate is connected to the thirty-eighth resistor R38, and the drain is connected to the twenty-fifth resistor R25. One end of the eighth capacitor C8 is connected between the thirty-eighth resistor R38 and the gate of the twenty-first NMOS transistor Q21, and the other end is grounded. In static mode, T is always high. When the positive input terminal FIN reaches a low level, the twenty-second NMOS transistor Q22 turns off, the eighth capacitor C8 begins to charge to the gate voltage of the twenty-first NMOS transistor Q21, and the twenty-first NMOS transistor Q21 turns on. Subsequently, the positive output terminal BOUT reaches a low level. After a period of time, the positive input terminal FIN rises to a high level, the twenty-second NMOS transistor Q22 turns on and discharges the charge of the eighth capacitor C8 through the thirty-eighth resistor R38. The twenty-first NMOS transistor Q21 then turns off, and the positive output terminal BOUT rises to a high level. The low-level pulse width signal PWM passes through the positive input terminal FIN and the positive output terminal BOUT, shortening the pulse width of the pulse width signal PWM. The decay time can be adjusted by adjusting the second variable resistor RB, the thirty-eighth resistor R38, the eighth capacitor C8, and the gate turn-on voltage of the twenty-first NMOS transistor Q21. In this embodiment, the power supply is a 12V voltage signal.

[0052] Example 3

[0053] like Figure 7-11 As shown, the difference between this embodiment and the first embodiment is that: in this embodiment, the transceiver module includes a voltage signal attenuation unit, which is used to receive the start signal output by the sensor module and attenuate the voltage signal before sending it to the adjacent transceiver module.

[0054] like Figure 6-9As shown, the transceiver module includes a signal line BIO-FIO of the lighting device, a control signal line B_CTRL-F_CTRL of the lighting device, a forty-fourth resistor R44 having a front end connected to the signal line BIO side and a rear end connected to the signal line FIO side, a forty-fifth resistor R45 having one end connected to the rear end of the forty-fourth resistor R44 and the other end grounded, a forty-first resistor R41 and a twenty-fourth NMOS transistor Q24 connected between the front end of the forty-fourth resistor R44 and the input end of the driving module, a forty-third resistor R43 and a twenty-seventh NMOS transistor Q27 connected between the rear end of the forty-fourth resistor R44 and the input end of the driving module, a twenty-fifth NMOS transistor Q25, a forty-second resistor R42, and a twenty-sixth NMOS transistor Q26 connected between the rear end of the forty-fourth resistor R44 and the output end of the motion signal SEN, and a connection between the control signal line B_CTRL-F_CTRL and the driving module. A forty-sixth resistor R46 and a twenty-eighth NMOS transistor Q28 are connected between the input terminals. The source of the twenty-fifth NMOS transistor Q25 is connected to the rear end of the forty-fourth resistor R44, and its gate is connected to the drain of the twenty-sixth NMOS transistor Q26. Its drain is connected to the power supply and the forty-second resistor R42. The source of the twenty-sixth NMOS transistor is grounded, its gate is connected to the output terminal of the motion signal SEN, and its drain is connected to the gate of the twenty-fifth NMOS transistor Q25 and the forty-second resistor R42. The source of the twenty-fourth NMOS transistor Q24 is grounded, its gate is connected to the front end of the forty-fourth resistor R44, and its drain is connected to the input terminal of the drive module. The source of the twenty-seventh NMOS transistor Q27 is grounded, its gate is connected to the rear end of the forty-fourth resistor R44, and its drain is connected to the input terminal of the drive module. The source of the twenty-eighth NMOS transistor Q28 is grounded, its gate is connected to the forty-sixth resistor R46, and its drain is connected to the input terminal of the drive module.

[0055] Signal F_IO in the transceiver module represents the input or output signal for the front road lighting device, while signal B_IO represents the input or output signal for the rear road lighting device. Signal F_CTRL represents the control signal for the front road lighting device, while signal B_CTRL represents the control signal for the rear road lighting device. When signals B_CTRL and F_CTRL are in contact, they function as a unified control signal. Transceiver Module: 1. When signal S_EN is low, the front and rear transceiver modules transmit the signals coming from the front and rear. The voltage signal coming from B_IO or F_IO is attenuated before being transmitted to the next lighting device. If the voltage at B_IO is greater than 1.5V, Q24 turns on, pulling L_EN low. Resistors R44 and R45 can be used to set the attenuation ratio (the attenuation ratio is dependent on R44, R45, and the number of cascaded lighting devices). 2. When signal S_EN is high, Q26 turns on, which in turn turns on Q25, and a 12V voltage signal is transmitted to B_IO and F_IO.

[0056] Signals B_CTRL and F_CTRL are connected in this circuit and serve as control signals. When signal B_CTRL is low, Q27 is off. When signal B_CTRL is high, Q27 is on and signal L_EN is pulled low.

[0057] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. A lighting equipment signal transmission system, comprising: Y lighting devices, sensor modules corresponding one-to-one to the lighting devices, and transceiver modules corresponding one-to-one to the lighting devices, wherein the sensor modules are used to determine whether the lighting devices need to be turned on and send a turn-on signal to the transceiver modules when the lighting devices need to be turned on; it is characterized in that: the Y transceiver modules are connected in series, wherein the Xth transceiver module is used to output a turn-on signal to the lighting device upon receiving the turn-on signal, and at the same time, attenuate the received turn-on signal as the turn-on signal of the X+1th transceiver module and output it to the X+1th transceiver module, thereby turning on the lighting device corresponding to the X+1th transceiver module in advance, Y and X are both positive integers, and X<Y.

2. The lighting equipment signal transmission system according to claim 1, wherein: The sensing module includes a light intensity sensing module and several motion sensing modules. The light intensity sensing module is used to determine whether to turn on the lighting device based on the light intensity. The motion sensing module is used to output a turn-on signal to the corresponding transceiver module when the light intensity sensing module outputs a signal that the lighting device needs to be turned on and an object enters the sensing range.

3. The lighting equipment signal transmission system according to claim 2, wherein: The system also includes a sensing signal processing module, and the motion sensing module has an output end. When no object enters the sensing range, the motion sensing signal S of the output signal is a low-level signal; when there is or is no object entering the sensing range, the motion sensing signal S is a high-level signal; when the light intensity is less than a set threshold, the light intensity signal LEN of the output signal of the light intensity sensing module is a high-level signal; when the light intensity is not less than the set threshold, the light intensity signal LEN of the output signal of the light intensity sensing module is a low-level signal; when the motion sensing signal S is a high-level signal and the light intensity signal LEN is a low-level signal, the sensing signal processing module outputs a high-level pulse width signal PWM_EN to the lighting device to start the lighting device.

4. The lighting equipment signal transmission system according to claim 3, wherein: The sensing signal processing module includes motion sensing signal processing units corresponding to the motion sensing modules respectively, and a sensing signal judgment unit that outputs a high-level pulse width signal PWM_EN when the motion sensing signal S is a high-level signal and the light intensity signal LEN is a low-level signal.

5. The lighting equipment signal transmission system according to claim 4, characterized in that: The motion sensing signal processing units are respectively a first motion sensing signal processing unit, a second motion sensing signal processing unit, ..., an Nth motion sensing signal processing unit having the same structure. The first motion sensing signal processing unit includes a first resistor R1 having one end connected to the output end of the motion sensing module, a first NMOS transistor Q1 having a gate connected to the other end of the first resistor R1 and a drain connected to the sensing signal judgment unit, and a second resistor R2 having one end connected to the output end of the motion sensing module and the other end grounded. The source of the first NMOS transistor Q1 is grounded.

6. The lighting equipment signal transmission system according to claim 1, wherein: The system includes a PWM square wave generation module, which outputs a square wave with a fixed period and pulse width. The transceiver module attenuates the pulse width signal generated by the PWM square wave according to a set amplitude. When receiving a start signal, the transceiver module outputs the start signal to the lighting device and at the same time attenuates the received start signal as the start signal of the next transceiver module and outputs it to the next transceiver module.

7. The lighting equipment signal transmission system according to claim 1, characterized in that: The system also includes a driving module corresponding to each lighting device. The driving module is used to receive the start signal sent by the previous transceiver module after attenuation processing and output it to the corresponding lighting device to turn on the lighting device in advance, and at the same time delay the shutdown of the corresponding lighting device.

8. An electrical signal transmission circuit, characterized in that: It includes: Y transceiver modules are connected in series, wherein the Xth transceiver module is used to output a power-on signal to the appliance upon receiving a power-on signal, and simultaneously attenuate the received power-on signal as a power-on signal for the X+1th transceiver module and output it to the X+1th transceiver module, wherein Y and X are both positive integers, and X<Y.

9. The electrical appliance signal transmission circuit according to claim 8, characterized in that: The transceiver module includes a reverse attenuation unit. The reverse input terminal BIN and the reverse output terminal FOUT are both at a high level in static state. When the reverse input terminal BIN is about to reach a low level, the reverse output terminal FOUT is about to reach a low level. After a period of time, the reverse input terminal BIN rises to a high level, and the reverse output terminal FOUT rises to a high level accordingly. The low-level pulse width signal PWM passes through the reverse input terminal BIN and the reverse output terminal FOUT, and the pulse width time of the pulse width signal PWM is shortened.

10. The electrical appliance signal transmission circuit according to claim 8, characterized in that: The transceiver module includes a forward attenuation unit, each of the forward attenuation units includes a forward input terminal FIN and a forward output terminal BOUT. The forward input terminal FIN and the forward output terminal BOUT are both at a high level in static state. When the forward input terminal FIN is about to reach a low level, the forward output terminal BOUT is about to reach a low level. The forward input terminal FIN rises to a high level after a period of time, and the forward output terminal BOUT rises to a high level accordingly. The low-level pulse width signal PWM passes through the positive input terminal FIN and the positive output terminal BOUT, and the pulse width time of the pulse width signal PWM is shortened.

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