CN2265319Y - Distance-measuring display device for car backing-up - Google Patents
Distance-measuring display device for car backing-up Download PDFInfo
- Publication number
- CN2265319Y CN2265319Y CN 96218581 CN96218581U CN2265319Y CN 2265319 Y CN2265319 Y CN 2265319Y CN 96218581 CN96218581 CN 96218581 CN 96218581 U CN96218581 U CN 96218581U CN 2265319 Y CN2265319 Y CN 2265319Y
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- CN
- China
- Prior art keywords
- ultrasonic probe
- car
- microprocessor
- distance
- automobile
- 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
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- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
The utility model relates to a distance measuring indicator for car backing, and the distance measuring indicator for the car backing connected to the power supply of a car back action comprises a host machine 1, an ultrasonic probe 2 and a buzzer 3 which are connected to the host machine 1. The utility model can accurately detect obstacles behind a car and can report the distance of the obstacles to a driver in definite distance range through different sounds, a sound-producing device is arranged in the car, and thus no noise pollution is arranged to the outside of the car.
Description
The utility model belongs to vehicle signal equipment, the indicating device of indication distance between car and obstruction during especially for reversing automobile.
Existing reversing crime prevention device mainly is to use verbal cue, as " reversing please notes ".Whether this warning just to a kind of warning of the people outside the automobile, can not have obstacle after the driver points out car, how many distances of obstacle and car is.Along with popularizing of automobile, the parking stall is more and more littler, when often reversing occurring, the automobile hit on obstruction or with other auto against.
The purpose of this utility model provides a kind of backing distance indicating device, when when reversing, automobile and car and obstruction have certain apart from the time, indication driver parking.
Principal feature of the present utility model is that the reversing range finding indicating device that is connected on the automotive reverse gear power supply comprises main frame 1, is connected ultrasonic probe 2, buzzer phone 3 on the main frame 1.
The obstacle of the utility model after to car can detect exactly, and in certain distance by different sound equipments, to the distance of Pilot Report's obstacle, and sound-producing device is in car, to automobile outside noise-less pollution.
Fig. 1 is a system schematic.
1 is that main frame 2 is luminous indicating lamp for ultrasonic probe 3 for buzzer phone 4 among the figure
Fig. 2 is the electrical schematic diagram of main frame 1.
Fig. 3 is sonde configuration figure
2 is that ultrasonic probe 5 is housing for rubber ring 6 among the figure
Below in conjunction with accompanying drawing in detail the utility model is described in detail
During the chaufeur reversing, generally with the distance between back mirror and experience measurement car and the obstacle, if car and obstruction less or require between car and the obstacle distance hour, in when, then often reversing taking place, car knocks the car and obstruction situation, according to traffic department statistics, annual loss of thrusting into, hitting thing during because of reversing is just very big.The utility model has very well solved this problem.At first ultrasonic probe is installed in the rear portion of car, during reversing automobile, the probe measurement car and obstruction is in case when the distance between car and the obstacle was 1 meter to 0.7 meter scope, buzzer phone sent a kind of sound in the car, informs chaufeur.When distance is 0.7 meter to 0.4 meter, send another kind of sound, in the time of 0.4 meter to 0.2 meter, send a kind of sound again, three kinds of different sound are represented three kinds of different distances.Certainly can adjust as 1.5 meters-1.2 meters, 1.2 meters-0.8 meter, 0.8 meter-0.5 meter according to different requirement indication distances.Because the ultrasonic level finding range is limited,, need the ultrasonic probe more than 1 for the car body of broad.2 or 3 probes can be installed as required behind car.For reducing the interference of ground return, the shell of ultrasonic probe is made ovalisation, and its vertical direction is little, horizontal direction is big, like this ultrasound beamformer is pressed little and made horizontal direction become big in vertical direction, promptly reduce the influence of ground clutter reflection, strengthened the finding range of horizontal direction again.To the influence of ultrasonic probe, ultrasonic probe 2 times, a yielding rubber packing ring 5 is arranged in the body skin 6 when preventing automobile vibration, driver's observation can connect an indicator lamp 4 on microprocessor for convenience, also can connect a digital display again.
Electric principle is described below
When the driver connects automobile power source, and when entering reverse, the annunciator energized is started working.
At first, tens cycles take place in microprocessor (model C OP8782), and the square-wave signal of 40KHz becomes sinusoidal waveform to square wave through shaping circuit, after through amplifying circuit signal power being amplified, deliver to ultrasonic transducer (probe) and launch.Microprocessor enters receiving condition then, at first, controls the electronic switch door by microprocessor CPU, is become by the state of opening and closes, and acceptor circuit is connected.After super sonic runs into obstacle and is reflected, receive by ultrasonic transducer, and ultrasonic signal is transformed into electric signal, after entering first order amplifying circuit (analogous circuit) weak signal being amplified through the electronic switch door, enter bandpass filter and remove low-frequency interference signal and high-frequency interferencing signal, the 40KHz signal that leaches at last is exactly real reflected signal, after arriving second stage amplifying circuit (model M5218) then and amplifying, delivers to comparison amplifying circuit (model LM358).Make the comparison amplifying circuit produce the actv. signal by the microprocessor control ratio than amplifying circuit, microprocessor receives useful signal again, calculate from being transmitted into the time gap between the received signal through microprocessor, thereby calculate obstacle to the distance between the automobile.When obstacle was within alarm distance, microprocessor was sent control signal, made power amplification circuit produce signal, drove loudspeaker and sent corresponding alarm sound.Simultaneously, control corresponding luminous indicating lamp by microprocessor and light, with the indication driver.
If because the automobile width is bigger, can increases as required in the time of need widening detection width and transmit and receive circuit.When circuit becomes several roads and transmits and receives by 1 the tunnel, compare and calculate by microprocessor, only nearest a road the sending corresponding signal and report to the police of obstacle distance automobile to alarming horn.Yet as long as obstacle is arranged at it separately in the alarm distance scope of warning circuit, the warning indicator lamp LED lamp on each road is just lighted.For example when the two-way circuit all detects obstacle, no matter whether the distance of obstacle is identical.The indicator lamp of two-way is all lighted, in two alarm regions of indication driver obstacle to be arranged all.And the sound of reporting to the police is with nearest being as the criterion.
Claims (4)
1. reversing automobile range finding indicating device, comprise main frame 1 ultrasonic probe 2, described main frame comprises microprocessor, amplifying circuit, shaping circuit, bandpass filter etc., it is characterized in that: the mouth of the microprocessor in the main frame is by shaping circuit, and amplifying circuit is connected with ultrasonic probe, for ultrasonic probe provides working signal, ultrasonic probe passes through amplifying circuit again simultaneously, electronic switch, bandpass filter, relatively amplifying circuit is connected with the input end of microprocessor, and the signal of ultrasonic probe reception through amplifying, is input to microprocessor after the filtering, microprocessor also is connected with buzzer phone by power amplification circuit, drives buzzer phone work.
2. automobile range finding indicating device according to claim 1 is characterized in that described ultrasonic probe is at least one.
3. automobile range finding indicating device according to claim 1 is characterized in that also being connected on the described microprocessor luminous indicating lamp.
4. automobile according to claim 1 range finding indicating device is characterized in that in the housing 6 of described ultrasonic probe 2 rubber cradle 5 being arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96218581 CN2265319Y (en) | 1996-08-28 | 1996-08-28 | Distance-measuring display device for car backing-up |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96218581 CN2265319Y (en) | 1996-08-28 | 1996-08-28 | Distance-measuring display device for car backing-up |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2265319Y true CN2265319Y (en) | 1997-10-22 |
Family
ID=33899400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96218581 Expired - Fee Related CN2265319Y (en) | 1996-08-28 | 1996-08-28 | Distance-measuring display device for car backing-up |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2265319Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464548A (en) * | 2017-08-03 | 2017-12-12 | 京东方科技集团股份有限公司 | Contactless music sensing device and musical performance method |
| CN109426267A (en) * | 2017-08-30 | 2019-03-05 | 苏州宝时得电动工具有限公司 | From mobile device |
-
1996
- 1996-08-28 CN CN 96218581 patent/CN2265319Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464548A (en) * | 2017-08-03 | 2017-12-12 | 京东方科技集团股份有限公司 | Contactless music sensing device and musical performance method |
| CN109426267A (en) * | 2017-08-30 | 2019-03-05 | 苏州宝时得电动工具有限公司 | From mobile device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |