CN210864460U - Low-voltage electronic equipment control system - Google Patents
Low-voltage electronic equipment control system Download PDFInfo
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- CN210864460U CN210864460U CN201921045311.4U CN201921045311U CN210864460U CN 210864460 U CN210864460 U CN 210864460U CN 201921045311 U CN201921045311 U CN 201921045311U CN 210864460 U CN210864460 U CN 210864460U
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Abstract
The utility model discloses a low pressure electronic equipment control system, including frequency acquisition circuit, amplitude limiting frequency modulation circuit and constant current output circuit, the frequency acquisition circuit gathers the signal frequency in the analog signal passageway in the low pressure electronic equipment control terminal, and this analog signal passageway is the passageway that low pressure electronic equipment control terminal received signal acquisition module output signal used, amplitude limiting frequency modulation circuit application diode D2-diode D5 and fortune ware AR3 constitute the combined circuit to signal amplitude limiting-enlarge-amplitude limiting regulation, and application electric capacity C2, electric capacity C3 and triode Q1 constitute frequency modulation circuit to signal frequency modulation simultaneously, constant current output circuit application triode Q2, triode Q3 and stabilivolt D7 constitute constant current source circuit to signal constant current output. The utility model discloses a frequency acquisition circuit, amplitude limiting frequency modulation circuit and constant current output circuit cooperation make the difficult emergence decay of analog signal in transmission process, have avoided leading to signal power not enough and cause the problem of low pressure electronic equipment trouble.
Description
Technical Field
The utility model relates to the technical field of circuits, specifically a low pressure electronic equipment control system.
Background
At present, along with the continuous development of science and technology, electronic equipment is more and more, has improved people's quality of life and level greatly, then to low-voltage electronic equipment the most at present feedback be that the analog signal error that control terminal received is great, that is to say that the signal in the analog signal passageway in the low-voltage electronic equipment control terminal of mill easily takes place the decay in transmission process, leads to signal power not enough, causes low-voltage electronic equipment trouble.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a low pressure electronic equipment control system to solve the easy emergence decay of analog signal in its control terminal of traditional electronic equipment in the transmission course, lead to signal power not enough, cause the problem of low pressure electronic equipment trouble.
In order to achieve the above object, the utility model provides a following technical scheme: a low-voltage electronic equipment control system comprises a frequency acquisition circuit, an amplitude limiting and frequency modulating circuit and a constant current output circuit, the frequency acquisition circuit acquires the signal frequency in an analog signal channel in the low-voltage electronic equipment control terminal, the analog signal channel is used for the low-voltage electronic equipment control terminal to receive the output signal of the signal acquisition module, the amplitude limiting and frequency modulating circuit uses a diode D2, a diode D5 and an operational amplifier AR3 to form a composite circuit for carrying out amplitude limiting, amplification and amplitude limiting regulation on signals, meanwhile, a frequency modulation circuit in the amplitude limiting frequency modulation circuit is used for modulating the frequency of the signal, the frequency modulation circuit consists of a capacitor C2, a capacitor C3 and a triode Q1, the constant current output circuit utilizes a triode Q2, a triode Q3 and a voltage regulator tube D7 to form a constant current source circuit to output signals in a constant current mode, namely compensation signals of signals in an analog signal channel in a control terminal of low-voltage electronic equipment.
Preferably, the frequency acquisition circuit selects a frequency transformer J1 with the model of SJ-ADC to acquire the signal frequency in the analog signal channel in the control terminal of the low-voltage electronic device, a voltage-stabilizing tube D1 stabilizes the voltage, a power supply of the frequency transformer J1 is connected with one end of a capacitor C1 and a resistor R1 and +5V of the power supply, the grounding end of the frequency transformer J1 is grounded, the output end of the frequency transformer J1 is connected with the other end of the capacitor C1 and the resistor R1, one end of the resistor R2 and the cathode of the voltage-stabilizing tube D1, the other end of the resistor R2 is connected with the cathode of a diode D2, and the anode of the voltage-stabilizing tube D685.
Preferably, the amplitude-limiting frequency modulation circuit comprises a diode D2, the cathode of the diode D2 is connected with the anode of the diode D3, the anode of the diode D2 is connected with one end of a resistor R3, the non-inverting input end of an operational amplifier AR3 and the cathode of a diode D3, the inverting input end of the operational amplifier AR3 is connected with one end of a resistor R4, the other end of the resistor R4 is grounded, the output end of the operational amplifier AR3 is connected with the other end of the resistor R3, the cathode of the diode D4 and the anode of the diode D4, the anode of the diode D4 is connected with the cathode of the diode D4, the base of the transistor Q4 and one end of a capacitor C4, the emitter of the transistor Q4 is connected with one end of the resistor R4 and one end of the resistor R4, the other end of the capacitor C4 is connected with the other end of the resistor R4 and one end of the capacitor C4, the resistor R4 and the other end of the power supply resistor R365 + V.
Preferably, in the constant current output circuit, the anode of the diode D6 is connected to one end of the resistor R7, the other end of the resistor R7 is connected to one end of the resistor R8, one end of the capacitor C5 and the collector of the transistor Q1, the other end of the resistor R8 is connected to the emitter of the transistor Q2, the base of the transistor Q2 is connected to the collector of the transistor Q3 and the cathode of the diode D6, the collector of the transistor Q2 is connected to the base of the transistor Q3, the other end of the capacitor C5 and the cathode of the regulator D7, the anode of the regulator D7 is grounded, the emitter of the transistor Q3 is connected to one end of the resistor R9, and the other end of the resistor R9.
Preferably, the capacitor C2 and the capacitor C3 are bypass capacitors.
The utility model provides a low pressure electronic equipment control system possesses following beneficial effect:
(1) the utility model discloses an application diode D2, diode D5 and fortune ware AR3 constitute the combined circuit to the signal amplitude limit-enlarge-amplitude limit regulation, to the signal symmetry amplitude limit, guarantee that the signal has sufficient amplitude limit degree of depth, play the effect of stable signal static operating point, simultaneously application electric capacity C2, electric capacity C3 and triode Q1 constitute frequency modulation circuit to signal frequency modulation, electric capacity C2, electric capacity C3 is bypass electric capacity, filtering high frequency signal noise, the realization is to signal frequency modulation's effect, adopt above-mentioned mode, realized stable to the signal, frequency modulation's effect, prevent the signal attenuation, guarantee compensation signal's stability.
(2) The utility model discloses an application triode Q2, triode Q3 and stabilivolt D7 constitute constant current source circuit and export the signal constant current, utilize stabilivolt D7 to stabilize the effect of triode Q3 base current potential, stabilize triode Q3 projecting pole current potential, realize the effect of constant current output, also be the compensation signal for analog signal passageway internal signal among the low pressure electronic equipment control terminal, adopt the mode of compensation signal to prevent the signal attenuation.
Drawings
FIG. 1 is a block diagram of the system of the present invention;
fig. 2 is a schematic circuit diagram of the present invention.
In the figure: 1. a frequency acquisition circuit; 2. an amplitude limiting frequency modulation circuit; 3. a constant current output circuit.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1-2, the utility model provides a technical solution: a low-voltage electronic equipment control system comprises a frequency acquisition circuit 1, an amplitude limiting and frequency modulating circuit 2 and a constant current output circuit 3, the frequency acquisition circuit 1 acquires the signal frequency in an analog signal channel in the low-voltage electronic equipment control terminal, the analog signal channel is used for the low-voltage electronic equipment control terminal to receive the output signal of the signal acquisition module, the amplitude limiting and frequency modulating circuit 2 uses a diode D2, a diode D5 and an operational amplifier AR3 to form a composite circuit for carrying out amplitude limiting, amplification and amplitude limiting regulation on signals, meanwhile, a frequency modulation circuit in the amplitude limiting frequency modulation circuit 2 is used for modulating the frequency of the signal, the frequency modulation circuit consists of a capacitor C2, a capacitor C3 and a triode Q1, the constant current output circuit 3 uses the triode Q2, the triode Q3 and the voltage regulator tube D7 to form a constant current source circuit to output the constant current of the signal, namely the compensation signal of the signal in the analog signal channel in the control terminal of the low-voltage electronic equipment.
The frequency acquisition circuit 1 adopts a frequency transformer J1 with the model of SJ-ADC to acquire the signal frequency in an analog signal channel in a control terminal of low-voltage electronic equipment, a voltage-stabilizing tube D1 stabilizes the voltage, a power supply of the frequency transformer J1 is connected with one end of a capacitor C1, one end of a resistor R634 and a power supply +5V, the grounding end of a frequency transformer J1 is grounded, the output end of the frequency transformer J1 is connected with the other end of the capacitor C1 and a resistor R1, one end of a resistor R2 and the cathode of a voltage-stabilizing tube D1, the other end of the resistor R2 is connected with the cathode of a diode D8653, and the anode of the voltage-stabilizing tube D1 is grounded, so that the power of signals in the acquisition and transmission processes is improved, and the voltage-stabilizing tube D1; the amplitude limiting frequency modulation circuit 2 comprises a diode D2, the cathode of a diode D2 is connected with the anode of a diode D3, the anode of a diode D2 is connected with one end of a resistor R3, the non-inverting input end of an operational amplifier AR3 and the cathode of a diode D3, the inverting input end of an operational amplifier AR3 is connected with one end of a resistor R4, the other end of a resistor R4 is grounded, the output end of the operational amplifier AR 4 is connected with the other end of the resistor R4, the cathode of the diode D4 and the anode of the diode D4, the anode of the diode D4 is connected with the cathode of the diode D4, the base of a transistor Q4, one end of a capacitor C4, the emitter of the transistor Q4 is connected with the resistor R4 and one end of the resistor R4, the other end of the capacitor C4 is connected with the other end of the resistor R4 and one end of the capacitor C4, the other end of the resistor R4 and the other end of the amplitude limiting frequency modulation circuit D4 are connected with one end of a power supply resistor, The diode D5 and the operational amplifier AR3 form a composite circuit for carrying out amplitude limiting-amplification-amplitude limiting adjustment on signals, the signals are subjected to symmetrical amplitude limiting, sufficient amplitude limiting depth of the signals is guaranteed, and the effect of stabilizing the static working point of the signals is achieved; the positive pole of a diode D6 in the constant current output circuit 3 is connected with one end of a resistor R7, the other end of a resistor R7 is connected with one end of a resistor R8, one end of a capacitor C5 and the collector of a triode Q1, the other end of a resistor R8 is connected with the emitter of a triode Q2, the base of the triode Q2 is connected with the collector of a triode Q3 and the cathode of the diode D6, the collector of the triode Q2 is connected with the base of the triode Q3, the other end of the capacitor C5 and the cathode of a voltage regulator D7, the positive pole of the voltage regulator D7 is grounded, the emitter of the triode Q3 is connected with one end of the resistor R9, the other end of the resistor R9 is connected with a signal output port, so that the constant current output circuit 3 uses a triode Q2, a triode Q3 and a voltage regulator D7 to form a constant current source circuit to output signals, the base potential of the triode Q3 is stabilized by using a voltage regulator D7, the emitter potential of the triode Q3, the signal attenuation is prevented by adopting a mode of compensating the signal; the capacitor C2 and the capacitor C3 are bypass capacitors, so that high-frequency signal noise can be filtered, and the frequency modulation effect on signals is enhanced.
The working principle is as follows: when the control terminal receives signals, the frequency acquisition circuit 1 acquires the signal frequency in an analog signal channel in the control terminal of the low-voltage electronic equipment, the analog signal channel is used for the low-voltage electronic equipment control terminal to receive the signals output by the signal acquisition module, then the amplitude limiting and frequency modulation circuit 2 performs the functions of amplitude limiting, amplifying and amplitude limiting adjustment on the signals by using a composite circuit consisting of a diode D2, a diode D5 and an operational amplifier AR3, the signals are subjected to symmetrical amplitude limiting, the signals are ensured to have enough amplitude limiting depth, the function of stabilizing the static working point of the signals is achieved, meanwhile, the frequency modulation circuit consisting of a capacitor C2, a capacitor C3 and a triode Q1 is used for performing frequency modulation on the signals, high-frequency signal noise is filtered by a capacitor C2 and a capacitor C3, the function of frequency modulation on the signals is achieved, and by adopting the mode, the functions of stabilizing and frequency modulation on, and finally, a constant current source circuit consisting of the triode Q2, the triode Q3 and the voltage regulator tube D7 is used for outputting the constant current of the signal through the constant current output circuit 3, namely the compensation signal of the signal in the analog signal channel in the control terminal of the low-voltage electronic equipment.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a low pressure electronic equipment control system, includes frequency acquisition circuit (1), limit frequency modulation circuit (2) and constant current output circuit (3), its characterized in that: the frequency acquisition circuit (1) acquires signal frequency in an analog signal channel in the low-voltage electronic equipment control terminal, the analog signal channel is used for receiving signals output by the signal acquisition module at the low-voltage electronic equipment control terminal, the amplitude limiting and frequency modulation circuit (2) uses a composite circuit formed by a diode D2, a diode D5 and an operational amplifier AR3 to carry out amplitude limiting, amplification and amplitude limiting adjustment on the signals, and simultaneously uses a frequency modulation circuit in the amplitude limiting and frequency modulation circuit (2) to carry out frequency modulation on the signals, the frequency modulation circuit comprises a capacitor C2, a capacitor C3 and a triode Q1, the constant current output circuit (3) uses a triode Q2, a triode Q3 and a voltage stabilizing tube D7 to form a constant current source circuit to carry out constant current output on the signals, and the constant current source circuit is also used for compensating signals of the signals in the analog signal channel in.
2. A low-voltage electronic device control system according to claim 1, characterized in that: the frequency acquisition circuit (1) adopts a frequency transformer J1 with the model of SJ-ADC to acquire the signal frequency in an analog signal channel in a control terminal of low-voltage electronic equipment, a voltage-stabilizing tube D1 stabilizes voltage, a power supply of the frequency transformer J1 is connected with one end of a capacitor C1 and a resistor R1 and +5V of a power supply, the grounding end of a frequency transformer J1 is grounded, the output end of the frequency transformer J1 is connected with the other end of the capacitor C1 and the resistor R1, one end of the resistor R2 and the cathode of the voltage-stabilizing tube D1, the other end of the resistor R2 is connected with the cathode of a diode D2, and the anode of the voltage-stabilizing tube D1.
3. A low-voltage electronic device control system according to claim 1, characterized in that: the amplitude limiting frequency modulation circuit (2) comprises a diode D2, the cathode of the diode D2 is connected with the anode of a diode D3, the anode of a diode D2 is connected with one end of a resistor R3, the non-inverting input end of an operational amplifier AR3 and the cathode of a diode D3, the inverting input end of an operational amplifier AR3 is connected with one end of a resistor R4, the other end of the resistor R4 is grounded, the output end of an operational amplifier AR3 is connected with the other end of a resistor R3, the cathode of a diode D4 and the anode of a diode D4, the anode of a diode D4 is connected with the cathode of the diode D4, the base of a triode Q4 and one end of a capacitor C4, the emitter of the triode Q4 is connected with one end of the resistor R4 and one end of the resistor R4, the other end of the capacitor C4 is connected with the other end of the resistor R4 and one end of the capacitor C4, the other end of the resistor R4 and the other end of the power supply resistor R.
4. A low-voltage electronic device control system according to claim 1, characterized in that: the anode of a diode D6 in the constant current output circuit (3) is connected with one end of a resistor R7, the other end of the resistor R7 is connected with one end of a resistor R8 and a capacitor C5 and the collector of a triode Q1, the other end of the resistor R8 is connected with the emitter of a triode Q2, the base of a triode Q2 is connected with the collector of a triode Q3 and the cathode of a diode D6, the collector of the triode Q2 is connected with the base of the triode Q3, the other end of the capacitor C5 and the cathode of a voltage regulator D7, the anode of the voltage regulator D7 is grounded, the emitter of the triode Q3 is connected with one end of a resistor R9, and the other end of the resistor R9 is connected.
5. A low-voltage electronic device control system according to claim 1, characterized in that: the capacitor C2 and the capacitor C3 are bypass capacitors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045311.4U CN210864460U (en) | 2019-07-05 | 2019-07-05 | Low-voltage electronic equipment control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921045311.4U CN210864460U (en) | 2019-07-05 | 2019-07-05 | Low-voltage electronic equipment control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210864460U true CN210864460U (en) | 2020-06-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921045311.4U Expired - Fee Related CN210864460U (en) | 2019-07-05 | 2019-07-05 | Low-voltage electronic equipment control system |
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| Country | Link |
|---|---|
| CN (1) | CN210864460U (en) |
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2019
- 2019-07-05 CN CN201921045311.4U patent/CN210864460U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200626 |