CN2030913U

CN2030913U - Grade sorting device for fruits and eggs

Info

Publication number: CN2030913U
Application number: CN87215976U
Authority: CN
Inventors: 徐富根; 沈根荣
Original assignee: Individual
Current assignee: Individual
Priority date: 1987-12-01
Filing date: 1987-12-01
Publication date: 1989-01-18

Abstract

The utility model relates to a grade sorting device for fruits and eggs, which is an electronic device used for sorting the weight grade of fruits and eggs, comprising a sensor (3), a converting circuit (4), a grade display (5), wherein, the converting circuit (4) can be formed in two modes. The first mode is that the converting circuit (4) comprises a grade setting circuit and a grade decoding circuit; the second mode is that the converting circuit (4) comprises a pulse generator, a control circuit, a counter, and a grade drive circuit. When the fruits or the eggs are placed on the sensor, the weight grade number of the fruits or the eggs can be displayed through the grade display. When the grade sorting device for fruits and eggs is used for sorting the weight grade of fruits, eggs, or other articles, the sorting is objective, correct, and fast.

Description

Grade sorting device for fruits and eggs

The utility model is a kind of electronic instrument that is used for sorting fruit, the individual weight grade of egg product.

All the time, both at home and abroad for fruit and the sorting of egg product weight grade, can carry out sorting though all adopt eye estimating method to carry out sorting workman classification, skilled, error is bigger, and the indicator consilience of each single weight is relatively poor in the same grade.So the correctness of classification will be subjected to certain influence.

The purpose of this utility model is to provide a kind of instrument of accurately and fast sorting fruit egg product weight grade.

The inventor recognizes general fruit and egg product, under the consistent relatively situation of other quality requirements such as the kind place of production, mainly the weight indicator that carries out grade sorting, grade according to its single weight is again to determine according to the actual weight individual difference situation of various fruit egg products artificially, and suppose: the weight grading index of sweet apple is decided to be as shown in table 1 artificially:

The individual weight grading index of sweet apple: table 1

Rank	Individual weight (gram)
		One	More than 250
Two	249～200
		Three	199～150
Four	149～100
		Five	99～50
Outside the level	Below 49

The fruit egg grade sorter weight single according to the fruit egg is utilized hyundai electronics sensing and detection technique, determines its grade with the single weight of fruit egg.

It comprises the sensor 3 that fruit egg size amount is converted to electric weight, by a kind of electric weight is converted to digital signal conversion circuit 4.

Thereby drive grade display 5 and show fruit egg grade.

The embodiment of bright specifically above-mentioned design once below.

Fig. 1 is a fruit egg grade sorter electrical block diagram.

Fig. 2 is sensor bridge-type circuit, differential type amplifying circuit and grade setting circuit.

Fig. 3 is grade decoding circuit and eight strokes of displays.

Fig. 4 is the pulse counter display electrical block diagram.

Fig. 5 waits stage drive circuit.

A kind of constituted mode of change-over circuit 4 is that grade setting circuit 9 and grade decoding circuit 35 are formed by connecting and match, adopt eight strokes of displays 40 ', at this moment can adopt the force sensing resistance strain-ga(u)ge transducer, and behind its bridge circuit 8, connect secondary differential type amplifying circuit.

Among Fig. 2 32 is 0 grade and plays the setting circuit of corrective action that 33,34 are respectively the setting circuit of 2 grades, 1 grade.

J among Fig. 2, J, 2,2,1,1 link to each other with J, J, 2,2,1,1 among Fig. 3 respectively.

The circuit working principle is as follows:

Original state, before the undetermined, electric bridge 8 is balances, 6,7 two ends output voltages are output as zero through secondary differential type amplifying circuit from the e end, thus triode 19 ends, and the voltage at 20,21,22 3 places all is tending towards E ₊, make all saturation conductions of

triode

23,24,25, all be in cut-off state through the

triode

29,30,31 of voltage-

stabiliser tube

26,27,28 coupling, make J, 2,1 output voltage be tending towards E ₊, being high level, J, 2,1 is a low level.Control grade decoding circuit 35 makes 37,38,39 lines be high level, and only 36 lines are low level.Anti-phase through diode-coupled and triode, making d, h is low level.A, b, c, e, f, g are high level, by eight strokes of displays 40 demonstrate "

".

When weight reaches correcting value 200 grams,, make 19 conductings through secondary differential type amplifying circuit by

electric bridge

8,23 withdraw from the saturation region the earliest enters the amplification region, by regulating W, makes voltage-stabiliser tube 26 puncture conducting, 29 is saturated rapidly, and output J is a low level, and J is a high level, at this moment 27,28 also not conductings, 2,1 be high level, 2,1 is low level, control 35, make it only is that 37 lines are low level, demonstrate "-".In other words, with certain weight, as correcting value, proofread and correct indication with the centre-stroke work of display such as 200 grams.

With the second level in the table 1 is example, when weight at 200 grams above (comprising 200 grams), and during not to 250 grams, as long as the suitable component parameters of selection can be accomplished 26,27 conductings, and 28 not conductings, thereby demonstrate " ".When weight at 250 grams above (comprising 250 grams), demonstration " ".

Owing to the existence of actual error, be provided with potentiometer W ₃, W ₄, W ₃Being used to align correcting determination uses.W ₄Compensation levelling as the amplifier measures of dispersion.

It more than is the principle that change-over circuit is described with 2 grades, evaluate 2 above grades, principle is the same, be nothing but add with 32,33,34 form the same, and the different corresponding setting circuit of component parameters, and add supporting corresponding decoding circuit.

When reality is used, because areal generally has only one, two kind of different fruit egg product kind, so for the convenience on using, in same instrument, adopt three only component parameters differences, and circuit is formed the same grade setting circuit 9, be respectively 12,13,14 with the corresponding contact point of switch 11, simultaneously with power supply E ₊The corresponding contact point of switch 15 is respectively 16,17,18, supporting with it, and three corresponding grade decoding circuits are arranged.Come one of them circuit working of conversion and control with switch 11,15.

The another kind of change-over circuit constitutes impulse generator, control circuit, counter, be formed by connecting Deng stage drive circuit, at this moment can adopt force sensing resistance strain-ga(u)ge transducer 41, and after connect secondary differential type amplifying circuit 42, and impulse generator adopts voltage to frequency converter 43, and add frequency divider 44, make clock pulse generator 46 with quartz (controlled) oscillator, and add that NAND gate circuit 45 makes control circuit, consider that practical measurement fruit egg size amount maximum is no more than 600 grams, so adopted three 8421 yards binary-decade counters 47, wait stage drive circuit 48 to form by bistable state tentaculum setting circuit 60 and decoding circuit 61, supporting with it.Adopt eight strokes of displays 49.

Clock pulse generator 46 is received on the zero clearing reset terminal of

counter

47 and 48 simultaneously.At Fig. 5,55 is zero clearing reset terminals of 48.

Among Fig. 5 60 1,2,1,2 receive respectively 61 1,2,1,2, go up Q ₂, Q ₁₀, Q ₂₀, Q ₃₀, Q ₁₀₀, Q ₃₀₀Be the output of three 8421 yards binary-decade counters 47.In the utility model, note: Q ₁, Q ₂, Q ₃, Q ₄Be individual digit counter output; Q ₁₀, Q ₂₀, Q ₃₀, Q ₄₀Be ten digit counters output Q ₁₀₀, Q ₂₀₀, Q ₃₀₀, Q ₄₀₀, be hundred digit counters output.

The circuit working principle is as follows:

Because power supply E is being connected in the existence of circuit 50 ₊After, the collector current of 51,53 liang of pipes than 52,54 increase fast, thereby cause 51,53 guarantee adequate food and, 52,54 pipes end, whole output state is: 1,2 low levels, 1,2 high level.

Original state, before the undetermined, the electric bridge of force sensing resistance strain-ga(u)ge transducer 41 is that the voltage through 42 outputs of two extreme difference dynamic formula amplifying circuits of balance is zero, does not produce pulse, counter output is low level, the adverse effect through 56,57.Be input to the high level that is on 51,53 base stages, and this two pipe itself is saturated, thereby can not makes two flip and flop generator upsets, 1,2 still is low level.1,2 still is high level, and control 61 makes 62,63 to be high level, and only 64 lines are high level, and making a, b, c, g, e, f is high level.D, h are low level, show "

".

When counting restrains less than 200, Q ₂, Q ₂₀, Q ₃₀, Q ₃₀₀Have at least one to be low level; When counting less than 250 the time, Q ₂, Q ₁₀, Q ₁₀₀, Q ₃₀₀Have at least one to be low level.

According to table 1,2 grades of weight minimums is 200 grams, and 1 grade of weight minimum is 250 grams.

Therefore, when weight restrains less than 200, will still show "

".When weight reaches 200 grams, Q ₂, Q ₂₀, Q ₃₀, Q ₃₀₀Be high level simultaneously, make the flip and flop generator upset, output 2 becomes high level.2 is low level, and 1 still be low level, 1 for high level by decoding circuit 61, show "

".When weight surpasses 200 grams, but during not to 250 grams, at this moment counting must be through 200, thereby 2 become high level, and 2 is low level, and 1 is low level, and 1 is high level.Though might make final Q ₂, Q ₂₀, Q ₃₀, Q ₃₀₀Have one at least for low level, but since diode 58 oppositely by effect, flip and flop generator is overturn once more, thereby export 1,2,1,2 constantly, by decoding circuit 61, still show " ".

When weight reaches 250 grams, show "

" when surpassing 250 grams, because the effect that oppositely ends of diode 59 is arranged, will still show "

".

Claims

1, a kind of fruit egg grade sorter is characterized in that comprising sensor (3), change-over circuit (4) and grade display (5).

2, by the said fruit egg of claim 1 grade sorter, it is characterized in that said change-over circuit (4) is made up of grade setting circuit (9) and grade decoding circuit (35), and adopt eight strokes of displays (40).

3, by the said fruit egg of claim 1 grade sorter, it is characterized in that said change-over circuit (4) by impulse generator, control circuit, counter, etc. stage drive circuit form.

4, by the said fruit egg of claim 2 grade sorter, it is characterized in that adopting the force sensing resistance strain-ga(u)ge transducer, after connect secondary differential type amplifying circuit.

5, by claim 2 or the said fruit egg of claim 4 grade sorter, it is characterized in that having the different grade setting circuit (9) of three component parameters supporting with it, the Three Estate decoding circuit is arranged, and the switch (11) of one of them circuit working of energy conversion and control, (15) are arranged.

6, by the said fruit egg of claim 3 grade sorter, it is characterized in that adopting force sensing resistance strain-ga(u)ge transducer (41), after connect secondary differential type amplifying circuit (42), said impulse generator is by voltage to frequency converter (43), frequency divider (44) is formed, quartz (controlled) oscillator is made clock pulse generator (46), add NAND gate circuit (45) composition control circuit, after connect three 8421 yards two～decade counters (47), stage drive circuit (48) such as form by flip and flop generator setting circuit (60) and decoding circuit (61), and adopt eight strokes of displays (49).