A wireless calibration device for a rapid microbial detector

Abstract

The utility model relates to the technical field of equipment calibration, and in particular to a wireless calibration device for a microbial rapid detector. By setting an electronic unit connected to a computer, the calibration of temperature parameters and optical parameters can be intelligently controlled and performed simultaneously, and the calibration efficiency is high. The outer shell contour of the wireless calibration device is matched and fitted with a hole cavity, and heat is directly transferred by conduction to truly reflect the temperature field conditions. A battery circuit board provided with a wireless communication module is electrically connected to a main circuit board for power supply, and a prompt can be given when the power is insufficient. A plurality of first through holes are provided in the main shell to surround the temperature sensor at a close distance, so that the temperature sensor can fully obtain heat, thereby ensuring the accuracy and reliability of the temperature parameter calibration. The second through hole is coincident with the horizontal central axis of the light intensity sensor, and the light intensity sensor faces the second through hole to receive the light emitted by the detection system of the microbial rapid detector, so as to calibrate the light uniformity and light intensity stability of the optical detection system of the microbial rapid detector.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment calibration, in particular to a wireless calibration device for a rapid microbial detector. Background Art

[0002] The microbial rapid detector combines traditional microbial culture theory and staining technology, and adopts photoelectric detection technology and a computer-controlled modular analysis system. The reagent bottle is filled with specific culture medium and special indicator, and the photoelectric method is used to achieve rapid expansion of microorganisms. The redox dye in the reagent bottle is used as the initial medium to measure the redox state. When microorganisms are present, the redox state of the detection reagent bottle will be changed, causing the redox dye to change color. The photoelectric detection instrument is used to monitor the color change of the colloidal plug at the bottom of the reagent bottle. The system monitors at regular intervals and collects data through software for analysis and statistics. The detection process involves the calibration of light parameters and temperature parameters to obtain the detection results. It is widely used in microbial detection in food, dairy products, beverages, medical supplies and cosmetics, and can quickly and accurately detect a variety of microorganisms, including coliform bacteria, molds and yeasts.

[0003] However, the standard instrument currently used to calibrate illumination uniformity and repeatability is mainly an illuminance meter, while the light-emitting part of the microbial rapid detector is at the bottom of the culture well, and the illuminance meter cannot be placed in the microbial rapid detector for detection. The traditional wired temperature standard is not suitable for the calibration of temperature parameters of the microbial rapid detector. The shape, volume and temperature-sensing part design of the wireless temperature recorder on the market are not suitable for the inspection of the microbial rapid detector. Quality control products are now used for regular calibration. Generally, the quality control products purchased from the manufacturer do not have traceability and cannot evaluate which specific parameters of the equipment have problems. Therefore, there is an urgent need for a wireless calibration device that can calibrate both temperature parameters and optical parameters when the microbial rapid detector is actually in use. Utility Model Content

[0004] The utility model discloses a wireless calibration device for a rapid microbial detector, aiming to solve the technical problems existing in the prior art.

[0005] The utility model adopts the following technical solutions:

[0006] A wireless calibration device for a microbial rapid detector is connected to a computer and comprises an outer shell and an electronic unit installed in the outer shell;

[0007] The outer shell comprises an upper cover and a main shell which are detachably connected as one body, and the outer contour of the outer shell matches and fits with the hole cavity of the reagent bottle of the microbial rapid detection instrument;

[0008] The electronic unit includes an upper cover electronic unit located in the upper cover cavity and a main shell electronic unit located in the main shell cavity, which are electrically connected, and the upper cover electronic unit includes a device power supply battery; the main shell electronic unit includes a main circuit board vertically placed in the main shell cavity and a temperature sensor and a light intensity sensor fixed on the main circuit board;

[0009] A plurality of first through holes are provided on the shell wall surrounding the middle part of the main shell, and a second through hole is provided on the bottom side of the main shell; the plurality of first through holes are arranged closely surrounding the temperature sensor, the second through hole coincides with the horizontal center axis of the light sensor, and the light sensor faces the second through hole to obtain the preset required light.

[0010] In some embodiments, the upper cover is connected to the main shell by threads, and the main shell includes an upper connecting portion located at the upper end and a calibration shell portion located at the lower end, and the cavity provided on the upper cover is connected to the cavity provided on the main shell, wherein the cavity with an opening facing downward provided on the upper cover is set as an upper cavity, and the cavity with an opening facing upward provided on the main shell includes a groove provided on the upper connecting portion and a lower cavity provided on the calibration shell portion.

[0011] In some embodiments, the main shell body is made of black polyformaldehyde, and the upper end connection portion includes an external threaded connection end and an outer ring body at the bottom of the thread. The calibration shell body is configured as a cone, and a plurality of first through holes evenly distributed horizontally are provided in the middle of the cone. The lower end of the cone is a small end of the cone, and two parallel vertical walls are provided at the bottom of the small end. The vertical walls are symmetrically arranged with respect to the center plane, and a connected inclined wall is provided between the vertical wall and the wall of the cone, and a second through hole is provided on one side of the vertical wall.

[0012] In some embodiments, the upper cover electronic unit is further provided with a battery circuit board connected to the battery, which is horizontally arranged below the battery and connected to the main circuit board through a wire;

[0013] The vertical center plane of the main circuit board coincides with the center plane of the main shell cavity, and the upper end of the main circuit board is connected to the battery circuit board, and the lower end touches the bottom wall of the small end.

[0014] In some embodiments, the temperature sensor and the light intensity sensor are both soldered on the main circuit board, located on one side of the main circuit board, or located on both sides of the main circuit board.

[0015] In some embodiments, the center of the temperature sensor and the centers of the first through holes are located in the same horizontal plane, and the temperature sensor is closest to one of the first through holes, and their center lines coincide with each other; the number M of the first through holes should satisfy: M>4.

[0016] In some embodiments, a diameter of the second through hole is larger than an outer diameter of the light sensor.

[0017] In some embodiments, the battery is configured as a button battery, the button battery is fixedly mounted in a shrapnel battery compartment, the shrapnel battery compartment is fixedly mounted on the battery circuit board, and the battery circuit board is also provided with a wireless communication module for wireless communication connection.

[0018] In some embodiments, the outer periphery of the upper cover made of black polyoxymethylene is provided with evenly distributed anti-slip strips.

[0019] In some embodiments, the main circuit board also includes a single-chip microcomputer controller for controlling temperature acquisition and light acquisition, a memory for storing data information, a wireless communication module, and a Hall module for wirelessly connecting the wireless calibration device to the computer through a dedicated interface. Beneficial Effects

[0020] The utility model discloses a wireless calibration device for a microbial rapid detector. Compared with the prior art, the utility model has the following advantages:

[0021] A wireless calibration device for a microorganism rapid detector is provided. An electronic unit connected to a computer is provided, wherein a single-chip microcomputer controller, a wireless communication module, a Hall module, a temperature sensor and a light intensity sensor are provided in the electronic unit. Under the control of the computer, the temperature parameters and optical parameters can be calibrated simultaneously, and the calibration efficiency is high. The outer contour of the outer shell of the wireless calibration device matches and fits with the hole cavity, and direct heat conduction transfer is achieved, so that the temperature field condition can be truly reflected. The battery circuit board is electrically connected to the main circuit board for power supply, and the battery circuit board connected to the battery is provided with a wireless communication module, so that timely reminders can be given when the power is insufficient. No less than 4 first through holes are provided in the main shell to surround the temperature sensor at a close distance, so that the temperature sensor can fully obtain heat, thereby ensuring the accuracy and reliability of the temperature parameter calibration. The second through hole is coincident with the horizontal central axis of the light intensity sensor, and the light intensity sensor faces the second through hole to receive the light emitted by the detection system of the microorganism rapid detector, so as to calibrate the light uniformity and light intensity stability of the optical detection system of the microorganism rapid detector, thereby filling the gap in the calibration equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solution of the embodiment of the utility model, the following is a brief introduction to the drawings required for the description of the embodiment, which constitute a part of the utility model. The schematic embodiments of the utility model and their descriptions explain the utility model and do not constitute an improper limitation on the utility model; in the drawings:

[0023] Figure 1It is a schematic diagram of the technical solution structure in which the temperature sensor and the light intensity sensor of the wireless calibration device of the microorganism rapid detector disclosed in the embodiment of the utility model are located on the same side;

[0024] Figure 2 This is a schematic diagram of the technical solution structure in which the temperature sensor and the light intensity sensor disclosed in the embodiment of the utility model are located on both sides;

[0025] Figure 3 This is an appearance diagram of a wireless calibration device for a rapid microbial detector disclosed in an embodiment of the utility model;

[0026] Figure 4 A schematic diagram of the technical solution structure of placing the wireless calibration device on an interface and connecting it to a computer;

[0027] Figure 5 A schematic diagram of the technical solution structure of the main circuit board;

[0028] Figure 6 The schematic diagram of the technical solution structure is that several wireless calibration devices are placed in the hole cavity to calibrate temperature parameters and optical parameters at the same time.

[0029] In the figure:

[0030] Outer shell 1; upper cover 11; upper cavity 111; upper cover internal thread 112; anti-slip strip 113; main shell 12; upper end connection part 121; external thread connection end 1211; groove 1212; outer ring body 1213; upper mounting frame 1214; calibration shell part 122; tapered wall 1221; lower cavity 1222; first through hole 1223; inclined wall 1224; vertical wall 1225; second through hole 1226; electronic unit 2; upper cover electronic unit 21; shrapnel battery compartment 211; button battery 212; Battery circuit board 213; wireless communication module 2131; main housing electronic unit 22; main circuit board 221; single chip controller 2211; memory 2212; ADC circuit 2213; wireless communication module 2214; Hall module 2215; I2C interface 2216; internal oscillator 2217; operational amplifier 2218; temperature sensitive diode 2219; temperature sensor 222; light intensity sensor 223; lower mounting frame 224; wire 23; computer 3; hole cavity 4; magnetic interface 5. DETAILED DESCRIPTION

[0031] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in combination with the specific embodiments of the utility model and the corresponding drawings; in the description of the utility model, it should be noted that the "including" mentioned in the specification and the claims is an open term, so it should be interpreted as "including but not limited to"; "several" refers to more than 4.

[0032] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0033] Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0034] like Figure 1-Figure 6 As shown, the technical solution disclosed by the utility model is:

[0035] A wireless calibration device for a rapid microbial detector, connected to a computer 3, comprises an outer shell 1, and an electronic unit 2 installed in the outer shell 1;

[0036] The outer shell 1 comprises an upper cover 11 and a main shell 12 which are detachably connected as one body, and the outer contour of the outer shell 1 matches and fits with the hole cavity 4 of the reagent bottle of the microbial rapid detection instrument.

[0037] The electronic unit 2 includes an upper cover electronic unit 21 located in an upper cavity 111 provided in the upper cover 11 and a main shell electronic unit 22 located in the cavity of the main shell 12, which are electrically connected. The upper cover electronic unit 21 includes a button battery 212 for powering the device; the main shell electronic unit 22 includes a main circuit board 221 vertically placed in a cavity formed by a groove 1212 and a lower cavity 1222 in the main shell 12, and a temperature sensor 222 and a light intensity sensor 223 fixedly mounted on the main circuit board 221.

[0038] A plurality of first through holes 1223 are provided on the shell wall surrounding the middle part of the main shell 12, and a second through hole 1226 is provided on the bottom side of the main shell 12; the plurality of first through holes 1223 are arranged closely around the temperature sensor 222, the second through hole 1226 coincides with the horizontal center axis of the light sensor 223, and the light sensor 223 faces the second through hole 1226 to obtain the preset required light.

[0039] like Figure 1 to Figure 6 As shown, the preferred embodiment provided by the utility model is:

[0040] A wireless calibration device for a rapid microbial detector comprises an outer shell 1 and an electronic unit 2 installed in the outer shell 1. The electronic unit 2 is connected to a computer 3 by wireless communication.

[0041] The outer shell 1 includes an upper cover 11 and a main shell 12 which are detachably connected together by threads. The outer contour of the outer shell 1 is consistent with the shape and size of the reagent bottle, that is, it matches and fits with the hole cavity 4 of the reagent bottle of the microbial rapid detection instrument, directly transfers heat, will not be affected by the ambient temperature in the box, and truly reflects the temperature field conditions.

[0042] A plurality of first through holes 1223 are provided on the shell wall surrounding the middle part of the main shell 12, and a second through hole 1226 is provided on the bottom side; the number M of the first through holes 1223 should satisfy: M>4. In this example, 6 first through holes 1223 are provided, and are evenly distributed on the shell wall, and the center lines of the first through holes 1223 are all located on the same horizontal plane.

[0043] The main shell 12 includes an upper connecting portion 121 located at the upper end and a calibration shell portion 122 located at the lower end. The cavity provided on the upper cover 11 is connected to the cavity provided on the main shell 12. An upper cavity 111 with an opening facing downward is provided in the wall of the upper cover 11. The main shell 12 includes a cavity with an opening facing upward, including a groove 1212 provided on the upper connecting portion 121 and a lower cavity 1222 provided on the calibration shell portion 122.

[0044] The main shell 12 is made of black polyformaldehyde, wherein the upper end connection part 121 includes an external threaded connection end 1211 and an outer ring body 1213 at the bottom of the thread, the calibration shell part 122 is set as a cone, and the middle part of the cone is provided with a plurality of first through holes 1223 evenly distributed horizontally, and in this example, 6 first through holes 1223 are set, the lower end of the cone is the small end of the cone, and the bottom of the small end is provided with two parallel vertical walls 1225, the vertical walls 1225 are symmetrically arranged with respect to the center plane, and a connected inclined wall 1224 is provided between the vertical wall 1225 and the conical wall 1221 of the cone, and a second through hole 1226 is provided on one side of the vertical wall 1225.

[0045] The upper cover 11 is made of black polyoxymethylene, and has anti-slip strips 113 evenly distributed around its outer periphery.

[0046] The electronic unit 2 includes an upper cover electronic unit 21 and a main housing electronic unit 22 connected by a wire 23 .

[0047] The upper cover electronic unit 21 is located in the upper cavity 111 provided on the upper cover 11, and the upper cover electronic unit 21 includes a shrapnel battery compartment 211 fixedly installed in the upper cavity 111, a button battery 212 horizontally installed in the shrapnel battery compartment 211, and a battery circuit board 213 horizontally installed under the shrapnel battery compartment 211, a wireless communication module 2131 is provided on the battery circuit board 213, and the wireless communication module 2131 is configured as a Bluetooth communication chip, and the battery circuit board 213 is encapsulated in the upper cover 11, and the button battery 212 supplies power to the entire device. The use of the button battery 212 reduces the size of the entire device and meets the placement requirements of use; when the power is low, the wireless communication module 2131 sends information to the computer 3, and the computer 3 software promptly reminds, and the staff can unscrew the upper cover 11 according to the prompt to replace the battery, which is timely and convenient.

[0048] The main shell electronic unit 22 is located in a cavity provided in the main shell 12, and the cavity is composed of a groove 1212 provided in the upper end connecting part 121 and a lower cavity 1222 provided in the calibration shell part 122. The main shell electronic unit 22 includes a vertically placed main circuit board 221 and a temperature sensor 222 and a light intensity sensor 223 fixed on the main circuit board 221. By setting the temperature sensor 222 and the light intensity sensor 223, the calibration of temperature parameters and optical parameters can be achieved simultaneously, and the calibration efficiency is high.

[0049] The vertical center plane of the main circuit board 221 coincides with the center plane of the cavity of the main shell 12, and the upper end of the main circuit board 221 is connected to the battery circuit board 213 through a wire 23, and the lower end touches the bottom wall of the small end. The upper end of the main circuit board 221 is fixed by an upper mounting frame 1214, and the lower end is fixed by a lower mounting frame 224. The upper mounting frame 1214 and the lower mounting frame 224 are both fixedly mounted on the inner wall of the main shell 12.

[0050] In this embodiment, the temperature sensor 222 and the light intensity sensor 223 are both soldered on the main circuit board 221 and are located on the same side of the main circuit board 221. Figure 1 shown.

[0051] In some embodiments, the temperature sensor 222 and the light intensity sensor 223 are respectively located on two sides of the main circuit board 221. Figure 2 shown.

[0052] The temperature sensor 222 can be a thermistor, a platinum resistance, etc., preferably a platinum resistance temperature sensor. The center of the temperature sensor 222 and the centers of the six first through holes 1223 are located in the same horizontal plane, and the six first through holes 1223 are arranged around the temperature sensor 222 at a close distance, so that the temperature sensor 222 can fully obtain heat. The temperature sensing position of the temperature sensor 222 is located at one of the first through holes 1223 that is closest, which can better and faster collect the hole cavity temperature, ensuring the accuracy and reliability of temperature parameter calibration.

[0053] In this embodiment, the second through hole 1226 coincides with the horizontal center axis of the light intensity sensor 223, and the diameter of the second through hole 1226 is larger than the outer diameter of the light intensity sensor 223. The light intensity sensor 223 faces the second through hole 1226 and receives the light emitted by the detection system of the rapid microbial detector through the second through hole 1226 to calibrate the light uniformity and light intensity stability of the optical detection system of the rapid microbial detector.

[0054] The light intensity sensor 223 is preferably a digital type, so as to collect the light intensity of each culture hole position of the microorganism rapid detector.

[0055] The main circuit board 221 is provided with a single-chip microcomputer controller 2211 for controlling temperature collection and light collection, a memory 2212 for storing data information, a wireless communication module 2214 for wirelessly transmitting data information, an I2C interface 2216 for realizing communication between multiple devices or equipment, a Hall module 2215 for wirelessly connecting the wireless calibration device to the computer 3, an internal oscillator 2217 for converting DC power into AC power with a certain frequency, an ADC circuit 2213, an operational amplifier 2218 and a temperature-sensitive diode 2219; the single-chip microcomputer controller 2211 controls the memory 2212, the wireless communication module 2214, the I2C interface 2216, the Hall module 2215, the internal oscillator 2217, the ADC circuit 2213, the operational amplifier 2218 and the temperature-sensitive diode 2219 to execute the instructions of the computer 3 to work, that is, by setting the electronic unit 2 connected to the computer 3, under the control of the computer 3, the temperature parameters and the optical parameters can be calibrated at the same time, and the calibration efficiency is high, such as Figure 5 shown.

[0056] The temperature measurement range of the wireless calibration device is set to (-40~85)℃, and the resolution achieved through the hardware circuit is not less than 0.01℃. After correction, the maximum allowable error is ≤±0.1℃; the illuminance detection range is set to: (0~10000)lx; the resolution is 0.01lx; the measurement accuracy is ±5%.

[0057] The wireless calibration device adopts Bluetooth communication technology. The device can be placed upside down on the magnetic interface 5, and the wireless communication module 2214 is activated through the Hall module 2215 to establish a connection between the wireless calibration device and the computer 3 software end. The software end can set the sampling frequency, working time, whether to transmit data in real time, etc., and receive and display the collected temperature data and light intensity data, analyze them, and generate the calibration results of the microbial rapid detector, such as Figure 4 shown.

[0058] It should be noted that: when multiple wireless calibration devices are placed in the wells 4 of different reagents of the microbial rapid detector, the light intensity sensor 223 of each calibration device is at the same height and the same spatial position, and the distance between the light intensity sensor 223 in each well cavity 4 and the light emitting position is consistent, so that the uniformity of the microbial rapid detector can be evaluated, and the temperature parameters and optical parameters of multiple wells can also be calibrated at the same time, such as Figure 6 shown.

[0059] The embodiments of the utility model are described above in conjunction with the accompanying drawings, but the utility model is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the utility model, ordinary technicians in this field can also make many forms without departing from the scope of protection of the utility model and the claims, all of which are within the protection of the utility model.

Claims

1. A wireless calibration device for a microbial rapid detector, connected to a computer, characterized in that: It comprises an outer shell and an electronic unit installed in the outer shell; The outer shell comprises an upper cover and a main shell which are detachably connected as one body, and the outer contour of the outer shell matches and fits with the hole cavity of the reagent bottle of the microbial rapid detection instrument; The electronic unit includes an upper cover electronic unit located in the upper cover cavity and a main shell electronic unit located in the main shell cavity, which are electrically connected, and the upper cover electronic unit includes a device power supply battery; the main shell electronic unit includes a main circuit board vertically placed in the main shell cavity and a temperature sensor and a light intensity sensor fixed on the main circuit board; A plurality of first through holes are provided on the shell wall surrounding the middle part of the main shell, and a second through hole is provided on the bottom side of the main shell; the plurality of first through holes are arranged closely surrounding the temperature sensor, the second through hole coincides with the horizontal center axis of the light sensor, and the light sensor faces the second through hole to obtain the preset required light.

2. The wireless calibration device for a rapid microbial detector according to claim 1, characterized in that: The upper cover is connected to the main shell by threads, and the main shell includes an upper connecting portion located at the upper end and a calibration shell portion located at the lower end, and the cavity provided on the upper cover is communicated with the cavity provided on the main shell, wherein the cavity with an opening downward provided on the upper cover is set as an upper cavity, and the cavity with an opening upward provided on the main shell includes a groove provided on the upper connecting portion and a lower cavity provided on the calibration shell portion.

3. The wireless calibration device for a rapid microbial detector according to claim 2, characterized in that: The main shell body is made of black polyformaldehyde, and the upper end connection part thereof includes an external threaded connection end and an outer ring body at the bottom of the thread. The calibration shell body is configured as a cone, and a plurality of evenly distributed first through holes are provided in the middle of the cone. The lower end of the cone is a small end of the cone, and two parallel vertical walls are provided at the bottom of the small end. The vertical walls are symmetrically arranged with respect to the center plane, and a connected inclined wall is provided between the vertical wall and the wall of the cone, and a second through hole is provided on one side of the vertical wall.

4. The wireless calibration device for a rapid microbial detector according to claim 3, characterized in that: The upper cover electronic unit is also provided with a battery circuit board connected to the battery, which is horizontally arranged below the battery and connected to the main circuit board through a wire; The vertical center plane of the main circuit board coincides with the center plane of the main shell cavity, and the upper end of the main circuit board is connected to the battery circuit board, and the lower end touches the bottom wall of the small end.

5. The wireless calibration device for a rapid microbial detector according to claim 4, characterized in that: The temperature sensor and the light intensity sensor are both soldered on the main circuit board and are located on one side of the main circuit board or on both sides of the main circuit board.

6. The wireless calibration device for a rapid microbial detector according to claim 5, characterized in that: The center of the temperature sensor and the centers of the first through holes are located in the same horizontal plane, and the temperature sensor is closest to one of the first through holes, and their center lines coincide with each other; the number M of the first through holes should satisfy: M>4.

7. The wireless calibration device for a rapid microbial detector according to claim 5, characterized in that: A diameter of the second through hole is larger than an outer diameter of the light intensity sensor.

8. The wireless calibration device for a rapid microbial detector according to claim 4, characterized in that: The battery is configured as a button battery, the button battery is fixedly mounted in a shrapnel battery compartment, the shrapnel battery compartment is fixedly mounted on the battery circuit board, and the battery circuit board is also provided with a wireless communication module for wireless communication connection.

9. The wireless calibration device for a rapid microbial detector according to claim 2, characterized in that: The outer periphery of the upper cover made of black polyoxymethylene is provided with uniformly distributed anti-slip strips.

10. The wireless calibration device for a rapid microbial detector according to claim 1, characterized in that: The main circuit board also includes a single-chip microcomputer controller for controlling temperature collection and light collection, a memory for storing data information, a wireless communication module, and a Hall module for wirelessly connecting the wireless calibration device to the computer through a dedicated interface.

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