CN106404855A - Base electrode-adjusting steady-state humidity detection system for granular food - Google Patents
Base electrode-adjusting steady-state humidity detection system for granular food Download PDFInfo
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- CN106404855A CN106404855A CN201610395584.6A CN201610395584A CN106404855A CN 106404855 A CN106404855 A CN 106404855A CN 201610395584 A CN201610395584 A CN 201610395584A CN 106404855 A CN106404855 A CN 106404855A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/228—Circuits therefor
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Abstract
The invention discloses a base electrode-adjusting steady-state humidity detection system for granular food. The base electrode-adjusting steady-state humidity detection system comprises a humidity detection circuit; the humidity detection circuit is connected with a signal processing circuit, an indication feedback circuit and a power input circuit which are successively connected in series; and the humidity detection circuit and the signal processing circuit are further provided with a steady-state humidity detection circuit and a base electrode adjusting circuit, respectively. The base electrode-adjusting steady-state humidity detection system in the invention can better detect a small amount of granular food, greatly improves detection sensitivity and speed and has a wider application scope.
Description
Technical field
The invention belongs to Humidity Detection instrument field, specifically refer to particle food and adjust base stable state Humidity Detection system
System.
Background technology
Certain condition deposited by the foods such as beans, frumentum, especially can not leave the too high ring of humidity in
In border, if the humidity of food is too high is easy to breed bacteria or even moldy metamorphism.And current humidity measurement instrument
Device is complex to the Humidity Detection mode of food, needs after substantial amounts of food build-up, it integrally will to be carried out
Detection, and when food is less be difficult to pile up when, existing product be difficult to its humidity is quickly detected.
There is part can detect that the sensitivity of product of a small amount of food humidity and response speed are also relatively slow, thus result in
Detection efficiency low.
Content of the invention
It is an object of the invention to overcoming the problems referred to above, particle food is provided to adjust base stable state dust humidity detection system,
Preferably a small amount of particle food can be detected, substantially increase sensitivity and the speed of detection,
Preferably improve the scope of application of product.
The purpose of the present invention is achieved through the following technical solutions：
Particle food adjusts base stable state dust humidity detection system, including chip U1, is serially connected in the RESET of chip U1
Resistance R1 between pin and DISCH pin, is serially connected in the DISCH pin of chip U1 and TRIG manages
Resistance R2 between foot, positive pole is connected with the TRIG pin of chip U1, the GND of negative pole and chip U1
The electric capacity C1 that pin is connected, and the electric capacity C2 group that positive pole is connected with the CONT pin of chip U1
The humidity measuring circuit becoming；Wherein, model NE555 of chip U1, the RESET pin of chip U1
It is connected with VCC pin, the THRES pin of chip U1 is connected with TRIG pin, electric capacity C1's
Two flat boards are as the test side of this humidity measuring circuit；Humidity measuring circuit is also associated be sequentially connected in series
Signal processing circuit, indication feedback circuit and power supply input circuit, in humidity measuring circuit and signal processing
Wet inspection steady-state circuit is additionally provided with circuit and adjusts base circuit.
Preferably, described signal processing circuit be connected with the OUT pin of chip U1 by positive pole, negative pole
The electric capacity C3 being connected with the negative pole of electric capacity C2 after resistance R3, N pole after electric capacity C4 with electric capacity C3
Positive pole be connected, diode D1 that P pole is connected with the negative pole of electric capacity C3, and P pole and diode
The diode D2 that the N pole of D1 is connected, N pole is connected with the P pole of diode D1 after electric capacity C5
Composition；Wherein, the negative pole of electric capacity C4 is connected with the N pole of diode D1, the N pole of diode D2 with
The positive pole of electric capacity C5 is connected.
Preferably, described indication feedback circuit is by reading table B, audion VT1, one end and audion VT1
Emitter stage be connected, resistance R5 that the other end is connected with the negative pole of electric capacity C2, one end and audion VT1
Base stage be connected, the other end is connected with the VCC pin of chip U1 after resistance R4, sliding end with
The slide rheostat RP1 that the negative pole of reading table B is connected, positive pole is connected with the VCC pin of chip U1,
The electric capacity C6 that negative pole is connected with the negative pole of electric capacity C2, and one end is connected with the colelctor electrode of audion VT1
Connect, resistance R6 that the other end is connected with the negative pole of electric capacity C6 composition；Wherein, reading table B is voltmeter,
The positive pole of reading table B is connected with the N pole of diode D2.
Preferably, described power supply input circuit is by power supply GB, and N pole after resistance R8 with power supply
The diode D3 composition that the positive pole of GB is connected, P pole is connected with the negative pole of electric capacity C6 after resistance R7；
Wherein, the N pole of diode D3 is connected with the VCC pin of chip U1, the negative pole of power supply GB with electricity
The negative pole holding C6 is connected.
Further, described wet inspection steady-state circuit is by audion VT2, audion VT3, audion VT4, P
Pole is connected with the base stage of audion VT2, N pole is connected with the emitter stage of audion VT2 after resistance R11
The diode D4 connecing, positive pole is connected with the base stage of audion VT2 after resistance R12, negative pole and three poles
The electric capacity C8 that the emitter stage of pipe VT3 is connected, positive pole is connected with the colelctor electrode of audion VT2, negative pole
The electric capacity C7 that is connected with the emitter stage of audion VT3 after resistance R17, is arranged in parallel with electric capacity C7
Resistance R10, one end is connected with the positive pole of electric capacity C7, the other end after resistance R13 with electric capacity C8 just
The resistance R9 that pole is connected, one end is connected with the colelctor electrode of audion VT3, the other end and resistance R9 and
The resistance R14 that the junction point of resistance R13 is connected, one end is connected with the base stage of audion VT3, another
Hold the company of the resistance R15 being connected with the colelctor electrode of audion VT4, one end and resistance R9 and resistance R13
Contact is connected, the other end is connected with the colelctor electrode of audion VT4 resistance R16, one end and audion
The resistance R18 that the emitter stage of VT3 is connected, the other end is connected with the emitter stage of audion VT4, and
One end is connected with the emitter stage of audion VT3, the resistance that the other end is connected with the base stage of audion VT4
R19 forms；Wherein, the N pole of diode D4 is as the input of this wet inspection steady-state circuit, audion VT4
Colelctor electrode as this wet inspection steady-state circuit outfan, the N pole of diode D4 and the negative pole phase of electric capacity C1
Connect, the colelctor electrode of audion VT4 is connected with the negative pole of electric capacity C3.
Further, described tune base circuit is by operational amplifier P1, operational amplifier P2, positive pole and computing
The negative input end of amplifier P1 is connected, negative pole outfan phase with operational amplifier P1 after resistance R21
The output of the electric capacity C9 connecting, the resistance R20 being arranged in parallel with electric capacity C9, one end and operational amplifier P1
End is connected, the other end is connected with the negative input end of operational amplifier P2 resistance R23, one end and electric capacity
The resistance R22 that the negative pole of C9 is connected, the other end is connected with the negative input end of operational amplifier P2, one end
It is connected with the negative input end of operational amplifier P2, the other end is connected with the outfan of operational amplifier P2
Resistance R24, and positive pole be connected with the positive input terminal of operational amplifier P2 after resistance R25, negative pole
The electric capacity C10 composition being connected with the outfan of operational amplifier P2；Wherein, operational amplifier P1 is being just
Input end grounding, the negative pole of electric capacity C9 meets 6V power supply, the plus earth of electric capacity C10, operational amplifier P1
Outfan as this tune base circuit input, the outfan of operational amplifier P2 is as this operational amplifier
The outfan of P2, the input of operational amplifier P1 is connected with the VCC pin of chip U1, and computing is put
The outfan of big device P2 is connected with the negative pole of electric capacity C2.
The present invention compared with prior art, has advantages below and beneficial effect：
The particle food of the present invention adjusts base stable state dust humidity detection system can quickly single graininess be eaten
The humidity of thing is detected, has high stability, substantially increases motility and the Detection results of detection,
Overcome the defect that prior art can only be detected to substantial amounts of graininess, have higher detection effect simultaneously
Rate, the detection efficiency comparing existing detection meanss improves 30-50%.
Brief description
Fig. 1 is the circuit structure diagram of the particle food tune base stable state dust humidity detection system of the present invention.
Fig. 2 is the circuit structure diagram of the wet inspection steady-state circuit of the present invention.
Fig. 3 is the circuit structure diagram of the tune base circuit of the present invention.
Specific embodiment
With reference to embodiment, the present invention is described in further detail, but embodiments of the present invention do not limit
In this.
Embodiment
As shown in figure 1, particle food adjusts base stable state dust humidity detection system, including chip U1, it is serially connected in core
Resistance R1 between the RESET pin of piece U1 and DISCH pin, is serially connected in the DISCH of chip U1
Resistance R2 between pin and TRIG pin, positive pole is connected with the TRIG pin of chip U1, negative pole with
The electric capacity C1 that the GND pin of chip U1 is connected, and positive pole is connected with the CONT pin of chip U1
The humidity measuring circuit of the electric capacity C2 composition connecing；Wherein, model NE555 of chip U1, chip U1
RESET pin be connected with VCC pin, the THRES pin of chip U1 is connected with TRIG pin
Connect, two flat boards of electric capacity C1 are as the test side of this humidity measuring circuit；Humidity measuring circuit also connects
It is connected to the signal processing circuit being sequentially connected in series, indication feedback circuit and power supply input circuit, in Humidity Detection electricity
It is additionally provided with wet inspection steady-state circuit and tune base circuit in road and signal processing circuit.
Signal processing circuit by electric capacity C3, electric capacity C4, electric capacity C5, diode D1, diode D2, with
And resistance R3 composition.
During connection, the positive pole of electric capacity C3 is connected with the OUT pin of chip U1, negative pole is after resistance R3
It is connected with the negative pole of electric capacity C2, the N pole of the diode D1 positive pole phase with electric capacity C3 after electric capacity C4
Connect, P pole is connected with the negative pole of electric capacity C3, the N pole phase of the P pole of diode D2 and diode D1
Connect, N pole is connected with the P pole of diode D1 after electric capacity C5.
Wherein, the negative pole of electric capacity C4 is connected with the N pole of diode D1, the N pole of diode D2 with electricity
The positive pole holding C5 is connected.
Indication feedback circuit is by reading table B, audion VT1, slide rheostat RP1, resistance R4, resistance
R5, resistance R6, and electric capacity C6 form.
During connection, one end of resistance R5 is connected with the emitter stage of audion VT1, the other end and electric capacity C2
Negative pole be connected, one end of slide rheostat RP1 is connected with the base stage of audion VT1, other end warp
It is connected with the VCC pin of chip U1 after resistance R4, sliding end is connected with the negative pole of reading table B,
The positive pole of electric capacity C6 is connected with the VCC pin of chip U1, negative pole is connected with the negative pole of electric capacity C2,
One end of resistance R6 is connected with the colelctor electrode of audion VT1, the other end is connected with the negative pole of electric capacity C6.
Wherein, reading table B is voltmeter, and the positive pole of reading table B is connected with the N pole of diode D2.
Power supply input circuit is made up of power supply GB, resistance R7, resistance R8, and diode D3.
During connection, N pole is connected with the positive pole of power supply GB after resistance R8, P pole after resistance R7 with
The diode D3 that the negative pole of electric capacity C6 is connected.
Wherein, the N pole of diode D3 is connected with the VCC pin of chip U1, the negative pole of power supply GB
It is connected with the negative pole of electric capacity C6.
As shown in Fig. 2 wet inspection steady-state circuit is by audion VT2, audion VT3, audion VT4, two
Pole pipe D4, electric capacity C7, electric capacity C8, resistance R9, resistance R10, resistance R11, resistance R12, resistance
R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, and resistance R19 group
Become.
During connection, the P pole of diode D4 is connected with the base stage of audion VT2, N pole is through resistance R11
Be connected with the emitter stage of audion VT2 afterwards, the positive pole of electric capacity C8 after resistance R12 with audion VT2
Base stage be connected, negative pole is connected with the emitter stage of audion VT3, the positive pole of electric capacity C7 and audion
The colelctor electrode of VT2 is connected, negative pole is connected with the emitter stage of audion VT3 after resistance R17, resistance
R10 is arranged in parallel with electric capacity C7, and one end of resistance R9 is connected with the positive pole of electric capacity C7, other end warp
It is connected with the positive pole of electric capacity C8 after resistance R13, the colelctor electrode of one end of resistance R14 and audion VT3
It is connected, the other end is connected with the junction point of resistance R9 and resistance R13, one end of resistance R15 and three
The base stage of pole pipe VT3 is connected, the other end is connected with the colelctor electrode of audion VT4, and the one of resistance R16
End is connected with the junction point of resistance R9 and resistance R13, the other end is connected with the colelctor electrode of audion VT4
Connect, one end of resistance R18 is connected with the emitter stage of audion VT3, the sending out of the other end and audion VT4
Emitter-base bandgap grading is connected, and one end of resistance R19 is connected with the emitter stage of audion VT3, the other end and audion
The base stage of VT4 is connected.
Wherein, the N pole of diode D4 is as the input of this wet inspection steady-state circuit, the collection of audion VT4
Electrode is connected with the negative pole of electric capacity C1 as the outfan of this wet inspection steady-state circuit, the N pole of diode D4,
The colelctor electrode of audion VT4 is connected with the negative pole of electric capacity C3.
As shown in figure 3, adjusting base circuit by operational amplifier P1, operational amplifier P2, electric capacity C9, electric capacity
C10, resistance R20, resistance R21, resistance R22, resistance R23, resistance R24, and resistance R25 group
Become.
During connection, the positive pole of resistance R20 is connected with the negative input end of operational amplifier P1, negative pole is through resistance
The electric capacity C9 being connected with the outfan of operational amplifier P1 after R21, is arranged in parallel with electric capacity C9, resistance
One end of R23 is connected with the outfan of operational amplifier P1, the other end and operational amplifier P2 negative defeated
Enter end to be connected, one end of resistance R22 is connected with the negative pole of electric capacity C9, the other end and operational amplifier
The negative input end of P2 is connected, one end of resistance R24 is connected with the negative input end of operational amplifier P2,
The other end is connected with the outfan of operational amplifier P2, the positive pole of electric capacity C10 after resistance R25 with computing
The positive input terminal of amplifier P2 is connected, negative pole is connected with the outfan of operational amplifier P2.
Wherein, the positive input terminal ground connection of operational amplifier P1, the negative pole of electric capacity C9 connects 6V power supply, electric capacity
The plus earth of C10, the outfan of operational amplifier P1 is as the input of this tune base circuit, operation amplifier
The outfan of device P2 is as the outfan of this operational amplifier P2, the input of operational amplifier P1 and chip
The VCC pin of U1 is connected, and the outfan of operational amplifier P2 is connected with the negative pole of electric capacity C2.
During use, granular food is placed between two flat boards of electric capacity C1, electric capacity C1 can basis
The different moisture content of particle food changes capacitance, and judges electricity eventually through the reading in reading table B
Hold the change of capacitance in C1, and obtain the humidity of particle food by change.
So just quickly the humidity of single particle food can be detected, have high stablizing
Property, substantially increase motility and the Detection results of detection, overcoming prior art can only be to substantial amounts of granule
The defect that shape is detected, has higher detection efficiency simultaneously, compares the detection effect of existing detection meanss
Rate improves 30-50%.
As described above, the present invention just can be realized well.
Claims (7)
1. particle food adjust base stable state dust humidity detection system it is characterised in that：Including chip U1, concatenate
Resistance R1 between the RESET pin and DISCH pin of chip U1, is serially connected in chip U1's
Resistance R2 between DISCH pin and TRIG pin, positive pole is connected with the TRIG pin of chip U1,
The electric capacity C1 that negative pole is connected with the GND pin of chip U1, and the CONT pipe of positive pole and chip U1
The humidity measuring circuit of the electric capacity C2 composition that foot is connected；Wherein, model NE555 of chip U1, core
The RESET pin of piece U1 is connected with VCC pin, and the THRES pin of chip U1 is managed with TRIG
Foot is connected, and two flat boards of electric capacity C1 are as the test side of this humidity measuring circuit；In humidity measuring circuit
On be also associated with the signal processing circuit, indication feedback circuit and the power supply input circuit that are sequentially connected in series, in humidity
It is additionally provided with wet inspection steady-state circuit and tune base circuit in testing circuit and signal processing circuit.
2. particle food according to claim 1 adjust base stable state dust humidity detection system it is characterised in that：
Described wet inspection steady-state circuit is by audion VT2, audion VT3, audion VT4, P pole and audion VT2
Base stage be connected, diode D4 that N pole is connected with the emitter stage of audion VT2 after resistance R11,
Positive pole is connected with the base stage of audion VT2 after resistance R12, the emitter stage phase of negative pole and audion VT3
Connect electric capacity C8, positive pole is connected with the colelctor electrode of audion VT2, negative pole after resistance R17 with three poles
The electric capacity C7 that the emitter stage of pipe VT3 is connected, the resistance R10 being arranged in parallel with electric capacity C7, one end and electricity
The resistance R9 that the positive pole of appearance C7 is connected, the other end is connected with the positive pole of electric capacity C8 after resistance R13,
One end is connected with the colelctor electrode of audion VT3, the junction point phase of the other end and resistance R9 and resistance R13
The resistance R14 connecting, one end is connected with the base stage of audion VT3, the collection of the other end and audion VT4
The resistance R15 that electrode is connected, one end is connected with the junction point of resistance R9 and resistance R13, the other end with
The resistance R16 that the colelctor electrode of audion VT4 is connected, one end is connected with the emitter stage of audion VT3,
The resistance R18 that the other end is connected with the emitter stage of audion VT4, and the sending out of one end and audion VT3
Emitter-base bandgap grading is connected, the resistance R19 composition that the other end is connected with the base stage of audion VT4；Wherein, two pole
As the input of this wet inspection steady-state circuit, the colelctor electrode of audion VT4 is as this wet inspection for the N pole of pipe D4
The outfan of steady-state circuit.
3. particle food according to claim 2 adjust base stable state dust humidity detection system it is characterised in that：
, by operational amplifier P1, operational amplifier P2, positive pole is negative defeated with operational amplifier P1's for described tune base circuit
Enter the electric capacity C9 that end is connected, negative pole is connected after resistance R21 with the outfan of operational amplifier P1,
The resistance R20 being arranged in parallel with electric capacity C9, one end is connected with the outfan of operational amplifier P1, another
Hold the resistance R23 being connected with the negative input end of operational amplifier P2, one end is connected with the negative pole of electric capacity C9
Connect, resistance R22, one end and operational amplifier that the other end is connected with the negative input end of operational amplifier P2
The resistance R24 that the negative input end of P2 is connected, the other end is connected with the outfan of operational amplifier P2, with
And positive pole be connected with the positive input terminal of operational amplifier P2 after resistance R25, negative pole and operational amplifier
The electric capacity C10 composition that the outfan of P2 is connected；Wherein, the positive input terminal ground connection of operational amplifier P1,
The negative pole of electric capacity C9 connects 6V power supply, the plus earth of electric capacity C10, and the outfan of operational amplifier P1 is made
For the input of this tune base circuit, the outfan of operational amplifier P2 is as the output of this operational amplifier P2
End.
4. particle food according to claim 3 adjust base stable state dust humidity detection system it is characterised in that：
Described signal processing circuit is connected with the OUT pin of chip U1 by positive pole, negative pole after resistance R3 with
The electric capacity C3 that the negative pole of electric capacity C2 is connected, N pole is connected with the positive pole of electric capacity C3 after electric capacity C4,
The diode D1 that P pole is connected with the negative pole of electric capacity C3, and P pole is extremely connected with the N of diode D1
Connect, diode D2 that N pole is connected with the P pole of diode D1 after electric capacity C5 composition；Wherein, electricity
The negative pole holding C4 is connected with the N pole of diode D1, the N pole of diode D2 and the positive pole of electric capacity C5
It is connected.
5. particle food according to claim 4 adjust base stable state dust humidity detection system it is characterised in that：
By reading table B, audion VT1, one end is connected described indication feedback circuit with the emitter stage of audion VT1
Connect, resistance R5 that the other end is connected with the negative pole of electric capacity C2, one end is connected with the base stage of audion VT1
Connect, the other end is connected with the VCC pin of chip U1 after resistance R4, sliding end and reading table B
The slide rheostat RP1 that negative pole is connected, positive pole is connected with the VCC pin of chip U1, negative pole with electricity
Hold the electric capacity C6 that is connected of negative pole of C2, and one end be connected with the colelctor electrode of audion VT1, another
Hold the resistance R6 composition being connected with the negative pole of electric capacity C6；Wherein, reading table B is voltmeter, reading table
The positive pole of B is connected with the N pole of diode D2.
6. particle food according to claim 5 adjust base stable state dust humidity detection system it is characterised in that：
Described power supply input circuit by power supply GB, and N pole be connected with the positive pole of power supply GB after resistance R8,
The diode D3 composition that P pole is connected with the negative pole of electric capacity C6 after resistance R7；Wherein, diode D3
N pole be connected with the VCC pin of chip U1, the negative pole of power supply GB is connected with the negative pole of electric capacity C6
Connect.
7. particle food according to claim 6 adjust base stable state dust humidity detection system it is characterised in that：
The N pole of described diode D4 is connected with the negative pole of electric capacity C1, the colelctor electrode of audion VT4 and electric capacity
The negative pole of C3 is connected, and the input of operational amplifier P1 is connected with the VCC pin of chip U1, fortune
The outfan calculating amplifier P2 is connected with the negative pole of electric capacity C2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395584.6A CN106404855A (en) | 2016-06-03 | 2016-06-03 | Base electrode-adjusting steady-state humidity detection system for granular food |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610395584.6A CN106404855A (en) | 2016-06-03 | 2016-06-03 | Base electrode-adjusting steady-state humidity detection system for granular food |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106404855A true CN106404855A (en) | 2017-02-15 |
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ID=58005862
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610395584.6A Pending CN106404855A (en) | 2016-06-03 | 2016-06-03 | Base electrode-adjusting steady-state humidity detection system for granular food |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104180A (en) * | 2018-08-08 | 2018-12-28 | 义乌工商职业技术学院 | electronic information data processing system |
-
2016
- 2016-06-03 CN CN201610395584.6A patent/CN106404855A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109104180A (en) * | 2018-08-08 | 2018-12-28 | 义乌工商职业技术学院 | electronic information data processing system |
| CN109104180B (en) * | 2018-08-08 | 2022-03-08 | 义乌工商职业技术学院 | Electronic information data processing system |
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Application publication date: 20170215 |