CN105182259A - Space magnetic field intensity distributed synchronous detection device and method - Google Patents
Space magnetic field intensity distributed synchronous detection device and method Download PDFInfo
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- CN105182259A CN105182259A CN201510471205.2A CN201510471205A CN105182259A CN 105182259 A CN105182259 A CN 105182259A CN 201510471205 A CN201510471205 A CN 201510471205A CN 105182259 A CN105182259 A CN 105182259A
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Abstract
The present invention discloses a space magnetic field intensity distributed synchronous detection device and method. The space magnetic field intensity distributed synchronous detection device comprises a magnet measurement node array installation panel, magnet measurement nodes and a control terminal. There are provided n rows and m columns of magnet measurement nodes arranged on the magnet measurement node array installation panel, each magnet measurement node is provided with an installation sampling holder. Control pins of all the installation sampling holders are connected with the control terminal through a control bus in such a manner to constitute a sensor array. The present invention further discloses a space magnetic field intensity distributed synchronous detection. The control terminal is configured to send a synchronous acquisition signal to all the magnet measurement nodes, the sampling holders on the magnet measurement nodes are located in the hold mode, and the control terminal is configured to acquire a magnetic field intensity of each node through a high speed roll poling method. According to the invention, the synchronous acquisition of space multi-node magnetic field intensities may be realized, the instantaneity is good and the splicing development is easy, etc. Moreover, the magnetic field detection resolution may be changed through the jump-point acquisition, and at the same time a lower sampling rate may be used for the detection of the high frequency magnetic field.
Description
Technical field
The present invention relates to a kind of space magnetic field intensity distributions formula sync detection device and method, belong to space magnetic field strength measuring technique field.
Background technology
Current almost any technical field all be unable to do without magnetic-field measurement, for wireless power transmission technology, is mainly all utilize magnetic field as the transmission channel of energy now.Therefore the research and development of measurement to wireless power transmission systems of space magnetic field have great importance, especially to magnetic resonance coupling wireless power transmission technology.
Although the method in present measurement magnetic field is a lot, seldom there is the synchronous acquisition in patent and paper how multiple spot magnetic field, implementation space.Although existing patent has the Distributed Detection relating to magnetic field, all Shortcomings.Such as: " a kind of three-dimensional field test instrument and the distributed field strength measurement device of multinode " (Authorization Notice No.: CN204065245U), although arrange that in space multiple harvester is to carry out Distributed Detection, but both do not have the design of hardware and software of the synchronous acquisition of multiple spot field intensity not provide the structural design of acquisition node array yet, do not considered the problem such as to interfere with each other of multiple spot how networking and electromagnetic field in addition yet." a kind of eddy current probe based on TMR array of magnetic field and detection method thereof " (publication number: CNIO4407047A), although improve sensitivity and the detection efficiency of detecting coil, does not solve the synchronous acquisition difficult problem in multiple spot magnetic field, space yet." multiple spot magnetic field intensity measuring instrument " (Authorization Notice No.: CN203759229U), on six faces of a square, symmetrical Surface Mount six Hall elements, come detection space multiple spot magnetic field with this.But this design exists obvious defect: the synchronous acquisition that first cannot realize at 6, secondly acquisition node number cannot increase, and can only be come the magnetic field of other positions of detection space by mobile probe, very inconvenient.
Summary of the invention
Technical matters to be solved by this invention is: provide a kind of space magnetic field intensity distributions formula sync detection device and method, by building a set of sensor network, and the synchronous acquisition of implementation space multiple spot magnetic induction density.
The present invention is for solving the problems of the technologies described above by the following technical solutions:
A kind of space magnetic field intensity distributions formula sync detection device, comprise and survey magnetic node array, control terminal, described survey magnetic node array comprises the survey magnetic node of the capable m row of n, n, m are positive integer, described survey magnetic node comprises the magnetic field sensor, signal conditioning circuit, sampling holder, A/D change-over circuit and the microprocessor that connect successively, and described sampling holder is connected with control terminal respectively with microprocessor;
Field signal is converted to electric signal by described magnetic field sensor, and be sent to signal conditioning circuit, electric signal is nursed one's health as voltage signal is sent to sampling holder by signal conditioning circuit, Microprocessor S3C44B0X A/D change-over circuit gathers the voltage signal of sampling holder maintenance and stores, and the voltage signal that microprocessor stores is read out row relax of going forward side by side by control terminal.
Further, this pick-up unit also comprises surveys magnetic node array mounting plane, and described survey magnetic node array is fixed on the wherein one side of described survey magnetic node array mounting plane.
Further, this pick-up unit also comprises pole, and described survey magnetic node installation plane is not installed the one side surveying magnetic node array and is fixed on pole.
Preferably, the shape of described survey magnetic node array mounting plane is square or rectangular.
Preferably, described signal conditioning circuit comprises buffer amplifier and programmable amplifier, the input end of described buffer amplifier is connected with the output terminal of magnetic field sensor, the output terminal of buffer amplifier is connected with the input end of programmable amplifier, and the output terminal of programmable amplifier is connected with the input end of sampling holder.
Preferably, described n, m are 6.
A kind of space magnetic field intensity distributions formula synchronization detecting method, utilizes space magnetic field intensity distributions formula sync detection device described above to realize, comprises the following steps:
Step 1, is numbered each survey magnetic node surveyed in magnetic node array by place array position, each survey magnetic node be numbered ij, i=1 ~ n, j=1 ~ m;
Step 2, select the current survey magnetic node needing work, and send synchronous acquisition signal to the current survey magnetic node of work that needs, make the sampling holder in the survey magnetic node of work at present be in hold mode, the sampling holder in the survey magnetic node that other do not work is in wait or halted state;
Step 3, current voltage signal keeps by sampling holder, gathers to be sampled voltage signal that retainer maintains and to go forward side by side row relax.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
1, space magnetic field intensity distributions formula sync detection device of the present invention and method, add sampling holder at each acquisition channel, and construct a set of sensor network, and achieve the synchronous acquisition of space multiple spot magnetic induction density, real-time is good.
2, space magnetic field intensity distributions formula sync detection device of the present invention and method, has reserved pole during the structural design of pick-up unit, has the advantages such as easily splicing expansion, and can change magnetic field detection resolution by hop collection.
3, space magnetic field intensity distributions formula sync detection device of the present invention and method, the array architecture of pick-up unit can to realize with lower sampling rate, to detect high frequency magnetic field, reducing the requirement of the speed to hardware Acquisition Circuit.
Accompanying drawing explanation
Fig. 1 is the structural drawing of space magnetic field intensity distributions formula sync detection device of the present invention.
Fig. 2 is the networking block diagram that space magnetic field intensity distributions formula of the present invention synchronously detects.
Fig. 3 is a kind of implementation schematic diagram surveying magnetic node in pick-up unit of the present invention.
Fig. 4 is a kind of implementation schematic diagram of sampling holder in pick-up unit of the present invention.
Wherein: 1 for surveying magnetic node array mounting plane, and 2 for surveying magnetic node, and 3 is pole, and 4 is bus, and 5 is control terminal, and 6 is magnetic field sensor, and 7 is signal conditioning circuit, and 8 is sampling holder, and 9 is A/D change-over circuit, and 10 is microprocessor.
Embodiment
Be described below in detail embodiments of the present invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
As shown in Figure 1, a kind of space magnetic field intensity distributions formula sync detection device comprises surveys magnetic node array mounting plane 1, and survey magnetic node 2, pole 3, bus 4(comprises control bus, data bus) and control terminal 5.
Above-mentioned survey magnetic node 2 comprises magnetic field sensor 6, signal conditioning circuit 7, sampling holder 8, A/D change-over circuit 9, microprocessor 10.Described magnetic field sensor is connected with signal conditioning circuit, and signal conditioning circuit is connected with sampling holder, and sampling holder is connected with A/D change-over circuit, and A/D change-over circuit is connected with microprocessor.As shown in Figure 3, in this example, magnetic field sensor is based on Faraday's electromagnetic induction law, namely changes magnetic signal into electric signal by inductive coil.Induction current is converted into voltage signal by the noninductive resistance R of little resistance of connecting at coil two ends by this example, sends into the signal conditioning circuit of rear class, sends into sampling holder after conditioning.
The chip microcontroller ADC of built-in ADC, the function of microprocessor is used in this example.In this example, they are made signal processing circuit printed board.
In this example, signal conditioning circuit comprises the buffer amplifier based on OPA842 and the programmable amplifier based on AD603.The faint telecommunications that above-mentioned magnetic field sensor coil exports by signal conditioning circuit sends into sampling holder after amplifying.As shown in Figure 4, in this example, sampling holder builds based on OPA615.
Above-mentioned survey magnetic node array is multiple identical survey magnetic nodes, is evenly arranged into sensor array in n capable m row mode, and get n=m=6 totally 36 survey magnetic nodes in this example, the spacing between adjacent survey magnetic node is 13 centimetres.By above-mentioned pole, survey magnetic node array mounting plane is fixed in testing base.In this example, control terminal is connected with the sensor array by 485 buses.Above-mentioned control terminal is the upper computer software based on LabVIEW exploitation.
As shown in Figure 2, a kind of space magnetic field intensity distributions formula synchronization detecting method, this example is implemented to comprise the steps:
Steps A, first numbers in order by the survey magnetic node surveyed on magnetic node array mounting plane, and will survey magnetic node (11 to nm) and be connected to form sensor array by bus, requires that the numbering of the survey magnetic node in bus is not identical;
Step B, selects the current survey magnetic node needing work, changes the resolution of magnetic field detection;
Step C, control terminal sends a synchronous acquisition signal to survey magnetic node array by 485 buses;
Step D, after the survey magnetic node of carry in bus receives this synchronous acquisition signal simultaneously, the sampling holder of each survey magnetic node is in hold mode;
Step e, then Single-chip Controlling ADC gathers the voltage signal be kept, and stores;
Step F, then Single-chip Controlling sampling holder is in following state, continues the change following the tracks of field signal;
Step G, last control terminal reads out storage field intensity data in the microprocessor by 485 buses successively with the method for high speed poll, and carries out follow-up process and display;
Step H, if want to continue to detect magnetic induction density, returns step C, so can the continuous synchronization collection of implementation space magnetic field intensity; Otherwise all survey magnetic nodes are all in waiting status or quit work.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (7)
1. a space magnetic field intensity distributions formula sync detection device, it is characterized in that: comprise and survey magnetic node array, control terminal, described survey magnetic node array comprises the survey magnetic node of the capable m row of n, n, m are positive integer, described survey magnetic node comprises the magnetic field sensor, signal conditioning circuit, sampling holder, A/D change-over circuit and the microprocessor that connect successively, and described sampling holder is connected with control terminal respectively with microprocessor;
Field signal is converted to electric signal by described magnetic field sensor, and be sent to signal conditioning circuit, electric signal is nursed one's health as voltage signal is sent to sampling holder by signal conditioning circuit, Microprocessor S3C44B0X A/D change-over circuit gathers the voltage signal of sampling holder maintenance and stores, and the voltage signal that microprocessor stores is read out row relax of going forward side by side by control terminal.
2. space magnetic field intensity distributions formula sync detection device as claimed in claim 1, is characterized in that: this pick-up unit also comprises surveys magnetic node array mounting plane, and described survey magnetic node array is fixed on the wherein one side of described survey magnetic node array mounting plane.
3. space magnetic field intensity distributions formula sync detection device as claimed in claim 2, is characterized in that: this pick-up unit also comprises pole, and described survey magnetic node installation plane is not installed the one side surveying magnetic node array and is fixed on pole.
4. space magnetic field intensity distributions formula sync detection device as claimed in claim 2, is characterized in that: the shape of described survey magnetic node array mounting plane is square or rectangular.
5. space magnetic field intensity distributions formula sync detection device as claimed in claim 1, it is characterized in that: described signal conditioning circuit comprises buffer amplifier and programmable amplifier, the input end of described buffer amplifier is connected with the output terminal of magnetic field sensor, the output terminal of buffer amplifier is connected with the input end of programmable amplifier, and the output terminal of programmable amplifier is connected with the input end of sampling holder.
6. space magnetic field intensity distributions formula sync detection device as claimed in claim 1, is characterized in that: described n, m are 6.
7. a space magnetic field intensity distributions formula synchronization detecting method, utilizes space magnetic field intensity distributions formula sync detection device as claimed in claim 1 to realize, it is characterized in that: comprise the following steps:
Step 1, is numbered each survey magnetic node surveyed in magnetic node array by place array position, each survey magnetic node be numbered ij, i=1 ~ n, j=1 ~ m;
Step 2, select the current survey magnetic node needing work, and send synchronous acquisition signal to the current survey magnetic node of work that needs, make the sampling holder in the survey magnetic node of work at present be in hold mode, the sampling holder in the survey magnetic node that other do not work is in wait or halted state;
Step 3, current voltage signal keeps by sampling holder, gathers to be sampled voltage signal that retainer maintains and to go forward side by side row relax.
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Cited By (5)
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| CN105607015A (en) * | 2016-01-19 | 2016-05-25 | 三峡大学 | Three-dimensional space magnetic-field measurement system |
| CN106562785A (en) * | 2016-09-26 | 2017-04-19 | 中国人民解放军国防科学技术大学 | Space multi-point magnetic field intensity measurement apparatus and method based on single magnetic sensor |
| CN106772136A (en) * | 2017-01-23 | 2017-05-31 | 华北水利水电大学 | A kind of array scanning and acquisition control system |
| CN107271935A (en) * | 2017-06-29 | 2017-10-20 | 南京信息工程大学 | A kind of magnetic resonance coupling spatial high-frequency magnetic field intensity measurement apparatus and method |
| CN111158055A (en) * | 2019-12-31 | 2020-05-15 | 浙江大学 | Three-dimensional magnetic source dynamic detection system and detection method |
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| CN107271935A (en) * | 2017-06-29 | 2017-10-20 | 南京信息工程大学 | A kind of magnetic resonance coupling spatial high-frequency magnetic field intensity measurement apparatus and method |
| CN111158055A (en) * | 2019-12-31 | 2020-05-15 | 浙江大学 | Three-dimensional magnetic source dynamic detection system and detection method |
| CN111158055B (en) * | 2019-12-31 | 2021-03-05 | 浙江大学 | Three-dimensional magnetic source dynamic detection system and detection method |
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