CN103091166A - Method, device and system for determining compressive strength of coated seed - Google Patents
Method, device and system for determining compressive strength of coated seed Download PDFInfo
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- CN103091166A CN103091166A CN2013100202545A CN201310020254A CN103091166A CN 103091166 A CN103091166 A CN 103091166A CN 2013100202545 A CN2013100202545 A CN 2013100202545A CN 201310020254 A CN201310020254 A CN 201310020254A CN 103091166 A CN103091166 A CN 103091166A
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Abstract
The invention provides a method, a device and a system for determining compressive strength of a coated seed. The method comprises the following steps of: acquiring the real-time pressure applied on a coated seed; monitoring the change of the real-time pressure, so as to obtain the reduction difference of the real-time pressure; and calculating the compressive strength value of the coated seed according to the real-time pressure reduction difference. With the method, the device and the system for determining the compressive strength of the coated seed, the problems of poor accuracy and low automation degree in the detection on the compressive strength of the coated seed are solved, the detection accuracy is improved, the detection efficiency is improved, the operation is simple and convenient, and the required human input is small.
Description
Technical field
The present invention relates to the capsuled seed detection technique, relate in particular to a kind of method, Apparatus and system of capsuled seed compressive strength determination.
Background technology
Capsuled seed is the seed that seed obtains through the pill technical finesse.The seed-pelleting technology can be with the seed of small-sized seed or surface imperfection; by pellet processing machine, auxiliary agent and powdery inert substance are wrapped in the surface of the seed; on the basis of the biological characteristics that does not change former seed; increase quality and the volume of seed, form have a certain size, some strength, ganoid spherical or torispherical particle.Capsuled seed not only can make Mechanization sowing be achieved, and can improve and sow evenly, realizes Precise sowing and improves the germination percentage of seed and the regularity of emerging, and has advantages of that also province's kind, saving of labor, province's fertilizer, province's medicine, volume increase, joint prop up.
In the links such as storage, carrying and operation; owing to being collided, pushing and the effect such as friction; pillization is incomplete, very easily cracking or the fragmentation of the ropy capsuled seed of pillization, and therefore, compressive strength is one of important indicator in the capsuled seed quality inspection.At present, the assay method that also there is no feasible, accurate and robotization for the compressive strength of capsuled seed, the method that generally adopts is, to have the batch to be tested capsuled seed of setting the grain number is positioned between two transparency glass plates, add counterweight on upper glass plate, in the mode of manual observation, observe the cracking opportunity of capsuled seed, and added counterweight calculates the compression strength value of this batch capsuled seed during according to cracking.
Obviously, existing capsuled seed compressive strength determination method, detection efficiency and precision are lower, and labor intensive, therefore, can accurately, automatically measure the method for capsuled seed compressive strength in the urgent need to providing a kind of.
Summary of the invention
The invention provides a kind of method, Apparatus and system of capsuled seed compressive strength determination, to solve the technical matters that in prior art, capsuled seed compressive strength determination efficient is low and degree of accuracy is low.
For achieving the above object, the invention provides a kind of method of capsuled seed compressive strength determination, comprising:
Gather the real-time pressure that capsuled seed bears;
Monitor described real-time pressure and change, obtain real-time pressure and reduce difference;
Reduce difference according to described real-time pressure, calculate the compression strength value of described capsuled seed.
The present invention also provides a kind of device of capsuled seed compressive strength determination, comprising:
The pressure acquisition module is used for gathering the real-time pressure that capsuled seed bears;
Identification module is used for monitoring described real-time pressure and changes, and obtains real-time pressure and reduces difference;
Computing module is used for reducing difference according to described real-time pressure, calculates the compression strength value of described capsuled seed.
In addition, the present invention also provides a kind of system of capsuled seed compressive strength determination, comprises determination experiment platform and controller, and wherein, described controller comprises the device of capsuled seed compressive strength determination provided by the present invention; Described determination test platform comprises support unit, test cell, mobile unit and the unit of exerting pressure;
Described support unit comprises base, riser and adjutage, and described riser is arranged on described base sidepiece, and described adjutage one end is connected with described riser upper end, and described adjutage laterally is suspended from described base top;
Described test cell comprises blowing ware, test board and pressure transducer, described blowing ware is arranged on described test board, in order to place tested capsuled seed, described pressure transducer is fixedly installed between described test board and described base, and described pressure transducer is sent to described controller with the pressure information that gathers;
Described mobile unit comprises slide rail fixed head, slide rail and mobile platform, and described slide rail fixed head is fixedly connected with described adjutage, and described slide rail is arranged on described slide rail fixed head and perpendicular to described test board, and described mobile platform is slidably installed on described slide rail;
The described unit of exerting pressure comprises compression arm and the platform of exerting pressure, described compression arm is fixed on described mobile platform, the described platform of exerting pressure is fixedly connected with described compression arm lower end, be arranged at described blowing ware directly over, the described unit of exerting pressure is with moving under described mobile platform in the vertical direction, with to the capsuled seed continu to press in described blowing ware.
The method of capsuled seed compressive strength determination provided by the invention, Apparatus and system, the degree of accuracy that has solved the detection of capsuled seed compressive strength is hanged down and the low problem of robotization, has not only improved accuracy of detection, has promoted detection efficiency, and easy and simple to handle, reduce human input.
Description of drawings
The process flow diagram of the method for the capsuled seed compressive strength determination that Fig. 1 provides for the embodiment of the present invention;
The process flow diagram of step 102 in the method for the capsuled seed compressive strength determination that Fig. 2 provides for the embodiment of the present invention;
The process flow diagram of step 103 in the method for the capsuled seed compressive strength determination that Fig. 3 provides for the embodiment of the present invention;
The structural representation of the device of the compressive strength determination that Fig. 4 provides for the embodiment of the present invention;
The front view of the system of the capsuled seed compressive strength determination that Fig. 5 provides for the embodiment of the present invention;
Fig. 6 is the left view of the system of capsuled seed compressive strength determination shown in Figure 5;
Fig. 7 is the vertical view of the system of capsuled seed compressive strength determination shown in Figure 5.
Reference numeral:
The 1-base; The 2-pressure transducer; The 3-test board;
4-blowing ware; 5-Fibre Optical Sensor fixed block; The 6-Fibre Optical Sensor;
The 7-platform of exerting pressure; The 8-compression arm; The 9-mobile platform;
The 10-slide rail; The 11-motor; The 12-serial ports;
The 13-motor fixing plate; 14-slide rail fixed head; The 15-upper limit position switch;
The 16-triggering block; The 17-lower position switch; The 18-adjutage;
The 19-riser; The 20-shaft coupling; The 21-screw mandrel;
22-screw mandrel fixed block; The 23-bolt.
Embodiment
The process flow diagram of the method for the capsuled seed compressive strength determination that Fig. 1 provides for the embodiment of the present invention.As shown in Figure 1, the method for the present embodiment comprises:
The real-time pressure that step 101, collection capsuled seed bear.
Concrete, the pressure that capsuled seed bears is the pressure that a plurality of tested steamed stuffed bun seeds bear after evenly exerting pressure, the real-time pressure that the capsuled seed that gathers bears can be by the pressure transducer Real-time Collection, carries out the digital signal that obtains after the processing such as analog to digital conversion, filtering and amplification through the signal condition module.
Step 102, the described real-time pressure of monitoring change, and obtain real-time pressure and reduce difference.
Concrete, when the real-time pressure that gathers in step 101 occurs to reduce, calculate in real time real-time pressure and reduce difference.In the mensuration process, capsuled seed bears continuous pressure, the variation of real-time pressure has reflected the variation of capsuled seed dressing state, if significantly reducing appears in real-time pressure, the dressing cracking of capsuled seed is described, therefore, can change by the monitoring real-time pressure, reduce difference as the foundation of calculating compressive strength with the real-time pressure that obtains.
Step 103, reduce difference according to described real-time pressure, calculate the compression strength value of described capsuled seed.
By being reduced difference, the real-time pressure that obtains in step 102 compares, the judgement capsuled seed reaches its maximum pressure that can bear and the moment of cracking, real-time pressure reduction difference to the capsuled seed cracking moment is calculated, thereby obtains the compression strength value of capsuled seed.
The method of the capsuled seed compressive strength determination of the present embodiment, monitor by the real-time pressure that the collection capsuled seed is born, obtain real-time pressure and reduce difference, calculate the compression strength value of capsuled seed, can significantly improve efficient and the precision of capsuled seed compressive strength index determining, reduce human input.
Further, the process flow diagram of step 102 in the method for the capsuled seed compressive strength determination that Fig. 2 provides for the embodiment of the present invention, as shown in Figure 2, the step 102 of the method for the capsuled seed compressive strength determination of the present embodiment specifically comprises:
Step 102a, comparison current time force value and previous moment force value, less than described last collection constantly during force value, setting described previous moment force value is the pressure decreased initial value when described current time force value.
Particularly, pressure signal by the sensor collection is converted into real-time force value, in real time current time force value and previous moment force value are compared, when if the current time force value gathers constantly force value less than upper one, illustrate that force value reduces, the dressing of capsuled seed might break, and at this moment, setting described previous moment force value is the pressure decreased initial value.
Step 102b, according to the pressure decreased initial value, calculate described real-time pressure and reduce difference.
As initial time, the force value that gathers after the pressure decreased initial value is deducted chronologically obtains real-time pressure and reduces difference with moment of pressure decreased initial value.
Further, the process flow diagram of step 103 in the method for the capsuled seed compressive strength determination that Fig. 3 provides for the embodiment of the present invention, as shown in Figure 3, the step 103 of the method for the capsuled seed compressive strength determination of the present embodiment specifically comprises:
When reducing appears in the force value that gathers, variation has occured in the dressing that capsuled seed is described, but can not illustrate that capsuled seed reaches the maximum pressure that it can bear, cracking, only have when real-time pressure reduction difference exceeds the demarcation threshold value and could judge the capsuled seed cracking, therefore, the real-time pressure reduction difference and the pressure threshold that obtain chronologically in step 102 are compared one by one, when real-time pressure reduction difference exceeds the demarcation threshold value, can judge the capsuled seed cracking, the pressure decreased initial value of setting this real-time pressure reduction difference is pressure threshold.
The pressure that is equated due to tested capsuled seed, therefore, the pressure threshold that step 103a is obtained obtains the compression strength value of capsuled seed divided by the total grain of tested capsuled seed number.
The method of the capsuled seed compressive strength determination that provides based on above-described embodiment, the present invention also provides a kind of device of capsuled seed compressive strength determination, the structural representation of the device of the capsuled seed compressive strength determination that Fig. 4 provides for the embodiment of the present invention, as shown in Figure 4, the device of the present embodiment comprises pressure acquisition module 51, identification module 52 and computing module 53.
Wherein, pressure acquisition module 51 is used for gathering the real-time pressure that capsuled seed bears; Identification module 52 is connected with pressure acquisition module 51, is used for monitoring described real-time pressure and changes, and obtains real-time pressure and reduces difference; Computing module 53 is connected with identification module 52, is used for reducing difference according to described real-time pressure, calculates the compression strength value of described capsuled seed.
Each functional module of the device of the present embodiment can be used for carrying out the flow process as shown in Figure 1 that said method embodiment provides, and its specific works principle repeats no more, and sees the description of said method embodiment for details.
The device of the present embodiment, monitor by the real-time pressure that the collection capsuled seed is born, obtain real-time pressure and reduce difference, calculate the compression strength value of capsuled seed, realize precision and the automatic assay of capsuled seed compressive strength, not only improved accuracy of detection, promoted detection efficiency, and easy and simple to handle, liberated manpower.
Further, concrete relatively current time force value and the previous moment force value of being used for of the identification module of the present embodiment 52, less than described last collections moment during force value, setting described previous moment force value is the pressure decreased initial value when described current time force value; According to the pressure decreased initial value, calculate described real-time pressure and reduce difference.
Further, the computing module of the present embodiment 53 is concrete is used in real time that more described real-time pressure reduces difference and demarcates threshold value, and setting the pressure decreased initial value that the real-time pressure that exceeds described demarcation threshold value reduces difference is pressure threshold; Divided by the total grain of described capsuled seed number, obtain the compression strength value of described capsuled seed by described pressure threshold.
The functional unit of computing module 53 can be used for carrying out the flow process of the embodiment of the step 103 that said method embodiment provides, and its specific works principle repeats no more, and sees the description of said method embodiment for details.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can be completed by the hardware that programmed instruction is correlated with, aforesaid program can be stored in a computer read/write memory medium, this program is carried out the step that comprises said method embodiment when carrying out; And aforesaid storage medium comprises: the various media that can be program code stored such as ROM, RAM, magnetic disc or CD.
The device of the capsuled seed compressive strength determination that provides based on above-described embodiment, the present invention also provides a kind of system of capsuled seed compressive strength determination.The front view of the system of the capsuled seed compressive strength determination that Fig. 5 provides for the embodiment of the present invention; Fig. 6 is the left view of the system of capsuled seed compressive strength determination shown in Figure 5; Fig. 7 is the vertical view of the system of capsuled seed compressive strength determination shown in Figure 5.In conjunction with Fig. 5, Fig. 6, shown in Figure 7, the system of the present embodiment comprises determination test platform and controller, and wherein, controller comprises the device of the capsuled seed compressive strength determination that any embodiment of the present invention provides.The determination experiment platform comprises support unit, test cell, mobile unit and the unit of exerting pressure.
The support unit comprises base 1, riser 19 and adjutage 18, and riser 19 is arranged on base 1 sidepiece, and adjutage 18 1 ends are connected with riser 19 upper ends, and adjutage laterally is suspended from base 1 top.
Test cell comprises blowing ware 4, test board 3 and pressure transducer 2, can be provided with the groove of equilateral triangle on test board 3, be placed with tested capsuled seed in blowing ware 4, blowing ware 4 can be the equilateral triangle shape, blowing ware 4 matches with the equilateral triangle connected in star of test board 3 and is arranged on test board 3, can be for the capsuled seed of different-grain diameter size, change the blowing ware 4 supporting with test board 3, pressure transducer 2 is fixedly installed between test board 3 and base 1, and pressure transducer 2 is sent to controller with the pressure information that gathers.
Mobile unit comprises slide rail fixed head 14, slide rail 10 and mobile platform 9, slide rail fixed head 14 is fixedly connected with adjutage 18, slide rail 10 is arranged on slide rail fixed head 14 and perpendicular to test board 3, mobile platform 9 is slidably installed on slide rail 10, and slide rail 10 is connected with mobile platform 9 is nested.
Exerting pressure, the unit comprises compression arm 8 and the platform 7 of exerting pressure, compression arm 8 is fixed on mobile platform 9, the platform 7 of exerting pressure is fixedly connected with compression arm 8 lower ends, be arranged at blowing ware 4 directly over, exert pressure the unit with moving under mobile platform 9 in the vertical directions, with to the capsuled seed continu to press in blowing ware 4, the capsuled seed in blowing ware 4 has all born the pressure that is equal to.
Can also be connected with the signal condition module between pressure transducer 2 and controller, the pressure that the tested capsuled seed of pressure transducer 2 Real-time Collections bears, controller receives the pressure information after analog to digital conversion, the pressure intensity value of the capsuled seed that the pressure information via controller obtains testing after processing, compare and calculating.
The system of the capsuled seed compressive strength determination that the present embodiment provides is achieved the precision of capsuled seed compressive strength and automatic assay, has not only improved accuracy of detection, has promoted detection efficiency, and easy and simple to handle, has liberated manpower.
Further, mobile unit also comprises motor 11 and screw mandrel 21, screw mandrel 21 1 ends are connected with motor 11 output shafts, the nut of screw mandrel 21 is arranged on mobile platform 9, motor 11 is used for receiving control signal driving leading screw 21 rotations that controller sends, and drives described mobile platform 9 by nut and moves on slide rail 10.Particularly, motor 11 is stepper motor preferably, screw mandrel 21 upper ends can be connected with motor 11 output shafts by shaft coupling 20, two screw mandrel fixed blocks 22 can be fixedly installed on slide rail fixed head 15, leading screw fixed block 22 inside are provided with bearing, screw mandrel 21 upper/lower terminals respectively with two screw mandrel fixed blocks 22 in bearing fit, the nut of screw mandrel 21 is fixedly connected with mobile platform 9, motor 11 drives leading screws 21 and rotates, and the nut by leading screw 21 drives mobile platform 9 and moves on slide rail 10.In addition, motor 11 is not limited to stepper motor, also can select the motor of energy linear movement output.
The motor driver of motor 11 is connected with controller by serial ports 12, is used for receiving the motor control signal that controller sends, move along slide rail 11 with driving institute mobile platform 9, and then exert pressure capsuled seed continu to press in 7 pairs of blowing wares 4 of platform of realization.
Further, the unit of exerting pressure also comprises Fibre Optical Sensor 6, Fibre Optical Sensor 6 is symmetrically fixed on by two Fibre Optical Sensor fixed blocks 5 platform 7 both side ends of exerting pressure, after Fibre Optical Sensor 6 is sensed capsuled seed, controller receives the trigger pip after the signal condition resume module, slows down so that controller is controlled motor 11.
Further again, be evenly distributed with a plurality of depressions for placing capsuled seed in blowing ware 4.Preferably, the blowing ware respectively is provided with a flat bottomed recess on 4 three angles, and three flat bottomed recess lines are equilateral triangle, according to 3 one side principles, can uniform stressed so that be put in three capsuled seeds in flat bottomed recess, can for the capsuled seed of different-grain diameter size, make the blowing ware 4 of different big or small flat bottomed recess.
In addition, the determination test platform also can comprise position-limiting unit, be used for controlling mobile platform 9 strokes, position-limiting unit comprises upper limit position switch 15, triggering block 16 and lower position switch 17, wherein, upper limit position switch 15 and lower position switch 17 are disposed on slide rail fixed head 14 sides up and down, and triggering block 16 is arranged on mobile platform 9 sides and between upper limit position switch 15 and lower position switch 17.
Upper limit position switch 15 is connected with lower position switch and is connected with controller by serial ports 12; triggering block 16 is used for induction upper limit position switch 15 or lower position switch 17; controller receives trigger pip; stop mobile to control mobile platform 9; prevent motor 11 overloads, protection motor 11 is worked in the safety moving scope.
It should be noted that at last: above each embodiment is not intended to limit only in order to technical scheme of the present invention to be described; Although with reference to aforementioned each embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme that aforementioned each embodiment puts down in writing, and perhaps some or all of technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the scope of various embodiments of the present invention technical scheme.
Claims (11)
1. the method for a capsuled seed compressive strength determination, is characterized in that, comprising:
Gather the real-time pressure that capsuled seed bears;
Monitor described real-time pressure and change, obtain real-time pressure and reduce difference;
Reduce difference according to described real-time pressure, calculate the compression strength value of described capsuled seed.
2. the method for capsuled seed compressive strength determination according to claim 1, is characterized in that, the described real-time pressure of described monitoring changes, and obtains real-time pressure reduction difference and comprise:
Relatively current time force value and previous moment force value, less than described last collections moment during force value, setting described previous moment force value is the pressure decreased initial value when described current time force value;
According to the pressure decreased initial value, calculate described real-time pressure and reduce difference.
3. the method for capsuled seed compressive strength determination according to claim 1, is characterized in that, reduces difference according to described real-time pressure, and the compression strength value that calculates described capsuled seed comprises:
More described real-time pressure reduces difference and demarcates threshold value in real time, and the pressure decreased initial value of setting the real-time pressure reduction difference that exceeds described demarcation threshold value is pressure threshold;
Divided by the total grain of described capsuled seed number, obtain the compression strength value of described capsuled seed by described pressure threshold.
4. the device of a capsuled seed compressive strength determination, is characterized in that, comprising:
The pressure acquisition module is used for gathering the real-time pressure that capsuled seed bears;
Identification module is used for monitoring described real-time pressure and changes, and obtains real-time pressure and reduces difference;
Computing module is used for reducing difference according to described real-time pressure, calculates the compression strength value of described capsuled seed.
5. the device of capsuled seed compressive strength determination according to claim 4, is characterized in that, described identification module specifically is used for:
Relatively current time force value and previous moment force value, less than described last collections moment during force value, setting described previous moment force value is the pressure decreased initial value when described current time force value;
According to the pressure decreased initial value, calculate described real-time pressure and reduce difference.
6. the device of capsuled seed compressive strength determination according to claim 4, is characterized in that, described computing module specifically is used for:
More described real-time pressure reduces difference and demarcates threshold value in real time, and the pressure decreased initial value of setting the real-time pressure reduction difference that exceeds described demarcation threshold value is pressure threshold;
Divided by the total grain of described capsuled seed number, obtain the compression strength value of described capsuled seed by described pressure threshold.
7. the system of a capsuled seed compressive strength determination, is characterized in that, comprises determination experiment platform and controller, and described controller comprises the device of the arbitrary described capsuled seed compressive strength determination of claim 4-6; Described determination test platform comprises support unit, test cell, mobile unit and the unit of exerting pressure;
Described support unit comprises base, riser and adjutage, and described riser is arranged on described base sidepiece, and described adjutage one end is connected with described riser upper end, and described adjutage laterally is suspended from described base top;
Described test cell comprises blowing ware, test board and pressure transducer, described blowing ware is arranged on described test board, in order to place tested capsuled seed, described pressure transducer is fixedly installed between described test board and described base, and described pressure transducer is sent to described controller with the pressure information that gathers;
Described mobile unit comprises slide rail fixed head, slide rail and mobile platform, and described slide rail fixed head is fixedly connected with described adjutage, and described slide rail is arranged on described slide rail fixed head and perpendicular to described test board, and described mobile platform is slidably installed on described slide rail;
The described unit of exerting pressure comprises compression arm and the platform of exerting pressure, described compression arm is fixed on described mobile platform, the described platform of exerting pressure is fixedly connected with described compression arm lower end, be arranged at described blowing ware directly over, the described unit of exerting pressure is with moving under described mobile platform in the vertical direction, with to the capsuled seed continu to press in described blowing ware.
8. the system of capsuled seed compressive strength determination according to claim 7, it is characterized in that, described mobile unit also comprises motor and screw mandrel, described screw mandrel one end is connected with described motor output shaft, the nut of described screw mandrel is arranged on described mobile platform, described motor is used for receiving the control signal driving leading screw rotation that described controller sends, and drives described mobile platform by described nut and moves on described slide rail.
9. the system of capsuled seed compressive strength determination according to claim 8, it is characterized in that, the described unit of exerting pressure also comprises Fibre Optical Sensor, described Fibre Optical Sensor is fixedly installed on the platform both side ends of exerting pressure, described Fibre Optical Sensor is sensed the backward described controller of described capsuled seed and is sent trigger pip, so that described controller is controlled described decelerating through motor.
10. the system of according to claim 7～9 arbitrary described capsuled seed compressive strength determinations, is characterized in that, is evenly distributed with a plurality of depressions be used to placing described capsuled seed in described blowing ware.
11. the system of according to claim 7～9 arbitrary described capsuled seed quality determinations is characterized in that, also comprises be used to the position-limiting unit of controlling described mobile platform stroke;
Described position-limiting unit comprises upper limit position switch, triggering block and lower position switch; Described upper limit position switch and lower position switch are disposed on described slide rail fixed head side up and down, and described triggering block is arranged on described mobile platform side and between described upper limit position switch and lower position switch;
Described triggering block is used for responding to described upper limit position switch or lower position switch, and sends trigger pip to described controller, stops mobile to control described mobile platform.
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| CN201310020254.5A CN103091166B (en) | 2013-01-18 | 2013-01-18 | Method, device and system for determining compressive strength of coated seed |
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| CN201310020254.5A CN103091166B (en) | 2013-01-18 | 2013-01-18 | Method, device and system for determining compressive strength of coated seed |
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| CN105067430A (en) * | 2015-07-14 | 2015-11-18 | 安徽海澄德畅电子科技有限公司 | Automatic testing device for pressure resistance of material |
| CN109142046A (en) * | 2017-06-16 | 2019-01-04 | 武汉理工大学 | A kind of hydrogel particle strength detection device and method |
| CN111458228A (en) * | 2020-03-31 | 2020-07-28 | 云南省烟草质量监督检测站 | Automatic measuring device for single-grain compressive strength conformity of tobacco coated and pelleted seeds |
| CN114544439A (en) * | 2022-02-16 | 2022-05-27 | 安徽省金皇种业有限公司 | Coated seed quality determination method |
| CN115266374A (en) * | 2022-07-14 | 2022-11-01 | 青岛神盾防水科技有限公司 | High-density polyethylene double-wall corrugated pipe performance detection device and detection method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105067430A (en) * | 2015-07-14 | 2015-11-18 | 安徽海澄德畅电子科技有限公司 | Automatic testing device for pressure resistance of material |
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| CN115266374A (en) * | 2022-07-14 | 2022-11-01 | 青岛神盾防水科技有限公司 | High-density polyethylene double-wall corrugated pipe performance detection device and detection method thereof |
| CN115266374B (en) * | 2022-07-14 | 2023-09-19 | 青岛神盾防水科技有限公司 | High-density polyethylene double-wall corrugated pipe performance detection device and detection method thereof |
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| CN103091166B (en) | 2014-11-19 |
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