CN219266529U - Automobile blind area monitoring device - Google Patents
Automobile blind area monitoring device Download PDFInfo
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- CN219266529U CN219266529U CN202223534780.7U CN202223534780U CN219266529U CN 219266529 U CN219266529 U CN 219266529U CN 202223534780 U CN202223534780 U CN 202223534780U CN 219266529 U CN219266529 U CN 219266529U
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Abstract
The utility model discloses an automobile blind area monitoring device, a controller receives a distance signal between an obstacle output by a radar sensor and an automobile, the distance signal is filtered by a band-pass filter, one path of the distance signal enters a comparator to be compared with a distance threshold value, when the distance signal is lower than the distance threshold value, the comparator outputs a high level, +5V is boosted by an electrolytic capacitor and a diode and is transmitted backwards by a bidirectional thyristor SD1 which is divided or conducted by a resistor R7, the other path of the distance signal enters an integrator to calculate the change rate of the distance signal between the obstacle and the automobile, the change rate is positive, the distance signal is reversely charged by a resistor R5 and a capacitor C6 and is overlapped with +5V by an inductor L4, the effect of reducing the +5V signal is achieved, when the change rate is negative, the diode D3 is conducted, the bidirectional thyristor SD1 is conducted, the voltage dividing resistor R7 is not in action, and when the voltage value is large after the voltage boosting, the bidirectional diode SD2 is conducted, and a triode Q4 is conducted, and an acousto-optic alarm is driven, so that the voltage is delayed or reduced by the threshold value comparison and the voltage boosting change rate is combined, the voltage boosting or voltage is reduced, and the phenomenon that an alarm or false alarm is generated is reduced.
Description
Technical Field
The utility model relates to the technical field of vehicle blind areas, in particular to an automobile blind area monitoring device.
Background
In the prior art, a radar is arranged at the front end or the tail end of an automobile to monitor the blind area of the automobile, and when the blind area obstacle is detected to be close to the automobile, namely, lower than a set distance threshold value, an audible and visual alarm is sent out to warn a driver, so that the automobile blind area monitoring device is a simple alarm triggered by comparison with the set distance threshold value, and the set distance threshold value is bigger or smaller, so that false alarm or alarm failure can be generated.
Disclosure of Invention
Aiming at the defects existing in the prior art, the utility model aims to provide the automobile blind area monitoring device, and effectively solves the problem that false alarm or alarm is not reached by adopting a radar to monitor the blind area.
The technical scheme is that the radar sensor comprises a radar sensor, a controller and an alarm, wherein the output end of the radar sensor is connected with the input end of the controller, and the output end of the controller is connected with the alarm;
the controller comprises an electrolytic capacitor C1, the negative electrode of the electrolytic capacitor C1 is connected with a radar sensor ranging signal, the positive electrode of the electrolytic capacitor C1 is respectively connected with one end of a grounding inductor L1 and the negative electrode of an electrolytic capacitor C2, the positive electrode of the electrolytic capacitor C2 is connected with one end of an inductor L2, the other end of the inductor L2 is respectively connected with one end of an inductor L3 and one end of the grounding capacitor C3, the other end of the inductor L3 is respectively connected with an inverting input end of an operational amplifier AR1, one end of a grounding resistor R2 and one end of a resistor R4, the non-inverting input end of the operational amplifier AR1 is connected with a distance threshold signal through the resistor R1, the output end of the operational amplifier AR1 is connected with the positive electrode of a diode D1, the negative electrode of the diode D1 is respectively connected with one end of a grounding capacitor C5, one end of a resistor R6 and the base electrode of a triode Q1, the collector electrode of the triode Q1 and the other end of the resistor R6 are connected with a power supply +5V, the emitter of the triode Q1 is respectively connected with one end of an inductor L4 and the positive electrode of an electrolytic capacitor C7, the negative electrode of the electrolytic capacitor C7 is respectively connected with the negative electrode of a diode D4 and the positive electrode of a diode D5, the positive electrode of the diode D4 is connected with the ground, the negative electrode of the diode D5 is respectively connected with the positive electrode of an electrolytic capacitor C8, one end of a resistor R7 and the left end of a bidirectional thyristor SD1, the negative electrode of the electrolytic capacitor C8 is connected with the ground, the right end of the bidirectional thyristor SD1 is respectively connected with the other end of the resistor R7 and the left end of a bidirectional diode SD2, the other end of the resistor R4 is connected with the inverting input end of an operational amplifier AR2, one end of a resistor R3 and one end of a capacitor C4, the non-inverting input end of the operational amplifier AR2 is connected with the ground, the output end of the operational amplifier AR2 is respectively connected with the other end of the resistor R3, the positive electrode of the diode D2 and the negative electrode of the diode D3, and the negative electrode of the diode D2 is connected with one end of the resistor R5, the other end of the resistor R5 is respectively connected with one end of the grounding capacitor C6 and the other end of the inductor L4, and the positive electrode of the diode D3 is connected with the control electrode of the bidirectional thyristor SD 1.
The utility model has the beneficial effects that: a band-pass filter is adopted to receive the distance signal between the obstacle output by the radar sensor and the vehicle, one path of the distance signal enters a comparator to be compared with a distance threshold value, when the distance signal is lower than the distance threshold value, a high level is output, a triode Q1 is conducted, +5V is boosted by an electrolytic capacitor and a diode, the voltage is transmitted backwards through a resistor R7 and a two-way thyristor which is divided or conducted, the other path of the distance signal enters an integrator to calculate the change rate of the distance signal between the obstacle and the vehicle, the change rate is positive, the diode D2 is conducted, the two-way thyristor is reversely charged through a resistor R5 and a capacitor C6 and is overlapped with +5V, the effect of reducing the +5V signal is achieved, when the change rate is negative, the diode D3 is conducted, the two-way thyristor SD1 is conducted, the voltage dividing resistor R7 is not in effect, when the voltage value is large after the voltage boosting, the two-way diode SD2 is conducted, the triode Q4 is conducted, the LED1 is driven to be lightened, the buzzer LS1 is sounded to give an alarm, the threshold value is compared, the voltage boosting is delayed or the voltage is reduced, the voltage is delayed when the distance signal is lower than the threshold value and the threshold value is smaller, the sound and the alarm signal is smaller and the sound and light is further delayed, and the alarm can not be further reduced.
Drawings
Fig. 1 is a schematic circuit diagram of the present utility model.
Detailed Description
The foregoing and other features, aspects and advantages of the present utility model will become more apparent from the following detailed description of the embodiments, which proceeds with reference to the accompanying fig. 1. The following embodiments are described in detail with reference to the drawings.
Exemplary embodiments of the present utility model will be described below with reference to the accompanying drawings.
The first embodiment of the automobile blind area monitoring device comprises a radar sensor, a controller and an alarm, wherein the output end of the radar sensor is connected with the input end of the controller, and the output end of the controller is connected with the alarm;
the controller receives the distance signal between the obstacle and the vehicle output by the radar sensor, the distance signal is filtered by a high-pass filter composed of capacitors C1 and C2 and an inductor L1, a low-pass filter composed of inductors L2 and L3 and a capacitor C3, one path of the distance signal enters a comparator composed of an operational amplifier AR1, resistors R1 and R2 to be compared with a distance threshold value, when the distance signal is lower than the distance threshold value, the comparator outputs a high level, the high level is added to a base electrode of a triode Q1 through a diode D1, the triode Q1 is conducted, +5V is boosted through electrolytic capacitors C7 and C8 and diodes D4 and D5, the voltage is divided or conducted through a resistor R7, a bidirectional thyristor SD1 is transmitted backwards, the other path of the distance signal enters an integrator composed of an operational amplifier AR2, resistors R3 and R4 and a capacitor C4, the change rate of the distance signal between the obstacle and the vehicle is calculated, the change rate is positive, the diode D2 is conducted, the distance signal is reversely charged through a resistor R5 and a capacitor C6, and then the distance signal is overlapped with +5V through the inductor L4, when the change rate is negative, the diode D3 is conducted, the bidirectional thyristor SD1 is conducted, the divider resistor R7 is not acted, when the voltage value is large after boosting, the bidirectional diode SD2 is conducted, the triode Q4 is conducted, the LED1 is driven to be on, the buzzer LS1 sounds to give an alarm, the device comprises an electrolytic capacitor C1, the cathode of the electrolytic capacitor C1 is connected with a radar sensor ranging signal, the anode of the electrolytic capacitor C1 is respectively connected with one end of a grounding inductor L1 and the cathode of the electrolytic capacitor C2, the anode of the electrolytic capacitor C2 is connected with one end of the inductor L2, the other end of the inductor L2 is respectively connected with one end of the inductor L3 and one end of the grounding capacitor C3, the other end of the inductor L3 is respectively connected with an inverting input end of the operational amplifier AR1, one end of the grounding resistor R2 and one end of the resistor R4, the non-inverting input end of the operational amplifier AR1 is connected with a distance threshold signal through the resistor R1, the output end of the operational amplifier AR1 is connected with the positive electrode of the diode D1, the negative electrode of the diode D1 is respectively connected with one end of the grounding capacitor C5, one end of the resistor R6 and the base electrode of the triode Q1, the collector electrode of the triode Q1 and the other end of the resistor R6 are connected with the power supply +5V, the emitter electrode of the triode Q1 is respectively connected with one end of the inductor L4 and the positive electrode of the electrolytic capacitor C7, the negative electrode of the electrolytic capacitor C7 is respectively connected with the negative electrode of the diode D4 and the positive electrode of the diode D5, the positive electrode of the diode D4 is connected with the ground, the negative electrode of the diode D5 is respectively connected with the positive electrode of the electrolytic capacitor C8, one end of the resistor R7 and the left end of the bidirectional thyristor SD1, the right end of the bidirectional thyristor SD1 is respectively connected with the other end of the resistor R7 and the left end of the bidirectional diode SD2, the other end of the resistor R4 is connected with the inverting input end of the operational amplifier AR2, one end of the resistor R3 and one end of the capacitor C4, the non-inverting input end of the operational amplifier AR2 is respectively connected with the negative electrode of the capacitor C2, the other end of the resistor R3 is connected with the positive electrode of the diode D2, and the other end of the diode D2 is connected with the negative electrode of the diode 3 and the other end of the resistor 3 is connected with the positive electrode of the diode D3.
In the second embodiment, based on the first embodiment, the alarm receives the output signal from the controller, and further judges the on-voltage value of the bidirectional diode SD2, when the output signal is high, the bidirectional diode SD1 is turned on, the output signal is added to the base of the triode Q4, and then the triode Q4 is turned on, to drive the light emitting diode LED1 to be on, the buzzer LS1 sounds to alarm, so that the voltage division is delayed or reduced by the threshold comparison and the voltage-increasing combination change rate, when the distance signal is smaller and smaller, the immediate audible and visual alarm is realized, and when the distance signal is smaller and larger and smaller, the delay is further judged, and the phenomenon that false alarm or alarm is not generated can be reduced.
Claims (2)
1. The automobile blind area monitoring device comprises a radar sensor, a controller and an alarm, and is characterized in that the output end of the radar sensor is connected with the input end of the controller, and the output end of the controller is connected with the alarm;
the controller comprises an electrolytic capacitor C1, the negative electrode of the electrolytic capacitor C1 is connected with a radar sensor ranging signal, the positive electrode of the electrolytic capacitor C1 is respectively connected with one end of a grounding inductor L1 and the negative electrode of an electrolytic capacitor C2, the positive electrode of the electrolytic capacitor C2 is connected with one end of an inductor L2, the other end of the inductor L2 is respectively connected with one end of an inductor L3 and one end of the grounding capacitor C3, the other end of the inductor L3 is respectively connected with an inverting input end of an operational amplifier AR1, one end of a grounding resistor R2 and one end of a resistor R4, the non-inverting input end of the operational amplifier AR1 is connected with a distance threshold signal through the resistor R1, the output end of the operational amplifier AR1 is connected with the positive electrode of a diode D1, the negative electrode of the diode D1 is respectively connected with one end of a grounding capacitor C5, one end of a resistor R6 and the base electrode of a triode Q1, the collector electrode of the triode Q1 and the other end of the resistor R6 are connected with a power supply +5V, the emitter of the triode Q1 is respectively connected with one end of an inductor L4 and the positive electrode of an electrolytic capacitor C7, the negative electrode of the electrolytic capacitor C7 is respectively connected with the negative electrode of a diode D4 and the positive electrode of a diode D5, the positive electrode of the diode D4 is connected with the ground, the negative electrode of the diode D5 is respectively connected with the positive electrode of an electrolytic capacitor C8, one end of a resistor R7 and the left end of a bidirectional thyristor SD1, the negative electrode of the electrolytic capacitor C8 is connected with the ground, the right end of the bidirectional thyristor SD1 is respectively connected with the other end of the resistor R7 and the left end of a bidirectional diode SD2, the other end of the resistor R4 is connected with the inverting input end of an operational amplifier AR2, one end of a resistor R3 and one end of a capacitor C4, the non-inverting input end of the operational amplifier AR2 is connected with the ground, the output end of the operational amplifier AR2 is respectively connected with the other end of the resistor R3, the positive electrode of the diode D2 and the negative electrode of the diode D3, and the negative electrode of the diode D2 is connected with one end of the resistor R5, the other end of the resistor R5 is respectively connected with one end of the grounding capacitor C6 and the other end of the inductor L4, and the positive electrode of the diode D3 is connected with the control electrode of the bidirectional thyristor SD 1.
2. The device for monitoring the dead zone of the automobile according to claim 1, wherein the alarm comprises a bidirectional diode SD2, the left end of the bidirectional diode SD2 is connected with the right end of a bidirectional thyristor SD1, the right end of the bidirectional diode SD2 is connected with one end of a resistor R8, the other end of the resistor R8 is respectively connected with the base electrode of a triode Q4 and one end of a resistor R10, the emitter electrode of the triode Q4 is connected with the ground through a resistor R9, the collector electrode of the triode Q4 is respectively connected with the negative electrode of a light emitting diode LED1 and the negative electrode of a buzzer LS1, the positive electrode of the light emitting diode LED1 is connected with one end of a resistor R11, the positive electrode of the buzzer LS1 is connected with one end of a resistor R12, and the other end of the resistor R10, the other end of the resistor R11 and the other end of the resistor R12 are connected with a power supply +5v.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223534780.7U CN219266529U (en) | 2022-12-29 | 2022-12-29 | Automobile blind area monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223534780.7U CN219266529U (en) | 2022-12-29 | 2022-12-29 | Automobile blind area monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219266529U true CN219266529U (en) | 2023-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223534780.7U Active CN219266529U (en) | 2022-12-29 | 2022-12-29 | Automobile blind area monitoring device |
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| Country | Link |
|---|---|
| CN (1) | CN219266529U (en) |
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- 2022-12-29 CN CN202223534780.7U patent/CN219266529U/en active Active
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