Bridge strain detection sensor based on wireless sensing network interface

A wireless sensor network and detection sensor technology, applied in network topology, wireless communication, electric/magnetic solid deformation measurement, etc., can solve problems such as high price, unsuitable for national consumption level, and data that cannot correctly reflect bridge strain detection information. , to achieve the effect of improving efficiency, improving anti-interference ability and shortening detection period

Inactive Publication Date: 2009-10-21
CHANGAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

As a result, the data cannot correctly reflect the bridge strain detection information
Finally, the current existing bri

Method used

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  • Bridge strain detection sensor based on wireless sensing network interface
  • Bridge strain detection sensor based on wireless sensing network interface
  • Bridge strain detection sensor based on wireless sensing network interface

Examples

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Example Embodiment

[0030] The multi-channel bridge strain detection sensor with a wireless sensor network interface of the present invention is composed of a pasted strain gauge bridge, a power supply circuit, an amplifying and conditioning filter circuit, a single chip ATmega128L, a CC2420 radio frequency circuit and a computer.

[0031] Refer to figure 1 As shown, the data acquisition module is connected to the weak signal conditioning and amplifying module to collect the deformation of the bridge when it is compressed. The data acquisition module is a bridge circuit composed of strain gauges and precision trimming potentiometers. In the signal conditioning, the collected millivolt voltage is amplified and filtered to the range of 0~3.3V, and then transmitted to the data processing module for A / D conversion. The data processing module is composed of ATmega128L chip and its power supply module. The single-chip microcomputer has 8-channel 10-bit ADC port, which guarantees the accuracy and high accur...

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Abstract

The invention discloses a bridge strain detection sensor based on a wireless sensing network interface. A data collecting module of the sensor is connected with a weak signal conditioning amplifier module, the weak signal conditioning amplifier module is connected with a data processing module, the data processing module is connected with a wireless transmission module, the wireless transmitting module is connected with a wireless receiving module, and finally the wireless receiving module is connected with a PC terminal; an ATmega 128L single chip in the data processing module is provided with an eight-channel tens-place ADC switching port, so that the strain detection sensor can detect the strain signals of eight channels, thus a CC 2420 radio frequency chip of the wireless transmitting module is used for carrying out wireless transmitting. And the signals are received by the wireless receiving module and then transmitted to the PC terminal by an SPI bus. The invention can detect the bearing capacity of the bridge and verify and develop the structural design of the bridge, and has the characteristics of no wiring, high detection efficiency, real-time detection, etc.

Description

technical field [0001] The invention relates to a bridge load detection technology, in particular to a bridge strain detection sensor based on a wireless sensor network interface. Background technique [0002] Bridge strain detection plays an important role in the research, design, construction and acceptance of bridges. At present, the commonly used bridge strain detection method is bridge strain detection based on cable transmission. [0003] In the bridge strain detection of wired cable transmission, the transmission is completed by wired cable. First of all, although this technical method has the advantages of high data transmission efficiency and mature technology, in the test of long-span bridge structures, as the span of the bridge continues to increase, the number of sensors and the amount of wired cables increase sharply, resulting in on-site Arranging and evacuating wired cables requires a lot of work, a long test cycle, and low efficiency, which may even make it...

Claims

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Application Information

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IPC IPC(8): G01B7/16H04W84/18G08C17/02
Inventor 赵祥模徐志刚杨澜王海彬邬满史昕张楠张立成韩永军
Owner CHANGAN UNIV
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