CN107024508A - 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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- CN107024508A CN107024508A CN201710331952.5A CN201710331952A CN107024508A CN 107024508 A CN107024508 A CN 107024508A CN 201710331952 A CN201710331952 A CN 201710331952A CN 107024508 A CN107024508 A CN 107024508A
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 23
- 230000036541 health Effects 0.000 title claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 15
- 238000001514 detection method Methods 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 claims description 3
- 230000001133 acceleration Effects 0.000 claims description 2
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- 238000012423 maintenance Methods 0.000 abstract description 3
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/38—Concrete; Lime; Mortar; Gypsum; Bricks; Ceramics; Glass
- G01N33/383—Concrete or cement
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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 present invention use take can antenna and physics take the mode of energy to provide electric energy for integrated circuit, without built-in power, the difficulty of battery can not be changed by solving the later stage, greatly reduce manufacturing cost and later maintenance expense；The data signal that variable matching network is obtained 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；Backscatter modulator is based on radar backscattering principle, with the modulation of clever power consumption, the characteristics of circuit structure is simple.
Description
Technical field
The present invention relates to a kind of wireless senser suitable for concrete structure health monitoring, dependent territory builds structure technology neck
Domain.
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 uses and does not destroy mixed mostly
The lossless detection method of solidifying soil internal structure and performance, 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 early stage allocation wiring structure complicated, and installation cost is high and the cycle is long, 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, works in active mode, and monitoring needs to bury WSN nodes concrete in real time
Enter in concrete, the later stage can not change battery, therefore, concrete structure health monitoring in the urgent need to one kind have long lifespan, into
The wireless field monitoring mode of this quick localization characteristics of low, energy.
With the development of science and technology, low cost passive wireless senser is designed to possibility.Compared to existing WSN sections
Point technology, the wireless transmission distance of passive sensor is short, and speed is low, and this just greatly limit its application.But based on thunder
Back-scattering modulation technique up to backscattered modulation principle has zero-power modulation, circuit structure simple and the low spy of power consumption
Point, adds the wireless transmission distance of passive sensor, 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 the present invention is, in order to solve the problem of existing concrete monitoring structural health conditions are present, and proposes a kind of be applicable
In the wireless senser of concrete structure health monitoring.
Realize that technical scheme is as follows：A kind of wireless senser suitable for concrete structure health monitoring includes
Communication antenna, take can antenna, variable matching network, demodulator, backscatter modulator, controller, physics take can module, power supply
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；The adjustable matching network input of phaselocked loop output termination；Adjustable matching network
Output end interface-demodulator input and communication antenna；Oscillator and phaselocked loop constitute frequency digital quantizer, frequency numeral conversion
Device can receive antenna the center frequency that signal frequency is converted to corresponding digital signal and the adjustable matching network of automatic feedback control
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 that best power is received
State.
It is described to take energy antenna and physics to take energy module to be used for for the energy needed for power management module is provided；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 to take the physics such as energy to take energy for power management module
Energy.
It is that other each several parts are powered that the power management module, which is used to the energy of acquisition being converted to galvanic current pressure,.
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, with zero-power modulation, circuit structure letter
Single and low in energy consumption the characteristics of, it is adapted to be operated in the concrete environment of high loss.
Compared with prior art, the advantage of the invention is that：The present invention use take can antenna and physics take the mode of energy for
Integrated circuit provides electric energy, without built-in power, solves the later stage and can not change the difficulty of battery, greatly reduces manufacturing cost
With later maintenance expense；The data signal that variable matching network is obtained according to frequency digital quantizer adjusts centre frequency to complete
Power match under varying input signal frequency, so that improves that wireless senser works under complicated concrete environment is reliable
Property；Backscatter modulator is based on radar backscattering principle, with the modulation of clever power consumption, the characteristics of circuit structure is simple.
Brief description of the drawings
Fig. 1 is the theory diagram of the present invention；Fig. 2 is the specific embodiment structured flowchart of the present invention.
Embodiment
In the embodiment of the present invention shown in Fig. 1 and Fig. 2.
The invention will be further described with reference to the accompanying drawings and examples, to be that advantages and features of the invention can be more easy to
In it will be appreciated by those skilled in the art that so as to make relatively sharp define to protection scope of the present invention.Following examples are only
For instruction and explanation of the present invention, even if without constituting the limitation to scheme of the invention.
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 with MCU inputs to be connected；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 is included, 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；The adjustable matching network input of phaselocked loop output termination；Adjustable matching network
Output end interface-demodulator input and communication antenna.
The power management module provides galvanic current pressure 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；Vibration takes energy device to be then to extract the vibrational energy feeding in concrete
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, processing complexity reduction, 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, with zero-power modulation, circuit knot
In the features such as structure is simple and low in energy consumption, the concrete environment for being adapted to work height loss.
The MCU have selected ISO18000-6C consensus standards, and its feature is, speed is fast, and data rate is up to 40kbps
~640kbps；Multiple labels can be read simultaneously；Function is strong, with a variety of write-protect modes, high safety.
Claims (7)
1. a kind of wireless senser suitable for concrete structure health monitoring, it is characterised in that the wireless senser includes
Communication antenna, take can antenna, variable matching network, demodulator, backscatter modulator, controller, physics take can 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
The output end of memory, sensor output is stated with controller input to be connected；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.
2. a kind of 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；The adjustable matching network input of phaselocked loop output termination；The output termination of adjustable matching network
Demodulator input and communication antenna；Oscillator and phaselocked loop constitute frequency digital quantizer, and frequency digital quantizer can be by day
Line receives signal frequency and is converted to corresponding digital signal and the centre frequency of the adjustable matching network of automatic feedback control；It is described variable
Matching network is used to complete the power match under varying input signal frequency, reaches best power reception state.
3. a kind of 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 for for the energy needed for power management module is provided；It is described to take energy antenna to be used to catch
The electromagnetic wave obtained in space provides energy for power management module；The physics takes energy module to take energy or the temperature difference by vibration
The physics of energy is taken to take energy mode to provide energy for power management module.
4. a kind of 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.
5. a kind of 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.
6. a kind of 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；The backscatter modulator is based on thunder
Up to backscattered modulation principle, with the characteristics of zero-power is modulated, circuit structure is simple and low in energy consumption, it is adapted to be operated in high loss
Concrete environment in.
7. a kind of wireless senser suitable for concrete structure health monitoring according to claim 2, it is characterised in that
In the variable matching network, digital phase-locked loop utilizes the frequency of the wireless signal control loop internal oscillation signal of outside input
And phase, realize output signal frequency to frequency input signal from motion tracking so that adjustable matching network can be automatically adjusted
Centre frequency, completes the adaptive power matching under varying input signal frequency.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710331952.5A CN107024508A (en) | 2017-05-12 | 2017-05-12 | A kind of wireless senser suitable for concrete structure health monitoring |
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| CN201710331952.5A CN107024508A (en) | 2017-05-12 | 2017-05-12 | A kind of wireless senser suitable for concrete structure health monitoring |
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Cited By (3)
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| CN108061612A (en) * | 2017-12-26 | 2018-05-22 | 上海建工集团股份有限公司 | A kind of mass concrete temperature detection device |
| CN113067937A (en) * | 2021-03-18 | 2021-07-02 | Oppo广东移动通信有限公司 | Bluetooth connection method, device, equipment and storage medium |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107566014A (en) * | 2017-09-12 | 2018-01-09 | 电子科技大学 | Wireless energy collection type radio sensing network node |
| CN107566014B (en) * | 2017-09-12 | 2021-03-30 | 电子科技大学 | Wireless energy collection type wireless sensor network node |
| CN108061612A (en) * | 2017-12-26 | 2018-05-22 | 上海建工集团股份有限公司 | A kind of mass concrete temperature detection device |
| CN113067937A (en) * | 2021-03-18 | 2021-07-02 | Oppo广东移动通信有限公司 | Bluetooth connection method, device, equipment and storage medium |
| CN113067937B (en) * | 2021-03-18 | 2023-03-21 | Oppo广东移动通信有限公司 | Bluetooth connection method, device, equipment and storage medium |
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