CN111665385B - Communication base station safety monitoring device - Google Patents
Communication base station safety monitoring device Download PDFInfo
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- CN111665385B CN111665385B CN202010503306.4A CN202010503306A CN111665385B CN 111665385 B CN111665385 B CN 111665385B CN 202010503306 A CN202010503306 A CN 202010503306A CN 111665385 B CN111665385 B CN 111665385B
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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
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2506—Arrangements for conditioning or analysing measured signals, e.g. for indicating peak values ; Details concerning sampling, digitizing or waveform capturing
- G01R19/2509—Details concerning sampling, digitizing or waveform capturing
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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
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/061—Details of electronic electricity meters
- G01R22/063—Details of electronic electricity meters related to remote communication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R22/00—Arrangements for measuring time integral of electric power or current, e.g. electricity meters
- G01R22/06—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods
- G01R22/10—Arrangements for measuring time integral of electric power or current, e.g. electricity meters by electronic methods using digital techniques
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B15/00—Suppression or limitation of noise or interference
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/03—Power distribution arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q1/00—Details of selecting apparatus or arrangements
- H04Q1/02—Constructional details
- H04Q1/11—Protection against environment
- H04Q1/116—Protection against environment lightning or EMI protection, e.g. shielding or grounding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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Abstract
The invention discloses a safety monitoring device for a communication base station, which comprises a power supply module, an electric energy acquisition module, a controller and a wireless module, wherein the power supply module is used for providing a stable +5V power supply, the electric energy acquisition module adopts a voltage sensor to detect a voltage signal on a power supply line of the communication base station power supply in real time, a signal amplification conditioning circuit effectively filters interference between a magnetic device inside the communication base station and an external electromagnetic clutter signal by using a band-pass filter principle, effectively eliminates bias voltage and ensures the accuracy of a detection signal amplification value; the anti-interference stabilizing circuit effectively eliminates interference when harmonic waves or voltage surges exist in a power supply line of a communication base station power supply, and improves the anti-interference performance of the monitoring device; the controller sends the electric energy detection data to the background monitoring server through the wireless module for monitoring management, so that accurate remote monitoring of the power performance of the communication base station is realized, and the controller has good reliability and maintainability.
Description
Technical Field
The invention relates to the technical field of communication base station monitoring, in particular to a communication base station safety monitoring device.
Background
With the rapid development of mobile communication, the number of communication base stations is increasing, the technical content and complexity of equipment are also increasing, and accordingly higher requirements are put forward on the stability and reliability of the power supply of the communication base stations. The communication power supply is an important component of communication network infrastructure, provides direct current (-48V or-24V) power supply for communication equipment of a base station, is mostly configured in an N +1 mode for improving the reliability of a power supply system, and can meet the communication requirement on the reliability of the power supply equipment under normal power grid and environmental conditions. However, when the power grid and environmental conditions are poor, communication interruption due to a power supply equipment failure may occur, and therefore, it is necessary to study the reliability of the base station communication power supply, failure diagnosis, and system monitoring technology.
At present, a sensor is mainly adopted to detect electric energy parameters such as voltage and current on a power supply line in the monitoring of a communication base station power supply, the running condition of a direct current remote supply system is monitored in real time, and early warning is timely carried out and output is cut off when a fault occurs. Because a large number of magnetic devices such as various transformers, reactors, resonant inductors and the like are used in the communication base station, the performance of the electric energy detection circuit is greatly influenced, and harmonic waves and surge noise waves generated by external electromagnetic interference, static electricity, thunder and lightning and the like can bring errors to a detection result, so that the reliability of the monitoring device is reduced, misdetection and misinformation are generated, and direct economic loss can be caused in severe cases.
The present invention provides a new solution to this problem.
Disclosure of Invention
In view of the above situation, an object of the present invention is to provide a communication base station security monitoring apparatus.
The technical scheme for solving the problem is as follows: a communication base station safety monitoring device comprises a power supply module, an electric energy acquisition module, a controller and a wireless module, wherein the power supply module is used for reducing the voltage of a direct current power supply in a communication base station, and then supplying a +5V power supply to the electric energy acquisition module, the controller and the wireless module after constant current and voltage stabilization; the electric energy acquisition module comprises a voltage detection circuit, a signal amplification conditioning circuit and an anti-interference stabilizing circuit, the voltage detection circuit comprises a voltage sensor for detecting electric energy of a base station, and a detection signal of the voltage sensor is sent to an operational amplifier U2 for primary amplification; the signal amplification conditioning circuit comprises an operational amplifier U3, a U3 and a U3, wherein the inverting input end of the operational amplifier U3 is connected with one end of a resistor R3 and one end of a capacitor C3, the other end of the capacitor C3 is connected with one end of the resistor R3 and one end of the capacitor C3, the output end of the operational amplifier U3 is connected with the output end of the operational amplifier U3 through the resistor R3, the other end of the resistor R3 is grounded, the other end of the capacitor C3 and the other end of the resistor R3 are connected with the output end of the operational amplifier U3, the output end of the operational amplifier U3 is sequentially fed into the inverting input end of the operational amplifier U3 and the drain of the MOS tube Q3 through a diode D3 and the R3, the output end of the operational amplifier U3 is connected with the gate of the MOS tube Q3, the source of the MOS tube Q3 is connected with the base of a triode T3 through the resistor R3, the non-inverting input ends of the operational amplifier U3 and the cathode 3 of the diode 3, the other end of the capacitor C7, the other end of the rheostat RP1, the sliding end and the anode of the zener diode DZ2 are grounded in parallel, the output end of the operational amplifier U3 is also connected with one end of a resistor R17 and one end of a capacitor C8, the other end of the resistor R17 is connected with the cathode of the zener diode DZ3 and the collector of the triode T2, the other end of the capacitor C8 and the anode of the zener diode DZ3 are grounded in parallel, and the emitter of the triode T2 is connected with the input end of the anti-interference circuit; the anti-jamming circuit carries out surge elimination on an output signal of the triode T2, then the output signal is sent into the MOS tube Q3 for stabilization processing, then the output signal is sent into the A/D converter after LC filtering, a voltage detection signal is converted into a digital quantity, and then the digital quantity is sent into the controller, and the controller sends electric energy detection data to the background monitoring server through the wireless module for monitoring management.
Preferably, the power supply module comprises a buck chip, an input end of the buck chip is connected with a direct current power supply interface inside the communication base station and one end of a capacitor Cp1, a ground end of the buck chip is grounded with the other end of the capacitor Cp1, an output end of the buck chip is connected with a non-inverting input end of the operational amplifier U1, the input end of the operational amplifier U1 is also connected with the drain of the MOS transistor Q1 through a resistor R1, the output end of the operational amplifier U1 is connected with one end of a capacitor C1 and the grid of the MOS transistor Q1 through a resistor R2, the other end of the capacitor C1 is grounded, the inverting input end of the operational amplifier U1 is connected with one ends of resistors R3 and R4 and the source of the MOS transistor Q1, the other end of the resistor R3 is grounded, the other end of the resistor R4 is connected with one end of a resistor R5 and the collector of the triode T1, the other end of the resistor R5 is connected with the base of the triode T1 and the cathode of the zener diode DZ1, and the emitter of the triode T1 is connected with one end of the capacitor C2 and the +5V power output end.
Preferably, the voltage sensor is a PTA-2000 voltage transformer, a pin 1 of the voltage sensor is connected to one end of a resistor R7 and a capacitor C3 through a resistor R6 and a non-inverting input end of an operational amplifier U2, a pin 2 of the voltage sensor is connected to the other end of the resistor R7 and the capacitor C3 and an inverting input end of the operational amplifier U2 and is grounded through a resistor R8, the inverting input end of the operational amplifier U2 is connected to an anode of a diode D1 through a resistor R9 and a capacitor C4 which are connected in parallel, and a cathode of the diode D1 is connected to an output end of the operational amplifier U2 through a resistor R10.
Preferably, the anti-interference stabilizing circuit comprises a capacitor C9, one end of a capacitor C9 is connected to the anode of the diode D3 and the emitter of the triode T2, the other end of a capacitor C9 is connected to one end of a resistor R18, the other end of a resistor R18 and the cathode of the diode D3 are connected to the cathode of the diode D4, the gate of the MOS transistor Q3, the anode of the zener diode DZ4 and one ends of resistors R19 and R20, the anode of the diode D4 and the other end of the resistor R20 are grounded, the other end of the resistor R19 and the cathode of the zener diode DZ4 are connected to the gate of the MOS transistor Q1, the drain of the MOS transistor Q1 is connected to one ends of an inductor L1 and a resistor R21, the other end of the inductor L1 is connected to one end of a capacitor C10 and the a/D converter, and the resistor R36.
Preferably, the wireless module is a GPRS module.
Preferably, the voltage reduction chip is a 7805 voltage reduction chip.
Through the technical scheme, the invention has the beneficial effects that:
1. the electric energy acquisition module adopts a voltage sensor to detect a voltage signal on a power supply line of a communication base station in real time, the detection signal is firstly sent to a transport amplifier U2 for primary amplification, so that null shift interference is effectively inhibited, and peak interference generated by static electricity, thunder and lightning and other factors is eliminated by using resistance-capacitance feedback compensation;
2. an operational amplifier U4 in the signal amplification conditioning circuit performs high-pass filtering on an output signal of an operational amplifier U2 by using a band-pass filter principle, effectively filters interference of a magnetic device inside a communication base station and an external electromagnetic clutter signal, an emitter follower formed by the operational amplifier U5 and an MOS transistor Q2 improves amplification efficiency, and meanwhile, the operational amplifier U3 provides voltage to the same-phase input ends of the operational amplifiers U4 and U5 by using a voltage follower principle to eliminate bias voltage, so that the accuracy of a detection signal amplification value is ensured;
3. the anti-interference stabilizing circuit carries out surge elimination on the output signal of the signal amplification conditioning circuit and then sends the output signal into the MOS tube Q3 for stabilization, and then the LC filter is used for carrying out filtering processing on the output signal of the MOS tube Q3, so that harmonic interference generated when the communication base station works is effectively inhibited, and the anti-interference performance of the monitoring device is improved.
Drawings
Fig. 1 is a schematic circuit diagram of a power supply module of the present invention.
Fig. 2 is a schematic circuit diagram of the electric energy collection module 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 of fig. 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 safety monitoring device for a communication base station comprises a power supply module, an electric energy acquisition module, a controller and a wireless module. The power supply module is used for reducing the voltage of a direct current power supply inside the communication base station, the direct current power supply is generally 12-24V power supply output, and then stable +5V power supply is provided for the electric energy acquisition module, the controller and the wireless module after constant current and voltage stabilization. The specific structure is as shown in fig. 1, the power supply module includes a buck chip, an input end of the buck chip is connected to a dc power supply interface inside the communication base station and one end of a capacitor Cp1, a ground end of the buck chip is grounded to the other end of the capacitor Cp1, an output end of the buck chip is connected to a non-inverting input end of an operational amplifier U1 and is grounded through a capacitor Cp2, the non-inverting input end of the operational amplifier U1 is further connected to a drain of a MOS transistor Q1 through a resistor R1, an output end of the operational amplifier 1 is connected to one end of a capacitor C1 and a gate of the MOS transistor Q1 through a resistor R2, the other end of the capacitor C1 is grounded, an inverting input end of the operational amplifier U1 is connected to one ends of resistors R3 and R4 and a source of the MOS transistor Q1, the other end of the resistor R5 is grounded, the other end of the resistor R4 is connected to one end of the resistor R5 and a collector of a triode T59, the emitter of the transistor T1 is connected to one end of the capacitor C2 and the +5V power supply output terminal Vout.
When the voltage reduction chip is used specifically, the voltage reduction chip is a 7805 three-terminal voltage-stabilizing IC voltage reduction chip and has functions of overvoltage protection, overcurrent protection and overheat protection, and Cp1 and Cp2 are filter capacitors of an input end and an output end respectively. 7805 the step-down chip converts the DC power supply in the communication base station into +5V voltage for output, and the error precision of the output voltage is +/-3%. In order to improve the stability of voltage output of the power supply module and ensure the working performance of the electric energy acquisition module, the operational amplifier U1 and the MOS tube Q1 form a current series negative feedback network to process the output voltage of the 7805 voltage reduction chip, and because the open loop gain of the operational amplifier U1 is large, the circuit forms deep negative feedback, so that the MOS tube Q1 outputs a constant current with small ripples, and the resistor R2 and the capacitor C1 form RC filtering between the operational amplifier U1 and the MOS tube Q1, thereby further improving the stability of current output. The output current of the MOS transistor Q1 is fed through a resistor R4 into a triode regulator formed by a resistor R5, a triode T1 and a zener diode DZ1 for voltage stabilization, thereby obtaining a stable +5V power output.
As shown in fig. 2, the electric energy collection module includes a voltage detection circuit, a signal amplification and conditioning circuit, and an anti-interference stabilizing circuit. The voltage detection circuit comprises a voltage sensor for detecting the electric energy of the base station, and a detection signal of the voltage sensor is sent to the operational amplifier U2 for primary amplification. The voltage sensor is a PTA-2000 voltage transformer, a pin 1 of the voltage sensor is connected with one end of a resistor R7 and a capacitor C3 and a non-inverting input end of an operational amplifier U2 through a resistor R6, a pin 2 of the voltage sensor is connected with a resistor R7, the other end of the capacitor C3 and an inverting input end of the operational amplifier U2 and is grounded through a resistor R8, the inverting input end of the operational amplifier U2 is connected with an anode of a diode D1 through a resistor R9 and a capacitor C4 which are connected in parallel, and a cathode of a diode D1 is connected with an output end of the operational amplifier U2 through a resistor R10. The detection signal of the voltage sensor is sent into an operational amplifier U2 in a differential mode for primary amplification, a capacitor C3 plays a role in signal stabilization at the input end of the operational amplifier U2 to effectively inhibit zero drift interference, a resistor R9 and a capacitor C4 play a role in signal feedback compensation in the amplification process of the operational amplifier U2, output oscillation occurs in power supply of a communication base station or spike interference occurs in output of the voltage sensor due to static electricity and the like to buffer signal amplification output, and meanwhile, a diode D1 plays a role in detection and amplification limiting, so that the stability of the waveform of the amplified output signal of the operational amplifier U2 is ensured.
The output signal of the operational amplifier U2 is sent to a signal amplification conditioning circuit for secondary amplification and filtering regulation. The signal amplification conditioning circuit comprises an operational amplifier U3, a U3 and a U3, wherein the inverting input end of the operational amplifier U3 is connected with one end of a resistor R3 and one end of a capacitor C3, the other end of the capacitor C3 is connected with one end of the resistor R3 and one end of the capacitor C3, the output end of the operational amplifier U3 is connected with the output end of the operational amplifier U3 through the resistor R3, the other end of the resistor R3 is grounded, the other end of the capacitor C3 and the other end of the resistor R3 are connected with the output end of the operational amplifier U3, the output end of the operational amplifier U3 is sequentially fed into the inverting input end of the operational amplifier U3 and the drain of the MOS tube Q3 through a diode D3 and the R3, the output end of the operational amplifier U3 is connected with the gate of the MOS tube Q3, the source of the MOS tube Q3 is connected with the base of a triode T3 through the resistor R3, the non-inverting input ends of the operational amplifier U3 and the cathode of the diode 3, the power supply circuit is connected with the output end of the power supply module through a resistor Rs, the other end of a capacitor C7, the other end of a rheostat RP1, a sliding end and the anode of a voltage stabilizing diode DZ2 are grounded in parallel, the output end of an operational amplifier U3 is also connected with one end of a resistor R17 and one end of a capacitor C8, the other end of a resistor R17 is connected with the cathode of a voltage stabilizing diode DZ3 and the collector of a triode T2, the other end of a capacitor C8 and the anode of the voltage stabilizing diode DZ3 are grounded in parallel, and the emitter of a triode T2 is connected with. The resistors R11 and R12 and the capacitors C5 and C6 form a second-order band-pass filter in the amplification process of the operational amplifier U4, and the frequency band center frequency of the second-order band-pass filter is consistent with the frequency of a detection signal, so that interference between a magnetic device inside the communication base station and an external electromagnetic clutter signal is effectively filtered. Then the output signal of the operational amplifier U4 is sent to an emitter follower formed by the operational amplifier U5 and a MOS transistor Q2 for rapid amplification and stabilization, and the amplification efficiency is improved. Meanwhile, bias voltage elimination circuits are arranged at the non-inverting input ends of the operational amplifiers U4 and U5, wherein a resistor Rs and a rheostat RP1 divide the voltage of a +5V power supply output by the power supply module by using a resistor voltage division principle, the resistance value of the rheostat RP1 can be adjusted to change the voltage value in the operational amplifier U3 at the input end, and the specific adjustment value is determined according to a system operational amplifier bias calculation value. The voltage stabilizing diode DZ2 and the capacitor C7 play a role in stabilizing and filtering the voltage value, and then the operational amplifier U3 sends the voltage value to the non-inverting input ends of the operational amplifier U4 and U5 by using a voltage follower principle, so that the input offset voltage of the operational amplifier is offset, the offset voltage is eliminated, and the accuracy of the amplification value of the detection signal is ensured.
Meanwhile, the output voltage of the operational amplifier U3 is filtered by a capacitor C8 and stabilized by the amplitude of a voltage stabilizing diode DZ3 to be used as the conducting voltage of the collector of the triode T2, the output signal of the MOS transistor Q2 is sent to the base of the triode T2, and the triode T2 sends the amplified detection signal to the anti-interference stabilizing circuit for further processing by utilizing the common collector amplification principle. The anti-interference stabilizing circuit carries out surge elimination on an output signal of the triode T2, then sends the output signal into the MOS tube Q3 for stabilizing, then sends the output signal into the A/D converter after LC filtering, converts a voltage detection signal into a digital quantity and then sends the digital quantity into the controller, and the controller sends electric energy detection data to the background monitoring server through the wireless module for monitoring and management. The specific structure of the anti-interference stabilizing circuit comprises a capacitor C9, one end of a capacitor C9 is connected with the anode of a diode D3 and the emitter of a triode T2, the other end of a capacitor C9 is connected with one end of a resistor R18, the other end of a resistor R18 and the cathode of a diode D3 are connected with the cathode of a diode D4, the gate of a MOS transistor Q3, the anode of a zener diode DZ4 and one ends of resistors R19 and R20, the anode of a diode D4 and the other end of a resistor R20 are grounded, the other end of a resistor R19 and the cathode of a zener diode DZ4 are connected with the gate of a MOS transistor Q1, the drain of a MOS transistor Q1 is connected with one end of an inductor L1 and a resistor R21, the other end of an inductor L1 is connected with one end of a capacitor C10 and the A/D converter, and a.
When harmonic or voltage surge interference exists in a power supply line of a communication base station power supply, an output signal of the triode T2 is sent into the capacitor C9 and the resistor R18 to perform RC buffering, meanwhile, the D3 and the D4 are used as fast recovery diodes, the Tf value is very small and is usually 30ns, therefore, the fast recovery diodes have good restraining and stabilizing effects on surge voltage, and then the fast recovery diodes are sent into the MOS tube Q3 to perform voltage amplitude stabilization. The inductor L1 and the capacitor C10 form an LC filter for filtering the output signal of the MOS transistor Q3, harmonic interference generated when the communication base station works is effectively inhibited, and the anti-interference performance of the monitoring device is improved.
When the device is used specifically, the electric energy acquisition module adopts the voltage sensor to detect the voltage signal on the power supply circuit of the communication base station power supply in real time, the detection signal is firstly sent to the operational amplifier U2 for primary amplification, so that null shift interference is effectively inhibited, and peak interference generated by static electricity, thunder and lightning and other factors is eliminated by using resistance-capacitance feedback compensation. The operational amplifier U4 in the signal amplification conditioning circuit utilizes a band-pass filter principle to carry out high-pass filtering on an output signal of the operational amplifier U2, interference between a magnetic device inside a communication base station and an external electromagnetic clutter signal is effectively filtered, an emitter follower formed by the operational amplifier U5 and an MOS transistor Q2 improves amplification efficiency, meanwhile, the operational amplifier U3 utilizes a voltage follower principle to provide voltage to the same-phase input ends of the operational amplifier U4 and the operational amplifier U5 to eliminate bias voltage, and the accuracy of a detection signal amplification value is guaranteed. The anti-interference stabilizing circuit carries out surge elimination on an output signal of the signal amplification conditioning circuit, then sends the output signal into the MOS tube Q3 for stabilization, then sends the output signal into the A/D converter after LC filtering, converts a voltage detection signal into a digital quantity and then sends the digital quantity into the controller. When the current sensor is specifically arranged, the current sensor can be arranged to detect a current signal on a power supply circuit of the communication base station, and the structure and the principle of a detection signal processing circuit are the same as those described above. The controller collects voltage signals and current signals of a power supply of the communication base station and processes internal data, and sends monitoring data to the background monitoring server through the wireless module, and the wireless module can adopt a GPRS module. The background monitoring server performs centralized management on each communication base station, realizes remote monitoring and real-time inquiry of electric energy data, thereby realizing accurate remote monitoring of the power supply performance of the communication base stations and having good reliability and maintainability.
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 (6)
1. The utility model provides a communication base station safety monitoring device, includes power module, electric energy collection module, controller and wireless module, its characterized in that: the power supply module is used for reducing the voltage of a direct current power supply in the communication base station, and then supplying a +5V power supply to the electric energy acquisition module, the controller and the wireless module after constant current and voltage stabilization;
the electric energy acquisition module comprises a voltage detection circuit, a signal amplification conditioning circuit and an anti-interference stabilizing circuit, the voltage detection circuit comprises a voltage sensor for detecting electric energy of a base station, and a detection signal of the voltage sensor is sent to an operational amplifier U2 for primary amplification; the signal amplification conditioning circuit comprises an operational amplifier U3, a U3 and a U3, wherein the inverting input end of the operational amplifier U3 is connected with one end of a resistor R3 and one end of a capacitor C3, the other end of the capacitor C3 is connected with one end of the resistor R3 and one end of the capacitor C3, the output end of the operational amplifier U3 is connected with the output end of the operational amplifier U3 through the resistor R3, the other end of the resistor R3 is grounded, the other end of the capacitor C3 and the other end of the resistor R3 are connected with the output end of the operational amplifier U3, the output end of the operational amplifier U3 is sequentially fed into the inverting input end of the operational amplifier U3 and the drain of the MOS tube Q3 through a diode D3 and the R3, the output end of the operational amplifier U3 is connected with the gate of the MOS tube Q3, the source of the MOS tube Q3 is connected with the base of a triode T3 through the resistor R3, the non-inverting input ends of the operational amplifier U3 and the cathode 3 of the diode 3, the other end of the capacitor C7, the other end of the rheostat RP1, the sliding end and the anode of the zener diode DZ2 are grounded in parallel, the output end of the operational amplifier U3 is also connected with one end of a resistor R17 and one end of a capacitor C8, the other end of the resistor R17 is connected with the cathode of the zener diode DZ3 and the collector of the triode T2, the other end of the capacitor C8 and the anode of the zener diode DZ3 are grounded in parallel, and the emitter of the triode T2 is connected with the input end of the anti-interference stabilizing circuit; the anti-interference stabilizing circuit carries out surge elimination on an output signal of the triode T2, then sends the output signal into the MOS tube Q3 for stabilizing, then sends the output signal into the A/D converter after LC filtering, converts a voltage detection signal into a digital quantity and then sends the digital quantity into the controller, and the controller sends electric energy detection data to the background monitoring server through the wireless module for monitoring and management.
2. The communication base station safety monitoring device according to claim 1, wherein: the power supply module comprises a voltage reduction chip, the input end of the voltage reduction chip is connected with a direct current power supply interface inside the communication base station and one end of a capacitor Cp1, the grounding end of the voltage reduction chip is grounded with the other end of the capacitor Cp1, the output end of the voltage reduction chip is connected with the non-inverting input end of an operational amplifier U1, the input end of the operational amplifier U1 is also connected with the drain of the MOS transistor Q1 through a resistor R1, the output end of the operational amplifier U1 is connected with one end of a capacitor C1 and the grid of the MOS transistor Q1 through a resistor R2, the other end of the capacitor C1 is grounded, the inverting input end of the operational amplifier U1 is connected with one ends of resistors R3 and R4 and the source of the MOS transistor Q1, the other end of the resistor R3 is grounded, the other end of the resistor R4 is connected with one end of a resistor R5 and the collector of the triode T1, the other end of the resistor R5 is connected with the base of the triode T1 and the cathode of the zener diode DZ1, and the emitter of the triode T1 is connected with one end of the capacitor C2 and the +5V power output end.
3. The communication base station safety monitoring device according to claim 1 or 2, wherein: the voltage sensor is a PTA-2000 voltage transformer, pin 1 of the voltage sensor is connected with one end of a resistor R7 and a capacitor C3 through a resistor R6 and the non-inverting input end of an operational amplifier U2, pin 2 of the voltage sensor is connected with the other end of the resistor R7 and the capacitor C3 and the inverting input end of the operational amplifier U2 and is grounded through a resistor R8, the inverting input end of the operational amplifier U2 is connected with the anode of a diode D1 through a resistor R9 and a capacitor C4 which are connected in parallel, and the cathode of the diode D1 is connected with the output end of the operational amplifier U2 through a resistor R10.
4. The communication base station safety monitoring device according to claim 3, wherein: the anti-interference stabilizing circuit comprises a capacitor C9, one end of a capacitor C9 is connected with the anode of a diode D3 and the emitter of a triode T2, the other end of a capacitor C9 is connected with one end of a resistor R18, the other end of a resistor R18 and the cathode of a diode D3 are connected with the cathode of a diode D4, the grid of a MOS tube Q3, the anode of a voltage stabilizing diode DZ4 and one ends of resistors R19 and R20, the anode of a diode D4 and the other end of a resistor R20 are grounded, the other end of a resistor R19 and the cathode of a voltage stabilizing diode DZ4 are connected with the grid of a MOS tube Q3, the drain of a MOS tube Q3 is connected with one ends of an inductor L1 and a resistor R21, the other end of an inductor L1 is connected with one end of a capacitor C10 and the A/D converter, and the.
5. The communication base station safety monitoring device according to claim 1, wherein: the wireless module adopts a GPRS module.
6. The communication base station safety monitoring device according to claim 1, wherein: the voltage reduction chip is 7805.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010503306.4A CN111665385B (en) | 2020-06-05 | 2020-06-05 | Communication base station safety monitoring device |
Applications Claiming Priority (1)
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| CN118449623B (en) * | 2024-07-08 | 2024-10-15 | 国网甘肃省电力公司庆阳供电公司 | 5G power distribution wireless communication anti-interference method |
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| CN106550518B (en) * | 2015-09-21 | 2019-08-30 | 通嘉科技股份有限公司 | Ripple suppressor |
| CN205049650U (en) * | 2015-10-12 | 2016-02-24 | 珠海格力电器股份有限公司 | Voltage sampling circuit and system |
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