CN105974957A - Signal processing system for electronic temperature controller based on frontend signal amplifying circuit - Google Patents
Signal processing system for electronic temperature controller based on frontend signal amplifying circuit Download PDFInfo
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- CN105974957A CN105974957A CN201610451978.9A CN201610451978A CN105974957A CN 105974957 A CN105974957 A CN 105974957A CN 201610451978 A CN201610451978 A CN 201610451978A CN 105974957 A CN105974957 A CN 105974957A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/1917—Control of temperature characterised by the use of electric means using digital means
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Abstract
The invention discloses a signal processing system for an electronic temperature controller based on a frontend signal amplifying circuit. The signal processing system is characterized in that the signal processing system is mainly composed of a processing chip U, a polar capacitor C4, the frontend signal amplifying circuit, a low-pass filter circuit, a pulse shaping circuit which is connected with the processing chip U, a data signal output circuit which is connected with the pulse shaping circuit, and a full-bridge buffer circuit which is serially connected between the CM pin of the processing chip U and the data signal output circuit. The signal processing system can amplify a weak signal which is output from a temperature sensor and improves signal processing accuracy of the signal processing system. Furthermore the signal processing system can keep waveform consistency of the output signal and the input signal and effectively ensures no waveform distortion of the output signal, thereby ensuring accurate temperature control of the electronic temperature controller.
Description
Technical field
The present invention relates to electronic applications, specifically, be a kind of electronics temperature based on advance signal amplifying circuit
Control device signal processing system.
Background technology
Along with the development of science and technology, electronic temperature controller has been widely used in the middle of daily commercial production, uses
In the temperature of production equipment, environment is detected and controls, to improve production efficiency and product quality.So
And, the signal processing system that existing electronic temperature controller is used exists inaccurate to signal processing, easily
There is the problem of distortion in the waveform making signal, causes electronic temperature controller to control not accurate enough, seriously to temperature
Have impact on its control accuracy to temperature.
The electronic temperature controller signal processing system of signal processing accuracy can be improved just therefore it provides a kind of
It it is the task of top priority.
Summary of the invention
It is an object of the invention to the signal processing system overcoming electronic temperature controller of the prior art to be used
There is defect inaccurate to signal processing, it is provided that a kind of based on advance signal amplifying circuit electronic temperature control
Device signal processing system.
The present invention is achieved through the following technical solutions: a kind of electronic temperature control based on advance signal amplifying circuit
Device signal processing system, mainly by processing chip U, with the CF pipe processing chip U after positive electrode resistance R6
The polar capacitor C4 that foot is connected, negative pole is connected with the CM pin processing chip U after resistance R11,
The advance signal amplifying circuit being connected with the IN pin processing chip U, is connected with process chip U
Pulse shaper, is serially connected in the low pass filtered between advance signal amplifying circuit and the IN pin processing chip U
Wave circuit, the data signal output circuit being connected with pulse shaper, and it is serially connected in process chip U
CM pin and data signal output circuit between full-bridge buffer circuit composition；Described process chip U's
VS pin connects external power source.
Described full-bridge buffer circuit is by amplifier P5, audion VT4, and audion VT5, positive pole is through resistance
After R27 the base stage with audion VT4 be connected, negative pole as full-bridge buffer circuit input and with process
Polar capacitor C14, the N pole that the CM pin of chip U is connected is connected with the colelctor electrode of audion VT4,
The diode D10 that P pole is sequentially connected through inductance L2 positive pole with amplifier P5 after resistance R33, just
Pole is connected with the junction point of inductance L2 with resistance R33, negative pole is connected with the outfan of amplifier P5
Polar capacitor C17, P pole negative pole with amplifier P5 after resistance R32 is connected, N pole is through adjustable resistance
The diode D11 that after R34, outfan with amplifier P5 is connected, the base stage phase of positive pole and audion VT5
The polar capacitor C16 that connection, negative pole are connected with the P pole of diode D11, one end is defeated with amplifier P5's
Go out the resistance R31 that end is connected, the other end is connected, positive pole and audion with the negative pole of polar capacitor C16
The colelctor electrode of VT5 is connected, polar capacitor C15, the P pole of minus earth is electric with polarity after resistance R28
Hold two poles that positive pole is connected, N pole negative pole with polar capacitor C15 after resistance R29 is connected of C14
Pipe D9, and one end is connected with the emitter stage of audion VT4, the transmitting of the other end and audion VT5
The resistance R30 composition that pole is connected；The P pole of described diode D11 is connected with the negative pole of polar capacitor C15
Connect；The minus earth of described polar capacitor C16；The outfan of described amplifier P5 is as full-bridge buffer circuit
Outfan and be connected with data signal output circuit.
Described low-pass filter circuit by amplifier P4, audion VT3, positive pole after resistance R19 with amplification
The positive pole of device P4 is connected, negative pole as low-pass filter circuit input and with advance signal amplifying circuit phase
The polar capacitor C10 connected, one end is connected with the negative pole of amplifier P4, the resistance R20 of other end ground connection,
P pole negative pole with amplifier P4 after resistance R21 is connected, N pole is sequentially through resistance R22 and resistance R24
With resistance R24's after the diode D6 that outfan with amplifier P4 is connected afterwards, negative pole and resistance R22
The polar capacitor C13 that junction point is connected, positive pole is connected with the base stage of audion VT3, negative pole is through adjustable
After resistance R23, the negative pole with polar capacitor C13 is connected, positive pole is connected with the P pole of diode D6
Polar capacitor C11, positive pole is connected with the outfan of amplifier P4, the IN of negative pole and process chip U pipe
Polar capacitor C12, the N pole that foot is connected is connected with the negative pole of polar capacitor C12, P pole and audion
The diode D7 that the colelctor electrode of VT3 is connected, and P pole after resistance R26 with polar capacitor C12's
The diode D8 group that negative pole is connected, N pole emitter stage with audion VT3 after resistance R25 is connected
Become；The grounded collector of described audion VT3.
Described advance signal amplifying circuit is by amplifier P1, and positive pole is connected with the positive pole of amplifier P1, bears
Pole as the polar capacitor C11 of the input of advance signal amplifying circuit, negative pole after resistance R1 with amplifier
The negative pole of P1 is connected, positive pole is sequentially connected through resistance R3 outfan with amplifier P1 after resistance R4
Polar capacitor C2, the P pole connect negative pole with polar capacitor C2 after resistance R2 is connected, N pole and resistance
The diode D1 that the junction point of R3 and resistance R4 is connected, and positive pole after resistance R5 with amplifier P1
Outfan be connected, the polar capacitor C3 of minus earth composition；The outfan conduct of described amplifier P1
The outfan of advance signal amplifying circuit is also connected with the negative pole of polar capacitor C10.
Described pulse shaper by audion VT1, audion VT2, N pole after resistance R8 with three poles
The colelctor electrode of pipe VT1 is connected, P pole is connected with the CC pin processing chip U after resistance R7 two
Pole pipe D2, negative pole is connected with the base stage of audion VT1, the COM pin phase of positive pole and process chip U
Connect polar capacitor C5, negative pole is connected with the emitter stage of audion VT2, positive pole after resistance R9 and
Processing the polar capacitor C6 that the OUT pin of chip U is connected, one end is connected with the positive pole of polar capacitor C6
Connect, resistance R10, P pole that the other end is connected with the PWM pin of process chip U is through adjustable resistance R15
Be connected with the colelctor electrode of audion VT2 afterwards, that N pole and the emitter stage of audion VT2 are collectively forming pulse is whole
The outfan of shape circuit the diode D5 being connected with data signal output circuit, and negative pole is through inductance L1
Colelctor electrode with audion VT1 is connected afterwards, positive pole P with diode D5 after resistance R16 is extremely connected
The polar capacitor C9 composition connect；The base stage of described audion VT2 is connected with the emitter stage of audion VT1.
Described data signal output circuit by amplifier P2, amplifier P3, P pole after resistance R14 with put
The diode that the positive pole of big device P2 is connected, N pole positive pole with amplifier P3 after resistance R12 is connected
D3, negative pole N pole with diode D3 after resistance R13 is connected, after positive electrode resistance R17 with amplifier
The polar capacitor C7 that the outfan of P2 is connected, positive pole is connected with the negative pole of amplifier P3, minus earth
Polar capacitor C8, and P pole is connected with the outfan of amplifier P3, N pole is through adjustable resistance R18
The diode D4 composition that outfan with amplifier P2 is connected afterwards；The N pole of described diode D3 with put
The outfan of big device P5 is connected；The minus earth of described amplifier P2, its positive pole are with audion VT2's
After emitter stage is connected, its outfan is connected with the N pole of diode D5 and as data signal output electricity
The outfan on road.
For the practical effect of the present invention, described process chip U the most preferentially uses the integrated chip of AD736
Realize.
The present invention compared with prior art, has the following advantages and beneficial effect:
(1) small-signal of temperature sensor output can be amplified by the present invention, and the present invention can make defeated
Go out signal and keep consistent with the waveform of input signal, thus improve the present invention accuracy to signal processing,
Effectively ensure that signal output waveform does not haves distortion.
(2) energy over-voltage suppression of the present invention and restriction voltage increase rate and formation electromagnetic interference, make telecommunications
Number more stable and accurately, thus improve the present invention accuracy to signal processing.
(3) being mixed by the anti-frequency in input signal of the present invention eliminates, and the present invention can also be by signal
Low-frequency disturbance is rejected, thus improves the present invention accuracy to signal processing, effectively ensure that output letter
Number waveform does not haves distortion.
(4) input signal can be converted to high-frequency signal or the low frequency signal of specific width by the present invention, makes signal
Signal wave more steady, thus improve the present invention accuracy to signal processing.
(5) the process chip of the present invention uses the integrated chip of AD736 to realize, and this process chip has stronger
Capacity of resisting disturbance, thus effectively ensure that the present invention accuracy to signal processing.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of the present invention.
Fig. 2 is the electrical block diagram of the low-pass filter circuit of the present invention.
Fig. 3 is the electrical block diagram of the full-bridge buffer circuit of the present invention.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing thereof, the present invention is described in further detail, but the enforcement of the present invention
Mode is not limited to this.
Embodiment
As it is shown in figure 1, the present invention is mainly by processing chip U, with process chip U's after positive electrode resistance R6
The polar capacitor that CF pin is connected, negative pole is connected with the CM pin processing chip U after resistance R11
C4, the advance signal amplifying circuit being connected with the IN pin processing chip U, it is connected with processing chip U
The pulse shaper connect, be serially connected between advance signal amplifying circuit and the IN pin processing chip U is low
Bandpass filter circuit, the data signal output circuit being connected with pulse shaper, and it is serially connected in process core
Full-bridge buffer circuit composition between CM pin and the data signal output circuit of sheet U；Described process chip
The VS pin of U connects external power source.
Wherein, described advance signal amplifying circuit by amplifier P1, resistance R1, resistance R2, resistance R3,
Resistance R4, resistance R5, polar capacitor C1, polar capacitor C2, polar capacitor C3, and diode D1
Composition.
During connection, the positive pole of polar capacitor C11 is connected with the positive pole of amplifier P1, its negative pole is as preposition
The input of signal amplification circuit is also connected with temperature sensor.The negative pole of polar capacitor C2 is through resistance R1
Afterwards the negative pole with amplifier P1 be connected, its positive pole sequentially after resistance R3 and resistance R4 with amplifier P1
Outfan be connected.The P pole of diode D1 negative pole with polar capacitor C2 after resistance R2 is connected,
Its N pole is connected with the junction point of resistance R3 with resistance R4.The positive pole of polar capacitor C3 is through resistance R5
Afterwards the outfan with amplifier P1 be connected, its minus earth.The outfan of described amplifier P1 is as front
Put the outfan of signal amplification circuit and be connected with the negative pole of polar capacitor C10.
Further, described pulse shaper is by audion VT1, audion VT2, resistance R7, electricity
Resistance R8, resistance R9, resistance R10, adjustable resistance R15, resistance R16, polar capacitor C5, polarity electricity
Hold C6, polar capacitor C9, diode D2, diode D5, and inductance L1 composition.
During connection, the N pole of diode D2 colelctor electrode with audion VT1 after resistance R8 is connected,
Its P pole is connected with the CC pin processing chip U after resistance R7.The negative pole of polar capacitor C5 and three
The base stage of pole pipe VT1 is connected, its positive pole is connected with the COM pin processing chip U.Polar capacitor
The negative pole of C6 is connected with the emitter stage of audion VT2, its positive pole after resistance R9 with process chip U
OUT pin is connected.One end of resistance R10 is connected with the positive pole of polar capacitor C6, its other end with
The PWM pin processing chip U is connected.
Meanwhile, the P pole of diode D5 colelctor electrode with audion VT2 after adjustable resistance R15 be connected,
Its N pole and the emitter stage of audion VT2 are collectively forming the outfan of pulse shaper defeated with data signal
Go out circuit to be connected.The negative pole of polar capacitor C9 colelctor electrode with audion VT1 after inductance L1 is connected,
Its positive pole P pole with diode D5 after resistance R16 is connected.The base stage and three of described audion VT2
The emitter stage of pole pipe VT1 is connected.
Further, described data signal output circuit by amplifier P2, amplifier P3, resistance R12,
Resistance R13, resistance R14, resistance R17, adjustable resistance R18, polar capacitor C7, polar capacitor C8,
Diode D3, and diode D4 composition.
During connection, the P pole of diode D3 positive pole with amplifier P2 after resistance R14 is connected, its N
Pole positive pole with amplifier P3 after resistance R12 is connected.The negative pole of polar capacitor C7 is after resistance R13
It is connected with the N pole of diode D3, is connected with the outfan of amplifier P2 after its positive electrode resistance R17.
The positive pole of polar capacitor C8 is connected with the negative pole of amplifier P3, its minus earth.The P of diode D4
Pole is connected with the outfan of amplifier P3, its N pole after adjustable resistance R18 with the output of amplifier P2
End is connected.
The N pole of described diode D3 is connected with the outfan of amplifier P5；Described amplifier P2's is negative
Pole ground connection, its positive pole are connected with the emitter stage of audion VT2, the N pole of its outfan and diode D5
After being connected and as the outfan of data signal output circuit.
As described in Figure 2, described low-pass filter circuit is by amplifier P4, audion VT3, resistance R19, electricity
Resistance R20, resistance R21, resistance R22, adjustable resistance R23, resistance R24, resistance R25, resistance R26,
Polar capacitor C10, polar capacitor C11, polar capacitor C12, polar capacitor C13, diode D6, two
Pole pipe D7, and diode D8 composition.
During connection, the positive pole of polar capacitor C10 positive pole with amplifier P4 after resistance R19 is connected, it
Negative pole as the input of low-pass filter circuit and is connected with advance signal amplifying circuit.The one of resistance R20
End is connected with the negative pole of amplifier P4, its other end ground connection.The P pole of diode D6 is after resistance R21
Be connected with the negative pole of amplifier P4, its N pole sequentially after resistance R22 and resistance R24 with amplifier P4
Outfan be connected.The negative pole of polar capacitor C13 is connected with junction point with resistance R24 after resistance R22
Connect, its positive pole is connected with the base stage of audion VT3.
Wherein, the negative pole of polar capacitor C11 negative pole with polar capacitor C13 after adjustable resistance R23 is connected
Connect, its positive pole is connected with the P pole of diode D6.The positive pole of polar capacitor C12 is defeated with amplifier P4's
Go out end be connected, its negative pole with process chip U IN pin be connected.
Meanwhile, the N pole of diode D7 be connected with the negative pole of polar capacitor C12, its P pole and audion
The colelctor electrode of VT3 is connected.The P pole of diode D8 after resistance R26 with the negative pole of polar capacitor C12
Be connected, its N pole emitter stage with audion VT3 after resistance R25 is connected.Described audion VT3
Grounded collector.
As it is shown on figure 3, described full-bridge buffer circuit is by amplifier P5, audion VT4, audion VT5,
Resistance R27, resistance R28, resistance R29, resistance R30, resistance R31, resistance R32, resistance R33,
Resistance R34, polar capacitor C14, polar capacitor C15, polar capacitor C16, polar capacitor C17, inductance
L2, diode D9, diode D10, and diode D11 form.
During connection, the positive pole of polar capacitor C14 base stage with audion VT4 after resistance R27 is connected,
Its negative pole as the input of full-bridge buffer circuit and is connected with the CM pin processing chip U.Diode
The N pole of D10 is connected with the colelctor electrode of audion VT4, its P pole is sequentially through inductance L2 and resistance R33
Positive pole with amplifier P5 is connected afterwards.The positive pole of polar capacitor C17 and the company of inductance L2 and resistance R33
Contact is connected, its negative pole is connected with the outfan of amplifier P5.
Meanwhile, the P pole of diode D11 negative pole with amplifier P5 after resistance R32 be connected, its N
Pole outfan with amplifier P5 after adjustable resistance R34 is connected.The positive pole of polar capacitor C16 and three poles
The base stage of pipe VT5 is connected, its negative pole is connected with the P pole of diode D11.One end of resistance R31 with
The outfan of amplifier P5 is connected, its other end is connected with the negative pole of polar capacitor C16.Polar capacitor
The positive pole of C15 is connected with the colelctor electrode of audion VT5, its minus earth.The P pole warp of diode D9
After resistance R28 the positive pole with polar capacitor C14 be connected, its N pole after resistance R29 with polar capacitor
The negative pole of C15 is connected.One end of resistance R30 is connected with the emitter stage of audion VT4, its other end
It is connected with the emitter stage of audion VT5.
The P pole of described diode D11 is connected with the negative pole of polar capacitor C15；Described polar capacitor C16
Minus earth；The outfan of described amplifier P5 as full-bridge buffer circuit outfan and and data signal
Output circuit is connected.
During operation, the small-signal of temperature sensor output can be amplified by the present invention, and the present invention can make
Output signal keeps consistent with the waveform of input signal, thus improves the present invention accuracy to signal processing,
Effectively ensure that signal output waveform does not haves distortion.On energy over-voltage suppression of the present invention and restriction voltage
Rise speed and form electromagnetic interference, making the signal of telecommunication more stable and accurate, thus improve the present invention to letter
Number process accuracy.
Meanwhile, the present invention can eliminate mixed for the anti-frequency in input signal, and the present invention can also be by signal
Low-frequency disturbance is rejected, thus improves the present invention accuracy to signal processing, effectively ensure that output letter
Number waveform does not haves distortion.Input signal can be converted to high-frequency signal or the low frequency of specific width by the present invention
Signal, the signal wave making signal is more steady, thus improves the present invention accuracy to signal processing.This
Bright process chip uses the integrated chip of AD736 to realize, and this process chip has stronger capacity of resisting disturbance,
Thus effectively ensure that the present invention accuracy to signal processing.
According to above-described embodiment, can well realize the present invention.
Claims (7)
1. an electronic thermostat signal processing system based on advance signal amplifying circuit, its feature exists
In, mainly by process chip U, after positive electrode resistance R6 with process chip U CF pin be connected, negative pole
The polar capacitor C4 being connected with the CM pin processing chip U after resistance R11, with process chip U
The advance signal amplifying circuit that is connected of IN pin, and process the pulse shaper that chip U is connected,
It is serially connected in the low-pass filter circuit between advance signal amplifying circuit and the IN pin processing chip U, with pulse
The data signal output circuit that shaping circuit is connected, and it is serially connected in CM pin and the number processing chip U
Form according to the full-bridge buffer circuit between signal output apparatus；The VS pin of described process chip U connects outside
Power supply.
A kind of electronic thermostat based on advance signal amplifying circuit the most according to claim 1 is believed
Number processing system, it is characterised in that described full-bridge buffer circuit is by amplifier P5, audion VT4, three poles
Pipe VT5, positive pole base stage with audion VT4 after resistance R27 is connected, negative pole is as full-bridge buffering electricity
The input on road polar capacitor C14, the N pole being connected with the CM pin processing chip U and audion
The colelctor electrode of VT4 is connected, P pole sequentially after inductance L2 and resistance R33 with the positive pole phase of amplifier P5
The diode D10 connected, positive pole is connected with the junction point of inductance L2 with resistance R33, negative pole and amplifier
Polar capacitor C17, the P pole that the outfan of P5 is connected negative pole with amplifier P5 after resistance R32 is connected
Connect, diode D11 that N pole outfan with amplifier P5 after adjustable resistance R34 is connected, positive pole with
The polar capacitor C16 that the base stage of audion VT5 is connected, negative pole is connected with the P pole of diode D11,
The resistance that one end is connected with the outfan of amplifier P5, the other end is connected with the negative pole of polar capacitor C16
R31, positive pole is connected with the colelctor electrode of audion VT5, polar capacitor C15, the P pole of minus earth is through electricity
Resistance R28 after be connected with the positive pole of polar capacitor C14, N pole after resistance R29 with polar capacitor C15's
The diode D9 that negative pole is connected, and one end is connected with the emitter stage of audion VT4, the other end and three
The resistance R30 composition that the emitter stage of pole pipe VT5 is connected；The P pole of described diode D11 and polar capacitor
The negative pole of C15 is connected；The minus earth of described polar capacitor C16；The outfan of described amplifier P5 is made
For the outfan of full-bridge buffer circuit and it is connected with data signal output circuit.
A kind of electronic thermostat based on advance signal amplifying circuit the most according to claim 2 is believed
Number processing system, it is characterised in that described low-pass filter circuit is by amplifier P4, audion VT3, positive pole
After resistance R19 the positive pole with amplifier P4 be connected, negative pole as low-pass filter circuit input and with
The polar capacitor C10 that advance signal amplifying circuit is connected, one end is connected with the negative pole of amplifier P4, separately
Resistance R20, the P pole of one end ground connection negative pole with amplifier P4 after resistance R21 is connected, N pole sequentially
Through the diode D6 that resistance R22 outfan with amplifier P4 after resistance R24 is connected, negative pole and electricity
Be connected with the junction point of resistance R24 after resistance R22, polarity that positive pole is connected with the base stage of audion VT3
Electric capacity C13, negative pole negative pole with polar capacitor C13 after adjustable resistance R23 is connected, positive pole and two poles
The polar capacitor C11 that the P pole of pipe D6 is connected, positive pole is connected with the outfan of amplifier P4, negative pole
Negative pole phase with polar capacitor C12, the N pole that is connected of IN pin processing chip U with polar capacitor C12
The diode D7 that connection, P pole are connected with the colelctor electrode of audion VT3, and P pole is through resistance R26
Afterwards the negative pole with polar capacitor C12 be connected, N pole after resistance R25 with the emitter stage phase of audion VT3
The diode D8 composition connected；The grounded collector of described audion VT3.
A kind of electronic thermostat based on advance signal amplifying circuit the most according to claim 3 is believed
Number processing system, it is characterised in that described advance signal amplifying circuit is by amplifier P1, positive pole and amplifier
The positive pole of P1 is connected, negative pole is as the polar capacitor C11 of the input of advance signal amplifying circuit, negative pole
After resistance R1 the negative pole with amplifier P1 be connected, positive pole sequentially after resistance R3 and resistance R4 with put
Polar capacitor C2, the P pole that the outfan of big device P1 is connected negative with polar capacitor C2 after resistance R2
The diode D1 that pole is connected, N pole is connected with the junction point of resistance R3 with resistance R4, and positive pole warp
After resistance R5, the outfan with amplifier P1 is connected, the polar capacitor C3 of minus earth forms；Described put
The outfan of big device P1 as the outfan of advance signal amplifying circuit and is connected with the negative pole of polar capacitor C10
Connect.
A kind of electronic thermostat based on advance signal amplifying circuit the most according to claim 4 is believed
Number processing system, it is characterised in that described pulse shaper is by audion VT1, audion VT2, N
Pole colelctor electrode with audion VT1 after resistance R8 is connected, P pole after resistance R7 with process chip U
The diode D2 that is connected of CC pin, negative pole is connected with the base stage of audion VT1, positive pole and process
The polar capacitor C5 that the COM pin of chip U is connected, negative pole is connected with the emitter stage of audion VT2,
The polar capacitor C6 that positive pole is connected with the OUT pin processing chip U after resistance R9, one end and polarity
The resistance R10 that the positive pole of electric capacity C6 is connected, the other end is connected with the PWM pin of process chip U,
P pole colelctor electrode with audion VT2 after adjustable resistance R15 is connected, N pole is sent out with audion VT2's
Outfan that emitter-base bandgap grading is collectively forming pulse shaper the diode being connected with data signal output circuit
D5, and negative pole colelctor electrode with audion VT1 after inductance L1 is connected, positive pole is after resistance R16
The polar capacitor C9 composition being connected with the P pole of diode D5；The base stage of described audion VT2 and three poles
The emitter stage of pipe VT1 is connected.
A kind of electronic thermostat based on advance signal amplifying circuit the most according to claim 5 is believed
Number processing system, it is characterised in that described data signal output circuit is by amplifier P2, amplifier P3, P
Pole positive pole with amplifier P2 after resistance R14 is connected, N pole after resistance R12 with amplifier P3's
The diode D3 that positive pole is connected, negative pole N pole with diode D3 after resistance R13 is connected, positive pole
The polar capacitor C7 that after resistance R17, outfan with amplifier P2 is connected, positive pole is negative with amplifier P3's
Pole is connected, the polar capacitor C8 of minus earth, and P pole is connected with the outfan of amplifier P3, N
The diode D4 composition that pole outfan with amplifier P2 after adjustable resistance R18 is connected；Described two poles
The N pole of pipe D3 is connected with the outfan of amplifier P5；The minus earth of described amplifier P2, its just
After pole is connected with the emitter stage of audion VT2, its outfan is connected with the N pole of diode D5 and make
Outfan for data signal output circuit.
A kind of electronic thermostat based on advance signal amplifying circuit the most according to claim 6 is believed
Number processing system, it is characterised in that described process chip U is the integrated chip of AD736.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451978.9A CN105974957A (en) | 2016-06-21 | 2016-06-21 | Signal processing system for electronic temperature controller based on frontend signal amplifying circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610451978.9A CN105974957A (en) | 2016-06-21 | 2016-06-21 | Signal processing system for electronic temperature controller based on frontend signal amplifying circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105974957A true CN105974957A (en) | 2016-09-28 |
Family
ID=57021572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610451978.9A Pending CN105974957A (en) | 2016-06-21 | 2016-06-21 | Signal processing system for electronic temperature controller based on frontend signal amplifying circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105974957A (en) |
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2016
- 2016-06-21 CN CN201610451978.9A patent/CN105974957A/en active Pending
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Application publication date: 20160928 |