CN2700180Y

CN2700180Y - Vehicle back distance-measurement monitor

Info

Publication number: CN2700180Y
Application number: CN 200320122585
Authority: CN
Inventors: 姚薇
Original assignee: YAOWEI INDUSTRY Co Ltd SHANGHAI
Current assignee: YAOWEI INDUSTRY Co Ltd SHANGHAI
Priority date: 2003-12-18
Filing date: 2003-12-18
Publication date: 2005-05-18
Anticipated expiration: 2013-12-18

Abstract

A row of a plurality of ultrasonic ranging probes are arranged on a rear bumper at the tail of the automobile in the utility model; the automobile is also equipped with a rear view camera shooting probe; the distance finding signal outputted from the ultrasonic ranging probes and the video signal of the scene behind automobile outputted from the camera shooting probe are simultaneously inputted into a display controller; the display controller make the data signal of the ultrasonic ranging probes generate characters, selects the minimum distance figure, superposes the characters on the video signal, and then conveys the characters to a monitor in a driving room; the monitor simultaneously displays the minimum distance figures of the scene behind the automobile and the distance between the automobile and the scene, if the distance is smaller than the set number value, the display controller can send out the alarm bell. The advantage is that the utility model can be arranged on any vehicle for reverse running, when the reverse running is carried out, the driver does not need to open the vehicle door, and can see the scene behind the vehicle clearly from the monitor to assure the safety and the reliability of the reverse running.

Description

Reversing range finding monitoring device

Technical field

The utility model relates to a kind of range finding monitoring device that is used for object distance behind the inspection vehicle, monitors reversing automobile safety.

Background technology

At present, along with the develop rapidly of society, being on the increase of transportation and communication, flow must strengthen, and reversing is looked at each other before and after being difficult to, particularly Dao Che background complexity.Very big by side mirror side-looking background limitation at present, low visibility, the lorry of particularly large-scale collection entrucking or overlength superelevation, be difficult to from side mirror, observe background during reversing, cause the generation of frequent accidents, and the use of language reversing bulletin device also can only be informed the people with language ability, and people are difficult to hear prompting sound again in the big environment of noise, so can not know the fixed obstacle behind the car, very easily cause the accident.

Summary of the invention

For addressing the above problem, the purpose of this utility model provides a kind of reversing range finding monitoring device; Its technical scheme is, on automobile tail rear bumper, adorn several ultrasonic ranging probes of a row, the backsight camera probe also is housed on the automobile, scenery vision signal behind the distance measuring signal of ultrasonic ranging probe output and the car of backsight camera probe output, import display control switch simultaneously, display control switch is with the data-signal of ultrasonic ranging, after generating character, select minimum distance numeral, be superimposed upon on the vision signal, be transported to the monitoring device in the operator's compartment, monitoring device shows the minor increment numeral of scenery and automobile and scenery behind the car simultaneously, if during numerical value, display control switch sends the warning the tinkle of bells to this distance less than setting;

Display control switch is by microprocessor, video frame synchronization and row synchronization extractor, character adder, driving circuit and commutation circuit are formed, the ultrasonic ranging data receive by two parallel port through microprocessor, the frame of separation and Extraction, line synchronising signal is synchronous as the vision signal that reference signal produces new vision signal and input, article two, vision signal is carried out the high speed switching, the stack of enforcement character, deliver to commutation circuit through driving circuit, the vision signal that will be superimposed with character signal by commutation circuit is delivered to monitoring device, when automobile is in non-reversing state, commutation circuit switches to monitor picture automatically and shows the time counting state;

Commutation circuit is to control a relay by microprocessor to constitute, and when reversing, sends a signal and gives microprocessor, and little reason device is exported a signal makes relay connect the reversing display working condition.

The utility model has the advantages that: can be installed on any vehicle and to make reversing usefulness, during reversing, the driver need not open car door, can be from monitoring device scenery behind the high-visible car; CCD colour or black and white wide-angle imaging probe, angle are 80 degree, horizontal throw 0.3-2 rice; Background is that erect image shows, and is undistorted, do not have how much distortions; Operating voltage DC12V can be shared with automobile power source.

Description of drawings:

Below in conjunction with drawings and Examples the utility model is further specified.

Accompanying drawing 1 is that the utility model is formed block scheme.

Accompanying drawing 2 is that display control switch is formed block scheme.

Accompanying drawing 3 is display control switch basic circuits.

The specific embodiment

See also accompanying drawing 1, shown in 2, several ultrasonic ranging exploration heads are installed on the automobile tail bumper/spoiler, the range data that records is delivered to display control switch, the vision signal of scenery behind the car of the rearview camera picked-up of installing on another route automobile, deliver to simultaneously to show and look controller, accompanying drawing 2 is display control switch block schemes, be provided with a microprocessor, by the data of receiving from ultrasonic ranging, deliver to character adder after the processing, the vision signal that camera is sent here is through extracting row, after the field sync signal, encode as reference signal, the vision signal that produces new vision signal and input is synchronous, and two vision signals are carried out high speed and switched, and implement the character stack, deliver to commutation circuit through driving circuit, deliver to monitoring device by commutation circuit.

Accompanying drawing 3 is display control switch schematic circuits, is made up of micro computer CPU (W87E58), integrated circuit of clock IC9, keyboard, RS485 interface circuit, ultrasonic ranging interface circuit CON4 etc., and the character stack interface of CPU is BUSY, CLK, DATA, CS1.The buzzing driving circuit is made of the PNP aerotron of S2, and its collecting electrode string has buzzer phone U5, and clock chip IC9 is used for the generation time signal, enters CPU by parallel bus; The ultrasonic ranging signal enters CPU by interface CON4; The character superposed signal is exported to the character overlapping controller by CPU, and by the stack of character overlapping controller deadline, range information and video, keyboard is used for the adjustment of time; Indicator lamp D1 and D2 are used for indicating operating status; Buzz circuit is used for reporting to the police.

Claims

1, a kind of reversing range finding monitoring device, it is characterized in that: on automobile tail rear bumper, adorn several ultrasonic ranging probes of a row, the backsight camera probe also is housed on the automobile, scenery vision signal behind the distance measuring signal of ultrasonic ranging probe output and the car of backsight camera probe output, import display control switch simultaneously, display control switch is with the data-signal of ultrasonic ranging, after generating character, select minimum distance numeral, be superimposed upon on the vision signal, be transported to the monitoring device in the operator's compartment, monitoring device shows the minor increment numeral of scenery and automobile and scenery behind the car simultaneously, if during numerical value, display control switch sends the warning the tinkle of bells to this distance less than setting.

2, by the described reversing range finding of claim 1 monitoring device, it is characterized in that: display control switch is by microprocessor, video frame synchronization and row synchronization extractor, character adder, driving circuit and commutation circuit are formed, the ultrasonic ranging data receive by two parallel port through microprocessor, the frame of separation and Extraction, line synchronising signal is as reference signal, the vision signal that produces new vision signal and input is synchronous, article two, vision signal is carried out the high speed switching, the stack of enforcement character, deliver to commutation circuit through driving circuit, the vision signal that will be superimposed with character signal by commutation circuit is delivered to monitoring device, when automobile is in non-reversing state, commutation circuit switches to monitor picture automatically and shows the time counting state.

3, by the described reversing range finding of claim 2 monitoring device, it is characterized in that: commutation circuit is to control a relay by microprocessor to constitute, when reversing, send a signal and give microprocessor, little reason device is exported a signal makes relay connect the reversing display working condition.