CN202320086U - Reverse anti-collision system based on singlechip - Google Patents
Reverse anti-collision system based on singlechip Download PDFInfo
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- CN202320086U CN202320086U CN2011204911994U CN201120491199U CN202320086U CN 202320086 U CN202320086 U CN 202320086U CN 2011204911994 U CN2011204911994 U CN 2011204911994U CN 201120491199 U CN201120491199 U CN 201120491199U CN 202320086 U CN202320086 U CN 202320086U
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Abstract
A reverse anti-collision system based on a singlechip mainly solves the problems of high cost and simplex function of the conventional reverse sensor, and is characterized by further comprising an ultrasonic transmitting circuit, an ultrasonic receiving circuit , an LCD (liquid crystal display), a scanning drive circuit and an alarm circuit, wherein the signal input end of the ultrasonic transmitting circuit is connected to the signal transmission control output end of the singlechip; the signal output end of the ultrasonic receiving circuit is connected to the signal receiving control input end of the singlechip; and the singlechip outputs control signals to the LCD, the scanning drive circuit and the alarm circuit through corresponding ports respectively. The reverse anti-collision system has the advantages that the production cost is low; the test blind area is eliminated; and the distance between a vehicle and an obstacle is measurable.
Description
Technical field
The utility model relates to a kind of control setup that is used for the safety traffic field.Specifically, relate to a kind of control setup that bumps when preventing to move backward on the power actuated vehicle that is installed on.
Background technology
At present, being installed on backing system on the automobile has multiplely, shows that dynamically screen display begins to occur dynamic display system but all be essentially the liquid crystal fluorescent screen.In this system, need not hang reverse gear, need only start a car, the distance of automobile pattern and vehicle periphery obstacle will appear on the telltale, and color is clear beautiful, and is specious, installs easily.But the shortcoming that this backing system exists is that productive costs is high, several thousand yuan easily, but also have the blind area, and function singleness, and antijamming capability is not strong, reports by mistake more yet.
Summary of the invention
In order to solve the prior art problem that provides in the background technology; The utility model provides a kind of SCM Based reversing collision avoidance system; The electronic component that this kind reversing collision avoidance system is selected for use is cheap, so purchase cost is low, and has the advantages that response time is short, highly sensitive, do not have the test blind area; Can also work out the program in the micro controller system, its function is fully developed.
The technical scheme of the utility model is: the SCM Based reversing collision avoidance system of this kind; Comprise micro controller system, it is characterized in that: said system also comprises a ultrasonic transmit circuit, a super sonic acceptor circuit, a LCD display, a scan drive circuit and a warning circuit; Wherein, the signal input part of said ultrasonic transmit circuit is connected to the control output end that transmits of said micro controller system, and the signal output part of said super sonic acceptor circuit is connected to the reception signal control input end of said micro controller system; Said micro controller system is exported control signal to said LCD display, scan drive circuit and warning circuit respectively through corresponding port.
Optimizing embodiment is that said micro controller system is selected the AT89C51 controller for use; Said ultrasonic transmit circuit adopts TCT40-16T type ultrasound transmitting transducer.
The utlity model has following beneficial effect: this kind reversing collision avoidance system is made up of AT89C51 controller, ultrasonic transmit circuit, acceptor circuit, audible alarm circuit and LCD display circuit.When reversing, transmit and receive circuit working, through the AT89C51 data handing with the tailstock apart from the distance indication of obstacle at LCD, if distance during less than default value, the warning circuit early warning that can pipe reminds the driver to note spacing.Wherein AT89C51 is a main control chip; Support online downloading; Convenient debugging; The Flash of 8kB, 32 I/O mouths, three 16 bit timings/counting machines, eight interrupt sources, full duplex UART serial port and WatchDog Timers etc. are arranged, both satisfied the designing requirement of native system, also satisfied the demand of expansion in the future.The electronic component that this kind reversing collision avoidance system is selected for use is cheap, so purchase cost is low, and has the advantages that response time is short, highly sensitive, do not have the test blind area, can also work out the program in the micro controller system, and its function is fully developed.
Description of drawings:
Fig. 1 is the system hardware circuit diagram of the utility model.
Fig. 2 is the composition structural representation of the utility model.
Fig. 3 is the electrical schematic diagram of ultrasonic transmit circuit in the utility model.
Fig. 4 is the electrical schematic diagram of super sonic acceptor circuit in the utility model.
Fig. 5 is the electrical schematic diagram of warning circuit in the utility model.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
By shown in Figure 2; The SCM Based reversing collision avoidance system of this kind; Comprise micro controller system, it is characterized in that: said system also comprises a ultrasonic transmit circuit, a super sonic acceptor circuit, a LCD display, a scan drive circuit and a warning circuit; Wherein, the signal input part of said ultrasonic transmit circuit is connected to the control output end that transmits of said micro controller system, and the signal output part of said super sonic acceptor circuit is connected to the reception signal control input end of said micro controller system; Said micro controller system is exported control signal to said LCD display, scan drive circuit and warning circuit respectively through corresponding port.
Fig. 1 is the system hardware circuit diagram of the utility model; Wherein AT89C51 is a main control chip; Support online downloading, convenient debugging has the Flash of 8kB, 32 I/O mouths, three 16 bit timings/counting machines, eight interrupt sources, full duplex UART serial port and WatchDog Timers etc.; Both satisfy the designing requirement of native system, also satisfied the demand of expansion in the future.Present embodiment adopts the AT89C51 micro controller system, and the P1.0 port connects ultrasonic transmit circuit.What the P1.0 pin was exported will be the 40kHz square wave that software mode produces, and P3.2 (INT0) then is used to receive echo.The P2.0 pin connects buzzer circuit, and P2.4 connects 4 LED charactrons to P2.7.The light-emitting diode of indicating circuit will be lighted after system's energising, and indicating system is in normal working.9 pins of micro controller system connect reset circuit, when mistake appears in system, when endless loop appears in program, press the reset button circuit and can restart normal operation.Said micro controller system is selected the AT89C51 controller for use; Said ultrasonic transmit circuit adopts TCT40-16T type ultrasound transmitting transducer.
Fig. 3 is the electrical schematic diagram of ultrasonic transmit circuit in the utility model, and ultrasonic emitting partly is in order to let ultrasound transmitting transducer TCT40-16T send the square-wave pulse signal about 40kHz to the external world.The generation of the square-wave pulse signal about 40 kHz has two kinds of methods usually: adopt hardware as being produced by 555 vibrations or software such as scm software programming output, native system adopts the latter.Programming is exported the square-wave pulse signal about 40 kHz by micro controller system P1.0 port; Because the one-chip machine port horsepower output is not enough; 40 kHz square-wave pulse signals are divided into two-way; Give a push-pull circuit of forming by 74HC04 and carry out power gain, satisfy the measuring distance requirement, give super sonic transmission transducer TCT40-16T at last and be transmitted in the air with the sound wave form so that make transmitting range enough far away.The circuit of radiating portion shown in Fig. 3-3, mouth pull-up resistor R31 among the figure, R32 can improve on the one hand the power-handling capability of reverser 74HC04 output high level, can increase the damping of ultrasonic transducer on the other hand.
Fig. 4 is the electrical schematic diagram of super sonic acceptor circuit in the utility model.TCT40-16T emission hypracoustic is propagated in air; Running into obstacle will return; The super sonic receiving unit is to change and become electric signal in order backward wave (echo) to be received smoothly super sonic receiving transducer TCT40-16R, and to this electric signal amplify, after filtering, shaping etc. handle, the integrated chip CX20106 that produces with Sony here; Obtain a negative going pulse and give P3.2 (INT0) pin of micro controller system, to produce an interruption.The circuit of receiving unit can see that shown in Fig. 2-4 integrated chip CX20106 plays a significantly greater role in the receiving unit circuit.CX20106 is the special chip that a widely used infrared ray detection receives, and it has, and function is strong, superior performance, periphery.Interface is simple, low cost and other advantages; Because the carrier frequency 38kHz that infrared remote control is commonly used and the ultrasonic frequency 40kHz of range finding are more approaching; And the filter center frequency f 0 five of CX20106 set inside can be regulated by its 5 pin outer meeting resistance; The big more central frequency of resistance is low more, and scope is 30～60kHz, so this design is made acceptor circuit with it.CX20106 inside is made up of preamplifier, clipping amplifier, bandpass filter, detecter, integrator and shaping circuit.Working process is following: the echoed signal of reception is earlier through preamplifier and clipping amplifier, and signal is adjusted to the rectangular pulse of suitable amplitude, carries out frequency by filter and selects, and filtering interference signals again through shaping, gives mouth 7 pin.When receiving the echoed signal that conforms to CX20106 filter center frequency, its mouth 7 pin are with regard to output low level, and mouth 7 pin are directly received on the INT0 pin of AT89S52, interrupt to trigger.If frequency has some errors, the outer meeting resistance R42 of scalable chip pin 5 is arranged on 40 kHz with the central frequency of filter, just can reach ideal effect.
The part of reporting to the police mainly utilizes buzzer phone to report to the police.When the signal of certain frequency is imported, at first signal is amplified through aerotron, reach buzzer warning then, the circuit diagram of the part of reporting to the police is as shown in Figure 5.
Claims (2)
1. a SCM Based reversing collision avoidance system comprises micro controller system, it is characterized in that: said system also comprises a ultrasonic transmit circuit, a super sonic acceptor circuit, a LCD display, a scan drive circuit and a warning circuit; Wherein, the signal input part of said ultrasonic transmit circuit is connected to the control output end that transmits of said micro controller system, and the signal output part of said super sonic acceptor circuit is connected to the reception signal control input end of said micro controller system; Said micro controller system is exported control signal to said LCD display, scan drive circuit and warning circuit respectively through corresponding port.
2. SCM Based reversing collision avoidance system according to claim 1, it is characterized in that: said micro controller system is selected the AT89C51 controller for use; Said ultrasonic transmit circuit adopts TCT40-16T type ultrasound transmitting transducer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204911994U CN202320086U (en) | 2011-12-01 | 2011-12-01 | Reverse anti-collision system based on singlechip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204911994U CN202320086U (en) | 2011-12-01 | 2011-12-01 | Reverse anti-collision system based on singlechip |
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| CN202320086U true CN202320086U (en) | 2012-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011204911994U Expired - Fee Related CN202320086U (en) | 2011-12-01 | 2011-12-01 | Reverse anti-collision system based on singlechip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290765A (en) * | 2012-12-17 | 2013-09-11 | 天津思博科科技发展有限公司 | Automatic ultrasonic detection device for travelling surface gathered water |
| CN104071583A (en) * | 2014-06-24 | 2014-10-01 | 大唐桂冠合山发电有限公司 | Anti-collision device for bucket wheel driving platform of bucket wheel machine |
-
2011
- 2011-12-01 CN CN2011204911994U patent/CN202320086U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103290765A (en) * | 2012-12-17 | 2013-09-11 | 天津思博科科技发展有限公司 | Automatic ultrasonic detection device for travelling surface gathered water |
| CN104071583A (en) * | 2014-06-24 | 2014-10-01 | 大唐桂冠合山发电有限公司 | Anti-collision device for bucket wheel driving platform of bucket wheel machine |
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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: 20120711 Termination date: 20141201 |
|
| EXPY | Termination of patent right or utility model |