CN203551105U - Accelerometer wireless network node module for vibration detection - Google Patents
Accelerometer wireless network node module for vibration detection Download PDFInfo
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- CN203551105U CN203551105U CN201320715020.8U CN201320715020U CN203551105U CN 203551105 U CN203551105 U CN 203551105U CN 201320715020 U CN201320715020 U CN 201320715020U CN 203551105 U CN203551105 U CN 203551105U
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Abstract
The utility model discloses an accelerometer wireless network node module for vibration detection. The accelerometer wireless network node module comprises a sending module and a receiving module. The sending module comprises a power supply circuit, a sensor circuit and a single-chip microcomputer, wherein the power supply circuit is respectively connected with the sensor circuit and the single-chip microcomputer, and the sensor circuit is connected with the single-chip microcomputer. A sending end also comprises a radio frequency circuit. The radio frequency circuit is respectively connected with the power supply circuit and the single-chip microcomputer. The sensor circuit employs an ADXL202 double-shaft accelerometer. According to the utility model, an accelerometer is employed for measuring small angle inclination and vibration of an automobile or a bridge and emitting wireless signals through the radio frequency circuit, the detection is sensitive, the transmission is convenient, and the power consumption is quite low.
Description
Technical field
The utility model relates to a kind of acceleration transducer wireless network node module for vibration detection, belongs to antitheft or bridge measurement and control area.
Background technology
Along with social development, automobile becomes people's important vehicles of going on a journey, and automobile antitheft becomes the focus that people pay close attention to day by day.At present, automotive theft proof system is mainly to rely on car door lock, and lawless person tends to commit a crime when people is secluded less, or even directly with trailer, automobile is dragged away, makes car owner hard to guard against.
Except aspect automobile burglar, in bridge security field, the detection of bridge vibration is an important indicator weighing bridge security coefficient, the speed of a motor vehicle is smaller to the vibration effect of bridge, and flatness is very large to the vibration effect of bridge, pavement grade is lower, and bridge vibration Shaoxing opera is strong.Therefore, the vibration detection for bridge is considerable.The bridge vibration using at present detects that to have quartz crystal temperature frequency sensor, the advantage of this acceleration transducer be good to temperature, vibration, dynamic response characteristic.But his shortcoming has much also, serviceable life, the short series of problems that waits appeared in the engineering of bridge.
Utility model content
In order to solve the antitheft problem with bridge structure health context of detection of orthodox car, the utility model aims to provide a kind of acceleration transducer wireless network node module for vibration detection.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is:
A kind of acceleration transducer wireless network node module for vibration detection, comprise sending module and receiver module, described sending module comprises power circuit, sensor circuit and single-chip microcomputer, described power circuit is connecting sensor circuit and single-chip microcomputer respectively, sensor circuit connects single-chip microcomputer, it is characterized in that: described transmitting terminal also comprises radio circuit, radio circuit connects respectively power circuit and single-chip microcomputer; Described sensor circuit adopts ADXL202 double-axel acceleration sensor.
Wherein, above-mentioned single-chip microcomputer adopts C8051F912 single-chip microcomputer, and radio circuit comprises AT86RF212 radio frequency chip, balanced-to-unblanced transformer, low-pass filter and the antenna connecting successively, and AT86RF212 radio frequency chip connects single-chip microcomputer.
Wherein, the P0.1 mouth of above-mentioned C8051F912 single-chip microcomputer, P1.0 mouth, P1.1 mouth, P1.2 mouth, P1.3 mouth, P1.4 mouth and P1.5 mouth are connected with IRQ end, SCLK end, MISO end, MOSI end, SEL end ,/RST end and the SLP_TR end of AT86RF212 radio frequency chip respectively; The P0.6 mouth of C8051F912 single-chip microcomputer and P0.7 mouth are connected respectively Xout and the Yout end of ADXL202 double-axel acceleration sensor, and P0.6 mouth and P0.7 mouth are configured to acquisition mode.
Adopt after technique scheme the beneficial effect bringing:
(1) the ADXL202 double-axel acceleration sensor that the utility model adopts can be measured dynamic within the scope of 0～5kHz, ± 2g or static acceleration.The measurement of acceleration can be for vibration detection, and utilizes static acceleration of gravity as input vector, just can determine the direction in space of object.If low-angle inclination or vibration occur automobile, just acceleration transducer can monitor, and send signal to single-chip microcomputer, then by radio circuit wireless signal emission, inform that car owner's automobile has extremely, has so just improved the security of automobile greatly;
(2) the utility model uses wireless sensor technology, adopts wireless transmission, makes the monitoring of object conveniently, and security improves; Use dry cell power supply, reduce again loaded down with trivial details that wiring brings, saved to a certain extent cost; Adopt the processor of proposing low-power consumption simultaneously, reduced node power consumption.
Accompanying drawing explanation
Fig. 1 is system architecture diagram of the present utility model.
Fig. 2 is the physical circuit figure of sending module of the present utility model.
Label declaration: U1---low-pass filter; U2---balanced-to-unblanced transformer; P1---antenna.
Embodiment
Below with reference to accompanying drawing, the technical solution of the utility model is elaborated.
System architecture diagram of the present utility model as shown in Figure 1, comprise sending module and receiver module, described sending module comprises power circuit, sensor circuit and single-chip microcomputer, described power circuit is connecting sensor circuit and single-chip microcomputer respectively, sensor circuit connects single-chip microcomputer, it is characterized in that: described transmitting terminal also comprises radio circuit, radio circuit connects respectively power circuit and single-chip microcomputer; Described sensor circuit adopts ADXL202 double-axel acceleration sensor.Two pulse width signal output terminal Xout of ADXL202 double-axel acceleration sensor and the dutycycle of Yout output signal are directly proportional to X-direction, Y direction acceleration respectively.Single-chip microcomputer adopts C8051F912 single-chip microcomputer, and radio circuit comprises AT86RF212 radio frequency chip, balanced-to-unblanced transformer, low-pass filter and the antenna connecting successively, and AT86RF212 radio frequency chip connects single-chip microcomputer.The P0.1 mouth of C8051F912 single-chip microcomputer, P1.0 mouth, P1.1 mouth, P1.2 mouth, P1.3 mouth, P1.4 mouth and P1.5 mouth are connected with IRQ end, SCLK end, MISO end, MOSI end, SEL end ,/RST end and the SLP_TR end of AT86RF212 radio frequency chip respectively; The P0.6 mouth of C8051F912 single-chip microcomputer and P0.7 mouth are connected respectively Xout and the Yout end of ADXL202 double-axel acceleration sensor, and P0.6 mouth and P0.7 mouth are configured to acquisition mode.
In this example, adopt the physical circuit figure of sending module of the present utility model as shown in Figure 2.Sending module of the present utility model comprises power circuit, sensor circuit, single-chip microcomputer and radio circuit.Power circuit adopts 3 joint dry cell series aiding connections, the positive pole of diode D1 connects the negative pole of dry cell, the negative pole of diode D1 is by after capacitor C 1 filtering, one end is received the analog power input end VCC_SYS2 of C8051F912 single-chip microcomputer and AT86RF212 radio frequency chip, and the other end is received the digital power input end VCC_SYS1 into C8051F912 single-chip microcomputer, double-axel acceleration sensor and the power supply of AT86RF212 radio frequency chip by a resistance R 1.In sensor circuit, the Xfilt of ADXL202 double-axel acceleration sensor end and Yfilt end be ground connection after capacitor C 2 and capacitor C 3 respectively, T2 end ground connection after resistance R 2.Two pulse width signal output terminal Xout of ADXL202 double-axel acceleration sensor and the dutycycle of Yout output signal are directly proportional to X-direction and Y direction acceleration respectively.The Xout of ADXL202 double-axel acceleration sensor holds with Yout P0.6 mouth and the P0.7 mouth that is connected respectively C8051F912 single-chip microcomputer, and P0.6 mouth and P0.7 mouth are configured to acquisition mode, the level of catching ADXL202 double-axel acceleration sensor Xout and Yout end changes, in order to measure output signal dutycycle, thereby calculate corresponding acceleration.The P0.1 mouth of C8051F912 single-chip microcomputer, P1.0 mouth, P1.1 mouth, P1.2 mouth, P1.3 mouth, P1.4 mouth and P1.5 mouth are connected with IRQ end, SCLK end, MISO end, MOSI end, SEL end ,/RST end and the SLP_TR end of AT86RF212 radio frequency chip respectively.Between C8051F912 single-chip microcomputer and AT86RF212 radio frequency chip, adopt serial peripheral interface protocol to communicate, wherein single-chip microcomputer is SPI main device, and radio frequency chip is that SPI is from device.The pin 1,2,3,6,7,9,10,14,16,17,18,21,27,30,31 of AT86RF212 radio frequency chip and 32 ground connection, pin 13 is connected with pin 12 and together through shunt capacitance C10 ground connection, pin 15 is ground connection after 3.3V power supply is connected with electrical power by-pass capacitor C 11.The XTAL1 end of AT86RF212 radio frequency chip and XTAL2 end be ground connection after capacitor C 7 and C6 respectively, between the tie point of XTAL1 and C7 and XTAL2 and the tie point of C6, accesses crystal oscillator X2.The EVDD termination digital power input end VCC_SYS1 of AT86RF212 radio frequency chip, and the tie point of EVDD termination digital power input end VCC_SYS1 is through electrical power by-pass capacitor C 4 ground connection, and AVDD holds through shunt capacitance C5 ground connection.Two-way differential antennae pin RFP, the RFN of AT86RF212 radio frequency chip are connected with balanced-to-unblanced transformer U2 through RF coupling capacitance C9, C8 respectively, balanced-to-unblanced transformer U2 is connected with low-pass filter U1 again, realizes differential signal to the conversion of single-ended signal.Low-pass filter U1 is connected with antenna P1 again, and data are sent to receiver module with the form of wireless transmission.
Above embodiment is only explanation technological thought of the present utility model; can not limit protection domain of the present utility model with this; every technological thought according to the utility model proposes, any change of doing on technical scheme basis, within all falling into the utility model protection domain.
Claims (3)
1. the acceleration transducer wireless network node module for vibration detection, comprise sending module and receiver module, described sending module comprises power circuit, sensor circuit and single-chip microcomputer, described power circuit is connecting sensor circuit and single-chip microcomputer respectively, sensor circuit connects single-chip microcomputer, it is characterized in that: described transmitting terminal also comprises radio circuit, radio circuit connects respectively power circuit and single-chip microcomputer; Described sensor circuit adopts ADXL202 double-axel acceleration sensor.
2. a kind of acceleration transducer wireless network node module for vibration detection according to claim 1, it is characterized in that: described single-chip microcomputer adopts C8051F912 single-chip microcomputer, described radio circuit comprises AT86RF212 radio frequency chip, balanced-to-unblanced transformer, low-pass filter and the antenna connecting successively, and AT86RF212 radio frequency chip connects single-chip microcomputer.
3. a kind of acceleration transducer wireless network node module for vibration detection according to claim 2, is characterized in that: the P0.1 mouth of described C8051F912 single-chip microcomputer, P1.0 mouth, P1.1 mouth, P1.2 mouth, P1.3 mouth, P1.4 mouth and P1.5 mouth are connected with IRQ end, SCLK end, MISO end, MOSI end, SEL end ,/RST end and the SLP_TR end of AT86RF212 radio frequency chip respectively; The P0.6 mouth of C8051F912 single-chip microcomputer and P0.7 mouth are connected respectively Xout and the Yout end of ADXL202 double-axel acceleration sensor, and P0.6 mouth and P0.7 mouth are configured to acquisition mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715020.8U CN203551105U (en) | 2013-11-14 | 2013-11-14 | Accelerometer wireless network node module for vibration detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320715020.8U CN203551105U (en) | 2013-11-14 | 2013-11-14 | Accelerometer wireless network node module for vibration detection |
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| CN203551105U true CN203551105U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320715020.8U Expired - Fee Related CN203551105U (en) | 2013-11-14 | 2013-11-14 | Accelerometer wireless network node module for vibration detection |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157816A (en) * | 2015-08-18 | 2015-12-16 | 中国电子科技集团公司第四十九研究所 | Wireless vibration target classification and recognition device |
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2013
- 2013-11-14 CN CN201320715020.8U patent/CN203551105U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105157816A (en) * | 2015-08-18 | 2015-12-16 | 中国电子科技集团公司第四十九研究所 | Wireless vibration target classification and recognition device |
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Legal Events
| Date | Code | Title | Description |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140416 Termination date: 20161114 |