CN206696219U - A kind of wireless senser suitable for concrete structure health monitoring - Google Patents
A kind of wireless senser suitable for concrete structure health monitoring Download PDFInfo
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- CN206696219U CN206696219U CN201720523410.3U CN201720523410U CN206696219U CN 206696219 U CN206696219 U CN 206696219U CN 201720523410 U CN201720523410 U CN 201720523410U CN 206696219 U CN206696219 U CN 206696219U
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- matching network
- energy
- wireless senser
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Abstract
A kind of wireless senser suitable for concrete structure health monitoring, including communication antenna, take can antenna, variable matching network, demodulator, backscatter modulator, controller, physics take can module, power management module, memory and sensor.The utility model use takes can antenna and physics take can mode provide electric energy for integrated circuit, without built-in power, solve the difficulty that the later stage can not change battery, greatly reduce manufacturing cost and later maintenance expense；The data signal that variable matching network obtains according to frequency digital quantizer adjusts centre frequency to complete the power match under varying input signal frequency, so as to improve the reliability that wireless senser works under complicated concrete environment；The characteristics of backscatter modulator is based on radar backscattering principle, has the modulation of clever power consumption, and circuit structure is simple.
Description
Technical field
A kind of wireless senser suitable for concrete structure health monitoring is the utility model is related to, dependent territory builds structure technology
Field.
Background technology
With China's sustained economic development, various large complicated engineering structures emerge in an endless stream, and these building engineering structures exist
In occupation of consequence in national product life.A kind of most popular construction material is mixed in current civil engineering structure
Solidifying soil, therefore, the health monitoring of concrete structure is just particularly important.Existing concrete NDT is mostly mixed using not destroying
The lossless detection method of native internal structure and performance is coagulated, but these methods can not directly measure required physical quantity, in real time
Property is poor；Moreover, lossless detection method process is complicated, cost is high, usually needs to implement to close in detection process, produces and give birth to the masses
Work brings very big inconvenience.
Most concrete health monitoring in real time both at home and abroad uses embedment wired sensor mode, but due to wired sensing
The addition of device causes allocation wiring structure complexity early stage, and installation cost is high and the cycle is grown, and later maintenance cost is also very high, and these are all
Limit the large-scale application of such monitoring technology.With the development of technology of Internet of things, the concrete based on wireless senser is real
When monitoring technology cause both at home and abroad it is widely studied.Existing wireless senser all uses wireless sensor network（Wireless
Sensor Networks, WSN）Node technology, active mode is worked in, and the real-time monitoring needs of concrete bury WSN nodes
Enter in concrete, the later stage can not change battery, therefore, concrete structure health monitoring there is an urgent need to one kind have long lifespan, into
This is low, the wireless field monitoring mode of energy fast positioning feature.
With the development of science and technology, low cost passive wireless senser is designed to possibility.Saved compared to existing WSN
Point technology, the wireless transmission distance of passive sensor is short, and speed is low, and this just greatly limit its application.But it is based on thunder
Back-scattering modulation technique up to backscattered modulation principle has the simple spy such as low with power consumption of zero-power modulation, circuit structure
Point, the wireless transmission distance of passive sensor is added, improves transmission rate.Therefore, passive sensing label is especially suitable for structure
Build long-term, the concrete structure real time monitoring system for health of large-scale application.
The content of the invention
The purpose of this utility model is, in order to solve the problems, such as that existing concrete monitoring structural health conditions are present, proposes a kind of
Suitable for the wireless senser of concrete structure health monitoring.
Realize that the technical solution of the utility model is as follows：A kind of wireless senser suitable for concrete structure health monitoring
Including communication antenna, take can antenna, variable matching network, demodulator, backscatter modulator, controller, physics take can module,
Power management module, memory and sensor.
The communication antenna is connected with the input of variable matching network；The output end of the variable matching network and demodulation
Device input is connected；The demodulator output end is connected with the input of controller；It is described to take energy antenna, physics to take energy module
Output end is connected with the input of power management module；The output end of the power management module respectively with demodulator input,
Variable matching network input, backscatter modulator input are connected with controller output end；The output end of the memory,
Sensor output is connected with controller input；The output end of the controller is connected with backscatter modulator input；
The output end of the backscatter modulator is connected with the input of variable matching network.
The variable matching network includes adjustable matching network, oscillator and phaselocked loop：Phaselocked loop input connects letter day
Line；Oscillator output end connects phaselocked loop input；Phaselocked loop output terminates adjustable matching network input；Adjustable matching network
Output end interface-demodulator input and communication antenna；Oscillator and phaselocked loop form frequency digital quantizer, frequency numeral conversion
Antenna reception signal frequency conversion can be the center frequency of corresponding digital signal and the adjustable matching network of automatic feedback control by device
Rate.
In the variable matching network, digital phase-locked loop is believed using the wireless signal control loop internal oscillator of outside input
Number frequency and phase, realize output signal frequency to frequency input signal from motion tracking so that adjustable matching network can
To automatically adjust centre frequency, the adaptive power matching under varying input signal frequency is completed.
The communication antenna is used to complete to receive wireless communication signals and sends backscatter modulation signal.
The variable matching network is used to complete the power match under varying input signal frequency, reaches best power reception
State.
It is described to take energy antenna and physics to take energy module to be used to provide required energy for power management module；The physics takes
Energy module is that vibration takes energy device；It is described take can the electromagnetic wave that can capture in space of antenna provide energy for power management module,
The physics takes energy module to be provided by way of vibration takes energy or the temperature difference takes the physics such as energy to take energy for power management module
Energy.
It is that steady dc voltage is the power supply of other each several parts that the power management module, which is used for the energy conversion of acquisition,.
The sensor is used for the detection for completing various physical quantitys and numeral conversion；Passed including temperature sensor, acceleration
Sensor and humidity sensor.
The backscatter modulator, the backscattered modulation for controller output signal.
The backscatter modulator is based on radar backscattered modulation principle, has zero-power modulation, circuit structure letter
The characteristics of single and low in energy consumption, it is adapted to be operated in the concrete environment of high loss.
Compared with prior art, the utility model has the advantage of：The utility model, which uses, takes energy antenna and physics to take energy
Mode provide electric energy for integrated circuit, without built-in power, solve the difficulty that the later stage can not change battery, greatly reduce
Manufacturing cost and later maintenance expense；The data signal that variable matching network obtains according to frequency digital quantizer adjusts center frequency
Rate completes the power match under varying input signal frequency, is worked under complicated concrete environment so as to improve wireless senser
Reliability；Backscatter modulator is based on radar backscattering principle, and there is clever power consumption to modulate, and circuit structure is simply special
Point.
Brief description of the drawings
Fig. 1 is theory diagram of the present utility model；Fig. 2 is specific embodiment of the utility model structured flowchart.
Embodiment
In specific embodiment of the present utility model shown in Fig. 1 and Fig. 2.
The utility model is described in further detail with reference to the accompanying drawings and examples, the advantages of to be the utility model and spy
Sign can be easier to it will be appreciated by those skilled in the art that so as to make relatively sharp define to the scope of protection of the utility model.With
Lower embodiment is merely illustrative and explained the utility model, even if without forming the limitation to the utility model scheme.
Reference picture 1, a kind of wireless senser suitable for concrete structure health monitoring of the present embodiment include communication antenna,
Variable matching network, ASK demodulator of PM signal PMs, ASK backscatter modulators, micro-control unit（MCU）, power management module and biography
Sensor.The input of variable matching network connects communication antenna；The output termination ASK demodulator of PM signal PM inputs of variable matching network
End；ASK demodulator of PM signal PMs input termination MCU output end；The output end of power management module is defeated with ASK demodulator of PM signal PMs respectively
Enter end, variable matching network input, ASK backscatter modulators input are connected with MCU inputs；Sensor output connects
Controller input；MCU output end is connected with ASK backscatter modulator inputs；The output of ASK backscatter modulators
End is connected with the input of variable matching network.
The power management module, which includes, takes energy antenna, vibration to take energy device, voltage doubling rectifing circuit and voltage-stablizer：Taking can antenna
The input of the output termination voltage doubling rectifing circuit of energy device is taken with vibration；The input of the output termination voltage-stablizer of voltage doubling rectifing circuit
End.
The variable matching network includes adjustable matching network, oscillator and phaselocked loop；Phaselocked loop input connects letter day
Line；Oscillator output end connects phaselocked loop input；Phaselocked loop output terminates adjustable matching network input；Adjustable matching network
Output end interface-demodulator input and communication antenna.
The power management module provides steady dc voltage for integrated circuit.Energy antenna is wherein taken to be used for capturing space
In radio magnetic wave and be sent to voltage doubling rectifing circuit；It is then that the vibrational energy extracted in concrete is sent into that vibration, which takes energy device,
Voltage doubling rectifing circuit；Obtained AC signal is converted to DC voltage and is input in voltage-stablizer by voltage doubling rectifing circuit, then for
The DC voltage of other circuit with stable.
In the variable matching network, digital phase-locked loop is believed using the wireless signal control loop internal oscillator of outside input
Number frequency and phase, realize output signal frequency to frequency input signal from motion tracking so that adjustable matching network can
To automatically adjust centre frequency, the adaptive power matching under varying input signal frequency is completed.
The ASK demodulator of PM signal PMs use non-coherent demodulation（Envelope detection method）, the advantage is that need not extract carrier wave
Information, circuit is simple, can less consider channel estimation or even omit, and processing complexity reduces, and realizes relatively simple.
Backscatter modulator described in the ASK backscatter modulators is based on radar backscattered modulation principle, utilizes
The changes in amplitude of carrier wave transmits digital information, and its frequency and initial phase keep constant, have zero-power modulation, circuit knot
The features such as structure is simple and low in energy consumption, it is adapted in the concrete environment of the high loss of work.
The MCU have selected ISO18000-6C consensus standards, and its feature is that speed is fast, and data rate is up to 40kbps
~640kbps；Multiple labels can be read simultaneously；Function is strong, has a variety of write-protect modes, high safety.
Claims (6)
1. a kind of wireless senser suitable for concrete structure health monitoring, it is characterised in that the wireless senser includes
Communication antenna, energy antenna, variable matching network, demodulator, backscatter modulator, controller, physics is taken to take energy module, power supply
Management module, memory and sensor；The communication antenna is connected with the input of variable matching network；The variable pair net
The output end of network is connected with demodulator input；The demodulator output end is connected with the input of controller；Described take can day
Line, physics take the energy output end of module to be connected with the input of power management module；The output end of the power management module point
It is not connected with demodulator input, variable matching network input, backscatter modulator input and controller output end；Institute
State the output end of memory, sensor output is connected with controller input；The output end of the controller and backscattering
Modulator input is connected；The output end of the backscatter modulator is connected with the input of variable matching network.
A kind of 2. wireless senser suitable for concrete structure health monitoring according to claim 1, it is characterised in that
The variable matching network includes adjustable matching network, oscillator and phaselocked loop；Phaselocked loop input connects communication antenna；Oscillator
Output termination phaselocked loop input；Phaselocked loop output terminates adjustable matching network input；The output termination of adjustable matching network
Demodulator input and communication antenna；Oscillator and phaselocked loop form frequency digital quantizer, and frequency digital quantizer can incite somebody to action
Antenna reception signal frequency conversion is corresponding digital signal and the centre frequency of the adjustable matching network of automatic feedback control.
A kind of 3. wireless senser suitable for concrete structure health monitoring according to claim 1, it is characterised in that
It is described to take energy antenna and physics to take energy module to be used to provide required energy for power management module；The physics takes can module energy
By way of vibration takes energy or the temperature difference takes the physics of energy to take energy energy is provided for power management module.
A kind of 4. wireless senser suitable for concrete structure health monitoring according to claim 1, it is characterised in that
The communication antenna is used to complete to receive wireless communication signals and sends backscatter modulation signal.
A kind of 5. wireless senser suitable for concrete structure health monitoring according to claim 1, it is characterised in that
The sensor is used for the detection for completing various physical quantitys and numeral conversion；Including temperature sensor, acceleration transducer and wet
Spend sensor.
A kind of 6. wireless senser suitable for concrete structure health monitoring according to claim 1, it is characterised in that
The backscatter modulator, the backscattered modulation for controller output signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720523410.3U CN206696219U (en) | 2017-05-12 | 2017-05-12 | A kind of wireless senser suitable for concrete structure health monitoring |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720523410.3U CN206696219U (en) | 2017-05-12 | 2017-05-12 | A kind of wireless senser suitable for concrete structure health monitoring |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024508A (en) * | 2017-05-12 | 2017-08-08 | 华东交通大学 | A kind of wireless senser suitable for concrete structure health monitoring |
-
2017
- 2017-05-12 CN CN201720523410.3U patent/CN206696219U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024508A (en) * | 2017-05-12 | 2017-08-08 | 华东交通大学 | A kind of wireless senser suitable for concrete structure health monitoring |
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| CF01 | Termination of patent right due to non-payment of annual fee |