CN2538628Y - Visible safety aid for vehicle running and parking - Google Patents
Visible safety aid for vehicle running and parking Download PDFInfo
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- CN2538628Y CN2538628Y CN 02226763 CN02226763U CN2538628Y CN 2538628 Y CN2538628 Y CN 2538628Y CN 02226763 CN02226763 CN 02226763 CN 02226763 U CN02226763 U CN 02226763U CN 2538628 Y CN2538628 Y CN 2538628Y
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- 239000003990 capacitor Substances 0.000 description 12
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Abstract
An automobile running and parking auxiliary video safety device belongs to a video electronic warning device for automobiles, which comprises a main device control box, a power source, an ultrasonic inductor unit, an infrared camera and a liquid crystal display. Wherein, a master control circuit and a display control circuit are arranged in the main device control box. The utility model is characterized in that the LCD is a TFT LCD composed of a TFT display control circuit and a TFT display screen and connected with the main device control box through a transmission cable J2. The infrared camera is connected with the TFT display control circuit through a transmission cable J5. The utility model has the advantages of simple structure, high sensitivity, large measurable angle, strong immunity, digital and image prompt, long measurable distance of 2m for fixed planes and 1.2m for human body. The utility model can be mounted onto automobiles of different types to ensure automobile running safety.
Description
Technical field:
The utility model relates to a kind of driving and the visual safe auxiliary device of automobile parking, and it belongs to a kind of electronic alarming device, especially for the electronic alarming device that prevents that automobile from meeting accident and colliding.
Background technology:
Existingly be used to prevent that automobile from probably having two classes at the device of exercising the accident collision that is taken place when maybe needing to berth: one, ultrasonic distance induction installation, two, image visual device, but all have following problem: the ultrasonic distance induction installation is because the design problem of electronic circuit, make the close together that it can be tested, general only to test the human body outside planar object outside 1.5 meters and 0.6 meter; Next is few owing to its information channel, so generally can only be used for the information behind the test carriage, and the angle of test is also less; The 3rd, the LED prompting of auditory tone cues and segmentation can only be provided, there is not digital prompt; The 4th, can not distinguish concrete encumbrance; The 5th, because the problem that circuit layout exists, make its jamproof poor-performing.The image visual device is because photometric characteristics, and at weather relatively under the condition of severe, low visibility, visual range are narrow.Under the weak state of light, the test blind area is big, image blurringly is difficult for distinguishing obstacle, and can not test obstacle distance under the normal display state.
Technology contents:
The utility model purpose is to provide a kind of and has that good visual effect, angular field of view are big, strong anti-interference performance, driving and the visual safe auxiliary device of automobile parking safe in utilization.
The purpose of this utility model is achieved in that
The visual safe auxiliary device of a kind of driving and automobile parking, it comprises a host computer control box, a power supply, one group of ultrasonic sensing device, an infrared camera and a Liquid Crystal Display (LCD), be provided with main control circuit and display control circuit in described host computer control box, described Liquid Crystal Display (LCD) is the TFT Liquid Crystal Display (LCD); The TFT telltale is made up of TFT display control circuit and TFT read-out, is connected to the host computer control box by transmission line J2; Described infrared camera is connected to the TFT display control circuit by transmission line J5.Described main control circuit comprising:
A, one are provided clock and are regularly being exported on 40k impulse singla, P00 and the P21 pin regularly output sound alerting signal and P20 on out-gate circuit control signal, the P24 pin on its P02 and the P27 pin by oscillating circuit, P22, the central processor CPU 1 of P23 pin output TFT telltale control signal;
B, an audible alarm circuit;
C, a ultrasonic sensing device circuit that constitutes by a plurality of ultrasonic sensing device circuit;
D, one are used for simultaneously providing for central processor CPU 1, TFT telltale and multichannel ultrasonic inductor circuit and infrared camera the power circuit of power supply.
Described power circuit comprises a filter circuit of being made up of for unidirectional transistor diode D1 inductance T9, the T10 that can eliminate the high-frequency harmonic that seals on the power supply and the assurance power supply flow direction, a mu balanced circuit of being made up of two integrated regulator U7, U8 and electric capacity.Described gate circuit control circuit is made up of two multiple-channel electronic switches, by the P00 of central processor CPU 1, and timing out-gate circuit control signal on the P21 pin.Described TFT display control circuit comprises a central processor CPU 2 that clock is provided by oscillating circuit; P74 to central processor CPU 2, P75, P76, pressing of P77 pin input control signal are made control circuit; P54 by central processor CPU 2, P55, P56, a P57 pin are exported the LED indicating circuit of shows signal; An image display driver circuit; A power circuit that is used for providing power supply to central processor CPU 2, reset circuit, TFT display circuit and read-out.Infrared camera is the infrared camera with night vision function.
The utility model is simple in structure, is quick on the draw, and the angle that can test is big, and stronger antijamming capability is arranged, and has realized numeral, the prompting of image picture, and testable distance is far away, and the plane of testable fixed distance is 2 meters, and human body is 1.2 meters.The utility model can be installed on the various dissimilar vehicles, to guarantee the driving safety of vehicle.
Description of drawings:
Accompanying drawing 1 is a structural representation of the present utility model
Accompanying drawing 2 is a circuit structure block scheme of the present utility model
Accompanying drawing 3 is control circuit figure of the present utility model
Accompanying drawing 5 is the control circuit figure of Liquid Crystal Display (LCD) of the present utility model
The specific embodiment:
Be embodiment of the present utility model with accompanying drawing 1,2,3,4,5 below, the utility model be further detailed:
The utility model can be made up of host computer control box, ultrasonic sensing device, TFT telltale, infrared camera, in described host computer control box, be provided with the host computer control circuit, described probe can be the probe of eight parallel connections, described host computer control circuit comprises: one provides clock by oscillating circuit and at its P02, regularly export 40k impulse singla, P00 on the P27 pin, out-gate circuit control signal, P24 pin output sound alerting signal and P20 on the P21 pin, P22, the central processor CPU 1 of P23 pin output TFT telltale control signal; An audible alarm circuit; A power circuit that is used for providing power supply to central processor CPU 1, TFT telltale and eight passage ultrasonic sensing device circuit; Eight passage ultrasonic sensing device circuit that constitute by eight ultrasonic sensing device circuit.The audible alarm circuit is made up of R33 and Q13.
Described power circuit comprises a filter circuit of being made up of for unidirectional transistor diode D1 inductance T9, the T10 that can eliminate the high-frequency harmonic that seals on the power supply and the assurance power supply flow direction, form to prevent to cause to the infringement of system with by the mu balanced circuit that two integrated regulator U7, U8 and capacitor C 1, C2, C13, C14, C15, C18, C19, C20, C21 form by the power supply reversal connection.Inductance: T9, T10, transistor diode: D1 (1N4001), integrated regulator: U7 (7808), U8 (78L05), electric capacity: C1, C2, C13, C15, C18, C19, C20, C21.Power supply is directly inserted by automobile 12V level; inductance T9; T10 eliminates the high-frequency harmonic that seals on the power lead; it is unidirectional that D1 flows to power supply; strobe and protect main frame to avoid when the power supply reversal connection, being burnt; integrated regulator U8:78L05 supplies with CPU and CPU carries comparator reference voltage; integrated regulator U7:7808 supplies with ultrasonic sensing device amplifying circuit, 4052 electronic switchs and integrated transporting discharging amplifier, and C1, C2, C13, C15, C18, C19, C20, C21 eliminate voltage fluctuation and harmonic signal on the power supply.
Described gate circuit control circuit comprises two two four-way electronic switch (4052): U3, U4, resistance: R34, R35, R36, R37, R38, R49, R50, R51, crystal triode: Q9, Q10, Q11, Q12.P00 by central process unit 1, out-gate circuit control signal regularly on the P21 pin, gating X0 successively, X1, X2, the X3 door, with the P02 that allows by central process unit 1, on the P27 pin regularly the 40K signal of output output to left front, right front, left back, right abaft ultrasonic sensing device successively, and with the detected signal of corresponding ultrasonic sensing device by Y0, Y1, Y2, Y3 door are input to ultrasonic sensing device inductor circuit successively.
Described ultrasonic sensing device circuit ultrasonic sensing device emission and receiving unit, power circuit, one-level amplifying circuit, frequency selection purposes circuit, second amplifying circuit, integer circuit, filtering and comparator circuit are formed.
Described ultrasonic sensing device emission and receiving unit crystal triode: Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 (S8050), resistance: R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, R20, R21, R22, R23, R24, R25, R26, R27, R28, R29, R30, R31, R32, electric capacity: C3, C4, C5, C6, C7, C8, C9, C10, high frequency booster: T1, T2, T3, T4, T5, T6, T7, T8, transistor diode: D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18.Because the signal that central process unit 1 produces is that level is the signal of 5V, for can being arranged, bigger more stable emissive power reaches the normal operation that does not influence CPU, and needing directly provide the promotion electric current by the 8V level, so by Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8, R9, R10, R11, R12, R13, R14, R15, R16, R25, R26, R27, R28, R29, R30, R31, R32 carries out voltage transitions, C3, C4, C5, C6, C7, C8, C9, C10 choose big electric capacity can provide bigger moment high frequency booster primary current.Resistance R 17, R18, R19, R20, R21, R22, R23, R24 and transistor diode D3, D4, D5, D6, D7, D8, D9, D10, D11, D12, D13, D14, D15, D16, D17, D18 make the level that is input to electronic switch 4052 and electric current be unlikely to cause damage and the signal level that is input to ultrasonic sensing device amplifying circuit is remained in the 0V-0.7V 4052.Consider the capacity effect and the pathway reaction speed of ultrasonic emitting and receiving loop simultaneously, by surveying under different ambient temperature (30 ℃～80 ℃), transmit central frequency all between 41.5K and 42.7K, the former pulse of choosing 41.5K and two fixing different frequencies of 42.5K transmits and can adapt to different ambient temperatures, must frequency of utilization scanning, but like this then can make main frame have faster speed of response reaches the different ambient temperature (30 ℃～80 ℃) of simultaneous adaptation.R1, R2, R3, R4, R5, R6, R7, R8 control ultrasonic sensing device receiving sensitivity and ultrasonic sensing device failure of oscillation time, the big more then sensitivity of resistance is high more, at the bottom of the more little then sensitivity of resistance.But because resistance is big more, the failure of oscillation time is long more, can cause closely and can not detect, and by test, we have chosen 22K, neither allows sensitivity descend too much, and the failure of oscillation time can be accepted again simultaneously.By the detected signal of corresponding ultrasonic sensing device is input to the ultrasonic sensing device successively by Y0, Y1, Y2, Y3 door, the inductor amplifying circuit is to eliminate the effect that interferes with each other between level and the level, when making a ultrasonic sensing device emission and reception, can not influence other seven ultrasonic sensing devices.
The composition of power circuit 2: resistance: R62, R63, R64, R65, R76, R77, R78, R79, electric capacity: C31, C32, C33, C34, C35, C36, C44, C45, C46, C47, C48, C49.Resistance R 64, R65, R78, R79 provide 5,10,12 pin of half power supply to op amp (TL084) U5, U6 (input of op amp forward), make op amp that bigger operating range and elimination zero passage blind area be arranged.Voltage fluctuation and harmonic signal on 5,10,12 pin of capacitor C 35, C36, C48, C49 elimination op amp U5, U6.Voltage fluctuation on resistance R 62, R63, R76, R77 and capacitor C 31, C32, C33, C34, C44, C45, C46, the C47 elimination 8V power supply and harmonic signal are to the influence of 5,10,12 pin of op amp U5, U6.
Described one-level amplifying circuit is made up of R52, R66, C24, C37.Resistance: R52, R66, electric capacity: C24, C37, op amp U5, the first order op amp that 5,6,7 pin of U6 are formed.Op amp 5 pin provide the positive level input of comparator comparative voltage, get half of op amp operating voltage, make op amp operating range maximum.Capacitor C 24, C37 plays the effect of isolated DC level signal and harmonic carcellation, R52, R66 forms negative feedback loop, in order to avoid complete machine when operation the noise elimination that produces and environmental noise seal in to be exaggerated by ground wire or 8V power lead and cause wrong report by op amp, the strong signal of can decaying is simultaneously avoided strong signal blockage one-level amplifier section.
Described frequency selection purposes circuit is made up of 8,9,10 pin of resistance R 53, R54, R55, R67, R68, R69, capacitor C 25, C26, C38, C39 and TL084, and capacitor C 25, C26, C38, C39, R35, R68 have determined the size of 40K signal-selectivity.: resistance: R52, R66, electric capacity: C24, C37, op amp U5, the first order op amp that 5,6,7 pin of U6 are formed.Op amp 5 pin provide the positive level input of comparator comparative voltage, get half of op amp operating voltage, make op amp operating range maximum.Capacitor C 24, C37 plays the effect of isolated DC level signal and harmonic carcellation, R52, R66 forms negative feedback loop, in order to avoid complete machine when operation the noise elimination that produces and environmental noise seal in to be exaggerated by ground wire or 8V power lead and cause wrong report by op amp, the strong signal of can decaying is simultaneously avoided strong signal blockage one-level amplifier section.
Described second amplifying circuit is made up of 12,13,14 pin of resistance R 56, R61, R69, R75, capacitor C 28, C30, C41, C43, adjustable resistance VR1, adjustable resistance VR2 and op amp U5, U6.Can regulate super sonic survey sensitivity by regulating VR1/VR2.Resistance: R56, R61, R70, R75, electric capacity: C28, C30, adjustable resistance VR1, VR2, op amp U5, the third stage op amp that 12,13,14 pin of U6 are formed.Op amp 10 pin provide the positive level input of comparator comparative voltage, get half of op amp operating voltage, make op amp operating range maximum, can regulate super sonic by adjusting VR1 or VR2 and survey sensitivity.
Described integer circuit is by D19, D20, resistance R 57, R58, R59, R60, R71, R72, R73, R74, capacitor C 27, C29, C40, C42 and op amp U5,12 of U6,13,14 pin are formed, and the 40K impulse singla with certain level can be converted to DC level.Transistor diode: D19, D20, resistance: R57, R58, R59, R60, R71, R72, R73, R74, electric capacity: C27, C29, C40, C42, op amp U5,12 of U6, the fourth stage op amp that 13,14 pin are formed, transistor diode D19, D20 filtering and elimination DC level, resistance R 57, R71, capacitor C 27, C40 attenuates high frequency signals, resistance R 59, R60, R73, R74, capacitor C 29, the C42 decay end, is signal frequently, and the 40K signal that will have certain level converts DC level to.
The composition of described filtering and comparator circuit is by resistance R 39, R40, R41, R42, R82, R83, capacitor C 17, C18, the P31 of C23 and central process unit 1, P32, the P33 pin is formed, resistance R 82, and R83 has supplied the reference voltage of central process unit 1 built-in comparator to the P33 pin, P31, P32 pin input comparative voltage.Described filtering and comparator circuit have high order harmonic, noise and the effect of isolated DC level of elimination.
The selected Liquid Crystal Display (LCD) of the utility model is a TFT telltale 5, and in the described telltale, described TFT display control circuit comprises a central processor CPU 2 that clock is provided by oscillating circuit; P74 to central processor CPU 2, P75, P76, pressing of P77 pin input control signal are made control circuit; P54 by central processor CPU 2, P55, P56, a P57 pin are exported the LED indicating circuit of shows signal; An image display driver circuit; A power circuit that is used for providing power supply to central processor CPU 2, reset circuit, TFT display circuit and read-out, it also comprises some conventional image display driver circuits, external sound signal, built-in sound signal is selected circuit, colourity, brightness, contrast control circuit, VCD vision signal and camera video signal selecting circuit.
The composition of the power circuit of described TFT telltale: integrated regulator: U12 (78L08), U13 (78L05), electric capacity: C50, C51, C52, C53, C54, C55, C56, C57.Integrated regulator U12:78L05 supplies with central process unit 2, presses system control circuit, LED indicating circuit, image display driver circuit, external sound signal, built-in sound signal is selected circuit, colourity, brightness, contrast control circuit, VCD vision signal and camera video signal selecting circuit.Integrated regulator U13:78L08 supplies with camera.C50, C51, C52, C53, C54, C55, C56, C57 eliminate voltage fluctuation and harmonic signal on the power supply.
Forming by SW1, SW2, SW3, SW4, resistance R 83, R84, R85, R86 of described TFT telltale by the system control circuit.By making: SW1, SW2, SW3, SW4, resistance: R5, R6, R7, R8.Resistance R 5, R6, R7, R8 is drop-down to eliminate outer signals to 2 mouthfuls of P74 of central process unit, P75, P76, the interference of P77.
Described LED indicating circuit is made up of resistance R 87, R88, R89, R90, LED1, LED2, LED3, LED4, and indication is used in indication colourity, brightness, contrast adjustment or external pressure.
The image-driven display circuit of described TFT telltale is by the external power supply control circuit, the line frequency voltage conversion circuit, external vision signal change-over circuit, blank screen control circuit and one provide clock by oscillating circuit and at its P65, P66, output is red on the P67 pin, green, blue tristimulus signals are to the TFT read-out, output blank screen control signal on the P61 pin, output external power supply control signal on the P60 pin, outputting video signal and camera video signal are selected control signal on the P60 pin, P72, export colourity on the P73 pin, brightness, the central processor CPU 2 of contrast adjustment control signal is formed.
Described TFT display image drives the composition of the external power supply control circuit of display circuit: crystal triode: Q14, Q15. resistance: R80, R81, the R60 pin of central process unit 2.Central process unit 2 is according to the detected obstacle distance signal of main frame of backing-up lamp (being connected to the P53 pin of central process unit 2), P63 (external vision signal input), P74 (external pressure input) and interface J2 input, and decision shows external vision signal or infrared camera vision signal.By the P60 pin output 5V level signal of central process unit 2, by Q14, Q15 is converted to the 12V level signal and outputs to the read-out power control terminal.
Described TFT display image drives the composition of the line frequency voltage conversion circuit of display circuit: resistance: R106, R107, R108, R109, electric capacity: C63, crystal triode: Q18, Q19.By Q18, Q19 amplifies the line frequency voltage signal of read-out input and reversal voltage signal not.
Described TFT display image drives the composition of the vision signal change-over circuit of display circuit: resistance R 100, R101, R102, R103, R104, R105, crystal triode: Q16, Q17.By Q16, Q17 amplifies the external vision signal of read-out input and reversal voltage signal not.
Described TFT display image drives the composition of the blank screen control circuit of display circuit: crystal triode: Q21, transistor diode: D21, resistance: R111, R112, R113, electric capacity: C64.By the P61 pin of central process unit 2 is put height, the vision signal (AV-OUT) that outputs to read-out is closed.
Described TFT display image drives the external vision signal of display circuit, the composition of camera video signal selecting circuit: 4052 electronic switch U10, resistance: R92, R93.By the P70 pin of central process unit 2 being put height or the external vision signal of bottom set gating or camera video signal to read-out.
The external sound signal of described TFT telltale, built-in sound signal is selected the composition of circuit: crystal triode: Q20, resistance: R110, buzzer phone: BUZ1, BUZ2.When built-in sound signal works, lock external sound signal.
The colourity of described TFT telltale, brightness, the composition of contrast control circuit: integrated circuit U11 (X9241), resistance: R94, R95, R96, R97, R98, R99.The P72 of central process unit 2, the P73 pin outputs a control signal to U11, changes the colourity that outputs to read-out, brightness, the voltage of contrast control signal is to reach the colourity of control display screen, brightness, the purpose of contrast ratio.
The composition of the reset circuit of described TFT telltale: resistance: R91, electric capacity: C60.R91, C60 form reset circuit more resets on the highland central process unit 2.
Principle of work of the present utility model: according to the hypracoustic characteristic: frequency is higher, wavelength is shorter, can propagate along certain orientation as light, Propagation of Energy is comparatively concentrated, most of energy can be reflected on two kinds of different media interfaces, and the frequency-response data of ultrasonic transduter, can produce the impulse singla of the fixing different frequency of two strings by the CPU timesharing, every series impulse signal comprises 19 pulses, promote ultrasonic transduter emission driving circuit, after receiving by ultrasonic transduter, amplify through one-level, frequency selection purposes, secondary amplifies, deliver to the built-in comparator of CPU behind the filter shape, CPU send the result TFT to show and the audible alarm part after treatment, and open tailstock camera simultaneously background images signal reverted image and digital graphics signal are superimposed to the demonstration of TFT telltale.
The utility model can be by four-eight ultrasonic sensing devices (the car body front and back are installed) cycle detection, detection signal is chosen and is amplified through the high speed integrated transporting discharging, delivering to central microprocessor handles, central microprocessor is opened noctovisor simultaneously, background images passes back to after central microprocessor carries out reverted image utilization, the two result delivered in the lump carry out background images and digital graphics on the TFT widescreen display and show that caution sound carries out alarm.Accurately the detecting obstacles object distance is from the distance and bearing of car body in system, and built-in night vision function of noctovisor and the true colour display screen of TFT show more can make things convenient for drives to use night.Four-eight passages can be tested obstacle in a big way, reduce the system test dead band, and the utilization of noctovisor image reverted image technology more makes reserve drive to come into plain view.The ultrasonic sensing device all adopts integrated probe (emission, reception are installed on one), and is easy for installation, and employing shielding wire ground connection can reduce external environment to greatest extent and ultrasonic transduter seals in main frame formation interference by lead-in wire.System configuration video, audio signal interface, the output of the automobile-used sound equipment video equipment of convenient switching, the TFT telltale of native system can be used as the final terminal of audio frequency, video output.When using automobile-used acoustical equipment, in order to ensure the traffic safety of chaufeur, system adopts artificial intelligence technology, have obstacle in the surveyed area scope system's automatic switchover main frame in alarm condition, alerting drivers.When obstacle away from car body during not in detection range, system automatically switches into the output of original sound equipment video equipment, makes things convenient for chaufeur.When chaufeur carries out reverse travel, system also with the automatic switchover main frame in alarm condition.
Claims (5)
1, the visual safe auxiliary device of a kind of driving and automobile parking, it comprises a host computer control box (1), a power supply (3), one group of ultrasonic sensing device (2), an infrared camera (4) and a Liquid Crystal Display (LCD) (5), in described host computer control box (1), be provided with main control circuit and display control circuit, it is characterized in that described Liquid Crystal Display (LCD) is the TFT Liquid Crystal Display (LCD); The TFT telltale is made up of TFT display control circuit and TFT read-out, is connected to host computer control box (1) by transmission line J2; Described infrared camera is connected to the TFT display control circuit by transmission line J5.Described main control circuit comprising:
A, one are provided clock and are regularly being exported on 40k impulse singla, P00 and the P21 pin regularly output sound alerting signal and P20 on out-gate circuit control signal, the P24 pin on its P02 and the P27 pin by oscillating circuit, P22, the central processor CPU 1 of P23 pin output TFT telltale control signal;
B, an audible alarm circuit;
C, a ultrasonic sensing device circuit that constitutes by a plurality of ultrasonic sensing device circuit;
D, one are used for simultaneously providing for central processor CPU 1, TFT telltale (3) and multichannel ultrasonic inductor circuit and infrared camera (4) power circuit of power supply.
2, the visual safe auxiliary device of driving described in claim 1 and automobile parking, it is characterized in that described power circuit comprises a filter circuit of being made up of for unidirectional transistor diode D1 inductance T9, the T10 that can eliminate the high-frequency harmonic that seals on the power supply and the assurance power supply flow direction, a mu balanced circuit of being made up of two integrated regulator U7, U8 and electric capacity.
3, the visual safe auxiliary device of driving described in claim 1 and automobile parking, it is characterized in that described gate circuit control circuit is made up of two multiple-channel electronic switches, by the P00 of central processor CPU 1, timing out-gate circuit control signal on the P21 pin.
4, the visual safe auxiliary device of driving described in claim 1 and automobile parking is characterized in that described TFT display control circuit comprises a central process unit 2 (CPU) that clock is provided by oscillating circuit; P74 to central processor CPU 2, P75, P76, pressing of P77 pin input control signal are made control circuit; P54 by central processor CPU 2, P55, P56, a P57 pin are exported the LED indicating circuit of shows signal; A visual display driver circuit; A power circuit that is used for providing power supply to central processor CPU 2, reset circuit, TFT display circuit and read-out.
5, the visual safe auxiliary device of driving described in claim 1 and automobile parking, the infrared camera of the described infrared camera of its feature (4) for having night vision function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02226763 CN2538628Y (en) | 2002-04-08 | 2002-04-08 | Visible safety aid for vehicle running and parking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02226763 CN2538628Y (en) | 2002-04-08 | 2002-04-08 | Visible safety aid for vehicle running and parking |
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| CN2538628Y true CN2538628Y (en) | 2003-03-05 |
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| CN 02226763 Expired - Fee Related CN2538628Y (en) | 2002-04-08 | 2002-04-08 | Visible safety aid for vehicle running and parking |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012514A (en) * | 2010-11-11 | 2011-04-13 | 王伟 | Ultrasonic reflection automobile rear-end collision-preventing instrument in foggy weather |
| CN102392547A (en) * | 2011-10-14 | 2012-03-28 | 陕西科技大学 | Parking lot vehicle anti-starching device based on infrared technology and realization method thereof |
| CN102933428A (en) * | 2010-06-15 | 2013-02-13 | 爱信精机株式会社 | Drive assist device |
-
2002
- 2002-04-08 CN CN 02226763 patent/CN2538628Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102933428A (en) * | 2010-06-15 | 2013-02-13 | 爱信精机株式会社 | Drive assist device |
| CN102933428B (en) * | 2010-06-15 | 2015-07-15 | 爱信精机株式会社 | Drive assist device |
| CN102012514A (en) * | 2010-11-11 | 2011-04-13 | 王伟 | Ultrasonic reflection automobile rear-end collision-preventing instrument in foggy weather |
| CN102392547A (en) * | 2011-10-14 | 2012-03-28 | 陕西科技大学 | Parking lot vehicle anti-starching device based on infrared technology and realization method thereof |
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