Microwave radar vehicle-mounted lamp control circuit
By using a microwave radar vehicle light control circuit to display the distance to vehicles behind on the instrument panel of the electric-assisted bicycle, the problem of electric-assisted bicycles being unable to indicate the distance to vehicles behind is solved, thus improving driving safety.
Patent Information
- Application Number
- CN202520406896.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Electric bicycles lack rearview mirrors, and the existing taillights can only warn vehicles behind them to brake, but cannot inform the rider of the distance to vehicles behind them, resulting in insufficient driving safety.
The vehicle lighting control circuit uses microwave radar. It receives distance information of vehicles behind through microwave radar signal processing circuit, displays the distance on the instrument panel using microprocessor control circuit, and controls the working status of the vehicle lights for early warning through CAN communication.
It enables the display of the distance to vehicles behind on the instrument panel of the electric-assisted bicycle, improving the rider's ability to provide safety warnings of vehicles behind, and facilitating safe steering or driving.
Smart Images
Figure CN223744957U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the electric moped tail light control technical field, concretely is a microwave radar vehicle lamp control circuit. BACKGROUND
[0002] With the continuous development of electric moped industry, the consumer's driving safety requirement of electric moped is higher and higher, and the vehicle-mounted tail light in electric moped is a kind of widely used signal light, which plays an important role in reminding rear vehicle to keep driving safety distance.
[0003] Electric moped usually has no rearview mirror, only instrument. In prior art, acceleration sensor is commonly used as automatic brake induction, and the owner of rear vehicle is reminded to change speed brake through tail light flicker, and the owner is reminded through instrument;Since the brake light of electric moped tail light is automatically turned on, only the rear vehicle warning can be reminded, and the distance between the rear vehicle and the vehicle cannot be informed to the owner. UTILITY MODEL CONTENTS
[0004] In view of the problems existing in the prior art, the utility model provides a microwave radar vehicle lamp control circuit to display the distance between the rear vehicle and the vehicle on the instrument of electric moped, which is convenient for the owner of electric moped to control the working state of vehicle-mounted lamp to warn the distance of rear vehicle, and also convenient for the owner of electric moped to safely steer or drive.
[0005] Therefore, the utility model adopts the following technical scheme: a microwave radar vehicle lamp control circuit, comprising a microprocessor control circuit and a microwave radar signal processing circuit, the microwave radar signal processing circuit receives microwave radar signal and communicates to microprocessor control circuit through IIC;
[0006] The microprocessor control circuit comprises a first resistor, a first capacitor, a second capacitor, a crystal oscillator and a microprocessor control chip;
[0007] One end of the first resistor is connected with the first pin of the microprocessor control chip, and the other end is grounded;The first capacitor and the second capacitor are connected with the crystal oscillator respectively;The two ends of the crystal oscillator are connected with the second and third pins of the microprocessor control chip respectively;
[0008] The tenth and eleventh pins of the microprocessor control chip are connected with CAN communication circuit, and the CAN communication circuit communicates with the instrument through CAN;The pin of the microprocessor control chip is connected with vehicle-mounted lamp circuit;
[0009] The microwave radar signal processing circuit comprises a third resistor, a fourth resistor and a microwave radar signal processing chip, and the microwave radar signal processing chip is connected with the microwave radar installed at the tail of the vehicle for receiving microwave radar signal;
[0010] The two ends of the third resistor are connected with the first and second pins of a microwave radar signal processing chip respectively, the two ends of the fourth resistor are connected with the first and third pins of the microwave radar signal processing chip, and the second and third pins of the microwave radar signal processing chip are also connected with the eighth and ninth pins of a microprocessor control chip respectively, so that IIC communication is realized.
[0011] The utility model discloses a microwave radar is used to detect the distance of the rear vehicle, and through the microwave radar signal processing circuit, the microwave radar signal is received and is communicated to the microprocessor control circuit through IIC, and after the microprocessor control circuit carries out CAN communication with the instrument, the distance of the rear vehicle can be displayed on the instrument of the electric power-assisted vehicle.
[0012] Further, the first pin of the microwave radar signal processing chip is connected with a third voltage stabilizing circuit, and the third voltage stabilizing circuit is connected with a sixth capacitor, and the sixth capacitor is used to filter high-frequency noise on the power supply.
[0013] Further, the pin of the microprocessor control chip is connected with a voltage stabilizing circuit, and the voltage stabilizing circuit is connected with a voltage stabilizing capacitor, and the voltage stabilizing capacitor is used to filter high-frequency noise on the power supply.
[0014] Further, the vehicle lamp circuit includes a tail lamp circuit, the tail lamp circuit is connected with the pin of the microprocessor control chip, and the tail lamp circuit is used to control the working of the tail lamp.
[0015] Further, the vehicle lamp circuit includes a brake lamp circuit, the brake lamp circuit is connected with the pin of the microprocessor control chip, and the brake lamp circuit is used to control the working of the brake lamp.
[0016] Further, the vehicle lamp circuit includes a left turn lamp circuit, the left turn lamp circuit is connected with the pin of the microprocessor control chip, and the left turn lamp circuit is used to control the working of the left turn lamp.
[0017] Further, the vehicle lamp circuit includes a right turn lamp circuit, the right turn lamp circuit is connected with the pin of the microprocessor control chip, and the right turn lamp circuit is used to control the working of the right turn lamp.
[0018] Further, the pin of the microprocessor control chip is connected with a reset circuit, and the reset circuit includes a second resistor and a third capacitor connected with the second resistor in series.
[0019] Further, the eighth pin of the microprocessor control chip is connected with the second pin of the microwave radar signal processing chip through an SDA line.
[0020] Further, the ninth pin of the microprocessor control chip is connected with the third pin of the microwave radar signal processing chip through the SCL line.
[0021] The utility model has the following beneficial effects: the utility model realizes the display of the distance of the rear vehicle (including the left rear and the right rear) on the instrument of the electric power-assisted vehicle, facilitates the electric power-assisted vehicle owner to control the working state of the vehicle-mounted lamp and to give the distance warning to the rear vehicle, and is convenient for the electric power-assisted vehicle owner to steer or drive safely. BRIEF DESCRIPTION OF DRAWINGS
[0022] Figure 1 It is the principle view of the microwave radar vehicle-mounted lamp control circuit of the utility model;
[0023] Figure 2 It is the microprocessor control circuit diagram of the utility model;
[0024] Figure 3 It is the CAN communication circuit diagram of the utility model;
[0025] Figure 4 It is the reset circuit diagram of the utility model;
[0026] Figure 5 It is the microwave radar signal processing circuit diagram of the utility model;
[0027] Figure 6 It is the Buck step-down circuit diagram of the utility model;
[0028] Figure 7 It is the LDO voltage stabilizing circuit diagram of the utility model. DETAILED DESCRIPTION
[0029] The specific embodiments described here are only used to explain the utility model, and are not used to limit the utility model.
[0030] The utility model is a kind of microwave radar vehicle-mounted lamp control circuit, it is mainly composed of microprocessor control circuit and microwave radar signal processing circuit, the microwave radar signal processing circuit receives microwave radar signal and is communicated to microprocessor control circuit by IIC, as shown in Figure Figure 1 .
[0031] As shown in Figure Figure 2 , the microprocessor control circuit includes first resistance R11, second resistance R12, first capacitor C8, second capacitor C9, third capacitor C10, fourth capacitor C11, fifth capacitor C12, crystal oscillator Y1 and microprocessor control chip U3.
[0032] One end of the first resistor R11 is connected with the first pin of the microprocessor control chip U3, and the other end is grounded; the first capacitor C8 and the second capacitor C9 are connected with the crystal oscillator Y1 respectively; two ends of the crystal oscillator Y1 are connected with the second and third pins of the microprocessor control chip U3 respectively.
[0033] The tenth and eleventh pins of the microprocessor control chip U3 are connected with the CAN communication circuit, and the CAN communication circuit is used for CAN communication with the instrument. Figure 3
[0034] The fifth pin of the microprocessor control chip U3 is connected with the first voltage stabilizing circuit, and the first voltage stabilizing circuit is connected with the fourth capacitor C11, and the other end of the fourth capacitor C11 is grounded. The fifteenth and sixteenth pins of the microprocessor control chip U3 are connected with the second voltage stabilizing circuit, and the second voltage stabilizing circuit is connected with the fifth capacitor C12, and the other end of the fifth capacitor C12 is grounded.
[0035] The fourth pin of the microprocessor control chip U3 is connected with a reset circuit, as shown in the figure, the reset circuit includes the second resistor R12 and the third capacitor C10 connected in series, and the other end of the third capacitor C10 is grounded, and the other end of the second resistor R12 is connected with the voltage stabilizing circuit. Figure 4
[0036] The twelfth pin of the microprocessor control chip U3 is connected with the tail lamp circuit; the thirteenth pin of the microprocessor control chip U3 is connected with the brake lamp circuit; the seventeenth pin of the microprocessor control chip U3 is connected with the left turn signal lamp circuit; and the eighteenth pin of the microprocessor control chip U3 is connected with the right turn signal lamp circuit.
[0037] The eighth pin of the microprocessor control chip U3 is connected with the second pin of the microwave radar signal processing chip U4 through the SDA line. The ninth pin of the microprocessor control chip U3 is connected with the third pin of the microwave radar signal processing chip U4 through the SCL line.
[0038] As shown in the figure, the microwave radar signal processing circuit includes the third resistor R20, the fourth resistor R22 and the microwave radar signal processing chip U4, and the microwave radar signal processing chip U4 is connected with the microwave radar installed at the tail of the vehicle and is used for receiving the microwave radar signal. Figure 5 Two ends of the third resistor R20 are connected with the first and second pins of the microwave radar signal processing chip U4 respectively, and two ends of the fourth resistor R22 are connected with the first and third pins of the microwave radar signal processing chip U4.
[0039]
[0040] The first pin of the microwave radar signal processing chip U4 is connected with a second voltage stabilizing circuit, the second voltage stabilizing circuit is connected with a sixth capacitor C17, and the other end of the sixth capacitor C17 is grounded.
[0041] The voltage stabilizing circuit, the first voltage stabilizing circuit, the second voltage stabilizing circuit and the third voltage stabilizing circuit are all composed of a Buck voltage reduction circuit and an LDO voltage stabilizing circuit, the Buck voltage reduction circuit is used for reducing 12V to 5V, as shown in the figure; the LDO voltage stabilizing circuit is used for reducing 5V to 3V, as shown in the figure. Figure 6 Figure 7
[0042] The above-mentioned embodiments only express the implementation manners of the present application, the description is relatively specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that, for the ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A microwave radar vehicle lamp control circuit comprising a microprocessor control circuit and a microwave radar signal processing circuit, characterized by, The microwave radar signal processing circuit receives the microwave radar signal and communicates to the microprocessor control circuit through IIC; The microprocessor control circuit comprises a first resistor, a first capacitor, a second capacitor, a crystal oscillator and a microprocessor control chip; One end of the first resistor is connected to a first pin of the microprocessor control chip, and the other end is grounded; the first capacitor and the second capacitor are respectively connected to the crystal oscillator; two ends of the crystal oscillator are respectively connected to a second pin and a third pin of the microprocessor control chip; The tenth and eleventh pins of the microprocessor control chip are connected to a CAN communication circuit, the CAN communication circuit communicates with the instrument through CAN; a pin of the microprocessor control chip is connected to a vehicle-mounted lamp circuit; The microwave radar signal processing circuit comprises a third resistor, a fourth resistor and a microwave radar signal processing chip, the microwave radar signal processing chip is connected to a microwave radar installed at the tail of the vehicle and is used for receiving the microwave radar signal; Two ends of the third resistor are respectively connected to a first pin and a second pin of the microwave radar signal processing chip, two ends of the fourth resistor are respectively connected to a first pin and a third pin of the microwave radar signal processing chip, and the second pin and the third pin of the microwave radar signal processing chip are respectively connected to an eighth pin and a ninth pin of the microprocessor control chip, so as to realize IIC communication.
2. A microwave radar vehicle lamp control circuit according to claim 1, wherein, The first pin of the microwave radar signal processing chip is connected to a third voltage stabilizing circuit, and the third voltage stabilizing circuit is connected to a sixth capacitor.
3. A microwave radar vehicle lamp control circuit according to claim 1, wherein, A pin of the microprocessor control chip is connected to a voltage stabilizing circuit, and the voltage stabilizing circuit is connected to a voltage stabilizing capacitor.
4. A microwave radar vehicle lamp control circuit according to claim 1, wherein, The vehicle-mounted lamp circuit comprises a tail lamp circuit, and the tail lamp circuit is connected to a pin of the microprocessor control chip.
5. A microwave radar vehicle lamp control circuit according to claim 1, wherein, The vehicle-mounted lamp circuit comprises a brake lamp circuit, and the brake lamp circuit is connected to a pin of the microprocessor control chip.
6. A microwave radar vehicle lamp control circuit according to claim 1, wherein, The vehicle-mounted lamp circuit comprises a left turn lamp circuit, and the left turn lamp circuit is connected to a pin of the microprocessor control chip.
7. A microwave radar vehicle lamp control circuit according to claim 1, wherein, The vehicle-mounted lamp circuit comprises a right turn lamp circuit, and the right turn lamp circuit is connected to a pin of the microprocessor control chip.
8. A microwave radar vehicle lamp control circuit according to claim 1, wherein, A pin of the microprocessor control chip is connected to a reset circuit, and the reset circuit comprises a second resistor and a third capacitor connected in series with the second resistor.
9. A microwave radar vehicle lamp control circuit according to claim 1, wherein, The eighth pin of the microprocessor control chip is connected to the second pin of the microwave radar signal processing chip through an SDA line.
10. A microwave radar vehicle lamp control circuit according to claim 1, wherein, The ninth pin of the microprocessor control chip is connected to the third pin of the microwave radar signal processing chip through an SCL line.