CN117092133A - Detection system and detection method based on energy storage plate - Google Patents
Detection system and detection method based on energy storage plate Download PDFInfo
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Abstract
The utility model provides a detecting system and detecting method based on energy storage board, relates to the measurement technology field, and a detecting system based on energy storage board, and transmitting antenna array and coaxial line array divide the both sides and symmetry of living in infrared ray fiber array, and infrared ray fiber array is at the positive perpendicular projection face of energy storage board, coincides with transmitting antenna array and coaxial line array at the positive microwave reflection face of transmission and receipt of energy storage board, synchronous detection improves detection efficiency. The detection method of the detection system based on the energy storage plate comprises the steps that microwave detection digital signals are input to a digital signal processor to form an image of the interior of the energy storage plate through calculation; the digital signal processor starts the infrared thermal imager, the infrared optical fiber array collects infrared rays of the energy storage plate, and the infrared optical fiber array transmits the infrared rays to the infrared thermal imager to form a heat distribution image outside the energy storage plate. The infrared ray and the microwave imaging mutually verify the inside and the outside of the energy storage plate, so that the detection capability of the energy storage plate is enhanced, and the recognition rate of a target is improved.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a detection system and a detection method based on an energy storage plate.
Background
When detecting the working state and fault condition of the energy storage plate, the energy storage plate is usually installed in relatively closed equipment or system, so that the working state of the energy storage plate is difficult to directly observe, and the working state of the energy storage plate is difficult to accurately measure; the working state and fault condition of the energy storage plate may be affected by various factors, such as ambient temperature, service conditions, etc., so that when the detection is performed, the accuracy and reliability of the detection method need to be ensured, so as to accurately judge the working state and fault condition of the energy storage plate, and the detection accuracy is not high and the reliability is low.
Meanwhile, aiming at the application number: 201810499054.5, name of invention: the nondestructive detection method for the structural defects of the non-conductive product can only be used on a product production line, uses a field Jing Shouxian, adopts microwave heating, and has high energy consumption.
Disclosure of Invention
Aiming at least one of the problems is solved, and the invention aims to provide a detection system and a detection method based on an energy storage plate by collecting infrared imaging on the surface of the energy storage plate, detecting the outer surface of the energy storage plate, reflecting the energy storage plate by transmitting microwaves, collecting reflected microwave imaging, detecting the inside of the energy storage plate, and carrying out mutual verification detection on the same side of the energy storage plate by infrared rays and microwaves, thereby improving the detection accuracy, improving the use flexibility and miniaturization of detection equipment.
The technical solution for realizing the purpose of the invention is as follows:
an energy storage plate-based detection system, comprising: the device comprises an optical fiber, a coaxial line, a digital signal processor DSP, a digital-to-analog converter DAC, an analog-to-digital converter ADC, a MOS tube, a radio frequency emission module and an antenna, wherein the optical fiber comprises an optical fiber array for transmitting infrared rays, the coaxial line comprises a coaxial line array, the antenna comprises an emission antenna array and a receiving antenna array, the output end of the digital signal processor DSP is connected with the input end of a first digital-to-analog converter DAC, the output end of the first digital-to-analog converter DAC is connected with the input end of the radio frequency emission module, and the output end of the radio frequency emission module is connected with the emission antenna array; each coaxial line is coupled with a receiving antenna, the coupling part is matched with metal rings to shield the overflow and interference of microwaves, the coaxial line arrays are in one-to-one correspondence according to the row-column sequence and are coupled to the receiving antenna arrays, the coupling part adopts the matched metal ring arrays, each antenna in the receiving antenna arrays is mutually independent, each antenna is sequentially and one-to-one correspondence connected with one MOS tube according to the row-column sequence to form an MOS tube array, the output end of a digital signal processor DSP is connected with the input end of a second digital-to-analog converter DAC, the output end of the second digital-to-analog converter DAC is expanded, the output end of the second digital-to-analog converter DAC is sequentially and one-to-one correspondence connected with the grid electrode (G) of the MOS tube array according to the row-column sequence, the output end of the MOS tube array is connected with the input end of a filter, the output end of the filter is connected with the input end of a first analog-to-digital converter ADC, and the output end of the first analog-to-digital converter ADC is connected with the input end of the digital signal processor DSP; the infrared optical fiber array is perpendicular to the front surface of the energy storage plate and is connected to the infrared thermal imager which is connected with the digital signal processor DSP; the transmitting antenna array and the coaxial line array are respectively arranged on two sides of the infrared optical fiber array and are symmetrical, and the vertical projection surface of the infrared optical fiber array on the front surface of the energy storage plate coincides with the microwave reflection surfaces of the transmitting antenna array and the coaxial line array on the front surface of the energy storage plate for transmitting and receiving; it should be noted that, the output end of the digital signal processor DSP (Digital Signal Processor) is connected to the input end of the first digital-to-Analog converter DAC (Analog-to-digital converter), and converts the digital signal into an Analog signal for output, the digital-to-Analog converter is an electronic device for converting the digital signal into an Analog signal for processing or outputting in an Analog circuit, and in the digital signal processor DSP, the output digital signal is converted into an Analog signal by the digital-to-Analog converter DAC, and then amplified and filtered by the Analog circuit, and finally output to the output port of the external device. The output end of the first digital-to-analog converter DAC is connected with the input end of the radio frequency transmitting module, and the output end of the radio frequency transmitting module is connected with the transmitting antenna array; the connection mode is that digital signals are converted into analog signals through an analog-to-digital converter DAC, then the analog signals are converted into radio frequency signals through a radio frequency transmitting module, and finally the wireless signals are transmitted through a transmitting antenna array; the specific connection mode is that the output end of the DAC is connected with the input end of the radio frequency transmitting module, the output end of the radio frequency transmitting module can be connected with the transmitting antenna array through a cable, a connector and the like, and therefore signal transmission is achieved. The coaxial lines are arranged into a coaxial line array according to rows and columns, each coaxial line is coupled with a receiving antenna, the coupling part is matched with a metal ring to shield the overflow and interference of microwaves, the coaxial line array corresponds to and is coupled to the receiving antenna array one by one according to the row and column sequence, the coupling part adopts the matched metal ring array, the receiving antenna array converts microwave signals into electric signals, each antenna is connected with one MOS tube one by one according to the row and column sequence to form an MOS tube array, the output signals of each MOS tube array can be processed and analyzed through a signal processing circuit, the coaxial line array is used for transmitting the microwave signals, the microwave signals are transmitted from a transmitting end to a receiving end, the transmitting end is one end of the coaxial line array, after microwaves are reflected by an energy storage plate, the receiving antenna array is used for receiving the transmitted microwave signals, and the signals are transmitted to the corresponding MOS tubes; the signals received by each MOS may be amplified, filtered, etc., and then further processed and analyzed by a signal processing circuit. The output end of the digital signal processor DSP is connected with the input end of the second digital-to-analog converter DAC, and the output port of the second digital-to-analog converter DAC is expanded, depending on the type of interface of the Digital Signal Processor (DSP) and the digital-to-analog converter DAC used and the system requirement, the following expansion method is adopted: the parallel interface expands the output port of the second digital-to-analog converter DAC: if a parallel interface is used between the DSP and DAC, the output ports of the DAC can be extended by adding more data lines, which can increase the number of output channels of the DAC to some extent, but it is necessary to ensure that the interface types and data bandwidths of the DSP and DAC support the extension. The serial interface extends the output port of the second digital to analog converter DAC: if a serial interface (such as SPI or I2S) is used between the DSP and the DAC, the output port can be expanded by connecting a plurality of DACs in series; each DAC may be connected to an output pin of the DSP and data is transferred via a serial interface, which may enable a linear increase in the number of DAC output channels, but requires adaptations in terms of hardware design and software driving. The DSPs are connected with the DAC in parallel, and the output port of the DAC of the second digital-to-analog converter is expanded: if the system requires a higher number of output channels, it is conceivable to use several DSPs and DACs connected in parallel, for example 5 or 10, each DSP controlling one DAC and exchanging data via a bus or network; this approach allows for expansion of high channel numbers, but requires adaptation in terms of system design and communication protocols; whichever extension method is selected, compatibility and suitability in terms of hardware and software need to be considered; in addition, attention is paid to the problems of timing requirements of the system, design of power and ground lines, signal interference and the like so as to ensure the performance and stability of the expanded system. The output ports of the second digital-to-analog converter DAC are sequentially and correspondingly connected with the grid electrodes (G) of the MOS tube arrays one by one according to the row-column sequence, so that the on and off of each MOS tube can be controlled, and the control of the MOS tube arrays is realized; the drain electrode (D) of the N-type MOS tube is connected with an antenna in the receiving antenna array, the source electrode (S) of the N-type MOS tube is connected with the filter, and the output voltage of the DAC is controlled to control the grid voltage of the MOS tube, so that the on and off of the MOS tube are controlled. Detection on the same side of the energy storage plate is beneficial to detecting that the energy storage plate is installed in relatively closed equipment or system, and the working state of the energy storage plate can be directly observed.
Further, a coaxial line is coupled with a receiving antenna, the receiving antenna converts microwaves into electric signals, the drain electrode (D) of the N-type MOS tube is connected with the output end of the receiving antenna, the electric signals of the receiving antenna enter the drain electrode (D) of the N-type MOS tube, the source electrode (S) of the N-type MOS tube is connected to the input end of the filter, the output end of the filter is connected to the input end of the amplifier, and the output end of the amplifier is connected to the input end of the first analog-digital converter ADC; the coaxial line array is in one-to-one correspondence according to a row-column sequence and is coupled to the receiving antenna array, each coaxial line is in one-to-one correspondence and is coupled with a unique receiving antenna, each receiving antenna converts microwaves into electric signals, the drain electrode (D) of each N-type MOS tube is connected with the output end of the unique receiving antenna, the electric signals of the receiving antennas enter the drain electrode (D) of the N-type MOS tube, the sources (S) of the whole N-type MOS tube array are connected to the input end of a filter, the output end of the filter is connected to the input end of an amplifier, and the output end of the amplifier is connected to the input end of a first analog-to-digital converter ADC; the grid electrode (G) is a control end of an N-type MOS tube, the grid electrode (G) of the MOS tube array is connected with the grid electrode (G) of a unique N-type MOS tube by expanding the output port of a second digital-to-analog converter DAC, the output port of the second digital-to-analog converter DAC is sequentially and correspondingly connected with the grid electrode (G) of the MOS tube array one by one according to a row-column sequence, and the output end of the digital signal processor DSP is connected with the input end of the second digital-to-analog converter DAC; the digital signal processor DSP controls the second digital-to-analog converter DAC, only opens the grid electrode (G) of one N-type MOS tube at the same time, and traverses the grid electrode (G) of each N-type MOS tube in the MOS tube array in sequence according to the row-column sequence; the device has the advantages that the use of the filter and the amplifier is reduced, the filter and the amplifier can be completed by sharing one set of filter and amplifier, the miniaturization of the detection equipment is facilitated, and the detection can be realized in a semi-closed space and a micro space.
The detection method of the detection system based on the energy storage plate comprises the steps that on the same unit area of the same energy storage plate, a digital signal processor DSP independently starts infrared ray or microwave imaging at the same time, imaging data are acquired at intervals and mutually verified, the digital signal processor DSP outputs detected high-level signals, the detected high-level signals are converted into detected analog signals through a first digital-to-analog converter DAC, the detected analog signals are amplified through a radio frequency transmitting module, microwaves are transmitted through a transmitting antenna array and reflected by the energy storage plate, a part of the reflected microwaves enter a coaxial line array, the digital signal processor DSP sequentially and simultaneously only conducts one MOS tube of the MOS tube array through a second digital-to-analog converter DAC according to a row-column sequence, each MOS tube of the MOS tube array is traversed, electric signals of the MOS tubes are filtered by a filter and amplified by an amplifier to form microwave detection analog signals, the microwave detection analog signals enter a first analog-to-digital converter ADC, and the microwave detection digital signals are input into the digital signal processor DSP to form images inside the energy storage plate through calculation; the digital signal processor DSP starts the infrared thermal imager, the infrared optical fiber array collects infrared rays of the energy storage plate, and the infrared optical fiber array transmits the infrared rays to the infrared thermal imager to form a heat distribution image outside the energy storage plate; it should be noted that, the infrared and microwave imaging devices are controlled by a Digital Signal Processor (DSP), which is connected to the infrared and microwave imaging devices, and uses a serial communication interface (such as UART, SPI, or I2C) or a parallel data bus; in the software program of the digital signal processor DSP, corresponding codes are written to control the starting sequence of the infrared ray and microwave imaging equipment, and the infrared ray and the microwave imaging equipment are started by sending proper instructions or configuring registers according to the requirement; for example, a command may be sent to the DSP first to start the infrared imaging device and wait for it to complete the imaging process, and then to start the microwave imaging device and wait for it to complete the imaging process; it should be noted that the start-up and imaging process of the infrared and microwave imaging devices requires a certain amount of time, and therefore, appropriate delays or waiting times need to be considered when programming the software program to ensure that each imaging device has sufficient time to complete imaging; in addition, the DSP can receive data from infrared and microwave imaging equipment and perform corresponding digital signal processing and image processing algorithms; finally, the processed results may be displayed on a suitable display device, such as a display screen or a computer monitor. The transmitting antenna array is a group of transmitting antennas which are orderly arranged, and can transmit microwave signals to a target position in a specific direction and power; the transmitting antenna array can realize beam forming by adjusting the phase and amplitude of the antenna, thereby realizing directional transmission of signals. The image inside the energy storage plate is obtained by calculation through a Digital Signal Processor (DSP), firstly, the DSP inputs a microwave detection Analog signal to a first Analog-to-digital converter (ADC) (Analog-to-Digital Converter) to convert the microwave detection Analog signal into a microwave detection digital signal, and then, the DSP processes and calculates the digital signals to form the image inside the energy storage plate; such processing and computation may include algorithms and techniques such as filtering, amplification, denoising, image reconstruction, etc.; finally, the DSP outputs the calculated image and can further process or display the calculated image according to the requirement, so that the image in the energy storage plate can be formed and displayed through the calculation of the DSP. The digital signal processor DSP starts the infrared thermal imager, the infrared optical fiber array collects infrared rays of the energy storage plate, and the infrared optical fiber array transmits the infrared rays to the infrared thermal imager to form a heat distribution image outside the energy storage plate; the DSP is used for starting the infrared thermal imager and processing infrared signals acquired from the infrared optical fiber array; the infrared thermal imager is a device for measuring the surface temperature of the energy storage plate; the infrared signal is received and converted into a heat distribution image, so that the heat distribution condition outside the energy storage plate is displayed; the DSP plays a key role in the system and is responsible for starting the infrared thermal imager and processing infrared signals acquired from the infrared optical fiber array to finally form a heat distribution image outside the energy storage plate.
Compared with the prior art, the invention has the beneficial effects that:
(1) Mutual verification is carried out on the inside and the outside of the energy storage plate through infrared ray and microwave imaging, so that errors and deviations are reduced, and the imaging accuracy and precision are improved;
(2) The infrared imaging and the microwave imaging have different characteristics and adaptability in different frequency bands, and the detection capability of the energy storage plate is enhanced and the identification rate of the target is improved by collecting and verifying two imaging data simultaneously;
(3) The sensitivity to environmental interference is reduced by adopting imaging modes of different frequency bands, and the anti-interference capability is improved, so that complex imaging environments are better dealt with;
(4) Because a mode of interval acquisition is adopted, a large amount of imaging data is acquired in a short time, so that the instantaneity and the response speed are improved, and the method has better coping capability for a rapidly-changing target or scene;
(5) By mutually verifying imaging data, the reliability and stability of the system can be improved, and errors and deviations possibly existing in a single imaging mode are reduced, so that the performance and reliability of the whole imaging system are improved;
(6) Collecting infrared imaging on the surface of the energy storage plate, detecting the outer surface of the energy storage plate, reflecting the energy storage plate by emitting microwaves, collecting reflected microwave imaging, detecting the inside of the energy storage plate, performing mutual verification detection on the same side of the energy storage plate by infrared rays and microwaves, improving the detection accuracy, and improving the use flexibility and miniaturization of detection equipment;
(7) The transmitting antenna array and the coaxial line array are respectively arranged on two sides of the infrared optical fiber array and are symmetrical, the vertical projection surface of the infrared optical fiber array on the front face of the energy storage plate coincides with the microwave reflection surfaces of the transmitting antenna array and the coaxial line array on the front face of the energy storage plate, and synchronous detection improves detection efficiency.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a spatial distribution diagram of an infrared thermal and microwave detection portion of a detection method of an energy storage plate-based detection system;
FIG. 2 is an infrared thermal imaging flow chart of a detection method of an energy storage plate-based detection system;
fig. 3 is a microwave imaging flow chart of a detection method of an energy storage plate-based detection system.
In the drawings, the reference numerals and corresponding part names: 101-transmitting antenna array, 102-infrared optical fiber array, 103-coaxial line array and 104-energy storage plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. It will be apparent that the described embodiments are some, but not all, embodiments of the invention.
Thus, the following detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely representative of some 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, under the condition of no conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.
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.
The present invention will be described in further detail with reference to examples.
Embodiment 1, as shown in fig. 1, an energy storage plate-based detection system includes: the device comprises an optical fiber, a coaxial line, a digital signal processor DSP, a digital-to-analog converter DAC, an analog-to-digital converter ADC, a MOS tube, a radio frequency emission module and an antenna, wherein the optical fiber comprises an optical fiber array for transmitting infrared rays, the coaxial line comprises a coaxial line array, the antenna comprises an emission antenna array and a receiving antenna array, the output end of the digital signal processor DSP is connected with the input end of a first digital-to-analog converter DAC, the output end of the first digital-to-analog converter DAC is connected with the input end of the radio frequency emission module, and the output end of the radio frequency emission module is connected with the emission antenna array; each coaxial line is coupled with a receiving antenna, the coupling part is matched with metal rings to shield the overflow and interference of microwaves, the coaxial line arrays are in one-to-one correspondence according to the row-column sequence and are coupled to the receiving antenna arrays, the coupling part adopts the matched metal ring arrays, each antenna in the receiving antenna arrays is mutually independent, each antenna is sequentially and one-to-one correspondence connected with one MOS tube according to the row-column sequence to form an MOS tube array, the output end of a digital signal processor DSP is connected with the input end of a second digital-to-analog converter DAC, the output end of the second digital-to-analog converter DAC is expanded, the output end of the second digital-to-analog converter DAC is sequentially and one-to-one correspondence connected with the grid electrode (G) of the MOS tube array according to the row-column sequence, the output end of the MOS tube array is connected with the input end of a filter, the output end of the filter is connected with the input end of a first analog-to-digital converter ADC, and the output end of the first analog-to-digital converter ADC is connected with the input end of the digital signal processor DSP; the infrared optical fiber array is perpendicular to the front surface of the energy storage plate and is connected to the infrared thermal imager which is connected with the digital signal processor DSP; the transmitting antenna array and the coaxial line array are respectively arranged on two sides of the infrared optical fiber array and are symmetrical, and the vertical projection surface of the infrared optical fiber array on the front surface of the energy storage plate coincides with the microwave reflection surfaces of the transmitting antenna array and the coaxial line array on the front surface of the energy storage plate for transmitting and receiving; it should be noted that, the output end of the digital signal processor DSP (Digital Signal Processor) is connected to the input end of the first digital-to-Analog converter DAC (Analog-to-digital converter), and converts the digital signal into an Analog signal for output, the digital-to-Analog converter is an electronic device for converting the digital signal into an Analog signal for processing or outputting in an Analog circuit, and in the digital signal processor DSP, the output digital signal is converted into an Analog signal by the digital-to-Analog converter DAC, and then amplified and filtered by the Analog circuit, and finally output to the output port of the external device. The output end of the first digital-to-analog converter DAC is connected with the input end of the radio frequency transmitting module, and the output end of the radio frequency transmitting module is connected with the transmitting antenna array; the connection mode is that digital signals are converted into analog signals through an analog-to-digital converter DAC, then the analog signals are converted into radio frequency signals through a radio frequency transmitting module, and finally the wireless signals are transmitted through a transmitting antenna array; the specific connection mode is that the output end of the DAC is connected with the input end of the radio frequency transmitting module, the output end of the radio frequency transmitting module can be connected with the transmitting antenna array through a cable, a connector and the like, and therefore signal transmission is achieved. Each coaxial line is coupled with a receiving antenna, the coupling part is matched with a metal ring to shield the overflow and interference of microwaves, the coaxial line arrays are in one-to-one correspondence according to the row-column sequence and are coupled to the receiving antenna arrays, the coupling part adopts the matched metal ring arrays, each antenna is connected with one MOS tube in one-to-one correspondence according to the row-column sequence to form an MOS tube array, the output signal of each MOS tube array can be processed and analyzed through a signal processing circuit, the coaxial line arrays are used for transmitting microwave signals, the microwave signals are transmitted from a transmitting end to a receiving end, the transmitting end is the end of the microwave which enters one end of the coaxial line array after being reflected by an energy storage plate, and the receiving antenna arrays are used for receiving the transmitted microwave signals and transmitting the signals to the corresponding MOS tubes; the signals received by each MOS may be amplified, filtered, etc., and then further processed and analyzed by a signal processing circuit. The output end of the digital signal processor DSP is connected with the input end of the second digital-to-analog converter DAC, and the output port of the second digital-to-analog converter DAC is expanded, depending on the type of interface of the Digital Signal Processor (DSP) and the digital-to-analog converter DAC used and the system requirement, the following expansion method is adopted: the parallel interface expands the output port of the second digital-to-analog converter DAC: if a parallel interface is used between the DSP and DAC, the output ports of the DAC can be extended by adding more data lines, which can increase the number of output channels of the DAC to some extent, but it is necessary to ensure that the interface types and data bandwidths of the DSP and DAC support the extension. The serial interface extends the output port of the second digital to analog converter DAC: if a serial interface (such as SPI or I2S) is used between the DSP and the DAC, the output port can be expanded by connecting a plurality of DACs in series; each DAC may be connected to an output pin of the DSP and data is transferred via a serial interface, which may enable a linear increase in the number of DAC output channels, but requires adaptations in terms of hardware design and software driving. The DSPs are connected with the DAC in parallel, and the output port of the DAC of the second digital-to-analog converter is expanded: if the system requires a higher number of output channels, it is conceivable to use several DSPs and DACs connected in parallel, for example 5 or 10, each DSP controlling one DAC and exchanging data via a bus or network; this approach allows for expansion of high channel numbers, but requires adaptation in terms of system design and communication protocols; whichever extension method is selected, compatibility and suitability in terms of hardware and software need to be considered; in addition, attention is paid to the problems of timing requirements of the system, design of power and ground lines, signal interference and the like so as to ensure the performance and stability of the expanded system. The output ports of the second digital-to-analog converter DAC are sequentially and correspondingly connected with the grid electrodes (G) of the MOS tube arrays one by one according to the row-column sequence, so that the on and off of each MOS tube can be controlled, and the control of the MOS tube arrays is realized; the drain electrode (D) of the N-type MOS tube is connected with an antenna in the receiving antenna array, the source electrode (S) of the N-type MOS tube is connected with the filter, and the output voltage of the DAC is controlled to control the grid voltage of the MOS tube, so that the on and off of the MOS tube are controlled.
Further, the infrared optical fiber array is perpendicular to the front surface of the energy storage plate, the infrared optical fiber array is connected to the infrared thermal imager, the infrared thermal imager is connected with the digital signal processor DSP, and the digital signal processor DSP is connected with the infrared thermal imager control system; the infrared optical fiber array collects infrared radiation on the front surface of the energy storage plate and transmits the infrared radiation to the thermal infrared imager for image acquisition; the infrared thermal imaging instrument transmits the acquired image signals to the digital signal processor DSP for signal processing and analysis.
Further, the transmitting antenna array and the coaxial line array are respectively located at two sides of the infrared optical fiber array and are symmetrical, specifically, the infrared optical fiber array 102 collects infrared rays emitted by the energy storage plate 104, the transmitting antenna array 101 transmits microwaves to the energy storage plate 104, the microwaves are reflected inside the energy storage plate 104, the coaxial line array 103 collects microwaves reflected inside the energy storage plate 104, due to the fact that the reflection of the microwaves is adopted, the power of the microwaves transmitted by the transmitting antenna array 101 is determined and identified by the coaxial line array 103, the required power is very low, the transmitting antenna array 101 and the coaxial line array 103 adopt symmetrical structures and are symmetrical relative to the infrared optical fiber array 102, the area of the infrared optical fiber array 102 for collecting the energy storage plate 104 and the area of the coaxial line array 103 for collecting the energy storage plate 104 are adjusted to be overlapped, firstly, the synchronous capacity of infrared detection and microwave detection can be quickly compared in the same area, and the vertical projection surface of the infrared optical fiber array on the front of the energy storage plate coincides with the microwave reflection surface of the transmitting and receiving the infrared optical fiber array on the front of the energy storage plate, and the coaxial line array on the front of the energy storage plate is realized, and the spatial separation of the infrared optical fiber array and the transmitting antenna array and the infrared optical fiber array is avoided; meanwhile, the infrared optical fiber array coincides with the reflecting surfaces for transmitting and receiving microwaves, so that the loss and interference of signal transmission can be reduced, and the performance and efficiency of the system are improved; advantages of this arrangement include: spatial separation: the infrared optical fiber array, the transmitting antenna array and the coaxial line array are separated on two sides, so that mutual interference and interference are avoided; the signal transmission efficiency is high: the infrared optical fiber array is overlapped with the reflecting surfaces for transmitting and receiving microwaves, so that the loss and interference of signal transmission can be reduced, and the performance and efficiency of the system are improved; the system has high reliability: through optimization of layout, the failure rate of the system can be reduced, and the reliability and stability of the system are improved.
Further, the radio frequency transmitting module includes: the radio frequency power amplifier comprises a radio frequency transmitting chip, a radio frequency power amplifier, a radio frequency filter, a radio frequency output port, a radio frequency control interface, a power management circuit and an auxiliary connection interface, wherein the radio frequency transmitting chip is provided with: the radio frequency transmitting chip is a core part of the module and is responsible for generating and amplifying radio frequency signals, and is an integrated circuit chip which is used for converting electronic signals into radio frequency signals and transmitting the radio frequency signals, and consists of a transmitter and a radio frequency front end module; the main characteristics of the radio frequency transmitting chip include: high integration level: the radio frequency transmitting chip integrates various radio frequency function modules, so that the size and complexity of the circuit board are reduced; high efficiency: the radio frequency transmitting chip can realize high-power and high-efficiency output, and the distance and quality of wireless signal transmission are improved; low power consumption: the radio frequency transmitting chip adopts a low-power consumption design, so that the service life of a battery is effectively prolonged; high stability: the radio frequency transmitting chip has stability in the aspects of frequency, power output and the like, and can adapt to different working environments and requirements; easy to integrate and use: the radio frequency transmitting chip is provided with a standardized interface and a development tool, so that the radio frequency transmitting chip is easy to integrate into various applications, and is convenient for developers to debug and use; a radio frequency power amplifier: the radio frequency power amplifier is used for amplifying the power of a radio frequency signal to achieve proper transmitting power, and the radio frequency amplifier (RF amplifier) is an electronic device and is used for amplifying the amplitude of the radio frequency signal so as to enhance the power of the signal; radio frequency amplifiers typically use transistors as amplifying elements, of which bipolar transistors (BJTs) and Field Effect Transistors (FETs) are most commonly used, and these amplifiers can be classified as low frequency amplifiers, intermediate frequency amplifiers and high frequency amplifiers in order to accommodate the radio frequency signal amplification requirements of different frequency ranges; the performance of a radio frequency amplifier is generally measured by indexes such as gain, bandwidth, linearity and noise coefficient, wherein the gain represents the ratio of a signal output by the amplifier to an input signal, the bandwidth represents the frequency range which the amplifier can amplify, the linearity represents whether the amplifier has linear response to the input signals with different amplitudes, and the noise coefficient represents the influence of noise introduced by the amplifier on the signal quality; a radio frequency filter: the radio frequency filter is used for filtering the transmitting signal, removing unnecessary harmonic waves and interference signals and ensuring the purity of the transmitting signal; a radio frequency output port: the radio frequency output port is used for guiding out the amplified radio frequency signals, and is usually an antenna connection port; radio frequency control interface: the radio frequency control interface provides an interface for the module to communicate with external equipment, and can be used for adjusting radio frequency emission parameters, controlling a switch for emitting signals and the like; power management circuit: the power management circuit is responsible for providing proper power supply for the radio frequency transmitting module and ensuring the normal operation of the module; auxiliary connection interface: the auxiliary connection interface is used for connecting with other external circuits or devices, such as control signal input, data input, etc.
Further, the coaxial line array and the receiving antenna array are arranged in the electromagnetic shielding cylinder in a mode of one-to-one correspondence of row and column positions, the electromagnetic shielding cylinder comprises an inner layer and an outer layer, the inner layer is a plastic layer, and the outer layer is a metal layer; it should be noted that, the metal with electromagnetic shielding capability is usually a metal energy storage plate with good electrical conductivity, and common metals with electromagnetic shielding capability include copper, aluminum, iron, steel, and the like.
In the detection method of the detection system based on the energy storage plate, as shown in fig. 2 to 3, on the same unit area of the same energy storage plate, a digital signal processor DSP independently starts infrared ray or microwave imaging at the same time, acquires and mutually verifies imaging data at intervals, the digital signal processor DSP outputs a detected high-level signal, the detected high-level signal is converted into a detected analog signal through a first digital-to-analog converter, the detected analog signal is amplified through a radio frequency transmitting module, microwaves are transmitted through a transmitting antenna array, the microwaves are reflected at the energy storage plate, a part of the microwaves reflected by a DAC enter a coaxial line array, the digital signal processor DSP sequentially and simultaneously only conducts one MOS tube of the MOS tube array through a second digital-to-analog converter DAC according to a row-column sequence, and traverses each MOS tube of the MOS tube array, an electric signal of the MOS tube is filtered by a filter and amplified by an amplifier to form a microwave detection analog signal, the microwave detection analog signal enters a first analog-to-digital converter ADC, and the microwave detection digital signal is input into the digital signal processor DSP to form an image inside the energy storage plate through calculation; the digital signal processor DSP starts the infrared thermal imager, the infrared optical fiber array collects infrared rays of the energy storage plate, and the infrared optical fiber array transmits the infrared rays to the infrared thermal imager to form a heat distribution image outside the energy storage plate; it should be noted that, the infrared and microwave imaging devices are controlled by a Digital Signal Processor (DSP), which is connected to the infrared and microwave imaging devices, and uses a serial communication interface (such as UART, SPI, or I2C) or a parallel data bus; in the software program of the digital signal processor DSP, corresponding codes are written to control the starting sequence of the infrared ray and microwave imaging equipment, and the infrared ray and the microwave imaging equipment are started by sending proper instructions or configuring registers according to the requirement; for example, a command may be sent to the DSP first to start the infrared imaging device and wait for it to complete the imaging process, and then to start the microwave imaging device and wait for it to complete the imaging process; it should be noted that the start-up and imaging process of the infrared and microwave imaging devices requires a certain amount of time, and therefore, appropriate delays or waiting times need to be considered when programming the software program to ensure that each imaging device has sufficient time to complete imaging; in addition, the DSP can receive data from infrared and microwave imaging equipment and perform corresponding digital signal processing and image processing algorithms; finally, the processed results may be displayed on a suitable display device, such as a display screen or a computer monitor. The transmitting antenna array is a group of transmitting antennas which are orderly arranged, and can transmit microwave signals to a target position in a specific direction and power; the transmitting antenna array can realize beam forming by adjusting the phase and amplitude of the antenna, thereby realizing directional transmission of signals. The image inside the energy storage plate is obtained by calculation through a Digital Signal Processor (DSP), firstly, the DSP inputs a microwave detection Analog signal to a first Analog-to-digital converter (ADC) (Analog-to-Digital Converter) to convert the microwave detection Analog signal into a microwave detection digital signal, and then, the DSP processes and calculates the digital signals to form the image inside the energy storage plate; such processing and computation may include algorithms and techniques such as filtering, amplification, denoising, image reconstruction, etc.; finally, the DSP outputs the calculated image and can further process or display the calculated image according to the requirement, so that the image in the energy storage plate can be formed and displayed through the calculation of the DSP. The digital signal processor DSP starts the infrared thermal imager, the infrared optical fiber array collects infrared rays of the energy storage plate, and the infrared optical fiber array transmits the infrared rays to the infrared thermal imager to form a heat distribution image outside the energy storage plate; the DSP is used for starting the infrared thermal imager and processing infrared signals acquired from the infrared optical fiber array; the infrared thermal imager is a device for measuring the surface temperature of the energy storage plate; the infrared signal is received and converted into a heat distribution image, so that the heat distribution condition outside the energy storage plate is displayed; the DSP plays a key role in the system and is responsible for starting the infrared thermal imager and processing infrared signals acquired from the infrared optical fiber array to finally form a heat distribution image outside the energy storage plate.
Further, infrared thermal imaging is the process of generating a heat map using infrared radiation emitted by an energy storage plate; the specific process is as follows:
step A1, receiving infrared radiation: the infrared thermal imager collects infrared radiation emitted by the energy storage plate by using an optical fiber array for transmitting infrared rays; infrared radiation is electromagnetic radiation generated by the heat of the energy storage plate, having a longer wavelength, typically between 0.8 microns and 1 millimeter;
step A2, converting infrared radiation into an electric signal: the infrared detector converts the received infrared radiation into corresponding electric signals; different infrared detectors have different working principles, and common examples include thermocouples, thermopiles, photodiodes, etc., and photosensitive elements convert: infrared receivers typically include a photosensitive element, such as a photodiode (photo diode) or a photo resistor (photo resistor), which converts received infrared radiation into a current or resistance change; signal amplification: the received weak current or resistance change typically needs to be amplified in order to be able to be processed by subsequent circuits. This may be achieved by using an amplifier circuit; and (3) signal processing: the amplified electrical signal may require further processing, such as filtering, amplification, conditioning, etc., which may be performed as desired for a particular application; digitization: in some applications, the electrical signal may need to be converted to a digital signal for further digital signal processing or communication with other digital systems, which may be accomplished through the use of an analog-to-digital converter (ADC); an analog-to-digital converter is an electronic device for converting the analog-to-digital (analog-to-digital) of an analog signal to the analog-to-digital (digital-to-analog) of a digital signal that converts a continuous analog signal to a discrete digital signal for processing and analysis by a digital system; analog-to-digital converters are typically composed of two main parts: sampling and quantization, wherein the sampling is to measure continuous analog signals in a certain time interval and convert the continuous analog signals into discrete samples; quantization is the mapping of each sample value to the nearest discrete value so that it can be represented by a finite number of bits; analog-to-digital converters are of various types, including successive approximation type (Successive Approximation Converter), flash memory type (Flash Converter), integral type (Integrating Converter), etc.; converting the analog signal into a digital signal, and further analyzing and processing the digital signal by a digital signal processing algorithm; and (3) signal output: finally, the converted electrical signal may be output to other electronic devices or systems for further analysis, control or display. This may be accomplished by way of connection to other circuits or devices; in general, the process of converting infrared radiation into an electrical signal includes steps of receiving, converting, amplifying, processing, digitizing and outputting, and the specific implementation and circuit design will vary according to the needs of the application;
Step A3, processing the electric signal: the infrared thermal imaging instrument amplifies, filters and digitizes the received electric signal to improve the quality and definition of the image;
step A4, generating a heat map: the processed electric signals are converted into a heat map, the temperature distribution of the surface of the energy storage plate is displayed, the heat map usually uses pseudo colors to represent different temperature areas, and the common colors are mapped with rainbow, iron oxide red, gray scale and the like;
step A5, displaying and analyzing: the generated heat map is displayed on a screen of the infrared thermal imager, and a user can analyze information such as temperature distribution, heat flow and the like of the energy storage plate by observing the heat map; in general, the process of infrared thermal imaging includes the steps of receiving infrared radiation, converting the infrared radiation into an electrical signal, processing the electrical signal, generating a heat map, displaying and analyzing, and the like, through which temperature distribution information on the surface of the energy storage plate can be obtained; a method for evaluating the temperature distribution and heat transfer of the energy storage plate by measuring the infrared radiation of the surface of the energy storage plate; problems of thermal anomalies, thermal leaks, thermal conduction, and the like in the energy storage plate are detected and their location, extent, and nature are determined by analyzing the infrared images.
Further, the process of generating an image of the interior of the energy storage plate by microwave imaging using reflection of microwaves from the interior of the energy storage plate comprises the following steps:
Step B1, emitting microwaves: transmitting microwaves to the energy storage plate;
step B2, receiving microwaves: the reflection, scattering, transmission and other phenomena of the microwave can occur on the surface and inside of the energy storage plate; the microwaves are reflected on the surface and inside of the energy storage plate, the reflected microwaves are part of the microwaves, the reflected angles of the microwaves are determined by the structures of the microwaves on the surface and inside of the energy storage plate, such as flatness, fracture and the like, and part of the microwaves are reflected back to form echo signals, and the echo signals are received and converted into electric signals;
step B3, imaging processing: the received echo signals are transmitted to an imaging processing system after being amplified, filtered and the like, and the imaging processing system calculates the internal structure and shape of the energy storage plate through a mathematical algorithm according to the propagation time, amplitude, phase and other information of the microwave; the problems of cracks, defects, fatigue damage and the like in the interior of the energy storage plate are detected by detecting the change of the microwave signal in the interior of the energy storage plate, and the position, the size and the severity of the microwave signal are determined by analyzing the characteristics of the microwave signal. The microwave imaging and the infrared thermal imaging detection are combined, so that the advantages of the two detection means can be fully utilized, and the accuracy and the reliability of the detection are improved. For example, in detecting a crack in an energy storage plate, microwave imaging may provide presence and location information of the crack, while infrared thermal imaging detection may provide thermal anomaly information around the crack, thereby more fully assessing the nature and extent of the crack.
The above embodiments are only for illustrating the present invention and not for limiting the technical solutions described in the present invention, and although the present invention has been described in detail in the present specification with reference to the above embodiments, the present invention is not limited to the above specific embodiments, and thus any modifications or equivalent substitutions are made to the present invention; all technical solutions and modifications thereof that do not depart from the spirit and scope of the invention are intended to be included in the scope of the appended claims.
Claims (8)
1. An energy storage plate-based detection system, comprising: the device comprises an optical fiber, a coaxial line, a digital signal processor DSP, a digital-to-analog converter DAC, an analog-to-digital converter ADC, a MOS tube, a radio frequency transmitting module and an antenna, wherein the optical fiber comprises an optical fiber array for transmitting infrared rays, the coaxial line comprises a coaxial line array, and the antenna comprises a transmitting antenna array and a receiving antenna array, and is characterized in that the output end of the digital signal processor DSP is connected with the input end of a first digital-to-analog converter DAC, the output end of the first digital-to-analog converter DAC is connected with the input end of the radio frequency transmitting module, and the output end of the radio frequency transmitting module is connected with the transmitting antenna array; each coaxial line is coupled with a receiving antenna, the coupling part is matched with a metal ring to shield the overflow and interference of microwaves, the coaxial line arrays are in one-to-one correspondence according to the row-column sequence and are coupled to the receiving antenna arrays, the coupling part adopts the matched metal ring arrays, each antenna in the receiving antenna arrays is mutually independent, each antenna is sequentially and one-to-one correspondence connected with one MOS tube according to the row-column sequence to form an MOS tube array, the output end of a digital signal processor DSP is connected with the input end of a second digital-to-analog converter DAC, the output end of the second digital-to-analog converter DAC is expanded, the output end of the second digital-to-analog converter DAC is sequentially and one-to-one correspondence connected with the grid electrode of the MOS tube array according to the row-column sequence, the output electrode of the MOS tube array is connected with the input end of a filter, the output end of the filter is connected with the input end of an amplifier, and the output end of the first analog-to-digital converter ADC is connected with the input end of the digital signal processor DSP; the infrared optical fiber array is perpendicular to the front surface of the energy storage plate and is connected to the infrared thermal imager which is connected with the digital signal processor DSP; the transmitting antenna array and the coaxial line array are respectively arranged on two sides of the infrared optical fiber array and are symmetrical, and the vertical projection surface of the infrared optical fiber array on the front face of the energy storage plate coincides with the microwave reflection surfaces of the transmitting antenna array and the coaxial line array on the front face of the energy storage plate for transmitting and receiving.
2. The energy storage board based detection system of claim 1, wherein the parallel interface extends the output port of the second digital to analog converter DAC.
3. The energy storage board based detection system of claim 1, wherein the serial interface extends the output port of the second digital to analog converter DAC.
4. The energy storage board based detection system of claim 1, wherein alternatively, a plurality of DSPs are connected in parallel with the DACs, extending the output port of the second digital-to-analog converter DAC.
5. The energy storage plate based detection system of claim 1, wherein a drain of an N-type MOS tube is connected to an antenna in the receiving antenna array and a source of the N-type MOS tube is connected to the filter.
6. The detection method of the detection system based on the energy storage plate is based on any one of claims 1 to 5, and is characterized in that on the same unit area of the same energy storage plate, a digital signal processor DSP independently starts infrared rays or microwaves to image at the same time, imaging data are acquired at intervals and mutually verified, the digital signal processor DSP outputs detected high-level signals, the detected high-level signals are converted into detected analog signals through a first digital-to-analog converter DAC, the detected analog signals are amplified through a radio frequency transmitting module, microwaves are transmitted through a transmitting antenna array and reflected by the energy storage plate, a part of the microwaves enter a coaxial line array, the digital signal processor DSP sequentially and simultaneously only conducts one MOS tube of the MOS tube array through a second digital-to-analog converter DAC according to a row-column sequence, and traverses each MOS tube of the MOS tube array, electric signals of the MOS tubes are filtered by a filter and amplified by an amplifier to form microwave detection analog signals, the microwave detection analog signals enter a first analog-to-digital converter ADC and the microwave detection digital signals are input into the digital signals, and the microwave detection digital signals are calculated by the digital signal processor DSP to form images inside the energy storage plate; the digital signal processor DSP starts the infrared thermal imager, the infrared optical fiber array collects infrared rays of the energy storage plate, and the infrared optical fiber array transmits the infrared rays to the infrared thermal imager to form a heat distribution image outside the energy storage plate.
7. The method of claim 6, wherein the infrared thermal imaging is a process of generating a heat map using infrared radiation emitted from the energy storage plate, and the specific process is as follows:
step A1, receiving infrared radiation;
step A2, infrared radiation is converted into an electric signal;
step A3, processing the electric signals;
step A4, generating a heat map;
and step A5, displaying and analyzing.
8. The method for detecting an energy storage plate-based detection system according to claim 6, wherein the process of generating an image of the interior of the energy storage plate by using reflection of microwaves from the interior of the energy storage plate comprises the steps of:
step B1, emitting microwaves;
step B2, receiving microwaves;
and step B3, imaging processing.
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| 余稳: "基于微波单片集成电路的交通信息采集技术研究", 中国优秀博士学位论文全文数据库工程科技Ⅱ辑, no. 12, pages 034 - 50 * |
| 李智鹏: "基于激光位移传感器的自动化高度尺寸测量***研究", 中国优秀硕士学位论文全文数据库信息科技辑, no. 03, pages 135 - 373 * |
| 胡曼青 等: "三维超声波风速测量仪主控电路***设计与实现", 中国测试, no. 03, pages 97 - 102 * |
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