CN201247325Y - Wireless sensor network device for detecting mobile object based on microwave radar technology - Google Patents
Wireless sensor network device for detecting mobile object based on microwave radar technology Download PDFInfo
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- CN201247325Y CN201247325Y CNU2008200837425U CN200820083742U CN201247325Y CN 201247325 Y CN201247325 Y CN 201247325Y CN U2008200837425 U CNU2008200837425 U CN U2008200837425U CN 200820083742 U CN200820083742 U CN 200820083742U CN 201247325 Y CN201247325 Y CN 201247325Y
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Abstract
The utility model belongs to the field of wireless sensor networks, in particular to a wireless sensor network device which utilizes a microwave radar sensor module to detect moving objects and comprises a microwave radar sensing module, a filtering noise reduction unit, a differential amplification unit, a level conversion unit, a control unit and a radio frequency unit. The wireless sensor network device detects radio frequency signals of the moving objects through the radar sensing module, the speed of the moving objects is detected and calculated in real time, and date is sent to a base station through a communication mode of wireless transmission to carry out application treatment. The wireless sensor network device is characterized in that the device is not affected by environment conditions and weather conditions, does not need frequent maintenance, and has high detection sensitivity, wide detecting angles, far detecting distance, convenient installation and the like, and the device is applied in various indoor or outdoor occasions, and has wide application prospect in the monitoring or security-monitoring field.
Description
Technical field
The utility model belongs to the wireless sensor network field, specifically is a kind of wireless sensor network apparatus of surveying mobile object based on the microwave radar technology.
Background technology
The moving Object Detection technology is mainly used and monitoring and antitheft field, moving Object Detection mainly realizes by infrared means at present, but this method is subjected to the influence of weather environment and the interference of shelter easily, extraneous thermal source also can interfere with normal detection, and the outfield installed device accumulates over a long period because the effect of dust needs artificial clean and maintenance, and infrared technique is surveyed the inherent shortcoming of mobile object and brought inconvenience for this The Application of Technology.
The utility model is based on the wireless sensor network apparatus that the microwave radar technology is surveyed mobile object, and it has the environmental aspect of not being subjected to and weather condition influences, need not frequent maintenance, detection sensitivity height, surveys angular width, detection range is far away and advantage easily is installed.
Summary of the invention
The purpose of this utility model provides a kind of wireless sensor network apparatus and implementation method of surveying mobile object based on the microwave radar technology.
To be solved in the utility model is that existing mobile object detection method is influenced greatly by environmental interference and weather condition, needs are often safeguarded, search angle is narrow, detection range is near and problems such as loaded down with trivial details are installed.
For realizing above purpose, the utility model is made up of microwave radar sensing module, filtering noise reduction unit, difference amplifying unit, level conversion unit, control module and radio frequency unit.The microwave radar sensor assembly connects and the filtering noise reduction unit, and the filtering noise reduction unit is connected with the difference amplifying unit, and the difference amplifying unit connects and is connected with level conversion unit, and level conversion unit is connected with control module, and control module is connected in radio frequency unit.
The microwave radar sensor assembly is used for gathering in real time the frequency change of mobile object and output correspondent voltage signal;
The filtering noise reduction unit is used for the noise of elimination microwave radar sensor assembly output signal, improves signal to noise ratio (S/N ratio);
The difference amplifying unit is used for the output of microwave radar module is fully amplified, and the signal after amplifying is sent into level conversion unit;
The conversion of signals that level conversion unit will come from the difference amplifying unit becomes control module acceptable digital signal;
Control module draws whether have mobile object and translational speed through certain algorithm process;
The initialization of control module control radio frequency unit transmits data to radio frequency unit, receives the data from radio frequency unit;
Control module is also coordinated effective operation of total system, control system power consumption, extension fixture working time;
Radio frequency unit and base station are set up radio communication and are got in touch, and carry out exchanges data.
Device of the present utility model is by the pre-service to microwave radar sensor assembly output signal, adopt corresponding calculation method, real-time detection goes out whether to exist mobile object and speed thereof, and by the communication mode of wireless transmission data is sent to the base station to carry out applied analysis.
The utlity model has and be not subjected to environmental aspect and weather condition to influence, need not frequent maintenance, detection sensitivity height, survey angular width, detection range is far away and advantages such as convenient are installed, be applicable to indoor or outdoor multiple occasion, have broad application prospects in monitoring or safety-security area.
Description of drawings
Fig. 1 is the utility model block diagram.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
As shown in the figure, the utility model is made up of microwave radar sensing module, filtering noise reduction unit, difference amplifying unit, level conversion unit, control module and radio frequency unit.
The microwave radar sensor assembly connects and the filtering noise reduction unit, and the filtering noise reduction unit is connected with the difference amplifying unit, and the difference amplifying unit connects and is connected with level conversion unit, and level conversion unit is connected with control module, and control module is connected in radio frequency unit.
The microwave radar sensor assembly is used for gathering in real time the frequency change of mobile object and output correspondent voltage signal; The filtering noise reduction unit is used for the noise of elimination microwave radar sensor assembly output signal, improves signal to noise ratio (S/N ratio); The difference amplifying unit is used for the output of microwave radar module is fully amplified, and the signal after amplifying is sent into level conversion unit; The conversion of signals that level conversion unit will come from the difference amplifying unit becomes control module acceptable digital signal; Control module draws whether have mobile object and translational speed through certain algorithm process; The initialization of control module control radio frequency unit transmits data to radio frequency unit, receives the data from radio frequency unit; Control module is also coordinated effective operation of total system, control system power consumption, extension fixture working time; Radio frequency unit and base station are set up radio communication and are got in touch, and carry out exchanges data.
Device of the present utility model is by the pre-service to microwave radar sensor assembly output signal, adopt corresponding calculation method, real-time detection goes out whether to exist mobile object and speed thereof, and by the communication mode of wireless transmission data is sent to the base station to carry out applied analysis.
The principle that the utility model is surveyed mobile object is: this device is installed near the zone that needs to survey, the microwave radar sensor assembly continues outside radiation frequency frequency electromagnetic waves, receive the extraneous electromagnetic wave that reflects simultaneously, as mobile object from search coverage through out-of-date, because there is certain translational speed in mobile object, according to Doppler effect, be moved object reflection and can be changed by the wave frequency that the microwave radar sensor assembly receives, the microwave radar sensor is converted into simulating signal output with this frequency change, after the filtering noise reduction unit, amplify by the difference amplifying unit, and change into the digital signal Input Control Element by level conversion unit, control module passes through corresponding calculation method, calculate object and whether move and translational speed, then the result is transferred to the base station via radio frequency unit by wireless mode.
Work for whole device is overlapped under the perfect low-power consumption mode one, control module and radio frequency unit only are in normal mode of operation in of short duration detection time, and all the other times are in the super low-power consumption pattern, and the assurance system carries out work with minimum average power consumption.Switching between normal mode of operation and the super low-power consumption pattern is coordinated to realize by control module.
Radio frequency unit frequency of operation in the utility model is 433MHz, 255 of channel numbers, the message transmission rate of radio frequency unit and adjustable power, peak transfer rate 500kbps, maximum transmission power 10dBm, radio frequency unit maximum transmission power 10dBm, the indoor laying maximum wireless of radio frequency unit transmission range is 100 meters.
Claims (2)
1, a kind ofly surveys the wireless sensor network apparatus of mobile object, it is characterized in that it is made up of microwave radar sensing module, filtering noise reduction unit, difference amplifying unit, level conversion unit, control module and radio frequency unit based on the microwave radar technology; The microwave radar sensor assembly is connected in the filtering noise reduction unit, and the filtering noise reduction unit is connected in the difference amplifying unit, and the difference amplifying unit is connected in control module by level conversion unit, and control module and radio frequency unit interconnect;
The microwave radar sensor assembly is used for gathering in real time the frequency change of mobile object and output correspondent voltage signal;
The filtering noise reduction unit is used for the noise of elimination microwave radar sensor assembly output signal, improves signal to noise ratio (S/N ratio);
The difference amplifying unit is used for the output of microwave radar module is fully amplified, and the signal after amplifying is sent into level conversion unit;
The conversion of signals that level conversion unit will come from the difference amplifying unit becomes control module acceptable digital signal;
Control module draws whether have mobile object and translational speed through certain algorithm process;
The initialization of control module control radio frequency unit transmits data to radio frequency unit, receives the data from radio frequency unit;
Control module is also coordinated effective operation of total system, control system power consumption, extension fixture working time;
Radio frequency unit and base station are set up radio communication and are got in touch, and carry out exchanges data.
2, a kind of wireless sensor network apparatus of surveying mobile object based on the microwave radar Detection Techniques according to claim 1, it is characterized in that the radio frequency unit frequency of operation is 433MHz, 255 of channel numbers, the message transmission rate of radio frequency unit and adjustable power, peak transfer rate 500kbps, maximum transmission power 10dBm, the indoor laying maximum wireless of radio frequency unit transmission range is 100 meters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200837425U CN201247325Y (en) | 2008-03-05 | 2008-03-05 | Wireless sensor network device for detecting mobile object based on microwave radar technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200837425U CN201247325Y (en) | 2008-03-05 | 2008-03-05 | Wireless sensor network device for detecting mobile object based on microwave radar technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201247325Y true CN201247325Y (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200837425U Expired - Lifetime CN201247325Y (en) | 2008-03-05 | 2008-03-05 | Wireless sensor network device for detecting mobile object based on microwave radar technology |
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| CN (1) | CN201247325Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8830116B2 (en) | 2011-12-07 | 2014-09-09 | Industrial Technology Research Institute | Radar wave sensing apparatus and method |
| CN104202080A (en) * | 2014-09-09 | 2014-12-10 | 安徽四创电子股份有限公司 | 60M radar data transmission device |
| CN107219503A (en) * | 2017-06-21 | 2017-09-29 | 西南大学 | Radar signal frequency estimating methods based on sensor network |
-
2008
- 2008-03-05 CN CNU2008200837425U patent/CN201247325Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8830116B2 (en) | 2011-12-07 | 2014-09-09 | Industrial Technology Research Institute | Radar wave sensing apparatus and method |
| CN104202080A (en) * | 2014-09-09 | 2014-12-10 | 安徽四创电子股份有限公司 | 60M radar data transmission device |
| CN107219503A (en) * | 2017-06-21 | 2017-09-29 | 西南大学 | Radar signal frequency estimating methods based on sensor network |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CAS JIAXING WIRELESS SENSOR NETWORK ENGINEERING CE Free format text: FORMER OWNER: CAS JIAXING CENTER MICROSYSTEMS INTITUTE BRANCH CENTER Effective date: 20100330 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 314000 FLOOR 4, TOWER A, JRC BUILDING,YATAI ROAD, NANHU DISTRICT, JIAXING CITY, ZHEJIANG PROVINCE TO: 314000 BUILDING 2, 1 ZONE, NO.778, YATAI ROAD, NANHU DISTRICT, JIAXING CITY, ZHEJIANG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100330 Address after: 2 Building No. 1, No. 778 Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing, 314000 Patentee after: Jiaxing Wireless Sensor Network Engineering Center, Chinese Academy of Sciences Address before: Four, A building, block JRC, Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing 314000, China Patentee before: Microsystem Inst. Branch Center, Jiaxing Center, CAS |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090527 |