CN111510176A - Digital microwave control system - Google Patents
Digital microwave control system Download PDFInfo
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- CN111510176A CN111510176A CN202010324492.5A CN202010324492A CN111510176A CN 111510176 A CN111510176 A CN 111510176A CN 202010324492 A CN202010324492 A CN 202010324492A CN 111510176 A CN111510176 A CN 111510176A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
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Abstract
The invention discloses a digital microwave control system, which comprises a signal sampling module and an amplitude modulation comparison module, wherein the signal sampling module samples a signal at a signal transmitting end in the digital microwave control system by using a signal sampler J1 with the model of DAM-3056AH, the amplitude modulation comparison module uses a triode Q1, a triode Q2, a variable resistor RW1 and a variable resistor RW2 to form a composite circuit to adjust signal waveform, simultaneously uses an operational amplifier AR2 and an operational amplifier AR3 to be connected with a reverse phase end to buffer signals, simultaneously uses a triode Q3 to detect an output signal of an operational amplifier AR2 and an emitter potential difference of a triode Q1, adjusts the output signal potential of the operational amplifier AR4, one path of the output signal of the operational amplifier AR3 is input into an in-phase input end of the operational amplifier AR4, the other path is input into an inverse phase amplitude limiting input end of the operational amplifier AR5 after the output signal of the operational amplifier AR5 compares signals, and triggers a signal emitter E2 to be sent into a terminal of the microwave control system, the signal is analyzed by a digital microwave control system terminal.
Description
Technical Field
The invention relates to the technical field of microwaves, in particular to a digital microwave control system.
Background
Digital microwave is used as a transmission mode of a communication network, can form the whole communication transmission network together with other transmission modes, in order to transmit multi-channel signals on one microwave line at the same time, a digital microwave system usually adopts a time division multiplexing technology as a multiplexing technology, multiplexing levels in the digital microwave system are subjected to step-by-step multiplexing according to the levels defined by PDH, and channels of a microwave control system of the time division multiplexing technology are interconnected and act.
Disclosure of Invention
In view of the above situation, an object of the present invention is to provide a digital microwave control system, which can sample and adjust a node signal in the digital microwave control system and convert the node signal into an analysis signal of a terminal of the digital microwave control system.
The technical scheme includes that the digital microwave control system comprises a signal sampling module and an amplitude modulation comparison module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample signals at a signal transmitting end in the digital microwave control system, the amplitude modulation comparison module uses a triode Q1, a triode Q2, a variable resistor RW1 and a variable resistor RW2 to form a composite circuit to adjust signal waveforms, meanwhile, an operational amplifier AR2 and an operational amplifier AR3 are used for connecting buffer signals with a reverse phase end, a triode Q4 is used for detecting the potential difference of a collector and an emitter of a triode Q1, a high level signal is fed back to a base of a triode Q2 to adjust the magnitude of the detected signal potential value of the composite circuit, meanwhile, a triode Q3 is used for detecting the potential difference of an output signal of the operational amplifier AR2 and the emitter of the triode Q1 to adjust the output signal potential of the operational amplifier AR4, and one path of the output signal of the operational amplifier 3 is input to an, the other path of the signal is limited by an amplitude limiting circuit formed by a diode D3 and a diode D4 and then is input into the inverting input end of an operational amplifier AR5, and the operational amplifier AR5 compares the signal and then triggers a signal emitter E1 to send the signal to a digital microwave control system terminal;
the amplitude modulation comparison module comprises a triode Q, wherein the base electrode of the triode Q is connected with a resistor R, one end of the resistor R and the negative electrode of a diode D, the emitting electrode of the triode Q is connected with one end of the resistor R and one end of a capacitor C, the other ends of the resistor R and the capacitor C are grounded, the positive electrode of the diode D is connected with the sliding end of a variable resistor RW, one end of the variable resistor RW is connected with one end of the resistor R, the other end of the variable resistor RW is connected with the base electrode of the triode Q and the other end of the resistor R, the emitting electrode of the triode Q is connected with one end of the variable resistor RW, one end of the capacitor C, the base electrode of the triode Q and the collector electrode of the triode Q, the collector electrode of the triode Q is connected with the other end of the resistor R, the other end of the capacitor C and the collector electrode of the triode Q, the emitting electrode of the triode Q is connected with, the sliding end of the variable resistor RW2 is connected to the non-inverting input end of the amplifier AR2 and one end of the resistor R8, the output end of the operational amplifier AR2 is connected to the non-inverting input end of the operational amplifier AR3, the base of the transistor Q3 and one end of the resistor R10, the other end of the resistor R8, the inverting input end of the operational amplifier AR2 is connected to the other end of the resistor R9 and the inverting input end of the operational amplifier AR3, the emitter of the transistor Q5, the output end of the operational amplifier AR2 is connected to the other end of the resistor R2 and the base of the transistor Q2, one end of the resistor R2 and the non-inverting input end of the operational amplifier AR2, the output end of the operational amplifier AR2 is connected to the anode of the diode D2, the cathode of the diode D2 and the base of the transistor Q2, the other end of the resistor R2 and the non-inverting input end of the operational amplifier AR2, the inverting input end of the transistor Q2 is connected to the emitter of the transistor Q2, the inverting input end of the operational amplifier AR5, the other end of the resistor R11 is grounded, the output end of the operational amplifier AR4 is connected with the non-inverting input end of the operational amplifier AR5, and the output end of the operational amplifier AR5 is connected with the signal transmitter E1.
Due to the adoption of the technical scheme, compared with the prior art, the invention has the following advantages;
1. the signal is divided by using the variable resistor RW1 to be a detection voltage for the conduction of the triode Q1, namely, the loop resistance value of the variable resistor RW1 is matched with the triode Q1 to adjust the signal amplitude, the conduction trigger signal of the triode Q1 can be adjusted by adjusting the loop resistance value of the variable resistor RW1, when the signal contains a high-level signal, the triode Q1 is conducted, the voltage is divided by the variable resistor RW2 to provide a potential for the collector of the triode Q2, the signal amplitude reduction depth is further deepened by using the triode Q2, and the signal peak is filtered;
2. the triode Q3 is used for detecting the potential difference between the output signal of the operational amplifier AR2 and the emitter of the triode Q1, the potential of the output signal of the operational amplifier AR4 is adjusted, the waveform of a fine-tuning signal of the signal emitted by the final signal emitter E1 is adjusted, one path of the output signal of the operational amplifier AR3 is input into the non-inverting input end of the operational amplifier AR4, the other path of the output signal is input into the inverting input end of the operational amplifier AR5 after being limited by the limiting circuit formed by the diode D3 and the diode D4, the operational amplifier AR4 and the operational amplifier AR5 adjust signal waveforms in two stages, the operational amplifier AR4 is adjusted by the triode Q3 in the first stage, the operational amplifier AR5 is adjusted by the triode Q5 in the second stage, the triode Q3 is adjusted in a high level, and the triode Q5 is adjusted in a low level, so that the accuracy of the signal received by the digital microwave control system terminal is further guaranteed, and finally the signal is sent into the digital microwave control system terminal by the signal transmitter E1, and the signal.
Drawings
Fig. 1 is a schematic circuit diagram of a digital microwave control system according to the present invention.
Fig. 2 is a comparison block diagram of amplitude modulation of a digital microwave control system according to the present invention.
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 1-2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
The embodiment I, a digital microwave control system, includes a signal sampling module, an amplitude modulation comparison module, said signal sampling module uses a signal sampler J1 with model number DAM-3056AH to sample the signal of the signal transmitting end in the digital microwave control system, said amplitude modulation comparison module uses a transistor Q1, a transistor Q2, a variable resistor RW1, a variable resistor RW2 to compose a composite circuit to adjust the signal waveform, uses an operational amplifier AR2, an operational amplifier AR3 to connect with the inverting terminal to buffer the signal, uses a transistor Q4 to detect the potential difference of the collector and emitter of the transistor Q1, feeds back the high level signal to the base of the transistor Q2, adjusts the magnitude of the composite circuit detected signal potential, uses a transistor Q3 to detect the potential difference of the output signal of the operational amplifier AR2 and the emitter of the transistor Q1, adjusts the output signal potential of the operational amplifier AR4, and the operational amplifier 3 outputs a signal which is input to the non-inverting terminal of the operational amplifier AR4, the other path of the signal is limited by an amplitude limiting circuit formed by a diode D3 and a diode D4 and then is input into the inverting input end of an operational amplifier AR5, and the operational amplifier AR5 compares the signal and then triggers a signal emitter E1 to send the signal to a digital microwave control system terminal;
the amplitude modulation comparison module uses a triode Q1, a triode Q2, a variable resistor RW1 and a variable resistor RW2 to form a composite circuit to adjust signal waveform, uses the variable resistor RW1 to divide the signal voltage to obtain a detection voltage for conducting the triode Q1, namely uses the loop resistance value of the variable resistor RW1 to cooperate with the triode Q1 to adjust the signal amplitude, can adjust the conducting trigger signal of the triode Q1 by adjusting the loop resistance value of the variable resistor RW1, when the signal contains a high-level signal, the triode Q1 is conducted, provides a potential for the collector of the triode Q2 after being divided by the variable resistor RW2, uses the triode Q2 to further deepen the signal amplitude reduction depth and filter out the signal peak, uses an operational amplifier AR2 and an operational amplifier AR3 to connect a buffer signal with the inverting terminal to prepare for next signal adjustment, and uses the triode Q4 to detect the potential difference of the collector and the emitter of the triode Q1, feeding back a high-level signal to a base electrode of a triode Q2, adjusting the magnitude of a detection signal potential value of a composite circuit, ensuring the waveform precision of the adjustment signal of the composite circuit, simultaneously detecting the output signal of an operational amplifier AR2 and the potential difference of an emitter of the triode Q1 by using a triode Q3, adjusting the output signal potential of an operational amplifier AR4, transmitting a signal fine-adjustment signal waveform for a final signal transmitter E1, inputting one path of the output signal of the operational amplifier AR3 into a non-inverting input end of the operational amplifier AR4, inputting the other path of the output signal into an inverting input end of the operational amplifier AR5 after forming a limiting circuit through a diode D3 and a diode D4, adjusting the signal potential of the operational amplifier AR5 by using an operational amplifier AR4 and an operational amplifier AR5 as two-stage adjustment signal waveforms, adjusting the operational amplifier AR4 by using a triode Q3 for the operational amplifier AR5 for the second stage, adjusting the triode Q5 for the triode Q3 as a high, finally, the signal is sent to a digital microwave control system terminal through a signal transmitter E1, and response can be timely made to the attenuation signal;
the amplitude modulation comparison module has a specific structure that the base of a transistor Q2 is connected with a resistor R2, one end of the resistor R2 and the cathode of a diode D2, the emitter of the transistor Q2 is connected with the resistor R2 and one end of a capacitor C2, the other ends of the resistor R2 and the capacitor C2 are grounded, the anode of the diode D2 is connected with the sliding end of a variable resistor RW2, one end of the variable resistor RW2 is connected with one end of the resistor R2, the other end of the variable resistor RW2 is connected with the base of the transistor Q2 and the other end of the resistor R2, the emitter of the transistor Q2 is connected with one end of the variable resistor RW2 and the resistor R2, one end of the capacitor C2 and the base of the transistor Q2, the collector of the transistor Q2 is connected with the other end of the resistor R2, the other end of the collector of the capacitor C2 and the collector of the transistor Q2 are connected with the ground, and the other end of the variable resistor RW2 is connected with the ground, the collector of the transistor R2 and the collector of the transistor R2, the sliding end of the variable resistor RW2 is connected to the non-inverting input end of the amplifier AR2 and one end of the resistor R8, the output end of the operational amplifier AR2 is connected to the non-inverting input end of the operational amplifier AR3, the base of the transistor Q3 and one end of the resistor R10, the other end of the resistor R8, the inverting input end of the operational amplifier AR2 is connected to the other end of the resistor R9 and the inverting input end of the operational amplifier AR3, the emitter of the transistor Q5, the output end of the operational amplifier AR2 is connected to the other end of the resistor R2 and the base of the transistor Q2, one end of the resistor R2 and the non-inverting input end of the operational amplifier AR2, the output end of the operational amplifier AR2 is connected to the anode of the diode D2, the cathode of the diode D2 and the base of the transistor Q2, the other end of the resistor R2 and the non-inverting input end of the operational amplifier AR2, the inverting input end of the transistor Q2 is connected to the emitter of the transistor Q2, the inverting input end of the operational amplifier AR5, the other end of the resistor R11 is grounded, the output end of the operational amplifier AR4 is connected with the non-inverting input end of the operational amplifier AR5, and the output end of the operational amplifier AR5 is connected with the signal transmitter E1.
On the basis of the scheme, the signal sampling module comprises a signal sampler J1 with the model of DAM-3056AH, a power supply end of a signal sampler J1 is connected with +5V, a grounding end of a signal sampler J1 is grounded, an output end of the signal sampler J1 is connected with a negative electrode of a voltage regulator tube D1 and a non-inverting input end of an operational amplifier AR1, an anode of a voltage regulator tube D1 is grounded, an inverting input end of the operational amplifier AR1 is connected with one end of a resistor R1 and a resistor R2, the other end of the resistor R1 is grounded, and an output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and an anode of a diode D2.
When the invention is used in concrete, the digital microwave control system comprises a signal sampling module and an amplitude modulation comparison module, wherein the signal sampling module uses a signal sampler J1 with the model of DAM-3056AH to sample signals at a signal transmitting end in the digital microwave control system, the amplitude modulation comparison module uses a triode Q1, a triode Q2, a variable resistor RW1 and a variable resistor RW2 to form a composite circuit to adjust signal waveforms, uses a variable resistor RW1 to divide the signals into detection voltages for the conduction of a triode Q1, namely, the loop resistance value of the variable resistor RW1 is matched with the triode Q1 to adjust the signal amplitude, the conduction trigger signal of the triode Q1 can be adjusted by adjusting the loop resistance value of the variable resistor RW1, when the signals contain high-level signals, the triode Q1 is conducted, and the potential is provided for a collector of the triode Q2 after the voltage division is carried out by the variable resistor RW2, the amplitude reduction depth of a signal is further deepened by using a triode Q2, signal spikes are filtered, meanwhile, an operational amplifier AR2 and an operational amplifier AR3 are used for connecting a buffer signal with the inverting terminal to prepare for next signal regulation, a triode Q4 is used for detecting the potential difference of a collector and an emitter of the triode Q1, a high-level signal is fed back to the base of a triode Q2, the magnitude of the detected signal potential value of a composite circuit is regulated to ensure the waveform precision of a regulated signal of the composite circuit, meanwhile, a triode Q3 is used for detecting the potential difference of an emitter of an operational amplifier AR2 and the potential difference of an emitter of a triode Q1, the potential of an output signal of an operational amplifier AR4 is regulated to finally transmit a signal fine-tuning signal waveform of a signal transmitter E1, one path of the output signal of the operational amplifier AR3 is input into the inverting terminal of the operational amplifier AR4, the other path of the output signal is, the operational amplifier AR4 and the operational amplifier AR5 adjust signal waveforms in two stages, the operational amplifier AR4 is adjusted by the aid of the triode Q3 in one stage, the operational amplifier AR5 is adjusted by the aid of the triode Q5 in the second stage, the triode Q3 is adjusted in a high level mode, the triode Q5 is adjusted in a low level mode, accuracy of receiving signals at the terminal of the digital microwave control system is further guaranteed, and finally the signals are sent to the terminal of the digital microwave control system through the signal transmitter E1 and can respond to the attenuation signals in time.
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 (2)
1. A digital microwave control system comprises a signal sampling module and an amplitude modulation comparison module, and is characterized in that the signal sampling module samples a signal at a signal transmitting end in the digital microwave control system by using a signal sampler J1 with the model of DAM-3056AH, the amplitude modulation comparison module uses a triode Q1, a triode Q2, a variable resistor RW1 and a variable resistor RW2 to form a composite circuit to adjust signal waveform, simultaneously uses an operational amplifier AR2 and an operational amplifier AR3 to be connected with a reverse phase end to buffer signals, uses a triode Q4 to detect the potential difference of a collector and an emitter of the triode Q1, feeds back a high-level signal to a base of a triode Q2, adjusts the magnitude of the detected signal potential value of the composite circuit, uses a triode Q3 to detect the potential difference of an output signal of the operational amplifier AR2 and the emitter of the triode Q1, adjusts the potential of the output signal of the operational amplifier AR4, and inputs one path of the output signal of the operational amplifier 3 to an, the other path of the signal is limited by an amplitude limiting circuit formed by a diode D3 and a diode D4 and then is input into the inverting input end of an operational amplifier AR5, and the operational amplifier AR5 compares the signal and then triggers a signal emitter E1 to send the signal to a digital microwave control system terminal;
the amplitude modulation comparison module comprises a triode Q, wherein the base electrode of the triode Q is connected with a resistor R, one end of the resistor R and the negative electrode of a diode D, the emitting electrode of the triode Q is connected with one end of the resistor R and one end of a capacitor C, the other ends of the resistor R and the capacitor C are grounded, the positive electrode of the diode D is connected with the sliding end of a variable resistor RW, one end of the variable resistor RW is connected with one end of the resistor R, the other end of the variable resistor RW is connected with the base electrode of the triode Q and the other end of the resistor R, the emitting electrode of the triode Q is connected with one end of the variable resistor RW, one end of the capacitor C, the base electrode of the triode Q and the collector electrode of the triode Q, the collector electrode of the triode Q is connected with the other end of the resistor R, the other end of the capacitor C and the collector electrode of the triode Q, the emitting electrode of the triode Q is connected with, the sliding end of the variable resistor RW2 is connected to the non-inverting input end of the amplifier AR2 and one end of the resistor R8, the output end of the operational amplifier AR2 is connected to the non-inverting input end of the operational amplifier AR3, the base of the transistor Q3 and one end of the resistor R10, the other end of the resistor R8, the inverting input end of the operational amplifier AR2 is connected to the other end of the resistor R9 and the inverting input end of the operational amplifier AR3, the emitter of the transistor Q5, the output end of the operational amplifier AR2 is connected to the other end of the resistor R2 and the base of the transistor Q2, one end of the resistor R2 and the non-inverting input end of the operational amplifier AR2, the output end of the operational amplifier AR2 is connected to the anode of the diode D2, the cathode of the diode D2 and the base of the transistor Q2, the other end of the resistor R2 and the non-inverting input end of the operational amplifier AR2, the inverting input end of the transistor Q2 is connected to the emitter of the transistor Q2, the inverting input end of the operational amplifier AR5, the other end of the resistor R11 is grounded, the output end of the operational amplifier AR4 is connected with the non-inverting input end of the operational amplifier AR5, and the output end of the operational amplifier AR5 is connected with the signal transmitter E1.
2. The digital microwave control system as claimed in claim 1, wherein the signal sampling module comprises a signal sampler J1 with model number DAM-3056AH, a power supply terminal of the signal sampler J1 is connected with +5V, a ground terminal of the signal sampler J1 is connected with ground, an output terminal of the signal sampler J1 is connected with a negative electrode of a voltage regulator tube D1 and a non-inverting input terminal of an operational amplifier AR1, an anode of a voltage regulator tube D1 is connected with ground, an inverting input terminal of the operational amplifier AR1 is connected with one end of a resistor R1 and a resistor R2, the other end of the resistor R1 is connected with ground, and an output terminal of the operational amplifier AR1 is connected with the other end of the resistor R2 and an anode of a diode D2.
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998025339A1 (en) * | 1996-12-02 | 1998-06-11 | Ericsson Inc. | Dynamic biasing circuit for amplifiers |
| KR100656931B1 (en) * | 2005-10-26 | 2006-12-13 | 주식회사 레이닉스 | Laser diode driving apparatus for laser display |
| CN203772933U (en) * | 2014-03-07 | 2014-08-13 | 杭州电子科技大学 | Isolation voltage sampling circuit |
| CN108572579A (en) * | 2018-07-26 | 2018-09-25 | 黄河科技学院 | Agricultural greenhouse Data Management Analysis system based on Internet of Things |
| CN109379309A (en) * | 2018-12-07 | 2019-02-22 | 河南华兴通信技术有限公司 | Integrated digital microwave predistortion circuit |
| CN109596483A (en) * | 2019-01-11 | 2019-04-09 | 河南鑫安利安全科技股份有限公司 | A kind of operating environment detection system |
| CN109831262A (en) * | 2019-03-28 | 2019-05-31 | 河南天硕机电设备工程有限公司 | A kind of Intelligent Low Temperature grain storage system signal calibration circuit |
| CN209231506U (en) * | 2018-12-07 | 2019-08-09 | 河南华兴通信技术有限公司 | A kind of portable surveillance radar |
-
2020
- 2020-04-23 CN CN202010324492.5A patent/CN111510176B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998025339A1 (en) * | 1996-12-02 | 1998-06-11 | Ericsson Inc. | Dynamic biasing circuit for amplifiers |
| KR100656931B1 (en) * | 2005-10-26 | 2006-12-13 | 주식회사 레이닉스 | Laser diode driving apparatus for laser display |
| CN203772933U (en) * | 2014-03-07 | 2014-08-13 | 杭州电子科技大学 | Isolation voltage sampling circuit |
| CN108572579A (en) * | 2018-07-26 | 2018-09-25 | 黄河科技学院 | Agricultural greenhouse Data Management Analysis system based on Internet of Things |
| CN109379309A (en) * | 2018-12-07 | 2019-02-22 | 河南华兴通信技术有限公司 | Integrated digital microwave predistortion circuit |
| CN209231506U (en) * | 2018-12-07 | 2019-08-09 | 河南华兴通信技术有限公司 | A kind of portable surveillance radar |
| CN109596483A (en) * | 2019-01-11 | 2019-04-09 | 河南鑫安利安全科技股份有限公司 | A kind of operating environment detection system |
| CN109831262A (en) * | 2019-03-28 | 2019-05-31 | 河南天硕机电设备工程有限公司 | A kind of Intelligent Low Temperature grain storage system signal calibration circuit |
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