CN111245376A - Electrical cabinet remote monitoring system based on Internet of things - Google Patents
Electrical cabinet remote monitoring system based on Internet of things Download PDFInfo
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- CN111245376A CN111245376A CN202010132461.XA CN202010132461A CN111245376A CN 111245376 A CN111245376 A CN 111245376A CN 202010132461 A CN202010132461 A CN 202010132461A CN 111245376 A CN111245376 A CN 111245376A
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- 239000003990 capacitor Substances 0.000 claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 29
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000005856 abnormality Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/32—Modifications of amplifiers to reduce non-linear distortion
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
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Abstract
The invention discloses an Internet of things-based electrical cabinet remote monitoring system, which comprises a waveform detection module, a frequency modulation feedback module and an amplitude limiting emission module, wherein the waveform detection module uses a wave detector J1 with the model number AD 8313 to collect the waveform of a carrier signal output by a signal emitter when an electrical cabinet works, the frequency modulation feedback module uses a detection circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out a peak signal, then uses a resistor R6-a resistor R8 and a capacitor C3-a capacitor C7 to form a frequency modulation circuit to adjust the signal frequency, and uses a thyristor Q4 and an operational amplifier AR3 to feed back an emitter signal of a triode Q3 to the output end of the operational amplifier 63AR 84 to adjust the signal potential of the peak circuit, and finally the amplitude limiting emission module uses a diode D4 and a diode D5 to form an amplitude limiting circuit to limit the signal, and sends the signal, the calibration device can calibrate the waveform of the carrier signal output by the signal transmitter during the working of the electrical cabinet, and convert the waveform into an error reference signal of the electrical cabinet remote monitoring terminal.
Description
Technical Field
The invention relates to the technical field of signal transmission, in particular to an electric cabinet remote monitoring system based on the Internet of things.
Background
At present, regulator cubicle remote monitering system is carrier transmission at present many, because for remote transmission, often meet the interference of equal or high frequency signal in the atmospheric environment, for example power plant, signalling tower, carrier signal takes place the distortion often, leads to the data information of modulation can lose partial data to lead to regulator cubicle data signal inaccurate, reduced regulator cubicle remote monitering system's result of use.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the invention aims to provide an electrical cabinet remote monitoring system based on the internet of things, which can calibrate the waveform of a carrier signal output by a signal transmitter during the operation of an electrical cabinet and convert the waveform of the carrier signal into an error reference signal of an electrical cabinet remote monitoring terminal.
The technical scheme includes that the electric cabinet remote monitoring system based on the Internet of things comprises a waveform detection module, a frequency modulation feedback module and an amplitude limiting emission module, wherein the waveform detection module collects a carrier signal waveform output by a signal emitter when the electric cabinet works by using a wave detector J1 with the model number of AD 8313, the frequency modulation feedback module uses a detection circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out a peak signal, then uses a resistor R6, a resistor R8, a capacitor C3 and a capacitor C7 to form a frequency modulation circuit to adjust the signal frequency, uses a thyristor Q4 and an operational amplifier AR3 to feed back a triode Q3 emitter signal to an output end of the operational amplifier AR1 to adjust the signal potential of the peak circuit, and uses a triode Q1 and a triode Q1 to form a switching circuit to detect the potential difference between the peak circuit output signal and the triode Q3, and finally, the amplitude limiting and transmitting module forms an amplitude limiting circuit by using a diode D4 and a diode D5 to limit the amplitude of the signal, and the amplitude limiting circuit is transmitted into the electrical cabinet remote monitoring terminal through a signal transmitter E1.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the carrier signal detection circuit comprises an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3, a peak signal is screened out, peak signal detection is utilized, the peak condition occurring in the signal is conveniently detected when the carrier signal is abnormal, then a frequency modulation circuit is formed by a resistor R6-a resistor R8 and a capacitor C3-a capacitor C7 to adjust the signal frequency, a capacitor C3-a capacitor C5 are used for isolating low-frequency signals, meanwhile, a capacitor C6 is used for filtering direct current interference signals, in order to further ensure the accuracy of carrier signal waveform abnormality detection, the conducting voltage of a silicon controlled transistor Q4 is used for detecting the emitter potential of a triode Q3, the signals are fed back to the output end of the operational amplifier AR1 after being amplified in phase by the operational amplifier AR3, the peak value of the output signal of the operational amplifier AR2 can be adjusted, and the potential of the;
2. the potential difference of the output signal of the peak circuit and the emitter signal of the triode Q3 is detected by using the triode Q1 and the triode Q1 to form a switch circuit, the pulse width value of the output signal of the frequency modulation circuit is adjusted, the stability of the signal frequency is ensured, the amplitude limiting circuit is formed by using the diode D4 and the diode D5 to limit the amplitude of the signal, the signal is sent to the electrical cabinet remote monitoring terminal through the signal transmitter E1, and by adopting the mode, the error data signal transmitted by the carrier signal can be filtered conveniently in time, and the data signal can be received again in time.
Drawings
Fig. 1 is a frequency modulation feedback module diagram of an electrical cabinet remote monitoring system based on the internet of things.
Fig. 2 is a waveform detection module diagram of the electrical cabinet remote monitoring system based on the internet of things.
Fig. 3 is a block diagram of amplitude limiting emission of the electrical cabinet remote monitoring system based on the internet of things.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 3. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
In the first embodiment, the electrical cabinet remote monitoring system based on the internet of things comprises a waveform detection module, a frequency modulation feedback module and an amplitude limiting emission module, wherein the waveform detection module uses a wave detector J1 with the model number AD 8313 to collect the waveform of a carrier signal output by a signal emitter when the electrical cabinet works, the frequency modulation feedback module uses a detection circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out a peak signal, then uses a resistor R6-a resistor R8 and a capacitor C3-a capacitor C7 to form a frequency modulation circuit to adjust the signal frequency, and uses a thyristor Q4 and an operational amplifier AR3 to feed back an emitter signal of a triode Q3 to the output end of the operational amplifier 63AR 84 to adjust the output signal potential of the peak circuit, and uses a triode Q1 and a triode Q1 to form a switching circuit to detect the potential difference between the output signal, the pulse width value of the output signal of the frequency modulation circuit is adjusted, and finally, the amplitude limiting transmitting module forms an amplitude limiting circuit by using a diode D4 and a diode D5 to limit the amplitude of the signal and sends the signal to the electrical cabinet remote monitoring terminal through a signal transmitter E1;
the frequency modulation feedback module utilizes an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to form a detection circuit to screen out peak signals, utilizes the peak signals to detect the peak conditions appearing in the signals when the carrier signals are abnormal, then utilizes a resistor R6, a resistor R8 and a capacitor C3, a capacitor C7 to form a frequency modulation circuit to adjust the signal frequency, utilizes a capacitor C3, a capacitor C5 to isolate low-frequency signals, utilizes a capacitor C6 to filter direct current interference signals, in order to further ensure the accuracy of the waveform abnormality detection of the carrier signals, utilizes a thyristor Q4 and an operational amplifier AR3 to feed back emitter signals of the triode Q3 to the output end of the operational amplifier AR1 to adjust the output signal potential of the peak circuit, utilizes the conduction voltage of the thyristor Q4 to detect the emitter potential of the triode Q3, amplifies in-phase signals by the operational amplifier AR3 and feeds back the signals to the output end of the operational, the peak value of the output signal of the operational amplifier AR2 can be adjusted, the potential of the peak signal can be screened out by fine-tuning the detection circuit, meanwhile, the triode Q1 and the triode Q1 are used to form a switching circuit to detect the potential difference between the output signal of the peak circuit and the emitter signal of the triode Q3, the pulse width value of the output signal of the frequency modulation circuit is adjusted, the stability of the signal frequency is ensured, namely, whether the output signal of the waveform detection module is abnormal or not is judged by adopting the mode, the amplitude limiting emission module is triggered to work, and the signal received by the electrical cabinet remote monitoring terminal is adjusted;
the specific structure of the frequency modulation feedback module is that the inverting input terminal of the operational amplifier AR1 is connected with the anode of the diode D2 and one end of the resistor R4, the output terminal of the operational amplifier AR1 is connected with the cathode of the diode D1, the anode of the diode D1 and the collector of the transistor Q1, the output terminal of the operational amplifier AR1 and one end of the resistor R1 and the resistor R1, the cathode of the diode D1 is connected with the non-inverting input terminal of the operational amplifier AR1 and one end of the resistor R1 and the capacitor C1, the other end of the resistor R1 and the capacitor C1 are grounded, the inverting input terminal of the operational amplifier AR1 is connected with the other end of the resistor R1, the output terminal of the operational amplifier AR1 is connected with the gate of the thyristor Q1, the emitter of the transistor Q1, the base of the transistor Q1 and one end of the resistor R1 and one end of the capacitor C1, the base of the transistor Q1 is connected with the ground, the base of the transistor Q1 and the capacitor R1 and the resistor R, the collector of the triode Q2 is connected with the emitter of the triode Q1 and one end of the resistor R7, the capacitor C4 and the capacitor C6, the other end of the resistor R6 is connected with the other end of the resistor R7 and one end of the capacitor C5, the other end of the capacitor C3 is connected with the other end of the capacitor C4 and one end of the resistor R8, the other ends of the resistor R8 and the capacitor C5 are grounded, the other end of the capacitor C6 is connected with the collector of the triode Q3 and one end of the resistor R11, the other end of the resistor R11 is connected with a power supply +5V, the other end of the resistor R12 is connected with the drain of the thyristor Q4, the source of the thyristor Q4 is connected with the non-inverting input end of the amplifier AR3, and.
In the second embodiment, on the basis of the first embodiment, the amplitude limiting and transmitting module uses a limiting circuit formed by a diode D4 and a diode D5 to limit the amplitude of a signal, and the signal is transmitted into the electrical cabinet remote monitoring terminal through a signal transmitter E1, so that an error data signal transmitted by a carrier signal can be filtered in time, and a data signal can be received again in time, a cathode of a diode D4 is connected with an anode of a diode D5 and a collector of a triode Q3, an anode of a diode D4 is connected with a cathode of a diode D5, one end of a resistor R14 and a cathode of a stabilivolt D6, an anode of a stabilivolt D6 is grounded, and the other end of the resistor R14 is connected with the signal transmitter E1;
the waveform detection module selects a wave detector J1 with the model number AD 8313 to collect the waveform of a carrier signal output by a signal transmitter when the electrical cabinet works, the power supply end of the wave detector J1 is connected with +5V, the grounding end of the wave detector J1 is grounded, the output end of the wave detector J1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the negative electrode of a voltage regulator tube D1 and one end of a resistor R2, the positive electrode of the voltage regulator tube D1 is grounded, the other end of the resistor R2 is connected with one end of a resistor R3 and one end of a capacitor C1, and the other end of the resistor R3 is.
The invention particularly discloses an Internet of things-based electrical cabinet remote monitoring system which comprises a waveform detection module, a frequency modulation feedback module and an amplitude limiting emission module, wherein the waveform detection module collects the waveform of a carrier signal output by a signal emitter when an electrical cabinet works by using a wave detector J1 with the model number of AD 8313, the frequency modulation feedback module uses a detection circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out a peak signal, the peak signal detection is used for conveniently detecting the peak condition appearing in the signal when the carrier signal is abnormal, then a resistor R6-a resistor R8 and a capacitor C3-a capacitor C7 are used for forming a frequency modulation circuit to adjust the signal frequency, a capacitor C3-a capacitor C5 are used for isolating low-frequency signals, and a capacitor C6 is used for filtering direct-current interference signals, so as to further ensure the accuracy of the waveform abnormality detection of the, the method comprises the steps of feeding back an emitter signal of a triode Q3 to an output end of an operational amplifier AR1 by using a thyristor Q4 and the operational amplifier AR3, adjusting the potential of an output signal of a peak circuit, detecting the potential of an emitter of a triode Q3 by using the conduction voltage of the thyristor Q4, feeding back a signal to an output end of the operational amplifier AR1 after in-phase amplification by using the operational amplifier AR3, adjusting the peak value of the output signal of the operational amplifier AR2, further finely adjusting the potential of the peak signal screened by a detection circuit, simultaneously detecting the potential difference of the output signal of the peak circuit and the emitter signal of the triode Q3 by using a switching circuit consisting of the triode Q1 and the triode Q1, adjusting the pulse width value of the output signal of a frequency modulation circuit, ensuring the stability of the signal frequency, namely judging whether the output signal of a waveform detection module is abnormal by using the method, triggering an amplitude limiting emission module to work, the diode D5 forms an amplitude limiting circuit to limit the amplitude of the signal, and the signal is sent to the electrical cabinet remote monitoring terminal through the signal transmitter E1.
While the invention has been described in further detail with reference to specific embodiments thereof, it is not intended that the invention be limited to the specific embodiments thereof; for those skilled in the art to which the present invention pertains and related technologies, the extension, operation method and data replacement should fall within the protection scope of the present invention based on the technical solution of the present invention.
Claims (3)
1. An Internet-of-things-based electrical cabinet remote monitoring system comprises a waveform detection module, a frequency modulation feedback module and an amplitude limiting emission module, and is characterized in that the waveform detection module collects a carrier signal waveform output by a signal emitter when an electrical cabinet works by using a wave detector J1 with the model number AD 8313, the frequency modulation feedback module uses a detection circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a diode D2 and a diode D3 to screen out a peak signal, then uses a resistor R6-a resistor R8 and a capacitor C3-a capacitor C7 to form a frequency modulation circuit to adjust the signal frequency, and uses a thyristor Q4 and an operational amplifier AR3 to feed back a triode Q3 emitter signal to the output end of the operational amplifier 63AR 84 to adjust the output signal potential of the peak circuit, and uses a triode Q1 and a triode Q1 to form a switching circuit to detect the potential difference between the peak circuit output signal and the, the pulse width value of the output signal of the frequency modulation circuit is adjusted, and finally, the amplitude limiting transmitting module forms an amplitude limiting circuit by using a diode D4 and a diode D5 to limit the amplitude of the signal and sends the signal to the electrical cabinet remote monitoring terminal through a signal transmitter E1;
the frequency modulation feedback module comprises an operational amplifier AR1, an inverting input end of the operational amplifier AR1 is connected with an anode of a diode D1 and one end of a resistor R1, an output end of the operational amplifier AR1 is connected with a cathode of the diode D1, an anode of the diode D1 and a collector of a transistor Q1, an output end of the operational amplifier AR1 and one end of the resistor R1, a cathode of the diode D1 is connected with a non-inverting input end of the operational amplifier AR1 and one end of the resistor R1 and a capacitor C1, the other end of the resistor R1 and the other end of the capacitor C1 are grounded, an inverting input end of the operational amplifier AR1 is connected with the other end of the resistor R1, an output end of the operational amplifier AR1 is connected with a gate of the thyristor Q1, an emitter of the transistor Q1, a base of the transistor Q1 and one end of the resistor R1 and one end of the capacitor C1, a base of the transistor Q1 is connected with a base of the transistor Q1 and an emitter of the transistor R1 and the other end of the transistor R, the collector of the triode Q2 is connected with the emitter of the triode Q1 and one end of the resistor R7, the capacitor C4 and the capacitor C6, the other end of the resistor R6 is connected with the other end of the resistor R7 and one end of the capacitor C5, the other end of the capacitor C3 is connected with the other end of the capacitor C4 and one end of the resistor R8, the other ends of the resistor R8 and the capacitor C5 are grounded, the other end of the capacitor C6 is connected with the collector of the triode Q3 and one end of the resistor R11, the other end of the resistor R11 is connected with a power supply +5V, the other end of the resistor R12 is connected with the drain of the thyristor Q4, the source of the thyristor Q4 is connected with the non-inverting input end of the amplifier AR3, and.
2. The Internet of things-based electrical cabinet remote monitoring system is characterized in that the amplitude limiting transmitting module comprises a diode D4, the cathode of a diode D4 is connected with the anode of a diode D5 and the collector of a triode Q3, the anode of a diode D4 is connected with the cathode of a diode D5, one end of a resistor R14 and the cathode of a voltage regulator tube D6, the anode of the voltage regulator tube D6 is grounded, and the other end of the resistor R14 is connected with a signal transmitter E1.
3. The Internet of things-based electrical cabinet remote monitoring system as claimed in claim 2, wherein the waveform detection module comprises a detector J1 with the model number AD 8313, a power supply end of the detector J1 is connected with +5V, a grounding end of the detector J1 is grounded, an output end of the detector J1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with a cathode of a voltage regulator tube D1 and one end of a resistor R2, an anode of the voltage regulator tube D1 is grounded, the other end of the resistor R2 is connected with one end of a resistor R3 and one end of a capacitor C1, and the other end of the resistor R3 is connected with a non-inverting input end of an amplifier AR 1.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010132461.XA CN111245376A (en) | 2020-02-29 | 2020-02-29 | Electrical cabinet remote monitoring system based on Internet of things |
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| CN202010132461.XA CN111245376A (en) | 2020-02-29 | 2020-02-29 | Electrical cabinet remote monitoring system based on Internet of things |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009284A (en) * | 2021-04-01 | 2021-06-22 | 郑州铁路职业技术学院 | Rail transit cable monitoring system |
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| US4992380A (en) * | 1988-10-14 | 1991-02-12 | Nalco Chemical Company | Continuous on-stream monitoring of cooling tower water |
| CN110290359A (en) * | 2019-07-31 | 2019-09-27 | 深圳市众安威视技术有限公司 | A kind of camera signals Transmission system |
| CN110806724A (en) * | 2019-12-12 | 2020-02-18 | 郑州科技学院 | Remote monitoring device of numerical control machine tool |
| CN110856210A (en) * | 2019-11-29 | 2020-02-28 | 国网河南省电力公司信息通信公司 | Power distribution network communication safety protection system |
| CN110849609A (en) * | 2019-11-29 | 2020-02-28 | 郑州工程技术学院 | Rotary machine vibration fault early warning device |
-
2020
- 2020-02-29 CN CN202010132461.XA patent/CN111245376A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4992380A (en) * | 1988-10-14 | 1991-02-12 | Nalco Chemical Company | Continuous on-stream monitoring of cooling tower water |
| CN110290359A (en) * | 2019-07-31 | 2019-09-27 | 深圳市众安威视技术有限公司 | A kind of camera signals Transmission system |
| CN110856210A (en) * | 2019-11-29 | 2020-02-28 | 国网河南省电力公司信息通信公司 | Power distribution network communication safety protection system |
| CN110849609A (en) * | 2019-11-29 | 2020-02-28 | 郑州工程技术学院 | Rotary machine vibration fault early warning device |
| CN110806724A (en) * | 2019-12-12 | 2020-02-18 | 郑州科技学院 | Remote monitoring device of numerical control machine tool |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113009284A (en) * | 2021-04-01 | 2021-06-22 | 郑州铁路职业技术学院 | Rail transit cable monitoring system |
| CN113009284B (en) * | 2021-04-01 | 2024-01-05 | 郑州铁路职业技术学院 | Rail transit cable monitoring system |
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Application publication date: 20200605 |