CN201886149U - Anti-collision detector for millimeter wave radar - Google Patents
Anti-collision detector for millimeter wave radar Download PDFInfo
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- CN201886149U CN201886149U CN2010206414737U CN201020641473U CN201886149U CN 201886149 U CN201886149 U CN 201886149U CN 2010206414737 U CN2010206414737 U CN 2010206414737U CN 201020641473 U CN201020641473 U CN 201020641473U CN 201886149 U CN201886149 U CN 201886149U
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Abstract
The utility model relates to an anti-collision detector for a millimeter wave radar. A waveform modulation voltage generated by a waveform generation module is output to a millimeter wave transceiving component, a millimeter wave frequency waveband transmission waveform generated by the millimeter wave transceiving component is radiated out by an antenna, a target reflected return wave is received by the antenna, the return wave is output into middle frequency beat signals in a down-variable frequency manner after passing through the millimeter wave transceiving component, a middle frequency preprocessing module conducts automatic gain control on the middle frequency beat signals, and output signals conduct sampling and analysis processing by a system control module and then are output to a display alarm module; a temperature control module conducts temperature monitoring to the device and is in two-way communication with the system control module; and the system control module is in communication and alarm with the outside by the display alarm module. The anti-collision detector has the functions of distance measurement, speed measurement and multiple targets recognition, can be applicable to various ground feature clutters and severe weather conditions as well as a great deal of dust interference at industrial site, and can be widely applied to the various fields of complicated industrial sites and car driving safety.
Description
Technical field
The utility model relates to the anticollision safety device in industry and the automobile industry, the crashproof sniffer of a kind of specifically millimetre-wave radar.
Background technology
Industry spot and automobile industry crashproof detection system commonly used is surveyed the surrounding environment of car body, sends before bumping and reports to the police or braking information, avoids colliding the various losses that cause.
In traditional crashproof detection system, usually adopt laser and ultrasonic radar to survey and obtain vehicle-periphery information, because the working environment of crashproof detection system is very complicated, the interference of atural object on every side, abominable meteorological condition and a large amount of dust of industry spot disturb, and all can seriously restrict the target detection ability of laser and ultrasound wave mode.
Millimeter wave be meant frequency at 30GHz to the electromagnetic wave between the 300GHz because it has advantages such as wavelength weak point, bandwidth, good directionality and penetration capacity are strong, application is arranged all in many aspects.The crashproof detection mode of millimetre-wave radar has overcome the shortcoming of rugged surroundings bad adaptability in laser and the ultrasonic radar detection mode.Utilize millimeter wave to have application at present, but, be further improved because stability, measuring accuracy, the conversion speed of system still can not adapt to the various abominable application that reach under the complex environment fully as industry and the crashproof sniffer of civilian traffic safety.
The utility model content
Still can not adapt to weak points such as various abominable and complex environments fully at the anticollision sniffer stability that exists in the prior art, measuring accuracy, conversion speed, it is fast that the technical problems to be solved in the utility model provides a kind of speed, precision height, good stability, the crashproof sniffer of adaptable millimetre-wave radar.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is:
The crashproof sniffer of the utility model millimetre-wave radar comprises antenna, the millimeter wave transceiving assembly, the intermediate frequency pretreatment module, waveform generation module, system control module, temperature control modules, display alarm module and power module, wherein, waveform generation module produces waveform modulated voltage and exports the millimeter wave transceiving assembly to, the millimeter wave transceiving assembly produces the millimeter wave frequency band transmitted waveform and goes out by aerial radiation, simultaneously by antenna receiving target reflection echo, down coversion output intermediate frequency Beat Signal behind the echo process millimeter wave transceiving assembly, the intermediate frequency pretreatment module is clapped signal to middle frequency difference and is carried out automatic gain control, output signal through system control module sample with analyzing and processing after export the display alarm module to; Temperature control modules carries out monitoring temperature to device, carries out both-way communication with system control module; System control module carries out communication and warning by the display alarm module and the external world.
Described intermediate frequency pretreatment module comprises prime amplifier, sensitivity frequency control circuit and automatic gain control circuit, wherein prime amplifier receives the echo intermediate frequency Beat Signal from the millimeter wave transceiving assembly, output amplified IF signal to the sensitivity frequency control circuit, sensitivity frequency control circuit output frequency gain control signal through automatic gain control circuit output amplitude gain control signal to system control module.
Described waveform generation module is realized by FPGA control, comprise clock source, frequency divider, address generator, wave memorizer, D/A converting unit, wherein frequency divider carries out the address clock signal that frequency division obtains with the clock in clock source and exports to address generator, address generator produces address signal and exports wave memorizer to, and the voltage modulation signal of Wave data signal required different wave of output system after the D/A converting unit is carried out D/A switch of wave memorizer output is to the millimeter wave transceiving assembly.
Described system control module comprises digital signal processing unit, PID temperature control unit, communication interface unit, system control module carries out communication by digital signal processing unit and intermediate frequency pretreatment module and is connected, carry out communication by PID temperature control unit and temperature control modules and be connected, carry out communication by communication interface unit and display alarm module and be connected.
Described digital signal processing unit adopts high speed digital signal processor DSP, is realized the processing and the PID temperature algorithm controls of data-signal by data acquisition control and probe algorithm.
Described communication interface unit is made up of USB, RS232, CAN various communication interfaces.
Described temperature control modules comprises A/D sampling unit, temperature sensor, heating arrangement and relay, wherein temperature sensor signal is delivered to the PID temperature control unit of system control module through the A/D converting unit, relay receives the control letter of PID temperature control unit output, and the contact of relay is located in the control loop of heating arrangement.
Described antenna adopts the planar microstrip antenna, and antenna adopts independent transmitting-receiving control mode.
The utlity model has following beneficial effect and advantage:
1. the utlity model has range finding, test the speed and the multiple goal recognition function, detection range is 1 meter to 150 meters, 0.15 meter of detection range precision, measuring speed precision 1 meter per second; Can adapt to a large amount of dust of various ground clutters, abominable meteorological condition and industry spot and disturb, can be widely used in the industry spot and the car steering security fields of various complexity.
2. the utility model adopts modular design, and antenna adopts the planar microstrip antenna, dual-mode antenna independently, and volume is little, and cost is low, and communication module is realized USB, RS232, CAN bus interface, satisfies multiple industry spot and running application.
3. the digital signal processing module in the utility model adopts the DSP core processor that the intermediate frequency echo data is carried out analyzing and processing, and then target is detected and classifies; Adopt the high-speed dsp processor that the sophisticated signal Processing Algorithm is finished with interior at 50ms, can satisfy vehicle target high-speed motion occasion.
4. waveform generation module in the utility model and intermediate frequency are gathered pretreatment module, adopt the fpga core processor, utilize the high speed fpga chip to drive high precision DA chip, produce required various pressure regulation and the FM signal of millimeter wave front end VCO assembly; Utilize high speed fpga chip interface high-precision A chip, gather millimetre-wave radar intermediate frequency Beat Signal in real time, finish preprocessing functions such as signal filtering simultaneously.
5. the utility model is to make the millimetre-wave radar sniffer have farther investigative range, the dynamic range that the increase system surveys, the intermediate frequency pretreatment module adopts sensitivity frequency control SFC circuit, Amplifier Gain is realized control as the function of frequency, by the AGC automatic gain control circuit intermediate-freuqncy signal output amplitude is controlled in the 2V at last, makes the system dynamics scope reach 80 decibels.
6. the temperature control modules in the utility model adopts temperature sensors of high precision, utilizes the PID temperature control algorithm to make millimeter wave transceiving front end and VCO assembly be in temperature constant state all the time, has guaranteed radar detection result's precision and stability.
Description of drawings
Fig. 1 is the utility model one-piece construction synoptic diagram;
Fig. 2 is a millimeter wave transceiving modular construction synoptic diagram in the utility model;
Fig. 3 is a system control module inner structure synoptic diagram in the utility model;
Fig. 4 is the intermediate frequency pretreatment module principle schematic in the utility model;
Fig. 5 is a waveform generation module inner structure synoptic diagram in the utility model;
Fig. 6 is a temperature control modules inner structure synoptic diagram in the utility model.
Embodiment
Below in conjunction with drawings and Examples using method of the present utility model is described in further detail.
As shown in Figure 1, be the utility model one-piece construction synoptic diagram.The utility model comprises antenna 1, millimeter wave transceiving assembly 2, intermediate frequency pretreatment module 3, waveform generation module 4, system control module 5, temperature control modules 6, display alarm module 7 and power module 8.Wherein, antenna 1 is by receiving microstrip antenna and launching microstrip antenna and form, waveform generation module 4 produces waveform modulated voltage and exports millimeter wave transceiving assembly 2 to, millimeter wave transceiving assembly 2 produces the millimeter wave frequency band transmitted waveform and radiate by antenna 1, simultaneously by antenna 1 receiving target reflection echo, echo is through millimeter wave transceiving assembly 2 down coversions output intermediate frequency Beat Signal, 3 pairs of middle frequency differences of intermediate frequency pretreatment module are clapped signal and are carried out automatic gain control, output signal is carried out intermediate frequency data sampling analysis and processing through system control module 5,6 pairs of devices of temperature control modules carry out monitoring temperature, and system control module 5 carries out communication and warning by display alarm module 7 with the external world.
As shown in Figure 2, be the utility model transmitting-receiving subassembly structural representation, wherein waveform generation module 4 generation voltages and adjustable triangular wave or sawtooth signal of cycle input to voltage controlled oscillator 21 input ends in the millimeter wave transceiving assembly 2, the frequency part that voltage controlled oscillator VCO produces outwards radiate through the transmitting terminal that internal power amplifier 23 exports antenna 1 to, another part is coupled to frequency mixer 25 as local oscillation signal through directional coupler 22, the receiving end receiving target echoed signal of antenna 1 is carried out mixing with local oscillator after inner low noise amplifier 24 amplifies, output intermediate frequency Beat Signal after the mixing.
As shown in Figure 3, be the utility model system control module inner structure synoptic diagram, wherein system control module 5 mainly comprises, digital signal processing unit 51, PID temperature control unit 52, communication interface unit 53, wherein, intermediate frequency pretreatment module 3 output intermediate frequency Beat Signal to digital signal processing units 51 carry out Digital Signal Analysis and Processing, digital signal processing unit 51 results export display alarm module 7 to by communication interface unit 53,52 pairs of temperature control modules data acquisitions of PID temperature control unit and control.
As shown in Figure 4, be the utility model intermediate frequency pretreatment module principle schematic, intermediate frequency pretreatment module 3 mainly comprises three parts, preamplifier circuit 31, SFC circuit 32 is controlled in sensitivity automatically, automatic gain control circuit 33, wherein, the intermediate frequency Beat Signal at first inputs to the gain amplification that preamplifier circuit 31 carries out 30dB, for increasing the system dynamics scope, making signal after the amplification control 32 pairs of far-end high frequencies of SFC circuit echoed signal automatically through sensitivity amplifies, signal after the amplification is through automatic gain control agc circuit 33, output signal is controlled in AD amplitude of samples scope ± 2V, is convenient to the sampling analysis that data processing module carries out data.
As shown in Figure 5, be waveform generating unit structural representation in the utility model, signal controlling processing module 4 is made up of the fpga logic control module, mainly comprises clock source 41, frequency divider 42, address generator 43, wave memorizer 44 and D/A converting unit 45.Wherein frequency divider 42 carries out frequency division with the clock in clock source 41 and obtains address clock signal, export to address generator 43, produce address signal, address generator 43 exports address signal to wave memorizer 44 again, the voltage modulation signal of the Wave data signal of the output of wave memorizer 44 required different wave of output system after D/A converting unit 45 is carried out D/A switch
As shown in Figure 6, be temperature control modules synoptic diagram in the utility model, precision for the detection of raising system, need to guarantee that the millimeter wave assembly is in temperature constant state, thermostatic control realizes by temperature control modules 6, on the device outer wall accurate temperature sensor 61 has been installed, temperature information sends the 2nd A/D converting unit 62 to voltage form, digital signal processing module 5 obtains current temperature information, drive 64 pairs of devices of relay 63 control heating arrangements by PID temperature control unit 52 and heat, thereby realized the closed-loop control device temperature.Described temperature control modules 6 is sampled to the device outside wall temperature with timer interrupt mode by the DSP 5509A of digital signal processing module 5 inside, and judgement also adopts pid algorithm that device is carried out heated at constant temperature.
Described FPGA adopts Altera Cyclone II chip, chip internal processor adopting high-speed parallel structure, can guarantee that each units synchronization realizes described function fast, described digital signal processing module 5 adopts the high speed digital signal processor TMS320C5509A of TI company, this chip has the dominant frequency of 200MHz, satisfies the real-time processing capacity of signal.The embedded RAM of Cyclone II chip can do RAM operation of double-port, is easy to the dma operation flow process that is configured to rattle, thereby realizes and the high-speed data exchange of DSP 5509A bus, has guaranteed the enforcement of DSP+FPGA scheme.
Claims (8)
1. crashproof sniffer of millimetre-wave radar, it is characterized in that comprising: antenna (1), millimeter wave transceiving assembly (2), intermediate frequency pretreatment module (3), waveform generation module (4), system control module (5), temperature control modules (6), display alarm module (7) and power module (8), wherein, waveform generation module (4) produces waveform modulated voltage and exports millimeter wave transceiving assembly (2) to, millimeter wave transceiving assembly (2) produces the millimeter wave frequency band transmitted waveform and radiate by antenna (1), simultaneously by antenna (1) receiving target reflection echo, echo is through millimeter wave transceiving assembly (2) back down coversion output intermediate frequency Beat Signal, intermediate frequency pretreatment module (3) is clapped signal to middle frequency difference and is carried out automatic gain control, output signal through system control module (5) sample with analyzing and processing after export display alarm module (7) to; Temperature control modules (6) carries out monitoring temperature to device, carries out both-way communication with system control module (5); System control module (5) carries out communication and warning by display alarm module (7) with the external world.
2. by the crashproof sniffer of the described a kind of millimetre-wave radar of claim 1, it is characterized in that:
Described intermediate frequency pretreatment module (3) comprises prime amplifier (31), sensitivity frequency control circuit (32) and automatic gain control circuit (33), wherein prime amplifier (31) receives the echo intermediate frequency Beat Signal from millimeter wave transceiving assembly (2), output amplified IF signal to sensitivity frequency control circuit (32), sensitivity frequency control circuit (32) output frequency gain control signal through automatic gain control circuit (33) output amplitude gain control signal to system control module (5).
3. by the crashproof sniffer of the described a kind of millimetre-wave radar of claim 1, it is characterized in that:
Described waveform generation module (4) is realized by FPGA control, comprise clock source (41), frequency divider (42), address generator (43), wave memorizer (44), D/A converting unit (45), wherein frequency divider (42) carries out the address clock signal that frequency division obtains with the clock of clock source (41) and exports to address generator (43), address generator (43) produces address signal and exports wave memorizer (44) to, and the voltage modulation signal of Wave data signal required different wave of output system after D/A converting unit (45) is carried out D/A switch of wave memorizer (44) output is to millimeter wave transceiving assembly (2).
4. by the crashproof sniffer of the described a kind of millimetre-wave radar of claim 1, it is characterized in that: described system control module (5) comprises digital signal processing unit (51), PID temperature control unit (52), communication interface unit (53), system control module (5) carries out communication by digital signal processing unit (51) with intermediate frequency pretreatment module (3) and is connected, carry out communication by PID temperature control unit (52) with temperature control modules (6) and be connected, carry out communication by communication interface unit (53) with display alarm module (7) and be connected.
5. by the crashproof sniffer of the described a kind of millimetre-wave radar of claim 4, it is characterized in that:
Described digital signal processing unit (51) adopts high speed digital signal processor DSP, is realized the processing and the PID temperature algorithm controls of data-signal by data acquisition control and probe algorithm.
6. by the crashproof sniffer of the described a kind of millimetre-wave radar of claim 4, it is characterized in that:
Described communication interface unit (53) is made up of USB, RS232, CAN various communication interfaces.
7. by the crashproof sniffer of the described a kind of millimetre-wave radar of claim 1, it is characterized in that:
Described temperature control modules (6) comprises A/D sampling unit (62), temperature sensor (61), heating arrangement (64) and relay (63), wherein temperature sensor (61) signal is delivered to the PID temperature control unit (52) of system control module (5) through A/D converting unit (62), relay (63) receives the control letter of PID temperature control unit (52) output, and the contact of relay (63) is located in the control loop of heating arrangement (64).
8. by the crashproof sniffer of the described a kind of millimetre-wave radar of claim 1, it is characterized in that: described antenna (1) adopts the planar microstrip antenna, and antenna adopts independent transmitting-receiving control mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206414737U CN201886149U (en) | 2010-12-05 | 2010-12-05 | Anti-collision detector for millimeter wave radar |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206414737U CN201886149U (en) | 2010-12-05 | 2010-12-05 | Anti-collision detector for millimeter wave radar |
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| CN201886149U true CN201886149U (en) | 2011-06-29 |
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| CN2010206414737U Expired - Fee Related CN201886149U (en) | 2010-12-05 | 2010-12-05 | Anti-collision detector for millimeter wave radar |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102435981A (en) * | 2011-12-06 | 2012-05-02 | 北京理工大学 | 77GHz millimeter wave radar transmit-receive device for automobile collision resistance |
| CN102486537A (en) * | 2010-12-05 | 2012-06-06 | 中国科学院沈阳自动化研究所 | Millimeter wave radar anticollision detection apparatus |
| CN102495409A (en) * | 2011-11-25 | 2012-06-13 | 金庆江 | Speed checking device for vehicles |
| CN102621551A (en) * | 2012-04-12 | 2012-08-01 | 朱泽睿 | 77GHz millimeter wave radio frequency device and using method thereof |
| CN103207395A (en) * | 2013-03-26 | 2013-07-17 | 南京理工大学 | Driving anti-collision radar device for automobile |
| CN103258400A (en) * | 2013-04-22 | 2013-08-21 | 常州工学院 | Millimeter wave wireless sensing perimeter anti-invasion system and method thereof |
| CN105182323A (en) * | 2015-09-15 | 2015-12-23 | 奇瑞汽车股份有限公司 | FMCW radar ranging system |
| CN106314428A (en) * | 2016-09-14 | 2017-01-11 | 中国科学院微电子研究所 | Collision avoidance system, collision avoidance method and motor vehicle |
-
2010
- 2010-12-05 CN CN2010206414737U patent/CN201886149U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102486537A (en) * | 2010-12-05 | 2012-06-06 | 中国科学院沈阳自动化研究所 | Millimeter wave radar anticollision detection apparatus |
| CN102495409A (en) * | 2011-11-25 | 2012-06-13 | 金庆江 | Speed checking device for vehicles |
| CN102495409B (en) * | 2011-11-25 | 2013-04-24 | 金庆江 | Speed checking device for vehicles |
| CN102435981A (en) * | 2011-12-06 | 2012-05-02 | 北京理工大学 | 77GHz millimeter wave radar transmit-receive device for automobile collision resistance |
| CN102435981B (en) * | 2011-12-06 | 2014-01-29 | 北京理工大学 | 77GHz millimeter wave radar transmit-receive device for automobile collision resistance |
| CN102621551A (en) * | 2012-04-12 | 2012-08-01 | 朱泽睿 | 77GHz millimeter wave radio frequency device and using method thereof |
| CN103207395A (en) * | 2013-03-26 | 2013-07-17 | 南京理工大学 | Driving anti-collision radar device for automobile |
| CN103258400A (en) * | 2013-04-22 | 2013-08-21 | 常州工学院 | Millimeter wave wireless sensing perimeter anti-invasion system and method thereof |
| CN103258400B (en) * | 2013-04-22 | 2016-08-10 | 常州工学院 | Millimeter wave wireless sensing periphery intrusion preventing method |
| CN105182323A (en) * | 2015-09-15 | 2015-12-23 | 奇瑞汽车股份有限公司 | FMCW radar ranging system |
| CN106314428A (en) * | 2016-09-14 | 2017-01-11 | 中国科学院微电子研究所 | Collision avoidance system, collision avoidance method and motor vehicle |
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Legal Events
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| 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: 20110629 Termination date: 20141205 |
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| EXPY | Termination of patent right or utility model |