CN109104163B - Bridge project management system based on Internet of things - Google Patents
Bridge project management system based on Internet of things Download PDFInfo
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- CN109104163B CN109104163B CN201811162248.2A CN201811162248A CN109104163B CN 109104163 B CN109104163 B CN 109104163B CN 201811162248 A CN201811162248 A CN 201811162248A CN 109104163 B CN109104163 B CN 109104163B
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- 239000003990 capacitor Substances 0.000 claims abstract description 46
- 230000001360 synchronised effect Effects 0.000 claims abstract description 22
- 238000012545 processing Methods 0.000 claims abstract description 14
- 230000008054 signal transmission Effects 0.000 claims abstract description 12
- 238000000926 separation method Methods 0.000 claims abstract description 7
- 230000000087 stabilizing effect Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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- 230000006641 stabilisation Effects 0.000 description 1
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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
- H03F3/68—Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
- G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
- G05F1/10—Regulating voltage or current
- G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
- G05F1/461—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using an operational amplifier as final control device
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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
- H03F3/45—Differential amplifiers
- H03F3/45071—Differential amplifiers with semiconductor devices only
- H03F3/45076—Differential amplifiers with semiconductor devices only characterised by the way of implementation of the active amplifying circuit in the differential amplifier
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Abstract
The invention discloses a bridge project management system based on the Internet of things, which comprises a signal receiving circuit, a synchronous calibration circuit and an operational amplifier output circuit, wherein the signal receiving circuit receives signals at the input end of a signal transmission channel for a control terminal in the bridge project management system based on the Internet of things, the synchronous calibration circuit receives the signals output by the signal receiving circuit in two paths, one path of the signals is subjected to amplitude modulation processing by an amplitude modulation circuit composed of an operational amplifier AR1, an operational amplifier AR2, a triode Q1 and a triode Q2, the other path of the signals is subjected to frequency division processing by a synchronous separation circuit composed of a triode Q3, a capacitor C4, a capacitor C5 and a variable resistor RW1, a differential circuit composed of an operational amplifier AR2, an operational amplifier AR3 and a potentiometer RP1 is designed to perform differential processing on one path of signals and the other path of signals, and finally the operational amplifier output circuit is amplified in phase by the operational amplifier AR4 and, the signal automatic calibration is realized, and the signal error is reduced.
Description
Technical Field
The invention relates to the technical field of circuits, in particular to a bridge project management system based on the Internet of things.
Background
Bridge engineering is taken as an extremely important traffic hydraulic engineering project, bridge engineering construction exists from the ancient China to the present, and the intelligent crystal of one generation and the other generation is witnessed, however, along with the development of the Internet of things, a bridge project management system of the Internet of things is developed at present, so that the comprehensive management level of the bridge project construction is greatly improved, the working efficiency and the safety level of the project are improved, in the practical application, the error range of a lot of data in the bridge project is small, a certain error range exists in the actual instrument measurement, the traditional important data are manually recorded and analyzed, so that one-step difference errors cannot be improved, and when a control terminal in the bridge project management system based on the Internet of things receives signals through a wireless signal transmission channel, the data errors can generate secondary errors, so that the error range of the data is beyond the error range, bringing about a great hidden trouble for bridge projects.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the invention aims to provide a bridge project management system based on the internet of things, which has the characteristics of ingenious conception and humanized design, detects signals in a signal transmission channel for a control terminal in the bridge project management system based on the internet of things in real time, and can automatically calibrate the signals and reduce signal errors.
The technical scheme is that the bridge project management system based on the Internet of things comprises a signal receiving circuit, a synchronous calibration circuit and an operational amplifier output circuit, wherein the signal receiving circuit receives signals at the input end of a signal transmission channel for a control terminal in the bridge project management system based on the Internet of things, high-frequency interference and low-frequency interference are filtered by a duplex filter circuit consisting of an inductor L1, a capacitor C1, a capacitor C2, a resistor R2, an inductor L2 and a capacitor C3, the synchronous calibration circuit receives the signals output by the signal receiving circuit in two paths, one path of the signals are subjected to amplitude modulation by an amplitude modulation circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a triode Q1 and a triode Q2, the other path of the signals are subjected to frequency division by a synchronous separation circuit consisting of a triode Q3, a capacitor C4, a capacitor C5 and a variable resistor RW1, and a difference circuit consisting of an operational amplifier AR2, an operational amplifier AR3 and a potentiometer 1 is designed to perform difference processing on the one path and two paths, the triode Q4 has the function of positively feeding back and adjusting the frequency value of the output signal of the frequency modulation circuit, the triode Q5 has the function of feeding back and adjusting the potential of the output signal of the differential circuit, and finally the operational amplifier output circuit is amplified in phase by the operational amplifier AR4 and then output, namely input into a signal transmission channel for a control terminal in the bridge project management system based on the Internet of things;
the synchronous calibration circuit comprises an operational amplifier AR1, wherein the non-inverting input terminal of the operational amplifier AR1 is connected with the collector of a transistor Q1, the collector of a transistor Q2, the cathode of a voltage regulator tube D3, the cathode of a diode D1 and one end of a resistor R3, the other end of the resistor R3 is connected with the base of the transistor Q3, the emitter of the transistor Q3 is grounded, the inverting input terminal of the operational amplifier AR3 is connected with one end of a resistor R3, the base of the transistor Q3 and the non-inverting input terminal of the operational amplifier AR3, the other end of the resistor R3 is grounded, the emitter of the transistor Q3 is connected with the anode of the voltage regulator tube D3, the anode of the diode D3 is connected with the resistor R3, the capacitor C3, one end of the capacitor C3 is connected with the ground, the other end of the resistor R3 is connected with the emitter of the resistor R3, the other end of the power supply +5V of the resistor R3 and the emitter, the other end of the resistor R6 is connected with the base of the transistor Q3 and one end of the variable resistor RW1, the collector of the transistor Q3 is connected with the non-inverting input end of the resistor R8 and the non-inverting input end of the operational amplifier AR3 and the base of the transistor Q5, the other end of the variable resistor RW1 and the other end of the resistor R8 are connected with the ground, the inverting input end of the operational amplifier AR3 is connected with one end of the resistor R9 and the emitter of the transistor Q5, the other end of the resistor R9 is connected with one end of the resistor R10 and the inverting input end of the operational amplifier AR2, the other end of the resistor R10 is connected with the contact 2 of the potentiometer RP1, the contact 1 of the potentiometer RP1 is connected with the positive power supply 15V, the contact 3 of the potentiometer RP1 is connected with the negative power supply 15V, and the output end.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the amplitude modulation circuit composed of the operational amplifier AR1, the operational amplifier AR2, the triode Q1 and the triode Q2 carries out amplitude modulation processing on signals, when the amplitude of the signals output by the signal receiving circuit is large, the triode Q1 and the triode Q2 are conducted, abnormal signals are discharged to the ground, when the signals are normal, the triode Q1 and the triode Q2 are not conducted, then the signals are amplified in phase by the operational amplifier AR1 and then input into the in-phase input end of the operational amplifier AR2, meanwhile, a voltage stabilizing tube D3 is designed for stabilizing voltage, the triode Q4 feeds back and adjusts the output signals of the operational amplifier AR1, when the amplitude of the signals output by the operational amplifier AR1 is low, the triode Q4 is conducted, signals are fed back into the two-way circuit, the output potentials of the two-way signals are reduced, and the effect,
2. the synchronous separation circuit composed of the triode Q3, the capacitor C4, the capacitor C5 and the variable resistor RW1 performs frequency division processing on signals, the variable resistor RW1 is adjusted to adjust the frequency of frequency division, the frequency-divided signals and two paths of amplitude-modulated signals are subjected to differential processing through a differential circuit composed of the operational amplifier AR2, the operational amplifier AR3 and the potentiometer RP1, interference signals in the signals can be effectively filtered, the signal accuracy is improved, the triode Q5 plays a role in feedback adjustment of the signal potential output by the differential circuit, the signals are further stabilized, automatic signal calibration is achieved, and signal errors are reduced.
Drawings
Fig. 1 is a block diagram of a bridge project management system based on the internet of things.
Fig. 2 is a schematic diagram of a bridge project management system based on the internet of things.
Detailed Description
The foregoing and other technical matters, features and effects of the present invention will be apparent from the following detailed description of the embodiments, which is to be read in connection with the accompanying drawings of fig. 1 to 2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
In the first embodiment, a bridge project management system based on the internet of things comprises a signal receiving circuit, a synchronous calibration circuit and an operational amplifier output circuit, wherein the signal receiving circuit receives signals at the input end of a signal transmission channel for a control terminal in the bridge project management system based on the internet of things, high-frequency interference and low-frequency interference are filtered by a duplex filter circuit consisting of an inductor L1, a capacitor C1, a capacitor C2, a resistor R2, an inductor L2 and a capacitor C3, the synchronous calibration circuit receives the signals in two paths, one path of the signals is subjected to amplitude modulation by an amplitude modulation circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a triode Q1 and a triode Q2, the other path of the signals is subjected to frequency division by a synchronous separation circuit consisting of a triode Q3, a capacitor C4, a capacitor C5 and a variable resistor 1, and one path and two paths of the signals are subjected to differential processing by a differential circuit consisting of an operational amplifier AR2, an operational amplifier AR3 and a potentiometer RP1, the triode Q4 has the function of positively feeding back and adjusting the frequency value of the output signal of the frequency modulation circuit, the triode Q5 has the function of feeding back and adjusting the potential of the output signal of the differential circuit, and finally the operational amplifier output circuit is amplified in phase by the operational amplifier AR4 and then output, namely input into a signal transmission channel for a control terminal in the bridge project management system based on the Internet of things;
the synchronous calibration circuit receives signals output by the signal receiving circuit in two paths, one path of the signals is subjected to amplitude modulation processing by an amplitude modulation circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a triode Q1 and a triode Q2, when the amplitude of the signals output by the signal receiving circuit is large, a triode Q1 and a triode Q2 are conducted, abnormal signals are discharged to the ground, when the signals are normal, a triode Q1 and a triode Q2 are not conducted, then the signals are input into an in-phase input end of an operational amplifier AR2 after being amplified in phase by an operational amplifier AR1, a voltage stabilizing tube D3 is designed for stabilizing voltage, the triode Q4 feeds back and adjusts signals output by the operational amplifier AR1, when the amplitude of the signals output by the operational amplifier AR1 is low, a triode Q4 is conducted, the signals are fed back into the two-path circuit, two-path signal output potentials are reduced, the effect of reducing the output signal potential of the synchronous calibration circuit is achieved, and the two-path of the signals are subjected to frequency division processing by a synchronous separation circuit, the variable resistor RW1 is adjusted to adjust the frequency of frequency division, the frequency-divided signal and two amplitude-modulated signals are subjected to differential processing by a differential circuit composed of an operational amplifier AR2, an operational amplifier AR3 and a potentiometer RP1, so that interference signals in the signals can be effectively filtered, the signal precision is improved, wherein the triode Q5 plays a role in feeding back and adjusting the signal potential output by the differential circuit, the signals are further stabilized, the non-inverting input end of the operational amplifier AR1 is connected with the collector of the triode Q1, the collector of the triode Q2, the cathode of a voltage stabilizing tube D3, the cathode of a diode D1 and one end of a resistor R3, the other end of the resistor R3 is connected with the base of the triode Q1, the emitter of the triode Q1 is connected with the base of the triode Q2, the emitter of the triode Q8 is grounded, the inverting input end of the operational amplifier AR1 is connected with one end of the resistor R4, the base of the triode Q36, the other end of the resistor R4 is grounded, the emitter of the transistor Q4 is connected to the anode of the voltage regulator D3, the anode of the diode D1 is connected to one end of the resistor R1, the capacitor C1 and one end of the capacitor C1, the other end of the resistor R1 is grounded, the other end of the capacitor C1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to one end of the power supply +5V and one end of the resistor R1, the emitter of the transistor Q1, the other end of the capacitor C1 is connected to one end of the resistor R1, the other end of the resistor R1 is connected to the base of the transistor Q1, the collector of the transistor Q1 is connected to one end of the resistor R1, the non-inverting input terminal of the transistor R1 and the emitter of the transistor Q1, the other end of the resistor R1 is connected to the inverting input terminal of the amplifier RP1 and the inverting input terminal of the amplifier R1, and the other terminal of the inverting input terminal of the resistor R1, and the inverting input terminal, the contact 1 of the potentiometer RP1 is connected with a positive power supply 15V, the contact 3 of the potentiometer RP1 is connected with a negative power supply 15V, and the output end of the operational amplifier AR2 is connected with the output end of the operational amplifier AR3 and the collector of the triode Q5.
In an embodiment two, on the basis of the first embodiment, the signal receiving circuit receives a signal at an input end of a signal transmission channel for a control terminal in a bridge project management system based on the internet of things, and the signal passes through a duplex filter circuit composed of an inductor L1, a capacitor C1, a capacitor C2, a resistor R2, an inductor L2 and a capacitor C3 to filter high-frequency interference and low-frequency interference, so that the anti-interference performance of the signal is improved, the positive electrode of the capacitor C1 is connected to one end of the inductor L2 and one end of the resistor R1, the other end of the resistor R1 is connected to a signal receiving port, the negative electrode of the capacitor C1 is connected to the positive electrode of the capacitor C2 and one end of the inductor L1, the negative electrode of the capacitor C2 is connected to one end of the resistor R2, the other end of the resistor R2 and the other end of the inductor L1 are grounded, the other end of the inductor L2 is.
In a third embodiment, on the basis of the first embodiment, the operational amplifier output circuit is output after in-phase amplification by using an operational amplifier AR4, that is, the operational amplifier output circuit is input into a signal transmission channel for a control terminal in the bridge project management system based on the internet of things to amplify signal power, the in-phase input end of the operational amplifier AR4 is connected to the output end of the operational amplifier AR2, the inverting input end of the operational amplifier AR4 is connected to one end of a resistor R11 and one end of a resistor R12, the other end of the resistor R12 is grounded, and the output end of the operational amplifier AR4 is connected to the other end of the resistor R11 and a signal.
When the invention is used in detail, the bridge project management system based on the Internet of things comprises a signal receiving circuit, a synchronous calibration circuit and an operational amplifier output circuit, wherein the signal receiving circuit receives signals at the input end of a signal transmission channel for a control terminal in the bridge project management system based on the Internet of things, high-frequency interference and low-frequency interference are filtered by a duplex filter circuit consisting of an inductor L1, a capacitor C1, a capacitor C2, a resistor R2, an inductor L2 and a capacitor C3, the synchronous calibration circuit receives the signals output by the signal receiving circuit in two paths, one path of the signals is subjected to amplitude modulation by an amplitude modulation circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a triode Q1 and a triode Q2, when the amplitude of the signals output by the signal receiving circuit is larger, the triodes Q1 and Q2 are conducted, abnormal signals are released to the ground, when the signals are normal, the triodes Q1 and Q2 are not conducted, then the signal is amplified in phase by an operational amplifier AR1 and then input into the in-phase input end of an operational amplifier AR2, a voltage stabilizing tube D3 is designed for voltage stabilization, a triode Q4 feeds back and adjusts the output signal of the operational amplifier AR1, when the amplitude of the output signal of the operational amplifier AR1 is lower, a triode Q4 is conducted, the feedback signal is fed back into a two-way circuit, the output potential of the two-way signal is reduced, the effect of reducing the output signal potential of the synchronous calibration circuit is achieved, the two-way signal is subjected to frequency division processing by a synchronous separation circuit composed of a triode Q3, a capacitor C4, a capacitor C5 and a variable resistor RW1, the frequency of the frequency division is adjusted by adjusting the variable resistor RW1, the frequency-divided signal and the two-path amplitude-modulated signals are subjected to differential processing by a differential circuit composed of the operational amplifier AR2, the operational amplifier AR3 and a potentiometer RP1, interference signals in effective signals can be filtered, the signal accuracy is improved, and finally, the operational amplifier output circuit outputs the signals after in-phase amplification by using the operational amplifier AR4, so that the signals can be automatically calibrated, and the signal error is reduced.
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. A bridge project management system based on the Internet of things comprises a signal receiving circuit, a synchronous calibration circuit and an operational amplifier output circuit, and is characterized in that the signal receiving circuit receives signals at the input end of a signal transmission channel for a control terminal in the bridge project management system based on the Internet of things, high-frequency interference and low-frequency interference are filtered by a duplex filter circuit consisting of an inductor L1, a capacitor C1, a capacitor C2, a resistor R2, an inductor L2 and a capacitor C3, the synchronous calibration circuit receives the signals in two paths, one path of the signals is subjected to amplitude modulation by an amplitude modulation circuit consisting of an operational amplifier AR1, an operational amplifier AR2, a triode Q1 and a triode Q2, the other path of the signals is subjected to frequency division by a synchronous separation circuit consisting of a triode Q3, a capacitor C4, a capacitor C5 and a variable resistor RW1, and one path and two paths of the signals are subjected to differential processing by a differential circuit consisting of an operational amplifier AR2, an operational amplifier 3 and a potentiometer RP1, the triode Q4 has the function of positively feeding back and adjusting the frequency value of the output signal of the frequency modulation circuit, the triode Q5 has the function of feeding back and adjusting the potential of the output signal of the differential circuit, and finally the operational amplifier output circuit is amplified in phase by the operational amplifier AR4 and then output, namely input into a signal transmission channel for a control terminal in the bridge project management system based on the Internet of things;
the synchronous calibration circuit comprises an operational amplifier AR1, wherein the non-inverting input terminal of the operational amplifier AR1 is connected with the collector of a transistor Q1, the collector of a transistor Q2, the cathode of a voltage regulator tube D3, the cathode of a diode D1 and one end of a resistor R3, the other end of the resistor R3 is connected with the base of the transistor Q3, the emitter of the transistor Q3 is grounded, the inverting input terminal of the operational amplifier AR3 is connected with one end of a resistor R3, the base of the transistor Q3 and the non-inverting input terminal of the operational amplifier AR3, the other end of the resistor R3 is grounded, the emitter of the transistor Q3 is connected with the anode of the voltage regulator tube D3, the anode of the diode D3 is connected with the resistor R3, the capacitor C3, one end of the capacitor C3 is connected with the ground, the other end of the resistor R3 is connected with the emitter of the resistor R3, the other end of the power supply +5V of the resistor R3 and the emitter, the other end of the resistor R6 is connected with the base of the transistor Q3 and one end of the variable resistor RW1, the collector of the transistor Q3 is connected with the non-inverting input end of the resistor R8 and the non-inverting input end of the operational amplifier AR3 and the base of the transistor Q5, the other end of the variable resistor RW1 and the other end of the resistor R8 are connected with the ground, the inverting input end of the operational amplifier AR3 is connected with one end of the resistor R9 and the emitter of the transistor Q5, the other end of the resistor R9 is connected with one end of the resistor R10 and the inverting input end of the operational amplifier AR2, the other end of the resistor R10 is connected with the contact 2 of the potentiometer RP1, the contact 1 of the potentiometer RP1 is connected with the positive power supply 15V, the contact 3 of the potentiometer RP1 is connected with the negative power supply 15V, and the output end.
2. The Internet of things-based bridge project management system according to claim 1, wherein the signal receiving circuit comprises a capacitor C1, an anode of a capacitor C1 is connected to one end of an inductor L2 and one end of a resistor R1, the other end of a resistor R1 is connected to the signal receiving port, a cathode of a capacitor C1 is connected to an anode of a capacitor C2 and one end of an inductor L1, a cathode of a capacitor C2 is connected to one end of a resistor R2, the other end of a resistor R2 and the other end of an inductor L1 are grounded, the other end of an inductor L2 is connected to one end of a capacitor C3 and an anode of a diode D1, and the other end of a capacitor C3 is grounded.
3. The Internet of things-based bridge project management system according to claim 1 or 2, wherein the operational amplifier output circuit comprises an operational amplifier AR4, a non-inverting input end of the operational amplifier AR4 is connected with an output end of the operational amplifier AR2, an inverting input end of the operational amplifier AR4 is connected with one end of a resistor R11 and one end of a resistor R12, the other end of the resistor R12 is grounded, and an output end of the operational amplifier AR4 is connected with the other end of the resistor R11 and the signal output port.
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| CN201811162248.2A CN109104163B (en) | 2018-09-30 | 2018-09-30 | Bridge project management system based on Internet of things |
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| CN109660252B (en) * | 2018-12-29 | 2020-03-17 | 河南鑫安利安全科技股份有限公司 | Portable signal calibration device for meteorological measuring instrument |
| CN109814465B (en) * | 2019-02-26 | 2021-04-09 | 安徽皖水水务发展有限公司 | Water supply remote monitoring system based on Internet of things |
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| CN111294303A (en) * | 2020-03-16 | 2020-06-16 | 无锡原旭机电科技有限公司 | Bridge safety management system based on Internet of things |
| CN111508264A (en) * | 2020-04-08 | 2020-08-07 | 江苏弘扩信息科技有限公司 | Intelligent parking monitoring system based on block chain |
| CN111510501B (en) * | 2020-04-24 | 2022-10-18 | 国网河南省电力公司信息通信公司 | Frequency-adjustable Internet of things terminal |
| CN112180803A (en) * | 2020-10-14 | 2021-01-05 | 深圳市洛奇机电科技有限公司 | Logistics Internet of things positioning and monitoring system |
| CN113027531B (en) * | 2021-03-30 | 2022-02-01 | 河北交通职业技术学院 | Cold region tunnel freeze injury regulation and control system based on Internet of things |
| CN113517898B (en) * | 2021-04-27 | 2022-08-26 | 河南城建学院 | Bridge construction signal processing apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008016233U1 (en) * | 2008-12-08 | 2009-03-05 | Liu, Mao-Liang | Combination equalizer and calibration circuitry for an audio system |
| US8026759B2 (en) * | 2009-08-11 | 2011-09-27 | Samsung Electronics Co., Ltd. | Multistage amplifying circuit |
| CN106301343A (en) * | 2016-08-17 | 2017-01-04 | 中国电子科技集团公司第四十研究所 | A kind of level self-defined multi-protocols digital audio and video signals generation system and method |
| CN107102216A (en) * | 2017-03-23 | 2017-08-29 | 北京中科国技信息系统有限公司 | Radiation immunity multisignal source measuring system and method |
| CN207304500U (en) * | 2017-09-29 | 2018-05-01 | 成都腾诺科技有限公司 | A kind of amplification system of multi-path antenna |
-
2018
- 2018-09-30 CN CN201811162248.2A patent/CN109104163B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202008016233U1 (en) * | 2008-12-08 | 2009-03-05 | Liu, Mao-Liang | Combination equalizer and calibration circuitry for an audio system |
| US8026759B2 (en) * | 2009-08-11 | 2011-09-27 | Samsung Electronics Co., Ltd. | Multistage amplifying circuit |
| CN106301343A (en) * | 2016-08-17 | 2017-01-04 | 中国电子科技集团公司第四十研究所 | A kind of level self-defined multi-protocols digital audio and video signals generation system and method |
| CN107102216A (en) * | 2017-03-23 | 2017-08-29 | 北京中科国技信息系统有限公司 | Radiation immunity multisignal source measuring system and method |
| CN207304500U (en) * | 2017-09-29 | 2018-05-01 | 成都腾诺科技有限公司 | A kind of amplification system of multi-path antenna |
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