CN112234589A - Surge protection circuit and protection method for mobile base station of Internet of things - Google Patents
Surge protection circuit and protection method for mobile base station of Internet of things Download PDFInfo
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- CN112234589A CN112234589A CN202010867150.8A CN202010867150A CN112234589A CN 112234589 A CN112234589 A CN 112234589A CN 202010867150 A CN202010867150 A CN 202010867150A CN 112234589 A CN112234589 A CN 112234589A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
- H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
- H02H9/045—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage adapted to a particular application and not provided for elsewhere
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Abstract
The invention discloses a surge protection circuit and a surge protection method for an Internet of things mobile base station, and belongs to the field of Internet of things mobile base stations; a surge protection circuit and a protection method for an Internet of things mobile base station comprise the following steps: the device comprises a signal transmitting unit, a signal receiving unit, a data control unit, a data storage unit and an interface unit; the interface unit includes: the device comprises a signal isolation module, a signal modulation module and an amplitude limiting and filtering module; the invention transfers the user signal to the data control unit through the interface when receiving the user signal through the receiver, and outputs the signal to the transmitter through the interface unit when outputting and transmitting the signal, thus increasing the conversion time and buffer memory of the signal, and stabilizing the signal better, so as to stably transmit in the environment with strong interference of thunderstorm signals, and when transmitting the signal, each transmitting set will increase a period of time delay, and the sub-signals in each transmitting set will be isolated, thereby achieving mutual noninterference between the signals.
Description
Technical Field
The invention discloses a surge protection circuit and a surge protection method for an Internet of things mobile base station, and belongs to the field of Internet of things mobile base stations.
Background
A surge protection circuit and a surge protection method for a mobile base station of the Internet of things are used for a base station, namely a public mobile communication base station, and refer to a radio transceiver station which performs information transmission with a mobile phone terminal through a mobile communication switching center in a certain radio coverage area. The construction of mobile communication base stations is an important part of the investment of mobile communication operators in China, and the construction of the mobile communication base stations is generally carried out around the factors of coverage, call quality, investment benefit, difficult construction, convenient maintenance and the like. With the development of mobile communication network services toward datamation and packetization, the development trend of mobile communication base stations is also inevitably to make the mobile communication base stations broadband, large coverage area construction and IP.
The mobile base station in the prior art has a large workload, but when weather is thunderstorm, thunder and rain can greatly affect the transmission efficiency and stability of signals, and meanwhile, because of thunderstorm, lightning stroke can not be avoided.
Disclosure of Invention
The purpose of the invention is as follows: the surge protection circuit and the surge protection method for the mobile base station of the Internet of things are provided to solve the problems.
The technical scheme is as follows: a surge protection circuit and a protection method for an Internet of things mobile base station comprise the following steps:
a signal transmitting unit for sending wireless signal instruction when a user is in the working range of a mobile base station, matching by the mobile base station, and finally transmitting data signal to the general base station by the transmitter
The signal receiving unit is used for sending a wireless signal instruction when a user is in the working range of a mobile base station, and the mobile base station receives a wireless signal sent by the user and receives a matching signal sent by a total base pole;
the data control unit is used for converting, stabilizing and conditioning the received wireless signals so as to output stable wireless signals;
the data storage unit is used for storing the received wireless signals, so that the matching speed is improved without the next signal matching;
and the interface unit is used for connecting the transmitter in the signal transmitting unit and the receiver in the signal transmitting unit to be connected with the data control unit and stably transmitting the data signals.
In one embodiment, the interface unit includes: the device comprises a signal isolation module, a signal modulation module and an amplitude limiting and filtering module;
wherein the signal isolation module comprises: the circuit comprises a diode D1, a voltage regulator tube D2, a capacitor C1, a capacitor C2, a capacitor C3, an adjustable resistor RV1, an adjustable resistor RV3, an adjustable resistor RV2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a photoelectric coupler U4, a photoelectric coupler U5, an amplifier U1A, an amplifier U2A and an amplifier U3A;
a signal is input to the positive electrode of the voltage regulator tube D2, the negative electrode of the voltage regulator tube D2 is simultaneously connected with one end of the capacitor C2, the positive electrode of the diode D1 and the pin No. 2 of the amplifier U1A, the pin No. 3 of the amplifier U1A is connected with one end of the capacitor C1, the other end of the capacitor C1 is connected with the control end of the adjustable resistor RV2, one end of the adjustable resistor RV2 is connected with one end of the capacitor C3, the other end of the adjustable resistor RV2 is connected with one end of the resistor R5, the pin No. 4 of the amplifier U1A is simultaneously connected with the other end of the resistor R5 and the pin No. 4 of the photocoupler U5 and inputs a voltage, the pin No. 3 of the photocoupler U5 is simultaneously connected with the other end of the capacitor C3 and the other end of the capacitor C2, the pin No. 1 of the amplifier U1A is simultaneously connected with the negative electrode of the diode D6342, one end of the resistor R4 and the pin No. 2 of the photocoupler U4, the No. 8 pin of the amplifier U1A inputs voltage, the No. 1 pin of the photocoupler 5 is connected with the other end of the resistor R4, the No. 2 pin of the photocoupler U4 is connected with one end of the resistor R3, the other end of the resistor R3 is grounded, the No. 4 pin of the photocoupler U4 inputs voltage, the No. 3 pin of the photocoupler U4 is simultaneously connected with one end of the resistor R2, the No. 2 pin of the amplifier U2A and one end of the resistor R1, the No. 2 pin of the photocoupler U5 has a control end and one end of the adjustable resistor RV3 connected, the other end of the resistor R2 is simultaneously connected with the other end of the adjustable resistor RV3 and one end of the adjustable resistor RV1, the No. 3 pin of the amplifier U2A is connected with the control end of the adjustable resistor RV1, the other end of the adjustable resistor RV1 inputs voltage, the No. 1 pin of the amplifier U2A is simultaneously connected with the other end of the resistor R1 and one end of the amplifier U3 pin 3A Pin connection, pin 2 and pin 1 of the amplifier U3A are connected and output signals.
In one embodiment, the signal modulation module comprises: a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a resistor R17, a resistor R16, an adjustable resistor RV4, a voltage stabilizing D11, a resistor R21, a resistor R20, a resistor R21, a capacitor C11, a resistor R19, a resistor R18, a capacitor C14, a capacitor C12, a capacitor C13, an oscillator U11 and a demodulator/modulator U10;
pin No. 1 of the oscillator U11 is connected to one end of the capacitor C7, pin No. 1 of the capacitor C7 inputs a signal and is simultaneously connected to one end of the resistor 17 and pin No. 3 of the demodulator/modulator U10, pin No. 2 of the oscillator U11 is connected to one end of the capacitor C8, pin No. 4 of the oscillator U11 is simultaneously connected to the other end of the capacitor C8 and one end of the capacitor C9 and is grounded, the other end of the capacitor C9 is connected to pin No. 9 of the oscillator U11, pin No. 5 of the oscillator U11 is connected to one end of the capacitor C10, pin No. 1 of the demodulator/modulator U10 is simultaneously connected to the other end of the capacitor C10 and one end of the resistor R20, pin No. 2 of the demodulator/modulator U10 is simultaneously connected to the other end of the resistor R20, one end of the capacitor C11, one end of the resistor 46r 27 and one end of the resistor 46r 45, the other end of the capacitor C11 is connected with the other end of the resistor R22 and grounded, the pin 5 of the demodulator/modulator U10 is connected with one end of the resistor R16 and the negative electrode of the voltage regulator tube D11 at the same time, the other end of the resistor R16 is connected with one end of the adjustable resistor RV4, the positive electrode of the voltage regulator tube D11 is grounded, the other end of the resistor R17 is connected with the other end of the adjustable resistor RV4, the pin 14 of the demodulator/modulator U10 is connected with the control end of the adjustable resistor RV4 and voltage is input, the pin 11 of the demodulator/modulator U10 is connected with one end of the resistor R18, the other end of the resistor R18 is grounded, the pin 13 of the demodulator/modulator U10 is connected with one end of the resistor R19, the pin 6 of the demodulator/modulator U10 is connected with the other end of the resistor R19, and the pin 7 of the demodulator/modulator U10 is connected with one end of the capacitor C12, the No. 10 pin of the demodulator/modulator U10 is simultaneously connected with one end of the capacitor C14 and one end of the capacitor C13 and outputs a signal, the other end of the capacitor C14 is grounded, and the other end of the resistor R21 is simultaneously connected with the No. 8 pin of the oscillator U11, the other end of the capacitor C12 and the other end of the capacitor C13 and inputs a voltage.
In one embodiment, the clipping filtering module includes: a resistor R9, a resistor R10, a resistor R11, a triode Q1, a triode Q2, a triode Q3, a capacitor C4, a capacitor C5, a resistor R12, a capacitor C6, an inductor L1, a diode D8, a diode D9, an amplifier U8A, an amplifier U9A, a resistor R13, a resistor R14, a resistor R15, a diode D10, a voltage regulator D3, a diode D4, a diode D5, an amplifier U6A, a resistor R6, a resistor R7, a resistor R8, an amplifier U7A, a diode D6 and a diode D7;
a signal is input to one end of the resistor R9, a base of the transistor Q1 is connected to the other end of the resistor R9 and one end of the resistor R10 at the same time, a collector of the transistor Q1 is connected to one end of the resistor R11, an emitter of the transistor Q1 is connected to one end of the resistor R12 and a collector of the transistor Q2 at the same time, the other end of the resistor R12 is grounded, the other end of the resistor R11 is connected to the other end of the resistor R10, a base of the transistor Q2 and a collector of the transistor Q3 at the same time, an emitter of the transistor Q2 is connected to one end of the capacitor C4, the other end of the capacitor C4 is connected to one end of the capacitor C5 and one end of the capacitor C6 at the same time, a base of the transistor Q3 is connected to the other end of the capacitor C5 and one end of the inductor L1 at the same time, the other end of the capacitor C6 and the other end of the inductor, an emitter of the triode Q3 is simultaneously connected with an anode of the diode D9 and an anode of the diode D8, a pin 2 of the amplifier U8A is simultaneously connected with one end of the resistor R13 and a cathode of the diode D8, a pin 2 of the amplifier U9A is simultaneously connected with one end of the resistor R14 and a cathode of the diode D9, a pin 3 of the amplifier U8A is simultaneously connected with the other end of the resistor R14 and a cathode of the diode D10, a pin 1 of the amplifier U9A is connected with an anode of the diode D10, a pin 3 of the amplifier U9A is connected with one end of the resistor R15, the other end of the resistor R15 is grounded, a pin 1 of the amplifier U8A is simultaneously connected with the other end of the resistor R13 and an anode of the voltage regulator D3, a pin 3 of the amplifier U6A is simultaneously connected with a cathode of the voltage regulator D3 and one end of the resistor R6, pin 2 of the amplifier U6A is connected to ground, pin 4 and pin 8 of the amplifier U6A are connected to input voltage, the pin No. 1 of the amplifier U6A is simultaneously connected with the other end of the resistor R6, the cathode of the diode D4, the anode of the diode D5 and one end of the resistor R7, the pin 3 of the amplifier U7A is connected with the other end of the resistor R7 and one end of the resistor R8 at the same time, pin 2 of the amplifier U7A is grounded, pin 4 and pin 8 of the amplifier U7A are used for inputting voltage, the pin No. 1 of the amplifier U7A is simultaneously connected with the other end of the resistor R8, the anode of the diode D6 and the anode of the diode D7 and outputs a signal, the anode of the diode D4 inputs voltage, the cathode of the diode D5 is grounded, the cathode of the diode D6 inputs voltage, and the cathode of the diode D7 is grounded.
In one embodiment, the oscillator U11 is model number ULN2209 and the demodulator/modulator U10 is model number MC 1496K.
The utility model provides a protection method for thing networking mobile base station's surge protection circuit, when this moment mobile base station work is in thunderstorm weather, and the lightning rod can absorb most electric current this moment, and the less part electric current can flow in the basic station, and mobile base station is carrying out the during operation simultaneously, and total control end can send protection instruction, and concrete step is as follows:
step 2, inputting the signal into a signal modulation module, and realizing the purpose of transmitting information by changing the amplitude of an output signal; the amplitude change of the high-frequency signal output at the modulation end and the original signal form a certain functional relationship, and the demodulation end demodulates and outputs the original signal;
In one embodiment, when a transmitter receives signals for transmission, a data control unit divides all the transmitted signals into a limited group for optimization design, selects optimized signals with good orthogonal performance from the limited group for retention, and forms a new transmitted signal set; and analyzing the orthogonal performance of every two signals in the transmission signal set, and designing the anti-interference transmission signal hopping sequence according to the analysis result.
In one embodiment, according to different sets of the transmitted signals, when the former signal is transmitted, the latter signal is delayed, and the time of the delay is determined according to the weather condition and an internally set working threshold; meanwhile, in each transmitting signal set, isolation between each sub transmitting signal is carried out, so that interference between signals can be reduced.
Has the advantages that: according to the invention, when the similar mobile base station works in thunderstorm weather, as the lightning stroke can generate strong current, partial current can not be absorbed, when the similar mobile base station works in thunderstorm weather, the traditional signal straight-in and straight-out mode is changed, when a receiver receives a user signal, the user signal is transferred to the data control unit through the interface, and meanwhile, when the signal is output and transmitted, the signal is output to the transmitter through the interface unit, so that the conversion time and the buffer memory of the signal can be prolonged, the signal can be better stabilized, and therefore, the stable transmission can be realized in the environment with strong interference of the thunderstorm signal, and meanwhile, when the signal is transmitted, each transmitting set can increase a section of delay, and simultaneously, the sub-signals in each transmitting set can be subjected to signal isolation, so that the signals are not interfered with each other; therefore, the invention protects the damage of the surge generated in the lightning weather to the mobile base station and the signal transmission, and simultaneously improves the transmission rate of the signal in the severe weather.
Drawings
FIG. 1 is a flow chart of the operation of the present invention.
Fig. 2 is a circuit diagram of an interface unit of the present invention.
Fig. 3 is a circuit diagram of a signal isolation module of the present invention.
Fig. 4 is a circuit diagram of a clipping filter module of the present invention.
Fig. 5 is a circuit diagram of a signal modulation module of the present invention.
Fig. 6 is a schematic diagram of the operation of the present invention.
Fig. 7 is a signal transmission diagram of the present invention.
Detailed Description
As shown in fig. 1, in this embodiment, a surge protection circuit and a protection method for a mobile base station of the internet of things include: the device comprises a signal transmitting unit, a signal receiving unit, a data control unit, a data storage unit and an interface unit; the interface unit includes: the device comprises a signal isolation module, a signal modulation module and an amplitude limiting and filtering module.
As shown in fig. 3, the signal isolation module includes: the circuit comprises a diode D1, a voltage regulator tube D2, a capacitor C1, a capacitor C2, a capacitor C3, an adjustable resistor RV1, an adjustable resistor RV3, an adjustable resistor RV2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a photoelectric coupler U4, a photoelectric coupler U5, an amplifier U1A, an amplifier U2A and an amplifier U3A.
In a further embodiment, a signal is input to the positive electrode of the voltage regulator D2, the negative electrode of the voltage regulator D2 is simultaneously connected to one end of the capacitor C2, the positive electrode of the diode D1 and the pin No. 2 of the amplifier U1A, the pin No. 3 of the amplifier U1A is connected to one end of the capacitor C1, the other end of the capacitor C1 is connected to the control end of the adjustable resistor RV2, one end of the adjustable resistor RV2 is connected to one end of the capacitor C3, the other end of the adjustable resistor RV2 is connected to one end of the resistor R5, the pin No. 4 of the amplifier U1A is simultaneously connected to the other end of the resistor R5 and the pin No. 4 of the photocoupler U5 for voltage input, the pin No. 3 of the photocoupler U5 is simultaneously connected to the other end of the capacitor C3 and the other end of the capacitor C2, the pin No. 1 of the amplifier U A is simultaneously connected to the negative electrode of the diode D1, One end of the resistor R4 is connected with pin No. 1 of the photocoupler U4, pin No. 8 of the amplifier U1A inputs voltage, pin No. 1 of the photocoupler 5 is connected with the other end of the resistor R4, pin No. 2 of the photocoupler U4 is connected with one end of the resistor R3, the other end of the resistor R3 is grounded, pin No. 4 of the photocoupler U4 inputs voltage, pin No. 3 of the photocoupler U4 is simultaneously connected with one end of the resistor R2, pin No. 2 of the amplifier U2A and one end of the resistor R1, pin No. 2 of the photocoupler U5 has a control end and one end of the adjustable resistor RV3 connected, the other end of the resistor R2 is simultaneously connected with the other end of the adjustable resistor RV3 and one end of the adjustable resistor RV1, pin No. 3 of the amplifier U2A is connected with a control end of the adjustable resistor RV1, the other end input voltage of adjustable resistance RV1, amplifier U2A's No. 1 pin simultaneously with the other end of resistance R1 with amplifier U3A's No. 3 pin is connected, amplifier U3A's No. 2 pin and No. 1 pin are connected and output signal.
As shown in fig. 5, the signal modulation module includes: a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a resistor R17, a resistor R16, an adjustable resistor RV4, a voltage stabilizing D11, a resistor R21, a resistor R20, a resistor R21, a capacitor C11, a resistor R19, a resistor R18, a capacitor C14, a capacitor C12, a capacitor C13, an oscillator U11 and a demodulator/modulator U10;
in a further embodiment, pin No. 1 of the oscillator U11 is connected to one end of the capacitor C7, the other end of the capacitor C7 inputs a signal and is simultaneously connected to one end of the resistor 17 and pin No. 3 of the demodulator/modulator U10, pin No. 2 of the oscillator U11 is connected to one end of the capacitor C8, pin No. 4 of the oscillator U11 is simultaneously connected to the other end of the capacitor C8 and one end of the capacitor C9 and is grounded, the other end of the capacitor C9 is connected to pin No. 9 of the oscillator U11, pin No. 5 of the oscillator U11 is connected to one end of the capacitor C10, pin No. 1 of the demodulator/modulator U10 is simultaneously connected to the other end of the capacitor C10 and one end of the resistor R20, pin No. 2 of the demodulator/modulator U10 is simultaneously connected to the other end of the resistor R20 and one end of the capacitor C11, One end of the resistor R21 is connected with one end of the resistor R22, the other end of the capacitor C11 is connected with the other end of the resistor R22 and grounded, a pin No. 5 of the demodulator/modulator U10 is simultaneously connected with one end of the resistor R16 and the negative electrode of the voltage regulator tube D11, the other end of the resistor R16 is connected with one end of the adjustable resistor RV4, the positive electrode of the voltage regulator tube D11 is grounded, the other end of the resistor R17 is connected with the other end of the adjustable resistor RV4, a pin No. 14 of the demodulator/modulator U10 is connected with the control end of the adjustable resistor RV4 and is used for inputting voltage, a pin No. 11 of the demodulator/modulator U10 is connected with one end of the resistor R18, the other end of the resistor R18 is grounded, a pin No. 13 of the demodulator/modulator U10 is connected with one end of the resistor R19, a pin No. 6 of the demodulator/modulator U10 is connected with the other end of the resistor R19, the No. 7 pin of the demodulator/modulator U10 is connected with one end of the capacitor C12, the No. 10 pin of the demodulator/modulator U10 is connected with one end of the capacitor C14 and one end of the capacitor C13 at the same time and outputs a signal, the other end of the capacitor C14 is grounded, and the other end of the resistor R21 is connected with the No. 8 pin of the oscillator U11, the other end of the capacitor C12 and the other end of the capacitor C13 at the same time and inputs voltage.
As shown in fig. 4, the clipping filtering module includes: a resistor R9, a resistor R10, a resistor R11, a triode Q1, a triode Q2, a triode Q3, a capacitor C4, a capacitor C5, a resistor R12, a capacitor C6, an inductor L1, a diode D8, a diode D9, an amplifier U8A, an amplifier U9A, a resistor R13, a resistor R14, a resistor R15, a diode D10, a voltage regulator D3, a diode D4, a diode D5, an amplifier U6A, a resistor R6, a resistor R7, a resistor R8, an amplifier U7A, a diode D6 and a diode D7;
in a further embodiment, a signal is input to one end of the resistor R9, a base of the transistor Q1 is simultaneously connected to the other end of the resistor R9 and one end of the resistor R10, a collector of the transistor Q1 is connected to one end of the resistor R11, an emitter of the transistor Q1 is simultaneously connected to one end of the resistor R12 and a collector of the transistor Q2, the other end of the resistor R12 is grounded, the other end of the resistor R11 is simultaneously connected to the other end of the resistor R10, a base of the transistor Q2 and a collector of the transistor Q3, an emitter of the transistor Q2 is connected to one end of the capacitor C4, the other end of the capacitor C4 is simultaneously connected to one end of the capacitor C5 and one end of the capacitor C6, a base of the transistor Q3 is simultaneously connected to the other end of the capacitor C5 and one end of the inductor L1, the other end of the capacitor C6 and the other end of the inductor L1 are connected and grounded, the emitter of the triode Q3 is connected to the anode of the diode D9 and the anode of the diode D8 at the same time, the pin No. 2 of the amplifier U8A is connected to one end of the resistor R13 and the cathode of the diode D8 at the same time, the pin No. 2 of the amplifier U9A is connected to one end of the resistor R14 and the cathode of the diode D9 at the same time, the pin No. 3 of the amplifier U8A is connected to the other end of the resistor R14 and the cathode of the diode D10 at the same time, the pin No. 1 of the amplifier U9A is connected to the anode of the diode D10, the pin No. 3 of the amplifier U9A is connected to one end of the resistor R15, the other end of the resistor R15 is grounded, the pin No. 1 of the amplifier U8A is connected to the other end of the resistor R13 and the anode of the diode D3, pin 3 of the amplifier U6A is connected to the negative terminal of the zener diode D3 and one end of the resistor R6, pin 2 of the amplifier U6A is grounded, pins 4 and 8 of the amplifier U6A input voltages, pin 1 of the amplifier U6A is connected to the other end of the resistor R6, the negative terminal of the diode D4, the positive terminal of the diode D5 and one end of the resistor R7, pin 3 of the amplifier U7A is connected to the other end of the resistor R7 and one end of the resistor R8, pin 2 of the amplifier U7A is grounded, pin 4 and pin 8 of the amplifier U A input voltages, pin 1 of the amplifier U7A is connected to the other end of the resistor R8, the positive terminal of the diode D6 and the positive terminal of the diode D7 and outputs a signal, and the positive terminal of the diode D4 inputs a voltage, the cathode of the diode D5 is grounded, the cathode of the diode D6 is inputted with voltage, and the cathode of the diode D7 is grounded.
In a further embodiment, when signal transmission is carried out, at the moment, part of lightning current exists in the circuit, the data control unit divides all transmission signals into a limited group for optimization design, and selects optimization signals with good orthogonal performance from the limited group for retention to form a new transmission signal set; analyzing the orthogonal performance of every two signals in the transmitting signal set, designing an anti-interference transmitting signal hopping sequence according to an analysis result, and forming a new set by the first transmitting signal and the anti-interference signal alternative set as a transmitting signal set by the fact that the probability of the transmitting signal hopping sequence is inversely proportional to the number of signals in the alternative set and the effective probability of anti-interference is higher when the number of the alternative set signals is larger; wherein for each small set of transmitted signals, the orthogonality between the signals in the small set is made as good as possible, resulting in orthogonality between all the signals in the set of transmitted signals.
In a further embodiment, according to the difference of the sets of the transmitted signals, when the former signal is transmitted, the delay of the latter signal is carried out, and the delay time is determined according to the weather condition and the internally set working threshold; meanwhile, in each transmitting signal set, isolation between each sub transmitting signal is carried out, isolation between the sub signal in each transmitting set and other sub signals is carried out firstly, and signals with good orthogonality performance with the sub signals are selected as much as possible according to the isolation, so that the transmission stability can be greatly improved when each sub signal is transmitted.
The working principle is as follows: when a receiver receives a signal and a control unit outputs the signal to a transmitter, the signal is switched and output through an interface unit, a signal isolation module in the interface unit receives the signal at the moment, because partial current generated by thunderstorm weather cannot be absorbed and is transmitted into a mobile base station circuit, the received signal needs to be isolated from the current at the moment, so that the signal can be input into the signal isolation module through a voltage stabilizing pipe D2, meanwhile, an amplifier U1A receives the signal and performs operational amplification on the signal at the moment, partial current signal in the signal is input into an optical coupler U5 through the capacitor C2 and the capacitor C3 which are connected in parallel for primary isolation, at the moment, an adjustable resistor RV2 is matched with a resistor R5 and a capacitor C1 for signal decoupling and adjusting an isolated threshold value, a pin No. 1 of the amplifier U1A outputs the signal to an optical coupler U4 for secondary isolation, and then outputs a stable signal, meanwhile, a signal is output to an amplifier U2A through a No. 3 pin of a photoelectric coupler U4, a resistor R2 and a resistor R1 protect components, an amplifying path is formed by the amplifier U2A, and a signal following path is formed by the amplifier U3A and is output to a signal modulation module;
a signal is input through a pin 1 of the oscillator U11, signal frequency adjustment is carried out through the interior of the oscillator U11, the signal is output through a pin 5 of the oscillator U11, meanwhile, working voltage is input through a pin 8 of the oscillator U11 and is input to a pin 5 and a pin 3 of the demodulator/modulator U10, the resistor R17 and the resistor R16 are matched with the adjustable resistor RV4 to carry out modulation input voltage, the voltage stabilizing tube D11 carries out protection, the signal is input into the demodulator/modulator U10 to carry out signal modulation, and the signal is filtered and output to the amplitude limiting filter module through a pin 10 of the demodulator/modulator U10;
the signal is input through a resistor R9, the signal is input into a triode Q1 through a voltage division circuit formed by a resistor R10 and a resistor R9, an emitter of the triode Q1 is input into a collector of a triode Q1 as a switch at this time, the triode Q2 is amplified at this time, so that a capacitor C4, a capacitor C5, a capacitor C6 and an inductor L1 form a signal filtering circuit, the signal is filtered and noise-filtered, the signal is input through a base of a triode Q6, an emitter of the triode Q6 is conducted at this time, the signal is input into an amplifier U8A and an amplifier U9A for amplification, a diode D8 and a diode D9 are conducted as switches according to the magnitude of the signal flow, when the signal flow is too large, an output value amplifier U9A is conducted through a diode D9 to be amplified and buffered to an amplifier U8A for amplification and output to an amplifier U6A, the amplifier U6A cooperates with a diode D4 to form a primary amplitude limiting amplifier D, The diode D7 cooperates with the amplifier U7A to form a secondary amplification and amplitude limiting circuit for signal amplification and amplitude limiting, and a high-speed operational amplifier is adopted, so that the conversion rate is improved; the input signal is output to the data control unit and the transmitter through two-stage amplification and amplitude limiting, so that signal surge protection is completed.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. The invention is not described in detail in order to avoid unnecessary repetition.
Claims (8)
1. A surge protection circuit for an Internet of things mobile base station, comprising:
a signal transmitting unit for sending wireless signal instruction when a user is in the working range of a mobile base station, matching by the base station, and transmitting data signal to the general base station by the transmitter
The signal receiving unit is used for sending a wireless signal instruction when a user is in the working range of a mobile base station, and the mobile base station receives a wireless signal sent by the user and receives a matching signal sent by a total base pole;
the data control unit is used for converting, stabilizing and conditioning the received wireless signals so as to output stable wireless signals;
the data storage unit is used for storing the received wireless signals, so that the matching speed is improved without the next signal matching;
and the interface unit is used for connecting the transmitter in the signal transmitting unit and the receiver in the signal transmitting unit to be connected with the data control unit and stably transmitting the data signals.
2. The surge protection circuit for the internet of things mobile base station of claim 1, wherein the interface unit comprises: the device comprises a signal isolation module, a signal modulation module and an amplitude limiting and filtering module;
wherein the signal isolation module comprises: the circuit comprises a diode D1, a voltage regulator tube D2, a capacitor C1, a capacitor C2, a capacitor C3, an adjustable resistor RV1, an adjustable resistor RV3, an adjustable resistor RV2, a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a photoelectric coupler U4, a photoelectric coupler U5, an amplifier U1A, an amplifier U2A and an amplifier U3A;
a signal is input to the positive electrode of the voltage regulator tube D2, the negative electrode of the voltage regulator tube D2 is simultaneously connected with one end of the capacitor C2, the positive electrode of the diode D1 and the pin No. 2 of the amplifier U1A, the pin No. 3 of the amplifier U1A is connected with one end of the capacitor C1, the other end of the capacitor C1 is connected with the control end of the adjustable resistor RV2, one end of the adjustable resistor RV2 is connected with one end of the capacitor C3, the other end of the adjustable resistor RV2 is connected with one end of the resistor R5, the pin No. 4 of the amplifier U1A is simultaneously connected with the other end of the resistor R5 and the pin No. 4 of the photocoupler U5 and inputs a voltage, the pin No. 3 of the photocoupler U5 is simultaneously connected with the other end of the capacitor C3 and the other end of the capacitor C2, the pin No. 1 of the amplifier U1A is simultaneously connected with the negative electrode of the diode D6342, one end of the resistor R4 and the pin No. 2 of the photocoupler U4, the No. 8 pin of the amplifier U1A inputs voltage, the No. 1 pin of the photocoupler 5 is connected with the other end of the resistor R4, the No. 2 pin of the photocoupler U4 is connected with one end of the resistor R3, the other end of the resistor R3 is grounded, the No. 4 pin of the photocoupler U4 inputs voltage, the No. 3 pin of the photocoupler U4 is simultaneously connected with one end of the resistor R2, the No. 2 pin of the amplifier U2A and one end of the resistor R1, the No. 2 pin of the photocoupler U5 has a control end and one end of the adjustable resistor RV3 connected, the other end of the resistor R2 is simultaneously connected with the other end of the adjustable resistor RV3 and one end of the adjustable resistor RV1, the No. 3 pin of the amplifier U2A is connected with the control end of the adjustable resistor RV1, the other end of the adjustable resistor RV1 inputs voltage, the No. 1 pin of the amplifier U2A is simultaneously connected with the other end of the resistor R1 and one end of the amplifier U3 pin 3A Pin connection, pin 2 and pin 1 of the amplifier U3A are connected and output signals.
3. The surge protection circuit for the mobile base station of the internet of things according to claim 2, wherein the signal modulation module comprises: a capacitor C7, a capacitor C8, a capacitor C9, a capacitor C10, a capacitor C11, a resistor R17, a resistor R16, an adjustable resistor RV4, a voltage stabilizing D11, a resistor R21, a resistor R20, a resistor R21, a capacitor C11, a resistor R19, a resistor R18, a capacitor C14, a capacitor C12, a capacitor C13, an oscillator U11 and a demodulator/modulator U10;
pin No. 1 of the oscillator U11 is connected to one end of the capacitor C7, pin No. 1 of the capacitor C7 inputs a signal and is simultaneously connected to one end of the resistor 17 and pin No. 3 of the demodulator/modulator U10, pin No. 2 of the oscillator U11 is connected to one end of the capacitor C8, pin No. 4 of the oscillator U11 is simultaneously connected to the other end of the capacitor C8 and one end of the capacitor C9 and is grounded, the other end of the capacitor C9 is connected to pin No. 9 of the oscillator U11, pin No. 5 of the oscillator U11 is connected to one end of the capacitor C10, pin No. 1 of the demodulator/modulator U10 is simultaneously connected to the other end of the capacitor C10 and one end of the resistor R20, pin No. 2 of the demodulator/modulator U10 is simultaneously connected to the other end of the resistor R20, one end of the capacitor C11, one end of the resistor 46r 27 and one end of the resistor 46r 45, the other end of the capacitor C11 is connected with the other end of the resistor R22 and grounded, the pin 5 of the demodulator/modulator U10 is connected with one end of the resistor R16 and the negative electrode of the voltage regulator tube D11 at the same time, the other end of the resistor R16 is connected with one end of the adjustable resistor RV4, the positive electrode of the voltage regulator tube D11 is grounded, the other end of the resistor R17 is connected with the other end of the adjustable resistor RV4, the pin 14 of the demodulator/modulator U10 is connected with the control end of the adjustable resistor RV4 and voltage is input, the pin 11 of the demodulator/modulator U10 is connected with one end of the resistor R18, the other end of the resistor R18 is grounded, the pin 13 of the demodulator/modulator U10 is connected with one end of the resistor R19, the pin 6 of the demodulator/modulator U10 is connected with the other end of the resistor R19, and the pin 7 of the demodulator/modulator U10 is connected with one end of the capacitor C12, the No. 10 pin of the demodulator/modulator U10 is simultaneously connected with one end of the capacitor C14 and one end of the capacitor C13 and outputs a signal, the other end of the capacitor C14 is grounded, and the other end of the resistor R21 is simultaneously connected with the No. 8 pin of the oscillator U11, the other end of the capacitor C12 and the other end of the capacitor C13 and inputs a voltage.
4. The surge protection circuit for the internet of things mobile base station of claim 2, wherein the amplitude limiting and filtering module comprises: a resistor R9, a resistor R10, a resistor R11, a triode Q1, a triode Q2, a triode Q3, a capacitor C4, a capacitor C5, a resistor R12, a capacitor C6, an inductor L1, a diode D8, a diode D9, an amplifier U8A, an amplifier U9A, a resistor R13, a resistor R14, a resistor R15, a diode D10, a voltage regulator D3, a diode D4, a diode D5, an amplifier U6A, a resistor R6, a resistor R7, a resistor R8, an amplifier U7A, a diode D6 and a diode D7;
a signal is input to one end of the resistor R9, a base of the transistor Q1 is connected to the other end of the resistor R9 and one end of the resistor R10 at the same time, a collector of the transistor Q1 is connected to one end of the resistor R11, an emitter of the transistor Q1 is connected to one end of the resistor R12 and a collector of the transistor Q2 at the same time, the other end of the resistor R12 is grounded, the other end of the resistor R11 is connected to the other end of the resistor R10, a base of the transistor Q2 and a collector of the transistor Q3 at the same time, an emitter of the transistor Q2 is connected to one end of the capacitor C4, the other end of the capacitor C4 is connected to one end of the capacitor C5 and one end of the capacitor C6 at the same time, a base of the transistor Q3 is connected to the other end of the capacitor C5 and one end of the inductor L1 at the same time, the other end of the capacitor C6 and the other end of the inductor, an emitter of the triode Q3 is simultaneously connected with an anode of the diode D9 and an anode of the diode D8, a pin 2 of the amplifier U8A is simultaneously connected with one end of the resistor R13 and a cathode of the diode D8, a pin 2 of the amplifier U9A is simultaneously connected with one end of the resistor R14 and a cathode of the diode D9, a pin 3 of the amplifier U8A is simultaneously connected with the other end of the resistor R14 and a cathode of the diode D10, a pin 1 of the amplifier U9A is connected with an anode of the diode D10, a pin 3 of the amplifier U9A is connected with one end of the resistor R15, the other end of the resistor R15 is grounded, a pin 1 of the amplifier U8A is simultaneously connected with the other end of the resistor R13 and an anode of the voltage regulator D3, a pin 3 of the amplifier U6A is simultaneously connected with a cathode of the voltage regulator D3 and one end of the resistor R6, pin 2 of the amplifier U6A is connected to ground, pin 4 and pin 8 of the amplifier U6A are connected to input voltage, the pin No. 1 of the amplifier U6A is simultaneously connected with the other end of the resistor R6, the cathode of the diode D4, the anode of the diode D5 and one end of the resistor R7, the pin 3 of the amplifier U7A is connected with the other end of the resistor R7 and one end of the resistor R8 at the same time, pin 2 of the amplifier U7A is grounded, pin 4 and pin 8 of the amplifier U7A are used for inputting voltage, the pin No. 1 of the amplifier U7A is simultaneously connected with the other end of the resistor R8, the anode of the diode D6 and the anode of the diode D7 and outputs a signal, the anode of the diode D4 inputs voltage, the cathode of the diode D5 is grounded, the cathode of the diode D6 inputs voltage, and the cathode of the diode D7 is grounded.
5. A surge protection circuit for a mobile base station of the Internet of things according to claim 3, wherein the oscillator U11 is model ULN2209, and the demodulator/modulator U10 is model MC 1496K.
6. A protection method for a surge protection circuit of a mobile base station of the Internet of things according to any one of claims 1 to 4, characterized in that when the mobile base station works in a thunderstorm weather, a lightning rod absorbs most of current, a small part of current flows into the base station, and when the mobile base station works, a master control end sends a protection instruction, and the specific steps are as follows:
step 1, firstly, when a receiver of a mobile base station receives a protection instruction, the traditional receiving and transmitting work of a signal receiver and a signal transmitter is changed, the received signal is transmitted to a data control unit through an interface, unidirectional transmission of the signal is realized through a signal isolation module, the input end and the output end are completely electrically isolated, and the output signal has no influence on the input end;
step 2, inputting the signal into a signal modulation module, and realizing the purpose of transmitting information by changing the amplitude of an output signal; the amplitude change of the high-frequency signal output at the modulation end and the original signal form a certain functional relationship, and the demodulation end demodulates and outputs the original signal;
step 3, finally, outputting the signal to an amplitude limiting and filtering module, outputting the signal by amplifying and filtering the signal, and then outputting the signal through an amplitude limiting circuit, wherein the amplitude limiting circuit can prevent the high-power signal from damaging a receiving system in normal operation, and when the input voltage exceeds or is lower than a certain reference value, the output voltage is limited to a certain level and does not change along with the input voltage; thereby effectively outputting a stable signal.
7. The method for protecting the surge protection circuit of the mobile base station of the internet of things according to claim 6, wherein when the transmitter receives the signals for transmission, the data control unit divides all the transmitted signals into a limited group for optimization design, and selects the optimized signals with good orthogonal performance from the limited group for reservation to form a new transmitted signal set; and analyzing the orthogonal performance of every two signals in the transmission signal set, and designing the anti-interference transmission signal hopping sequence according to the analysis result.
8. The method for protecting the surge protection circuit of the mobile base station of the internet of things as claimed in claim 7, wherein the delay of the next transmission signal is performed when the previous transmission signal is transmitted according to the different sets of the transmission signals, and the delay time is determined according to the weather conditions and the internally set working threshold; meanwhile, in each transmitting signal set, isolation between each sub transmitting signal is carried out, so that interference between signals can be reduced.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010867150.8A CN112234589B (en) | 2020-08-26 | 2020-08-26 | Surge protection circuit and protection method for mobile base station of Internet of things |
| PCT/CN2020/111748 WO2022041050A1 (en) | 2020-08-26 | 2020-08-27 | Power surge protection circuit for internet of things mobile base station, and protection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010867150.8A CN112234589B (en) | 2020-08-26 | 2020-08-26 | Surge protection circuit and protection method for mobile base station of Internet of things |
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| CN112234589B CN112234589B (en) | 2022-04-29 |
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| WO2022041050A1 (en) * | 2020-08-26 | 2022-03-03 | 南京云天致信信息科技有限公司 | Power surge protection circuit for internet of things mobile base station, and protection method |
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| CN117134715B (en) * | 2023-10-26 | 2024-01-26 | 苏州仁正智探科技有限公司 | Induction type oil liquid abrasive dust micro-signal two-stage amplification processing system and method |
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| CN112234589B (en) * | 2020-08-26 | 2022-04-29 | 南京云天致信信息科技有限公司 | Surge protection circuit and protection method for mobile base station of Internet of things |
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- 2020-08-27 WO PCT/CN2020/111748 patent/WO2022041050A1/en active Application Filing
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| CN1988412A (en) * | 2006-12-23 | 2007-06-27 | 桂林市思奇通信设备有限公司 | High frequency broad band friquency shift repeator |
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| CN109802699A (en) * | 2019-01-24 | 2019-05-24 | 维沃移动通信有限公司 | A kind of signal receiving/transmission device and terminal device |
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| WO2022041050A1 (en) * | 2020-08-26 | 2022-03-03 | 南京云天致信信息科技有限公司 | Power surge protection circuit for internet of things mobile base station, and protection method |
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| WO2022041050A1 (en) | 2022-03-03 |
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