CN102338642A - Wireless vehicle speed sensing device and method - Google Patents
Wireless vehicle speed sensing device and method Download PDFInfo
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- CN102338642A CN102338642A CN2010102375418A CN201010237541A CN102338642A CN 102338642 A CN102338642 A CN 102338642A CN 2010102375418 A CN2010102375418 A CN 2010102375418A CN 201010237541 A CN201010237541 A CN 201010237541A CN 102338642 A CN102338642 A CN 102338642A
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Abstract
The invention discloses a wireless vehicle speed sensing device and method. The method is realized by the wireless vehicle speed sensing device, characterized in that: a sensor monitors wheels to acquire speed information; a first processor reads the speed information from the sensor; a first RF module acquires the speed information from the first processor and sends out the speed information in RF data signals; a second RF module receives the speed information, the second RF module sends out the RF power signals, an electromagnetic induction coil generates induced electromotive force in the variation magnetic field formed by the RF power signals, and the induced electromotive force provides power supply to the first RF module, the first processor, and the sensor; a second processor acquires the speed information from the second RF module and calculates the speed and distance travelled; and a navigation system reads data of the speed and distance travelled from the second processor.
Description
[technical field]
The present invention relates to a kind of speed sensing device and method, particularly a kind of wireless speed sensing device and method.
[background technology]
Now; In the application of onboard navigation system; When needs use the speed of a motor vehicle with the distance data, must speed sensing device be used wired mode to be connected to navigational system and need power supply be installed as speed sensing device, cost is higher relatively and make troubles to the installation of speed sensing device like this.
[summary of the invention]
Fundamental purpose of the present invention is to provide a kind of wireless connections onboard navigation system, wireless wireless speed sensing device and the method that power supply is provided.
For achieving the above object; A kind of wireless speed sensing device of the present invention, it is used for onboard navigation system, and said wireless speed sensing device comprises sensor, first processor, a RF module, the 2nd RF module, second processor; Said sensor monitors wheel obtains speed information; Said sensor is connected with first processor, and said first processor reads speed information from sensor, and said first processor is connected with a RF module; A said RF module is obtained said speed information and is sent with RF data signal from first processor, and a said RF module is provided with electromagnetic induction coil; Said the 2nd RF module receives the RF data signal that sends from a RF module; Said RF data signal is loaded with speed information; Said the 2nd RF module is sent rf power signal; Electromagnetic induction coil in the said RF module produces induction electromotive force in the formed variation magnetic field of said rf power signal; Said induction electromotive force is that a said RF module, first processor, sensor provide power supply, and said the 2nd RF module is connected with second processor, and said second processor obtains said speed information and calculates the speed of a motor vehicle and distance from the 2nd RF module.
A kind of wireless speed of a motor vehicle method for sensing of the present invention, its method realizes that through said wireless speed sensing device it comprises:
The sensor monitors wheel obtains speed information;
First processor reads speed information from sensor;
The one RF module is obtained said speed information and is sent with RF data signal from first processor;
The 2nd RF module receives speed information; Said the 2nd RF module is sent rf power signal; Said electromagnetic induction coil produces induction electromotive force in the formed variation magnetic field of said rf power signal, said induction electromotive force is that a said RF module, first processor, sensor provide power supply;
Second processor obtains said speed information and calculates the speed of a motor vehicle and distance from the 2nd RF module;
Navigational system reads the speed of a motor vehicle and distance data from said second processor.
Compared with prior art, a kind of wireless speed sensing device of the present invention adopts the wireless radiofrequency transmission technology to simplify the installation of speed sensing device and power supply is provided for a RF module, first processor, sensor with wireless mode.
[description of drawings]
Fig. 1 is the block scheme of wireless speed sensing device.
Fig. 2 is the process flow diagram of wireless speed of a motor vehicle method for sensing.
[embodiment]
See also Fig. 1; A kind of wireless speed sensing device of the present invention; It is used for onboard navigation system; So that onboard navigation system is obtained data such as the speed of a motor vehicle, distance, said wireless speed sensing device comprises sensor 1, first processor 2, a RF module 3, the 2nd RF module 4, second processor 5, and said sensor 1 is an angular-rate sensor; The speed information that said angular-rate sensor obtains is the angular velocity data signal of wheel; Said angular-rate sensor is connected with first processor 2, and said first processor 2 reads the angular velocity data signal from angular-rate sensor, and said first processor 2 is connected with a RF module 3; A said RF module 3 is obtained said angular velocity data signal and angle speed data-signal from first processor 2 and is modulated with RF data signal and send; Be provided with electromagnetic induction coil in the said RF module 3, said the 2nd RF module 4 receives said RF data signals and carries out demodulation and obtain the angular velocity data signal from a RF module 3, and said the 2nd RF module 4 is sent rf power signals; Electromagnetic induction coil in the said RF module 3 produces induction electromotive force in the formed variation magnetic field of rf power signal that said the 2nd RF module 4 is sent; Said induction electromotive force is that a said RF module 3, first processor 2, sensor 1 provide power supply, and said the 2nd RF module 4 is connected with second processor 5, said second processor 5 from the 2nd RF module 4 obtain said angular velocity data signal and according to the radius of wheel, exercise the Time Calculation speed of a motor vehicle and distance; Said navigational system 6 is connected with said second processor 5, and said navigational system 6 reads the speed of a motor vehicle and distance data from second processor 5.
A kind of wireless speed of a motor vehicle method for sensing of the present invention, its method realizes that through said wireless speed sensing device said wireless speed of a motor vehicle method for sensing comprises:
Step 100: sensor 1 monitoring wheel obtains speed information;
Step 101: first processor 2 reads speed information from sensor 1;
Step 102: a RF module 3 is obtained said speed information and is sent with RF data signal from first processor 2;
Step 103: the 2nd RF module 4 receives speed information; Said the 2nd RF module 4 is sent rf power signal; Said electromagnetic induction coil produces induction electromotive force in the formed variation magnetic field of said rf power signal, said induction electromotive force is that a said RF module 3, first processor 2, sensor 1 provide power supply;
Step 104: second processor 5 obtains said speed information and calculates the speed of a motor vehicle and distance from the 2nd RF module 4;
Step 105: navigational system 6 reads the speed of a motor vehicle and distance data from said second processor 5.
A kind of wireless speed sensing device of the present invention adopts the wireless radiofrequency transmission technology to simplify the installation of wireless speed sensing device and power supply is provided for a RF module 3, first processor 2, sensor 1 with wireless mode.
Claims (4)
1. wireless speed sensing device, it is used for onboard navigation system, it is characterized in that, and wireless speed sensing device comprises:
Sensor, said sensor monitors wheel obtains speed information;
First processor, said first processor is connected with sensor, and said first processor reads speed information from sensor;
The one RF module, a said RF module is connected with first processor, and a said RF module is obtained said speed information and with the RF data signal transmission, is provided with electromagnetic induction coil in the said RF module from first processor;
The 2nd RF module; Said the 2nd RF module receives the RF data signal that sends from a RF module; Said RF data signal is loaded with speed information; Said the 2nd RF module is sent rf power signal, and the electromagnetic induction coil in the said RF module produces induction electromotive force in the formed variation magnetic field of said frequency power signal, and said induction electromotive force is that a said RF module, first processor, sensor provide power supply;
Second processor, said second processor is connected with the 2nd RF module, and said second processor obtains said speed information and calculates the speed of a motor vehicle and distance from the 2nd RF module.
2. a kind of wireless speed of a motor vehicle method for sensing of the present invention, its method realizes that through said wireless speed sensing device it comprises:
Step (100): the sensor monitors wheel obtains speed information;
Step (101): first processor reads speed information from sensor;
Step (102): a RF module is obtained said speed information and is sent with RF data signal from first processor;
Step (103): the 2nd RF module receives speed information; Said the 2nd RF module is sent rf power signal; Said electromagnetic induction coil produces induction electromotive force in the formed variation magnetic field of said rf power signal, said induction electromotive force is that a said RF module, first processor, sensor provide power supply;
Step (104): second processor obtains said speed information and calculates the speed of a motor vehicle and distance from the 2nd RF module;
Step (105): navigational system reads the speed of a motor vehicle and distance data from said second processor.
3. according to the said wireless speed sensing device of claim 1, it is characterized in that said sensor is an angular-rate sensor.
4. according to the said wireless speed sensing device of claim 1, it is characterized in that said speed information is the angular velocity of wheel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102375418A CN102338642A (en) | 2010-07-27 | 2010-07-27 | Wireless vehicle speed sensing device and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102375418A CN102338642A (en) | 2010-07-27 | 2010-07-27 | Wireless vehicle speed sensing device and method |
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| CN102338642A true CN102338642A (en) | 2012-02-01 |
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| CN2010102375418A Pending CN102338642A (en) | 2010-07-27 | 2010-07-27 | Wireless vehicle speed sensing device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123914A (en) * | 2016-06-15 | 2016-11-16 | 浙江师范大学 | A kind of self-powered vehicle positioning is followed the tracks of and alarm device |
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| EP1542190A1 (en) * | 2002-09-09 | 2005-06-15 | Ntn Corporation | Wireless sensor system and bearing device having wireless sensor |
| US7075459B1 (en) * | 1999-02-22 | 2006-07-11 | Magellan Dis, Inc. | Vehicle speed sensor for navigation system |
| CN101324712A (en) * | 2007-06-11 | 2008-12-17 | 陈国平 | Traveling information display system |
| CN101634659A (en) * | 2008-07-23 | 2010-01-27 | 中国科学院自动化研究所 | Rotating speed or speed measuring device and detection method based on accelerometer |
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2010
- 2010-07-27 CN CN2010102375418A patent/CN102338642A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7075459B1 (en) * | 1999-02-22 | 2006-07-11 | Magellan Dis, Inc. | Vehicle speed sensor for navigation system |
| EP1542190A1 (en) * | 2002-09-09 | 2005-06-15 | Ntn Corporation | Wireless sensor system and bearing device having wireless sensor |
| CN101324712A (en) * | 2007-06-11 | 2008-12-17 | 陈国平 | Traveling information display system |
| CN101634659A (en) * | 2008-07-23 | 2010-01-27 | 中国科学院自动化研究所 | Rotating speed or speed measuring device and detection method based on accelerometer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106123914A (en) * | 2016-06-15 | 2016-11-16 | 浙江师范大学 | A kind of self-powered vehicle positioning is followed the tracks of and alarm device |
| CN106123914B (en) * | 2016-06-15 | 2018-06-01 | 浙江师范大学 | A kind of self-powered vehicle positioning tracking and warning device |
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Application publication date: 20120201 |