CN117849885A - Device for detecting electric signal and magnetic signal, detection method and detector - Google Patents
Device for detecting electric signal and magnetic signal, detection method and detector Download PDFInfo
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- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
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- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
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Abstract
The invention discloses a device, a method and a detector for detecting electric signals and magnetic signals, wherein a control command is transmitted to a circuit module through a control center according to detection requirements, and a switch of the circuit module is controlled to realize on-off of a magnetic signal transmitting unit or an electric signal transmitting unit; when the magnetic signal transmitting unit works, the magnetic signal transmitting unit transmits the magnetic signal to the magnetic signal receiving unit, and the magnetic signal receiving unit converts the received magnetic signal into a type which can be processed by the control center through the data conversion unit; when the electric signal transmitting unit works, the electric signal transmitting unit transmits the electric signal to the electric signal receiving unit, the electric signal receiving unit converts the received electric signal into a type which can be processed by the control center through the data conversion unit, and the control center receives the processed electric signal and the processed magnetic signal so as to be convenient for later application. Therefore, the device provided by the invention can solve the problem that the detection device in the prior art cannot be compatible when detecting the electric signal and the magnetic signal.
Description
Technical Field
The invention belongs to the technical field of petroleum geophysical exploration, and relates to a device, a method and a detector for detecting electric signals and magnetic signals.
Background
The well far detection is developed from near well measurement to far well measurement, and the realization of the well measurement looking around, looking ahead and the well side deep/far detection is an important problem in the field of well logging at present. The seismic resolution scale of the complex oil and gas reservoirs cannot finely describe the geological structure beside and among wells, the favorable reservoir zones, the distribution of residual oil, the oil-water interface, the fault passing and lost destination layers and other oil and gas reservoir fine description problems. Conventional logging is difficult to accurately evaluate reservoirs a few meters away from the well due to limited detection depth. In addition, as exploration and development of unconventional reservoirs gradually become hot spots, engineering effect evaluation problems such as reconstruction, acid fracturing and the like of unconventional oil and gas reservoirs are increasingly prominent. In borehole time domain electromagnetic long-range exploration studies, zhou demonstrates the theoretical feasibility of transient electromagnetic long-range exploration methods. Banning uses sawtooth excitation, uses transient multicomponent induction coil system to determine formation dip and resistivity, and indicates that the borehole time domain electromagnetic method can reach 50 to 100 meters in far detection capability.
The transmitting device for electromagnetic remote detection is a transient electromagnetic instrument transmitter, practical ground transient electromagnetic instruments are popularized and applied and can be divided into low, medium and high power types, the transmitting pulse current is 0 to 50A, and the quick and linear turn-off of the transmitting current is realized by adopting a constant voltage clamping technology.
The formation feedback signals obtained by the excitation of the underground magnetic signals and the electric signals are different, the magnetic signals and the electric signals are combined and transmitted to collect magnetic field signals and electric field signals, formation information of more complete information can be obtained, multidimensional and multi-parameter measurement is realized, applicability is improved, mutual constraint is achieved, data inversion and electric profile imaging are facilitated, and a more comprehensive basis is provided for formation interpretation. However, the conventional transmitting device has an electric source transmitting circuit and a magnetic source transmitting circuit, but cannot be used compatibly.
Disclosure of Invention
The invention aims to solve the problem that a detection device in the prior art cannot be compatible when detecting electric signals and magnetic signals, and provides a device, a detection method and a detector for detecting the electric signals and the magnetic signals.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme:
the invention provides a device for detecting electric signals and magnetic signals, which comprises a control center, an electric signal receiving unit, a magnetic signal receiving unit and a data conversion unit, wherein the control center is used for controlling the electric signals and the magnetic signals;
the output port of the control center is connected with a circuit module for switching the transmission signals, the first output port of the circuit module is connected with a magnetic signal transmission unit, and the second output port of the circuit module is connected with an electric signal transmission unit; the magnetic signal receiving unit receives the magnetic signal sent by the magnetic signal transmitting unit, the electric signal receiving unit receives the electric signal sent by the electric signal transmitting unit, the output port of the magnetic signal receiving unit and the output port of the electric signal receiving unit are connected with the data conversion unit, and the output port of the data conversion unit is connected with the control center.
Preferably, the control center comprises a digital logic controller and a micro control unit;
the digital logic controller is connected with the micro control unit, an output port of the micro control unit is connected with the circuit module, and an output port of the data conversion unit is connected with an input port of the micro control unit.
Preferably, the port of the digital logic controller is also connected with an upper computer.
Preferably, the data conversion unit is an analog-to-digital converter.
Preferably, the circuit module comprises a full-bridge topology circuit, a switching circuit, an output power supply of a controllable power supply and a compensation circuit for inhibiting signal overshoot ringing; the full topology circuit comprises a first field effect transistor, a second field effect transistor, a third field effect transistor and a fourth field effect transistor, and the compensation circuit comprises a fifth field effect transistor, a sixth field effect transistor, a first resistor, a grounding resistor, a first output and a second output; the switching circuit comprises a relay, a control end power supply and a coil;
the connection point of the first field effect transistor and the second field effect transistor is used as the positive electrode of the input, the connection point of the third field effect transistor and the fourth field effect transistor is used as the negative electrode of the input, and the input end is connected with the output power supply of the controllable power supply; the connection point of the first field effect transistor and the third field effect transistor and the connection point of the second field effect transistor and the fourth field effect transistor are used as the output end of the full-bridge topology circuit, and the output end of the full-bridge topology circuit is connected with two input pins of a relay of the switching circuit; the control end power supply of the switching circuit is connected with the coil of the switching circuit, the first output end of the relay is connected with the fifth field effect transistor of the magnetic signal compensation circuit, the second output end of the relay is connected with the sixth field effect transistor of the magnetic signal compensation circuit, and the fifth field effect transistor and the sixth field effect transistor are connected with the first resistor in parallel to realize the first output of magnetic signal emission; the third output end of the relay is connected with the driving power amplifier of the electric signal, and the output end of the driving power amplifier of the electric signal generates a second output of electric signal emission with the fourth output end of the relay after passing through the grounding resistor.
Preferably, the control center, the electric signal receiving unit, the circuit module, the magnetic signal transmitting unit, the electric signal transmitting unit, the magnetic signal receiving unit, and the data converting unit are integrated on a PET substrate.
Preferably, an insulating protective shell is mounted on the outer surface of the PET substrate.
Preferably, the PET substrate is made of polyethylene terephthalate.
The invention provides a detection method of a device for detecting electric signals and magnetic signals, which comprises the following steps:
the control center sends an instruction to the circuit module to control the on-off of the magnetic signal transmitting unit or the electric signal transmitting unit;
when the magnetic signal transmitting unit works, the magnetic signal transmitting unit transmits the magnetic signal to the magnetic signal receiving unit, the data converting unit performs type conversion on the received magnetic signal, and the control center receives the processed magnetic signal;
when the electric signal transmitting unit works, the electric signal transmitting unit transmits the electric signal to the electric signal receiving unit, the data converting unit performs type conversion on the received electric signal, and the control center receives the processed electric signal.
A detector employs a device for detecting electrical and magnetic signals.
Compared with the prior art, the invention has the following beneficial effects:
according to the device for detecting the electric signal and the magnetic signal, the control command is transmitted to the circuit module through the control center according to the detection requirement, and the on-off of the magnetic signal transmitting unit or the electric signal transmitting unit is realized by controlling the switch of the circuit module; when the magnetic signal transmitting unit works, the magnetic signal transmitting unit transmits the magnetic signal to the magnetic signal receiving unit, the magnetic signal receiving unit converts the received magnetic signal into a type which can be processed by the control center through the data conversion unit, and the control center receives the processed magnetic signal. When the electric signal transmitting unit works, the electric signal transmitting unit transmits the electric signal to the electric signal receiving unit, the electric signal receiving unit converts the received electric signal into a type which can be processed by the control center through the data conversion unit, and the control center receives the processed electric signal. Therefore, the device for detecting the electric signal and the magnetic signal can solve the problem that the detection device in the prior art cannot be compatible when detecting the electric signal and the magnetic signal.
Further, the digital logic controller is connected with the upper computer, so that a worker can conveniently master detection information remotely, and a demand instruction is issued to the digital logic controller.
Further, the data conversion unit is limited to an analog-to-digital converter, so that the collected analog signals can be conveniently converted into digital signals, and the control center can conveniently process the data.
Further, an insulating protective shell is mounted on the outer surface of the PET substrate so as to protect the device from being damaged, and the protective shell is insulated so as to prevent signals from being disturbed in the transmission process.
Furthermore, the PET substrate adopts polyethylene terephthalate, so that the whole device has good flexibility, extremely stable physical properties, can stably work within the temperature range of-70 ℃ to 150 ℃, is nontoxic and odorless, is harmless to the environment, and is greatly helpful for the integration of wearable equipment.
According to the detection method of the device for detecting the electric signal and the magnetic signal, provided by the invention, the control center transmits a demand instruction to the circuit module, and the magnetic signal transmitting unit and the electric signal transmitting unit are switched on and off through the switch of the control circuit module; the detection method is simple and convenient to collect and process the electric signals and the magnetic signals.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of an apparatus for detecting electric and magnetic signals according to the present invention.
Fig. 2 is a circuit connection diagram of the circuit module of the present invention.
Wherein: the circuit comprises a 1-digital logic controller, a 2-micro control unit, a 3-upper computer, a 21-electric signal receiving unit, a 22-circuit module, a 23-magnetic signal transmitting unit, a 24-electric signal transmitting unit, a 25-magnetic signal receiving unit, a 26-data converting unit, a Q1-first field effect transistor, a Q2-second field effect transistor, a Q3-third field effect transistor, a Q4-fourth field effect transistor, a Q5-fifth field effect transistor, a Q6-sixth field effect transistor, a R1-first resistor, a R2-grounding resistor, an OUT 1-first output, an OUT 2-second output, an output power supply of an E1-controllable power supply, an LS 1-relay, a U1-control end power supply and a K-coil.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the embodiments of the present invention, it should be noted that, if the terms "upper," "lower," "horizontal," "inner," and the like indicate an azimuth or a positional relationship based on the azimuth or the positional relationship shown in the drawings, or the azimuth or the positional relationship in which the inventive product is conventionally put in use, it is merely for convenience of describing the present invention and simplifying the description, and does not indicate or imply that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the term "horizontal" if present does not mean that the component is required to be absolutely horizontal, but may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" should be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
The invention is described in further detail below with reference to the attached drawing figures:
the device for detecting the electric signal and the magnetic signal provided by the invention, as shown in fig. 1, comprises a host computer 3, a control center, an electric signal receiving unit 21, a circuit module 22, a magnetic signal transmitting unit 23, an electric signal transmitting unit 24, a magnetic signal receiving unit 25 and a data converting unit 26.
The output port of the control center is connected to the input port of the circuit module 22, and the circuit module 22 is used for switching the transmission signal. The first output port of the circuit module 22 is connected with the magnetic signal transmitting unit 23, the second output port of the circuit module 22 is connected with the electric signal transmitting unit 24, the control center sends a demand instruction to the circuit module 22, and the on-off of the magnetic signal transmitting unit 23 and the electric signal transmitting unit 24 is determined through the circuit module 22. When the magnetic signal receiving unit 25 works, the magnetic signal receiving unit 25 receives the magnetic signal sent by the magnetic signal transmitting unit 23, when the electric signal receiving unit 21 works, the electric signal receiving unit 21 receives the electric signal sent by the electric signal transmitting unit 24, the output port of the magnetic signal receiving unit 25 and the output port of the electric signal receiving unit 21 are connected with the data converting unit 26, the received electric signal and the magnetic signal are converted into data types which can be processed by the control center through the data converting unit 26, and the data converting unit 26 transmits the processed information to the control center. The data conversion unit 26 is an analog-to-digital converter, and can conveniently convert the collected analog signals into digital signals, so that the control center can conveniently process the data.
The control center comprises a digital logic controller 1 and a micro control unit 2, wherein the digital logic controller 1 is connected with the micro control unit 2 to realize bidirectional interaction; the output port of the micro control unit 2 is connected to the input port of the circuit module 22, and the output port of the data conversion unit 26 is connected to the input port of the micro control unit 2. The digital logic controller 1 is used as a control core and generates time sequence logic signals under the action of a synchronous clock, so that the on and off of a power switch in the circuit module 22 are controlled, and the signal synchronization between transmission and reception is realized. The micro control unit 2 receives the digital signal converted by the data conversion unit 26 in different transmission modes and transmits the digital signal to the digital logic controller 1. The digital logic controller 1 is connected with the upper computer 3, and a worker can conveniently master detection information remotely by arranging the upper computer 3, and issues a demand instruction to the digital logic controller 1.
The control center, the electric signal receiving unit 21, the circuit module 22, the magnetic signal transmitting unit 23, the electric signal transmitting unit 24, the magnetic signal receiving unit 25 and the data converting unit are integrated on the PET substrate, and the PET substrate is made of polyethylene terephthalate, so that the whole device has good flexibility, extremely stable physical properties, can stably work within the temperature range of-70 ℃ to 150 ℃, is nontoxic and tasteless, is harmless to the environment, and is greatly helpful for the integration of wearable equipment. An insulating protective shell is arranged on the outer surface of the PET substrate so as to protect the device from being damaged, and the protective shell is insulated so as to prevent signals from being disturbed in the transmission process.
As shown in fig. 2, the circuit module 22 is a circuit connection diagram of the circuit module 22, and the circuit module 22 includes a full-bridge topology circuit, a switching circuit, an output power supply of a controllable power supply, and a compensation circuit for suppressing signal overshoot ringing; the full topology circuit comprises a first field effect transistor Q1, a second field effect transistor Q2, a third field effect transistor Q3 and a fourth field effect transistor Q4, and the compensation circuit comprises a fifth field effect transistor Q5, a sixth field effect transistor Q6, a first resistor R1, a grounding resistor R2, a first output OUT1 and a second output OUT2; the switching circuit comprises a relay LS1, a control end power supply U1 and a coil K; the connection point of the first field effect transistor Q1 and the second field effect transistor Q2 is used as the positive electrode of the input, the connection point of the third field effect transistor Q3 and the fourth field effect transistor Q4 is used as the negative electrode of the input, and the input end is connected with the output power supply E1 of the controllable power supply; the connection point of the first field effect transistor Q1 and the third field effect transistor Q3 and the connection point of the second field effect transistor Q2 and the fourth field effect transistor Q4 are used as output ends of a full-bridge topology circuit, and the output ends of the full-bridge topology circuit are connected with two input pins of a relay LS1 of a switching circuit; the control end power supply U1 of the switching circuit is connected with the coil K of the switching circuit, the first output end of the relay LS1 is connected with the fifth field effect transistor Q5 of the magnetic signal compensation circuit, the second output end of the relay LS1 is connected with the sixth field effect transistor Q6 of the magnetic signal compensation circuit, and the fifth field effect transistor Q5 and the sixth field effect transistor Q6 are connected with the first resistor R1 in parallel to realize the first output OUT1 of magnetic signal emission; the third output end of the relay LS1 is connected with the driving power amplifier U1 of the electric signal, and the output end of the driving power amplifier U1 of the electric signal passes through the grounding resistor R2 and then generates a second output OUT2 of electric signal emission with the fourth output end of the relay LS 1.
The invention provides a detection method of a device for detecting electric signals and magnetic signals, which comprises the following steps:
the control center sends an instruction to the circuit module 22 to control the on-off of the magnetic signal transmitting unit 23 or the electric signal transmitting unit 24;
when the magnetic signal transmitting unit 23 works, the magnetic signal transmitting unit 23 transmits the magnetic signal to the magnetic signal receiving unit 25, the data converting unit 26 performs type conversion on the received magnetic signal, and the control center receives the processed magnetic signal;
when the electric signal transmitting unit 24 operates, the electric signal transmitting unit 24 transmits an electric signal to the electric signal receiving unit 24, the data converting unit 26 performs type conversion on the received electric signal, and the control center receives the processed electric signal.
As shown in fig. 2, the full-bridge topology circuit is a bridge circuit composed of 4 high-power MOSFET (field effect transistor) power switches, and the generation of the pulse current waveform is realized by controlling the on and off of the power switches. When the first field effect transistor Q1 and the fourth field effect transistor Q4 are turned on, the second field effect transistor Q2 and the third field effect transistor Q3 are turned off, and the voltage on the load is +E1; when all four MOSFETs are turned off, the voltage on the load is 0; when the first field effect transistor Q1 is turned off and the fourth field effect transistor Q4 is turned on, the second field effect transistor Q2 and the third field effect transistor Q3 are turned on, and the voltage on the load is-E1. Therefore, the emission current is rapidly and linearly reduced by controlling the on-off of the MOSFET, the turn-off time is flexible and adjustable, and different application requirements of an emission system are met. The adjustable dc power supply E1 is used to provide power required by the full-bridge topology circuit module, and can adjust different output values according to different electric signals and magnetic signals, and the output values are controlled by the data conversion unit 26.
The switching circuit is used for controlling the switching of the electric signal transmission and the magnetic signal transmission, and realizing the time-sharing transmission function between the electric signal transmission and the magnetic signal transmission. The magnetic signal transmission circuit consists of a high-power relay LS1 and a driving circuit, wherein the driving circuit comprises a control end power supply U1 and a coil K, and when the magnetic signal transmission circuit is in a magnetic signal transmission mode, the magnetic signal transmission unit 23 is driven to transmit magnetic signals through a compensation circuit. In the case of the current emission mode, the electric signal emission unit 24 is driven to emit an electric signal through the compensation circuit.
The compensation circuit suppresses the overshoot or ringing of the emission current in the emission system, so that the emission current reaches the set voltage quickly and stably. When magnetic signals are transmitted, a fifth field effect transistor Q5 and a sixth field effect transistor Q6 which are connected in series at two ends of a load are connected in parallel with a first resistor R1, and when the voltage overshoots, the voltage of the overshoots can be absorbed, so that the voltage at two ends of a transmitting line graph is kept stable; when the electric signal is transmitted, a power amplifier U1 is added at the front end of the load to improve the driving capability, and the grounding resistor R2 can be used for realizing impedance adjustment, so that the stability of the output voltage is controlled.
When electromagnetic remote detection is needed, the upper computer 3 sets corresponding magnetic emission parameters and sends the parameters to the control center, the control center makes corresponding response, the control center switches the circuit module 22 to a magnetic signal emission mode, the magnetic signal emission unit 23 emits pulse signals, the magnetic signal receiving unit 25 at the moment can generate induction signals, and stratum information can be obtained by collecting and processing the induction signals.
When resistivity measurement is required, the upper computer 3 sets corresponding current parameters and sends the current parameters to the control center, the control center makes corresponding response, the control center switches the circuit module 22 to an electric signal transmission mode, the electric signal transmission unit 24 is switched to an electrode transmission state, at this time, the electric signal receiving unit 21 receives a backflow signal, and formation resistivity information can be obtained through collecting and processing the backflow signal.
The device for detecting the electric signal and the magnetic signal provided by the invention is compatible with the transmitting circuit module for mixed transmission of the magnetic source and the electric source, and realizes the functions of transmitting the electric signal and the magnetic signal of the same device. Specific: the requirements of high-current quick turn-off are met when the magnetic signal is transmitted, the current is met when the electric signal is transmitted, and the requirements of impedance matching with the transmitting electrode are met. The device uses the same circuit module 22 to realize the time-sharing transmission of the electric signal and the magnetic signal, and realizes the conversion of the magnetic signal transmitting unit 23 and the electric signal transmitting unit 24 through the switch of the switching circuit module 22. Because the downhole instrument is a cylindrical structure with the inner diameter smaller than 80 cm and has strict requirement on the volume of a circuit, the device provided by the invention can meet the space requirement, and the device can be installed in a cylindrical protective shell with the inner diameter smaller than 80 cm by integrating a control center, an electric signal receiving unit 21, a circuit module 22, a magnetic signal transmitting unit 23, an electric signal transmitting unit 24, a magnetic signal receiving unit 25 and a data conversion unit on a PET substrate. The device for detecting the electric signal and the magnetic signal changes the power supply parameters according to different requirements of the electric source and the magnetic source, selects the electric source or the magnetic source to transmit the signals through the output switching circuit, can realize time-sharing transmission of the electric signal and the magnetic signal, and has wide application prospect in the technical field of petroleum geophysical exploration.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An apparatus for detecting electric and magnetic signals, characterized by comprising a control center, an electric signal receiving unit (21), a magnetic signal receiving unit (25) and a data converting unit (26);
the output port of the control center is connected with a circuit module (22) for switching the transmission signals, a first output port of the circuit module (22) is connected with a magnetic signal transmission unit (23), and a second output port of the circuit module (22) is connected with an electric signal transmission unit (24); the magnetic signal receiving unit (25) receives the magnetic signal sent by the magnetic signal transmitting unit (23), the electric signal receiving unit (21) receives the electric signal sent by the electric signal transmitting unit (24), the output port of the magnetic signal receiving unit (25) and the output port of the electric signal receiving unit (21) are connected with the data converting unit (26), and the output port of the data converting unit (26) is connected with the control center.
2. The device for detecting electric and magnetic signals according to claim 1, characterized in that the control center comprises a digital logic controller (1) and a micro control unit (2);
the digital logic controller (1) is connected with the micro control unit (2), an output port of the micro control unit (2) is connected with the circuit module (22), and an output port of the data conversion unit (26) is connected with an input port of the micro control unit (2).
3. The device for detecting electric signals and magnetic signals according to claim 2, wherein the port of the digital logic controller (1) is also connected with an upper computer (3).
4. The device for detecting electrical and magnetic signals according to claim 1, characterized in that the data conversion unit (26) is an analog-to-digital converter.
5. The apparatus for detecting electrical and magnetic signals according to claim 1, characterized in that the circuit module (22) comprises a full bridge topology circuit, a switching circuit, an output power supply of a controllable power supply and a compensation circuit for suppressing signal overshoot ringing; the full topology circuit comprises a first field effect transistor (Q1), a second field effect transistor (Q2), a third field effect transistor (Q3) and a fourth field effect transistor (Q4), and the compensation circuit comprises a fifth field effect transistor (Q5), a sixth field effect transistor (Q6), a first resistor (R1), a grounding resistor (R2), a first output (OUT 1) and a second output (OUT 2); the switching circuit comprises a relay (LS 1), a control end power supply (U1) and a coil (K);
the connection point of the first field effect transistor (Q1) and the second field effect transistor (Q2) is used as the positive electrode of the input, the connection point of the third field effect transistor (Q3) and the fourth field effect transistor (Q4) is used as the negative electrode of the input, and the input end is connected with the output power supply (E1) of the controllable power supply; the connection point of the first field effect transistor (Q1) and the third field effect transistor (Q3) and the connection point of the second field effect transistor (Q2) and the fourth field effect transistor (Q4) are used as output ends of a full-bridge topological circuit, and the output ends of the full-bridge topological circuit are connected with two input pins of a relay (LS 1) of the switching circuit; a control end power supply (U1) of the switching circuit is connected with a coil (K) of the switching circuit, a first output end of a relay (LS 1) is connected with a fifth field effect transistor (Q5) of the magnetic signal compensation circuit, a second output end of the relay (LS 1) is connected with a sixth field effect transistor (Q6) of the magnetic signal compensation circuit, and the fifth field effect transistor (Q5) and the sixth field effect transistor (Q6) are connected with a first resistor (R1) in parallel to realize a first output (OUT 1) of magnetic signal emission; the third output end of the relay (LS 1) is connected with the driving power amplifier (U1) of the electric signal, and the output end of the driving power amplifier (U1) of the electric signal generates a second output (OUT 2) of electric signal emission with the fourth output end of the relay (LS 1) after passing through the grounding resistor (R2).
6. The device for detecting electrical and magnetic signals according to claim 1, characterized in that the control center, the electrical signal receiving unit (21), the circuit module (22), the magnetic signal transmitting unit (23), the electrical signal transmitting unit (24), the magnetic signal receiving unit (25) and the data converting unit are integrated on a PET substrate.
7. The apparatus for detecting electrical and magnetic signals according to claim 6, wherein the outer surface of the PET substrate is provided with an insulating protective case.
8. The apparatus for detecting electrical and magnetic signals according to claim 6, wherein said PET substrate is made of polyethylene terephthalate.
9. A detection method using the apparatus for detecting an electric signal and a magnetic signal according to any one of claims 1 to 8, comprising the steps of:
the control center sends an instruction to the circuit module (22) to control the on-off of the magnetic signal transmitting unit (23) or the electric signal transmitting unit (24);
when the magnetic signal transmitting unit (23) works, the magnetic signal transmitting unit (23) transmits the magnetic signal to the magnetic signal receiving unit (25), the data converting unit (26) performs type conversion on the received magnetic signal, and the control center receives the processed magnetic signal;
when the electric signal transmitting unit (24) works, the electric signal transmitting unit (24) transmits the electric signal to the electric signal receiving unit (24), the data converting unit (26) performs type conversion on the received electric signal, and the control center receives the processed electric signal.
10. A detector, characterized in that a device for detecting electric and magnetic signals as claimed in any one of claims 1-9 is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211210920.7A CN117849885A (en) | 2022-09-30 | 2022-09-30 | Device for detecting electric signal and magnetic signal, detection method and detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211210920.7A CN117849885A (en) | 2022-09-30 | 2022-09-30 | Device for detecting electric signal and magnetic signal, detection method and detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117849885A true CN117849885A (en) | 2024-04-09 |
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ID=90538523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211210920.7A Pending CN117849885A (en) | 2022-09-30 | 2022-09-30 | Device for detecting electric signal and magnetic signal, detection method and detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117849885A (en) |
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2022
- 2022-09-30 CN CN202211210920.7A patent/CN117849885A/en active Pending
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