CN106404193A - Source-follower-circuit-based signal amplification type remote temperature monitoring system for barton - Google Patents
Source-follower-circuit-based signal amplification type remote temperature monitoring system for barton Download PDFInfo
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- CN106404193A CN106404193A CN201610887883.1A CN201610887883A CN106404193A CN 106404193 A CN106404193 A CN 106404193A CN 201610887883 A CN201610887883 A CN 201610887883A CN 106404193 A CN106404193 A CN 106404193A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/024—Means for indicating or recording specially adapted for thermometers for remote indication
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
- G01K1/028—Means for indicating or recording specially adapted for thermometers arrangements for numerical indication
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Abstract
The invention discloses a source-follower-circuit-based signal amplification type remote temperature monitoring system for a barton. The system is composed of a microcontroller, a GPRS wireless transmission module, a signal transmission processing module, an analog-to-digital conversion module connected with the signal transmission processing module, and a temperature sensor connected with the analog-to-digital conversion module, wherein the GPRS wireless transmission module and the signal transmission processing module are connected with the microcontroller. The signal transmission processing module can filter a low-frequency interference signal and a high-frequency interference signal in detected signals to eliminate the influence of the interference signals, so that the detected signals transmitted to a mobile terminal by a wireless network becomes accurate. And the detected signals are amplified to enhance the strength of the detected signals, thereby overcome a defect of reduction of the detected signals due to long-distance transmission. Therefore, a farmer can obtain the temperature situation in a barton accurately and can adjust the temperature timely and accurately, so that thickens can grow healthily.
Description
Technical field
The present invention relates to home poultry raising field, specifically refer to a kind of based on the hen house of source follower signal amplifying type
Remote temperature monitoring system.
Background technology
Chicken contacts and environment between in every way in growth course and influences each other, and wherein, temperature is to chicken
Grow and health has extremely close relationship.People need to understand the temperature in hen house in real time during poultry
Situation, is timely adjusted to the temperature of hen house when too high or too low for temperature.In order to anywhere or anytime to hen house temperature
Degree is monitored, and current raiser is generally monitored to the temperature in hen house using remote temperature monitoring system, and according to prison
Survey result timely the temperature in hen house to be adjusted.However, existing remote temperature monitoring system can not be well to prison
The interference signal surveyed in signal is processed, so that the temperature information that raiser receives is inaccurate, leads to the raiser cannot
Accurately the temperature in hen house is adjusted, the health of impact chicken.
Content of the invention
It is an object of the invention to overcoming the existing remote temperature monitoring system can not be well to dry in monitoring signals
Disturb the defect that signal is processed, a kind of signal amplifying type remote temperature monitoring of the hen house based on source follower system is provided
System.
The purpose of the present invention is achieved through the following technical solutions：Hen house based on source follower is remote with signal amplifying type
Journey temperature monitoring system, mainly by microcontroller, the GPRS wireless transport module being connected with microcontroller respectively and signal are passed
Defeated processing module, the analog-to-digital conversion module being connected with process of signal transmission module, the temperature being connected with analog-to-digital conversion module
Sensor, and the mobile terminal composition being connected with GPRS wireless transport module by wireless network；At described signal transmission
, by amplifier P3, amplifier P4, amplifier P5, triode VT2, bias amplifier, negative pole is defeated with amplifier P3's for reason module
Go out the electric capacity C6 that end is connected, positive pole is connected with the base stage of triode VT2, negative pole is connected with the negative pole of electric capacity C6, positive pole
The electric capacity C7 being connected with the colelctor electrode of triode VT2, the negative pole sequentially negative pole phase with electric capacity C6 after resistance R5 and resistance R4
Connect, the electric capacity C9 that is connected with the positive pole of amplifier P4 of positive pole, positive pole is connected with the colelctor electrode of triode VT2, negative pole and
The electric capacity C8 that the negative pole of electric capacity C9 is connected, negative pole is connected with the output end of amplifier P4, positive pole and bias amplifier phase
The electric capacity C10 connecting, the electricity that plus earth, negative pole are sequentially connected with the negative pole of electric capacity C10 after resistance R6 through potentiometer R7
Hold C11, the source follower being connected with the positive pole of amplifier P3, the high-pass filtering electricity being connected with source follower
Road, and the low-pass filter circuit composition being connected with high-pass filtering circuit；The output end of described amplifier P5 is with electric capacity C9's
Negative pole is connected, its negative pole is connected with its output end, its positive pole is then connected with the control end of potentiometer R7；Described amplifier
The negative pole of P4 is connected with its output end；The negative pole of described amplifier P3 is connected with its output end；Described low-pass filter circuit
Input be connected with analog-to-digital conversion module, the output end of described bias amplifier is connected with microcontroller.
Further, by FET MOS, triode VT6, positive pole is with FET MOS's for described source follower
The electric capacity C15 that grid is connected, negative pole is connected with high-pass filtering circuit, one end is connected with the positive pole of electric capacity C15, the other end
Meet the resistance R14 of power supply, the electric capacity C16 that negative pole is connected with the positive pole of electric capacity C15, positive pole is grounded after resistance R15, negative pole with
The source electrode of FET MOS is connected, positive pole is connected with the colelctor electrode of triode VT6 electric capacity C17, negative pole and triode
The emitter stage of VT6 is connected, the electric capacity C18 of plus earth, and P pole is connected with the positive pole of electric capacity C18, N pole is sequentially through resistance R18
With the Zener diode D6 being connected with the base stage of triode VT6 after resistance R16, N pole is connected with the drain electrode of FET MOS
Connect, diode D7 that P pole is connected with the tie point of resistance R16 and resistance R18 after resistance R17, and P pole and electric capacity C17
Positive pole be connected, diode D5 that N pole is connected with the positive pole of amplifier P3 composition.
Described bias amplifier by triode VT3, triode VT4, triode VT5, the positive pole phase of negative pole and electric capacity C10
The electric capacity C12 that connection, positive pole are connected with the base stage of triode VT3, N pole is connected with the base stage of triode VT3, P pole ground connection
Diode D3, be serially connected in resistance R12, one end and the triode between the P pole of diode D3 and the emitter stage of triode VT3
The emitter stage of VT4 is connected, the other end ground connection resistance R13, negative pole is connected with the emitter stage of triode VT4, positive pole with micro-
The electric capacity C14 that controller is connected, positive pole is connected with the colelctor electrode of triode VT3, negative pole after diode D4 with triode
The electric capacity C13 that the base stage of VT5 is connected, is serially connected in the resistance R9 between the base stage of triode VT5 and colelctor electrode, one end and three poles
The resistance R10 that the emitter stage of pipe VT5 is connected, the other end is connected with the colelctor electrode of triode VT4 after resistance R11, and
The resistance R8 group that one end is connected with the base stage of triode VT3, the other end is connected with the tie point of resistance R10 and resistance R11
Become；The colelctor electrode of described triode VT3 is connected with the base stage of triode VT4；The colelctor electrode of described triode VT5 connects power supply.
By amplifier P2, positive pole is connected described high-pass filtering circuit with the positive pole of amplifier P2, negative pole and amplifier P2
The electric capacity C4 that is connected of output end, negative pole is connected with the negative pole of amplifier P2, positive pole is connected with the output end of amplifier P2
The electric capacity C5 connecing, one end is connected with the positive pole of amplifier P2, the resistance R3 of other end ground connection, and negative pole is with amplifier P2's
The electric capacity C3 composition that positive pole is connected, positive pole is connected with low-pass filter circuit；The output end of described amplifier P2 and electric capacity C15
Negative pole be connected.
Described low-pass filter circuit is by amplifier P1, triode VT1, N pole positive pole phase with amplifier P1 after resistance R1
Connect, the diode D1 that is connected with analog-to-digital conversion module of P pole, positive pole is connected with the N pole of diode D1, negative pole and amplifier
The electric capacity C1 that the output end of P1 is connected, is serially connected in the resistance R2 between the negative pole of amplifier P1 and output end, and positive pole with
The electric capacity C2 composition that the negative pole of amplifier P1 is connected, negative pole is connected with the base stage of triode VT1；Described triode VT1's
Colelctor electrode is connected with the output end of amplifier P1, grounded emitter；The output end of described amplifier P1 and the positive pole of electric capacity C3
It is connected.
Described amplifier P1～P5 is TL061 type amplifier.
The present invention compared with the prior art, has advantages below and beneficial effect：
(1) the process of signal transmission module of the present invention can filter to the interference signal in detection signal, and exclusion is dry
Disturb the impact of signal so that by wireless network be sent to mobile terminal detection signal more accurate, raiser can be accurate
The temperature conditions understanding in hen house, and timely, accurate adjustment is carried out to temperature, is beneficial to growing up healthy and sound of chicken.
(2) the process of signal transmission module of the present invention can be amplified to detection signal processing, and strengthens detection signal
Increasing degree, such that it is able to make up the weakening that detection signal produces because of long range propagation.
Brief description
Fig. 1 is the overall structure figure of the present invention.
Fig. 2 is the structure chart of the process of signal transmission module of the present invention.
Fig. 3 is the structure chart of the source follower of the present invention.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to
This.
Embodiment
As shown in figure 1, the present invention is mainly by microcontroller, process of signal transmission module, analog-to-digital conversion module, TEMP
Device, GPRS wireless transport module and mobile terminal composition.
This temperature sensor is arranged in hen house, for gathering the temperature in hen house and exporting corresponding analog signal to mould
Number modular converter, it is real that it adopts the FST600-101 type temperature sensor that Hunan Fierst sensor Co., Ltd produces
Existing.The analog signal that this analog-to-digital conversion module is used for exporting temperature sensor is converted to data signal and exports to signal transmission
Reason module, this analog-to-digital conversion module to be realized using AD7810 modulus conversion chip, the VIN+ of this AD7810 modulus conversion chip
Pin is connected with the signal output interface of temperature sensor with VIN- pin, its DOUT pin then with process of signal transmission module
Input be connected.
As the processing center of the present invention, it is carried out this microcontroller to the detection signal of process of signal transmission module output
It is sent to GPRS wireless transport module after coding；This microcontroller to be realized using AT89S51 single-chip microcomputer, this AT89S51 monolithic
The P1.0I/O interface of machine is connected with the output end of process of signal transmission module, and its P2.1I/O interface is then wirelessly transferred with GPRS
The signal input interface of module is connected.This GPRS wireless transport module is connected with mobile terminal by wireless network, and it can
So that detection signal is sent to mobile terminal by wireless network, it adopts KELINK-2010 wireless transport module to realize.Should
Mobile terminal is then mobile phone or computer, and raiser can understand the temperature conditions in hen house in real time by mobile phone or computer.
During work, temperature sensor gathers the real time temperature signal in hen house, and exports corresponding analog signal to modulus
Modular converter.This analog-to-digital conversion module is transferred to process of signal transmission module, signal after converting analog signals into data signal
Transmission process module is transferred to microcontroller after being processed data signal.After this microcontroller is to encoding digital signals
It is sent to GPRS wireless transport module, this GPRS wireless transport module then sends a signal to mobile terminal by wireless network.
In order to preferably process to detection signal, as shown in Fig. 2 described process of signal transmission module is by amplifier
P3, amplifier P4, amplifier P5, triode VT2, bias amplifier, negative pole is connected with the output end of amplifier P3, positive pole
The electric capacity C6 being connected with the base stage of triode VT2, negative pole is connected with the negative pole of electric capacity C6, the collection of positive pole and triode VT2
The electric capacity C7 that electrode is connected, negative pole is sequentially connected with the negative pole of electric capacity C6 after resistance R4 through resistance R5, positive pole and amplification
The electric capacity C9 that the positive pole of device P4 is connected, positive pole is connected with the colelctor electrode of triode VT2, negative pole is connected with the negative pole of electric capacity C9
The electric capacity C8 connecing, the electric capacity C10 that negative pole is connected with the output end of amplifier P4, positive pole is connected with bias amplifier, just
The electric capacity C11 that pole ground connection, negative pole are sequentially connected with the negative pole of electric capacity C10 after resistance R6 through potentiometer R7, with amplifier P3
The source follower that is connected of positive pole, the high-pass filtering circuit being connected with source follower, and and high-pass filtering
The low-pass filter circuit composition that circuit is connected；The output end of described amplifier P5 is connected with the negative pole of electric capacity C9, its negative pole
It is connected with its output end, its positive pole is then connected with the control end of potentiometer R7；The negative pole of described amplifier P4 is exported with it
End is connected；The negative pole of described amplifier P3 is connected with its output end；The input of described low-pass filter circuit and modulus turn
Die change block is connected, and the output end of described bias amplifier is connected with microcontroller.
Wherein, this amplifier P4, amplifier P5, resistance R6, potentiometer R7, electric capacity C9, electric capacity C8, electric capacity C7, electric capacity C6,
Triode VT2, resistance R4 and resistance R5 are collectively forming a trap circuit, and this trap circuit can be to signals collecting and transmission
During Hz noise filtered, make detection signal more stable during transmission and process, improve mobile terminal
The accuracy of the detection signal receiving.This amplifier P3～P5 is all using TL061 type amplifier, this amplifier P5, resistance R6
And potentiometer R7 then constitutes the positive-feedback circuit of amplifier P4, this positive-feedback circuit is used for carrying out impedance conversion.This triode
Model 3DG6 of VT2, the capacitance of this electric capacity C6～C9 is 0.047 μ F, and the capacitance of electric capacity C10 and electric capacity C11 is 0.1 μ
F, model 1N4001 of diode D2, the resistance of resistance R4～R6 is 15K Ω, and the maximum value of potentiometer R7 is 2K Ω.
This high-pass filtering circuit is made up of amplifier P2, electric capacity C3, electric capacity C4, electric capacity C5 and resistance R3.Wherein, this electricity
The positive pole holding C4 is connected with the positive pole of amplifier P2, and negative pole is connected with the output end of amplifier P2.The negative pole of electric capacity C5 with
The negative pole of amplifier P2 is connected, and positive pole is connected with the output end of amplifier P2.One end of resistance R3 is with amplifier P2 just
Pole is connected, and the other end is grounded.The negative pole of electric capacity C3 is connected with the positive pole of amplifier P2, and positive pole is connected with low-pass filter circuit
Connect.The output end of described amplifier P2 is connected with source follower.
This amplifier P2, electric capacity C4 and electric capacity C5 collectively form a high-pass filter；From low-pass filter circuit output
Detection signal be input to high-pass filter after electric capacity C3, by high-pass filter to the High-frequency Interference being entrained in detection signal
Signal is filtered.Model TL061 of this amplifier P2, the capacitance of electric capacity C4 and electric capacity C5 is 10 μ F, this high-pass filtering
The cut-off frequency of device is 100HZ.The capacitance of this electric capacity C3 is 0.1 μ F, and the resistance of resistance R3 is then 22K Ω.
In addition, this low-pass filter circuit is by amplifier P1, triode VT1, resistance R1, resistance R2, electric capacity C1, electric capacity C2 with
And diode D1 composition.
During connection, the N pole of diode D1 is connected with the positive pole of amplifier P1 after resistance R1, P pole and analog-to-digital conversion mould
Block is connected.The positive pole of electric capacity C1 is connected with the N pole of diode D1, and negative pole is connected with the output end of amplifier P1.Resistance
R2 is serially connected between negative pole and the output end of amplifier P1.Electric capacity C2 positive pole is connected with the negative pole of amplifier P1, negative pole and three
The base stage of pole pipe VT1 is connected.The colelctor electrode of described triode VT1 is connected with the output end of amplifier P1, grounded emitter.
The output end of described amplifier P1 is connected with the positive pole of electric capacity C3.
This amplifier P1, triode VT1, electric capacity C1, electric capacity C2, resistance R1 and resistance R2 are collectively forming a low pass filtered
Ripple device, this low pass filter can filter to the low-frequency interference signal being entrained in detection signal.The type of this amplifier P1
Number it is TL061, the model of triode VT1 is then 3DG6, and the capacitance of this electric capacity C1 and electric capacity C2 is 0.047 μ F, resistance R1's
Resistance is 10K Ω, and the resistance of resistance R2 is then 24K Ω, and the cut-off frequency of this low pass filter is 0.05HZ.This diode D1's
Model 1N4001.
This bias amplifier by triode VT3, triode VT4, triode VT5, resistance R8, resistance R9, resistance R10,
Resistance R11, resistance R12, resistance R13, diode D3, diode D4, electric capacity C12, electric capacity C13 and electric capacity C14 form.
During connection, the negative pole of electric capacity C12 is connected with the positive pole of electric capacity C10, and positive pole is connected with the base stage of triode VT3
Connect.The N pole of diode D3 is connected with the base stage of triode VT3, and P pole is grounded.Resistance R12 be serially connected in diode D3 P pole and
Between the emitter stage of triode VT3.One end of resistance R13 is connected with the emitter stage of triode VT4, and the other end is grounded.Electric capacity
The negative pole of C14 is connected with the emitter stage of triode VT4, and positive pole is connected with the P1.0I/O interface of microcontroller.Electric capacity C13
Positive pole be connected with the colelctor electrode of triode VT3, negative pole is connected with the base stage of triode VT5 after diode D4.Resistance
R9 is serially connected between base stage and the colelctor electrode of triode VT5.One end of resistance R10 is connected with the emitter stage of triode VT5, separately
One end is connected with the colelctor electrode of triode VT4 after resistance R11.One end of resistance R8 is connected with the base stage of triode VT3,
The other end is connected with the tie point of resistance R10 and resistance R11.The colelctor electrode of described triode VT3 and the base stage of triode VT4
It is connected.The colelctor electrode of described triode VT5 connects 9V power supply.
Wherein, triode VT5, resistance R9, resistance R10, resistance R11, diode D4 and electric capacity C13 collectively constitute biasing
Circuit；This biasing circuit can export stable bias current.This triode VT3, triode VT4 and electric capacity C14 then form
One amplifier；The detection signal of amplifier P4 output is input to amplifier, by amplifier pair after electric capacity C10 and electric capacity C12
Detection signal is amplified, and is conveyed to microcontroller, because this amplifier has stable bias current, this amplifier described
With distortionless, detection signal can be amplified, improve the intensity of detection signal.This triode VT3～VT5 all adopts
2N3053 type triode, the model of diode D3 and diode D4 is 1N4001, and the capacitance of this electric capacity C12 is 47 μ F, electric capacity
The capacitance of C13 and electric capacity C14 is 100 μ F, and the resistance of resistance R8 is 5.6K Ω, and the resistance of resistance R12 and resistance R13 is
22K Ω, the resistance of resistance R10 and resistance R11 is 3.3K Ω, and the resistance of resistance R9 is 490 Ω.
As shown in figure 3, this source follower is by FET MOS, triode VT6, resistance R14, resistance R15, resistance
R16, resistance R17, resistance R18, electric capacity C15, electric capacity C16, electric capacity C17, electric capacity C18, diode D5, Zener diode D6 and
Diode D7 forms.
During connection, the positive pole of electric capacity C15 is connected with the grid of FET MOS, the output end of negative pole and amplifier P2
It is connected.One end of resistance R14 is connected with the positive pole of electric capacity C15, another termination 9V.The negative pole of electric capacity C16 is with electric capacity C15's
Positive pole is connected, and positive pole is grounded after resistance R15.The negative pole of electric capacity C17 is connected with the source electrode of FET MOS, positive pole with
The colelctor electrode of triode VT6 is connected.The negative pole of electric capacity C18 is connected with the emitter stage of triode VT6, plus earth.Voltage stabilizing
The P pole of diode D6 is connected with the positive pole of electric capacity C18, the N pole sequentially base with triode VT6 after resistance R18 and resistance R16
Pole is connected.The N pole of diode D7 is connected with the drain electrode of FET MOS, P pole after resistance R17 with resistance R16 and resistance
The tie point of R18 is connected.The P pole of diode D5 is connected with the positive pole of electric capacity C17, and N pole is connected with the positive pole of amplifier P3
Connect.
Wherein, this FET MOS constitutes source follower；This triode VT6, electric capacity C18, Zener diode D6, electricity
Resistance R18, resistance R17 and diode D7 then constitute a constant-current circuit, ensure that the stability of source follower.This
Effect pipe MOS adopts 2SK15 type FET, and triode VT6 then adopts 2SC400 type triode, the capacitance of electric capacity C15～C18
Be 0.1 μ F, the resistance of this resistance R14 and resistance R15 is 100K Ω, and the resistance of resistance R16 is 1.2K Ω, resistance R17 and
The resistance of resistance R18 is 18K Ω, and the model of diode D5～D7 is 1N4001.This source follower can be to detection
The frequency of signal is adjusted, its output detection signal more stable so that subsequent conditioning circuit preferably to detection signal at
Reason.
This process of signal transmission module can be carried out to the low-frequency interference signal in detection signal and high-frequency interferencing signal
Filter, the impact excluding the interference signal so that by wireless network be sent to mobile terminal detection signal more accurate；And to inspection
Survey signal to be amplified, strengthen the increasing degree of detection signal, to make up the weakening that detection signal produces because of long range propagation；So
Raiser can accurately understand the temperature conditions in hen house, and temperature is carried out with timely, accurate adjustment, is beneficial to the strong of chicken
Kang Chengchang.
As described above, the present invention just can be realized well.
Claims (6)
1. the hen house based on source follower with signal amplifying type remote temperature monitoring system it is characterised in that main by micro-
Controller, the GPRS wireless transport module being connected with microcontroller respectively and process of signal transmission module, at signal transmission
The analog-to-digital conversion module that reason module is connected, the temperature sensor being connected with analog-to-digital conversion module, and pass through wireless network
The mobile terminal composition being connected with GPRS wireless transport module；Described process of signal transmission module is by amplifier P3, amplifier
P4, amplifier P5, triode VT2, bias amplifier, negative pole is connected with the output end of amplifier P3, positive pole and triode
The electric capacity C6 that the base stage of VT2 is connected, negative pole is connected with the negative pole of electric capacity C6, positive pole is connected with the colelctor electrode of triode VT2
The electric capacity C7 connecing, negative pole is sequentially connected with the negative pole of electric capacity C6 after resistance R4 through resistance R5, positive pole and amplifier P4 just
The electric capacity C9 that pole is connected, the electric capacity that positive pole is connected with the colelctor electrode of triode VT2, negative pole is connected with the negative pole of electric capacity C9
C8, the electric capacity C10 that negative pole is connected with the output end of amplifier P4, positive pole is connected with bias amplifier, plus earth, negative
The electric capacity C11 that pole is sequentially connected with the negative pole of electric capacity C10 after resistance R6 through potentiometer R7, is connected with the positive pole of amplifier P3
The source follower connecing, the high-pass filtering circuit being connected with source follower, and be connected with high-pass filtering circuit
Low-pass filter circuit composition；The output end of described amplifier P5 is connected with the negative pole of electric capacity C9, its negative pole and its output end
It is connected, its positive pole is then connected with the control end of potentiometer R7；The negative pole of described amplifier P4 is connected with its output end；Institute
The negative pole stating amplifier P3 is connected with its output end；The input of described low-pass filter circuit is connected with analog-to-digital conversion module
Connect, the output end of described bias amplifier is connected with microcontroller.
2. the hen house based on source follower according to claim 1 signal amplifying type remote temperature monitoring system,
It is characterized in that, described source follower by FET MOS, triode VT6, the grid phase of positive pole and FET MOS
The electric capacity C15 that connection, negative pole are connected with high-pass filtering circuit, one end is connected with the positive pole of electric capacity C15, another termination power
Resistance R14, negative pole is connected with the positive pole of electric capacity C15, positive pole is grounded after resistance R15 electric capacity C16, negative pole and field-effect
The electric capacity C17 that the source electrode of pipe MOS is connected, positive pole is connected with the colelctor electrode of triode VT6, negative pole is sent out with triode VT6's
Emitter-base bandgap grading is connected, the electric capacity C18 of plus earth, and P pole is connected with the positive pole of electric capacity C18, N pole is sequentially through resistance R18 and resistance
The Zener diode D6 being connected with the base stage of triode VT6 after R16, N pole is connected with the drain electrode of FET MOS, P pole warp
The diode D7 being connected with the tie point of resistance R16 and resistance R18 after resistance R17, and the positive pole phase of P pole and electric capacity C17
The diode D5 composition that connection, N pole are connected with the positive pole of amplifier P3.
3. the hen house based on source follower according to claim 2 signal amplifying type remote temperature monitoring system,
It is characterized in that, by triode VT3, triode VT4, triode VT5, negative pole is with electric capacity C10 just for described bias amplifier
The electric capacity C12 that pole is connected, positive pole is connected with the base stage of triode VT3, N pole is connected with the base stage of triode VT3, P pole
The diode D3 of ground connection, is serially connected in the resistance R12 between the P pole of diode D3 and the emitter stage of triode VT3, one end and three poles
The emitter stage of pipe VT4 is connected, the other end ground connection resistance R13, negative pole is connected with the emitter stage of triode VT4, positive pole and
The electric capacity C14 that microcontroller is connected, positive pole is connected with the colelctor electrode of triode VT3, negative pole after diode D4 with three poles
The electric capacity C13 that the base stage of pipe VT5 is connected, is serially connected in the resistance R9 between the base stage of triode VT5 and colelctor electrode, one end and three
The resistance R10 that the emitter stage of pole pipe VT5 is connected, the other end is connected with the colelctor electrode of triode VT4 after resistance R11, with
And the resistance R8 that one end is connected with the base stage of triode VT3, the other end is connected with the tie point of resistance R10 and resistance R11
Composition；The colelctor electrode of described triode VT3 is connected with the base stage of triode VT4；The colelctor electrode of described triode VT5 connects electricity
Source.
4. the hen house based on source follower according to claim 3 signal amplifying type remote temperature monitoring system,
It is characterized in that, by amplifier P2, positive pole is connected described high-pass filtering circuit with the positive pole of amplifier P2, negative pole and amplifier
The electric capacity C4 that the output end of P2 is connected, negative pole is connected with the negative pole of amplifier P2, the output end phase of positive pole and amplifier P2
The electric capacity C5 connecting, one end is connected with the positive pole of amplifier P2, the resistance R3 of other end ground connection, and negative pole and amplifier P2
Positive pole be connected, electric capacity C3 that positive pole is connected with low-pass filter circuit composition；The output end of described amplifier P2 and electric capacity
The negative pole of C15 is connected.
5. the hen house based on source follower according to claim 4 signal amplifying type remote temperature monitoring system,
It is characterized in that, described low-pass filter circuit is by amplifier P1, triode VT1, N pole positive pole with amplifier P1 after resistance R1
Be connected, diode D1 that P pole is connected with analog-to-digital conversion module, positive pole is connected with the N pole of diode D1, negative pole and amplification
The electric capacity C1 that the output end of device P1 is connected, is serially connected in the resistance R2 between the negative pole of amplifier P1 and output end, and positive pole
Be connected with the negative pole of amplifier P1, electric capacity C2 that negative pole is connected with the base stage of triode VT1 composition；Described triode VT1
Colelctor electrode be connected with the output end of amplifier P1, grounded emitter；The output end of described amplifier P1 is with electric capacity C3 just
Pole is connected.
6. the hen house based on source follower according to claim 5 signal amplifying type remote temperature monitoring system,
It is characterized in that, described amplifier P1～P5 is TL061 type amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887883.1A CN106404193A (en) | 2016-10-11 | 2016-10-11 | Source-follower-circuit-based signal amplification type remote temperature monitoring system for barton |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887883.1A CN106404193A (en) | 2016-10-11 | 2016-10-11 | Source-follower-circuit-based signal amplification type remote temperature monitoring system for barton |
Publications (1)
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| CN106404193A true CN106404193A (en) | 2017-02-15 |
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| CN103490766A (en) * | 2013-08-29 | 2014-01-01 | 苏州苏尔达信息科技有限公司 | High-speed high-precision source electrode follower circuit |
| CN203502819U (en) * | 2013-10-26 | 2014-03-26 | 付廷斌 | Hen house control system |
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| CN105897264A (en) * | 2016-05-11 | 2016-08-24 | 英特格灵芯片(天津)有限公司 | Quick on/ off source follower |
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| CN101904088A (en) * | 2007-12-18 | 2010-12-01 | 高通股份有限公司 | Amplifier with dynamic bias |
| CN201853116U (en) * | 2010-08-25 | 2011-06-01 | 河北农业大学 | Automatic monitoring system for henhouse environment |
| CN103490766A (en) * | 2013-08-29 | 2014-01-01 | 苏州苏尔达信息科技有限公司 | High-speed high-precision source electrode follower circuit |
| CN203502819U (en) * | 2013-10-26 | 2014-03-26 | 付廷斌 | Hen house control system |
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