CN107238636A - A kind of condenser type moisture analyser - Google Patents
A kind of condenser type moisture analyser Download PDFInfo
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- CN107238636A CN107238636A CN201710401650.0A CN201710401650A CN107238636A CN 107238636 A CN107238636 A CN 107238636A CN 201710401650 A CN201710401650 A CN 201710401650A CN 107238636 A CN107238636 A CN 107238636A
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- G—PHYSICS
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- 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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Abstract
The invention discloses condenser type moisture analyser, including：Data acquisition module, main control module；The data acquisition module, weight and detection for gathering cereal to be detected flow through the frequency of the electric current of the cereal to be detected, and the data acquisition module includes：Pressure acquisition submodule and frequency collection submodule；The main control module, by for the computation rule by default settings, according to the weight and the frequency of the cereal to be detected, determining the moisture value of the cereal to be detected, wherein, the main control module by model PIC18F458 singlechip group into.Using the present invention, the accuracy of grain moisture measurement to be detected can be improved.
Description
Technical field
The present invention relates to water content detection field, more particularly to a kind of condenser type moisture analyser.
Background technology
Cereal moisture percentage is the ratio of the moisture and weight included in specific cereal, be influence one of grain quality it is important
Factor.In practical application, cereal moisture percentage may decide that the security of grain storage, similarly cereal processing technology and circulation
Process needs to use.For example need to be dried in the process of cereal, drying is to reach moisture in reduction cereal
Purpose, typically using with hot blast or directly being heated to cereal, to reduce the moisture content of cereal, but be dried to assorted
Degree can stop, it is necessary to be determined by the cereal moisture percentage obtained.So that, can not in the process to cereal
Influence cereal nutritional ingredient and quality.
Water analysis of the prior art directly obtains the moisture value of cereal to be detected by capacitance sensor, does not consider
To influence of the surrounding environment for moisture value, influence the accuracy of measurement result not high.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of condenser type moisture analyser, to improve cereal to be detected
The accuracy of water content detection.
To achieve the above object, the present invention provides following technical scheme：A kind of condenser type moisture analyser, including：Number
According to acquisition module, main control module, display module and power module；
The data acquisition module, the cereal to be detected is flowed through for gathering the weight of cereal to be detected and detecting
The frequency of electric current, the data acquisition module includes：Pressure acquisition submodule and frequency collection submodule；Pressure acquisition
Module includes：The data that pressure sensor is collected are sent to AD converter by resistance R10 and resistance R14, the AD conversion
The model HX711 of device, the connection voltage VCC of pin 1 of the AD converter is simultaneously grounded, and pass through inductance by electric capacity C8, C9
L1 is connected with pin 16, and the pin 2 of the AD converter is connected to triode Q4 base stage, the triode by resistance R11
Q4 emitter stage is connected with the electric capacity VCC, and the colelctor electrode of the triode Q4 is connected with the pin 3 of the AD converter, and
The pin 3 is connected with voltage VDD, and the voltage VDD is connected by the pin 4 of AD converter described in resistance R12, described to draw
Pin 4 is connected and is grounded with the pin 5 of the AD converter by resistance R15, and the pin 6 of the AD converter passes through electric capacity C15
Ground connection, the pin 7 and pin 8 of the AD converter respectively with the data of the pressure sensor respectively with the resistance R10 and
The resistance R14 is connected, for receiving the data that the pressure sensor is collected, the pin 11 and pin of the AD converter
12 are connected with the main control module respectively；Frequency collection submodule includes：The data that capacitance sensor is collected pass through resistance R1
Transmit to inductance LH1 pin 1, the pin 3 of the inductance LH1, pin 4 and draw after the wave filter of electric capacity C1 and electric capacity C3 compositions
Pin 5 is connected, and is connected with voltage VCC, and the voltage VCC is grounded by electric capacity C2；The pin 5 of the inductance LH1 passes through
Resistance R2 and inductance LH1 pin 2 is connected to triode Q1 colelctor electrode, the colelctor electrode and emitter stage of the triode Q1
Between shunt capacitance C4, triode Q1 emitter stage pass through the electric capacity C8 and resistance R8 that are connected in parallel ground connection, three pole
Pipe Q1 base stage is connected by resistance R4 with voltage VCC, and is connected by resistance R7 with diode D1 anode, the diode
D1 minus earth；The base stage of the triode is grounded by electric capacity C6；The triode Q1 passes through electric capacity C5 and triode Q2
Base stage be connected, the base stage of the triode Q2 be connected by resistance R5 with the colelctor electrode of the triode Q2 and with voltage VCC
It is connected, the triode Q2 is grounded by resistance R9；The base stage that the triode Q2 emitter stages pass through electric capacity C7 and triode Q3
It is connected, and the base stage of the triode Q3 is connected by resistance R6 with the colelctor electrode of the triode Q3, and the triode Q3
Colelctor electrode be connected by resistance R3 with electric capacity L1 with voltage VCC, the grounded emitter of the triode Q3, the triode Q3
Colelctor electrode be connected with pulse counter, the output end of the pulse counter is connected with the main control module, the pulsimeter
The model of number device：74HC4024D；
The main control module, by for the computation rule by default settings, according to the described heavy of the cereal to be detected
Amount and the frequency, determine the moisture value of the cereal to be detected, wherein, the main control module is by model PIC18F458's
Singlechip group into；
The power module includes：Input module U3 is that power interface is used to receive input voltage, is filtered by electric capacity C1
After input to voltage conversion chip U1, the model SPX1117-5.0 of the voltage conversion chip U1, the voltage conversion chip
U1 output voltage VCC_1, the output voltage VCC_1 after electric capacity C2 filtering and by diode D1 after transformation is exported
Connect electric capacity C3 and by filtered control source to voltage conversion chip U2, the voltage conversion chip U2 output ends and electric capacity
C4 is connected, output voltage VCC, and electric capacity C4 other end ground connection；
The display module includes：LCD model JLX12864G-332-2-BN, the LCD data bus pins 1
VCC is connected with pin 2, pin 4 to pin 7, pin 10 to pin 13 pass through LCD_D7 to LCD_D4, LCD_D3 to LCD_ respectively
D0 is connected with the data pin of the main control module, and pin 8 to pin 9 passes through control signal LCD_ON, LCD_CD, and pin
14- pins 16 are connected by control signal LCD_RD, LCD_RW, LCD_RS with the main control module.
Optionally, the temperature value that the data acquisition module also gathers the cereal place to be detected environment with being included in
Temperature acquisition submodule, the temperature acquisition submodule includes：Temperature sensor is connected with electric capacity C11, and the electric capacity C11
One end is connected to voltage VCC by resistance R9, and the other end passes through resistance R13, electric capacity by being connected to the main control module
C13 is grounded.
Optionally, in addition to：Alarm module,
The alarm module, is alarmed for the main control module according to the moisture value；The alarm module includes：
Voice command chip U7 and loudspeaker SPK1, the Voice command chip U7 pin 2 and pin 3 are connected with SPK1, institute's predicate
Sound control chip U7 pin 1 and it is connected with electric capacity C14 one end, the other end of the electric capacity C14 and the Voice command core
Piece U7 pin 5 is connected；Pin 6, pin 7 and the pin 8 of the Voice command chip U7 is connected with the main control module respectively,
Wherein, the model of the Voice command chip U7：SC8035.
(1) a kind of, condenser type moisture analyser of the invention, obtains to be detected by the weight and frequency of cereal to be detected
The moisture value of cereal compares only obtains the moisture value of cereal to be detected by moisture transducer in the prior art, it is possible to increase water
The degree of accuracy of score value；In addition, the embodiment of the present invention further contemplates the environment temperature around cereal to be detected, further obtain to be detected
The moisture value of cereal, therefore, it is possible to eliminate influence of the temperature to cereal to be detected and moisture value, has reached raising cereal to be detected
The accuracy of moisture value measurement；
(2), a kind of condenser type moisture analyser of the invention, can be carried by using the pulse counter in collecting unit
The accuracy that high impulse is counted, and by filtering the shadow caused with enhanced processing elimination environment to measurement result before counting
Ring；
(3), a kind of condenser type moisture analyser of the invention, can be alarmed according to measurement result, can remind use
Family measurement result, so that user is further processed, and is constantly in the monitor state to equipment without user, improves use
Experience at family.
Brief description of the drawings
Fig. 1 is the circuit diagram of the acquisition module of the present invention；
Fig. 2 is the circuit diagram of the voltage conversion of the present invention；
Fig. 3 is the circuit diagram of the display circuit of the present invention；
Fig. 4 is the circuit diagram of the main control module of the present invention；
Fig. 5 is the circuit diagram of the temperature acquisition submodule of the present invention；
Fig. 6 is the circuit diagram of the alarm module of the present invention；
Fig. 7 is the circuit diagram of the key-press module of the present invention.
Embodiment
To make the purpose, technical scheme and advantage of invention of greater clarity, below by accompanying drawing and embodiment, to this
Inventive technique scheme is further elaborated.However, it should be understood that specific embodiment described herein is only to solve
Technical solution of the present invention is released, the scope of technical scheme is not intended to limit the invention.
A kind of condenser type moisture analyser, data acquisition module, main control module is as shown in figure 1, specifically include：Pressure is adopted
Collect submodule and frequency collection submodule；The pressure acquisition submodule includes：The data that pressure sensor is collected are by electricity
Resistance R10 and resistance R14 is sent to AD converter, and the model HX711 of the AD converter, the pin 1 of the AD converter connects
Meet voltage VCC and be grounded by electric capacity C8, C9, and be connected by inductance L1 with pin 16, the pin 2 of the AD converter passes through
Resistance R11 is connected to triode Q4 base stage, and the emitter stage of the triode Q4 is connected with the electric capacity VCC, the triode
Q4 colelctor electrode is connected with the pin 3 of the AD converter, and the pin 3 is connected with voltage VDD, and the voltage VDD is logical
The pin 4 for crossing AD converter described in resistance R12 is connected, the phase of pin 5 that the pin 4 passes through resistance R15 and the AD converter
Connect and be grounded, the pin 6 of the AD converter is grounded by electric capacity C15, the pin 7 and pin 8 of the AD converter respectively with
The data of the pressure sensor are connected with the resistance R10 and the resistance R14 respectively, for receiving the pressure sensor
The data collected, the pin 11 and pin 12 of the AD converter are connected with the main control module respectively；Frequency collection submodule
Block includes：The data that capacitance sensor is collected are transmitted to inductance after the wave filter that resistance R1 electric capacity C1 and electric capacity C3 are constituted
LH1 pin 1, pin 3, the pin 4 of the inductance LH1 are connected with pin 5, and are connected with voltage VCC, the voltage
VCC is grounded by electric capacity C2；The pin 5 of the inductance LH1 is connected to three poles by resistance R2 and the inductance LH1 pin 2
Pipe Q1 colelctor electrode, shunt capacitance C4, the emitter stage of the triode Q1 between the colelctor electrode and emitter stage of the triode Q1
By electric capacity C8 and resistance the R8 ground connection being connected in parallel, the base stage of the triode Q1 is connected by resistance R4 with voltage VCC, and
It is connected by resistance R7 with diode D1 anode, the minus earth of the diode D1；The base stage of the triode passes through electricity
Hold C6 ground connection；The triode Q1 is connected by electric capacity C5 with triode Q2 base stage, and the base stage of the triode Q2 passes through electricity
Resistance R5 is connected with the colelctor electrode of the triode Q2 and is connected with voltage VCC, and the triode Q2 is grounded by resistance R9；It is described
Triode Q2 emitter stages are connected by electric capacity C7 with triode Q3 base stage, and the triode Q3 base stage by resistance R6 with
The colelctor electrode of the triode Q3 is connected, and the colelctor electrode of the triode Q3 passes through resistance R3 and electric capacity L1 and voltage VCC phases
Even, the grounded emitter of the triode Q3, the colelctor electrode of the triode Q3 is connected with pulse counter, the step-by-step counting
The output end of device is connected with the main control module, the model of the pulse counter：74HC4024D；
The main control module, by for the computation rule by default settings, according to the described heavy of the cereal to be detected
Amount and the frequency, determine the moisture value of the cereal to be detected, wherein, the main control module is by model PIC18F458's
Singlechip group into；
The list for being used to power for data acquisition module, main control module, display module can also be included in the embodiment of the present invention
Element module, specific power module circuitry can be voltage conversion circuit as shown in Figure 2, and U3 is that power supply connector is used for
Input voltage is received, is inputted after electric capacity C1 filtering to voltage conversion chip U1, the model of specific voltage conversion chip
SPX1117-5.0, U1 the output voltage VCC_1 after electric capacity C2 filtering and by diode D1 after transformation is exported, then
Connect electric capacity C3 and by filtered control source to voltage conversion chip U2, U2 output ends are connected with electric capacity C4, output voltage
VCC, and electric capacity C4 other end ground connection.
Display module circuit diagram is illustrated in figure 3, can specifically be included：LCD model JLX12864G-332-2-BN,
Data bus pins 1 and pin 2 the connection VCC of the LCD, pin 4 to pin 7, pin 10 to pin 13 pass through LCD_ respectively
D7 to LCD_D4, LCD_D3 to LCD_D0 with the main control module data pin are connected, and pin 8 to pin 9 is believed by controlling
Number LCD_ON, LCD_CD, and pin 14- pins 16 pass through control signal LCD_RD, LCD_RW, LCD_RS and the master control mould
Block is connected, and Fig. 4 is the circuit diagram of main control module, can connect the circuit to Fig. 3 such as Fig. 1.
It should be noted that it is understood that data acquisition module can collect the total amount of cereal, specifically, can
To obtain the weight of cereal to be detected by pressure sensor.The pressure that sensor/sensor is caused by cereal to be detected to sensor
Power, and then obtain the weight of all cereal to be detected.In addition, the frequency of cereal to be detected can be obtained by capacitance type sensor
.Specifically, capacitance type sensor is a kind of sensor that the change of measured object non electrical quantity is converted to electric capacitance change.It has
There is high resolution, non-cpntact measurement can be carried out, and the advantage that can be worked in the environment such as high temperature, low temperature and intense radiation.With collection
Into the development of electric circuit electronics technical technology and computer technology, capacitance type sensor is by as a kind of sensor having a extensive future.
The data acquisition module is used to send the data collected to main control module, so that main control module carries out data
Processing.
After weight and frequency is obtained, main control module is sent it to, main control module can be according to the meter prestored
Rule is calculated, moisture value is obtained by the numerical value of frequency and weight.
Specifically, computation rule can be:
M=a1+a2xc+a3xcxT+a4xc 2
In formula, M is grain moisture value；xcFor cereal frequency；A0, a1, a2, a3, a4 are respectively
Number.
Further, the temperature value that the data acquisition module also gathers the cereal place to be detected environment with being included in
Temperature acquisition submodule, the temperature acquisition submodule, as shown in figure 5, including：Temperature sensor is connected with electric capacity C11, and
One end of the electric capacity C11 is connected to voltage VCC by resistance R9, and the other end is passed through by being connected to the main control module
Resistance R13, electric capacity C13 are grounded.The main control module, for the computation rule by default settings, according to the paddy to be detected
The weight, the frequency and the temperature value of thing, determine the moisture value of the cereal to be detected.
Specifically, computation rule can be：
M=a0xT+a1+a2xc+a3xcxT+a4xc 2
Wherein, a0For the temperature coefficient set according to temperature value, xTFor temperature value.
Using the embodiment shown in Fig. 5 of the present invention, measurement moisture value of the temperature to cereal to be detected can be further eliminated
Influence, can further improve moisture analyser measurement detection cereal and obtain the accuracy rate of moisture value.
In the embodiment of the present invention, specific calculation formula is only one embodiment of the present of invention, is not constituted to the present invention
Specific restriction.
Further, in addition to：Alarm module,
Referring to Fig. 6, the alarm module is alarmed for the main control module according to the moisture value；The alarm
Module includes：Voice command chip U7 and loudspeaker SPK1, the Voice command chip U7 pin 2 and pin 3 and SPK1 phases
Even, the pin 1 of the Voice command chip U7 and be connected with electric capacity C14 one end, the other end and institute's predicate of the electric capacity C14
Sound control chip U7 pin 5 is connected；Pin 6, pin 7 and the pin 8 of the Voice command chip U7 respectively with the master control
Module is connected, wherein, the model of the Voice command chip U7：SC8035.
Using the embodiment shown in Fig. 6 of the present invention, the signal of main control module transmission can be received, for carrying out voice broadcast
Reach the purpose of alarm, it is not necessary to which user is monitored, the purpose for reminding user can be just reached by audio alert.Being capable of root
Alarmed according to measurement result, user's measurement result can be reminded, so that user is further processed, and without user always
In the monitor state to equipment, Consumer's Experience is improved.
Further, the present invention can also include key-press module as shown in Figure 7, and the key-press module includes：Button is believed
Number output module U5, pin 1 to the pin 7 of the push button signalling output module U5 is respectively：KEY_OK、KEY_UP、KEY_
DOWN, KEY_CHOOSE, ground connection, KEY ON/OFF_DOWN, KEY ON/OFF, the pin 1 of the push button signalling output module U5
It is connected respectively with button S2, S3, S4, S5 to pin 4, the pin 7 of the push button signalling output module U5 and button S1 one end
It is connected, and is connected to triode Q5 base stage, the collector and emitter of the triode Q5 is grounded respectively；The triode Q5
Base stage be connected with photoelectrical coupler U6 pin 3, the pin 4 of the photoelectrical coupler U6 is connected to work electricity by resistance
Pressure；The pin 1 and pin 2 of the photoelectrical coupler U6 is connected with the main control module.
In the embodiment of the present invention, it can be abated the noise the influence to signal by photoelectrical coupler, further improve moisture
The performance of analyzer.
Specifically, can by button set temperature threshold, or water content detection desired value (when reaching the desired value
Stop detection, or alarmed using alarm module), it can further improve Consumer's Experience.
Moreover, it will be appreciated that although the present specification is described in terms of embodiments, not each embodiment is only wrapped
Containing an independent technical scheme, this narrating mode of specification is only that for clarity, those skilled in the art should
Using specification as an entirety, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
It may be appreciated other embodiment.
Claims (3)
1. a kind of condenser type moisture analyser, it is characterised in that including：Data acquisition module, main control module, display module and electricity
Source module；
The data acquisition module, weight and detection for gathering cereal to be detected flow through the electric current of the cereal to be detected
Frequency, the data acquisition module includes：Pressure acquisition submodule and frequency collection submodule；The pressure acquisition submodule
Including：The data that pressure sensor is collected are sent to AD converter by resistance R10 and resistance R14, the AD converter
Model HX711, the AD converter pin 1 connection voltage VCC simultaneously by electric capacity C8, C9 be grounded, and by inductance L1 with
Pin 16 is connected, and the pin 2 of the AD converter is connected to triode Q4 base stage by resistance R11, the triode Q4's
Emitter stage is connected with the electric capacity VCC, and the colelctor electrode of the triode Q4 is connected with the pin 3 of the AD converter, and described
Pin 3 is connected with voltage VDD, and the voltage VDD is connected by the pin 4 of AD converter described in resistance R12, the pin 4
It is connected and is grounded with the pin 5 of the AD converter by resistance R15, the pin 6 of the AD converter is connect by electric capacity C15
Ground, the pin 7 and pin 8 of the AD converter respectively with the data of the pressure sensor respectively with the resistance R10 and institute
State resistance R14 to be connected, for receiving the data that the pressure sensor is collected, the pin 11 and pin 12 of the AD converter
It is connected respectively with the main control module；Frequency collection submodule includes：The data that capacitance sensor is collected are by resistance R1 electricity
Transmitted after the wave filter for holding C1 and electric capacity C3 compositions to inductance LH1 pin 1, pin 3, pin 4 and the pin of the inductance LH1
5 are connected, and are connected with voltage VCC, and the voltage VCC is grounded by electric capacity C2；The pin 5 of the inductance LH1 passes through electricity
Resistance R2 and the inductance LH1 pin 2 are connected to triode Q1 colelctor electrode, the colelctor electrode and emitter stage of the triode Q1 it
Between shunt capacitance C4, triode Q1 emitter stage pass through the electric capacity C8 and resistance R8 that are connected in parallel ground connection, the triode
Q1 base stage is connected by resistance R4 with voltage VCC, and is connected by resistance R7 with diode D1 anode, the diode D1
Minus earth；The base stage of the triode is grounded by electric capacity C6；The triode Q1 passes through electric capacity C5's and triode Q2
Base stage be connected, the base stage of the triode Q2 be connected by resistance R5 with the colelctor electrode of the triode Q2 and with voltage VCC phases
Even, the triode Q2 is grounded by resistance R9；The base stage phase that the triode Q2 emitter stages pass through electric capacity C7 and triode Q3
Connect, and the base stage of the triode Q3 is connected by resistance R6 with the colelctor electrode of the triode Q3, and the triode Q3
Colelctor electrode is connected by resistance R3 with electric capacity L1 with voltage VCC, the grounded emitter of the triode Q3, the triode Q3's
Colelctor electrode is connected with pulse counter, and the output end of the pulse counter is connected with the main control module, the step-by-step counting
The model of device：74HC4024D；
The main control module, by for the computation rule by default settings, according to the weight of the cereal to be detected and
The frequency, determines the moisture value of the cereal to be detected, wherein, the main control module by model PIC18F458 monolithic
Machine is constituted；
The power module includes：Input module U3 is that power interface is used to receive input voltage, defeated after electric capacity C1 filtering
Enter to voltage conversion chip U1, the model SPX1117-5.0 of the voltage conversion chip U1, the voltage conversion chip U1 warps
Cross transformation output after by electric capacity C2 filter and by diode D1 after output voltage VCC_1, the output voltage VCC_1 connections
Electric capacity C3 and by filtered control source to voltage conversion chip U2, the voltage conversion chip U2 output ends and electric capacity C4 phases
Even, output voltage VCC, and electric capacity C4 other end ground connection；
The display module includes：LCD model JLX12864G-332-2-BN, the LCD data bus pins 1 and draw
Pin 2 connects VCC, pin 4 to pin 7, pin 10 to pin 13 respectively by LCD_D7 to LCD_D4, LCD_D3 to LCD_D0 and
The data pin of the main control module is connected, and pin 8 to pin 9 passes through control signal LCD_ON, LCD_CD, and pin 14-
Pin 16 is connected by control signal LCD_RD, LCD_RW, LCD_RS with the main control module.
2. condenser type moisture analyser according to claim 1, it is characterised in that the data acquisition module is also with including
The temperature acquisition submodule of the temperature value of environment where the cereal to be detected is gathered, the temperature acquisition submodule includes：
Temperature sensor is connected with electric capacity C11, and one end of the electric capacity C11 is connected to voltage VCC by resistance R9, and the other end passes through
The main control module is connected to, and is grounded by resistance R13, electric capacity C13.
3. condenser type moisture analyser according to claim 1, it is characterised in that also include：Alarm module,
The alarm module, is alarmed for the main control module according to the moisture value；The alarm module includes：Voice
Control chip U7 and loudspeaker SPK1, the Voice command chip U7 pin 2 and pin 3 are connected with SPK1, the voice control
Coremaking piece U7 pin 1 and it is connected with electric capacity C14 one end, the other end of the electric capacity C14 and the Voice command chip U7
Pin 5 be connected；Pin 6, pin 7 and the pin 8 of the Voice command chip U7 is connected with the main control module respectively, its
In, the model of the Voice command chip U7：SC8035.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401650.0A CN107238636A (en) | 2017-05-31 | 2017-05-31 | A kind of condenser type moisture analyser |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710401650.0A CN107238636A (en) | 2017-05-31 | 2017-05-31 | A kind of condenser type moisture analyser |
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| CN107238636A true CN107238636A (en) | 2017-10-10 |
Family
ID=59984790
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710401650.0A Pending CN107238636A (en) | 2017-05-31 | 2017-05-31 | A kind of condenser type moisture analyser |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5643533A (en) * | 1979-09-18 | 1981-04-22 | Iseki & Co Ltd | Measuring method of water content of grain in drying machine |
| CN2043360U (en) * | 1988-11-12 | 1989-08-23 | 商业部四川粮食储藏科学研究所 | Multifunctional grain detector |
| CN101344500A (en) * | 2008-08-21 | 2009-01-14 | 窦祥增 | Capacitor type grain and oil moisture tester |
| CN202599894U (en) * | 2012-05-30 | 2012-12-12 | 杭州麦哲仪器有限公司 | Grain moisture meter |
| CN103868954A (en) * | 2014-03-25 | 2014-06-18 | 成都国科海博信息技术股份有限公司 | Grain humidity detection circuit |
| CN205786451U (en) * | 2016-05-31 | 2016-12-07 | 林松志 | A kind of condenser type grain moisture detector |
-
2017
- 2017-05-31 CN CN201710401650.0A patent/CN107238636A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5643533A (en) * | 1979-09-18 | 1981-04-22 | Iseki & Co Ltd | Measuring method of water content of grain in drying machine |
| CN2043360U (en) * | 1988-11-12 | 1989-08-23 | 商业部四川粮食储藏科学研究所 | Multifunctional grain detector |
| CN101344500A (en) * | 2008-08-21 | 2009-01-14 | 窦祥增 | Capacitor type grain and oil moisture tester |
| CN202599894U (en) * | 2012-05-30 | 2012-12-12 | 杭州麦哲仪器有限公司 | Grain moisture meter |
| CN103868954A (en) * | 2014-03-25 | 2014-06-18 | 成都国科海博信息技术股份有限公司 | Grain humidity detection circuit |
| CN205786451U (en) * | 2016-05-31 | 2016-12-07 | 林松志 | A kind of condenser type grain moisture detector |
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