CN207089127U - Automobile collision preventing warning circuit based on ultrasonic ranging - Google Patents
Automobile collision preventing warning circuit based on ultrasonic ranging Download PDFInfo
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- CN207089127U CN207089127U CN201720782159.2U CN201720782159U CN207089127U CN 207089127 U CN207089127 U CN 207089127U CN 201720782159 U CN201720782159 U CN 201720782159U CN 207089127 U CN207089127 U CN 207089127U
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- ultrasonic wave
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- automobile collision
- ultrasonic
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- 230000010354 integration Effects 0.000 claims abstract description 4
- 239000004973 liquid crystal related substance Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 4
- 230000003321 amplification Effects 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000002604 ultrasonography Methods 0.000 abstract description 3
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses a kind of automobile collision preventing warning circuit based on ultrasonic ranging, including ultrasonic distance measuring module, LCD MODULE, voice broadcast module and buzzer warning module, each circuit module is by single-chip microcomputer master control module controls；Single-chip microcomputer main control module is made up of STC89C52, reset circuit and clock circuit；Ultrasonic distance measuring module includes ultrasonic wave transmitting circuit module and ultrasonic wave receiving circuit module；Ultrasonic wave transmitting circuit module uses HC SR04 integration modules, is made up of Em78p153 single-chip microcomputers, single supply electrical level transferring chip MAX232 and ultrasound transmitting transducer T40；Ultrasonic wave receiving circuit module is made up of four road low noise JFET inputs general-purpose operation amplifier TL074 and ultrasonic wave receive transducer R40；The utility model small volume, low in energy consumption, high sensitivity, the accuracy of measurement are high；Alarm distance can be set, the voice broadcast of real-time can be carried out, to ensure that driver takes brake measure, the generation of collision free accident in time.
Description
Technical field
Vehicle driving safe practice is the utility model is related to, more particularly to a kind of automobile based on ultrasonic measuring distance technology is prevented
Hit warning circuit.
Background technology
Be inevitably present reversing blind area in the driving environments such as street, parking lot, cell garage, driver for
The distance between vehicle position and barrier can not correctly judge, be easy for causing collision accident in the case, so as to
The personal safety of driver and vehicle-mounted passenger will be by serious threats.It would therefore be highly desirable to solve the above problems.
Utility model content
Purpose of utility model：To solve the problems, such as that prior art is present, the purpose of this utility model is to provide one kind and passed through
Ultrasonic ranging principle and intelligent alarm circuit realize the automobile collision preventing warning circuit of automotive safety ranging and alarm.
Technical scheme：A kind of automobile collision preventing warning circuit based on ultrasonic ranging, it is characterised in that：Including ultrasound
Away from module, LCD MODULE, voice broadcast module and buzzer warning module, above-mentioned each circuit module is by single-chip microcomputer master control mould
Block controls；Wherein, the single-chip microcomputer main control module is made up of STC89C52 control chips, reset circuit and clock circuit；It is described
Ultrasonic distance measuring module includes ultrasonic wave transmitting circuit module and ultrasonic wave receiving circuit module；The ultrasonic wave transmitting circuit mould
Block uses HC-SR04 integration modules, is changed by the transmitting of Em78p153 single-chip microcomputers, single supply electrical level transferring chip MAX232 and ultrasonic wave
Can device T40 compositions；The ultrasonic wave receiving circuit module is inputted general-purpose operation amplifier TL074 by four road low noise JFET and surpassed
Acoustic receiver transducer R40 is formed；P3.3 of the P50 mouths of the Em78p153 as signal transmitting terminal Trig connections STC89C52
Mouthful, the P3.2 mouths of Em78p153 P67 mouths as signal receiving end Echo connections STC89C52.
Preferably, the LCD MODULE uses LCD1602 liquid crystal, and the D0-D7 8 of the LCD1602 liquid crystal is two-way
The P0-P7 mouths of data terminal and the STC89C52 control chips, which are sequentially connected, realizes data transfer.
The pin 4 of the LCD1602 liquid crystal connects the resistance that a resistance is 2K Ω.
The voice broadcast module uses WT588D speech chips, and the way of output uses PWM mode；The WT588D voices
Chip connects a loudspeaker.
The buzzer warning module uses active buzzer, and the long pin of the active buzzer connects positive pole, short pin ground connection；
The emitter stage of a PNP type triode 9012 is separately connect into power supply, colelctor electrode connects buzzer and connects 2K Ω resistance to STC89C52 to ground, base stage
The P1.4 mouths of control chip, to ensure when I/O mouths export low level, triode saturation conduction, buzzer work.The PNP
Supply voltage value used in type triode, not higher than microcontroller power supply magnitude of voltage, to ensure when I/O mouths export high level, three
Pole pipe can end.
The warning circuit also includes being used for the key control module for setting alarm distance.
Beneficial effect：Compared with prior art, small product size of the present utility model is small, low in energy consumption, high sensitivity, measurement
Accuracy is high, while can set alarm distance, the voice broadcast of real-time can be carried out in addition, to ensure that driver takes in time
Brake measure, the generation of collision free accident.
Brief description of the drawings
Fig. 1 is integrated circuit structure chart of the present utility model；
Fig. 2 is the circuit structure diagram of the utility model ultrasonic distance measuring module；
Fig. 3 is the circuit structure diagram of the utility model LCD MODULE；
Fig. 4 is the circuit structure diagram of the utility model voice broadcast module；
Fig. 5 is the circuit structure diagram of the utility model buzzer warning module；
Fig. 6 is the circuit structure diagram of the utility model key control module.
Embodiment
The technical solution of the utility model is described further below in conjunction with the accompanying drawings.It should be understood that the present embodiment is only used for
The bright present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are to the present invention's
The modification of the various equivalent form of values falls within the application appended claims limited range.
As shown in figure 1, a kind of automobile collision preventing warning circuit based on ultrasonic ranging, including ultrasonic distance measuring module 1, liquid
Brilliant display module 2, voice broadcast module 3 and buzzer warning module 4, above-mentioned each module are controlled by single-chip microcomputer main control module 5；It is excellent
Choosing, the warning circuit is additionally provided with the key control module 6 for setting alarm distance；Wherein, the single-chip microcomputer master control mould
Block 5 is mainly made up of STC89C52 control chips, reset circuit, clock circuit, and STC89C52 is a kind of low of STC Corporation's production
Power consumption, the 8-digit microcontroller of high-performance CMOS 8, there is 8K byte systems may be programmed flash storage.
The complete circuit figure of ultrasonic distance measuring module is illustrated in figure 2, the circuit includes ultrasonic wave transmitting circuit mould
Block and ultrasonic wave receiving circuit module；Wherein, ultrasonic wave transmitting circuit module uses HC-SR04 integration modules, mainly by
Em78p153 single-chip microcomputers, single supply electrical level transferring chip MAX232 and ultrasound transmitting transducer T40 compositions；Em78p153 monolithics
Machine provides the high level signal that a pulse width is 10 μ s, and then ultrasonic wave transmitting circuit inside modules send 8 frequencies automatically
Rate is 40kHz square wave, and signal is sent STC89C52 P3.3 mouths, Echo termination P3.2 mouths, waits high level output by Trig ends；
5V signals are converted into 20V by MAX232, it is therefore an objective to which the signal level for providing Em78p153 single-chip microcomputers meets RS-232 standard；
Acoustical signal transmitting ultrasonic wave is finally converted electrical signals to by T40.Ultrasonic wave receiving circuit module is mainly by four road low noises
JFET inputs general-purpose operation amplifier TL074 and ultrasonic wave receive transducer R40 compositions；When R40 detects that audible signal returns to
During receiving terminal, Echo ends are changed into low level from high level after acoustic-electric is changed.
As shown in figure 3, liquid crystal display circuit module 3 uses LCD1602 liquid crystal, after ranging success, LCD1602 is as number
According to output energization work；The first row display distance of display screen, second row show set alarm distance.Often 16 words of row
Symbol, display image quality are high.Its connection circuit between single-chip microcomputer is simple, only need to be by D0-D7 8 bi-directional data ends and single-chip microcomputer
P0-P7 mouths be sequentially connected i.e. can be achieved data transfer.Pin 4 (i.e. VO ends) is liquid crystal display setting contrast end, can
To adjust the contrast of display, contrast is most weak when connecing positive supply, contrast highest during earthing power supply, meeting when contrast is too high
Produce " ghost ", therefore a 2K Ω resistance can be connected during use to adjust contrast, to display provide one it is suitable
Gray scale；
As long as Enable Pin (E) is low level by high level saltus step, LCD1602 starts work.
As shown in figure 4, voice broadcast circuit module 4 uses WT588D speech chips, after ranging success, MCU driving
WT588D voice broadcast modules work, and way of output selection PWM mode, real-time range are reported by loudspeaker.Wherein WT588D
3 jiaos of device are directly connected with loudspeaker positive pole, and 4 jiaos are directly connected with loudspeaker negative pole.
As shown in figure 5, buzzer alarm circuit module 5 uses active buzzer, vibration electricity is provided with inside active buzzer
Road, oscillating circuit can change into constant dc the pulse signal of fixed frequency, and then make internal magnetic field that alternation occur, and promote
Vibrate molybdenum sheet, buzzer is started working.The long pin of buzzer connects positive pole, short pin ground connection, separately by a PNP type triode 9012
Emitter stage connects power supply, and colelctor electrode connects buzzer to ground, and base stage connects 2K Ω resistance to the P1.4 mouths of STC89C52 control chips, to protect
Card is when I/O mouths export low level, triode saturation conduction, buzzer work.Supply voltage used in the PNP type triode
Value, not higher than microcontroller power supply magnitude of voltage, to ensure that triode can end when I/O mouths export high level.
The circuit structure diagram of key control module is illustrated in figure 6, the effect of S4 buttons is to set alarm distance, presses, enters
Enter to set alarm distance interface, then click return normal interface, alarm distance is set successfully.S2 is " subtracting " button, is being set
After alarm distance interface is pressed next time, set alarm distance reduces 1cm, and S3 is " adding " button, is pressed setting alarm distance interface
After next time, set alarm distance increases 1cm.
The present embodiment use+5V voltages are powered to circuit, carry out embodiment by taking reversing automobile collision-proof alarm as an example below
Explanation：
(1) tailstock is more than in the case of setting alarm distance with obstacle distance and tested：After connecting working power, buzzer is not
Work, i.e., do not alarm, LCDs shows real-time measurement distance, and voice broadcast module normally reports real-time range.
It is assumed that setting alarm distance as 3m, LCD MODULE shows that real-time measurement distance is 3.5m, then alarm does not occur, voice is broadcast
Report " 3.5m ".
(2) tailstock is less than in the case of setting alarm distance with obstacle distance and tested：After connecting working power, buzzer is opened
Beginning work, the alarm of " ticking " is sent, LCDs shows real-time measurement distance, and voice broadcast module is normally reported
Real-time range.It is assumed that setting alarm distance as 3m, LCD MODULE shows that real-time measurement distance is 2.5m, then alarms
Sound, voice broadcast " 2.5m ".
(3) tailstock is tested with obstacle distance in the case of setting alarm distance：After connecting working power, buzzer is not
Work, i.e., do not alarmed, and LCDs is shown " 8.88 ", and voice broadcast module reports " no to scale ".It is assumed that setting
Alarm distance is 3m, and LCD MODULE shows that real-time measurement distance is 6m (being more than the farthest measurement distance 5m of the design), then not
Generation alarm, voice broadcast " no to scale ".
Claims (7)
- A kind of 1. automobile collision preventing warning circuit based on ultrasonic ranging, it is characterised in that：Including ultrasonic distance measuring module (1), LCD MODULE (2), voice broadcast module (3) and buzzer warning module (4), above-mentioned each circuit module is by single-chip microcomputer master control Module (5) controls；Wherein, the single-chip microcomputer main control module (5) is by STC89C52 control chips, reset circuit and clock circuit group Into；The ultrasonic distance measuring module (1) includes ultrasonic wave transmitting circuit module and ultrasonic wave receiving circuit module；The ultrasonic wave Radiating circuit module uses HC-SR04 integration modules, by Em78p153 single-chip microcomputers, single supply electrical level transferring chip MAX232 and surpasses Soic wave transmitting energy converter T40 is formed；The ultrasonic wave receiving circuit module is by four road low noise JFET input general-purpose operation amplifications Device TL074 and ultrasonic wave receive transducer R40 compositions；The P50 mouths of the Em78p153 are as the Trig connections of signal transmitting terminal STC89C52 P3.3 mouths, the P3.2 mouths of Em78p153 P67 mouths as signal receiving end Echo connections STC89C52.
- 2. automobile collision preventing warning circuit according to claim 1, it is characterised in that：The LCD MODULE (2) uses LCD1602 liquid crystal, 8 bi-directional data ends of D0-D7 of the LCD1602 liquid crystal and the P0-P7 of the STC89C52 control chips Mouth, which is sequentially connected, realizes data transfer.
- 3. automobile collision preventing warning circuit according to claim 2, it is characterised in that：The pin 4 of the LCD1602 liquid crystal connects One resistance is 2K Ω resistance.
- 4. automobile collision preventing warning circuit according to claim 1, it is characterised in that：The voice broadcast module (3) uses WT588D speech chips, the way of output use PWM mode.
- 5. automobile collision preventing warning circuit according to claim 4, it is characterised in that：The WT588D speech chips connection one Loudspeaker.
- 6. automobile collision preventing warning circuit according to claim 1, it is characterised in that：The buzzer warning module (4) is adopted With active buzzer, the long pin of the active buzzer connects positive pole, short pin ground connection；Separately by the emitter stage of a PNP type triode 9012 Power supply is connect, colelctor electrode connects buzzer and connects 2K Ω resistance to the P1.4 mouths of STC89C52 control chips, the positive-negative-positive to ground, base stage Supply voltage value used in triode, not higher than microcontroller power supply magnitude of voltage.
- 7. automobile collision preventing warning circuit according to claim 1, it is characterised in that：The warning circuit also includes being used to set Determine the key control module (6) of alarm distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720782159.2U CN207089127U (en) | 2017-06-30 | 2017-06-30 | Automobile collision preventing warning circuit based on ultrasonic ranging |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720782159.2U CN207089127U (en) | 2017-06-30 | 2017-06-30 | Automobile collision preventing warning circuit based on ultrasonic ranging |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207089127U true CN207089127U (en) | 2018-03-13 |
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ID=61555169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720782159.2U Expired - Fee Related CN207089127U (en) | 2017-06-30 | 2017-06-30 | Automobile collision preventing warning circuit based on ultrasonic ranging |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207089127U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983244A (en) * | 2018-09-30 | 2018-12-11 | 深圳市陀罗尼教育科技有限公司 | A kind of Ultrasonic Range Finder for Parking auxiliary system |
| CN114261354A (en) * | 2021-12-24 | 2022-04-01 | 南京英锐创电子科技有限公司 | Low-frequency clock circuit and control method |
-
2017
- 2017-06-30 CN CN201720782159.2U patent/CN207089127U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108983244A (en) * | 2018-09-30 | 2018-12-11 | 深圳市陀罗尼教育科技有限公司 | A kind of Ultrasonic Range Finder for Parking auxiliary system |
| CN114261354A (en) * | 2021-12-24 | 2022-04-01 | 南京英锐创电子科技有限公司 | Low-frequency clock circuit and control method |
| CN114261354B (en) * | 2021-12-24 | 2023-07-04 | 南京英锐创电子科技有限公司 | Low frequency clock circuit and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: NANJING TAIHUILIAN ELECTRONIC TECHNOLOGY Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2021980015451 Denomination of utility model: Automobile anti-collision alarm circuit based on ultrasonic ranging Granted publication date: 20180313 License type: Common License Record date: 20211222 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220920 Address after: South side of North Fourth Road, Science and Technology Pioneer Park, Hongze County Economic Development Zone, Huaian City, Jiangsu Province, 223001 Patentee after: HONGZE HENGXIN AUTOMOTIVE NEW MATERIALS Co.,Ltd. Address before: 223005 No.1, Meicheng East Road, Huaian Economic Development Zone, Jiangsu Province Patentee before: HUAIYIN INSTITUTE OF TECHNOLOGY |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180313 |