CN102176635A - Automatic acquisition device for safety monitoring data as well as power-supply method and device thereof - Google Patents
Automatic acquisition device for safety monitoring data as well as power-supply method and device thereof Download PDFInfo
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Abstract
The invention relates to an automatic acquisition device for safety monitoring data of geotechnical engineering as well as a power-supply method and device thereof. The power-supply method comprises the following steps: A, generating wirelessly-transmitted primary frequency signals in a data acquisition host by an oscillating circuit, amplifying power of the primary frequency signals, and transmitting energy to a data acquisition terminal in the form of emitting electromagnetic waves by a wireless transmission circuit; and B, receiving the electromagnetic waves by the data acquisition terminal and converting the electromagnetic energy of the electromagnetic waves into direct-current energy so as to supply power for the data acquisition terminal. In the power-supply method, a wireless power supply technology is utilized to supply the power for the data acquisition terminal of the automatic data acquisition device wirelessly.
Description
Technical field
The present invention relates to the health monitoring technical field of Geotechnical Engineering, particularly a kind of Geotechnical Engineering safety monitoring automatic data collection device and method of supplying power to and electric supply installation.
Background technology
In Geotechnical Engineering safety monitoring technology field, usually adopt automatic data collection device (Data Auto-acquisitionUnit, referring to power industry standard DL/T1134-2009) realize automatic signal measurement, conversion, processing and the memory function of monitor (Monitoring Instrument is referring to power industry standard DL/T5211-2005).
The automatic data collection device of safety monitoring field use at present is to power by modes such as backup battery, wired power supply, solar cells, and all there is certain limitation in these supply power modes.Wherein: 1. the backup battery mode is powered, owing to be subjected to battery accumulate capacity limit, needs regular replacing battery to keep the normal power supply demand of automatic data collection device; 2. wired power supply needs cable wiring manufacture and reliable power supply, realizes not too easily in some engineering occasion; 3. solar cell for supplying power needs equipment such as increase solar panel, energy storage battery, charge management module, has increased the cost and the difficulty of engineering construction, simultaneously because solar panel has reduced the reliability of system, has increased the system maintenance work amount.
Summary of the invention
The present invention is directed to the limitation that the existing multiple supply power mode of the automatic data collection device that uses in Geotechnical Engineering safety monitoring field exists, a kind of new method of supplying power to is provided, this method of supplying power to has adopted the wireless power technology, has realized the wireless power to the data collection station of data automatic acquisition device.The invention still further relates to the electric supply installation of this Geotechnical Engineering safety monitoring automatic data collection device, and the Geotechnical Engineering safety monitoring automatic data collection device that adopts this electric supply installation.
Technical scheme of the present invention is as follows:
A kind of method of supplying power to of Geotechnical Engineering safety monitoring automatic data collection device, described Geotechnical Engineering safety monitoring automatic data collection device comprises data collection host and data collection station, it is characterized in that this method comprises the steps:
A, in data collection host, produce the dominant frequency signal of wireless transmission by oscillating circuit, again this dominant frequency signal is carried out power amplification after, by radio transmitter energy is transferred to data collection station with the form of launching electromagnetic wave;
B, data collection station receive this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, to realize the power supply to the data acquisition terminal.
In step B, data collection station receives this electromagnetic wave by coupled resonant circuit and exports the current signal of alternation, by ac-dc converter circuit the current signal of described alternation is converted to d. c. voltage signal again, described direct voltage is the supply power voltage of data collection station.
In step B, after by ac-dc converter circuit the current signal of described alternation being converted to d. c. voltage signal, also carrying out power detection and make the amplitude of the direct voltage that obtains meet the dc voltage value of data collection station power reguirements by power-sensing circuit.
In steps A, behind the dominant frequency signal by oscillating circuit generation wireless transmission in data collection host, also comprise the peak-to-peak value of regulating the dominant frequency signal to carry out the adjusting of wireless transmission power output, the dominant frequency signal after will regulating again carries out power amplification.
A kind of electric supply installation of Geotechnical Engineering safety monitoring automatic data collection device, described Geotechnical Engineering safety monitoring automatic data collection device comprises data collection host and data collection station, it is characterized in that, be included in the wireless energy transmitter module that the interior DC power-supply circuit with in the data collection host that is provided with of data collection host links to each other, and the wireless energy receiver module that in data collection station, is provided with; Described wireless energy transmitter module comprises oscillating circuit, power amplification circuit and radio transmitter, the input of described oscillating circuit is connected to the DC power-supply circuit output of data collection host, the input of described power amplification circuit is connected to the output of oscillating circuit, the input of described radio transmitter is connected to the output of power amplification circuit, the direct current of DC power-supply circuit output produces the dominant frequency signal of wireless transmission by oscillating circuit, power amplification circuit carries out power amplification with this dominant frequency signal, by radio transmitter energy is transferred to data collection station with the form of launching electromagnetic wave then, described wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, to realize power supply to the data acquisition terminal.
Described wireless energy receiver module comprises coupled resonant circuit, ac-dc converter circuit and power-sensing circuit, the input of described coupled resonant circuit receives the electromagnetic wave of the radio transmitter emission in the wireless energy transmitter module, the input of described ac-dc converter circuit is connected to the output of coupled resonant circuit, and the input of described power-sensing circuit is connected to the output of ac-dc converter circuit; Coupled resonant circuit receives the electromagnetic wave of radio transmitter emission, and the current signal of output alternation, described ac-dc converter circuit is converted to d. c. voltage signal with the current signal of described alternation and exports power-sensing circuit to, and power-sensing circuit carries out power detection makes the amplitude of the direct voltage that obtains meet the dc voltage value of data collection station power reguirements.
Described wireless energy transmitter module also comprises amplitude regulating circuit, described oscillating circuit links to each other with power amplification circuit by amplitude regulating circuit, the input of described amplitude regulating circuit is connected to the output of oscillating circuit, and the input of power amplification circuit is connected to the output of amplitude regulating circuit; Described amplitude regulating circuit receives the dominant frequency signal that oscillating circuit produces wireless transmission, and the peak-to-peak value of regulating the dominant frequency signal to be to carry out the adjusting of wireless transmission power output, and the dominant frequency signal after will regulating again exports power amplification circuit to.
Described radio transmitter comprises the transmitting coil and first electric capacity in parallel, and choosing of described first electric capacity is satisfied:
Wherein, l is the inductance value of transmitting coil, and c is the appearance value of first electric capacity, and f is the dominant frequency that oscillating circuit produces wireless transmission.
Described power-sensing circuit comprises single-pole double-throw switch (SPDT), power detection resistance and digital voltmeter, described single-pole double-throw switch (SPDT) carries out the switching of power detection and power supply, described power detection resistance carries out power detection by the direct voltage two ends that single-pole double-throw switch (SPDT) is connected to ac-dc converter circuit output, described digital voltmeter is attempted by power detection resistance two ends, after power detection, by the single-pole double-throw switch (SPDT) switching of powering, with the direct voltage of ac-dc converter circuit output dc voltage value as the data collection station power reguirements; Described coupled resonant circuit comprises receiving coil and tunable capacitor in parallel, and under the adjusting of tunable capacitor, the reading of digital voltmeter should be equal to or greater than the dc voltage value of data collection station power reguirements, and the resistance of power detection resistance satisfies:
Wherein, R is the resistance of power detection resistance, V
SBe the dc voltage value of data collection station power reguirements, I
SBe data collection station maximum consumption electric current;
And/or, described electric supply installation also comprises voltage stabilizing circuit, described ac-dc converter circuit links to each other with power-sensing circuit by voltage stabilizing circuit, and the input of described voltage stabilizing circuit is connected to the output of ac-dc converter circuit, and the input of power-sensing circuit is connected to the output of voltage stabilizing circuit.
A kind of Geotechnical Engineering safety monitoring automatic data collection device, comprise data collection host and data collection station, described data collection station comprises the measuring circuit that is connected successively with the safety monitoring instrument, signal modulation circuit and wireless signal transmitting module, described data collection host comprises the wireless signal receiver module that connects successively, signal demodulating circuit and data storage, and be the DC power-supply circuit of each parts power supply of data collection host, it is characterized in that, this harvester also comprises above-mentioned electric supply installation, wireless energy transmitter module in the described electric supply installation is arranged in the data collection host and with DC power-supply circuit and links to each other, and the wireless energy receiver module in the described electric supply installation is arranged in the data collection station to realize the power supply to the data acquisition terminal.
Technique effect of the present invention is as follows:
The method of supplying power to of the Geotechnical Engineering safety monitoring automatic data collection device that the present invention relates to, in data collection host, produce the dominant frequency signal of wireless transmission by oscillating circuit, after again this dominant frequency signal being carried out power amplification, energy is transferred to data collection station with the form of launching electromagnetic wave by radio transmitter; Receive this electromagnetic wave by data collection station again, and its electromagnetic energy is converted into direct current energy, to realize power supply the data acquisition terminal.This method of supplying power to has adopted the wireless power technology, has realized the wireless power to the data collection station of data automatic acquisition device.Can make data collection station not need to dispose wired power supply or use battery, can on function, regard a passive data collection station as, this has just saved the trouble of laying supply line or the engineering construction of changing battery being installed, need not to be provided with power line, also needn't set up equipment such as solar panel, energy storage battery, charge management module, reduce the system maintenance work amount, had the practical significance that engineering is used.
The electric supply installation of this Geotechnical Engineering safety monitoring automatic data collection device that the present invention relates to, be included in the wireless energy transmitter module that is provided with in the data collection host, and the wireless energy receiver module that in data collection station, is provided with, the wireless energy transmitter module comprises oscillating circuit, power amplification circuit and radio transmitter, the direct current of DC power-supply circuit output produces the dominant frequency signal of wireless transmission by oscillating circuit, power amplification circuit carries out power amplification with this dominant frequency signal, by radio transmitter energy is transferred to data collection station with the form of launching electromagnetic wave, the wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, to realize power supply to the data acquisition terminal.This electric supply installation can make data collection station not need to dispose power-supply devices such as backup battery, wired power supply, solar cell, overcome the limitation that existing multiple electric supply installation exists, saved the trouble of wired power supply cable wiring manufacture and periodic replacement or battery maintenance, effectively solve the powerup issue of Geotechnical Engineering safety monitoring automatic data collection device, and have easy to use, the advantage that cost is low has the practical significance that engineering is used.
The Geotechnical Engineering safety monitoring automatic data collection device of the above-mentioned electric supply installation of employing that the present invention relates to, than traditional automatic data collection device, the present invention has realized wireless power and two functions of wireless telemetering simultaneously, has solved the cable distribution construction of Geotechnical Engineering safety monitoring automatic data collection device and two big technical barriers of power supply effectively.
Description of drawings
Fig. 1 is the preferred flow charts of the method for supplying power to of Geotechnical Engineering safety monitoring automatic data collection device of the present invention.
Fig. 2 is the preferred structure schematic diagram of the wireless energy transmitter module of electric supply installation of the present invention.
Fig. 3 is the preferred structure schematic diagram of the wireless energy receiver module of electric supply installation of the present invention.
Fig. 4 is the structural representation of Geotechnical Engineering safety monitoring automatic data collection device of the present invention.
Embodiment
The present invention will be described below in conjunction with accompanying drawing.
Geotechnical Engineering safety monitoring automatic data collection device comprises data collection host and data collection station, and Fig. 1 is the method for supplying power to preferred flow charts of Geotechnical Engineering safety monitoring automatic data collection device of the present invention, and this method of supplying power to comprises the steps:
A, in data collection host, produce the dominant frequency signal of wireless transmission by oscillating circuit, and the mode of the peak-to-peak value by regulating this dominant frequency signal is carried out the adjusting of wireless transmission power output, dominant frequency signal after will regulating then carries out power amplification, by radio transmitter energy is transferred to data collection station with the form of launching electromagnetic wave again;
B, data collection station receive this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, to realize power supply to the data acquisition terminal, be specially: data collection station receives this electromagnetic wave by coupled resonant circuit and exports the current signal of alternation, by ac-dc converter circuit the current signal of described alternation is converted to d. c. voltage signal again, carries out power detection by power-sensing circuit then and make the amplitude of the direct voltage that obtains meet the dc voltage value of data collection station power reguirements.
The present invention relates to a kind of electric supply installation of Geotechnical Engineering safety monitoring automatic data collection device, effectively solve the powerup issue of Geotechnical Engineering safety monitoring automatic data collection device, this electric supply installation comprises wireless energy transmitter module that is arranged in the data collection host and the wireless energy receiver module that is arranged in the data collection station, the wireless energy transmitter module transfers to data collection station with energy with the form of launching electromagnetic wave, the wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, to realize power supply to the data acquisition terminal.
The preferred structure schematic diagram of wireless energy transmitter module as shown in Figure 2, comprise oscillating circuit, amplitude regulating circuit, power amplification circuit and radio transmitter 1, wherein, oscillating circuit preferred crystal oscillating circuit, the input of crystal oscillating circuit is connected to the output of the DC power-supply circuit of data collection host, the output of crystal oscillating circuit is connected to the input of amplitude regulating circuit, the output of amplitude regulating circuit is connected to the input of power amplification circuit, and the output of power amplification circuit is connected to the input of radio transmitter 1.
Among Fig. 2, Vin+, Vin-are expressed as the positive pole and the negative pole of the direct current supply voltage in the interior DC power-supply circuit of data collection host respectively, the direct current of DC power-supply circuit output is by the dominant frequency signal of crystal oscillating circuit generation wireless transmission, and the number range of its dominant frequency f is 200MHz～300MHz; Amplitude regulating circuit receives the dominant frequency signal of the wireless transmission of oscillating circuit generation, and the peak-to-peak value of regulating the dominant frequency signal also can be realized the adjusting of wireless transmission power output by the mode of PWM pulse-width modulation to carry out the adjusting of wireless transmission power output; Dominant frequency signal behind amplitude regulating circuit carries out power amplification by power amplification circuit, drives radio transmitter 1 energy is launched, and promptly by radio transmitter energy is transferred to data collection station with the form of launching electromagnetic wave.Radio transmitter 1 comprises the transmitting coil and first electric capacity in parallel, and the inductance value of establishing transmitting coil is l (after transmitting coil completed, l was exactly a definite value), and the appearance value of first electric capacity is c, and choosing of first electric capacity should be satisfied:
The preferred structure schematic diagram of wireless energy receiver module as shown in Figure 3, comprise coupled resonant circuit 2, ac-dc converter circuit (being the AC/DC change-over circuit) and power-sensing circuit 3, wherein, the input of coupled resonant circuit 2 receives the electromagnetic wave of radio transmitter 1 emission in the wireless energy transmitter module, the output of coupled resonant circuit 2 is connected to the input of AC/DC change-over circuit, and the output of AC/DC change-over circuit is connected to the input of power-sensing circuit 3.
Among Fig. 3, coupled resonant circuit 2 comprises receiving coil and tunable capacitor in parallel, and the inductance value of establishing receiving coil is l ', and the appearance value of tunable capacitor is c ', and this appearance value can adjust.Coupled resonant circuit 2 receives the electromagnetic wave of radio transmitter 1 emission, promptly pick up the radio signal of the characteristic frequency f of wireless energy transmitter module emission, the current signal of an alternation of coupled resonant circuit 2 outputs, the energy of this alternating current is relevant with the circuit parameter of coupled resonant circuit 2, the appearance value c ' of the tunable capacitor by regulating coupled resonant circuit 2 can obtain different energy; The electric current of alternation is through the AC/DC change-over circuit, exports a dc voltage value (V+～V-); For obtaining best energy reception, promptly obtain the direct voltage that a voltage magnitude meets the data collection station power reguirements, be made as V
s, being provided with power-sensing circuit 3 at the dc output end of wireless energy receiver module, the amplitude that this power-sensing circuit 3 carries out the direct voltage that power detection make to obtain meets the dc voltage value of data collection station power reguirements.
Power-sensing circuit 3 comprises single-pole double-throw switch (SPDT) S, power detection resistance R and digital voltage Table V, single-pole double-throw switch (SPDT) S comprises moved end S-1 and not moved end S-2 and S-3, when moved end S-1 throws when moved end S-2 does not hold, the switching of powering, when moved end S-1 throws when moved end S-3 does not hold, carry out power detection and switch, the power detection resistance R is connected to the direct voltage two ends of AC/DC change-over circuit output.When carrying out power detection, S-1 throws to S-3 end, and at power detection resistance R two ends and connect the digital voltage Table V, the voltage at monitoring R two ends is regulated the appearance value c ' of tunable capacitor, makes the reading of digital voltage Table V be equal to or greater than V
sBecause the resistance of power detection resistance R is according to V
sUnder the condition of power supply, data collection station maximum consumption electric current I
SBe provided with, the resistance of power detection resistance R satisfies:
Therefore can guarantee that by power-sensing circuit the wireless energy receiver module obtains best energy reception.After obtaining best energy reception, S-1 throws to S-2 end, switchings of powering, and the direct voltage that the AC/DC change-over circuit is exported is as the dc voltage value of data collection station power reguirements, realization is removed the digital voltage Table V simultaneously to the power supply of data acquisition terminal.
Above-mentioned wireless energy receiver module can also be provided with voltage stabilizing circuit at the output of AC/DC change-over circuit, the AC/DC change-over circuit links to each other with power-sensing circuit 3 by voltage stabilizing circuit, the input of voltage stabilizing circuit is connected to the output of AC/DC change-over circuit, and the output of voltage stabilizing circuit is connected to the input of power-sensing circuit 3.This voltage stabilizing circuit plays the pressure stabilization function to the direct voltage of AC/DC change-over circuit output, to obtain the high-quality supply power voltage of data collection station.
The invention still further relates to a kind of Geotechnical Engineering safety monitoring automatic data collection device, its structural representation as shown in Figure 4, comprise data collection host 4 and data collection station 5, wherein, data collection station 5 comprises measuring circuit, signal modulation circuit and the wireless signal transmitting module that is connected successively with the safety monitoring instrument; Data collection host 4 comprises the wireless signal receiver module that connects successively, signal demodulating circuit and data storage, also comprise the controller that links to each other with data storage, and be the DC power-supply circuit of each parts power supply of data collection host 4, this Geotechnical Engineering safety monitoring automatic data collection device adopts the power supply of electric supply installation realization of the present invention to the data acquisition terminal, this electric supply installation comprises wireless energy transmitter module and wireless energy receiver module, the wireless energy transmitter module is arranged in the data collection host 4 and with DC power-supply circuit and links to each other, the wireless energy transmitter module transfers to data collection station 5 with energy with the form of launching electromagnetic wave, the wireless energy receiver module is arranged in the data collection station 5, the wireless energy receiver module receives the electromagnetic wave of wireless energy transmitter module emission, and its electromagnetic energy is converted into direct current energy, to realize power supply to data acquisition terminal 5.
This Geotechnical Engineering safety monitoring automatic data collection device of the present invention can be to increase electric supply installation disclosed by the invention to be achieved on the basis of Zigbee automatic data collection device, particularly, in the data collection host in Zigbee automatic data collection device, increase the wireless energy transmitter module, in the data collection station in Zigbee automatic data collection device, increase the wireless energy receiver module, remove original power supply unit (as battery, AC/DC rectifier, solar cell etc.) simultaneously.This automatic data collection device after the making has kept the ripe wireless telemetry technique of original ZigBee radio communication, wireless networking, realizes wireless power owing to increased electric supply installation simultaneously.
The operation principle of this Geotechnical Engineering safety monitoring automatic data collection device of the present invention is as follows: data collection host 4, by its inner wireless energy transmitter module, produce the dominant frequency signal of wireless transmission by oscillating circuit, after again this dominant frequency signal being carried out power amplification, by radio transmitter with the form of energy with launching electromagnetic wave, energy delivery give with data collection host 4 distance be the wireless energy receiver module of data collection station 5 inside of L.The wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, the electric current of output alternation, after by ac-dc converter circuit the current conversion of described alternation being direct voltage, also the amplitude of carrying out the direct voltage that power detection make to obtain by power-sensing circuit meets the dc voltage value of data collection station 5 power reguirements, realization is to the wireless power of data acquisition terminal 5, the measuring circuit of data collection station 5 inside starts after obtaining electric energy to be measured, obtain the measurement data of safety monitoring instrument, measurement data sends to data collection host 4 by wireless signal transmitting module with the form of radio magnetic wave through signal modulation back in data collection station 5, wireless signal receiver module by data collection host 4 inside receives electromagnetic wave, and obtain measurement data by signal demodulating circuit, preserve measurement data by data storage then, realize the automatic data collection function.Than traditional automatic data collection device, the present invention has realized wireless power and two functions of wireless telemetering simultaneously, has solved the cable distribution construction of automatic data collection device and the two big technical barriers of powering effectively.
Complete course of work of the automatic data collection device of present embodiment is as follows: when starting measurement, data collection host 4, by the wireless energy transmitter module, send electric energy earlier to data collection station 5, data collection station 5 after obtaining electric energy, the electronic circuit work in the log-on data acquisition terminal 5.Data collection host 4 is realized communicating to connect by the ZigBee communication mode with data collection station 5, realizes the mutual and transmission of data, information.Data collection station 5 is realized functions such as safety monitoring apparatus measures, data processing, data upload according to the work order indication that data collection host 4 sends.After finishing data collection task, cancel the work of wireless energy transmitter module by data collection host 4, data collection station 5 loses electric energy and enters off position, and therefore whole Geotechnical Engineering safety monitoring automatic data collection device finishes this data collection task.
This Geotechnical Engineering safety monitoring automatic data collection device of the present invention is when reality is used, data collection host 4 can be made according to the needs of field condition and engineering and fix, also can move, a data collection host 4 can use with 5 pairings of many data collection stations simultaneously, realizes being used of one-to-many.
Claims (10)
1. the method for supplying power to of a Geotechnical Engineering safety monitoring automatic data collection device, described Geotechnical Engineering safety monitoring automatic data collection device comprises data collection host and data collection station, it is characterized in that this method comprises the steps:
A, in data collection host, produce the dominant frequency signal of wireless transmission by oscillating circuit, again this dominant frequency signal is carried out power amplification after, by radio transmitter energy is transferred to data collection station with the form of launching electromagnetic wave;
B, data collection station receive this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, to realize the power supply to the data acquisition terminal.
2. method of supplying power to according to claim 1, it is characterized in that, in step B, data collection station receives this electromagnetic wave by coupled resonant circuit and exports the current signal of alternation, by ac-dc converter circuit the current signal of described alternation is converted to d. c. voltage signal again, described direct voltage is the supply power voltage of data collection station.
3. method of supplying power to according to claim 2, it is characterized in that, in step B, after by ac-dc converter circuit the current signal of described alternation being converted to d. c. voltage signal, also carrying out power detection and make the amplitude of the direct voltage that obtains meet the dc voltage value of data collection station power reguirements by power-sensing circuit.
4. according to the described method of supplying power to of one of claim 1 to 3, it is characterized in that, in steps A, behind the dominant frequency signal by oscillating circuit generation wireless transmission in data collection host, also comprise the peak-to-peak value of regulating the dominant frequency signal to carry out the adjusting of wireless transmission power output, the dominant frequency signal after will regulating again carries out power amplification.
5. the electric supply installation of a Geotechnical Engineering safety monitoring automatic data collection device, described Geotechnical Engineering safety monitoring automatic data collection device comprises data collection host and data collection station, it is characterized in that, be included in the wireless energy transmitter module that the interior DC power-supply circuit with in the data collection host that is provided with of data collection host links to each other, and the wireless energy receiver module that in data collection station, is provided with; Described wireless energy transmitter module comprises oscillating circuit, power amplification circuit and radio transmitter, the input of described oscillating circuit is connected to the DC power-supply circuit output of data collection host, the input of described power amplification circuit is connected to the output of oscillating circuit, the input of described radio transmitter is connected to the output of power amplification circuit, the direct current of DC power-supply circuit output produces the dominant frequency signal of wireless transmission by oscillating circuit, power amplification circuit carries out power amplification with this dominant frequency signal, by radio transmitter energy is transferred to data collection station with the form of launching electromagnetic wave then, described wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into direct current energy, to realize power supply to the data acquisition terminal.
6. electric supply installation according to claim 5, it is characterized in that, described wireless energy receiver module comprises coupled resonant circuit, ac-dc converter circuit and power-sensing circuit, the input of described coupled resonant circuit receives the electromagnetic wave of the radio transmitter emission in the wireless energy transmitter module, the input of described ac-dc converter circuit is connected to the output of coupled resonant circuit, and the input of described power-sensing circuit is connected to the output of ac-dc converter circuit; Coupled resonant circuit receives the electromagnetic wave of radio transmitter emission, and the current signal of output alternation, described ac-dc converter circuit is converted to d. c. voltage signal with the current signal of described alternation and exports power-sensing circuit to, and power-sensing circuit carries out power detection makes the amplitude of the direct voltage that obtains meet the dc voltage value of data collection station power reguirements.
7. electric supply installation according to claim 6, it is characterized in that, described wireless energy transmitter module also comprises amplitude regulating circuit, described oscillating circuit links to each other with power amplification circuit by amplitude regulating circuit, the input of described amplitude regulating circuit is connected to the output of oscillating circuit, and the input of power amplification circuit is connected to the output of amplitude regulating circuit; Described amplitude regulating circuit receives the dominant frequency signal that oscillating circuit produces wireless transmission, and the peak-to-peak value of regulating the dominant frequency signal to be to carry out the adjusting of wireless transmission power output, and the dominant frequency signal after will regulating again exports power amplification circuit to.
8. electric supply installation according to claim 7 is characterized in that, described radio transmitter comprises the transmitting coil and first electric capacity in parallel, and choosing of described first electric capacity is satisfied:
Wherein, l is the inductance value of transmitting coil, and c is the appearance value of first electric capacity, and f is the dominant frequency that oscillating circuit produces wireless transmission.
9. electric supply installation according to claim 8, it is characterized in that, described power-sensing circuit comprises single-pole double-throw switch (SPDT), power detection resistance and digital voltmeter, described single-pole double-throw switch (SPDT) carries out the switching of power detection and power supply, described power detection resistance carries out power detection by the direct voltage two ends that single-pole double-throw switch (SPDT) is connected to ac-dc converter circuit output, described digital voltmeter is attempted by power detection resistance two ends, after power detection, by the single-pole double-throw switch (SPDT) switching of powering, with the direct voltage of ac-dc converter circuit output dc voltage value as the data collection station power reguirements; Described coupled resonant circuit comprises receiving coil and tunable capacitor in parallel, and under the adjusting of tunable capacitor, the reading of digital voltmeter should be equal to or greater than the dc voltage value of data collection station power reguirements, and the resistance of power detection resistance satisfies:
Wherein, R is the resistance of power detection resistance, V
SBe the dc voltage value of data collection station power reguirements, I
SBe data collection station maximum consumption electric current;
And/or, described electric supply installation also comprises voltage stabilizing circuit, described ac-dc converter circuit links to each other with power-sensing circuit by voltage stabilizing circuit, and the input of described voltage stabilizing circuit is connected to the output of ac-dc converter circuit, and the input of power-sensing circuit is connected to the output of voltage stabilizing circuit.
10. Geotechnical Engineering safety monitoring automatic data collection device, comprise data collection host and data collection station, described data collection station comprises the measuring circuit that is connected successively with the safety monitoring instrument, signal modulation circuit and wireless signal transmitting module, described data collection host comprises the wireless signal receiver module that connects successively, signal demodulating circuit and data storage, and be the DC power-supply circuit of each parts power supply of data collection host, it is characterized in that, this harvester also comprises the described electric supply installation of one of claim 5 to 9, wireless energy transmitter module in the described electric supply installation is arranged in the data collection host and with DC power-supply circuit and links to each other, and the wireless energy receiver module in the described electric supply installation is arranged in the data collection station to realize the power supply to the data acquisition terminal.
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| CN114301189A (en) * | 2021-12-30 | 2022-04-08 | 河北工业大学 | Wireless receiving coil circuit that charges |
| CN114301189B (en) * | 2021-12-30 | 2023-08-11 | 河北工业大学 | Wireless receiving coil circuit that charges |
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