CN102176635B - 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 Monitoring automatic data collection device and method of supplying power to and electric supply installation.
Background technology
In the Geotechnical Monitoring technical 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, referring to power industry standard DL/T5211-2005).
The automatic data collection device that the field of safety monitoring is at present used, be to power by modes such as backup battery, wired power supply, solar cells, and these supply power modes all have some limitations.Wherein: 1. the backup battery mode is powered, and owing to being subject to battery accumulate capacity limit, needs regular replacing battery to maintain the normal power supply demand of automatic data collection device; 2. wired power supply, need cable wiring manufacture and reliable power supply, in some engineering occasion, not too easily realizes; 3. solar cell for supplying power, need the equipment such as increase solar panel, energy storage battery, charge management module, increased cost and the difficulty of engineering construction, reduced the reliability of system due to solar panel simultaneously, 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 used in the Geotechnical 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 Monitoring automatic data collection device, and the Geotechnical 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 Monitoring automatic data collection device, described Geotechnical Monitoring automatic data collection device comprises data collection host and data collection station, it is characterized in that, the method comprises the steps:
A, produce the dominant frequency signal of wireless transmission by oscillating circuit in data collection host, then after this dominant frequency signal is carried out to power amplification, by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave;
B, data collection station receive this electromagnetic wave, and its electromagnetic energy is converted into to 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, the supply power voltage that described direct voltage is 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 by power-sensing circuit, carrying out power detection and make the amplitude of the direct voltage of acquisition meet the DC voltage value of data collection station power reguirements.
In steps A, produce the dominant frequency signal of wireless transmission by oscillating circuit in data collection host after, also comprise that the peak-to-peak value of regulating the dominant frequency signal is to carry out the adjusting of wireless transmission power output, then the dominant frequency signal after regulating is carried out to power amplification.
A kind of electric supply installation of Geotechnical Monitoring automatic data collection device, described Geotechnical 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 data collection host arranged of data collection host is connected, and the wireless energy receiver module arranged in data collection station, 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 by this dominant frequency signal, then by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave, described wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into to direct current energy, to realize the 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 by the current signal of described alternation and exports power-sensing circuit to, and power-sensing circuit carries out power detection and makes the amplitude of the direct voltage of acquisition meet the DC voltage value of data collection station power reguirements.
Described wireless energy transmitter module also comprises amplitude regulating circuit, described oscillating circuit is connected 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, then exports the dominant frequency signal after regulating to power amplification circuit.
Described radio transmitter comprises transmitting coil in parallel and the first electric capacity, and choosing of described the first electric capacity is satisfied:
wherein, the inductance value that l is transmitting coil, the appearance value that c is the first electric capacity, 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, power detection is carried out at the direct voltage two ends that described power detection resistance is connected to ac-dc converter circuit output by single-pole double-throw switch (SPDT), described digital voltmeter is attempted by power detection resistance two ends, after power detection, carry out power switching by single-pole double-throw switch (SPDT), the DC voltage value using the direct voltage of ac-dc converter circuit output as the data collection station power reguirements; Described coupled resonant circuit comprises receiving coil in parallel and tunable capacitor, 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 meets:
wherein, the resistance that R is power detection resistance, V
sfor the DC voltage value of data collection station power reguirements, I
sfor data collection station maximum consumption electric current;
And/or, described electric supply installation also comprises voltage stabilizing circuit, described ac-dc converter circuit is connected 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 Monitoring automatic data collection device, comprise data collection host and data collection station, described data collection station comprises the measuring circuit be connected successively with safety monitoring instrument, signal modulation circuit and wireless signal transmitting module, described data collection host comprises the reception of wireless signals module connected 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 described electric supply installation is arranged in data collection host and is connected with DC power-supply circuit, wireless energy receiver module in described electric supply installation is arranged in 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 Monitoring automatic data collection device the present invention relates to, produce the dominant frequency signal of wireless transmission by oscillating circuit in data collection host, after again this dominant frequency signal being carried out to power amplification, by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave; Receive this electromagnetic wave by data collection station again, and its electromagnetic energy is converted into to direct current energy, to realize the power supply to 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 configure 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, without power line is set, also needn't set up the equipment such as solar panel, energy storage battery, charge management module, reduce the system maintenance work amount, there is the practical significance of engineering application.
The electric supply installation of this Geotechnical Monitoring automatic data collection device the present invention relates to, be included in the wireless energy transmitter module arranged in data collection host, and the wireless energy receiver module arranged in data collection station, 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 by this dominant frequency signal, by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave, the wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into to direct current energy, to realize the power supply to the data acquisition terminal.This electric supply installation can make data collection station not need to configure the power-supply devices such as backup battery, wired power supply, solar cell, overcome the limitation that existing device with multiple power supplier exists, saved the trouble of wired power supply cable wiring manufacture and periodic replacement or battery maintenance, effectively solve the powerup issue of Geotechnical Monitoring automatic data collection device, and have easy to use, the advantage that cost is low, have the practical significance that engineering is applied.
The Geotechnical Monitoring automatic data collection device of the above-mentioned electric supply installation of employing 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 effectively solved the cable distribution construction of Geotechnical Monitoring automatic data collection device and two large technical barriers of power supply.
The accompanying drawing explanation
The preferred flow charts of the method for supplying power to that Fig. 1 is Geotechnical Monitoring automatic data collection device of the present invention.
The preferred structure schematic diagram of the wireless energy transmitter module that Fig. 2 is electric supply installation of the present invention.
The preferred structure schematic diagram of the wireless energy receiver module that Fig. 3 is electric supply installation of the present invention.
The structural representation that Fig. 4 is Geotechnical Monitoring automatic data collection device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention will be described.
Geotechnical Monitoring automatic data collection device comprises data collection host and data collection station, the method for supplying power to preferred flow charts that Fig. 1 is Geotechnical Monitoring automatic data collection device of the present invention, and this method of supplying power to comprises the steps:
A, produce the dominant frequency signal of wireless transmission by oscillating circuit in data collection host, 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, then the dominant frequency signal after regulating is carried out to power amplification, then by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave;
B, data collection station receive this electromagnetic wave, and its electromagnetic energy is converted into to direct current energy, to realize the 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, then by power-sensing circuit, carries out power detection and make the amplitude of the direct voltage of acquisition meet the DC voltage value of data collection station power reguirements.
The present invention relates to a kind of electric supply installation of Geotechnical Monitoring automatic data collection device, effectively solve the powerup issue of Geotechnical Monitoring automatic data collection device, this electric supply installation comprises the wireless energy transmitter module be arranged in data collection host and the wireless energy receiver module be arranged in data collection station, the wireless energy transmitter module transfers to data collection station by energy with the form of emitting electromagnetic wave, the wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into to direct current energy, to realize the 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.
In Fig. 2, Vin+, Vin-are expressed as respectively positive pole and the negative pole of the direct current supply voltage in the DC power-supply circuit in data collection host, the direct current of DC power-supply circuit output produces the dominant frequency signal of wireless transmission by crystal oscillating circuit, 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 by the mode of PWM pulse-width modulation the adjusting of wireless transmission power output to carry out the adjusting of wireless transmission power output; Dominant frequency signal after amplitude regulating circuit carries out power amplification by power amplification circuit, drives radio transmitter 1 that energy is launched, and by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave.Radio transmitter 1 comprises transmitting coil in parallel and the first electric capacity, and the inductance value of establishing transmitting coil is l (after transmitting coil completes, l is exactly a definite value), and the appearance value of the first electric capacity is c, and choosing of the first electric capacity should meet:
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.
In Fig. 3, coupled resonant circuit 2 comprises receiving coil in parallel and tunable capacitor, 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, 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, through the AC/DC change-over circuit, is exported a DC voltage value (V+～V-); For obtaining best energy reception, 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, this power-sensing circuit 3 carries out power detection and makes the amplitude of the direct voltage of acquisition meet 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 to the end of moved end S-2 not, carry out power switching, when moved end S-1 throws to the end of moved end S-3 not, carry out the power detection switching, 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, regulate the appearance value c ' of tunable capacitor, makes the reading of digital voltage Table V be equal to or greater than V
s.Because the resistance of power detection resistance R is according to V
sunder condition of power supply, data collection station maximum consumption electric current I
sarrange, the resistance of power detection resistance R meets:
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 the end to S-2, carries out power switching, the DC voltage value using the direct voltage of AC/DC change-over circuit output as the data collection station power reguirements, the digital voltage Table V is removed in the power supply of realization to the data acquisition terminal simultaneously.
Above-mentioned wireless energy receiver module can also arrange voltage stabilizing circuit at the output of AC/DC change-over circuit, the AC/DC change-over circuit is connected 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 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 be connected successively with safety monitoring instrument, data collection host 4 comprises the reception of wireless signals module connected successively, signal demodulating circuit and data storage, also comprise the controller be connected with data storage, and be the DC power-supply circuit of each parts power supply of data collection host 4, this Geotechnical Monitoring automatic data collection device adopts electric supply installation of the present invention to realize the power supply 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 data collection host 4 and is connected with DC power-supply circuit, the wireless energy transmitter module transfers to data collection station 5 by energy with the form of emitting electromagnetic wave, the wireless energy receiver module is arranged in 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 to direct current energy, to realize the power supply to data acquisition terminal 5.
This Geotechnical 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 data collection host in Zigbee automatic data collection device, increase the wireless energy transmitter module, in 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 making, retained the ripe wireless telemetry technique of original ZigBee radio communication, wireless networking, realizes wireless power owing to having increased electric supply installation simultaneously.
The operation principle of this Geotechnical Monitoring automatic data collection device of the present invention is as follows: data collection host 4, the inner wireless energy transmitter module by it, produced the dominant frequency signal of wireless transmission by oscillating circuit, after again this dominant frequency signal being carried out to power amplification, by radio transmitter by energy the form with emitting electromagnetic wave, the wireless energy receiver module of energy data collection station 5 inside that to pass to data collection host 4 distance be L.The wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into to 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 by power-sensing circuit, carrying out power detection makes the amplitude of the direct voltage of acquisition meet the DC voltage value of data collection station 5 power reguirements, the wireless power of realization to data acquisition terminal 5, the measuring circuit of data collection station 5 inside starts and measures after obtaining electric energy, obtain the measurement data of safety monitoring instrument, measurement data is interior through after signal modulation, by wireless signal transmitting module, with the form of radio magnetic wave, sending to data collection host 4 at data collection station 5, reception of wireless signals module by data collection host 4 inside receives electromagnetic wave, and obtain measurement data by signal demodulating circuit, then preserve measurement data by data storage, 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 effectively solved the cable distribution construction of automatic data collection device and the two large technical barriers of powering.
Complete course of work of the automatic data collection device of the present embodiment is as follows: when starting measurement, data collection host 4, by the wireless energy transmitter module, first send electric energy to data collection station 5, data collection station 5 after obtaining electric energy, the electronic circuit work in log-on data acquisition terminal 5.Data collection host 4 is realized communication connection with data collection station 5 by the ZigBee communication mode, realizes the mutual and transmission of data, information.The work order indication that data collection station 5 sends according to data collection host 4, realize the functions such as Safety Monitoring Instruments measurement, data processing, data upload.After data acquisition work, cancelled 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 Monitoring automatic data collection device finishes this data collection task.
This Geotechnical Monitoring automatic data collection device of the present invention is when reality is used, data collection host 4 can be made and fix according to the needs of field condition and engineering, can be also mobile, a data collection host 4 can be used according to acquisition terminal 5 pairings with many number of units simultaneously, realizes being used in conjunction with of one-to-many.
Claims (7)
1. the method for supplying power to of a Geotechnical Monitoring automatic data collection device, described Geotechnical Monitoring automatic data collection device comprises data collection host and data collection station, it is characterized in that, the method comprises the steps:
A, produce the dominant frequency signal of wireless transmission by oscillating circuit in data collection host, then after this dominant frequency signal is carried out to power amplification, by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave;
B, data collection station receive this electromagnetic wave by coupled resonant circuit and export the current signal of alternation, by ac-dc converter circuit, the current signal of described alternation is converted to d. c. voltage signal again, the supply power voltage that described direct voltage is data collection station, then carry out power detection by power-sensing circuit and make the amplitude of the direct voltage of acquisition meet the DC voltage value of data collection station power reguirements, to realize the power supply to the data acquisition terminal; 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 is connected to the direct voltage two ends by single-pole double-throw switch (SPDT) and carries out power detection, described digital voltmeter is attempted by power detection resistance two ends, after power detection, carry out power switching by single-pole double-throw switch (SPDT), the DC voltage value using direct voltage as the data collection station power reguirements; Described coupled resonant circuit comprises receiving coil in parallel and tunable capacitor, 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 meets:
wherein, the resistance that R is power detection resistance, V
sfor the DC voltage value of data collection station power reguirements, I
sfor data collection station maximum consumption electric current.
2. method of supplying power to according to claim 1, it is characterized in that, in steps A, produce the dominant frequency signal of wireless transmission by oscillating circuit in data collection host after, also comprise that the peak-to-peak value of regulating the dominant frequency signal is to carry out the adjusting of wireless transmission power output, then the dominant frequency signal after regulating is carried out to power amplification.
3. the electric supply installation of a Geotechnical Monitoring automatic data collection device, described Geotechnical 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 data collection host arranged of data collection host is connected, and the wireless energy receiver module arranged in data collection station, 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 by this dominant frequency signal, then by radio transmitter, energy is transferred to data collection station with the form of emitting electromagnetic wave, described wireless energy receiver module receives this electromagnetic wave, and its electromagnetic energy is converted into to direct current energy, to realize the 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, 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 by the current signal of described alternation and exports power-sensing circuit to, power-sensing circuit carries out power detection and makes the amplitude of the direct voltage of acquisition meet the DC voltage value of data collection station power reguirements, 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, power detection is carried out at the direct voltage two ends that described power detection resistance is connected to ac-dc converter circuit output by single-pole double-throw switch (SPDT), described digital voltmeter is attempted by power detection resistance two ends, after power detection, carry out power switching by single-pole double-throw switch (SPDT), the DC voltage value using the direct voltage of ac-dc converter circuit output as the data collection station power reguirements, described coupled resonant circuit comprises receiving coil in parallel and tunable capacitor, 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 meets:
wherein, the resistance that R is power detection resistance, V
sfor the DC voltage value of data collection station power reguirements, I
sfor data collection station maximum consumption electric current.
4. electric supply installation according to claim 3, it is characterized in that, described wireless energy transmitter module also comprises amplitude regulating circuit, described oscillating circuit is connected 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, then exports the dominant frequency signal after regulating to power amplification circuit.
5. electric supply installation according to claim 4, is characterized in that, described radio transmitter comprises transmitting coil in parallel and the first electric capacity, and choosing of described the first electric capacity is satisfied:
wherein, the inductance value that l is transmitting coil, the appearance value that c is the first electric capacity, f is the dominant frequency that oscillating circuit produces wireless transmission.
6. electric supply installation according to claim 5, it is characterized in that, described electric supply installation also comprises voltage stabilizing circuit, described ac-dc converter circuit is connected with power-sensing circuit by voltage stabilizing circuit, 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.
7. a Geotechnical Monitoring automatic data collection device, comprise data collection host and data collection station, described data collection station comprises the measuring circuit be connected successively with safety monitoring instrument, signal modulation circuit and wireless signal transmitting module, described data collection host comprises the reception of wireless signals module connected 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 3 to 6, wireless energy transmitter module in described electric supply installation is arranged in data collection host and is connected with DC power-supply circuit, wireless energy receiver module in described electric supply installation is arranged in data collection station to realize the power supply to the data acquisition terminal.
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| CN2011100333364A CN102176635B (en) | 2011-01-30 | 2011-01-30 | Automatic acquisition device for safety monitoring data as well as power-supply method and device thereof |
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| CN2011100333364A CN102176635B (en) | 2011-01-30 | 2011-01-30 | Automatic acquisition device for safety monitoring data as well as power-supply method and device thereof |
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