CN107064231A - One kind test adjustable moisture detector of spacing - Google Patents
One kind test adjustable moisture detector of spacing Download PDFInfo
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- CN107064231A CN107064231A CN201710400863.1A CN201710400863A CN107064231A CN 107064231 A CN107064231 A CN 107064231A CN 201710400863 A CN201710400863 A CN 201710400863A CN 107064231 A CN107064231 A CN 107064231A
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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
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/043—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a granular material
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Abstract
The adjustable moisture detector of spacing is tested the invention discloses one kind, including rolls module, rolling module includes wide rolling wheel and narrow rolling wheel, and the bearing block of wide rolling wheel is fixedly mounted on a sliding block.The bottom of sliding block is fixed with push pedal, and push pedal is fixed with being laterally located at the adjusting screw rod of housing side.The side of housing is provided with the screwed hole for being used for being threadedly coupled with adjusting screw rod, and adjusting screw rod one end is fixed with push pedal.The other end passes through screwed hole, extends to the outside of housing.The chute for being used for installing push pedal is provided with housing, the length of chute is more than the length of push pedal, and width and the push pedal of chute agree with, and the glide direction of sliding block is parallel with the line in the wide rolling wheel center of circle and the narrow rolling wheel center of circle.A kind of test adjustable moisture detector of spacing of the invention, carries out the moisture value that processing moisture transducer is obtained by switch module and amplifier module, can reduce the noise signal in sampling process, further improve the accuracy of water content detection result.
Description
Technical field
The present invention relates to a kind of resistance-type Moisture Meter, more particularly to a kind of test adjustable moisture detector of spacing.
Background technology
In resistance-type Moisture Meter, its detection module, which is built-in with, rolls module, rolls the setting of module, can more accurately examine
Measure the moisture of surveyed article.Existing to roll in module, narrow rolling wheel is solid in module is rolled, all with wide rolling wheel
Dingan County is mounted in the inside of housing, when material enters from charging aperture rolls module, rolls the operation that module pulverize material.It is logical
Often when detecting moisture content of material, the diameter structure of every kind of material is simultaneously different, when causing to detect using same Moisture Meter,
Some material diameters are excessive, when rolling, and the phenomenon of rolling wheel damage easily caused, so as to cause the rising of cost.
The content of the invention
The technical problems to be solved by the invention there is provided a kind of test adjustable moisture detector of spacing, the moisture
Instrument can adjust the distance between wide rolling wheel and narrow rolling wheel at any time, it is to avoid rolling wheel be damaged, so as to save cost.
To achieve these goals, the present invention provides following technical scheme：One kind test adjustable water content detection of spacing
It is provided with to be provided with below charging aperture, charging aperture on instrument, including shell, the shell and rolls module, the module that rolls includes
Rolling wheel is provided with by power transmission shaft in housing, the housing, the rolling wheel includes wide rolling wheel and narrow rolling wheel, described
Wide rolling wheel is arranged on housing by a drive axis respectively with narrow rolling wheel, wherein the transmission being connected with wide rolling wheel
The bottom of axle is provided with gear I, and the bottom for the power transmission shaft being connected with narrow rolling wheel is provided with gear II, the gear I and gear
II engagement, side of the gear II away from gear I is engaged with a gear III；Installation is respectively provided with the top of the housing wide
The mounting hole of rolling wheel and narrow rolling wheel, the wide rolling wheel is arranged on peace by bearing and bearing block respectively with narrow rolling wheel
Fill in hole, wherein the hole side for installing the mounting hole of narrow rolling wheel is provided with the flange being connected as a single entity with housing, the narrow rolling wheel
Bearing block is fixedly mounted on flange, and the bearing block of the wide rolling wheel is fixedly mounted on a sliding block, the bottom of the sliding block
Portion is fixed with push pedal, and the push pedal is fixed with being laterally located at the adjusting screw rod of housing side, and the side of the housing, which is provided with, to be used for
The screwed hole being threadedly coupled with adjusting screw rod, described adjusting screw rod one end is fixed with push pedal, and the other end passes through screwed hole, extends to
The outside of housing；The chute for being used for installing push pedal, and length of the length more than push pedal of the chute are provided with the housing,
The width of chute agrees with push pedal, and the glide direction of the sliding block and the line in the wide rolling wheel center of circle and the narrow rolling wheel center of circle are put down
OK；The gear III is driven by the integral control circuit below housing；The integral control circuit is gathered including moisture
Module, main control module, indicating lamp module, motor drive module, communication module and the power module powered for foregoing circuit；It is described
Data acquisition module is connected with the main control module, is analyzed for the data collected to be sent to the main control module, to obtain
The moisture value of cereal to be detected is obtained, it is that the main control module and the data acquisition module provide work that the power module, which is used for,
Voltage；Signal acquisition device is installed at the lower section of gear I and gear II, the signal acquisition device includes bullet in housing
Piece, shell fragment is provided with two, and shell fragment is arranged in housing by support, and one end of two shell fragments is fixed on support, another
End rides over the end of two power transmission shafts respectively.
It is preferred that, the hole side of screwed hole is installed with an adjusting nut, and the adjusting screw rod passes through adjusting nut, and
It is threadedly coupled with adjusting nut.
It is preferred that, the wheel rim of narrow rolling wheel is provided with section notch triangular in shape, and two side length of sides of the notch are consistent,
And both sides angle is 90 °.
It is preferred that, narrow rolling wheel is partly provided with annular knurl between per two adjacent notches.
It is preferred that, support is provided with the neck for mounting elastic sheet, and one end of the shell fragment is stuck in neck, and passes through spiral shell
Bolt is fastened.
It is preferred that, shell fragment is in Z-shaped.
It is preferred that, the data acquisition module includes：Current of electric sampling submodule, moisture sampling submodule, temperature are adopted
Appearance module；
The temperature sampling submodule includes：At least one temperature sensor, the data output of each temperature sensor
Positive pole connects operating voltage by first resistor and passes through the positive input of the first capacitance connection to sign-changing amplifier, the temperature
The data output negative pole of sensor is connected to the positive input of the sign-changing amplifier by RC wave filters, the sign-changing amplifier
Reverse input end is connected with output end；
The moisture collection submodule includes：One end of moisture transducer is connected by electric capacity C32 with the other end, and is passed through
Switching tube Q4 is connected to operating voltage with resistance R66 in parallel；The output end of the switching tube Q4 passes through electric capacity R40 and triode
Q5 colelctor electrode is connected, and the base stage of the triode Q5 passes through resistance and the supply voltage control signal from the main control module
The other end of the connected moisture transducer is connected by resistance R63 with C47, R48 and C38 in parallel, in the R48 and C38
Between be connected with switch module DG419DY pin 2, the pin 3 of the switch module is described by resistance R49, R50, R51
The pin 6 of switch module is connected with the main control module, the data output pins 1 and amplifier module U12's of the switch module
Pin 11 is connected, the positive input phase that the pin 7 of the amplifier module U12 passes through resistance R46, R47 and operational amplifier U9A
Even, the reverse input end of the operational amplifier U9A is connected with output end, the output end of the operational amplifier U9A with it is described
Main control module is connected；
The current of electric sampling submodule includes：Motor power output motor test signal after transformer T1
MOTOR TEST input amplifiers U10B reverse input end, and it is the positive input ground connection of the amplifier U10B, described anti-
The output end that phase input is connected with resistance R39, the amplifier U10B with output end passes through resistance R16's and amplifier U10A
Positive input is connected, and the inverse output terminal of the amplifier U10A is connected by resistance R62 with inverse output terminal, and described defeated
Go out end to be grounded by resistance R61, the output end is connected by resistance R57, R65 with amplifier U9B positive input, described
Amplifier U9B inverting input is connected with output end, and the output end is connected with the main control module；The main control module
By model STM32F103CBT6 singlechip group into.
It is preferred that, the motor drive module includes：Relay K3 access triode Q3s in parallel with diode D4 current collection
Pole, the anode of the diode D4 is connected with the colelctor electrode of the diode Q3, the negative electrode and operating voltage of the diode D4
Be connected, the grounded emitter of the anode of the diode D4, the base stage of the anode of the diode D4 by resistance R32 with it is described
Main control module is connected.
It is preferred that, RS485 communication modules, CAN；The RS485 communication modules include：Communication control chip
MAX485 pin 2 is connected with pin 3, and the pin 1 and pin 4 together with the communication control chip MAX485 and the master
Control module to be connected, pin 6 and pin 8 the output RS485 signals of communication of the communication control chip MAX485；
The CAN includes：Communication control chip SN65HVD232 pin 1 and pin 4 and the master control mould
Block is connected, and the pin 6 and pin 7 of the communication control chip SN65HVD232 are earthy to export by resistance R5 and R4 respectively
Signal of communication.
Using above-mentioned technical proposal, a kind of test adjustable moisture detector of spacing of the present invention is rolled by width to be adjusted
Take turns the spacing between narrow rolling wheel to adjust test spacing, by turning the adjusting screw rod of hull outside, due to adjusting screw rod
Shaft and housing between be connected through a screw thread, and the end of adjusting screw rod is fixed with push pedal, thus in rotation adjusting screw rod
When, adjusting screw rod can drive push pedal to move left and right, and push pedal is then moved left and right together with sliding block, so as to realize that wide rolling wheel is leaned on
It is near or away from narrow rolling wheel, so as to realize the spacing between wide rolling wheel and narrow rolling wheel, enable rolling device be applicable with
The particulate matter of different-diameter, it is to avoid damage the phenomenon of rolling wheel, reduces use cost.
A kind of test adjustable moisture detector of spacing of the present invention, can improve the standard of moisture analyser water analysis
True rate；A kind of test adjustable moisture detector of spacing of the present invention, processing water is carried out by switch module and amplifier module
The moisture value that sub-sensor is obtained, can reduce the noise signal in sampling process, further improve the standard of water content detection result
True property；A kind of test adjustable moisture detector of spacing of the present invention, is that can be achieved using the relatively low single-chip microcomputer of relative price
Circuit is controlled, and helps to reduce the cost of whole moisture analyser.
Brief description of the drawings
Fig. 1 is the front view of the present invention；
Fig. 2 is the structural representation that the present invention rolls module；
Fig. 3 is the top view that the present invention rolls module；
Fig. 4 is the structural representation of narrow rolling wheel of the invention；
Fig. 5 is Fig. 6 right view；
Fig. 6 is the scheme of installation of shell fragment of the present invention；
Fig. 7 is the structural representation of shell fragment of the present invention.
Fig. 8 is that the current of electric of the present invention gathers the circuit diagram of submodule；
Fig. 9 is the circuit diagram of temperature acquisition
Figure 10 is the corresponding circuit diagram of moisture acquisition module of the present invention；
Figure 11 is the circuit diagram of the main control module of the present invention；
Figure 12 is the circuit diagram of LED display module；
Figure 13 is the circuit diagram of motor drive module；
Figure 14 is the circuit diagram of communication module；
Figure 15 is the circuit diagram of voltage transformation module.
Embodiment
Below in conjunction with the accompanying drawings, by the description to embodiment, the present invention will be further described.
As shown in Fig. 1~15, the adjustable moisture detector of spacing, including shell 21 are tested the invention discloses one kind,
It is provided with to be provided with below charging aperture 22, charging aperture on shell 21 and rolls module, rolling module includes passing through in housing 1, housing 1
Power transmission shaft 2 is provided with rolling wheel, and rolling wheel includes wide rolling wheel 3 and narrow rolling wheel 4, and wide rolling wheel 3 is distinguished with narrow rolling wheel 4
It is rotatably installed in by a power transmission shaft 2 on housing 1, wherein the bottom for the power transmission shaft 2 being connected with wide rolling wheel 3 is provided with gear
I 5, the bottom for the power transmission shaft 2 being connected with narrow rolling wheel 4 is provided with gear II 6, and gear I 5 is engaged with gear II 6, and gear II 6 is remote
Side from gear I 5 is engaged with a gear III 7, and gear III 7 is driven by the integral control circuit positioned at the lower section of housing 1.Collection
Include moisture acquisition module into control circuit, main control module, indicating lamp module, motor drive module, communication module and to be above-mentioned
The power module that circuit is powered；The data acquisition module is connected with the main control module, for the data collected to be sent
To main control module analysis, to obtain the moisture value of cereal to be detected, the power module be used for for the main control module and
The data acquisition module provides operating voltage.
Signal acquisition device is installed at the lower section of gear I 5 and gear II 6, signal acquisition device includes bullet in housing 1
Piece 19, shell fragment 19 is provided with two, and shell fragment 19 is arranged in housing 1 by support 20, and one end of two shell fragments 19 is fixed on support
On 20, the other end rides over the end of two power transmission shafts 2 respectively, and shell fragment 19 is in Z-shaped, and support 20 is provided with for installing bullet
The neck 15 of piece 19, one end of shell fragment 19 is stuck in neck 15, and is fastened by bolts.
The wheel rim of the narrow rolling wheel 4 of the present invention is provided with section notch 16 triangular in shape, two side length of sides one of notch 16
Cause, and both sides angle is 90 °, and narrow rolling wheel 4 is partly provided with annular knurl 17 between per two adjacent notches 16, such
Setting can fully crush material, improve the measurement accuracy of instrument.
The top of housing 1 is respectively provided with the mounting hole for installing wide rolling wheel 3 and narrow rolling wheel 4, wide rolling wheel 3 with it is narrow
Rolling wheel 4 is arranged in mounting hole by bearing 8 and bearing block 9 respectively, wherein installing the hole side of the mounting hole of narrow rolling wheel 4
Provided with the flange 10 being connected as a single entity with housing 1, the bearing block 9 of narrow rolling wheel 4 is fixedly mounted on flange 10, wide rolling wheel 3
Bearing block 9 is fixedly mounted on a sliding block 11, and the bottom of sliding block 11 is fixed with push pedal 12, and push pedal 12 is with being laterally located at housing 1
The adjusting screw rod 13 of side is fixed, and the side of housing 1 is provided with the screwed hole for being used for being threadedly coupled with adjusting screw rod 13, adjusting screw rod
13 one end are fixed with push pedal 12, and the other end passes through screwed hole, extends to the outside of housing 1, the hole side of screwed hole is installed with
One adjusting nut 14, adjusting screw rod 13 passes through adjusting nut 14, and is threadedly coupled with adjusting nut 14.Provided with use in housing 1
It is more than the length of push pedal 12, width and the contract of push pedal 12 of chute 18 in the length of the chute 18 for installing push pedal 12, and chute 18
Close, the glide direction of sliding block 11 is parallel with the line in the wide center of circle of rolling wheel 3 and the center of circle of narrow rolling wheel 4.
Ground in the use of the present invention, realizing that regulation is wide by turning the adjusting screw rod 13 in the outside of housing 1
Spacing between pinch roller 3 and narrow rolling wheel 4.Due to being connected between the shaft and housing 1 of adjusting screw rod 13 by screw thread
Connect, and the end of adjusting screw rod 13 is fixed with push pedal 12, thus when rotating adjusting screw rod 13, adjusting screw rod 13 can drive and push away
Plate 12 is moved left and right, and push pedal 12 is then moved left and right together with sliding block 11, so as to realize that wide rolling wheel 3 is close or remote narrow
Rolling wheel 4, so as to realize
Spacing between wide rolling wheel 3 and narrow rolling wheel 4, enables rolling device to be applicable the particulate matter with different-diameter,
Avoid rolling wheel from damaging, reduce use cost.
The present invention provide it is a kind of test the adjustable moisture detector of spacing integral control circuit, data acquisition module with
Main control module is connected, and is analyzed for the data collected to be sent to the main control module, to obtain the moisture of cereal to be detected
Value, it is that the main control module and the data acquisition module provide operating voltage that the power module, which is used for,；The data acquisition
Module includes：Current of electric sampling submodule, moisture sampling submodule, temperature sampling submodule；Adopted referring to Fig. 8 for current of electric
The circuit diagram of appearance module.
Referring to the circuit diagram that Fig. 8 is current of electric sampling submodule, motorL and motorA are motor drive power supply, are passed through
The input amplifier U10B of tap 3 of coil inverting input after transformer T1, and the positive input of the amplifier U10B
Ground connection, the inverting input and output end be connected with resistance R39, amplifier U10B output end by resistance R16 and
Amplifier U10A positive input is connected, and the inverse output terminal of the amplifier U10A passes through resistance R62 and inverse output terminal
It is connected, and the output end is grounded by resistance R61, the output end is positive defeated by resistance R57, R65 and amplifier U9B's
Enter end to be connected, the inverting input of the amplifier U9B is connected with output end, and the output end and the main control module phase
Even, the signal of the specific amplifier U9B outputs is motor ADC, and pin corresponding with the main control module is connected.
Referring to Fig. 9, Fig. 9 is the circuit diagram of temperature sampling submodule, can be included：At least one temperature sensor, sensing
Device can be connected on connector J7, and J7 pin 1 and pin 2 are used for transmitting the data that temperature sensor is collected, often
The data output positive pole pin 1 of one temperature sensor is by first resistor R38 connection operating voltage 5V and passes through the first electric capacity
C30 is connected to sign-changing amplifier U8A positive input, and the data output negative pin 1 of the temperature sensor is filtered by RC
Device (the RC wave filters of C33, R42 composition in parallel) is connected to the positive input of the sign-changing amplifier, the sign-changing amplifier
Reverse input end is connected with output end.
It is the circuit diagram that moisture gathers submodule referring to Figure 10, can includes：Moisture transducer J6 one end pin 1 passes through
Electric capacity C32 is connected with other end pin 2, and is connected to operating voltage 22V with resistance R66 in parallel by switching tube Q4；It is described
Switching tube Q4 output end is connected by electric capacity R40, Q4 one end with triode Q5 colelctor electrode, the base stage of the triode Q5
It is connected by resistance R43 with the supply voltage control signal from the main control module, the other end of the moisture transducer leads to
Cross resistance R63 with C47, R48 and C38 in parallel to be connected, with switch module DG419DY pin 2 between the R48 and C38
It is connected, can also adds electric capacity C48 and C49 in J6 output end and be filtered, the pin 3 of the switch module passes through resistance
R49, R50, R51, the pin 6 of the switch module are connected with the main control module, the data output pins 1 of the switch module
It is connected with amplifier module U12 pin 11, the pin 7 of the amplifier module U12 passes through resistance R46, R47 and operational amplifier
U9A positive input is connected, and the reverse input end of the operational amplifier U9A is connected with output end, the operational amplifier
U9A output end is connected with the main control module；The current of electric sampling submodule includes：Motor power passes through transformer T1
Output motor test signal MOTOR TEST input amplifiers U10B reverse input end, and the forward direction of the amplifier U10B afterwards
Input end grounding, the inverting input and output end are connected with resistance R39, and the output end of the amplifier U10B passes through resistance
R16 is connected with the positive input of amplifier U10A (not shown)s, and the inverse output terminal of the amplifier U10A passes through electricity
Resistance R62 is connected with inverse output terminal, and the output end is grounded by resistance R61, the output end by resistance R57, R65 and
Amplifier U9B positive input is connected, and the inverting input of the amplifier U9B is connected with output end, and the output end
It is connected with the main control module, the connection of other pins of U11 and U12, referring to diagram, is to realize chip in specific figure
Complete function, can also be using other connected modes in the case where realizing chip complete function, and the embodiment of the present invention is not right
It is defined.
The main control module is by model STM32F103CBT6 singlechip group into specific connection may refer to Figure 11.
It should be noted that moisture sampling submodule specifically can be by the moisture of moisture transducer direct measurement cereal
Value, it is to be understood that obtain that grain moisture value is more unilateral by way of directly obtaining, because what is obtained is local water
Score value, and the mode obtained is not accurate enough, so in the embodiment of the present invention, moisture value will be obtained and sent to main control module 4, in case
Carry out numerical value processing；Same way, it is also possible to obtain the temperature value around cereal by temperature sensor.In this hair inventive embodiments,
Temperature sensor and/or moisture transducer can be arranged between two rolling wheels of Moisture Meter, for rolling paddy to be measured
Thing, and the numerical value obtained by the rolling wheel in roller compaction process, in real time to the collection of temperature and moisture, obtain gathered data.
By the rotation of rolling wheel, the moisture and temperature value of the cereal of diverse location are obtained, specifically, multiple be averaged can be obtained
Value, to improve the accuracy of data.
It is understood that the rolling wheel of motor results in the current value of real-time change during rolling, in addition
Can be obtained by physics knowledge, when cereal resistance value for it is known when, you can obtaining flowing through the magnitude of voltage of cereal, (magnitude of voltage is
The product of resistance value and current value).Then according to magnitude of voltage in main control module and the corresponding relation of moisture value, it can both obtain pair
The moisture value answered.It should be noted that cereal moisture content and conductance have certain calculated relationship, and conductance with electricity
Resistance can obtain magnitude of voltage with certain calculated relationship, resistance and electric current and magnitude of voltage and moisture value have default meter
Calculate formula relationship, it is possible to obtain moisture value.The specific mathematical computations embodiment of the present invention is not repeated it herein.
The water that processing moisture transducer is obtained is carried out by switch module U11 and amplifier module U12 in the embodiment of the present invention
Score value, can reduce the noise signal in sampling process, further improve the accuracy of water content detection result
Optionally, the embodiment of the present invention can also include indicating lamp module, and referring to Figure 12, the indicating lamp module includes：
Indicator lamp LED1 to LED5 one end is connected by 1K Ohmic resistances with the main control module respectively, and indicator lamp LED1 is to LED5's
The other end is grounded.The control command sent by receiving main control module controls LED1-LED5 flicker, plays the work of user reminding
With further improving Consumer's Experience.
Optionally, motor drive module as shown in fig. 13 that is also provided, the motor drive module includes：Relay K3 with
Diode D4 parallel connection access triodes Q3 colelctor electrode, the colelctor electrode phase of the anode of the diode D4 and the diode Q3
Even, the negative electrode of the diode D4 is connected with operating voltage, the grounded emitter of the anode of the diode D4, the diode
The base stage of D4 anode is connected by resistance R32 with the main control module.When relay connects 3 and 4, or 5 and 6 to realize
To the different operating of motor, for example, realize rotating and reverse for motor.
Optionally, the embodiment of the present invention also includes Figure 14 communication module, and the communication module includes：RS485 communication moulds
Block, CAN；The RS485 communication modules include：Communication control chip MAX485 (U3) pin 2 is connected with pin 3
Connect, and be connected together with the pin 1 and pin 4 of the communication control chip MAX485 with the main control module, the Control on Communication
Chip MAX485 pin 6 and pin 8 output RS485 signals of communication；
The CAN includes：Communication control chip SN65HVD232 (U5) pin 1 and pin 4 and the master
Module is controlled to be connected, the pin 6 and pin 7 of the communication control chip SN65HVD232 respectively by resistance R5 and R4 it is earthy with
Export signal of communication.
In addition, referring to Figure 15, the embodiment of the present invention also provides a kind of voltage conversion circuit figure, PL, PN are input voltage, warp
Output 24V DC voltages after transformer LCM1 and voltage conversion chip U1 are crossed, voltage can be carried out by input of 24V DC voltages
It is converted to 3.3V, 22V and positive and negative 5V.
A kind of test adjustable moisture detector of spacing of the present invention, can improve the standard of moisture analyser water analysis
True rate；A kind of test adjustable moisture detector of spacing of the present invention, processing water is carried out by switch module and amplifier module
The moisture value that sub-sensor is obtained, can reduce the noise signal in sampling process, further improve the standard of water content detection result
True property；A kind of test adjustable moisture detector of spacing of the present invention, is that can be achieved using the relatively low single-chip microcomputer of relative price
Circuit is controlled, and helps to reduce the cost of whole moisture analyser.
Above-described is only the preferred embodiment of the present invention, it is noted that for one of ordinary skill in the art
For, without departing from the concept of the premise of the invention, various modifications and improvements can be made, these belong to the present invention
Protection domain.
Claims (10)
1. it is provided with charging aperture on one kind test adjustable moisture detector of spacing, including shell (21), the shell (21)
(22), it is provided with below charging aperture and rolls module, the module that rolls is included in housing (1), the housing (1) by transmission
Axle (2) is provided with rolling wheel, and the rolling wheel includes wide rolling wheel (3) and narrow rolling wheel (4), it is characterised in that：The width
Rolling wheel (3) and narrow rolling wheel (4) are rotatably installed on housing (1) by a power transmission shaft (2) respectively, wherein with wide rolling wheel
(3) bottom of the power transmission shaft (2) of connection is provided with gear I (5), and the bottom for the power transmission shaft (2) being connected with narrow rolling wheel (4) is installed
There is gear II (6), the gear I (5) is engaged with gear II (6), side of the gear II (6) away from gear I (5) and a gear
Engage III (7)；
It is respectively provided with the top of the housing (1) and wide rolling wheel (3) and the mounting hole of narrow rolling wheel (4), the width is installed
Rolling wheel (3) is arranged in mounting hole by bearing (8) and bearing block (9) respectively with narrow rolling wheel (4), wherein installing narrow stone roller
The hole side of the mounting hole of pinch roller (4) is provided with the flange (10) being connected as a single entity with housing (1), the bearing block of the narrow rolling wheel (4)
(9) it is fixedly mounted on flange (10), the bearing block (9) of the wide rolling wheel (3) is fixedly mounted on a sliding block (11), institute
The bottom for stating sliding block (11) is fixed with push pedal (12), the push pedal (12) and the adjusting screw rod for being laterally located at housing (1) side
(13) fixed, the side of the housing (1) is provided with the screwed hole for being used for being threadedly coupled with adjusting screw rod (13), the adjusting screw rod
(13) one end is fixed with push pedal (12), and the other end passes through screwed hole, extends to the outside of housing (1)；It is provided with the housing (1)
Chute (18) for installing push pedal (12), and length of the length more than push pedal (12) of the chute (18), chute (18)
Width agree with push pedal (12), the glide direction of the sliding block (11) and wide rolling wheel (3) center of circle and narrow rolling wheel (4) center of circle
Line it is parallel；
The gear III (7) is driven by the integral control circuit below housing (1)；The integral control circuit includes water
Divide acquisition module, main control module, indicating lamp module, motor drive module, communication module and the power supply mould powered for foregoing circuit
Block；The data acquisition module is connected with the main control module, for the data collected to be sent to the main control module point
Analysis, to obtain the moisture value of cereal to be detected, the power module is used to be the main control module and the data acquisition module
Operating voltage is provided；
Signal acquisition device, the signal acquisition are installed at the lower section of the inherent gear I (5) of the housing (1) and gear II (6)
Device includes shell fragment (19), and shell fragment (19) is provided with two, and shell fragment (19) is arranged in housing (1) by support (20), two institutes
The one end for stating shell fragment (19) is fixed on support (20), and the other end rides over the end of two power transmission shafts (2) respectively.
2. the test adjustable moisture detector of spacing according to claim 1, it is characterised in that：The hole of the screwed hole
While being installed with an adjusting nut (14), the adjusting screw rod (13) passes through adjusting nut (14), and and adjusting nut
(14) it is threadedly coupled.
3. the adjustable moisture detector of test spacing according to any one of claim 2, it is characterised in that：The narrow stone roller
The wheel rim of pinch roller (4) is provided with section notch (16) triangular in shape, and two side length of sides of the notch (16) are consistent, and both sides
Angle is 90 °.
4. the test adjustable moisture detector of spacing according to claim 3, it is characterised in that：The narrow rolling wheel
(4) annular knurl (17) is partly provided between per two adjacent notches (16).
5. the test adjustable moisture detector of spacing according to claim 4, it is characterised in that：On the support (20)
Provided with the neck (15) for mounting elastic sheet (19), one end of the shell fragment (19) is stuck in neck (15), and tight by bolt
Gu.
6. the test adjustable moisture detector of spacing according to claim 5, it is characterised in that：The shell fragment (19) is in
Z-shaped.
7. the test adjustable moisture detector of spacing according to claim 1, it is characterised in that：The data acquisition module
Block includes：Current of electric sampling submodule, moisture sampling submodule, temperature sampling submodule；
The temperature sampling submodule includes：At least one temperature sensor, the data output positive pole of each temperature sensor
Operating voltage is connected by first resistor and passes through the positive input of the first capacitance connection to sign-changing amplifier, the TEMP
The data output negative pole of device is connected to the positive input of the sign-changing amplifier by RC wave filters, the sign-changing amplifier it is reverse
Input is connected with output end；
The moisture collection submodule includes：One end of moisture transducer is connected by electric capacity C32 with the other end, and passes through switch
Pipe Q4 is connected to operating voltage with resistance R66 in parallel；The output end of the switching tube Q4 passes through electric capacity R40's and triode Q5
Colelctor electrode is connected, and the base stage of the triode Q5 is connected by resistance with the supply voltage control signal from the main control module
The other end of the moisture transducer is connected by resistance R63 with C47, R48 and C38 in parallel, between the R48 and C38
It is connected with switch module DG419DY pin 2, the pin 3 of the switch module passes through resistance R49, R50, R51, the switch
The pin 6 of module is connected with the main control module, the data output pins 1 of the switch module and amplifier module U12 pin
11 are connected, and the pin 7 of the amplifier module U12 is connected by resistance R46, R47 with operational amplifier U9A positive input,
The reverse input end of the operational amplifier U9A is connected with output end, output end and the master control of the operational amplifier U9A
Module is connected；
The current of electric sampling submodule includes：Motor power output motor test signal after transformer T1
MOTORTEST input amplifiers U10B reverse input end, and the amplifier U10B positive input ground connection, it is described anti-phase
Input and output end are connected with resistance R39, amplifier U10B output end by resistance R16 and amplifier U10A just
It is connected to input, the inverse output terminal of the amplifier U10A is connected by resistance R62 with inverse output terminal, and the output
End is grounded by resistance R61, and the output end is connected by resistance R57, R65 with amplifier U9B positive input, described to put
Big device U9B inverting input is connected with output end, and the output end is connected with the main control module.
8. the test adjustable moisture detector of spacing according to claim 1, it is characterised in that：
The motor drive module includes：Relay K3 access triode Q3s in parallel with diode D4 colelctor electrode, two pole
Pipe D4 anode is connected with the colelctor electrode of the diode Q3, and the negative electrode of the diode D4 is connected with operating voltage, and described two
The grounded emitter of pole pipe D4 anode, the base stage of the anode of the diode D4 passes through resistance R32 and the main control module phase
Even.
9. the test adjustable moisture detector of spacing according to claim 1, it is characterised in that：The communication module bag
Include：RS485 communication modules, CAN；The RS485 communication modules include：Communication control chip MAX485 pin 2
It is connected with pin 3, and is connected together with the pin 1 and pin 4 of the communication control chip MAX485 with the main control module, institute
State communication control chip MAX485 pin 6 and the output RS485 signals of communication of pin 8.
10. the test adjustable moisture detector of spacing according to claim 9, it is characterised in that：The CAN communication mould
Block includes：Communication control chip SN65HVD232 pin 1 and pin 4 is connected with the main control module, the Control on Communication core
Piece SN65HVD232 pin 6 and pin 7 is earthy to export signal of communication by resistance R5 and R4 respectively.
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| CN201710400863.1A CN107064231A (en) | 2017-05-31 | 2017-05-31 | One kind test adjustable moisture detector of spacing |
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| CN201710400863.1A CN107064231A (en) | 2017-05-31 | 2017-05-31 | One kind test adjustable moisture detector of spacing |
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Application publication date: 20170818 |