CN111157778B - Electric power communication signal synchronous detection circuit - Google Patents
Electric power communication signal synchronous detection circuit Download PDFInfo
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- CN111157778B CN111157778B CN202010132339.2A CN202010132339A CN111157778B CN 111157778 B CN111157778 B CN 111157778B CN 202010132339 A CN202010132339 A CN 202010132339A CN 111157778 B CN111157778 B CN 111157778B
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- 238000004891 communication Methods 0.000 title claims abstract description 51
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 18
- 238000001514 detection method Methods 0.000 title claims abstract description 16
- 239000003990 capacitor Substances 0.000 claims abstract description 26
- 239000002131 composite material Substances 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 5
- 230000003068 static effect Effects 0.000 description 3
- 230000003139 buffering effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/04—Measuring peak values or amplitude or envelope of ac or of pulses
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/30—Structural combination of electric measuring instruments with basic electronic circuits, e.g. with amplifier
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R21/00—Arrangements for measuring electric power or power factor
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
- H04L7/007—Detection of the synchronisation error by features other than the received signal transition detection of error based on maximum signal power, e.g. peak value, maximizing autocorrelation
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Abstract
The invention discloses a synchronous detection circuit for electric power communication signals, which comprises a power acquisition module and a peak difference module, wherein the power acquisition module acquires power signals of electric power communication end nodes by using a power collector J1 with the model of YK-3D3, the peak difference module selects peak signals by using a peak circuit consisting of an operational amplifier AR3, a diode D2 and a diode D3, a triode Q1 and a triode Q2 form a composite circuit to detect signal potential, then a differential circuit consisting of the operational amplifier AR5 and the operational amplifier AR6 is used to carry out differential regulation on signals output by the operational amplifier AR2 and the operational amplifier AR4, finally an inductor L1, a capacitor C1 and a capacitor C2 are used to filter the signals, and a circuit consisting of the diode D4 and the diode D5 is used to limit the signals within 0-5V and send the signals to a control terminal of the electric power communication node through a signal transmitter E1, and the power signals of the electric power communication end nodes can directly carry out synchronous communication on the power line communication of the control terminal through the electric power communication of the electric power communication end nodes And (6) signal correction.
Description
Technical Field
The invention relates to the technical field of power communication, in particular to a power communication signal synchronous detection circuit.
Background
Modern power line communication technology is more and more complex, especially in multi-node communication involving the same power line medium, multiple communication terminal nodes need synchronization of clocks and accurate opening of communication windows, which is important for ensuring communication quality, and the power line zero crossing point is generally used as a synchronization signal in the industry, and the power consumption of a power line zero crossing detection signal is higher by directly adopting a resistance voltage division current limiting mode;
a zero-crossing detection circuit is suitable for power line carrier communication, mainly adopts a half-wave rectification principle to reduce the power consumption of the zero-crossing detection circuit to half of the original power consumption, an input and output circuit is completely isolated electrically, the anti-interference capability is strong, if the zero-crossing detection circuit is used as a synchronous signal in the power line communication, the power consumption is too high under the standby condition, and the energy efficiency index under the low power consumption can not be met.
Disclosure of Invention
In view of the above, to overcome the defects in the prior art, an object of the present invention is to provide a power communication signal synchronization detection circuit, which can detect and adjust a power signal of a power communication node, and convert the power signal into a synchronization trigger correction signal of a power communication node control terminal.
The technical scheme includes that the synchronous detection circuit for the electric power communication signals comprises a power acquisition module and a peak difference module, wherein the power acquisition module acquires power signals of end nodes of electric power communication by using a power collector J1 with the model of YK-3D3, the peak difference module selects peak signals by using a peak circuit consisting of an operational amplifier AR3, a diode D2 and a diode D3, a composite circuit detection signal potential consisting of a triode Q1 and a triode Q2 is adjusted, the in-phase input end of the operational amplifier AR2 and the reverse phase input end of the operational amplifier AR4 are adjusted, then a differential circuit consisting of an operational amplifier AR5 and an operational amplifier AR6 is used for carrying out differential adjustment on output signals of the operational amplifier AR2 and the operational amplifier AR4, finally, an inductor L1, a capacitor C1 and a capacitor C2 are used for filtering the signals, and a limiting signal is limited within 0- +5V by using a circuit consisting of a diode D4 and a diode D5, sent into the power communication node control terminal via 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 operational amplifier AR3, the diode D2 and the diode D3 are used for forming a peak circuit to screen out a peak signal, low-potential interference signals can be filtered, meanwhile, the stability of the signal is ensured, the triode Q1 and the triode Q2 are used for forming a composite circuit to detect the signal potential, the conduction voltage property of the triode Q1 and the triode Q2 is used for adjusting the potential of the non-inverting input end of the operational amplifier AR2 and the potential of the inverting input end of the operational amplifier AR4, the operational amplifier AR2 is used for buffering the signal, the operational amplifier AR4 plays a role of comparing the signal, and the differential regulation is prepared for further so as to ensure the accuracy of the differential regulation and have great reliability;
2. the operational amplifier AR5 and the operational amplifier AR6 are used for forming a differential circuit to differentially adjust output signals of the operational amplifier AR2 and the operational amplifier AR4, a static working point of a signal is stabilized, stability and accuracy of a power signal are guaranteed, finally, an inductor L1, a capacitor C1 and a capacitor C2 are used for filtering the signal, a limiting circuit formed by a diode D4 and a diode D5 is used for limiting the signal within 0- +5V, the trigger voltage exceeding the signal transmitter E1 is prevented, the trigger voltage is transmitted to a power communication node control terminal through a signal transmitter E1, a synchronous trigger correction signal of the power communication node control terminal is adopted, and by adopting the mode, the synchronous signal correction on power line communication of the communication node control terminal can be directly carried out through a power signal of the power communication node.
Drawings
Fig. 1 is a peak difference block diagram of a power communication signal synchronous detection circuit according to the present invention.
Fig. 2 is a power acquisition block diagram of a power communication signal synchronous detection circuit 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.
In one embodiment, a synchronous detection circuit for power communication signals comprises a power acquisition module and a peak difference module, the power acquisition module adopts a power collector J1 with the model number YK-3D3 to acquire power signals of the power communication end node, the peak value difference module utilizes an operational amplifier AR3, a diode D2 and a diode D3 to form a peak value circuit to screen out peak value signals, meanwhile, the triode Q1 and the triode Q2 form a composite circuit for detecting signal potential, the potential of the non-inverting input end of the operational amplifier AR2 and the potential of the inverting input end of the operational amplifier AR4 are adjusted, then, a difference circuit consisting of an operational amplifier AR5 and an operational amplifier AR6 is used for carrying out differential adjustment on output signals of the operational amplifier AR2 and the operational amplifier AR4, finally, an inductor L1, a capacitor C1 and a capacitor C2 are used for filtering the signals, a limiting circuit consisting of a diode D4 and a diode D5 limits the signal to be within 0- +5V, and the signal is sent to the control terminal of the power communication node through a signal transmitter E1;
the peak value difference module utilizes an operational amplifier AR3, a diode D2 and a diode D3 to form a peak value circuit to screen out a peak value signal, can filter out a low potential interference signal and simultaneously ensure the stability of the signal, utilizes a triode Q1 and a triode Q2 to form a composite circuit to detect the signal potential, utilizes the conduction voltage property of a triode Q1 and a triode Q2 to adjust the potential of the non-inverting input end of an operational amplifier AR2 and the potential of the inverting input end of an operational amplifier AR4, utilizes an operational amplifier AR2 to buffer the signal, utilizes the operational amplifier AR4 to play a role of comparing the signal, prepares for further difference adjustment to ensure the accuracy of the difference adjustment, then utilizes an operational amplifier AR5 and an operational amplifier AR6 to form a difference circuit to carry out the difference adjustment on the signals output by the operational amplifier AR2 and the operational amplifier AR4 to stabilize the static working point of the signal and ensure the stability and the accuracy of the power signal, and finally utilizes an inductor L1, a capacitor C1 and a capacitor C2 to filter the signal, the diode D4 and the diode D5 are used for forming a limiting circuit to limit signals within 0-5V, the trigger voltage exceeding the signal emitter E1 is prevented from being sent to the power communication node control terminal through the signal emitter E1, and the synchronous trigger correction signal of the power communication node control terminal can be directly corrected on the synchronous signal of the power line communication of the communication node control terminal through the power communication end node power signal in the mode;
the peak value difference module has the specific structure that the non-inverting input end of an operational amplifier AR3 is connected with the anode of a diode D2 and one end of a capacitor C6, the inverting input end of an operational amplifier AR3 is grounded, the output end of an operational amplifier AR3 is connected with the cathode of a diode D2 and a diode D3 and the collector of a triode Q1 and the other end of a capacitor C6, the anode of a diode D3 is connected with the non-inverting input end of an operational amplifier AR4, the inverting input end of an operational amplifier AR4 is connected with the base of a triode Q1, the emitter of a triode Q2 and one end of a resistor R5, the emitter of a triode Q1 is connected with the base of a triode Q2 and the non-inverting input end of an operational amplifier AR2, the inverting input end of the operational amplifier AR2 is connected with one end of a resistor R2, the collector of a triode Q2 is connected with a power supply +5V, the output end of an operational amplifier AR2 is connected with the other end of the inverting input end of a resistor R2 and an inverting input end of an operational amplifier AR2, the non-inverting input end of the operational amplifier AR5 is connected to the other end of the resistor R5, the output end of the operational amplifier AR4 is connected to one end of the resistor R6, the other end of the resistor R6 is connected to the non-inverting input end of the operational amplifier AR6, the output end of the operational amplifier AR6 is connected to the other end of the resistor R8, the output end of the operational amplifier AR5 is connected to the other end of the resistor R7, the inverting input end of the operational amplifier AR6 is connected to the positive electrode of the capacitor C1, one end of the resistor R10, the positive electrode of the diode D4 and the positive electrode of the diode D5, 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 R9, the other ends of the resistor R9 and the inductor L1 are grounded, the negative electrode of the diode D4 is connected to the power supply +5V, the negative electrode of the diode D5 is grounded, and the other end of the resistor R10 is connected to the signal transmitter E1.
In the second embodiment, on the basis of the first embodiment, the power acquisition module selects a power collector J1 with the model of YK-3D3 to acquire a power signal of the end node of the power communication, an operational amplifier AR1 is used to amplify the signal in phase, a power supply terminal of the power collector J1 is connected to +5V, a ground terminal of the power collector J1 is grounded, an output terminal of the power collector J1 is connected to one end of a resistor R1 and a negative electrode of a voltage regulator tube D1, a positive electrode of the voltage regulator tube D1 is grounded, the other end of the resistor R1 is connected to a non-inverting input terminal of the operational amplifier AR1, an inverting input terminal of the operational amplifier AR1 is connected to one ends of the resistor R2 and the resistor R3, the other end of the resistor R3 is grounded, and an output terminal of the operational amplifier AR1 is connected to the other end of the resistor R2 and the non-inverting input terminal of the operational amplifier AR 3.
When the invention is used in detail, the synchronous detection circuit for the electric power communication signals comprises a power acquisition module and a peak value difference module, wherein the power acquisition module acquires power signals of an end node of the electric power communication by using a power collector J1 with the model of YK-3D3, the peak value difference module selects peak value signals by using a peak value circuit consisting of an operational amplifier AR3, a diode D2 and a diode D3, can filter low potential interference signals and ensure the stability of the signals, a composite circuit consisting of a triode Q1 and a triode Q2 is used for detecting signal potential, the conduction voltage properties of the triode Q1 and the triode Q2 are used for adjusting the potential of the non-inverting input end of the operational amplifier AR2 and the potential of the inverting input end of the operational amplifier AR4, the operational amplifier AR2 plays a role of buffering signals, the operational amplifier AR4 plays a role of comparing signals, and for further differential adjustment preparation to ensure the accuracy of differential adjustment, then, a difference circuit formed by the operational amplifier AR5 and the operational amplifier AR6 is used for carrying out differential adjustment on output signals of the operational amplifier AR2 and the operational amplifier AR4, a signal static working point is stabilized, the stability and the accuracy of a power signal are guaranteed, finally, an inductor L1, a capacitor C1 and a capacitor C2 are used for filtering the signals, a limiting circuit formed by a diode D4 and a diode D5 is used for limiting the signals within 0- +5V, the trigger voltage exceeding the signal transmitter E1 is prevented, the trigger voltage is sent to a power communication node control terminal through a signal transmitter E1, synchronous trigger correction signals of the power communication node control terminal can directly correct synchronous signals on power line communication of the communication node control terminal through power signals of the power communication node.
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 (1)
1. A synchronous detection circuit for electric power communication signals comprises a power acquisition module and a peak difference module, wherein the power acquisition module acquires power signals of end nodes of electric power communication by using a power collector J1 with the model of YK-3D3, the peak difference module selects peak signals by using a peak circuit consisting of an operational amplifier AR3, a diode D2 and a diode D3, a composite circuit consisting of a triode Q1 and a triode Q2 detects signal potentials, the non-inverting input end of the operational amplifier AR2 and the inverting input end of the operational amplifier AR4 are adjusted, a differential circuit consisting of an operational amplifier AR5 and an operational amplifier AR6 is used for carrying out differential adjustment on signals output by the operational amplifier AR2 and the operational amplifier AR4, finally, an inductor L1, a capacitor C1 and a capacitor C2 are used for filtering the signals, and a circuit consisting of a diode D4 and a diode D5 is used for limiting the signals within 0- +5V amplitude limit, the signal is sent to a power communication node control terminal through a signal transmitter E1;
the peak value difference module comprises an operational amplifier AR3, wherein the non-inverting input end of an operational amplifier AR3 is connected with the anode of a diode D2 and one end of a capacitor C6, the inverting input end of an operational amplifier AR3 is grounded, the output end of an operational amplifier AR3 is connected with the cathode of a diode D2 and a diode D3 and the collector of a triode Q1, the other end of a capacitor C6, the anode of a diode D3 is connected with the non-inverting input end of an operational amplifier AR4, the inverting input end of the operational amplifier AR4 is connected with the base of a triode Q1, the emitter of a triode Q2 and one end of a resistor R5, the emitter of the triode Q5 is connected with the base of the triode Q5 and the non-inverting input end of the operational amplifier AR5, the inverting input end of the operational amplifier AR5 is connected with one end of the resistor R5, the other end of the output end of the resistor R5 and the inverting input end of the operational amplifier AR5, the non-inverting input end of the operational amplifier AR5 is connected with the other end of the resistor R5, the output end of the operational amplifier AR4 is connected with one end of the resistor R6, the other end of the resistor R6 is connected with the non-inverting input end of the operational amplifier AR6, the output end of the operational amplifier AR6 is connected with the other end of the resistor R8, the output end of the operational amplifier AR5 is connected with the other end of the resistor R7, the inverting input end of the operational amplifier AR6 is connected with the anode of the capacitor C1, one end of the resistor R10, the anode of the diode D4 and the anode of the diode D5, the cathode of the capacitor C1 is connected with the anode of the capacitor C2 and one end of the inductor L1, the cathode of the capacitor C2 is connected with one end of the resistor R9, the other ends of the resistor R9 and the inductor L1 are grounded, the cathode of the diode D4 is connected with the power supply +5V, the cathode of the diode D5 is grounded, and the other end of the resistor R10 is connected with the signal emitter E1;
the power acquisition module comprises a power collector J1 with the model number of YK-3D3, a power supply end of a power collector J1 is connected with +5V of a power supply, a grounding end of the power collector J1 is grounded, an output end of the power collector J1 is connected with one end of a resistor R1 and a negative electrode of a voltage regulator tube D1, a positive electrode of the voltage regulator tube D1 is grounded, the other end of the resistor R1 is connected with a non-inverting input end of an operational amplifier AR1, an inverting input end of the operational amplifier AR1 is connected with one end of the resistor R2 and one end of the resistor R3, the other end of the resistor R3 is grounded, and an output end of the operational amplifier AR1 is connected with the other end of the resistor R2 and the non-inverting input end of the operational amplifier AR 3.
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| CN202010132339.2A CN111157778B (en) | 2020-02-29 | 2020-02-29 | Electric power communication signal synchronous detection circuit |
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| CN202010132339.2A CN111157778B (en) | 2020-02-29 | 2020-02-29 | Electric power communication signal synchronous detection circuit |
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| CN111157778B true CN111157778B (en) | 2021-11-23 |
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