CN1372134A - Cotton moisture electric measuring method and electric measurer thereof - Google Patents
Cotton moisture electric measuring method and electric measurer thereof Download PDFInfo
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- CN1372134A CN1372134A CN 01108102 CN01108102A CN1372134A CN 1372134 A CN1372134 A CN 1372134A CN 01108102 CN01108102 CN 01108102 CN 01108102 A CN01108102 A CN 01108102A CN 1372134 A CN1372134 A CN 1372134A
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Abstract
An electric measuring of cotton moisture contains on the bases of the original resistance electric measuring method, minificating the pote plate area to 14400 mm2 + or -50%, reducing the pressure to 98N minus or plus 50% and improving the measuring voltage to a step of 36V-1.5V, within the sphere of 3%-20% of the moisture regain applying the ominirange and once-through method to measure the moisture regain of cotton and within the sphene of -20 deg.C-+50 deg.C, applying the ominirange dyadic linear equation unifiedly to rectify the temperature, thus to break the traditional operation thoroughly and overcome the technical prejudice of step voltage to improve the moisture regain measurement of cotton with great convenience.
Description
The present invention relates to a kind of cotton moisture content indirect determination method and determining instrument, the cotton moisture content determining instrument (electroprobe) that is specifically related to a kind of method (electrical measuring method) and utilizes this method design by measuring resistance indirect determination cotton moisture content.
Cotton contains moisture under normal conditions, and moisture weight, physics, chemistry, the mechanical mechanics property that how much directly affects fiber all has confidential relation with production, purchase, processing, storage, transportation etc.Therefore, the mensuration of cotton moisture content all is necessary in the production and the process of circulation.The cotton moisture content assay method can be divided into direct determination method and indirect determination method two big classes substantially, and directly determination method is to measure the weight of cotton contained humidity and the dry weight of sample respectively according to cotton regain defined formula, calculates then and gets.The indirect determination method is to utilize some character of cotton fiber such as resistance, specific inductive capacity, microwave attenuation etc. in the moisture characteristic that does not have different numerical value simultaneously of fiber, again according to certain relation and structure, just can measure indirectly and directly read the numerical value of contained humidity by demarcating.Electrical measuring method (electric-resistivity method) is to utilize the moisture relation with its resistance of cotton to set up as the representative of indirect determination method, if volume, density and the temperature of cotton are fixed, regain of cotton and the relation between the resistance just change according to certain rules, at impressed voltage is under the situation of certain value, and electric current and mass specific resistance by cotton are inversely proportional to.
In the prior art, electrical measuring method is made up of the following step:
The first step: sampling;
Second step: adopt the double electrode plate method of clamping that the sample cotton is exerted pressure;
The 3rd step: between double electrode plate, apply voltage, measuring resistance; Cotton place is provided with temperature sensor at sample, measures the cotton temperature of sample;
The 4th step: the pass coefficient value by cotton fiber temperature, regain and the resistance value of demarcating carries out the temperature correction, and calculates the regain of cotton.
According to the regulation of standard GB 6102.2-85 " moisture regain rate of raw cotton test method electroprobe method " and in conjunction with the practical situations of electroprobe, the major parameter in the said method is:
1, sample size: 50 grams ± 5 grams;
2, pole plate area: 235 millimeters * 100 millimeters;
3, pressure: 735 newton (75 kilograms ± 5 kilograms);
4, measuring voltage: upper strata 360V ± 5V (corresponding regain 7%～12%), middle level 90V ± 2V (corresponding regain 4%～7%), the 45V ± 2V of lower floor (corresponding regain 8%～15%);
5, resistance value: cover regain---a resistance value logarithm value of national fibre metering station promulgation;
6, temperature correction: former with 26 ℃ be benchmark, offset is 0.1%/℃, issued the temperature correction chart below 7% in 76 years again, changed in 99 years with 20 ℃ be benchmark, offset is 0.115%/℃, the temperature correction chart below 7% has converted again simultaneously.
Standard GB 6102.2-85 " moisture regain rate of raw cotton test method electroprobe method " is the foundation of design electric-resistivity method electroprobe.But do not relate to normally used " middle level " and " lower floor " voltage range in the standard.This is because for a long time, and the custom (because of the restriction of the measuring technique level of the fifties, having to adopt the third gear measuring voltage could satisfy request for utilization) of the third gear measuring voltage of the invention fifties is being used in continuity always.
Utilize the electroprobe of above ultimate principle and method design a lot, front and back have experienced electron tube, three evolutions of semiconductor microactuator computer.In the prior art, MWS type micro computer electrical measurement device is the renewal product of traditional electroprobe.Because it and traditional electroprobe all are to design according to the regulation about the basic parameter of Electrical Measuring Instrument among the GB6102.2-85 " moisture regain rate of raw cotton test method electroprobe method ", so the two is structurally to have something in common.Such as parameters such as the textural element of surveying water sensor, nominal resistance, measuring voltages all is consistent.Difference is exactly the analog meter that replaces needle deflection with the microcomputer digital display meter, intuitively shows the measurement result value; Adopt single-chip microcomputer that the test and the computing of instrument are controlled automatically; Replace the thermosensitive resistance measurement temperature with semiconductor temperature sensor; Replace the hand-guided on/off with auto-pressure switch; Replace traditional spiral pressure device with quick plug-type pressing mechanism.In a word, one is tested, handled and be controlled to be to MWS type micro computer electrical measurement device collection.Specifically see Shaanxi science tech publishing house May in 1992 the 1st edition, " principle and the application guide of raw cotton moisture electroprobe " the 194th～251 page of comrade's Han Gang work.
Above-mentioned electrical measuring method and electroprobe are not remove the moisture in the cotton fiber and do not damaging under the situation of sample, just can detect the moisture of cotton fiber, and it is fast to have a test speed, and advantage that can METHOD FOR CONTINUOUS DETERMINATION, therefore are used widely in practice.But the time cross nearly thousand, said method and determining instrument reality should in more and more expose defective significantly:
1, the different regain scope of corresponding cotton, measuring voltage is divided the upper, middle and lower third gear.The measured value of stepping intersection there are differences (about 0.2%), and contradiction is bigger.Main cause is a third gear measuring voltage difference, and the higher institute of measuring voltage causes.
2, temperature correction disunity.Temperature difference scale mark on the instrument with 0.1%/℃ and 0.115%/℃ demarcation, the temperature correction chart below 7% then is with temperature and to survey water be linear equation in two unknowns, and temperature is worked out in-10 ℃～+ 26 ℃ scopes.Last year, particularly Xinjiang region record 7% when following, and temperature does not know what standard to carry out the temperature correction with but more than 26 ℃.
3, measurement verification is loaded down with trivial details.Each calibrating will be opened panel measuring voltage, and particularly 3 calibratings of temperature can't be accomplished under the condition of mobile calibrating of going to the countryside.
4,75 kilograms of pressure, labor intensity of operating staff is big, and panel operation spare is various, operation inconvenience.
5, the cotton sample size is had relatively high expectations (50 grams ± 5 grams), will join counter scale during use.
Because above-mentioned defective, resistance-type electrical measuring method and electroprobe bring inconvenience to the user in the prolonged application process, and have strong complaints in various places, that have even particularly thorny, therefore must make improvement to this.
The object of the invention provides a kind of quick, easy, practical resistance-type electrical measuring method and the electroprobe that utilizes this method design.
For achieving the above object, the technical scheme that the inventive method adopts is: a kind of cotton moisture content electrical measuring method, form by the following step:
The first step: cotton 50 grams ± 20 grams of materialsing;
Second step: adopt the double electrode plate method of clamping that the sample cotton is exerted pressure;
The 3rd step: between double electrode plate, apply DC voltage, measured resistance value; Cotton place is provided with temperature sensor at sample, measures the cotton temperature of sample;
The 4th step: by the cotton resistance value under 20 ℃ of standard temperatures and regain concern the cotton regain standard value of conversion sample, by the cotton temperature of actual measurement sample the regain standard value is carried out the temperature correction again, obtain sample cotton regain;
Cotton regain standard value of described sample and resistance reduction formula are: lgR=e+f * Wt
In the formula: lgR is the logarithm value of the cotton measuring resistance of sample;
Wt is the cotton regain standard value of sample;
E, f are experimental constant, and wherein, e is 5～15, and f is-0.2～-0.8;
In above-mentioned second step, described battery lead plate area is 14400mm
2± 50%, pressure is 98N (10 kilograms) ± 50%;
In above-mentioned the 3rd step, the measuring voltage that applies between the double electrode plate is 36V～1.5V;
In above-mentioned the 4th step, when the temperature extent of amendment was-20 ℃～+ 50 ℃, omnidistance unification was carried out the temperature correction by following formula,
The temperature correction formula is: W=Wt+Kw
Temperature modified value formula is: Kw=a * t+b * Wt-c * t * Wt-d
In the formula: W is the cotton regain of sample;
Wt is the cotton regain standard value of sample;
Kw is the temperature modified value;
T is the cotton temperature of sample;
A, b, c, d are experimental constant, and wherein, a is 0.01～0.08, and b is 0.20～1.40, and c is 0.01～1.00, and d is 0.50～3.00;
Draw the cotton regain of sample.Above experimental constant all can obtain by experiment.
In the technique scheme, the optimal parameter of described method is; The battery lead plate area is 180mm * 80mm, and pressure is 98N ± 20%; The measuring voltage that applies between the double electrode plate is 12V.
In the technique scheme, the described mode that the sample cotton is exerted pressure has two kinds, and the one, adopt pressurization methods, promptly only the sample cotton is applied authorised pressure (prior art adopt be exactly this mode).The 2nd, adopt level pressure spacing mode, promptly when setting is exerted pressure, set the distance between the double electrode plate, this mode best results.
For achieving the above object, the technical scheme that electroprobe of the present invention adopts is: a kind of cotton moisture content electroprobe, be made up of cabinet, pressure device and single chip computer measurement display system, the single chip computer measurement display system comprises surveys water circuit, temperature measurement circuit, analog to digital conversion circuit, Single Chip Microcomputer (SCM) system, display circuit, measuring voltage generation circuit, D.C. regulated power supply.Described pressure device is the level pressure spacing structure, form by sample box, two electrode plate and elastic pressure mechanism, elastic pressure mechanism is made up of Elastic Sliding mechanism, leverage and the lever position limiting structure of the stack in parallel with spring of sliding sleeve structure, leverage is provided with supporting-point, application point and spot pressure, supporting-point and application point are located at the two ends of lever respectively, spot pressure is located between supporting-point and the application point, and supporting-point and support are hinged, and spot pressure and Elastic Sliding mechanism are hinged; Sample box is a worn-out mouth container up, and leverage is positioned at the sample box top, and its movement locus is provided with the lever position limiting structure; Two electrode plate are arranged up and down, the battery lead plate of below is horizontally fixed on the sample box bottom, the battery lead plate of top is fixed on Elastic Sliding mechanism bottom, and the battery lead plate that leverage drives the top stops from the parallel chance lever position limiting structure that moves to of the battery lead plate of the worn-out mouth down side of sample box.
In the technique scheme, described " elastic pressure mechanism " is upperseat concept, and this case is meant the artificial device for exerting of mechanicalness.Described " lever position limiting structure " also is upperseat concept, is meant the structure of restriction leverage movement position (referring to that specifically lever is around the pin joint rotational angle).Described " supporting-point " just is meant the fulcrum of lever; " application point " is manual pressing position; " spot pressure " is lever by battery lead plate to position that the cotton sample is exerted pressure.
The Elastic Sliding mechanism of described sliding sleeve structure stack in parallel with spring is made up of inner sleeve, outer sleeve and spring, on the barrel of inner sleeve and outer sleeve, one has the long hole shape chute, another is screwed with stop screw, inner sleeve cooperates with outer sleeve and stop screw places chute to constitute the position-limit mechanism that endwisely slips, spring places in the two sleeve tubes, and spring one end is provided with and compresses plug screw, compresses plug screw and is threaded with inner sleeve or outer sleeve barrel.
Described leverage is made of two depression bars that be arranged in parallel, a fixedly connected handle between the application point of two depression bars, hinged between the supporting-point of two depression bars through transverse axis and support, be provided with a supporting plate between the spot pressure of two depression bars, supporting plate is coaxial hinged with two depression bars, and the parallel axes of axis and transverse axis, supporting plate is fixedlyed connected with Elastic Sliding mechanism.
Described lever position limiting structure is made of the casing top, establishes the push button Test Switchboard on the casing position of handle correspondence, and handle contacts with Test Switchboard under pressurized state.
In the technique scheme,, also be provided with voice reader and print interface circuit in the described single chip computer measurement display system in order to strengthen the function of electroprobe.
The operating process of electroprobe of the present invention and principle of work: weighing sample cotton 50 grams ± 20 grams, carried handle, leverage is mentioned the upper electrode plate by Elastic Sliding mechanism, open sample box, sample is put into sample box, hold the downward pressing of handle, at this moment, the battery lead plate that the pin joint of leverage around the supporting-point place rotated and drove by Elastic Sliding mechanism the top moves from the battery lead plate of the worn-out mouth down side of sample box is parallel, because the parallel clamping of two electrode plate also acts on the cotton sample, under the effect of leverage and spring, the cotton sample is compressed, and compression process to leverage is met lever position limiting structure place and stopped.By above principle as can be seen, the setting of lever position limiting structure makes the distance between two electrode plate in the utility model become spacing structure; And the setting of spring makes the utility model become the level pressure structure, and the big I of pressure is regulated by compressing plug screw.When the casing of handle correspondence is provided with Test Switchboard, the last pressing Test Switchboard of handle starts electroprobe, survey water circuit and temperature measurement circuit and record a numerical value respectively, this numerical value is sent into Single Chip Microcomputer (SCM) system through analog to digital conversion circuit, the resistance of sample cotton machine software as calculated is converted into the cotton regain standard value of sample, the temperature revision program is revised the regain standard value according to observed temperature again and is drawn the cotton regain of sample, and at this moment, single-chip microcomputer shows regain automatically by display circuit.If be provided with voice reader and print interface circuit, printer, at this moment, the voice reader is quoted the regain survey measurements, and printer is got measurement result.
Because the technique scheme utilization, the present invention compared with prior art has following advantage:
1, because electrical measuring method of the present invention and electroprobe adopt the regain of gamut, disposable measurement cotton in regain is 3%～20% scope, measuring voltage stepping not compared with prior art, traditional method and monopolization have in the past thoroughly been broken, overcome the technical prejudice that must adopt the voltage stepping when measuring the cotton regain, bring great convenience its obvious technical effects for the measurement of cotton regain.
2, because electrical measuring method of the present invention and electroprobe temperature correction whole process using linear equation in two unknowns in-20 ℃+50 ℃ scopes, eliminated the disunity of temperature correction in the past, even the phenomenon of contradiction appears, this is once breakthrough and the innovation that solves temperature correction problem during the cotton regain is measured, this not only makes electrical measuring method be improved and improve, and makes the inventive method become simple, reasonable and feasible.
3, because electrical measuring method of the present invention and electroprobe have dwindled the battery lead plate area, do the volume that not only helps dwindling electroprobe like this, and can keep measuring stable, therefore evidence based on the inventive method does not compared with prior art reduce measuring accuracy, so the effect of design is fairly obvious like this.
4, because electrical measuring method of the present invention and electroprobe are reduced to 98N (10 kilograms) with original 75 kilograms of pressure, have compared with prior art alleviated labour intensity, but remained unchanged, especially be fit to portable electroprobe and adopt through the repetition test accuracy of measurement.
5, electrical measuring method of the present invention and electroprobe measurement verification only need resistance box, 1 calibrating of pressure and temperature, three top indexs, the calibrating of having saved 3 of measuring voltage and temperature, and calibrating does not need to open panel taking-up movement.
6, because electroprobe of the present invention adopts level pressure, spacing formula structure, have the pressure negative feedback, guaranteeing to measure on the basis of precision, adaptability to sample size obviously strengthens, through test, the sample size franchise can reach 50 grams ± 20 grams, increases by 4 times than original constant-pressure type.Concrete principle is as follows:
According to cotton electric conductivity and pressure, density and distance relation (pressure ↑---density ↑; Density ↑---resistance ↓; Distance ↑---resistance ↑):
Constant-pressure type: sample size ↑-distance ↑-resistance ↑
Level pressure spacing formula:
7, pass through battery lead plate that Elastic Sliding mechanism drives top pressing up and down because the sample pole plate pressure apparatus of electroprobe of the present invention is a leverage, setting-out and pressurization are more easy fast.Especially spacing when the casing top, and when establishing the push button Test Switchboard on the casing position of handle correspondence, can obtain measurement result at once.
8, because electroprobe of the present invention adopts digitizer and single-chip microcomputer treatment technology, make this electroprobe be easy to realize automatic functions such as digital demonstration, statistics, voice and output print.
9, electroprobe volume-diminished to 350 of the present invention * 250 * 140 millimeters is about 1/2nd of 380 * 290 * 190 millimeters of existing electroprobes.
10, about electroprobe of the present invention weight saving to 5 kilogram, be 1/2nd of existing electroprobe.
Accompanying drawing 1 is electroprobe example structure cut-open view of the present invention (this figure is the state of pressing handle);
Accompanying drawing 2 is the vertical view of Fig. 1 of the present invention;
Accompanying drawing 3 is electroprobe example structure cut-open view of the present invention (this figure is the state of mentioning handle);
Accompanying drawing 4 is electroprobe theory diagram of the present invention.
In the above accompanying drawing: [1], sample box; [2], battery lead plate; [3], depression bar; [4], handle; [5], inner sleeve; [6], outer sleeve; [7], spring; [8], supporting plate; [9], compress plug screw; [10], support; [11], transverse axis; [12], stop screw; [13], chute; [14], Test Switchboard; [15], cap; [16], reed; [17], pressing plate; [18], temperature sensor; [19], banking stop; [20], casing; [21], battery case; [22], single chip computer measurement display system.
Below in conjunction with drawings and Examples the present invention is further described:
Embodiment one: a kind of cotton moisture content electrical measuring method, form by the following step:
The first step: cotton 50 grams ± 20 grams of materialsing;
Second step: adopt the double electrode plate method of clamping that the sample cotton is exerted pressure, the battery lead plate area is 180mm * 80mm, and pressure is 98N ± 20%;
The 3rd step: between double electrode plate, apply DC voltage 12V, measured resistance value; Cotton place is provided with temperature sensor at sample, measures the cotton temperature of sample;
The 4th step: by the cotton resistance value under 20 ℃ of standard temperatures and regain concern the cotton regain standard value of conversion sample, described sample cotton regain standard value and resistance reduction formula are: lgR=e+f * Wt
In the formula: lgR is the logarithm value of the cotton measuring resistance of sample;
Wt is the cotton regain standard value of sample;
E, f are experimental constant, and wherein, e is 8.52, and f is-0.31;
By the cotton temperature of actual measurement sample the regain standard value is carried out the temperature correction again, when the temperature extent of amendment was-20 ℃～+ 50 ℃, omnidistance unification was carried out the temperature correction by following formula,
The temperature correction formula is: W=Wt+Kw
Temperature modified value formula is: Kw=a * t+b * Wt-c * t * Wt-d
In the formula: W is the cotton regain of sample;
Wt is the cotton regain standard value of sample;
Kw is the temperature modified value;
T is the cotton temperature of sample;
A, b, c, d are experimental constant, and wherein, a is 0.03, and b is 0.45, and c is 0.02, and d is 1.26;
Draw the cotton regain of sample.Above experimental constant all can obtain by experiment.
Embodiment two: referring to accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4, a kind of cotton moisture content electroprobe, be made up of cabinet, pressure device and single chip computer measurement display system [22], single chip computer measurement display system [22] comprises surveys water circuit, temperature measurement circuit, analog to digital conversion circuit, Single Chip Microcomputer (SCM) system, display circuit, measuring voltage circuit, voice reader, print interface circuit and D.C. regulated power supply.Resistance sensor---the battery lead plate area is 180mm * 80mm in the survey water circuit.Analog to digital conversion circuit adopts two TLC1549 integrated circuit, and wherein one is connected in the survey water circuit, and another piece is connected in the temperature measurement circuit.Single-chip microcomputer adopts 8051 integrated chips in the Single Chip Microcomputer (SCM) system, and extended memory adopts the 24C16 integrated circuit.The measuring voltage circuit produces 12V.Software is pressed the flow scheme design of embodiment one.
Described pressure device is spacing constant-pressure type structure (the level pressure value is 98N ± 20%), is made up of sample box [1], two electrode plate [2] and elastic pressure mechanism.Described elastic pressure mechanism is made up of Elastic Sliding mechanism, leverage and lever position limiting structure.Leverage is provided with supporting-point, application point and spot pressure, and supporting-point and application point are located at the two ends of lever respectively, and spot pressure is located between supporting-point and the application point, and supporting-point and support are hinged, and spot pressure and Elastic Sliding mechanism are hinged.
Described leverage is made of two depression bars [3] that be arranged in parallel, a fixedly connected handle [4] between the application point of two depression bars [3], hinged between the supporting-point of two depression bars [3] through transverse axis [11] and support [10], be provided with a supporting plate [8] between the spot pressure of two depression bars [3], supporting plate [8] is coaxial hinged with two depression bars [3], and the parallel axes of axis and transverse axis [11], supporting plate [8] is fixedlyed connected with Elastic Sliding mechanism.
Described Elastic Sliding mechanism is made of the stack in parallel with spring [7] of sliding sleeve structure, sliding sleeve is made up of inner sleeve [5] and outer sleeve [6], have long hole shape chute [13] on the barrel of outer sleeve [6], be screwed with stop screw [12] on the barrel of inner sleeve [5], inner sleeve [5] cooperates with outer sleeve [6] and stop screw [12] places chute [13] to constitute the position-limit mechanism that endwisely slips, spring [7] places in the two sleeve tubes, the top of spring [7] is provided with and compresses plug screw [9], compressing plug screw [9] is threaded with outer sleeve [6] barrel, the top of outer sleeve [6] is provided with cap [15], opens cap [15] and can compress plug screw [9] adjusting pressure size by turning.
Described sample box [1] is a worn-out mouth container up, and leverage is positioned at sample box [1] top, and its movement locus is provided with the lever position limiting structure; Two electrode plate [2] arrange that up and down the battery lead plate of below [2] is horizontally fixed on sample box [1] bottom, and the battery lead plate of below [2] is provided with the hole, is provided with temperature sensor [18] in the hole.The battery lead plate [2] of top is fixed on inner sleeve [5] bottom through pressing plate [17], and the battery lead plate [2] that leverage drives the top stops from the parallel chance lever position limiting structure that moves to of the battery lead plate [2] of the worn-out mouth down side of sample box [1].
Described lever position limiting structure is made of casing [20] top, establishes push button Test Switchboard [14] on casing [20] position of handle [4] correspondence, and handle [4] contacts and connect test circuit with Test Switchboard [14] under pressurized state.In order to guarantee that depression bar [3] does not contact under non-pressurized state with Test Switchboard [14], is provided with a reed [16] between depression bar [3] and casing [20].For battery lead plate [2], pressing plate [17], inner sleeve [5] and the outer sleeve [6] that guarantees the top passes in and out worn-out mouthful of sample box [1] smoothly, fixing a banking stop [19] near on the supporting plate [8] of depression bar [3].When lifting handle [4], because leverage and supporting plate [8] are hinged, banking stop [19] plays the effect of restriction pin joint corner angle, thereby makes the battery lead plate [2] of top and pressing plate [17] pass in and out worn-out mouthful of sample box [1] smoothly.
Claims (10)
1, a kind of cotton moisture content electrical measuring method, form by the following step:
The first step: cotton 50 grams ± 20 grams of materialsing;
Second step: adopt the double electrode plate method of clamping that the sample cotton is exerted pressure;
The 3rd step: between double electrode plate, apply voltage, measured resistance value; Cotton place is provided with temperature sensor at sample, measures the cotton temperature of sample;
The 4th step: by the cotton resistance value under 20 ℃ of standard temperatures and regain concern the cotton regain standard value of conversion sample, by the cotton temperature of actual measurement sample the regain standard value is carried out the temperature correction again, obtain sample cotton regain;
Cotton regain standard value of described sample and resistance reduction formula are: lgR=e+f * Wt
In the formula: lgR is the logarithm value of the cotton measuring resistance of sample;
Wt is the cotton regain standard value of sample;
E, f are experimental constant, and wherein, e is 5～15, and f is-0.2～-0.8;
It is characterized in that:
In above-mentioned second step, described battery lead plate area is 14400mm
2± 50%, pressure is 98N ± 50%;
In above-mentioned the 3rd step, the measuring voltage that applies between the double electrode plate is 36V～1.5V;
In above-mentioned the 4th step, when the temperature extent of amendment was-20 ℃～+ 50 ℃, omnidistance unification was carried out the temperature correction by following formula,
The temperature correction formula is: W=Wt+Kw
Temperature modified value formula is: Kw=a * t+b * Wt-c * t * Wt-d
In the formula: W is the cotton regain of sample;
Wt is the cotton regain standard value of sample;
Kw is the temperature modified value;
T is the cotton temperature of sample;
A, b, c, d are experimental constant, and wherein, a is 0.01～0.08, and b is 0.20～1.40, and c is 0.01～1.00, and d is 0.50～3.00;
Draw the cotton regain of sample.
2, electrical measuring method according to claim 1 is characterized in that: described battery lead plate area is 180mm * 80mm, and pressure is 98N ± 20%; The measuring voltage that applies between the double electrode plate is 12V.
3, electrical measuring method according to claim 1 and 2 is characterized in that: the described sample cotton is exerted pressure adopted level pressure spacing mode, promptly when setting is exerted pressure, sets the distance between the double electrode plate.
4, electrical measuring method according to claim 1 and 2 is characterized in that: described to the sample cotton employing pressurization methods of exerting pressure, promptly only the sample cotton is applied authorised pressure.
5, a kind of cotton moisture content electroprobe, by cabinet, pressure device and single chip computer measurement display system are formed, the single chip computer measurement display system comprises the survey water circuit, temperature measurement circuit, analog to digital conversion circuit, Single Chip Microcomputer (SCM) system, display circuit, measuring voltage produces circuit, D.C. regulated power supply, it is characterized in that: described pressure device is the level pressure spacing structure, by sample box [1], two electrode plate [2] and elastic pressure mechanism form, elastic pressure mechanism is by the Elastic Sliding mechanism of sliding sleeve structure with spring [7] stack in parallel, leverage and lever position limiting structure are formed, leverage is provided with supporting-point, application point and spot pressure, supporting-point and application point are located at the two ends of lever respectively, spot pressure is located between supporting-point and the application point, supporting-point and support are hinged, and spot pressure and Elastic Sliding mechanism are hinged; Sample box [1] is a worn-out mouth container up, and leverage is positioned at sample box [1] top, and its movement locus is provided with the lever position limiting structure; Two electrode plate [2] are arranged up and down, the battery lead plate [2] of below is horizontally fixed on sample box [1] bottom, the battery lead plate [2] of top is fixed on Elastic Sliding mechanism bottom, and the battery lead plate [2] that leverage drives the top stops from the parallel chance lever position limiting structure that moves to of the battery lead plate [2] of the worn-out mouth down side of sample box [1].
6, electroprobe according to claim 5, it is characterized in that: the Elastic Sliding mechanism of described sliding sleeve structure and spring [7] stack in parallel is by inner sleeve [5], outer sleeve [6] and spring [7] are formed, on the barrel of inner sleeve [5] and outer sleeve [6], one has long hole shape chute [13], another is screwed with stop screw [12], inner sleeve [5] cooperates with outer sleeve [6] and stop screw [12] places chute [13] to constitute the position-limit mechanism that endwisely slips, spring [7] places in the two sleeve tubes, spring [7] one ends are provided with and compress plug screw [9], compress plug screw [9] and are threaded with inner sleeve [5] or outer sleeve [6] barrel.
7, electroprobe according to claim 5, it is characterized in that: described lever position limiting structure is made of casing [20] top, establish push button Test Switchboard [14] on casing [20] position of handle [4] correspondence, handle [4] contacts with Test Switchboard [14] under pressurized state.
8, electroprobe according to claim 5, it is characterized in that: described leverage is made of two depression bars [3] that be arranged in parallel, a fixedly connected handle [4] between the application point of two depression bars [3], hinged between the supporting-point of two depression bars [3] through transverse axis [11] and support [10], be provided with a supporting plate [8] between the spot pressure of two depression bars [3], supporting plate [8] is coaxial hinged with two depression bars [3], and the parallel axes of axis and transverse axis [11], and supporting plate [8] is fixedlyed connected with Elastic Sliding mechanism.
9, electroprobe according to claim 5 is characterized in that: also be provided with the voice reader in the described single chip computer measurement display system.
10, electroprobe according to claim 5 is characterized in that: also be provided with print interface circuit in the described single chip computer measurement display system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108102 CN1220051C (en) | 2001-02-28 | 2001-02-28 | Cotton moisture electric measuring method and electric measurer thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01108102 CN1220051C (en) | 2001-02-28 | 2001-02-28 | Cotton moisture electric measuring method and electric measurer thereof |
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| CN1220051C CN1220051C (en) | 2005-09-21 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698974B (en) * | 2009-11-19 | 2011-11-16 | 苏州科慧电子技术研究所(有限公司) | Measurement instrument of moisture regaining rate of cotton wool |
| CN103308565A (en) * | 2013-07-03 | 2013-09-18 | 苏州市光华电测技术研究所 | Cotton bale water measurement method |
| CN106679720A (en) * | 2016-12-17 | 2017-05-17 | 西安阿尔特测控技术有限公司 | Cotton detection control system and measurement and control method thereof |
| CN110409750A (en) * | 2019-07-09 | 2019-11-05 | 广西大学 | Wood electric heating floor and its large format effective production process |
-
2001
- 2001-02-28 CN CN 01108102 patent/CN1220051C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101698974B (en) * | 2009-11-19 | 2011-11-16 | 苏州科慧电子技术研究所(有限公司) | Measurement instrument of moisture regaining rate of cotton wool |
| CN103308565A (en) * | 2013-07-03 | 2013-09-18 | 苏州市光华电测技术研究所 | Cotton bale water measurement method |
| CN103308565B (en) * | 2013-07-03 | 2015-05-13 | 苏州市光华电测技术研究所 | Cotton bale water measurement method |
| CN106679720A (en) * | 2016-12-17 | 2017-05-17 | 西安阿尔特测控技术有限公司 | Cotton detection control system and measurement and control method thereof |
| CN110409750A (en) * | 2019-07-09 | 2019-11-05 | 广西大学 | Wood electric heating floor and its large format effective production process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1220051C (en) | 2005-09-21 |
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