CN107947110A - A kind of overvoltage crowbar of frozen food color selector - Google Patents

A kind of overvoltage crowbar of frozen food color selector Download PDF

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Publication number
CN107947110A
CN107947110A CN201711204776.5A CN201711204776A CN107947110A CN 107947110 A CN107947110 A CN 107947110A CN 201711204776 A CN201711204776 A CN 201711204776A CN 107947110 A CN107947110 A CN 107947110A
Authority
CN
China
Prior art keywords
color selector
resistance
frozen food
circuit
food color
Prior art date
Application number
CN201711204776.5A
Other languages
Chinese (zh)
Inventor
毕全文
赵海
吴然
张友乐
黄晓燕
毕全云
袁绘慧
袁洋
袁光玖
Original Assignee
安徽文尧智能光电科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 安徽文尧智能光电科技有限公司 filed Critical 安徽文尧智能光电科技有限公司
Priority to CN201711204776.5A priority Critical patent/CN107947110A/en
Publication of CN107947110A publication Critical patent/CN107947110A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34Sorting according to other particular properties
    • B07C5/342Sorting according to other particular properties according to optical properties, e.g. colour
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/08Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess current
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02HEMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C2501/00Sorting according to a characteristic or feature of the articles or material to be sorted
    • B07C2501/0081Sorting of food items

Abstract

The invention discloses a kind of overvoltage crowbar of frozen food color selector, it is related to color selector technical field.The overvoltage crowbar of the frozen food color selector; including comparator IC1, IC2, overcurrent-overvoltage indicator light LED1, LED2, controllable silicon SCR 1, SCR2, adjustable resistance W1, W2, diode D1, D2 and resistance R1, R2, R3, R4, R5, R6, R7, R8, R9 and S reset button, adjustable resistance W1 and comparator the IC1 composition has comparison circuit.The overvoltage crowbar of the frozen food color selector, protection speed is fast, and the main element used in this circuit is comparator and silicon-controlled; control point is the P5 ends for directly controlling TC787, their reversal rate is all than very fast, at the same time; the circuit element is few; protect circuit short to the passing time of signal, so protection speed is fast, it is sensitive; it is and low in energy consumption; circuit is simple, and debugging is easy to maintenance, and cost is low.

Description

A kind of overvoltage crowbar of frozen food color selector
Technical field
The present invention relates to color selector technical field, is specially a kind of overvoltage crowbar of frozen food color selector.
Background technology
Color selector is according to the difference of material optical characteristics, using detecting technique by the heterochromatic particle in granule materials The equipment that automatic sorting comes out.Color selector is used for bulk material or packaging industry product, food quality detection and classification neck at present Domain.Photoelectric colour sorter is a kind of lossless screening installation for bulk material Quality Detection and classification, in grain, food, pigment The industries such as chemical industry have a wide range of applications, to the big regenerated plastics piece of sorting difficulty, plastic grain, corn, various beans, various Rice, ore, capsicum, Chinese prickly ash, garlic rice, bags of melon seeds, raisins, seed, Chinese medicine, dried shrimps, dried small shrimp, silver anchovy, glass, metal, The pernicious impurity such as homochromy bar and extraordinary material separating effect all very significantly, are reached the international leading level.
Color selector is according to the difference of material optical characteristics, using detecting technique by the heterochromatic particle in granule materials The equipment that automatic sorting comes out.Color selector mainly performs system by feeding system, Systems for optical inspection, signal processing system and separation System composition.
Now widely used overcurrent-overvoltage protecting circuit, since element is more, the probability of failure is higher, itself Reliability is poor, simultaneously as circuit is longer, the protection signal transmission time is longer, and reaction is slow, this is extremely to protecting silicon-controlled Unfavorable, the existing overvoltage circuit for frozen food color selector, protecting effect is poor, is unfavorable for promoting the use of.
The content of the invention
(One)The technical problem of solution
In view of the deficiencies of the prior art, the present invention provides a kind of overvoltage crowbar of frozen food color selector, solve existing Some is used for the overvoltage circuit of frozen food color selector, and protecting effect is poor, the problem of being unfavorable for promoting the use of.
(Two)Technical solution
In order to achieve the above object, the present invention is achieved by the following technical programs:A kind of overvoltage guarantor of frozen food color selector Protection circuit, including comparator IC1, IC2, overcurrent-overvoltage indicator light LED1, LED2, controllable silicon SCR 1, SCR2, adjustable resistance W1, W2, diode D1, D2 and resistance R1, R2, R3, R4, R5, R6, R7, R8, R9 and S reset button, the adjustable resistance W1 and Comparator IC1 compositions have comparison circuit, and the composition of controllable silicon SCR 1 has memory circuit, overcurrent-overvoltage indicator light LED1 and resistance R6 groups Into there is display circuit, diode D1 and resistance R8 compositions have logic circuit.
When the static inverter of intermediate frequency is in normal work, the current signal of input comparator in-phase end forms input electricity Pressure is less than end of oppisite phase fixed value voltage, comparator output low level, and controllable silicon SCR 1 is in cut-off state, and overcurrent indicator light LED1 is not It is bright.
When the input voltage that current signal is formed is more than the fixed value voltage of adjustable resistance W1 settings, the high electricity of comparator output Flat, controllable silicon SCR 1 turns on, and lights overcurrent indicator light LED1, and remembers fault-signal, meanwhile, pass through diode D1 and resistance R8 The P5 ends of TC787 are made to become high level.
Preferably, the overcurrent-overvoltage indicator light LED1 is serially connected on the cathode of SCR1.
Preferably, the resistance R6 is serially connected on the cathode of SCR1.
Preferably, the overcurrent-overvoltage indicator light LED2 is serially connected on the cathode of SCR2.
Preferably, the resistance R7 is serially connected on the cathode of SCR2.
(Three)Beneficial effect
The present invention provides a kind of overvoltage crowbar of frozen food color selector, possesses following beneficial effect:
(1), the frozen food color selector overvoltage crowbar, protection speed it is fast, the main element used in this circuit is to compare Device and silicon-controlled, control point are the P5 ends for directly controlling TC787, their reversal rate all than very fast, meanwhile, the circuit element Few, protection circuit is short to the passing time of signal, so protection speed is fast, sensitive and low in energy consumption, circuit is simple, debugging maintenance Convenient, cost is low, solves the existing overvoltage circuit for frozen food color selector, protecting effect is poor, is unfavorable for promoting The problem of use.
(2), the frozen food color selector overvoltage crowbar, strong antijamming capability, because in intermediate frequency static inversion electricity When source is in normal work, it is zero level that the control pole of SCR1 and SCR2 are controlled by comparator, meanwhile, overcurrent-overvoltage indicator light LED1, LED2 and resistance R6, R7 are serially connected on the cathode of SCR1 and SCR2, improve the triggering level of SCR1 and SCR2, so Antijamming capability is very strong, and avoiding should act and be failure to actuate, and the out-of-control phenomenon that should not be acted and malfunction, drastically increases guarantor The reliability of circuit is protected, solves the existing overvoltage circuit for frozen food color selector, protecting effect is poor, is unfavorable for pushing away Wide the problem of using.
Brief description of the drawings
Fig. 1 is the overvoltage crowbar figure of frozen food color selector of the present invention.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.
Referring to Fig. 1, the present invention provides a kind of technical solution:A kind of overvoltage crowbar of frozen food color selector, bag Include comparator IC1, IC2, overcurrent-overvoltage indicator light LED1, LED2, controllable silicon SCR 1, SCR2, adjustable resistance W1, W2, diode D1, D2 and resistance R1, R2, R3, R4, R5, R6, R7, R8, R9 and S reset button.
Adjustable resistance W1 and comparator IC1 compositions have comparison circuit, and the composition of controllable silicon SCR 1 has memory circuit, overcurrent-overvoltage Indicator light LED1 and resistance R6 compositions have display circuit, and diode D1 and resistance R8 compositions have logic circuit.
When the static inverter of intermediate frequency is in normal work, the current signal of input comparator in-phase end forms input electricity Pressure is less than end of oppisite phase fixed value voltage, comparator output low level, and controllable silicon SCR 1 is in cut-off state, and overcurrent indicator light LED1 is not It is bright.
When the input voltage that current signal is formed is more than the fixed value voltage of adjustable resistance W1 settings, the high electricity of comparator output Flat, controllable silicon SCR 1 turns on, and lights overcurrent indicator light LED1, and remembers fault-signal, meanwhile, pass through diode D1 and resistance R8 The P5 ends of TC787 are made to become high level.
Protect speed fast, the main element used in this circuit is comparator and silicon-controlled, and control point is to directly control TC787 P5 ends, their reversal rate all than very fast, meanwhile, the circuit element is few, protection circuit it is short to the passing time of signal, institute Sensitive to protect speed fast and low in energy consumption, circuit is simple, and debugging is easy to maintenance, and cost is low.
As a preferred technical solution of the present invention:Overcurrent-overvoltage indicator light LED1 is serially connected on the cathode of SCR1.
As a preferred technical solution of the present invention:Resistance R6 is serially connected on the cathode of SCR1.
As a preferred technical solution of the present invention:Overcurrent-overvoltage indicator light LED2 is serially connected on the cathode of SCR2.
As a preferred technical solution of the present invention:Resistance R7 is serially connected on the cathode of SCR2.
Overcurrent-overvoltage indicator light LED1, LED2 and resistance R6, R7 are serially connected on the cathode of SCR1 and SCR2, improve SCR1 With the triggering level of SCR2, so antijamming capability is very strong, avoiding should act and be failure to actuate, the mistake that should not be acted and malfunction Phenomenon is controlled, drastically increases the reliability of protection circuit.
The electric elements occurred in this article are electrically connected with extraneous main controller and 220V alternating currents, and main controller can be meter Calculation machine etc. plays the conventionally known equipment of control.
In conclusion the overvoltage crowbar of the frozen food color selector, protection speed is fast, the main member used in this circuit Part is comparator and silicon-controlled, and control point is the P5 ends for directly controlling TC787, their reversal rate all than very fast, meanwhile, should Circuit element is few, and protection circuit is short to the passing time of signal, so protection speed is fast, sensitive and low in energy consumption, circuit is simple, Debug easy to maintenance, cost is low, solves the existing overvoltage circuit for frozen food color selector, protecting effect is poor, no The problem of beneficial to promoting the use of.
Also, strong antijamming capability, because when the static inverter of intermediate frequency is in normal work, the control of SCR1 and SCR2 Pole processed be zero level by comparator control, meanwhile, overcurrent-overvoltage indicator light LED1, LED2 and resistance R6, R7 be serially connected in SCR1 with On the cathode of SCR2, the triggering level of SCR1 and SCR2 are improved, so antijamming capability is very strong, avoiding should act and motionless Make, the out-of-control phenomenon that should not be acted and malfunction, drastically increase the reliability of protection circuit, solve existing for cold The overvoltage circuit of jelly food color selector, protecting effect is poor, the problem of being unfavorable for promoting the use of.
The foregoing is only a preferred embodiment of the present invention, but protection scope of the present invention be not limited thereto, Any one skilled in the art the invention discloses technical scope in, technique according to the invention scheme and its Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.

Claims (5)

1. a kind of overvoltage crowbar of frozen food color selector, including comparator IC1, IC2, overcurrent-overvoltage indicator light LED1, LED2, controllable silicon SCR 1, SCR2, adjustable resistance W1, W2, diode D1, D2 and resistance R1, R2, R3, R4, R5, R6, R7, R8, R9 and S reset button, it is characterised in that:Adjustable resistance W1 and comparator the IC1 composition has comparison circuit, controllable silicon SCR 1 Composition has memory circuit, and overcurrent-overvoltage indicator light LED1 and resistance R6 compositions have display circuit, diode D1 and resistance R8 compositions There is logic circuit;
When the static inverter of intermediate frequency is in normal work, the current signal formation input voltage of input comparator in-phase end is small In end of oppisite phase fixed value voltage, comparator output low level, controllable silicon SCR 1 is in cut-off state, and overcurrent indicator light LED1 does not work;
When the input voltage that current signal is formed is more than the fixed value voltage of adjustable resistance W1 settings, comparator output high level, Controllable silicon SCR 1 turns on, and lights overcurrent indicator light LED1, and remembers fault-signal, meanwhile, made by diode D1 and resistance R8 The P5 ends of TC787 become high level.
A kind of 2. overvoltage crowbar of frozen food color selector according to claim 1, it is characterised in that:The overcurrent Over-pressed indicator light LED1 is serially connected on the cathode of SCR1.
A kind of 3. overvoltage crowbar of frozen food color selector according to claim 1, it is characterised in that:The resistance R6 is serially connected on the cathode of SCR1.
A kind of 4. overvoltage crowbar of frozen food color selector according to claim 1, it is characterised in that:The overcurrent Over-pressed indicator light LED2 is serially connected on the cathode of SCR2.
A kind of 5. overvoltage crowbar of frozen food color selector according to claim 1, it is characterised in that:The resistance R7 is serially connected on the cathode of SCR2.
CN201711204776.5A 2017-11-27 2017-11-27 A kind of overvoltage crowbar of frozen food color selector CN107947110A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711204776.5A CN107947110A (en) 2017-11-27 2017-11-27 A kind of overvoltage crowbar of frozen food color selector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711204776.5A CN107947110A (en) 2017-11-27 2017-11-27 A kind of overvoltage crowbar of frozen food color selector

Publications (1)

Publication Number Publication Date
CN107947110A true CN107947110A (en) 2018-04-20

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2044388U (en) * 1989-02-02 1989-09-13 张志国 Three function protective switch
CN2130011Y (en) * 1992-08-01 1993-04-14 朱立 Speed regulator for motor frequency changing
US6870332B1 (en) * 2004-01-14 2005-03-22 Te Fu Shih Multi-functional motor control device
CN101964512A (en) * 2010-11-05 2011-02-02 江苏省电力公司东台市供电公司 Electric leakage protector with overvoltage protective device
CN201846058U (en) * 2010-09-29 2011-05-25 厦门振泰成科技有限公司 Over-voltage/over-current protecting circuit
CN107113939A (en) * 2015-01-29 2017-08-29 技术消费产品股份有限公司 With light emitting diode (LED) driver for directly replacing ability

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2044388U (en) * 1989-02-02 1989-09-13 张志国 Three function protective switch
CN2130011Y (en) * 1992-08-01 1993-04-14 朱立 Speed regulator for motor frequency changing
US6870332B1 (en) * 2004-01-14 2005-03-22 Te Fu Shih Multi-functional motor control device
CN201846058U (en) * 2010-09-29 2011-05-25 厦门振泰成科技有限公司 Over-voltage/over-current protecting circuit
CN101964512A (en) * 2010-11-05 2011-02-02 江苏省电力公司东台市供电公司 Electric leakage protector with overvoltage protective device
CN107113939A (en) * 2015-01-29 2017-08-29 技术消费产品股份有限公司 With light emitting diode (LED) driver for directly replacing ability

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Application publication date: 20180420