CN2134316Y

CN2134316Y - Car reversing alarming device

Info

Publication number: CN2134316Y
Application number: CN 92224907
Authority: CN
Inventors: 薄小星
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-06-18
Filing date: 1992-06-18
Publication date: 1993-05-26
Anticipated expiration: 2002-06-18

Abstract

The utility model discloses a car reversing alarming device, which can dispatch the speech reversing signal when the car is reversed to promote the pedestrians. A detection signal is dispatched by a transmitting apparatus. The detection signal is reflected to a receiver when encountering an obstacle, and is treated through an amplifier to output a DC changing signal whose distance is in the direct proportion as the obstacle, and the distance is displayed by an indication circuit in the simulative way. When the distance becomes small to a set value, a buzzer dispatches the alarm to remind the driver.

Description

Car reversing alarming device

The utility model technology relates to photoelectricity or super sonic from the detection technique field, specifically adopts pulsed light or ultrasonic measuring distance technology to be used for back-up alarm.

The back-up buzzer of Chu Shouing can send the distance that the language astern signal but can not be indicated car and obstruction to the driver in the market.

The purpose of this utility model is to provide a kind of device, and it can not only remind the pedestrian, can also the analog indication car to the distance of obstacle, and to a setting value news Chinese percussion instrument of operator's compartment is rung to remind the driver in that this distance is little.

The utility model is made up of two parts, language alarm circuit, light pulse projector are housed in its box 1, receptor and amplifier, it is installed in the appropriate location of tailstock portion, be used for sending the language alarm signal to the pedestrian when reversing, inspection vehicle is enlarged into dc level signal to the range signal of obstacle and with it simultaneously; Indicating circuit Homeway.com Chinese percussion instrument is housed in another part box 2, it is installed in the appropriate location in the operator's compartment and uses lead to link to each other with box 1, indicating circuit is converted to visible light signal with the electric signal that box 1 transmits during reversing, with the distance of the luminous number analog indication of lighting, export signal triggering news Chinese percussion instrument during to a setting value and report to the police when this distance is little to obstacle.

Fig. 1 is the circuit block diagram of this device;

Fig. 2 is the front schematic view of outer box 1;

Fig. 3 is the front schematic view of outer box 2.

Below in conjunction with accompanying drawing most preferred embodiment of the present utility model is elaborated.

The 12V accumulator jar that power supply in Fig. 1 circuit all adopts self-propelled vehicle to provide for oneself is controlled the switching of its power supply by the reversing change-over swith on the car.Language reverse alarming ［ 3 ］ can adopt integrated circuit to form square-wave oscillator with commercially available language reversing integrated circuit and loud speaker, signal generator ［ 1 ］; Promote infraluminescence pipe ［ 2 ］ with this square wave and send the infrared pulse signal, the infrared ray that optical receiver ［ 4 ］ adopts the infrared photosensitive tube of high sensitivity to receive to be reflected by obstacle is towards signal, because this signal is very faint, old friend's stream amplifier ［ 5 ］ adopts the op amp by high open-loop gain, the optical receiver output signal is amplified the back become straight voltage signal by rectifier doubler ［ 6 ］ rectification, the direct current amplifier of forming via the amplifier integrated circuit of high open-loop gain amplifies again, DC level that changes with distance between car and obstruction of direct current amplifier ［ 7 ］ output so far.The distance of car and obstacle is near, then the DC level height of direct current amplifier output; The DC level of distance direct current amplifier output is low.Indicating circuit ［ 8 ］ adopts 5 or 7 bit level indicating devices to drive luminotron, it is connected on the direct current amplifier mouth DC level is changed into visible light signal, the number that the high luminotron of DC level is lighted is many, the low then luminous number of lighting of DC level is few, when whole luminous lighting, the negative level high level step-down level of the luminotron of most significant bit utilizes this level conversion to trigger news Chinese percussion instruments ［ 9 ］ and sends warning.

Box 1 is installed in appropriate location behind the car, language alarm circuit ［ 3 ］, light pulse projector ［ 1,2 ］, light is housed in it connects device ［ 4 ］ and amplifier ［ 5,6,7 ］.Box 2 is installed in appropriate location in the operator's compartment, and indicating circuit ［ 8 ］ and news sound ［ 9 ］ are housed in it.

The working process of back-up alarm is: during reversing with the power connection of this device, warning circuit ［ 3 ］ sends the language reverse alarming with the prompting pedestrian, while optical transmitting set ［ 1,2 ］ send pulsed light, when running into obstacle, pulsed light reflexed to optical receiver ［ 4 ］ by it, optical receiver converts thereof into electric signal behind light pulse signal, this electric signal is through amplifier ［ 5,6,7 ］ DC level that arrives the variable in distance of obstacle with car of output after the processing and amplifying, indicating circuit ［ 8 ］ becomes visible light signal in order to the distance of analog indication car to obstacle this level conversion, makes during to a setting value news Chinese percussion instruments ［ 9 ］ send warning with the prompting driver when this distance is little.

Also can go out another back-up alarm, i.e. the back-up alarm of forming by ultrasonic emitting head ［ 2 ' ］ ultrasonic receiver ［ 4 ' ］ according to above-mentioned principle design.

The utility model crashproof especially night backing that helps moveing backward can reduce traffic accident.

Claims

1, a kind of back-up alarm that is made of plastic casing, language back-up buzzer is characterized in that it also comprises:

Light pulse projector [1,2] is contained in the box that is arranged in behind the car, is used to produce the light pulse signal of range finding;

Optical receiver [4] is contained in the above-mentioned box, receive the emission of above-mentioned projector through the light pulse signal of obstacle reflection and convert thereof into electric signal;

Amplifier [5,6,7] is contained in the above-mentioned box, links to each other with optical receiver [4], and with the electric signal amplification of its output, output is with the DC level of the variable in distance that arrives obstacle;

Indicating circuit [8], news Chinese percussion instruments [9] all are contained in the box that is arranged in operator's compartment, indicating circuit links to each other with amplifier [7], DC level is converted to visible light signal, the number analog indication of lighting with luminotron is to the distance of obstacle, exports signal triggering news Chinese percussion instruments [9] during to a setting value and reports to the police when this distance is little.

2, a kind of back-up alarm that is made of plastic casing, language back-up buzzer is characterized in that it also comprises:

Ultrasonic transmitter ［ 1,2 ' ］ is contained in the box that is arranged in behind the car, is used to produce the ultrasonic signal of range finding;

Ultrasonic receiver ［ 4 ' ］ is contained in the above-mentioned box, receive the emission of above-mentioned projector through the ultrasonic signal of obstacle reflection and convert thereof into electric signal;

Amplifier ［ 5,6,7 ］ is contained in the above-mentioned box, links to each other with ultrasonic receiver ［ 4 ' ］, and with the electric signal amplification of its output, output is with the DC level of the variable in distance that arrives obstacle;

Indicating circuit ［ 8 ］, news Chinese percussion instruments ［ 9 ］ all are contained in the box that is arranged in operator's compartment, indicating circuit links to each other with amplifier ［ 7 ］, DC level is converted to visible light signal, the number analog indication of lighting with luminotron is to the distance of obstacle, exports signal triggering news Chinese percussion instruments ［ 9 ］ during to a setting value and reports to the police when this distance is little.