CN201313533Y - Visual radar reversing system with compass - Google Patents
Visual radar reversing system with compass Download PDFInfo
- Publication number
- CN201313533Y CN201313533Y CNU2008201474823U CN200820147482U CN201313533Y CN 201313533 Y CN201313533 Y CN 201313533Y CN U2008201474823 U CNU2008201474823 U CN U2008201474823U CN 200820147482 U CN200820147482 U CN 200820147482U CN 201313533 Y CN201313533 Y CN 201313533Y
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Abstract
The utility model discloses a visual radar reversing system with a compass, which is characterized by comprising a display screen, a display control circuit connected with the display screen, a slave unit MCU connected with the control circuit, a main unit MCU connected with the slave unit MCU, an AD conversion circuit and a camera arranged on the rail of an automobile; the input end of the AD conversion circuit is connected with a temperature sensor and a magnetic filed sensor; the input end of the main unit MCU is connected with an ultrasonic probe which is arranged at the tail of the automobile; the camera is connected with the display control circuit which is also connected with a loudspeaker; and the display screen is provided with a compass display module, a temperature display module and a clock display module. The utility model realizes the combination of the functions of reverse rage measurement and image monitoring, and the functions of an electronic compass, an electronic thermometer and a clock on the basis of visual reversing. The utility model has the advantages of convenient mounting, economy, practicability, safety, reliability, and the like.
Description
Technical field
The utility model relates to a kind of visual backing system, and more specifically saying so has digital compass, electronic thermometer, the video radar backing system of the band compass of electronic clock.
Background technology
Along with the develop rapidly of modern civilization degree and the people pursuit to the spiritual civilization life culture, automobile has become the requisite walking-replacing tool of people, and the full-automatic degree of automobile and multifunction degree are also increasing rapidly.
At present, two kinds of up-to-date technologys have appearred in reversing: ultrasonic ranging and backsight shooting.The shooting of Reverse Sensor and backsight cuts both ways, and the former has the advantage of definite judging distance, but to the reinforcing bar of the ditch at car rear, cliff, protrusion etc., super sonic can't be responded to, and this also is the dead angle on the reversing safety; Latter's image is intuitively true, but can't obtain accurate distance.How both advantages are got up, the shortcoming of eliminating both is the emphasis difficult problem that video vehicle back radar solves.
Automobile has become the general vehicle, often needs to obtain a lot of environmental informations in motion.Reverse Sensor often has only in the time of reversing just to be used, and causes the waste of resource.Though a lot of automobile watch are arranged on the market, compass, heat indicator is sold, and buys so many article and puts onboard, not only takes up room but also not attractive in appearance, and often is installed in diverse location in the car, uses inconvenience, even the image traffic safety.
The inventor has developed a kind of later-model video radar backing system based on the defective of prior art, and it has digital compass simultaneously, electronic thermometer, and electronic clocks etc. are multi-functional.
The utility model content
The purpose of this utility model is to provide and have digital compass, electronic thermometer, the video radar backing system of the band compass of electronic clock for overcoming the deficiencies in the prior art.
Further purpose of the present utility model be to provide one with back mirror visual backing system that be combined as a whole, that structure is small and exquisite.
Technology contents of the present utility model is: a kind of video radar backing system with compass, its feature comprises read-out, the display control circuit that connects with read-out, the slave MCU that connects with display control circuit, the main frame MCU and the A/D convertor circuit that connect with slave MCU, and the input end of A/D convertor circuit is connected with temperature sensor and magnetic field sensor; The input end of main frame MCU is connected with ultrasonic probe, ultrasonic probe is located at automobile tail, also comprise the camera of being located at automobile tail, described camera connects with display control circuit, display control circuit also is connected with a loud speaker, and described read-out is provided with compass display module, temperature display module and clock display module.
Further technology contents of the present utility model is: comprise a housing, be provided with aforesaid display control circuit, slave MCU, main frame MCU and A/D convertor circuit in the housing, housing is provided with aforesaid read-out.
Further technology contents of the present utility model is: described read-out is a LCD display; Described ultrasonic probe is provided with two at least.
Further technology contents of the present utility model is: also comprise the memory device that is used for image pickup signal behind the storage cart, described memory device connects with display control circuit.
Further technology contents of the present utility model is: described housing is a room mirror housing, described back-mirror housing front end face also is provided with a light deflector portion, be provided with a hyalomere in the middle of the described light deflector portion, this hyalomere is provided with aforesaid LCD display.
Further technology contents of the present utility model is: described magnetic field sensor is located in the housing.
Further technology contents of the present utility model is: described temperature sensor comprises to be located at the temperature sensor in the car and to be located at the outer temperature sensor of car.
The utility model beneficial effect compared with prior art is: the utility model has been realized digital compass, electronic thermometer and clock function by realized the combination of reversing range finding and video monitor function in a Circuits System on the basis of visual reversing.Have characteristics such as easy for installation, economical and practical, safe and reliable.And combine with back mirror, not only dwindled the volume of system, also greatly reduce the cost of system.
Below in conjunction with the drawings and specific embodiments the utility model is further described.
Description of drawings
Fig. 1 is the hardware block schematic diagram of the utility model specific embodiment;
Fig. 2 is the profile plan sketch of the utility model specific embodiment;
Fig. 3 is the digital compass scheme drawing of the utility model specific embodiment;
The specific embodiment
In order to more fully understand technology contents of the present utility model, the technical solution of the utility model is further introduced and explanation below in conjunction with specific embodiment.
As depicted in figs. 1 and 2, a kind of video radar backing system of the utility model, comprise read-out 1, the display control circuit 2 that connects with read-out 1, the slave MCU3 that connects with display control circuit 2, the main frame MCU4 that connects with slave MCU3 and A/D convertor circuit 5, the input end of A/D convertor circuit 5 is connected with temperature sensor 6 and magnetic field sensor 7; The input end of main frame MCU is connected with ultrasonic probe 8, ultrasonic probe is located at automobile tail, also comprise the camera 9 of being located at automobile tail, camera 9 connects with display control circuit, display control circuit 2 also is connected with a loud speaker 20, read-out 1 is provided with compass display module, temperature display module and clock display module (can need to be designed to different patterns, be shown in the read-out, distinguish by flashing with color, the back demonstration that can superpose also can take turns to show that automatically these can be set on demand by the chip in the display control circuit).Also comprise a housing 30, be provided with aforesaid display control circuit 2, slave MCU3, main frame MCU4 and A/D convertor circuit 5 in the housing 30, housing 30 is provided with aforesaid read-out 1.Read-out 1 is a LCD display; Ultrasonic probe 8 is provided with two at least.Also comprise the memory device 3 that is used for image pickup signal behind the storage cart, described memory device 31 connects with display control circuit 2.Housing 30 is a room mirror housing 10, and back-mirror housing 10 front end faces also are provided with a light deflector portion 11, is provided with a hyalomere 12 in the middle of the described light deflector portion, and this hyalomere 12 is provided with aforesaid LCD display 1.Magnetic field sensor 7 is located in the housing 30, and temperature sensor 6 then comprises to be located at the temperature sensor in the car and to be located at the outer temperature sensor of car, and two temperature display modules can be set on the read-out, and one shows vehicle interior temperature, the outer temperature of demonstration car.Front end in mirror case 10 also is provided with indicator lamp 13 and source switch 14.
Technical matters during below to concrete enforcement is described as follows:
Read-out is arranged on the eyeglass inboard, be provided with circuit card (aforesaid display control circuit, slave MCU, main frame MCU and A/D convertor circuit) in the interlayer of housing, circuit card is provided with the change-over circuit of main control microprocessor (MCU) and sensor, also comprised magnetic field sensor, housing is provided with a plurality of interfaces (interface of power supply, ultrasonic probe and camera) and control button.Total system is installed in the back mirror casing.The GND ground wire of automobile storage battery power lead 12V and automobile is powered to system through power supply wiring.Camera links to each other with utilizing camera interface, takes the car back spectacle.Radar (super sonic) line connects ultrasonic probe and links to each other with main frame MCU, measuring distance, and main frame MCU links to each other with slave MCU then, finish acoustic image through display control circuit again and handle, scene is shown that by TFT-LCD sound is sent by loud speaker, loud speaker is installed in the back mirror back, Yi Bian one.The radar line wherein has single line to be connected on the automobile power lead of falling the back light, and this signal wire (SW) is a high level when reversing, and system enters reversing mode automatically.
POWER is the source switch button.When pressing the POWER button, total system is started working, and red indicating light is lighted.
This moment, the system display left side was the coordinate (compass display module) of display orientation, can show orientation roughly.A triplex row show is divided on the right, above delegation show the time (clock display module), form be xx (hour)---xx (minute)---xx (second).Middle row shows vehicle interior temperature (the temperature display module has only detected vehicle interior temperature among this embodiment, also can increase temperature detection outside the car in other embodiment), and form is: xx.x degree centigrade.Following delegation display orientation (compass display module), form is: the xxx degree.
When reversing, when system detected the automobile power supply signal of falling back light line and is high level, system withdrawed from present mode and enters reversing mode.
At this moment, show the scene image (range 150 degree) of the tailstock on 3.5 cun TFT screens, and stack simultaneously shows the distance of car and obstruction, simultaneity factor also has the sound, the voice suggestion of zones of different, guarantees that driver's safety moves backward legibly.
1) 3 cun TFT screen upper end be car body from the nearest distance indication of obstacle, the lower end is the obstacle demonstration in the left and right orientation of car body.When the obstacle in certain orientation when car body is nearest, its semi-transparent orientation circle can glimmer, distance will be presented at the upper end of screen.
2) will there be different semi-transparent color showings in different zones, 2.59 rice～1.50 meters is green for pre-police region shows, 1.49 meters～0.90 meter for slow-drivezone show yellow, 0.89 meter～0.3 meter show redness, distinguish for promptly stopping for the guard zone less than 0.3 meter, system will point out the driver to stop, and be shown as-P.
3) different zone is with the sound and the voice suggestion of different rhythm.
When 4) starting backing system, system will scan all probes at every turn, and the self check of popping one's head in simultaneously will be pointed out when as discovery probe failure being arranged.
5) voice reporting distance and buzzer phone caution:
Visual reversing:
Reverse Sensor (super sonic) is exactly that radar probe emission super sonic by afterbody runs into obstacle bounce-back back and determines that obstacle reports to the police by sound or digital display screen from the distance of the tailstock.
Supersonic sounding main frame MCU emission super sonic also receives, and carries out corresponding computing (range finding), sends slave then to and handles, and sends the TFT-LCD display circuit again to and shows and sounding.After hand radar starts, there is the circuit hardware initialization to detect automatically, main frame drives detector for the amplifying circuit signal that boosts, survey the another one probe after having surveyed again for one, will misregistration information if probe does not connect, can send prompting to the driver by LED lamp and buzzer phone simultaneously, take corresponding repair action.If it is just no problem that probe connects, the signal that send 40KHZ that starts is gone out and is received, and by amplifying signal circuit and shaping circuit the data owner chance is carried out computing and judgement, points out the driver to take corresponding actions according to obstacle distance.Main frame sends command request to probe, and it sends signal, the booster circuit startup is also called time delay subroutine, when sending signal during for high level, signal goes out and waits for echo, be the number microsecond delay time, when signal is the ground level triggering, be several milliseconds delay time, and return after will sending 20 initial values again.If probe pulse after received signal is high level then carries out return signal and handle, send the shaping circuit adjustment after by amplifying circuit signal being amplified, after the final CPU computing corresponding action is arranged.If not high level then register corresponding add to delay time in the lump 20 seconds continue to wait by the time pulse is a high level, its objective is allowing probe receive and sending signal and do not conflict that an action can only be arranged sometime, send or reception.According to extrapolating the basic principle that corresponding obstacle distance is ultrasonic ranging delay time, CPU can judge according to feedback time, two probes seldom can be identical to the distance of same obstacle, and CPU carries out operational analysis according to the short probe data of time feedback.
The TFT-LCD display control circuit has adopted microcontroller P87LPC921F, and the HT1621 chip that is used to drive, and is used for the AP89042 chip of voice reporting distance, and audio frequency amplifies employing MC34119 chip.The tailstock top of photograph (generally be list) is adorned a camera, and when automobile hung up reverse gear, Reverse Sensor started automatically, and the image that the afterbody camera is taken is presented on the display screen before the car by the video connection lead.
Utilize the timer/counter of P87LPC921F to be easy to realize the electronic clock function, on read-out, show then.
Digital compass (as shown in Figure 3): utilize two-dimensional magnetic field sensor KMZ52 (chip model), can make the digital compass of surveying the geomagnetic field.It adopts the magnetoresistive technologies of magnetic field sensor, and is offset with the turnover technology erasure signal, and eliminates the sensitivity skew of temperature with the magnetic feedback technique.The X-axis of corresponding two dimensional surface is distinguished, Y-axis by the magnetic field sensor of two quadratures of company in KMZ25 inside.The principle of magnetic field sensor is a magnetic-type structure of utilizing magnetic resistance to form, can change the externally resistance coefficient in the magnetic field of electromagnetism material like this.So that after loading the upset electric signal on the flip coils of magnetic field sensor, enable to produce magnetic field than changing.Because the magnetic field of this variation can be caused magnetic resistance change rate and be converted it into the differential voltage output of variation, so just can be according to magnetic field size direct ratio and output differential voltage principle, read cooresponding two axis signals respectively, handle to obtain corresponding orientation angle then, and on read-out, show.
Electronic thermometer: utilize 1-wire digital temperature sensor DS18B20, can be directly changed into serial data signal to temperature and handle, on read-out, show then for micro controller system.Information of reading from DS18B20 or the information that writes DS18B20 only need a root port line, and this port lines can be simultaneously to the DS18B20 power supply, thereby need not additional power supply.Can realize multipoint temperature measuring as needs.Therefore utilize this performance-oriented digital temperature sensor, realize that temperature survey is very convenient.
In sum, the utility model adopts the structure design of simplification, has solved following technical matters:
1.--range finding of-----Embedded Ultrasonic ripple makes and parks range finding accurately in ultrasonic ranging.
2.--scene image behind----shooting car does not intuitively have the dead angle in backsight shooting.
3. digital compass--the accurate direction indication of----applying a magnetic field sensor.
4.------application of temperature sensor accurately shows the car internal and external temperature to electronic thermometer.
5. the clock display module that utilizes microcontroller clock internal circuit to generate.
The utility model has been realized digital compass, electronic thermometer and clock function by realized the combination of reversing range finding and video monitor function in a Circuits System on the basis of visual reversing.Have characteristics such as easy for installation, economical and practical, safe and reliable.And combine with back mirror, not only dwindled the volume of system, also greatly reduce the cost of system.
The above angle from specific embodiment discloses further to technology contents of the present utility model; its purpose is to allow everybody be easier to understand technology contents of the present utility model; but do not represent embodiment of the present utility model and rights protection to be confined to this, rights protection scope of the present utility model should be as the criterion in claims of the present utility model.
Claims (7)
1. video radar backing system with compass, its feature comprises read-out, the display control circuit that connects with read-out, the slave MCU that connects with display control circuit, the main frame MCU and the A/D convertor circuit that connect with slave MCU, and the input end of A/D convertor circuit is connected with temperature sensor and magnetic field sensor; The input end of main frame MCU is connected with ultrasonic probe, ultrasonic probe is located at automobile tail, also comprise the camera of being located at automobile tail, described camera connects with display control circuit, display control circuit also is connected with a loud speaker, and described read-out is provided with compass display module, temperature display module and clock display module.
2. a kind of video radar backing system according to claim 1 with compass, its feature also comprises a housing, is provided with aforesaid display control circuit, slave MCU, main frame MCU and A/D convertor circuit in the housing, housing is provided with aforesaid read-out.
3. a kind of video radar backing system with compass according to claim 2 is characterized in that described read-out is a LCD display; Described ultrasonic probe is provided with two at least.
4. a kind of video radar backing system with compass according to claim 3, its feature also comprise the memory device that is used for image pickup signal behind the storage cart, and described memory device connects with display control circuit.
5. a kind of video radar backing system according to claim 4 with compass, it is characterized in that described housing is a room mirror housing, described back-mirror housing front end face also is provided with a light deflector portion, be provided with a hyalomere in the middle of the described light deflector portion, this hyalomere is provided with aforesaid LCD display.
6. a kind of video radar backing system with compass according to claim 2 is characterized in that described magnetic field sensor is located in the housing.
7. a kind of video radar backing system with compass according to claim 2 is characterized in that described temperature sensor comprises the temperature sensor temperature sensor of being located in the car outer with being located at car.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201474823U CN201313533Y (en) | 2008-09-18 | 2008-09-18 | Visual radar reversing system with compass |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201474823U CN201313533Y (en) | 2008-09-18 | 2008-09-18 | Visual radar reversing system with compass |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201313533Y true CN201313533Y (en) | 2009-09-23 |
Family
ID=41125321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201474823U Expired - Fee Related CN201313533Y (en) | 2008-09-18 | 2008-09-18 | Visual radar reversing system with compass |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201313533Y (en) |
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2008
- 2008-09-18 CN CNU2008201474823U patent/CN201313533Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090923 Termination date: 20100918 |