CN201413283Y

CN201413283Y - Automatic detector for texture characteristics of rigidity and viscosity of cooked rice grain

Info

Publication number: CN201413283Y
Application number: CN2009200440928U
Authority: CN
Inventors: 周骥平; 高远; 高龙琴; 周建华; 高建和; 姜楠; 朱兴龙
Original assignee: Yangzhou University
Current assignee: Yangzhou University
Priority date: 2009-06-15
Filing date: 2009-06-15
Publication date: 2010-02-24
Anticipated expiration: 2019-06-15

Abstract

The utility model relates to an automatic detector for texture characteristics of rigidity and viscosity of a cooked rice grain. The automatic detector is characterized in that a motor is connected with a shaft, the shaft is connected with a cam, a guide rod is arranged below the cam, a spring is arranged on the guide rod, an upper measuring arm and a lower measuring arm are arranged below the guide rod and are connected on a box body, an upper movable block is arranged on the upper measuring arm, an upper fastening screw is arranged on the upper movable block, a pressure head is connected below the upper movable block, a lower movable block is arranged on the lower measuring arm, a lower fastening screw is arranged on the lower movable block, a tray is connected on the lower movable blockand faces right against the pressure head above, and strain gauges are arranged on the upper measuring arm and the lower measuring arm to form a differential bridge to a PC. The automatic detector overcomes the defects of poor accuracy of a texture analyzer and incapability of reflecting the changing relation between the two parameters of stress and deformation in the stress process of the cookedrice, and accurately and truly reflects the rigidity and viscosity of the cooked rice grain in quantification aiming at the detection on the texture characteristics of the cooked rice grain.

Description

The cooked rice grains automatic detector for textural properties of hardness and viscosity

Technical field

The utility model relates to the agricultural product detection technique, and is particularly a kind of at cooked rice grains hardness and viscosity matter structure feature automatic tester.

Background technology

Paddy rice is China people's a staple food crop, along with the improvement of development and national economy and people's living standard, the requirement of rice food flavor quality is improved constantly, and thus, need comprise that hardness etc. detects at the texture characteristic of the rice grain of rice.

Before the present utility model, matter structure instrument, physical properties of food analyser etc. are widely used in the context of detection of agricultural byproducts food flavor characteristic.But matter structure instrument itself is not to detect at the texture characteristic of cooked rice grains, has certain adaptability problem with its detection of doing the texture characteristics such as hardness, viscosity of ripe rice, is difficult to guarantee the accuracy of measurement result.In existing Measurement and analysis experiment, all be as measuring object with rice dumpling (or meal piece), it is difficult to accurately reflect texture characteristics such as the ripe rice of simple grain hardness and viscosity, and the parameter that is adopted when measurement result is analyzed (power---time curve) is difficult to the variation relation of the ripe rice of real reaction stressed and these two parameters of distortion in stressed process.

Summary of the invention

The purpose of this utility model just is to overcome above-mentioned defective, designs, develops a kind of novel cooked rice grains hardness and viscosity automatic tester.

The technical solution of the utility model is:

Cooked rice grains hardness and viscosity matter structure feature automatic tester, its major technique is characterised in that by automatic tester, data line, PC to be formed; In the automatic tester, be fixed on the motor coupling shaft on the support, axle connects cam, under cam guide rod is set, and is with spring on the guide rod; Gage beam, following gage beam on below guide rod, being provided with, last gage beam, following gage beam are connected on the casing, be socketed with movable block on the last gage beam, be provided with on the last movable block and tighten screw, connect pressure head below the last movable block,, trip bolt is set down on the following movable block being socketed with movable block down on the gage beam down, the following pallet that connects above the movable block, pallet is at top pressure head; At last gage beam, down on the gage beam foil gauge is set, per four are linked to be a full-bridge testing circuit, and two full-bridge circuits connect into a differential bridge, and output is connected to data collecting card, and data collecting card exports PC to.

Advantage of the present utility model and effect are specially the detection at the texture characteristic of cooked rice grains, can react hardness, the viscosity of cooked rice grains comparatively accurately, really, and hardness, the viscosity of cooked rice grains carried out quantization means, it provides the accurate data support for the rice hierarchical detection.

Description of drawings

Fig. 1---the utility model measuring system schematic perspective view.

Fig. 2---the utility model surface structure schematic perspective view.

Fig. 3---one of the utility model principle schematic.

Fig. 4---two of the utility model principle schematic.

Fig. 5---three of the utility model principle schematic.

Fig. 6---four of the utility model principle schematic.

Fig. 7---five of the utility model principle schematic.

Fig. 8---six of the utility model principle schematic.

Seven (A, B) of Fig. 9---the utility model principle schematic.

Figure 10---software analysis interface one.

Figure 11---software analysis interface two.

Embodiment

As shown in Figure 1:

The utility model is made of cooked rice grains hardness and viscosity automatic tester I, data line II, PC III.When off working state, equipment set constitutes a sealed whole body.

As shown in Figure 2:

The signal of the utility model outward appearance.

As shown in Figure 3, Figure 4

Cooked rice grains hardness and viscosity detector of the present utility model, its surface is made up of casing 1, power light 2, shift knob 3, base 4, tutorial light 5, nameplate 6, outlet 7, data line socket 8.

As Fig. 5, Fig. 6, shown in Figure 7:

On support 12, motor 11 drives cam 9 by axle 10 and rotates motor 11, is with stage clip 14 on the guide rod 13 by screw retention; Two gage beams refer to gage beam 15 and following gage beam 23, are screwed on casing 1 by pressing plate 19, and the two is arranged along directions X; The last movable block 18 of last gage beam 15 is fixed on the gage beam 15 by last holding screw 17, and pressure head 16 is threaded with last movable block 18 below last movable block 18; Holding screw (omitting, not label) is fixed on down on the gage beam 23 under following movable block 21 same the passing through on the following gage beam 23, and pallet 22 is connected and is in the top of movable block 21 by screw thread and movable block 21; Pressure head 16 arranges along the Y direction that with pallet 22 pressure head 16 acts on point-blank with the tested grain of rice and pallet 22; Carry out driver card 25, data collecting card 26, transformer 27 by screw retention on casing 1, data collecting card 26 gather the measurement arm strength---the displacement deformation signal transfers signals among the PC III by data line II, analyze, calculate characteristic indexs such as the hardness that draws the tested grain of rice at last, viscosity by the software analysis system with distortion to the grain of rice is stressed, and it is shown net result by the software analysis system.

Automatic pressue device of the present utility model, be the execution driver card 25 of utilizing autonomous Design, transformer 27 is with 220V voltage transitions 5V, and driving motor 11 rotates, thereby and drive cams 9 rotations by axle 10 and press down guide rod 13, and then finish loading action to cooked rice grains to be measured.Equally, after cam 9 turned over maximum gauge, guide rod 13 rollbacks were promptly finished the unloading action.The physical dimension of cam 9 then will usually be determined according to required pressure stroke of actual detected etc.

Integrate and see:

Last gage beam 15 and following gage beam 23 are positioned at below the guide rod 13 by pressing plate 19.Motor 11, go up gage beam 15, down gage beam 23, carry out driver card 25, data collecting card 27, transformer 27 all by screw retention on casing 1.Axle 10 links by D type cross section and holding screw with the output shaft of motor 11, and axle 10 links by D type cross section and holding screw equally with cam 9.Last movable block 18, following movable block 21 are fixed on the upper and

lower gage beam

15,23 by the upper and lower holding screw of M3 respectively.Pressure head 16 is fixing by screw thread and the last movable block 18 of M3, and pallet 22 is fixed with following movable block 21 by the screw thread of M5, and the distance between pressure head 16 and the pallet 22 can be passed through threaded adjusting.

Shown in Fig. 8, Fig. 9 (A, B):

The length of upper and

lower gage beam

15,23 * wide * thick being of a size of: 250mm * 30mm * 3mm.

Eight

foil gauges

28,29,30,31,32,33,34,35, according to as shown in the figure position symmetry be affixed on gage beam 15, down on gage beam 23 tow sides; Foil gauge selects for use model to be: BHF350-3AA, and size: 3mm * 3mm, sensitivity: 2.08 ± 5%, resistance: 350 ± 0.2

Ω.Foil gauge

28,29,30,31 connects into the full-bridge circuit of detecting position shifting signal;

Foil gauge

32,33,34,35 connects into the full-bridge circuit that detects force signal; Two full-bridge circuits constitute a differential bridge, and link by serial ports corresponding on two data lines and the data collecting card 26 respectively, utilize power, the displacement signal of gage beam 15 in the single-chip microcomputer collection on the data collecting card 26, following gage beam 23, and passing to PC III by another data lines II, the software analysis system can directly calculate hardness, the viscosity number of cooked rice grains.

The data collecting card 26 of the utility model special use is made up of single-chip microcomputer, three electric elements such as data serial ports, and wherein two serial ports are connected with two electric bridges that foil gauge is linked to be respectively by data line, collection power, displacement signal.The 3rd serial ports is connected with PC III by data line II, and acquired signal is flowed to the software analysis system.

Concrete testing process is as follows:

At first, the well-done rice of standard after mixing thoroughly, cooling off, is randomly drawed ten and carried out hardness, viscosity measurements; The grain of rice to be measured is placed in the circular trough 20 of pallet 22,, makes the just contact measured grain of rice of pressure head 16, open the software analysis system among the PC III, prepare to measure according to the big or small furnishing pressure head 16 of the grain of rice and the distance of pallet 22.

After adjusting, measure pilot lamp 5 and can show green, prompting can be measured; Click the " RUN " button of software analysis system, software brings into operation, and presses shift knob 3 immediately; Carrying out driver card 25 obtains driving motor 11 rotations behind the signal, motor 11 drives cam 9 by axle 10 and rotates, cam 9 presses down guide rod 13 in rotating process, guide rod presses the last movable block 18 on the gage beam 15 for 13 times, press down thereby drive pressure head 16, last gage beam 15 is squeezed and produces flexural deformation, and pressure head 16 extruding are placed on the ripe grain of rice on the pallet 22, pallet 22 is depressed gage beam 23 for 21 times by following movable block, makes down gage beam 23 same generation flexural deformations; When cam 9 turned over maximum gauge, guide rod 13 began rollback under the effect of stage clip 14, and the last movable block of going up equally on the gage beam 15 18 drives pressure head 16 rollbacks; The grain of rice sticks on pressure head 16 and the pallet 22 after being crushed, and in the process of pressure head 16 rollbacks, drives pallet 22 rollback together, and gage beam 23 is got back to initial position under driving simultaneously; When treating that cam 9 rotates back into initial position, one-time detection is promptly finished, and clicks " stopping " button in the software analysis system, promptly can show measured result in real time, the result is saved in the corresponding document folder gets final product.The rice of same kind repeats above-mentioned ten times times and detects, and the mean value of trying to achieve grain of rice hardness, viscosity can be expressed as hardness, the viscosity of this kind rice.

Detection principle of the present utility model, when 16 pairs of ripe rice to be detected of pressure head loaded, pressure head 16 can be characterized by the hardness of ripe rice for crushing the power of grain of rice effect; And during pressure head 16 unloading, ripe rice is owing to the adhesion attached to obstruction pressure head 16 rollbacks that produce on pressure head 16 and the pallet 22, and under the effect of ripe rice adhesion, following gage beam 23 is when pressure head 16 unloadings, can produce the phenomenon of resilience, promptly can be characterized by the viscosity of ripe rice.Move back hardness and two numerical value of viscosity of having measured the grain of rice by a pressure.

As Figure 10, shown in Figure 11:

The analysis of software analysis system, measuring and calculating interface, and after the one-shot measurement end, power---the displacement curve of the grain of rice of drawing.

The scope that the utility model is asked for protection is not limited only to the explanation of this embodiment.

Claims

1. cooked rice grains hardness and viscosity matter structure feature automatic tester is characterized in that being made up of automatic tester, data line, PC; In the automatic tester, be fixed on the motor coupling shaft on the support, axle connects cam, under cam guide rod is set, and is with spring on the guide rod; Gage beam, following gage beam on below guide rod, being provided with, last gage beam, following gage beam are connected on the casing, be socketed with movable block on the last gage beam, be provided with on the last movable block and tighten screw, connect pressure head below the last movable block,, trip bolt is set down on the following movable block being socketed with movable block down on the gage beam down, the following pallet that connects above the movable block, pallet is at top pressure head; At last gage beam, down on the gage beam foil gauge is set, per four are linked to be a full-bridge testing circuit, and two full-bridge circuits connect into a differential bridge, and output is connected to data collecting card, and data collecting card exports PC to.

2. cooked rice grains hardness and viscosity matter structure feature automatic tester according to claim 1 is characterized in that gage beam, descends gage beam to arrange that along directions X pressure head, pallet are arranged along the Y direction.