CN210469339U - Multi-channel signal calibration system - Google Patents
Multi-channel signal calibration system Download PDFInfo
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- CN210469339U CN210469339U CN201922463545.7U CN201922463545U CN210469339U CN 210469339 U CN210469339 U CN 210469339U CN 201922463545 U CN201922463545 U CN 201922463545U CN 210469339 U CN210469339 U CN 210469339U
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Abstract
The utility model discloses a multichannel signal calibration system, including signal receiving circuit, power compensation circuit, frequency compensation circuit, phase adjustment circuit and controller, signal receiving circuit includes fortune ware AR1, fortune ware AR 1's homophase input end connects the communication signal input, fortune ware AR 1's inverting input end, the output loops through resistance R1, electric capacity C3 connects the input of phase adjustment circuit, the main control unit is connected to the output of phase adjustment circuit, power compensation circuit and frequency compensation circuit all set up the both ends at resistance R1, and power compensation circuit and frequency compensation circuit's control end all connect the main control unit, the utility model discloses collect power, frequency, phase adjustment are as an organic whole, utilize PWM automatic control technique and signal characteristic extraction analysis technique to accomplish the comprehensive compensation to communication signal, effectively avoid the error influence that mutual interference between the communication signal brought, the signal receiving is more accurate and stable.
Description
Technical Field
The utility model relates to a signal calibration technical field especially relates to a multichannel signal calibration system.
Background
With the continuous development of wireless communication technology, mobile telecommunications gradually evolved into higher data throughput and wider frequency range. Because the signals of the communication equipment are transmitted based on the wireless network, when the frequency difference of various electronic equipment is not large, the signals are easy to interfere with each other, even if the design principle and the hardware structure of each signal receiving channel are completely the same, in practical application, when the same signal is received through each signal receiving channel, the actual gain and the phase of the received signal are usually different, so that the accuracy of finally obtained signal receiving is greatly influenced, and the signal transmission of an electronic communication system has errors. In view of the above, there is a need for an intelligent signal calibration system that integrates power, frequency, and phase adjustments.
So the utility model provides a new scheme to solve the problem.
SUMMERY OF THE UTILITY MODEL
In view of the above situation, in order to overcome the drawbacks of the prior art, the present invention provides a multi-path signal calibration system.
The technical scheme for solving the problem is as follows: a multi-channel signal calibration system comprises a signal receiving circuit, a power compensation circuit, a frequency compensation circuit, a phase adjustment circuit and a controller, wherein the signal receiving circuit comprises an operational amplifier AR1, the in-phase input end of the operational amplifier AR1 is connected with the communication signal input end, the anti-phase input end and the output end of the operational amplifier AR1 are sequentially connected with the input end of the phase adjustment circuit through a resistor R1 and a capacitor C3, the output end of the phase adjustment circuit is connected with a main controller, the power compensation circuit and the frequency compensation circuit are both arranged at two ends of a resistor R1, and the control ends of the power compensation circuit and the frequency compensation circuit are both connected with the main controller.
Preferably, the phase adjusting circuit includes an operational amplifier AR2, a non-inverting input terminal of the operational amplifier AR2 is connected to the input terminal of the signal receiving circuit and is grounded through a resistor R5, an inverting input terminal of the operational amplifier AR2 is connected to an output terminal of the operational amplifier AR2 through a capacitor C5, and an output terminal of the operational amplifier AR2 is connected to the input terminal of the main controller through a resistor R6 and is grounded through a capacitor C6.
Preferably, the power compensation circuit comprises a transistor Q1, a collector of the transistor Q1 is connected with an output end of the operational amplifier AR1 and one ends of the resistors R1 and R2, an emitter of the transistor Q1 is connected with the other end of the resistor R1, one end of the resistor R3 and a first output end of the main controller, and a base of the transistor Q1 is connected with the other ends of the resistors R2 and R3.
Preferably, the frequency compensation circuit includes a transistor Q2, a base of the transistor Q2 is connected to one end of a capacitor C4 and a second output end of the main controller through a resistor R4, an emitter of the transistor Q2 and the other end of the capacitor C4 are grounded, a collector of the transistor Q2 is connected to one ends of the capacitors C1 and C2 and an inductor L1, the other end of the capacitor C1 is connected to one end of a resistor R1, and the other ends of the capacitor C2 and the inductor L1 are connected to the other end of the resistor R1.
Through the technical scheme, the beneficial effects of the utility model are that: the utility model discloses collect power, frequency, phase adjustment as an organic whole, utilize PWM automatic control technique and signal characteristic to draw the comprehensive compensation of analysis technique completion to communication signal, effectively avoid the error influence that the interference of each other brought between the communication signal, make signal reception more accurate stable.
Drawings
Fig. 1 is a schematic diagram of the connection of the signal receiving circuit, the power compensation circuit and the frequency compensation circuit of the present invention.
Fig. 2 is a schematic diagram of the phase adjusting circuit of the present invention.
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 1 to 2. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
A multi-channel signal calibration system comprises a signal receiving circuit, a power compensation circuit, a frequency compensation circuit, a phase adjusting circuit and a controller. As shown in fig. 1, the signal receiving circuit includes an operational amplifier AR1, a non-inverting input terminal of the operational amplifier AR1 is connected to the communication signal input terminal, an inverting input terminal and an output terminal of the operational amplifier AR1 are connected to an input terminal of the phase adjusting circuit through a resistor R1 and a capacitor C3 in sequence, an output terminal of the phase adjusting circuit is connected to the main controller, the power compensating circuit and the frequency compensating circuit are both disposed at two ends of the resistor R1, and control terminals of the power compensating circuit and the frequency compensating circuit are both connected to the main controller.
The signal receiving circuit is used for receiving the communication signals output by the antenna, and the operational amplifier AR1 utilizes the voltage follower principle to isolate and output the communication signals, so that the stability of signal receiving is ensured. Then, the output signal of the operational amplifier AR1 is isolated by the capacitor C3 and sent to the phase adjustment circuit for processing.
As shown in fig. 2, the phase adjustment circuit includes an operational amplifier AR2, a non-inverting input terminal of the operational amplifier AR2 is connected to the input terminal of the signal receiving circuit and is grounded through a resistor R5, an inverting input terminal of the operational amplifier AR2 is connected to an output terminal of the operational amplifier AR2 through a capacitor C5, and an output terminal of the operational amplifier AR2 is connected to the input terminal of the main controller through a resistor R6 and is grounded through a capacitor C6. Wherein. The capacitor C5 plays a role in phase compensation in the processing process of the operational amplifier AR2, thereby effectively preventing communication signal imbalance and improving the stability of transmission. The output signal of the operational amplifier AR2 is filtered and denoised by an RC formed by a resistor R6 and a capacitor C6, and then sent to the main controller MCU for analysis.
The main controller utilizes the existing mature signal characteristic extraction and analysis technology to identify and compare the received communication signals. When the strength of the received communication signal does not meet the system requirement, the main controller controls the power compensation circuit to perform power enhancement on the output signal of the operational amplifier AR1 by using the existing PWM control technology. The power compensation circuit comprises a triode Q1, the collector of a triode Q1 is connected with the output end of an operational amplifier AR1 and one ends of resistors R1 and R2, the emitter of a triode Q1 is connected with the other end of a resistor R1, one end of a resistor R3 and a first output end P1 of the main controller, and the base of a triode Q1 is connected with the other ends of the resistors R2 and R3. When the first output end P1 is applied with voltage by PWM control, the transistor Q1 is electrically conducted, and the output signal of the operational amplifier AR1 is power-amplified by using the principle of transistor amplification, so as to compensate for the loss power.
When the frequency of the received communication signal is interfered or lost, the main controller controls the power compensation circuit to perform frequency compensation on the output signal of the operational amplifier AR1 by using a PWM control technique. The frequency compensation circuit comprises a triode Q2, the base electrode of a triode Q2 is connected with one end of a capacitor C4 and the second output end of a main controller through a resistor R4, the emitter electrode of the triode Q2 is grounded with the other end of a capacitor C4, the collector electrode of a triode Q2 is connected with one ends of capacitors C1, C2 and an inductor L1, the other end of the capacitor C1 is connected with one end of a resistor R1, and the other ends of the capacitor C2 and the inductor L1 are connected with the other end of a resistor R1. When the second output terminal P2 is turned on, the transistor Q2 is turned on, so that the capacitors C1 and C2 and the inductor L1 form LC parallel resonance to compensate the output signal of the operational amplifier AR1, and finally, the frequency calibration of the communication signal is completed.
To sum up, the utility model discloses collect power, frequency, phase adjustment as an organic whole, utilize PWM automatic control technique and signal characteristic to draw the comprehensive compensation of analytical technique completion to communication signal, effectively avoid the error influence that mutual interference brought between the communication signal, make signal reception more accurate stable.
The above description is provided for further details of the present invention with reference to the specific embodiments, which should not be construed as limiting the present invention; to the utility model discloses affiliated and relevant technical field's technical personnel are based on the utility model discloses under the technical scheme thinking prerequisite, the extension of doing and the replacement of operating method, data all should fall within the utility model discloses within the protection scope.
Claims (4)
1. A multi-channel signal calibration system comprises a signal receiving circuit, a power compensation circuit, a frequency compensation circuit, a phase adjusting circuit and a controller, and is characterized in that: the signal receiving circuit comprises an operational amplifier AR1, the in-phase input end of the operational amplifier AR1 is connected with the communication signal input end, the inverting input end and the output end of the operational amplifier AR1 are sequentially connected with the input end of the phase adjusting circuit through a resistor R1 and a capacitor C3, the output end of the phase adjusting circuit is connected with a main controller, the power compensating circuit and the frequency compensating circuit are both arranged at two ends of a resistor R1, and the control ends of the power compensating circuit and the frequency compensating circuit are both connected with the main controller.
2. The multi-signal calibration system of claim 1, wherein: the phase adjusting circuit comprises an operational amplifier AR2, wherein the non-inverting input terminal of the operational amplifier AR2 is connected with the input terminal of the signal receiving circuit and is grounded through a resistor R5, the inverting input terminal of the operational amplifier AR2 is connected with the output terminal of the operational amplifier AR2 through a capacitor C5, and the output terminal of the operational amplifier AR2 is connected with the input terminal of the main controller through a resistor R6 and is grounded through a capacitor C6.
3. The multi-signal calibration system of claim 2, wherein: the power compensation circuit comprises a triode Q1, the collector of the triode Q1 is connected with the output end of an operational amplifier AR1 and one ends of resistors R1 and R2, the emitter of the triode Q1 is connected with the other end of a resistor R1, one end of a resistor R3 and the first output end of the main controller, and the base of the triode Q1 is connected with the other ends of resistors R2 and R3.
4. The multi-signal calibration system of claim 2, wherein: the frequency compensation circuit comprises a triode Q2, the base electrode of a triode Q2 is connected with one end of a capacitor C4 and the second output end of a main controller through a resistor R4, the emitter electrode of the triode Q2 is grounded with the other end of a capacitor C4, the collector electrode of a triode Q2 is connected with one ends of capacitors C1, C2 and an inductor L1, the other end of the capacitor C1 is connected with one end of a resistor R1, and the other ends of the capacitor C2 and the inductor L1 are connected with the other end of a resistor R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922463545.7U CN210469339U (en) | 2019-12-31 | 2019-12-31 | Multi-channel signal calibration system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922463545.7U CN210469339U (en) | 2019-12-31 | 2019-12-31 | Multi-channel signal calibration system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210469339U true CN210469339U (en) | 2020-05-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922463545.7U Expired - Fee Related CN210469339U (en) | 2019-12-31 | 2019-12-31 | Multi-channel signal calibration system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210469339U (en) |
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2019
- 2019-12-31 CN CN201922463545.7U patent/CN210469339U/en not_active Expired - Fee Related
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200505 |