CN201926759U - Automatic adjustment circuit for residual vibration of car reversing radar sensor - Google Patents
Automatic adjustment circuit for residual vibration of car reversing radar sensor Download PDFInfo
- Publication number
- CN201926759U CN201926759U CN2011200053138U CN201120005313U CN201926759U CN 201926759 U CN201926759 U CN 201926759U CN 2011200053138 U CN2011200053138 U CN 2011200053138U CN 201120005313 U CN201120005313 U CN 201120005313U CN 201926759 U CN201926759 U CN 201926759U
- Authority
- CN
- China
- Prior art keywords
- circuit
- amplifier
- pin
- residual vibration
- remained shock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Radar Systems Or Details Thereof (AREA)
Abstract
The utility model relates to an adjustment circuit for residual vibration of an ultrasonic sensor, in particular to an automatic adjustment circuit for residual vibration of a car reversing radar sensor, which is characterized in that after an intermediate-frequency transformer inductor TX1 is connected with an analog inductor circuit with an adjustable analog inductance value in parallel, the intermediate-frequency transformer inductor TX1 and a piezoelectric ceramic equivalent circuit C200 form a resonance matching circuit. When residual vibration time is deviated from a set adjustment value, a single-chip microcomputer adjusts the analog inductance value by adjusting a digital resistor R5 to ensure that the inductor TX1 and an equivalent capacitor C200 form resonance matching after the inductor TX1 is connected with an analog inductor in parallel. The automatic adjustment of the residual vibration is realized by adopting a design principle of resonance matching; software is used for judging whether residual vibration parameters are excellent or not and inconsistency caused by a human subjective judgment is avoided; and after flue is filled in a product, secondary adjustment can be conducted to the residual vibration of the product. The automatic adjustment circuit for the residual vibration of the car reversing radar sensor can meet the increasing needs of customers and the market prospect is promising.
Description
Technical field
The utility model relates to a kind of ultrasonic sensor remained shock and adjusts circuit, relates in particular to radar for backing car sensor remained shock automatic circuit.
Background technology
Along with popularizing of automobile especially family saloon, the demand market of radar for backing car product enlarges rapidly, develops into standard configuration by original apolegamy gradually, and its consumption increases year by year.Usually adopt ultrasonic sensor to detect on the reversing path in the radar for backing car or near the barrier of existence, ultrasonic sensor is when work, send ultrasound wave by the sensor vibration, in sensor when vibration, is because the physics inertia of itself, when stopping, needs can't stop vibration immediately, need to be called remained shock this retardation time through just stopping vibration behind the certain hour.The operate as normal of ultrasonic sensor is disturbed in the existence of remained shock, influences the detection accuracy of radar for backing car, is unfavorable for the safety of moveing backward.The radar for backing car sensor circuit adopts inductor design at present, the remained shock adjustment is manually to adjust the consistance that I.F.T. (being commonly called as middle week) is realized remained shock mostly, as shown in Figure 2, it is that the resonance of all inductance TX1 and piezoelectric ceramics equivalent electrical circuit C200 mates in adjusting that tradition is adjusted the remained shock circuit, when this parametric resonance coupling, remained shock obtains minimum value.Because of the operator subjective factor, can not guarantee the consistance that all product parameters are adjusted during adjustment, and adjust and very expend man-hour; Even through after the parameter adjustment, product will pass through the encapsulating program aborning, influenced the changing of its remained shock parameter meeting, this moment, the product remained shock parameter of encapsulating can not be adjusted.
Summary of the invention
Technical problem to be solved in the utility model is to overcome defective of the prior art, and a kind of radar for backing car sensor remained shock automatic circuit is provided, and realizes the automatic adjustment of remained shock.
For solving the problems of the technologies described above, the utility model provides a kind of radar for backing car sensor remained shock automatic circuit, it is characterized in that, constitute the resonance match circuit with piezoelectric ceramics equivalent electrical circuit C200 after simulaed inductance 100 circuit that middle all inductance TX1 and simulaed inductance value are adjustable are in parallel.
Single-chip microcomputer 300 is connected with driving circuit 400, and driving circuit 400 is connected with described inductance TX1, sends signal by single-chip microcomputer 300, after boosting by driving circuit 400 and middle all inductance TX1, drives ultrasonic sensor.
The piezoelectric ceramics equivalent electrical circuit C200 of described ultrasonic sensor is connected with signal feedback 500 circuit, gathers the remained shock time by signal feedback 500 circuit, and Information Monitoring is fed back to single-chip microcomputer 300.
Described simulaed inductance 100 circuit comprise digital resistance R 5.
Described single-chip microcomputer 300 is adjusted the simulaed inductance value by adjusting digital resistance R 5.
The described remained shock time, described single-chip microcomputer 300 was adjusted described simulaed inductance value by adjusting described digital resistance R 5 when departing from the adjusted value of setting, made described inductance TX1 and described simulaed inductance 100 backs in parallel constitute the resonance coupling with piezoelectric ceramics equivalent capacity C200.
Comprise the first amplifier U1A, the second amplifier U1B in described simulaed inductance 100 circuit; The positive supply pin 8 of the first amplifier U1A, the second amplifier U1B connects+VDD, and negative supply pin 4 connects-VDD; The backward end pin 2 of the first amplifier U1A, the backward end pin 6 of the second amplifier U1B all are connected with capacitor C 2, the reverse input end of the first amplifier U1A meets reverse input resistance R3, output pin 1 is connected with the pin of end in the same way 5 of the second amplifier U1B by resistance R 4, the pin 5 of holding in the same way of the second amplifier U1B is connected with an end of digital resistance R 5 simultaneously, and the other end of digital resistance R 5 is connected with single-chip microcomputer 300; The output pin 7 of the second amplifier U1B is connected with the pin of end in the same way 3 of the first amplifier U1A through another resistance R 1.
The beneficial effect that the utility model reached: the utility model adopts the design concept realization remained shock of resonance coupling to adjust automatically; Adopt software to judge that whether the remained shock parameter is best, avoids artificial subjective factor to judge exist inconsistent; Behind the product encapsulating, can carry out the secondary adjustment to the product remained shock.The utility model can satisfy the customer demand that day by day increases, and market outlook are wide.
Description of drawings
Fig. 1 is the utility model radar for backing car sensor remained shock automatic circuit;
Fig. 2 is that circuit is adjusted in the remained shock of radar for backing car sensor in the prior art.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.Following examples only are used for the technical solution of the utility model more clearly is described, and can not limit protection domain of the present utility model with this.
As shown in Figure 1, the utility model circuit remained shock adjustment is adjusted remained shock by adjusting simulaed inductance 100, realizes adjusting automatically.
Comprise amplifier U1A, amplifier U1B, digital resistance R 5 in simulaed inductance 100 circuit.The positive supply pin 8 of amplifier U1A, amplifier U1B connects+VDD, and negative supply pin 4 connects-VDD; The backward end pin 2 of amplifier U1A, the backward end pin 6 of amplifier U1B all are connected with capacitor C 2, the reverse input resistance R3 of amplifier U1A, output pin 1 is connected with the pin of end in the same way 5 of amplifier U1B by R4, the pin 5 of holding in the same way of amplifier U1B is connected with an end of digital resistance R 5 simultaneously, and the other end of digital resistance R 5 is connected with single-chip microcomputer 300; The output pin 7 of amplifier U1B is connected with the pin of end in the same way 3 of amplifier U1A through resistance R 1.
Simulaed inductance formula: L=(R1R3R5/R4) C2
The pin of end in the same way 3 of amplifier U1A is connected with piezoelectric ceramics equivalent capacity C200 one end, piezoelectric ceramics equivalent capacity C200 other end ground connection.Signal feedback 500 circuit one end also is connected with piezoelectric ceramics equivalent capacity C200 one end simultaneously, and the signal feedback 500 circuit other ends connect single-chip microcomputer 300.Single-chip microcomputer 300 is connected with middle all inductance TX1 one ends by driving circuit 400, and middle all inductance TX1 other ends connect pin of end in the same way 3 and the piezoelectric ceramics equivalent capacity C200 of amplifier U1A respectively.
Single-chip microcomputer 300 sends the square wave of some, after boosting by driving circuit 400 and middle all inductance TX1, and drive pressure electroceramics equivalent capacity C200.Single-chip microcomputer 300 is gathered the piezoelectric ceramics equivalent capacity C200 remained shock time by signal feedback 500 circuit simultaneously.When the remained shock time was departed from the adjusted value of actual needs, single-chip microcomputer 300 was adjusted the simulaed inductance value by adjusting control figure resistance R 5, made inductance TX1 and simulaed inductance 100 backs in parallel constitute the resonance coupling with piezoelectric ceramics equivalent capacity C200.When actual remained shock value satisfies adjusted value, stop adjustment to digital resistance R 5, remained shock is adjusted automatically and is finished.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and distortion, these improvement and distortion also should be considered as protection domain of the present utility model.
Claims (6)
1. a radar for backing car sensor remained shock automatic circuit is characterized in that, the simulaed inductance that middle all inductance (TX1) are adjustable with the simulaed inductance value (100) constitutes the resonance match circuit with piezoelectric ceramics equivalent electrical circuit (C200) after circuit is in parallel.
2. according to the described radar for backing car sensor of claim 1 remained shock automatic circuit, it is characterized in that, single-chip microcomputer (300) is connected with driving circuit (400), described driving circuit (400) is connected with described inductance (TX1), send signal by described single-chip microcomputer (300), after boosting by described driving circuit (400) and described inductance (TX1), drive ultrasonic sensor.
3. according to the described radar for backing car sensor of claim 2 remained shock automatic circuit, it is characterized in that, the piezoelectric ceramics equivalent electrical circuit (C200) of described ultrasonic sensor is connected with signal feedback (500) circuit, gather the remained shock time by described signal feedback (500) circuit, and Information Monitoring is fed back to described single-chip microcomputer (300).
4. according to the described radar for backing car sensor of claim 3 remained shock automatic circuit, it is characterized in that described simulaed inductance (100) circuit comprises digital resistance (R5).
5. according to the described radar for backing car sensor of claim 4 remained shock automatic circuit, it is characterized in that described digital resistance (R5) is adjusted in described single-chip microcomputer (300) control.
6. according to the described radar for backing car sensor of claim 4 remained shock automatic circuit, it is characterized in that, comprise first amplifier (U1A), second amplifier (U1B) in described simulaed inductance (100) circuit; The positive supply pin (8) of first amplifier (U1A), second amplifier (U1B) connects+VDD, and negative supply pin (4) connects-VDD; The backward end pin (2) of first amplifier (U1A), the backward end pin (6) of second amplifier (U1B) all are connected with electric capacity (C2), the reverse input end of first amplifier (U1A) connects reverse input resistance (R3), output pin (1) is connected with the pin of end in the same way (5) of second amplifier (U1B) by resistance (R4), the pin of end in the same way (5) of second amplifier (U1B) is connected with an end of digital resistance (R5) simultaneously, and the other end of digital resistance (R5) is connected with single-chip microcomputer (300); The output pin (7) of second amplifier (U1B) is connected with the pin of end in the same way 3 of first amplifier (U1A) through another resistance (R1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200053138U CN201926759U (en) | 2011-01-10 | 2011-01-10 | Automatic adjustment circuit for residual vibration of car reversing radar sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200053138U CN201926759U (en) | 2011-01-10 | 2011-01-10 | Automatic adjustment circuit for residual vibration of car reversing radar sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201926759U true CN201926759U (en) | 2011-08-10 |
Family
ID=44430602
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200053138U Expired - Fee Related CN201926759U (en) | 2011-01-10 | 2011-01-10 | Automatic adjustment circuit for residual vibration of car reversing radar sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201926759U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135614A (en) * | 2011-01-10 | 2011-07-27 | 同致电子科技（昆山）有限公司 | Circuit for automatically adjusting aftershock of reverse radar sensor |
| CN103576135A (en) * | 2012-07-19 | 2014-02-12 | 现代摩比斯株式会社 | Device for detection of vehicle proximity obstacle and method thereof |
| CN108226908A (en) * | 2017-12-26 | 2018-06-29 | 清华大学苏州汽车研究院（吴江） | A kind of ultrasonic sensor remained shock and sensitivity test method and system |
| CN108362321A (en) * | 2017-12-26 | 2018-08-03 | 清华大学苏州汽车研究院（吴江） | A kind of ultrasonic sensor high-temperature testing method and system |
-
2011
- 2011-01-10 CN CN2011200053138U patent/CN201926759U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135614A (en) * | 2011-01-10 | 2011-07-27 | 同致电子科技（昆山）有限公司 | Circuit for automatically adjusting aftershock of reverse radar sensor |
| CN103576135A (en) * | 2012-07-19 | 2014-02-12 | 现代摩比斯株式会社 | Device for detection of vehicle proximity obstacle and method thereof |
| CN103576135B (en) * | 2012-07-19 | 2017-03-01 | 现代摩比斯株式会社 | For vehicle sensing close to obstacle device and its method |
| CN108226908A (en) * | 2017-12-26 | 2018-06-29 | 清华大学苏州汽车研究院（吴江） | A kind of ultrasonic sensor remained shock and sensitivity test method and system |
| CN108362321A (en) * | 2017-12-26 | 2018-08-03 | 清华大学苏州汽车研究院（吴江） | A kind of ultrasonic sensor high-temperature testing method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201926759U (en) | Automatic adjustment circuit for residual vibration of car reversing radar sensor | |
| CN201374695Y (en) | Embedded low-voltage power line carrier communication module | |
| WO2016127537A1 (en) | Back-end processing circuit, front-end processing circuit, and coaxial power supply circuit | |
| CN201314635Y (en) | Novel human body induction infrared stove controller | |
| CN102135614B (en) | Circuit for automatically adjusting aftershock of reverse radar sensor | |
| CN103647193A (en) | Anti-interference energy saving socket | |
| CN102488328A (en) | Automatic tow joint eliminating device of filter stick forming machine | |
| CN106198728B (en) | A kind of multichannel percussion detection device of adhesive bonding of composites structure | |
| CN202119911U (en) | Circuit for reducing ultrasonic range holes | |
| CN203573467U (en) | Harvester grain bin full-state alarm device | |
| CN202353658U (en) | Oscillograph video triggering device | |
| CN201946954U (en) | Toaster protective circuit | |
| US11318505B2 (en) | Medicine powder cleaning apparatus and medicine powder cleaning method | |
| CN201313232Y (en) | Automatic regulator for digital control plasma cutting gun | |
| CN211123726U (en) | Analog input acquisition circuit | |
| CN205827251U (en) | A kind of water level auto control system | |
| CN204129220U (en) | A kind of radar for backing car transless radiating circuit reduces remained shock circuit | |
| CN203444256U (en) | Signal processing circuit for intelligent product | |
| CN205905550U (en) | Ink -jet printing device | |
| CN206721968U (en) | A kind of small type hydraulic excavator fuel filling prompt system | |
| CN104578894B (en) | Window antinoise piezoelectric detection closed-loop control device | |
| CN111555673A (en) | Coin return device drive card, anti-dead-jamming coin return device and anti-coin-jamming control method | |
| CN103036208B (en) | A kind of highly reliable door and window lifting electromotor control device of low cost | |
| CN204334538U (en) | A kind of small area analysis high-end drive circuit | |
| CN221239084U (en) | Vehicle drive shaft detection circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20160110 |