CN202110296U - Intelligent controller of transient electromagnetism instrument - Google Patents
Intelligent controller of transient electromagnetism instrument Download PDFInfo
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- CN202110296U CN202110296U CN2011201733321U CN201120173332U CN202110296U CN 202110296 U CN202110296 U CN 202110296U CN 2011201733321 U CN2011201733321 U CN 2011201733321U CN 201120173332 U CN201120173332 U CN 201120173332U CN 202110296 U CN202110296 U CN 202110296U
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- signal
- module
- intelligent controller
- transient electromagnetic
- electromagnetic apparatus
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Abstract
The utility model provides an intelligent controller of a transient electromagnetism instrument, mainly comprising a power module, a signal acquiring module, a man-machine exchange module and a control output module. The signal acquiring module is used for timely converting a current signal in an emission coil into a weak current signal, and the signal can be preferably acquired by a processor after being filtered; the man-machine exchange module is used for setting system parameter, timely displaying the data and storing the date in batches; and the turning on and off of a control MOSFET (metal-oxide-semiconductor field effect transistor) relay can realize the switching on and off of a receiving coil and indicating the coupling condition by an LED (light emitting diode) lamp. The controller is used for detecting the current size in the emission coil by the signal acquiring module, i.e. a system can send a signal to the control MOSFET relay when the current is less than a given numerical value (which can be input by a keyboard) to lead the receiving coil to be switched off so as to receive the signal, wherein the signal which is received at the time is nearly to be secondary field information, so that the detection precision of the transient electromagnetism can be improved.
Description
Technical field
The utility model relates to a kind of controller, the Transient Electromagnetic Apparatus of more specifically saying so intelligent controller.
Background technology
The transient electromagnetic transmitting coil is sudden power after power supply a period of time, and the electric current in the coil can momentary attenuation be not zero, but decays with the form of ramp step wave, and this section electric current that is oblique step decline is called cut-off current, is called turn-off time (t during this period of time
r).Turn-off time removes outside the Pass the circuit of taking with instrument internal has, also receive loop line electrically and the electrical influence of the earth.The influence of turn-off time to transient electromagnetic field is serious, and it has not only influenced transient electromagnetic method and has surveyed the ability of superficial part structure, and has reduced the resolution characteristic of transient electromagnetic method.And the inductance characteristic of turn-off time and loop line is closely related, and the influence of coil mutual inductance occupies larger proportion therein.
General transition appearance just begins to receive signal in the moment that the transmitting coil electric current turn-offs, owing to receive the interference of primary field, makes data distort in early days, can not be used; Though some instrument can be controlled physical record electromagnetic field scope time delay through being provided with; But owing to can't monitor the information of primary field in real time; Before data acquisition and do not know the size of turn-off time, thereby still may there be primary field information in the signal that collects of receiving coil.
Summary of the invention
In view of above-mentioned technical matters, the purpose of the utility model is to overcome the deficiency of above-mentioned prior art, and a kind of Transient Electromagnetic Apparatus intelligent controller is provided.The concrete technical scheme of this controller is following:
The Transient Electromagnetic Apparatus intelligent controller mainly comprises power module, signal acquisition module, man-machine Switching Module and control output module.
Described power module is the direct current supply pattern, and major function is the power supply that realizes microprocessor etc.
Described signal acquisition module comprises Hall current sensor and low-pass filter, and function is that the current signal in the real-time switching emission coil is a weak electric signal, after Filtering Processing, more helps the collection of processor to signal.
Described human-computer interaction module comprises microprocessor, keyboard, LCDs and E
2PROM, function is to realize the setting of systematic parameter, the real-time demonstration of data and storage in batches.
Described control output module comprises the output of control MOSFET relay; LED light output and USB communication; The closure and the disconnection of opening and turn-offing the realization receiving coil of control MOSFET relay; And through its couple state of LED lamp indication, the task with the computer upper machine communication is born in the USB communication.
The beneficial effect of the utility model is: detect the size of current in the transmitting coil through signal acquisition module; Promptly when electric current during less than certain given numerical value (can through keyboard input); System can give control MOSFET relay a signal; Make that receiving coil is closed and begin to receive signal, the signal that receive this moment is almost pure secondary field information, thereby improves the precision of surveying.
Description of drawings
Fig. 1 is the system architecture diagram of the utility model;
Fig. 2 is the power circuit diagram of the utility model;
Fig. 3 is the E of the utility model
2The PROM circuit diagram;
Fig. 4 is the micro treatment module circuit diagram of the utility model;
Fig. 5 is the signals collecting and the filtering circuit figure of the utility model;
Fig. 6 is keyboard input circuit, LCD display interface circuit, the LED light output circuit figure of the utility model;
Fig. 7 is the usb communication circuit diagram of the utility model;
Fig. 8 is the relay controlling output circuit figure of the utility model.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and be easy to understand and understand, below in conjunction with accompanying drawing, further set forth the utility model.
As shown in Figure 1, the system architecture diagram during concrete use of the said controller of the utility model is as shown in the figure.
The signals collecting part is made up of Hall element and low-pass filter circuit; It can convert the magnetic field sensor signal that induction current produced in the transmitting coil into weak electric signal in real time, through more helping collection and the identification of processor to signal after the filtering circuit filtering.
Microprocessor system adopts STM32F103R6T6 as the control core, and STM32F103R6T6 is with 32 Cortex
TM-M3CPU kernel, clock frequency can reach 72MHz, and processing speed has monocyclic hardware multiplication and division circuit up to 90Dmips and 1.25DMips/MHz, 12 analog to digital converters of its inner integrated 21 μ s switching time; E
2The PROM circuit is used for data storage, comprises the data that system is provided with etc. needs power down protection; Systematic parameter is set and the real-time demonstration of data then realizes through keyboard and LCDs.For guaranteeing the operate as normal of microprocessor, adopt the 3.3V DC power supply, power circuit is as shown in Figure 2.
Control MOSFET relay output circuit is realized the isolation of control signal and power signal through light-coupled isolation, and through its couple state of LED lamp indication, the task with the computer upper machine communication is then born in the USB communication.
In the real work, import concrete parameter through keyboard to system in advance, as setting the size that detects current value, system can store automatically after parameter is given, and shows in real time through LED.Signal acquisition module is enclosed within on the connecting line of transmitting coil and transient electromagnetic instrument, and covers, avoid the interference of noise signal with screening can; The control output module then is connected on the connecting line of receiving coil and instrument, and this moment, this circuit was in open-circuit condition; After starting working,, then will inevitably produce induced field in case there is electric current in the transmitting coil; The signals collecting part then can convert magnetic field into weak electric signal so; And through passing to microprocessor after the filtering, microprocessor can be discerned according to the given parameter of system, when induction current numerical value is less than or equal to setting value; Then can send signal to the relay output control circuit and make its closure, this moment, instrument began to receive signal.So, in the transient electromagnetic detecting process, just can avoid the interference of primary field basically, the influence that the coil mutual inductance effect brings also can slacken accordingly, and the utilization factor of image data improves, and surveying accuracy also significantly improves.
Claims (5)
1. the Transient Electromagnetic Apparatus intelligent controller is characterized in that: mainly comprise power module, signal acquisition module, man-machine Switching Module and control output module.
2. Transient Electromagnetic Apparatus intelligent controller according to claim 1 is characterized in that: 3.3V direct current supply mode is adopted in power circuit design, and microprocessor etc. is supplied power, and guarantees the normal operation of system.
3. Transient Electromagnetic Apparatus intelligent controller according to claim 1 is characterized in that: signal acquisition module is made up of bag Hall current sensor and low-pass filter circuit.
4. Transient Electromagnetic Apparatus intelligent controller according to claim 1 is characterized in that: human-computer interaction module is by microprocessor, keyboard, LCDs and E
2PROM constitutes, the setting of feasible system parameter, the real-time demonstration of data and storage in batches; Wherein microprocessor system adopts STM32F103R6T6 as the control core, and STM32F103R6T6 is with 32 Cortex
TM-M3CPU kernel, clock frequency can reach 72MHz, and processing speed has monocyclic hardware multiplication and division circuit up to 90Dmips and 1.25DMips/MHz, 12 analog to digital converters of its inner integrated 21 μ s switching time.
5. Transient Electromagnetic Apparatus intelligent controller according to claim 1; It is characterized in that: control MOSFET relay output circuit is through light-coupled isolation; Realize the isolation of control signal and power signal; And through its couple state of LED lamp indication, the task with the computer upper machine communication is then born in the USB communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201733321U CN202110296U (en) | 2011-05-23 | 2011-05-23 | Intelligent controller of transient electromagnetism instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201733321U CN202110296U (en) | 2011-05-23 | 2011-05-23 | Intelligent controller of transient electromagnetism instrument |
Publications (1)
| Publication Number | Publication Date |
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| CN202110296U true CN202110296U (en) | 2012-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201733321U Expired - Fee Related CN202110296U (en) | 2011-05-23 | 2011-05-23 | Intelligent controller of transient electromagnetism instrument |
Country Status (1)
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323621A (en) * | 2011-05-23 | 2012-01-18 | 杨光 | The Transient Electromagnetic Apparatus intelligent controller |
| CN102707321A (en) * | 2012-06-05 | 2012-10-03 | 北京工业大学 | Receiving and collecting system and method for transient electromagnetic instrument |
-
2011
- 2011-05-23 CN CN2011201733321U patent/CN202110296U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323621A (en) * | 2011-05-23 | 2012-01-18 | 杨光 | The Transient Electromagnetic Apparatus intelligent controller |
| CN102707321A (en) * | 2012-06-05 | 2012-10-03 | 北京工业大学 | Receiving and collecting system and method for transient electromagnetic instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120111 Termination date: 20120523 |