A new pesticide residue rapid detection instrument

Abstract

A novel rapid pesticide residue detection instrument, belonging to the technical field of detection equipment, includes a main body, a shell, an electric linear slide, a fixed base, an electric drill, and a mounting frame. It also features a detection circuit and a control circuit. A first electric linear slide is installed at the lower end of the fixed base, and the lower end of the mounting frame is installed at the middle of the upper end of the fixed base. A second electric linear slide is fixedly installed at the rear end of the mounting frame. The electric drill is installed at the rear end of the sliding block of the second electric linear slide. A camera is installed at the upper front end of the mounting frame. The fixed base is installed inside the shell, and the detection and control circuits are installed in a component box and electrically connected. Through the combined action of the relevant mechanisms and circuits, this novel instrument automatically detects the detection card after each use by the testing personnel at the testing station. After each test, the detection lines on the detection card are destroyed, effectively preventing repeated use of the detection card and ensuring public health.

Description

Technical Field

[0001] This utility model relates to the field of detection equipment technology, and in particular to a novel rapid detection instrument for pesticide residues. Background Technology

[0002] Pesticide residues in agricultural products (such as fruits and vegetables) can endanger the health of the people. Relevant functional management departments will equip themselves with appropriate rapid pesticide residue testing instruments according to local conditions and arrange relevant personnel to conduct random inspections of fruits and vegetables sold in the market. Currently used rapid pesticide residue detection instruments for fruits and vegetables (hereinafter referred to as detectors) involve the following steps: During testing, personnel take a few grams of the fruit or vegetable to be tested, soak it in an extraction reagent, and then drop the soaking solution onto a colloidal gold detection card. The personnel insert the detection card into the detector's slot (a very small portion of the card protrudes from the slot; after testing, the staff removes the card with their fingers). After pressing the corresponding button on the detector, the camera inside the detector captures an image of the developing color of the detection card (which has a detection identification line at the center of its front; the detection process can only begin after the camera identifies the detection line; otherwise, the detection process is not performed). This image is then output to the detector's control system. The control system, based on artificial intelligence technology, analyzes the color of the detection card and compares it with images of the corresponding pesticide residue types and concentrations stored in its database (different types and concentrations of pesticide residues have different color types and shades). This yields the pesticide residue type and concentration data on the detection card (the data is displayed on a screen; subsequent testing personnel and relevant departments can select and view 50 historical data sets using the corresponding buttons on the detector).

[0003] While existing detectors combined with colloidal gold test cards meet the needs of pesticide residue detection to some extent, the following technical problems still exist due to the structural and functional limitations of the detectors. Specifically, at some testing sites (such as a farmers' market or food factory), testing personnel may use a single colloidal gold test card repeatedly to complete the testing tasks assigned by the competent authorities, in order to save time, falsify data, or save costs (for example, the competent authorities require a farmers' market to conduct 20 sample tests per day within a fixed time period; the 20 sets of data displayed on the detector screen are actually data from repeated tests using the same colloidal gold test card). The above problems make effective supervision difficult and cannot effectively protect public health. Therefore, it is particularly necessary to provide a pesticide residue detection device with a colloidal gold test card that can be self-destructed after a single use. Utility Model Content

[0004] To overcome the shortcomings of existing rapid pesticide residue detection instruments used in fruits and vegetables, which are limited by structure and function and cannot effectively prevent the repeated use of the same colloidal gold test card by testing personnel, as described in the background art, this utility model provides a new type of rapid pesticide residue detection instrument based on the main body of the instrument. In application, under the joint action of relevant mechanisms and circuits, the device can automatically complete the detection of the test card after the testing personnel place it at the testing station each time. Moreover, the detection line position of the test card can be destroyed after each test, thereby effectively preventing the testing personnel from repeatedly using the test card and thus failing to effectively protect the health of the public.

[0005] The technical solution adopted by this utility model to solve its technical problem is: A novel rapid pesticide residue detection instrument includes a main body, a shell, an electric linear slide, a fixed base, an electric drill, and a mounting frame. It also includes a detection circuit and a control circuit. The upper end of the fixed base has an open structure. At least two sets of electric linear slides are included. The first set of electric linear slides is fixedly installed inside the fixed base. Baffles are fixedly installed on both sides of the sliding block of the first set of electric linear slides, and the rear end of the sliding block has an opening groove. The front of the fixed base has an opening. The lower end of the mounting frame is fixedly installed on the upper end of the fixed base, and the rear end of the mounting frame has a drilled hole. The second set of electric linear slides... The platform is fixedly installed at the rear end of the fixed frame, the electric drill is fixedly installed at the rear end of the sliding block of the second set of electric linear slides, the camera of the pesticide residue rapid detection instrument body is fixedly installed at the upper front end of the fixed frame, the lower end of the fixed base is fixedly installed inside the outer shell, and the front end of the outer shell has an opening A; the detection circuit and control circuit are installed in the component box, the outer shell and the outside of the pesticide residue rapid detection instrument body are fixedly installed together, the power output terminal of the detection circuit and the power input terminal of the control circuit are electrically connected, and the power output terminal of the control circuit is electrically connected to the power input terminals of the two sets of electric linear slides and the electric drill respectively.

[0006] Furthermore, the width of the opening and opening A is greater than the width of the sliding block of the first set of electric linear slides, and the depth of the opening and opening A is greater than the height between the upper end of the baffle and the lower end of the sliding block.

[0007] Furthermore, the distance between the inner sides of the two baffles is greater than the width of the detection card, and after the detection card is placed between the two baffles, the opening slot is located at the lower end of the detection line of the detection card.

[0008] Furthermore, the upper end of the baffle is lower than the lower end of the fixing frame.

[0009] Furthermore, the detection circuit includes a power switch and a time relay module electrically connected to each other, and a relay. The positive power input terminal of the time relay module and the control power input terminal of the relay are connected to one end of the power switch. The positive trigger signal input terminal of the time relay module is connected to the other end of the power switch. The negative power input terminal and the negative control power input terminal of the time relay module are connected to the negative power input terminal of the relay. The power output terminal of the time relay module is connected to the positive power input terminal of the relay.

[0010] Furthermore, the control circuit includes an electrically connected diode and a time switch, with the power input terminals of four sets of time switches connected, and the positive power output terminal of the fourth set of time switches connected to the positive terminal of the diode.

[0011] Compared with existing technologies, the advantages of this invention are as follows: Based on the main body of a rapid pesticide residue detection instrument, in application, under the combined action of relevant mechanisms and circuits, each time the testing personnel place the detection card at the testing station and press the power switch, the first set of electric linear slides will transport the detection card to the lower end of the camera for image acquisition. Subsequently, the rapid pesticide residue detection instrument will determine the specific amount and type of pesticide residue in the sample. Then, the first set of electric linear slides will transport the detection card to the lower end of the drill bit of the electric drill. The second set of electric linear slides will drive the electric drill downwards to drill and destroy the detection lines of the detection card, rendering it unusable. Subsequently, the first set of electric linear slides will transport the front end of the detection card to the front end of the outer casing, completing the entire testing process. Because this invention can destroy the detection lines of the detection card after each test, it prevents the testing personnel from repeatedly using the detection card, thus preventing the impact on public health. Attached Figure Description

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0014] Figure 2 , 3 Figures 4 and 5 are partial structural diagrams of this utility model.

[0015] Figure 5 This is the circuit diagram of this utility model. Detailed Implementation

[0016] Figure 1 , 2As shown in Figures 3, 4, and 5, a novel rapid pesticide residue detection instrument includes a pesticide residue rapid detection instrument body 1, a shell 2, a power module A1, an electric linear slide M and M1, a fixed base 3, a small electric drill M2, and a fixing frame 4. The camera 101 of the pesticide residue rapid detection instrument body and the main body of the pesticide residue rapid detection instrument body are in a split structure, and it also has a detection circuit 5 and a control circuit 6. The fixed base 3 has a hollow structure and an open structure at the top. There are at least two sets of electric linear slides. The first set of electric linear slides M is longitudinally distributed and fixedly installed in the lower end of the fixed base 3. A baffle 72 (to limit the detection card) is fixedly installed on both sides of the sliding block 71 of the first set of electric linear slides. There is a recessed opening groove 711 in the middle of the rear end of the sliding block 71. The fixed base 3 has a rectangular opening with an open structure at the top in the middle of the front. 31; The lower end of the “Z”-shaped fixing frame 4 is fixedly installed on the upper outer middle part of the fixing base 3. There is a drill hole 41 with an inner diameter larger than the outer diameter of the drill bit in the middle of the rear end of the fixing frame 4. The second set of electric linear slides M1 is vertically distributed and fixedly installed on the rear end of the fixing frame 4. The small electric drill M2 is vertically distributed and fixedly installed on the rear end of the sliding block of the second set of electric linear slides M1, with its drill bit facing downward. The camera 101 is vertically distributed and fixedly installed on the upper front end of the fixing frame 4. The lower end of the fixing base 3 is fixedly installed on the lower end of the inner shell 2. There is a rectangular opening A21 in the middle of the front end of the shell 2. The internal size of the opening A21 is larger than the internal size of the opening 31 of the fixing base. The power module A1, the detection circuit 5 and the control circuit 6 are installed on the circuit board inside the component box of the pesticide residue rapid detection instrument body 1. The left side of the shell and the right outer side of the pesticide residue rapid detection instrument body 1 are fixedly installed together.

[0017] Figure 1 , 2As shown in Figures 3, 4, and 5, the widths of openings 31 and A21 are slightly larger than the width of the sliding block, and the depths of openings 31 and A21 are slightly larger than the height between the upper end of baffle 72 and the lower end of sliding block 71. The longitudinal length of sliding block 71 and the two baffles 72 is the same as the length of detection card 8. The distance between the inner sides of the two baffles 72 is slightly larger than the width of detection card 8. After placing detection card 8 between the two baffles 72, the opening slot 711 is located at the lower end of the detection line of detection card 8, and the drill hole 41 is located at the upper end of the detection line. The upper end of baffle 72 is lower than the lower end of the fixing frame 4. When the sliding block 71 of the first set of electric linear slide table M is at the front stop, the front ends of sliding block 71 and baffles are located about 5 mm outside the rectangular opening A21 at the front end of the outer shell through the opening 31 in the middle of the front of the fixing seat. The detection circuit includes a power switch S1 and time relay modules A2 and J1, which are electrically connected. The positive power input pin 1 of time relay module A2 is connected to the control power input pin of relay J1 and one end of power switch S1. The positive trigger signal input pin 3 of time relay module A2 is connected to the other end of power switch S1. The negative power input pin 2 and negative control power input pin 4 of time relay module A2 are connected to the negative power input pin of relay J1. The power output pin 9 of time relay module A2 is connected to the positive power input pin of relay J1. The power switch S1 button is located on the front outer side of the component box. The control circuit includes a diode VD and time switches A3, A4, A5, and A6, which are connected by wires. The power input pins 1 and 2 of the four time switches A3, A4, A5, and A6 are connected. The positive power output pin 3 of the fourth time switch A6 is connected to the positive terminal of diode VD.

[0018] Figure 1 , 2 As shown in Figures 3, 4, and 5, the power input terminals 1 and 2 of power module A1 are connected to the two poles of the 220V AC power supply via wires. The power output terminals 3 and 4 of power module A1 are connected to the power input terminals of the detection circuit, the control power input terminal of relay J1, and the negative power input terminal of relay J1 via wires. The normally open contact terminal and negative power input terminal of the power output terminal of the detection circuit, and the power input terminals of time switches A3, A4, A5, and A6 are connected to the pins 1 and 2 via wires. The power output terminals 3 and 4 of time switches A3 and A4 are connected to the positive and negative and negative-positive power input terminals of the first set of electric linear slide M via wires. The negative terminal of diode VD, the negative terminal of time switch A6, the power output terminals 3 and 4 of time switch A5, and the positive and negative and negative-positive power input terminals of the second set of electric linear slide M1 are connected via wires. The pins 3 and 4 of time switch A6 are connected to the power input terminal of electric drill M2 via wires.

[0019] Figure 1 , 2As shown in Figures 3, 4, and 5, this novel device is based on the main body 1 of a rapid pesticide residue detection instrument. During testing, the operator takes a few grams of fruit or vegetable sample, soaks it in an extraction reagent, and then drips the soaking solution onto a colloidal gold detection card 8. The operator then inserts the card into the detector's port and presses the corresponding button on the main body 1. The camera 101 inside the detector 1 captures an image of the developing color of the card (which has a detection identification line at the center of its detection surface; the detection process can only begin after the camera identifies the detection line; otherwise, the detection process is not performed). The image is then output to the control system of the detector. The control system, based on artificial intelligence technology, analyzes the color of the card and compares it with images of the corresponding pesticide residue types and concentrations stored in its database (different types and concentrations of pesticide residues have different color types and shades). This yields the pesticide residue type and concentration data on the card (the data is displayed on a screen, and subsequent testing personnel and relevant authorities can select and view 50 historical data sets via the corresponding buttons on the detector). The above is existing technology; this application does not provide any protection for the above technical solutions, nor does it elaborate on the technical solutions. In this new invention, after the AC 220V power supply enters the power input terminals 1 and 2 of the power module A1, the power module A1 outputs a stable DC 12V power supply through pins 3 and 4, which then enters the power input terminals of the detection circuit. During testing, the testing personnel hold the test card 8 and insert it into the housing 2 through openings A21 and 31. The test card 8 is positioned on the movable block 71 of the first set of electric linear slide M between the two baffles 72 (the back end of the test card is about 5 mm outside the front end of the housing). Then, the testing personnel press the button of the power switch S1 (normally open contact self-reset button type power switch) with their finger (and turn on the corresponding button on the test body 1). As a result, the positive terminal of the 12V power supply triggers pin 3 of the time relay module A2. Under the action of its internal circuit, the time relay module A2 outputs 30 seconds of power, which enters the power input terminals of the four time control switches A3, A4, A5, and A6. The time control switch A3 outputs power for 4 seconds to the positive and negative power input terminals of the electric linear slide M. The sliding block of the electric linear slide M drives the detection line and detection point of the detection card 8 to be located under the camera 101. The camera 101 captures the image of the developing color of the detection card and then outputs it to the control system of the detector body. The control system, based on artificial intelligence technology, analyzes the color of the detection card and compares it with the corresponding color-corresponding pesticide residue type and concentration images stored in its own database, thereby obtaining the pesticide residue type and concentration data on the detection card (the data is displayed on the screen, and subsequent testing personnel and competent authorities can select and view 50 sets of historical data through the corresponding buttons on the detector).After the time control switch A3 outputs power for 4 seconds at pins 3 and 4 with a 5-second interval (during which the camera captures images), the time control switch A3 outputs power for 3 seconds at pins 3 and 4 to the positive and negative power input terminals of the electric linear slide M. The sliding block of the electric linear slide M drives the detection line and detection point of the detection card 8 to be located at the lower end of the drill bit of the electric drill M2. After the timer switch A6 is powered on, its pins 3 and 4 will output power for 5 seconds every 12 seconds. This power is then unidirectionally conducted through diode VD to the positive and negative power input terminals of the electric linear slide M1. (At the same time, the power output from pins 3 and 4 of the timer switch A6 enters the power input terminal of the electric drill M2, and the electric drill M2 is powered on.) The sliding block of the electric linear slide M1 drives the electric drill M2 to move vertically from top to bottom. The rotating drill bit of the electric drill M2 will drill through the drill hole 41 and break the detection line and detection point of the detection card 8 (drilling a hole). After the detection line of the detection card is broken, the lower end of the drill bit is just inside the opening slot 711 and the upper end stops moving (the electric drill M2 and the electric linear slide M1 are de-energized and do not work). After time switch A5 is powered on, its pins 3 and 4 will output power for 5 seconds at 17-second intervals to the negative and positive power input terminals of the electric linear slide M2. The sliding block of the electric linear slide M2 ​​drives the electric drill M2 to move vertically from bottom to top until it stops, preparing for the next inspection of the damaged detection card. After time switch A4 is powered on, its pins 3 and 4 will output power for 7 seconds at 22-second intervals to the negative and positive power input terminals of the electric linear slide M. The sliding block of the electric linear slide M drives the detection card 8 forward a certain distance and then stops. At this moment, a very small part of the detection card (about 5 mm) is exposed outside the front end of the opening A21. After the inspection, the staff can use their fingers to remove and inspect the detection card.

[0020] Figure 1 , 2As shown in Figures 3, 4, and 5, based on the above, this new type of rapid pesticide residue detection instrument has the following mechanism: Each time the testing personnel place the test card at the testing station and press the power switch, the first set of electric linear slides transports the test card to the lower end of the camera for image acquisition. Subsequently, the rapid pesticide residue detection instrument determines the specific amount and type of pesticide residue in the sample. Then, the first set of electric linear slides transports the test card to the lower end of the drill bit of the electric drill. The second set of electric linear slides drives the electric drill downwards to drill holes in the detection lines of the test card, rendering it unusable. Then, the first set of electric linear slides transports the front end of the test card to the front end of the outer casing, completing the entire testing process. Because this new type of instrument can destroy the detection lines of the test card after each test, it prevents the testing personnel from repeatedly using the test card, thus avoiding the impact on public health. Power module A1 is a finished product of AC 220V to DC 12V power module; relay J1 is DC12V; diode VD is 1N4001; time switches A3, A4, A5, and A6 are model KG316T, which have two power input terminals, two power output terminals, and seven setting buttons. These seven buttons allow setting the output time of the two power output terminals; time relay module A2 is a finished product of model YYC-2S time controller module, which has two power input terminals (pins 1 and 2) and two trigger signal input terminals (pins 3 and 4). The system includes a 5-pin setting button, a 6-pin emergency stop button, a 7-pin time increment button, a 8-pin time decrement button, and a 9-pin normally open power output terminal. After pressing the setting button, the operator can press the time increment and decrement buttons to set the desired time period. The normally open power output terminal outputs positive power. Once the time is set, the time relay module starts timing after each trigger signal is input to the two trigger signal input terminals. The drill M2 is a 20W small electric drill; the electric linear slides M and M1 are 40W small electric lead screw slides.

[0021] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model.

[0022] Furthermore, it should be understood that although this specification describes the embodiments, the embodiments do not necessarily contain only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel pesticide residue rapid detection instrument, comprising a pesticide residue rapid detection instrument body, a shell, an electric linear slide, a fixing seat, an electric drill and a fixing frame, characterized in that, It also has a detection circuit and a control circuit; the upper end of the fixed base has an open structure, and there are at least two sets of electric linear slides. The first set of electric linear slides is fixedly installed in the fixed base. Baffles are fixedly installed on both sides of the sliding block of the first set of electric linear slides, and the rear end of the sliding block has an opening groove; the front of the fixed base has an opening; the lower end of the fixed frame is fixedly installed on the upper end of the fixed base, and the rear end of the fixed frame has a drill hole. The second set of electric linear slides is fixedly installed on the rear end of the fixed frame, and the electric drill is fixedly installed on the rear end of the sliding block of the second set of electric linear slides. The camera of the pesticide residue rapid detection instrument body is fixedly installed on the upper front end of the fixed frame, and the lower end of the fixed base is fixedly installed in the outer shell. The front end of the outer shell has an opening A; the detection circuit and the control circuit are installed in the component box. The outer shell and the outside of the pesticide residue rapid detection instrument body are fixedly installed together. The power output terminal of the detection circuit and the power input terminal of the control circuit are electrically connected. The power output terminal of the control circuit and the power input terminals of the two sets of electric linear slides and the electric drill are electrically connected respectively.

2. The novel pesticide residue rapid detection instrument according to claim 1, characterized in that, The width of the opening, opening A, is greater than the width of the sliding block of the first set of electric linear slides, and the depth of the opening, opening A, is greater than the height between the upper end of the baffle and the lower end of the sliding block.

3. The novel pesticide residue rapid detection instrument according to claim 1, characterized in that, The distance between the inner sides of the two baffles is greater than the width of the test card. After the test card is placed between the two baffles, the opening slot is located at the lower end of the test line of the test card.

4. The novel pesticide residue rapid detection instrument according to claim 1, characterized in that, The upper part of the baffle is lower than the lower part of the fixed frame.

5. The novel pesticide residue rapid detection instrument according to claim 1, characterized in that, The detection circuit includes a power switch and a time relay module, which are electrically connected. The positive power input terminal of the time relay module is connected to the control power input terminal of the relay and one end of the power switch. The positive trigger signal input terminal of the time relay module is connected to the other end of the power switch. The negative power input terminal and the negative control power input terminal of the time relay module are connected to the negative power input terminal of the relay. The power output terminal of the time relay module is connected to the positive power input terminal of the relay.

6. The novel pesticide residue rapid detection instrument according to claim 1, characterized in that, The control circuit includes electrically connected diodes and time switches. The power input terminals of four sets of time switches are connected, and the positive power output terminal of the fourth set of time switches is connected to the positive terminal of the diode.

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