CN209593425U - A kind of electrical communication system - Google Patents

Abstract

The utility model discloses a kind of electrical communication systems, including frequency collection circuit, pressure stabilizing FM circuit and filtering output circuit, signal frequency in the frequency collection circuit acquisition low-voltage equipment controlling terminal in analog signal channel, the signal of single-frequency is filtered out with resistance R3- resistance R5 and capacitor C2-capacitor C4 composition frequency selection circuit, the pressure stabilizing FM circuit uses triode Q1, triode Q2 and voltage-stabiliser tube D6 composition voltage regulator circuit is to signal pressure stabilizing, triode Q3 and capacitor C5 is used simultaneously, capacitor C6 forms FM circuit to signal frequency modulation, finally filtering output circuit uses inductance L2 and capacitor C7, it is exported after capacitor C8 composition filter circuit filtering, it being capable of signal frequency in real-time detection low-voltage electronic equipment controlling terminal in analog signal channel, signal frequency is converted to simultaneously In long-distance intelligent Facility Control Terminal in analog signal channel signal thermal compensation signal.

Description

A kind of electrical communication system

Technical field

The utility model relates to field of circuit technology, more particularly to a kind of electrical communication system.

Background technique

Currently, with the continuous development of science and technology, electronic equipment is more and more, people's lives quality and water are substantially increased It is flat, then low-voltage electronic equipment feed back at present at most be exactly that the received analog signal error of controlling terminal is larger, namely Be the signal in factory's low-voltage electronic equipment controlling terminal in analog signal channel in transmission process vulnerable to high frequency or with frequency Interference, cause signal power insufficient, cause low-voltage electronic equipment failure.

Summary of the invention

For above situation, for the defect for overcoming the prior art, the utility model to be designed to provide a kind of electronics logical News system, can signal frequency in real-time detection low-voltage electronic equipment controlling terminal in analog signal channel, while by signal Frequency conversion is the thermal compensation signal of signal in analog signal channel in long-distance intelligent Facility Control Terminal.

Its technical solution solved is: a kind of electrical communication system, including frequency collection circuit, pressure stabilizing FM circuit and filter Wave output circuit, the frequency collection circuit acquire the signal frequency in low-voltage equipment controlling terminal in analog signal channel, this Analog signal channel is the channel that low-voltage equipment controlling terminal receives signal acquisition module output signal, with resistance R3- electricity Resistance R5 and capacitor C2-capacitor C4 composition frequency selection circuit filters out the signal of single-frequency, and the pressure stabilizing FM circuit uses three poles Pipe Q1, triode Q2 and voltage-stabiliser tube D6 composition voltage regulator circuit use triode Q3 and capacitor C5, capacitor C6 to signal pressure stabilizing FM circuit is formed to signal frequency modulation, output circuit is finally filtered with inductance L2 and capacitor C7, capacitor C8 and forms filter circuit Exported after filtering, that is to say in low-voltage equipment controlling terminal in analog signal channel signal thermal compensation signal；

The pressure stabilizing FM circuit includes triode Q1, one end of the collector connecting resistance R6 of triode Q1 and diode D3 Anode, the other end of the base stage connecting resistance R6 of triode Q1 and the collector of triode Q2, the emitter of triode Q1 connect electricity R7, one end of resistance R8 and one end of capacitor C5 and the base stage of triode Q3 are hindered, the base stage connecting resistance R8's of triode Q2 is another One end of one end and resistance R9, the other end of the emitter connecting resistance R7 of triode Q2 and the cathode of voltage-stabiliser tube D6, voltage-stabiliser tube D6 Anode and the other end of resistance R9 be grounded, one end of another terminating resistor R10 of capacitor C5, capacitor C6, the hair of triode Q3 The other end of emitter-base bandgap grading connecting resistance R10 and one end of resistance R11, the other end ground connection of resistance R11, capacitor C6, the collection of triode Q3 Electrode connects the cathode of diode D3.

By above technical scheme, the utility model has the following beneficial effects: 1. with triode Q1, triode Q2 and steady Pressure pipe D6 forms voltage regulator circuit to signal pressure stabilizing, and voltage-stabiliser tube D6 stablizes triode Q2 emitter potential, that is to say stable triode Q1 emitter potential reaches pressure stabilization function, while with triode Q3 and capacitor C5, capacitor C6 composition FM circuit to signal tune Frequently, capacitor C5, capacitor C6 are that FM circuit filters out high-frequency signal noise, and triode Q3 is amplifying triode, plays thermal compensation signal In conduction loss, guarantee the intensity of thermal compensation signal, realize to the calibration of the automatic frequency adjustment of signal；2. using inductance L2 and capacitor It is exported after C7, capacitor C8 composition filter circuit filtering, filters out signal noise, that is to say to simulate letter in low-voltage equipment controlling terminal The thermal compensation signal of signal in number channel realizes and signal frequency is converted to analog signal in long-distance intelligent Facility Control Terminal leads to The function of the thermal compensation signal of signal in road.

Detailed description of the invention

Fig. 1 is the system module figure of the utility model.

Fig. 2 is the circuit diagram of the utility model.

Specific embodiment

Aforementioned and other technology contents, feature and effect in relation to the utility model, in following cooperation with reference to figures 1 through attached Fig. 2 can be clearly presented in the detailed description of embodiment.The structure content being previously mentioned in following embodiment is to say Bright book attached drawing is reference.

Each exemplary embodiment of the utility model is described below with reference to accompanying drawings.

Embodiment one, a kind of electrical communication system, including frequency collection circuit, pressure stabilizing FM circuit and filtering output electricity Road, the frequency collection circuit acquire the signal frequency in low-voltage equipment controlling terminal in analog signal channel, this analog signal Channel is the channel that low-voltage equipment controlling terminal receives signal acquisition module output signal, with resistance R3- resistance R5 and electricity Hold the signal that C2-capacitor C4 composition frequency selection circuit filters out single-frequency, the pressure stabilizing FM circuit uses triode Q1, three Pole pipe Q2 and voltage-stabiliser tube D6 composition voltage regulator circuit is adjusted to signal pressure stabilizing, while with triode Q3 and capacitor C5, capacitor C6 composition Frequency circuit is to signal frequency modulation, after finally filtering output circuit with inductance L2 and capacitor C7, capacitor C8 composition filter circuit filtering Output, that is to say in low-voltage equipment controlling terminal in analog signal channel signal thermal compensation signal；

The pressure stabilizing FM circuit is steady to signal with triode Q1, triode Q2 and voltage-stabiliser tube D6 composition voltage regulator circuit Pressure, voltage-stabiliser tube D6 stablize triode Q2 emitter potential, that is to say stable triode Q1 emitter potential, reach pressure stabilization function, Simultaneously with triode Q3 and capacitor C5, capacitor C6 composition FM circuit to signal frequency modulation, capacitor C5, capacitor C6 are FM circuit High-frequency signal noise is filtered out, triode Q3 is amplifying triode, plays the conduction loss in thermal compensation signal, guarantees thermal compensation signal Intensity realizes the automatic frequency adjustment calibration to signal, and one end of the collector connecting resistance R6 of triode Q1 and diode D3 are just Pole, the other end of the base stage connecting resistance R6 of triode Q1 and the collector of triode Q2, the emitter connecting resistance R7 of triode Q1, The base stage of one end of resistance R8 and one end of capacitor C5 and triode Q3, the other end of the base stage connecting resistance R8 of triode Q2 and One end of resistance R9, the other end of the emitter connecting resistance R7 of triode Q2 and the cathode of voltage-stabiliser tube D6, the anode of voltage-stabiliser tube D6 It is grounded with the other end of resistance R9, one end of another terminating resistor R10 of capacitor C5, capacitor C6, the emitter of triode Q3 connect The other end of resistance R10 and one end of resistance R11, the other end ground connection of resistance R11, capacitor C6, the collector of triode Q3 connect The cathode of diode D3.

Embodiment two, on the basis of example 1, the filtering output circuit use inductance L2 and capacitor C7, capacitor C8 It is exported after composition filter circuit filtering, filters out signal noise, that is to say as in low-voltage equipment controlling terminal in analog signal channel The thermal compensation signal of signal, a terminating resistor R12, one end of capacitor C7 and the collector of triode Q3 of inductance L2, inductance L2's One end of another terminating resistor R13, capacitor C8, the other end ground connection of resistance R12, capacitor C7, capacitor C8, resistance R13's is another Termination signal output port.

Embodiment three, on the basis of example 2, the frequency collection circuit select the frequency of model SJ-ADC mutual Sensor J1 acquires the signal frequency in low-voltage equipment controlling terminal in analog signal channel, this analog signal channel is low-voltage equipment Controlling terminal receives the channel of signal acquisition module output signal, with resistance R3- resistance R5 and capacitor C2-capacitor C4 group The signal of single-frequency is filtered out at frequency selection circuit, the signal of single-frequency can prepare for Signal Regulation, ensure that simultaneously The stabilization of signal frequency, the power supply termination capacitor C1 of frequency mutual inductor J1, one end of resistance R1 and power supply+5V, frequency mutual inductor The ground terminal of J1 is grounded, output termination capacitor C1, the other end of resistance R1 and one end of resistance R2 of frequency mutual inductor J1, resistance One end of another terminating resistor R3 of R2, capacitor C2, the other end of another terminating resistor R4 of resistance R3, capacitor C4, capacitor C2 Another terminating resistor R5, capacitor C3 one end, resistance R5, capacitor C4 the other end ground connection, another termination capacitor of resistance R4 The other end of C3 and the collector of triode Q1.

The utility model is when specifically used, a kind of electrical communication system, including frequency collection circuit, pressure stabilizing FM circuit With filtering output circuit, the frequency collection circuit acquires the signal frequency in low-voltage equipment controlling terminal in analog signal channel Rate, this analog signal channel is the channel that low-voltage equipment controlling terminal receives signal acquisition module output signal, with resistance R3- resistance R5 and capacitor C2-capacitor C4 composition frequency selection circuit filters out the signal of single-frequency, the pressure stabilizing FM circuit fortune With triode Q1, triode Q2 and voltage-stabiliser tube D6 composition voltage regulator circuit to signal pressure stabilizing, voltage-stabiliser tube D6 stablizes triode Q2 transmitting Electrode potential that is to say stable triode Q1 emitter potential, reach pressure stabilization function, while using triode Q3 and capacitor C5, electricity Hold C6 composition FM circuit to signal frequency modulation, capacitor C5, capacitor C6 are that FM circuit filters out high-frequency signal noise, and triode Q3 is Amplifying triode plays the conduction loss in thermal compensation signal, guarantees the intensity of thermal compensation signal, realizes the automatic frequency adjustment to signal Calibration, finally filter output circuit with inductance L2 and capacitor C7, capacitor C8 composition filter circuit filtering after export, that is to say for In low-voltage equipment controlling terminal in analog signal channel signal thermal compensation signal.

The above is to combine specific embodiment further detailed description of the utility model, and it cannot be said that originally Utility model specific implementation is limited only to this；Belonging to the utility model and for those skilled in the technology concerned, In Under the premise of technical solutions of the utility model thinking, made expansion and the replacement of operating method, data should all be fallen in Within scope of protection of the utility model.

Claims (3)

1. a kind of electrical communication system, including frequency collection circuit, pressure stabilizing FM circuit and filtering output circuit, feature exist In: the signal frequency in the frequency collection circuit acquisition low-voltage equipment controlling terminal in analog signal channel, this analog signal Channel is the channel that low-voltage equipment controlling terminal receives signal acquisition module output signal, with resistance R3- resistance R5 and electricity Hold the signal that C2-capacitor C4 composition frequency selection circuit filters out single-frequency, the pressure stabilizing FM circuit uses triode Q1, three Pole pipe Q2 and voltage-stabiliser tube D6 composition voltage regulator circuit is adjusted to signal pressure stabilizing, while with triode Q3 and capacitor C5, capacitor C6 composition Frequency circuit is to signal frequency modulation, after finally filtering output circuit with inductance L2 and capacitor C7, capacitor C8 composition filter circuit filtering Output, that is to say in low-voltage equipment controlling terminal in analog signal channel signal thermal compensation signal；The pressure stabilizing FM circuit Including triode Q1, one end of the collector connecting resistance R6 of triode Q1 and the anode of diode D3, the base stage of triode Q1 are connect The other end of resistance R6 and the collector of triode Q2, the emitter connecting resistance R7 of triode Q1, one end of resistance R8 and capacitor One end of C5 and the base stage of triode Q3, the other end of the base stage connecting resistance R8 of triode Q2 and one end of resistance R9, three poles The other end of the emitter connecting resistance R7 of pipe Q2 and the cathode of voltage-stabiliser tube D6, the anode of voltage-stabiliser tube D6 and another termination of resistance R9 Ground, one end of another terminating resistor R10 of capacitor C5, capacitor C6, the other end and electricity of the emitter connecting resistance R10 of triode Q3 One end of R11, the other end ground connection of resistance R11, capacitor C6 are hindered, the collector of triode Q3 connects the cathode of diode D3.

2. a kind of electrical communication system according to claim 1, it is characterised in that: the filtering output circuit includes inductance A terminating resistor R12, one end of capacitor C7 and the collector of triode Q3 of L2, inductance L2, another terminating resistor of inductance L2 One end of R13, capacitor C8, the other end ground connection of resistance R12, capacitor C7, capacitor C8, another termination signal output of resistance R13 Port.

3. a kind of electrical communication system according to claim 2, it is characterised in that: the frequency collection circuit includes model For the frequency mutual inductor J1 of SJ-ADC, the power supply termination capacitor C1 of frequency mutual inductor J1, one end of resistance R1 and power supply+5V, frequency The ground terminal of rate mutual inductor J1 is grounded, the output termination capacitor C1 of frequency mutual inductor J1, the other end of resistance R1 and resistance R2 One end, one end of another terminating resistor R3 of resistance R2, capacitor C2, another terminating resistor R4 of resistance R3, capacitor C4 it is another End, one end of another terminating resistor R5 of capacitor C2, capacitor C3, the other end ground connection of resistance R5, capacitor C4, resistance R4's is another The other end of termination capacitor C3 and the collector of triode Q1.