CN2881613Y - Instrument for investigating residual of pesiticide, heavy metal and nitrate in vegetable - Google Patents
Instrument for investigating residual of pesiticide, heavy metal and nitrate in vegetable Download PDFInfo
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- CN2881613Y CN2881613Y CN 200520058150 CN200520058150U CN2881613Y CN 2881613 Y CN2881613 Y CN 2881613Y CN 200520058150 CN200520058150 CN 200520058150 CN 200520058150 U CN200520058150 U CN 200520058150U CN 2881613 Y CN2881613 Y CN 2881613Y
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Abstract
The utility model discloses a detection instrument for detecting the pesticides, heavy metals and nitrate residues in the vegetables, which comprises a liquid crystalline display circuit, a power supply circuit and so on and which is also characterized in comprising a central control unit, a temperature detection circuit and an information storage circuit. The temperature detection circuit first detects the temperature in the detection instrument and then sends the signal to the central control unit for processing. The central control unit conducts corresponding treatment according to the collected temperature values. The detection instrument includes a power supply voltage detection circuit, a charging circuit, a voice prompt circuit, a microcomputer interface circuit and a photoelectric converting circuit. The utility model can detect the pesticides, heavy metal, nitrates and other chemical matters harmful to human bodies, with the advantages of accurate detection results, fast detection speed, real-time and on-site detection, high detection efficiency and automation degree, convenient portability, practicality, low cost and good effects.
Description
Technical field
The utility model relates to checkout equipment, especially relates to a kind of be used for detecting agricultural chemicals, heavy metal, nitrate residue detection instrument in the vegetables that vegetables contain agricultural chemicals, heavy metal, nitrate etc. human body is had harmful chemical.
Background technology
At present because many businessman are possessed with a lust for gain, reduce cost in order to reach, commodity are good-looking sells well, fills in proper order she, the purpose of making money more, ignore his person safety, violate country's " vegetables safety law ", in vegetables, use harmful chemical substances such as the national agricultural chemicals of forbidding, nitrate, heavy metal, this has caused very big harm for his person, and this type of incident is seen in frequently in news report.And have most of detectors now or can only detect agricultural chemicals residual on the vegetables leaf, can only detect the one matter in these harmful chemical substances of heavy metal or nitrate, detect and can't carry out the number of chemical material, as will all detecting, then to be equipped with many detectors to these chemical substances.And existing detector detection speed is slower, and automaticity is low excessively, the needs of incompatibility fast detecting; And it too relies on extraneous power supply, and self not charged source is not easy to carry, thereby can't carry out real-time on-site and detect, and detection efficiency reduces greatly.
Summary of the invention
The purpose of this utility model is to provide agricultural chemicals, heavy metal, nitrate residue detection instrument in a kind of vegetables that can both detect harmful chemical substances such as agricultural chemicals, heavy metal, nitrate, but it has that testing result is accurate, detection speed fast, detection efficiency and automaticity height real-time on-site detect, advantage easy to carry.
The purpose of this utility model is achieved in that the utility model comprises reset circuit, liquid crystal (LCD) display circuit, power circuit and input keyboard, and feature is also to comprise central controller, temperature sensing circuit and information storage circuit.Temperature sensing circuit elder generation detecting instrument built-in temperature is delivered to signal central controller then and is handled, and central controller is handled accordingly according to the Temperature numerical of gathering again.
The utility model also comprises voltage detection circuit and charging circuit.
The utility model also comprises voice warning circuit.
The utility model also comprises microcomputer interface circuit.
The utility model also comprises electrical-optical-power conversion circuit.
The utility model has central controller, temperature sensing circuit and information storage circuit owing to designing, thereby can accurately detect harmful chemical substances such as agricultural chemicals, nitrate, heavy metals; The utility model also comprises voltage detecting circuit and charging circuit, it both can utilize extraneous power supply to charge, and also can utilize the interior power supply of car to charge at any time, and can utilize self storage battery going along with power supply, thereby the extraneous power supply of dependence within reason, be convenient to real-time on-site and detect.Can play back by the mode of voice warning circuit for information about, can show by LCDs again with voice, very directly perceived.Central controller can carry out exchanges data by microcomputer interface circuit and microcomputer.Electrical-optical-power conversion circuit effect is constant electric current by light emitting diode DL, makes its light that sends stable, and each passage uses two light emitting diodes, sends out the light of 410nm and 550nm wavelength respectively.Therefore the utlity model has can both detect harmful chemical substances such as agricultural chemicals, heavy metal, nitrate, testing result is accurate, but the fast real-time on-site of detection speed detects, detection efficiency and automaticity height, easy to carry, practical, advantage that cost is low, effective.
Description of drawings
Fig. 1 is circuit theory diagrams of the present utility model.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the utility model is described in further detail.
The utility model is made up of central controller, temperature sensing circuit, information storage circuit, electrical-optical-power conversion circuit, voice warning circuit, microcomputer interface circuit, reset circuit, voltage detection circuit, charging circuit, input keyboard, liquid crystal display circuit and power circuit, wherein:
Central controller is made up of main control integrated circuit U4, capacitor C 8, C9, resistance R 17 and crystal oscillator Y1, crystal oscillator Y1 and capacitor C 8, C9 constitute crystal oscillating circuit, vibration end 12,13 pin of the two termination main control integrated circuit U4 of crystal oscillator Y1, U4 provides oscillator signal for main control integrated circuit, and produces the timer clock signal thus.
Temperature sensing circuit is made up of temperature sensor U8 and resistance R 26, and signal output part 2 pin of temperature sensor U8 connect temperature detection end 33 pin of main control integrated circuit U4, carry out the temperature detection image data.
Information storage circuit is made up of information storage integrated circuit U2, capacitor C 15 and resistance R 13, R14, and data-signal end 5,4 pin that data-signal end 5,6 pin of information storage integrated circuit U2 meet main control integrated circuit U4 connect.
Voice warning circuit is made up of fragmented storage speech IC U9, resistance R 28, capacitor C 21, polar capacitor C20, light emitting diode D3 and loudspeaker SKP1, input end 6 pin of main control integrated circuit U4, signal output part 7,8 pin connect input end 4 pin, signal input part 5,24 pin of fragmented storage speech IC U9 respectively, and the two ends of loudspeaker SKP1 connect signal output part 13,14 pin of fragmented storage speech IC U9 respectively.
Microcomputer interface circuit is made up of interface integrated circuit U3, interface socket J2 and polar capacitor C3-C6, contact 1,2,3 pin of interface socket J2 are connected with signal end 15,14,13 pin of interface integrated circuit U3 respectively, and signal end 11,12 pin of interface integrated circuit U6 are connected with signal end 14,16 pin of main control integrated circuit U4 respectively through relay K 2.Microcomputer interface circuit is convenient to main control integrated circuit U4 and microcomputer carries out exchanges data, and is subjected to system controlled by computer.
Reset circuit is made up of resistance R 20 and polar capacitor C11, and reset terminal 9 pin of main control integrated circuit U4 connect the common port of R20 and polar capacitor C11 positive pole, another termination+5V voltage of R20, the minus earth of polar capacitor C11.
Voltage detection circuit is made up of sampling resistor R29, R30, the positive pole of the termination storage battery BAT2 of sampling resistor R29, ground connection after the other end is connected with resistance R 30, the public connecting end of sampling resistor R29, R30 connects voltage data collection terminal 39 pin of main control integrated circuit U4, carries out the voltage data collection.
Charging circuit is by field effect transistor Q4, triode Q5, diode D4, D5, D6 and resistance R 31--R35 form, signal controlling end 34 pin of one termination main control integrated circuit U4 of resistance R 34, the base stage of another termination triode Q5, the grounded emitter of triode Q5, collector and the grid that meets field effect transistor Q4 after resistance R 32 is connected, resistance R 35 is connected in parallel between the base stage and ground of triode Q5, the source electrode of field effect transistor Q4 meets diode D7, the common port of D8 negative electrode, be supply voltage VDD, the drain electrode of field effect transistor Q4 connects the anode of diode D6, the negative electrode of diode D6 and the positive pole that meets storage battery BAT2 after resistance R 32 is connected, resistance R 31 is connected in parallel between the grid and source electrode of field effect transistor Q4.
Electrical-optical-power conversion circuit is made up of integrated circuit U101-U108, UL1-UL16, U7, resistance R 1_1-R1_8, R2_1-R2_8, RL1-RL32, capacitor C 1_1-C1_8, C2_1-C2_8, C3_1-C3_8, C4_1-C4_8, C5_1-C5_8, C17, C18, photoelectricity bottle BT1-BT8, triode QL1-QL16, diode DL1-DL32.Electrical-optical-power conversion circuit effect is constant electric current by light emitting diode DL, makes its light that sends stable.Each passage uses two light emitting diodes, sends out the light of 410nm and 550nm wavelength respectively.
Input keyboard is made up of connector J1, R1-R10 and capacitor C 7, links to each other with Keyboard Control end 35 pin of main control integrated circuit U4.
Liquid crystal display circuit is made up of LCDs, connector J17, resistance R 24, R25 and capacitor C 19, and the signal output part 22-29,17,18 of main control integrated circuit U4,19 pin link to each other with LCDs through contact 12-19,6,7,9 pin of connector J17 respectively.
Power circuit is by integrated regulator U5, U6, single-pole single-throw (SPST) power switch S1, external electric supply socket J10, diode D4, D7, D8, polar capacitor C12, C13, C14, C16 forms, contact 2 pin of external electric supply socket P10 meet diode D7, the common port of D8 anode, diode D4, D7, the common port of D8 negative electrode meets integrated regulator U5 through power switch S1, the power input of U6, the negative electrode of diode D1 connects the positive pole of storage battery BAT1, anode and the power output end that meets integrated regulator U5 after resistance R 11 is connected, wherein power switch S1 be used for control be to charge to storage battery BAT2, still allow storage battery BAT2 normal power supply, (1), when the voltage of external power supply during greater than the voltage of storage battery BAT2, diode D1 ends, power by external power supply, main control integrated circuit U4 can control field effect transistor Q4 simultaneously, triode Q5 makes external power supply through external electric supply socket P10, power switch S1, diode D7,33 pairs of storage battery BAT2 chargings of resistance R; (2), when the voltage of external power supply during less than the voltage of storage battery BAT2, power by storage battery BAT2, through power switch S1, export burning voltage+5V after the one end process integrated regulator U5 voltage stabilizing, for other each circuit provides power supply, in addition-Lu exports burning voltage+5V after through integrated regulator U6 voltage stabilizing.
Before the use, set retention time and these two parameters of developing time earlier, and need make temperature calibration.
Voltage detection circuit is formed bleeder circuit by resistance R 29, R30, detects supply voltage for main control integrated circuit U4:
1. when operate as normal: supply voltage VDD input voltage is lower than 11.4V but when being higher than 8V, main control integrated circuit U4 formulates to inner storage battery power supply, shows flicker when supply voltage VDD input voltage 9V, the prompting charging, but still can work.But main control integrated circuit U4 can close all operations and show that this moment must charging when supply voltage VDD input voltage is lower than 8V.
2. when charged state following time (must have this moment external power supply to supply with), main control integrated circuit U4 can output low level make triode Q5, field effect transistor Q4 conducting, and external power supply is through supply socket P10, power switch S1, diode D6,33 pairs of storage battery BAT2 chargings of resistance R.
3. use: the temperature sensor U8 elder generation detection machine internal temperature in the temperature sensing circuit, signal is delivered to main control integrated circuit U4 and is handled after amplifying, and whether main control integrated circuit U4 controls again can begin detection.Electrical-optical-power conversion circuit detects principle:
The light that sends when light emitting diode is during by sample, the objectionable impurities that contains in the sample is many more, then the light of Xi Shouing rises many more, the light that shines on the photoelectricity bottle BT is few more, the voltage of photoelectricity bottle BT output is just weak more, by measuring the variable quantity of this voltage, just can converse content of harmful in the detected sample.
U101-108, R1_1-R1_8, R2_1-R2_8, C1_1-C1_8, C2_1-C2_8, C3_1-C3_8, C4_1-C4_8, C5_1-C5_8 form 8 amplifying circuits in the circuit, amplify the electric signal of respective channel respectively.U7 is that signal is selected integrated circuit, after the electric signal that has been exaggerated selects integrated circuit U 7 to handle through signal, sends into signal input part 40 pin of main control integrated circuit U4 through signal output part 3 pin and handles.
Claims (3)
1, agricultural chemicals, heavy metal, nitrate residue detection instrument in a kind of vegetables, comprise reset circuit, input keyboard, liquid crystal display circuit and power circuit, feature is also to comprise central controller, temperature sensing circuit and information storage circuit, wherein central controller is made up of main control integrated circuit (U4), electric capacity (C8, C9), resistance (R17) and crystal oscillator (Y1), crystal oscillator (Y1) and electric capacity (C8, C9) constitute crystal oscillating circuit, vibration end (12, the 13) pin of two termination main control integrated circuit (U4) of crystal oscillator (Y1); Temperature sensing circuit is made up of temperature sensor (U8) and resistance (R26), and signal output part (2) pin of temperature sensor (U8) connects temperature detection end (33) pin of main control integrated circuit (U4); Information storage circuit is made up of information storage integrated circuit (U2), electric capacity (C15) and resistance (R13, R14), and data-signal end (5, the 4) pin that the data-signal end of information storage integrated circuit (U2) (5,6) pin connects main control integrated circuit (U4) connects.
2, agricultural chemicals, heavy metal, nitrate residue detection instrument in the vegetables as claimed in claim 1, it is characterized in that: also comprise voltage detection circuit and charging circuit, voltage detection circuit is made up of sampling resistor (R29, R30), the positive pole of one termination storage battery (BAT2) of sampling resistor (R29), ground connection after the other end is connected with resistance (R30), the public connecting end of sampling resistor (R29, R30) connects voltage data collection terminal (39) pin of main control integrated circuit (U4); Charging circuit is by field effect transistor (Q4), triode (Q5), diode (D4, D5, D6) and resistance (R31-R35) form, signal controlling end (34) pin of one termination main control integrated circuit (U4) of resistance (R34), the base stage of another termination triode (Q5), the grounded emitter of triode (Q5), collector and the grid that meets field effect transistor (Q4) after resistance (R32) is connected, resistance (R35) is connected in parallel between the base stage and ground of triode (Q5), the source electrode of field effect transistor (Q4) meets diode (D7, D8) common port of negative electrode, the drain electrode of field effect transistor (Q4) connects the anode of diode (D6), the negative electrode of diode (D6) and the positive pole that meets storage battery (BAT2) after resistance (R32) is connected, resistance (R31) is connected in parallel between the grid and source electrode of field effect transistor (Q4).
3, agricultural chemicals in the vegetables as claimed in claim 2, heavy metal, the nitrate residue detection instrument, it is characterized in that: also comprise voice warning circuit, voice warning circuit is by fragmented storage speech IC (U9), resistance (R28), electric capacity (C21), polar capacitor (C20), light emitting diode (D3) and loudspeaker (SKP1) are formed, input end (6) pin of main control integrated circuit (U4), signal output part (7,8) pin connects input end (4) pin of fragmented storage speech IC (U9) respectively, signal input part (5,24) pin, the two ends of loudspeaker (SKP1) connect the signal output part (13 of fragmented storage speech IC (U9) respectively, 14) pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058150 CN2881613Y (en) | 2005-05-16 | 2005-05-16 | Instrument for investigating residual of pesiticide, heavy metal and nitrate in vegetable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520058150 CN2881613Y (en) | 2005-05-16 | 2005-05-16 | Instrument for investigating residual of pesiticide, heavy metal and nitrate in vegetable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2881613Y true CN2881613Y (en) | 2007-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520058150 Expired - Fee Related CN2881613Y (en) | 2005-05-16 | 2005-05-16 | Instrument for investigating residual of pesiticide, heavy metal and nitrate in vegetable |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2881613Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749240A (en) * | 2015-03-31 | 2015-07-01 | 广州禾信分析仪器有限公司 | Method for detecting heavy metals in vegetables |
| CN106770996A (en) * | 2016-12-05 | 2017-05-31 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of Multi-function experimental platform for food inspection |
| CN106814170A (en) * | 2016-12-16 | 2017-06-09 | 青岛橡胶谷知识产权有限公司 | A kind of pesticide in vegetable detection means |
-
2005
- 2005-05-16 CN CN 200520058150 patent/CN2881613Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749240A (en) * | 2015-03-31 | 2015-07-01 | 广州禾信分析仪器有限公司 | Method for detecting heavy metals in vegetables |
| CN106770996A (en) * | 2016-12-05 | 2017-05-31 | 无锡艾科瑞思产品设计与研究有限公司 | A kind of Multi-function experimental platform for food inspection |
| CN106814170A (en) * | 2016-12-16 | 2017-06-09 | 青岛橡胶谷知识产权有限公司 | A kind of pesticide in vegetable detection means |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |