A geophysical instrument with measurement saturation warning function and its use method

Abstract

The invention belongs to the technical field of data processing, and proposes a geophysical instrument with a measurement saturation early warning function and a method for using the same, comprising an antenna, an analog receiver, a microcontroller unit, a transmitting device and a transmitting antenna connected in sequence; the invention amplifies and filters the received geophysical signal; digitally processes the amplified and filtered collected geophysical signal, and detects the measurement saturation information; converts the measured saturation information into a high-frequency electrical oscillation signal; converts the high-frequency electrical oscillation signal into an electromagnetic wave signal, and transmits the electromagnetic wave signal; realizes the purpose of detecting the abnormal state of measurement saturation of the geophysical instrument, and meets the requirements of high real-time performance and high accuracy through amplification, filtering, conversion and wireless transmission.

Description

Technical Field

[0001] The invention belongs to the technical field of data processing, and in particular relates to a geophysical instrument with a measurement saturation early warning function and a use method thereof. Background Art

[0002] When geophysical instruments are left unattended in the field for a long time to collect data, measurement saturation often occurs during the long-term, high-intensity data collection process in the field. When measurement saturation occurs, the collected data will not change accordingly with changes in the external environment, resulting in the data being completely unusable and causing a waste of resources.

[0003] The inventors found that there is no mature technology to detect the abnormal state of instrument measurement saturation, and it is not possible to meet the requirements of high real-time and high accuracy. In addition, when an abnormal state is detected, it is necessary to remind the relevant personnel of this abnormality because there is no one on duty. Based on the current use of unmodulated electrical signals for information transmission in remote communication, it has the disadvantages of low stability, high error rate and weak anti-interference. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a geophysical instrument with a measurement saturation warning function and a method of using the same, which can send measurement saturation warning information over a long distance. When the geophysical instrument is unattended and the instrument becomes saturated due to long-term, high-intensity observation and cannot obtain effective observation data, the measurement saturation warning information can be sent in real time to a remote monitoring software platform to remind relevant personnel to reconfigure instrument parameters and store data.

[0005] In order to achieve the above-mentioned purpose, in a first aspect, the present invention provides a geophysical instrument with a measurement saturation warning function, which adopts the following technical solution:

[0006] A geophysical instrument with a measurement saturation early warning function, comprising an antenna, an analog receiver, a microcontroller unit, a transmitting device and a transmitting antenna connected in sequence;

[0007] The antenna is used to receive geophysical signals;

[0008] The analog receiver is used to amplify and filter the geophysical signal received by the antenna;

[0009] The micro control unit is used to digitally process the geophysical signals collected after amplification and filtering, and to detect measurement saturation information;

[0010] The transmitting device is used to convert the saturation information measured in the micro control unit into a high-frequency electrical oscillation signal;

[0011] The transmitting antenna is used to convert the high-frequency electrical oscillation signal in the sending device into an electromagnetic wave signal and send the electromagnetic wave signal.

[0012] Furthermore, it also includes a receiving antenna, a receiving device, a host computer and a remote control platform connected in sequence;

[0013] The receiving antenna is used to receive the electromagnetic wave signal from the transmitting antenna and convert the electromagnetic wave signal into a high-frequency electrical oscillation signal;

[0014] The receiving device is used to convert the high-frequency electrical oscillation signal in the receiving antenna into saturation information;

[0015] The host computer is used to send the saturation information in the receiving device to the remote control platform;

[0016] The remote control platform is used to receive the saturation information of the host computer and reset the parameters of the geophysical instrument.

[0017] Furthermore, the geophysical signal acquired after amplification and filtering is subjected to a fast Fourier transform to obtain the amplitude value of each frequency point; the frequency points are extracted, and the amplitudes of these frequency points are compared with the set saturation threshold value. If the amplitude of a certain frequency point is greater than the preset threshold value, the micro control unit sends a saturation warning signal to the host computer through the sending device and the transmitting antenna.

[0018] Furthermore, if there is no frequency point greater than the set saturation threshold, the micro control unit periodically sends information indicating that the geophysical instrument is operating normally to the host computer.

[0019] Furthermore, the receiving device includes a high-frequency amplifier, a mixer, an intermediate frequency amplifier, a detector and a transducer connected in sequence; the mixer is also connected to a local oscillator;

[0020] The detector is used to convert the intermediate frequency amplitude modulated wave into a modulated signal reflecting the transmitted information;

[0021] The transducer is used to convert the electrical signal into saturation information;

[0022] The local oscillator and mixer are used to convert the amplified high-frequency electrical oscillation signal into an intermediate frequency signal;

[0023] Furthermore, the receiving antenna receives an electromagnetic signal and converts the electromagnetic signal into a high-frequency electrical oscillation signal. After being amplified by the high-frequency amplifier, the amplified high-frequency electrical oscillation signal is converted into an intermediate frequency signal by the local oscillator and the mixer; after being amplified by the intermediate frequency amplifier, the detector demodulates the signal and converts it into a modulated electrical signal, and finally the transducer converts the modulated electrical signal into a saturation warning signal.

[0024] Furthermore, the transmitting device comprises a transducer, an amplifier and an amplitude modulator connected in sequence, and the amplitude modulator is further connected to a local oscillator via a frequency multiplier;

[0025] The transducer is used to convert saturation information into an electrical signal;

[0026] The amplifier is used to amplify the electrical signal;

[0027] The local oscillator is used to provide a high-frequency oscillation signal;

[0028] The frequency multiplier is used to multiply the frequency of the high-frequency oscillation signal generated by the local oscillator and provide carrier power to the amplitude modulator;

[0029] The amplitude modulator is used to realize the modulation function and convert the input carrier signal and modulation signal into an amplitude modulated wave signal.

[0030] Furthermore, after the saturation information is converted into an electrical signal by the transducer, it is amplified by the amplifier; then the carrier signal and the modulation signal generated by the combination of the local oscillator and the frequency multiplier are converted by the amplitude modulator to obtain an amplitude modulated wave signal, which is finally transmitted to the transmitting antenna.

[0031] Furthermore, the micro control unit is also connected to a storage hard disk for storing data.

[0032] In order to achieve the above-mentioned purpose, in a second aspect, the present invention also provides a method for using a geophysical instrument with a measurement saturation warning function, which adopts the following technical solution:

[0033] A method for using a geophysical instrument with a measurement saturation warning function, using the geophysical instrument with a measurement saturation warning function as described in the first aspect, comprising:

[0034] Receiving geophysical signals;

[0035] Amplify and filter the received geophysical signals;

[0036] Digitally process the geophysical signals acquired after amplification and filtering, and detect measurement saturation information;

[0037] Convert the measured saturation information into a high-frequency electrical oscillation signal;

[0038] Convert high-frequency electrical oscillation signals into electromagnetic wave signals and send them.

[0039] Compared with the prior art, the present invention has the following beneficial effects:

[0040] 1. The present invention amplifies and filters the received geophysical signals; performs digital processing on the amplified and filtered collected geophysical signals, and detects the measurement saturation information; converts the measured saturation information into a high-frequency electrical oscillation signal; converts the high-frequency electrical oscillation signal into an electromagnetic wave signal, and transmits the electromagnetic wave signal; realizes the purpose of detecting the abnormal state of measurement saturation of geophysical instruments, and meets the requirements of high real-time performance and high accuracy through amplification, filtering, conversion and wireless transmission;

[0041] 2. When the signal is sent in the present invention, the saturation information is converted into an electrical signal by a transducer and then amplified by an amplifier; then the carrier signal generated by the combination of the local oscillator and the frequency multiplier is converted into an amplitude modulator through a modulation signal to obtain an amplitude modulated wave signal, which is finally transmitted to the transmitting antenna; when receiving, the receiving antenna receives the electromagnetic signal and converts the electromagnetic signal into a high-frequency electrical oscillation signal, which is amplified by a high-frequency amplifier and then converted into an intermediate frequency signal by a local oscillator and a mixer; after amplification by the intermediate frequency amplifier, it is demodulated by a detector and converted into a modulated electrical signal, which is finally converted into a saturation warning signal by a transducer; the present invention uses a wireless communication method that combines modulation and demodulation to ensure that the receiving device can select useful signals from electromagnetic signals of many frequencies, thereby solving the problems of low stability, high error rate and weak anti-interference. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0043] Figure 1 This is a general structural diagram of a geophysical instrument according to Embodiment 1 of the present invention;

[0044] Figure 2 This is a measurement saturation detection flow chart of Example 1 of the present invention;

[0045] Figure 3 This is a structural diagram of a sending device according to Embodiment 1 of the present invention;

[0046] Figure 4 This is a structural diagram of a receiving device according to Embodiment 1 of the present invention. DETAILED DESCRIPTION

[0047] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0048] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0049] Embodiment 1:

[0050] like Figure 1 As shown, this embodiment provides a geophysical instrument with a saturation measurement warning function, including an antenna, an analog receiver, a microcontroller unit (MCU), a storage hard disk, a sending device, a transmitting antenna, a receiving antenna, a receiving device, a host computer, and a remote control platform. The antenna is used to receive geophysical signals; the analog receiver is used to amplify and filter the collected signals; the MCU is used to digitize the collected digital signals and perform functions such as saturation detection; the sending device is used to convert the saturation warning information into high-frequency electrical oscillations of sufficient intensity; the transmitting antenna converts the high-frequency electrical oscillations into electromagnetic waves and transmits them to the receiving antenna; the receiving antenna reconverts the electromagnetic waves with useful information into high-frequency electrical oscillation signals; the receiving device is used to convert the high-frequency electrical oscillation signals into the transmitted saturation warning information; the host computer is used to process the saturation warning information; and the warning information is sent to the remote control platform to remind relevant personnel to reset the parameters of the instrument and store data. The maximum frequency that can be observed by the geophysical instrument is 100kHz, and the bandwidth of each frequency band is 1kHz, that is, the bandwidth of the corresponding frequency point is 1khHz.

[0051] The measurement saturation detection of geophysical instruments is performed in the MCU. The flow chart is as follows: Figure 2 As shown. After the acquisition starts, the digital signal is transformed by Fast Fourier Transform (FFT) to obtain the amplitude value of each frequency point, and the corresponding FFT transformation is performed in the MCU. In order to reduce the hardware resource occupation, the frequency points are extracted in this embodiment. Then these frequency point amplitudes are compared with a pre-set detection saturation threshold. If the amplitude of a certain frequency point is greater than the pre-set threshold, the MCU sends a saturation warning signal to the host computer through the sending device and the transmitting antenna. After the host computer receives the warning signal, it reminds the relevant personnel to reset the parameters of the instrument and store data through the remote control platform. If there is no frequency point larger than the set saturation threshold, the MCU will periodically send information to the host computer that the geophysical instrument is operating normally.

[0052] Since wireless communication is very susceptible to interference during field work, such as radio signal interference, electromagnetic interference inherent in the atmosphere and the universe, etc., the receiving device cannot select the real useful signal. Therefore, this embodiment also designs a wireless communication method that combines modulation and demodulation to ensure that the receiving device can select the useful signal from electromagnetic signals of many frequencies.

[0053] like Figure 3 As shown, the transmitting device includes a transducer, an amplifier, a local oscillator, a frequency multiplier and an amplitude modulator. The transducer is used to convert the saturation warning signal into an electrical signal through the transducer; the amplifier amplifies the electrical signal; the local oscillator is used to provide a high-frequency oscillation signal; the frequency multiplier is used to multiply the frequency of the high-frequency oscillation signal generated by the local oscillator and provide sufficient carrier power; the amplitude modulator is used to realize the modulation function and convert the input carrier signal and the modulation signal into an amplitude modulated wave signal.

[0054] Specifically, first, the saturation warning signal is converted into an electrical signal by the transducer and then amplified by the amplifier; then the carrier signal and the modulation signal generated by the combination of the local oscillator and the frequency multiplier are converted by the amplitude modulator to obtain an amplitude modulated wave signal, which is finally transmitted to the transmitting antenna.

[0055] like Figure 4 As shown, the receiving device includes a high-frequency amplifier, a mixer, a local oscillator, an intermediate frequency amplifier, a detector and a transducer; wherein the detector realizes a demodulation function and transforms the intermediate frequency amplitude modulated wave into a modulated signal reflecting the transmitted information; the transducer is used to convert the electrical signal into a saturation warning signal; the local oscillator and the mixer are used to convert the amplified high-frequency electrical oscillation in frequency and transform it into an intermediate frequency signal.

[0056] Specifically, the antenna receives the electromagnetic signal and converts it into a high-frequency electrical oscillation, which is amplified by the high-frequency amplifier and then converted into an intermediate frequency signal by the local oscillator and the mixer; after being amplified by the intermediate frequency amplifier, it is demodulated by the detector and converted into a modulated electrical signal with a useful signal, which is finally converted into a saturation warning signal by the transducer; after the host computer detects the warning signal, it sends an alarm to the remote control platform in real time.

[0057] Embodiment 2:

[0058] A method for using a geophysical instrument with a measurement saturation warning function, using the geophysical instrument with a measurement saturation warning function as described in Example 1, comprising:

[0059] Receiving geophysical signals;

[0060] Amplify and filter the received geophysical signals;

[0061] Digitally process the geophysical signals acquired after amplification and filtering, and detect measurement saturation information;

[0062] Convert the measured saturation information into a high-frequency electrical oscillation signal;

[0063] Convert high-frequency electrical oscillation signals into electromagnetic wave signals and send them.

[0064] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A geophysical instrument with a measurement saturation warning function, characterized in that: It includes an antenna, an analog receiver, a micro control unit, a transmitting device, a host computer and a transmitting antenna which are connected in sequence; The antenna is used to receive geophysical signals; The analog receiver is used to amplify and filter the geophysical signal received by the antenna; The micro control unit is used to digitally process the geophysical signals collected after amplification and filtering, and to detect measurement saturation information; The transmitting device is used to convert the saturation information measured in the micro control unit into a high-frequency electrical oscillation signal; The transmitting antenna is used to convert the high-frequency electrical oscillation signal in the transmitting device into an electromagnetic wave signal and transmit the electromagnetic wave signal; The geophysical signal collected after amplification and filtering is subjected to fast Fourier transform to obtain the amplitude value of each frequency point; the frequency points are extracted, and the amplitudes of these frequency points are compared with the set saturation threshold value. If the amplitude of a certain frequency point is greater than the preset threshold value, the micro control unit sends a saturation warning signal to the host computer through the sending device and the transmitting antenna.

2. A geophysical instrument with a measurement saturation early warning function as claimed in claim 1, characterized in that: It also includes a receiving antenna, a receiving device and a remote control platform connected in sequence; The receiving antenna is used to receive the electromagnetic wave signal from the transmitting antenna and convert the electromagnetic wave signal into a high-frequency electrical oscillation signal; The receiving device is used to convert the high-frequency electrical oscillation signal in the receiving antenna into saturation information; The host computer is used to send the saturation information in the receiving device to the remote control platform; The remote control platform is used to receive the saturation information of the host computer and reset the parameters of the geophysical instrument.

3. A geophysical instrument with a measurement saturation early warning function as claimed in claim 1, characterized in that: If there is no frequency point greater than the set saturation threshold, the micro control unit periodically sends information indicating that the geophysical instrument is operating normally to the host computer.

4. A geophysical instrument with a measurement saturation early warning function as claimed in claim 2, characterized in that: The receiving device comprises a high-frequency amplifier, a mixer, an intermediate frequency amplifier, a detector and a transducer connected in sequence; the mixer is also connected to a local oscillator; The detector is used to convert the intermediate frequency amplitude modulated wave into a modulated signal reflecting the transmitted information; The transducer is used to convert the electrical signal into saturation information; The local oscillator and mixer are used to convert the amplified high-frequency electrical oscillation signal into an intermediate frequency signal.

5. A geophysical instrument with a measurement saturation early warning function as claimed in claim 4, characterized in that: The receiving antenna receives the electromagnetic signal and converts the electromagnetic signal into a high-frequency electrical oscillation signal. After being amplified by the high-frequency amplifier, the amplified high-frequency electrical oscillation signal is converted into an intermediate frequency signal by the local oscillator and the mixer. After being amplified by the intermediate frequency amplifier, the detector demodulates the signal and converts it into a modulated electrical signal. Finally, the transducer converts the modulated electrical signal into a saturation warning signal.

6. A geophysical instrument with a measurement saturation early warning function as claimed in claim 1, characterized in that: The transmitting device comprises a transducer, an amplifier and an amplitude modulator connected in sequence, and the amplitude modulator is further connected to a local oscillator via a frequency multiplier; The transducer is used to convert saturation information into an electrical signal; The amplifier is used to amplify the electrical signal; The local oscillator is used to provide a high-frequency oscillation signal; The frequency multiplier is used to multiply the frequency of the high-frequency oscillation signal generated by the local oscillator and provide carrier power to the amplitude modulator; The amplitude modulator is used to realize the modulation function and convert the input carrier signal and modulation signal into an amplitude modulated wave signal.

7. A geophysical instrument with a measurement saturation early warning function as claimed in claim 6, characterized in that: After the saturation information is converted into an electrical signal by the transducer, it is amplified by the amplifier; then the carrier signal and the modulation signal generated by the combination of the local oscillator and the frequency multiplier are converted by the amplitude modulator to obtain an amplitude modulated wave signal, which is finally transmitted to the transmitting antenna.

8. The geophysical instrument with measurement saturation early warning function as claimed in claim 1, characterized in that: The micro control unit is also connected to a storage hard disk for storing data.

9. A method for using a geophysical instrument with a measurement saturation warning function, characterized in that: A geophysical instrument with a measurement saturation early warning function as claimed in any one of claims 1 to 8 is used, comprising: Receiving geophysical signals; Amplify and filter the received geophysical signals; Digitally process the geophysical signals acquired after amplification and filtering, and detect measurement saturation information; Convert the measured saturation information into a high-frequency electrical oscillation signal; Convert high-frequency electrical oscillation signals into electromagnetic wave signals and send them.

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