Portable cold chain monitoring thermometer in-situ calibration device

Abstract

The utility model relates to the technical field of device calibration, in particular to a portable cold chain monitoring thermometer in-situ calibration device. The thermostatic bath unit is installed in an inner cavity of the outer box body, the thermostatic control unit is used for maintaining the stability of a thermostatic bath temperature field of the thermostatic bath unit, the power supply module is used for supplying power, and the display panel is used for displaying temperature measurement information in real time. The tested cold chain thermometer is in a sealed state through a thermostatic bath arranged in the thermostatic bath unit; the constant-temperature control unit is located at the bottom of the constant-temperature bath and comprises a semiconductor module connected with a circuit board, a heat dissipation module and a temperature control sensor for measuring the temperature in real time, and the circuit board is in wireless communication connection with an external controller for real-time temperature adjustment detection; according to the device, calibration personnel can conveniently carry out on-site metering calibration, in-situ calibration can be carried out on the cold-chain thermometer under the condition that the device is not disassembled, the device is suitable for scenes where the cold-chain thermometers are distributed in many places, efficiency is improved, calibration time is saved, and calibration is accurate and reliable.

Description

Technical Field

[0001] The utility model relates to the technical field of medical equipment calibration, in particular to an in-situ calibration device for a portable cold chain monitoring thermometer. Background Art

[0002] Cold chain transportation refers to the process of transporting biopharmaceutical products from the manufacturer to the point of use under a series of temperature-controlled environments.

[0003] With the development of modern science and technology, the biopharmaceutical industry is in a stage of rapid growth. The particularity of biopharmaceutical products requires that they be managed by cold chain throughout the entire production process. Biopharmaceutical products such as vaccines, biologics and blood products are very sensitive to environmental factors such as temperature and humidity. If inappropriate temperature or humidity conditions occur during transportation, these products may lose their activity, reduce their efficacy or even cause serious safety problems. Cold chain transportation plays a vital role in biopharmaceuticals and aims to ensure the safety and effectiveness of products. Therefore, ensuring the safety and accuracy of cold chain transportation is crucial for biopharmaceutical companies.

[0004] In the management of pharmaceutical business, it is required to install automatic cold chain temperature monitoring, display, recording, control and alarm equipment in the procurement, storage, sales and transportation of pharmaceuticals, and establish a complete and effective pharmaceutical temperature traceability system. In recent years, the demand for cold chain probe traceability has increased tremendously, and covers the upper and lower alarm ranges of the probes. These temperature monitoring and traceability systems are composed of a large number of cold chain thermometers and software systems, but the cold chain thermometers are fixedly placed in different locations of cold chain equipment and facilities and cannot be disassembled. They cannot be sent to the Institute of Metrology for traceability using constant temperature baths and standard thermometers as conventional thermometers.

[0005] There are several existing traceability methods:

[0006] 1) Take a thermometer with a relatively higher accuracy level, place it in the same position as the cold chain thermometer being calibrated, and compare the difference in temperature values ​​measured by the two. This method has poor accuracy and no traceability. It can only serve as a comparison and verification, and can only compare the temperature of the environment. For example, a cold storage at -4°C cannot be adjusted. The difference can only be compared under this condition. However, according to the requirements, the calibration range covers the upper and lower alarm ranges of the probe.

[0007] 2) Disassemble the cold chain thermometer and send it to the Institute of Metrology for calibration. The problem is that most of them cannot be disassembled, so the user may prepare two sets for replacement during the calibration period. Moreover, the disassembled calibrated thermometer is separated from the monitoring and traceability system software. Even if the difference collected by the thermometer is confirmed after calibration, the entire system cannot be calibrated and evaluated.

[0008] Therefore, there is an urgent need for a portable device for in-situ calibration of cold chain thermometers. Utility Model Content

[0009] The utility model discloses a portable cold chain monitoring thermometer in-situ calibration device, aiming to solve the technical problems existing in the prior art.

[0010] The utility model adopts the following technical solutions:

[0011] A portable cold chain monitoring thermometer in-situ calibration device comprises an outer box and a thermostatic bath unit installed in a chamber of the outer box, a thermostatic control unit for maintaining the stability of the thermostatic bath temperature field provided in the thermostatic bath unit, a power module for powering, and a display panel for real-time display of temperature measurement information; wherein,

[0012] The thermostatic tank unit comprises a thermostatic tank in a sealed state for containing the cold chain thermometer to be tested;

[0013] The constant temperature control unit is located at the bottom of the constant temperature bath, and includes a semiconductor module, a heat dissipation module and a temperature control sensor for real-time temperature measurement. The temperature control sensor, the semiconductor module and the heat dissipation module are all connected to a circuit board, and the circuit board is wirelessly connected to an external controller.

[0014] In some embodiments, the outer box includes a box body and a box cover connected by a side end, a shoulder strap for easy carrying is installed on the outer wall of the box body, and a charging port and a control switch of the power module are also provided.

[0015] In some embodiments, the constant temperature tank unit includes a constant temperature tank and a metal mesh basket installed in the constant temperature tank, and the cold chain thermometer to be measured is placed in the metal mesh basket.

[0016] In some embodiments, the thermostatic bath includes a thermostatic bath body having an inner chamber and an insulating upper cover located on the top of the thermostatic bath body. The insulating upper cover fits tightly on the thermostatic bath body so that the inner chamber of the bath is in a sealed state.

[0017] In some embodiments, a plurality of magnetic buckles are respectively provided on the peripheral joint surfaces of the thermostatic bath body and the thermal insulation upper cover, and the magnetic buckles are evenly distributed.

[0018] In some embodiments, the inner chamber of the trough body is configured as a cube structure, and a metal mesh basket for placing the cold chain thermometer to be measured is movably installed at the top of the inner chamber of the trough body, a temperature control sensor is installed at the bottom of the inner chamber of the trough body, and ventilation holes of the heat dissipation module are respectively provided at the diagonals of the bottom.

[0019] In some embodiments, the semiconductor module for cooling / heating and the heat dissipation module for heat dissipation are sequentially installed on the bottom outer wall of the thermostatic bath, and the semiconductor module and the heat dissipation module are both connected to the power module.

[0020] In some embodiments, at least one pair of the semiconductor modules are arranged side by side and laid flat on the bottom wall of the thermostatic bath, and the heat dissipation module is arranged to match and correspond to the semiconductor modules.

[0021] In some embodiments, the display panel is provided with a power indicator light, a temperature status indicator light and a temperature display screen, and a through hole for placing the constant temperature bath is provided in the middle of the display panel. A bracket is also installed on the bottom wall of the display panel, and the circuit board is installed on the bracket. The temperature status indicator light and the temperature display screen are both connected to the circuit board. Beneficial Effects

[0022] The utility model discloses a portable cold chain monitoring thermometer in-situ calibration device. Compared with the prior art, the utility model has the following advantages:

[0023] A portable in-situ calibration device for cold chain monitoring thermometers is provided. An outer box with a shoulder strap is provided. A sealed constant temperature bath unit for holding the cold chain thermometer to be measured is placed in an inner chamber. A constant temperature control unit is provided at the bottom of the constant temperature bath unit. An external controller for controlling the constant temperature control unit to maintain the stability of the temperature field of the constant temperature bath is provided. The temperature measurement situation can be observed in real time by providing a display panel. The device is easy to carry, which is convenient for calibration personnel to carry the calibration device to the site for metrological calibration. The cold chain thermometer can be calibrated in-situ without disassembly. The device is suitable for scenes with many cold chain thermometers, which improves efficiency, saves calibration time, and the calibration is accurate and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] 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:

[0025] Figure 1 It is a schematic diagram of the technical solution structure of the portable cold chain monitoring thermometer in-situ calibration device disclosed in the embodiment of the utility model;

[0026] Figure 2 for Figure 1 External view of

[0027] Figure 3 for Figure 2 AA section view;

[0028] Figure 4 for Figure 2 B-direction view;

[0029] Figure 5 This is the circuit board block diagram.

[0030] In the figure:

[0031] Outer box 1; box body 11; box cover 12; shoulder strap 13; charging port 14; control switch 15; unpacking handle 16; constant temperature tank unit 2; constant temperature tank 21; constant temperature tank body 211; tank inner chamber 212; insulation cover 213; magnetic buckle 214; metal mesh basket 22; display panel 25; power indicator light 251; status indicator light 252; through hole 253; temperature display screen 254; bracket 255; constant temperature control unit 3; semiconductor module 31; heat dissipation module 32; temperature control sensor 33; circuit board 34; PID controller 341; temperature acquisition module 342; single chip computer 343; wireless communication module 344; storage module 345; power module 4; controller 5; cold chain thermometer 6; wire 7. DETAILED DESCRIPTION

[0032] 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 claims is an open term, so it should be interpreted as "including but not limited to".

[0033] 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.

[0034] 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.

[0035] like Figure 1-Figure 5 As shown, the technical solution disclosed by the utility model is:

[0036] A portable cold chain monitoring thermometer in-situ calibration device comprises an outer box 1 and a thermostatic bath unit 2 installed in the inner chamber of the outer box 1, a thermostatic control unit 3 for maintaining the temperature field stability of a thermostatic bath 21 provided in the thermostatic bath unit 2, a power module 4 for power supply, and a display panel 25 for real-time display of temperature measurement information; wherein,

[0037] The thermostatic tank unit 2 includes a sealed thermostatic tank 21 for containing the cold chain thermometer 6 to be measured.

[0038] The constant temperature control unit 3 is located at the bottom of the constant temperature bath 21, and includes a semiconductor module 31, a heat dissipation module 32 and a temperature control sensor 33 for real-time temperature measurement. The temperature control sensor 33, the semiconductor module 31 and the heat dissipation module 32 are all connected to a circuit board 34, and the circuit board 34 is wirelessly connected to an external controller 5.

[0039] like Figure 1-Figure 5 As shown, the preferred embodiment of the utility model:

[0040] A portable cold chain monitoring thermometer in-situ calibration device comprises an outer box 1 and a constant temperature bath unit 2 installed in an inner chamber of the outer box 1, a constant temperature control unit 3 for maintaining the temperature field stability of a constant temperature bath 21 provided in the constant temperature bath unit 2, a power supply module 4 for power supply, and a display panel 25 for displaying temperature measurement information in real time.

[0041] The outer box body 1 includes a box body 11 and a box cover 12 connected by one side end. In this example, a buckle connection (not shown in the figure) is adopted. The box cover 12 can be opened upward by holding the opening handle 16. A carrying strap 13 is installed on the outer wall of the box body 11, which is convenient for calibration personnel to carry the calibration device to the site for metrological calibration. A charging port 14 for the power module 4 and a control switch 15 for starting and shutting down the operation of the equipment are also provided; therefore, the device is easy to carry, and the cold chain thermometer can be calibrated in situ without disassembly.

[0042] The thermostatic tank unit 2 includes a thermostatic tank 21 and a metal mesh basket 22 installed in the thermostatic tank 21 , and the cold chain thermometer 6 to be measured is placed in the metal mesh basket 22 .

[0043] The thermostatic bath 21 includes a thermostatic bath body 211 having an inner chamber 212 and a heat-insulating upper cover 213 located on the top of the thermostatic bath body 211 . The heat-insulating upper cover 213 fits tightly on the thermostatic bath body 211 , so that the inner chamber 212 is in a sealed state.

[0044] The inner chamber 212 of the tank body is configured as a cube structure. In the present embodiment, it is configured as a rectangular parallelepiped structure. The metal mesh basket 22 is movably placed at the upper end of the inner chamber 212 of the tank body. The probe end of the calibrated cold chain thermometer 6 is placed in the constant temperature tank 21. A temperature control sensor 33 is installed in the bottom space. Two vents of the heat dissipation module 32 are respectively provided at the diagonals of the bottom. The heat dissipation module 32 selected in this example is two sets of fans. After the airflows blown out from the two diagonal vents collide, the temperature of the inner chamber 212 of the tank body is uniform.

[0045] In this embodiment, a plurality of magnetic buckles 214 are respectively arranged on the peripheral joint surfaces of the thermostatic bath body 211 and the thermal insulation upper cover 213, and the magnetic buckles 214 are evenly distributed to ensure that the thermostatic bath 21 is in a sealed state and to ensure the stability of the low-temperature field inside the thermostatic bath 21.

[0046] The constant temperature control unit 3 is located at the bottom of the constant temperature bath 21, and includes a semiconductor module 31, a heat dissipation module 32 and a temperature control sensor 33 for real-time temperature measurement. The temperature control sensor 33, the semiconductor module 31, and the heat dissipation module 32 are all connected to a circuit board 34 via a wire 7, and the circuit board 34 is wirelessly connected to an external controller 5.

[0047] In this embodiment, the semiconductor module 31 for cooling / heating and the heat dissipation module 32 for heat dissipation are sequentially installed on the bottom outer wall of the constant temperature bath 21 , and the semiconductor module 31 and the heat dissipation module 32 are both connected to the power module 4 .

[0048] The power module 4 described in this embodiment is configured as a lithium battery, which can be used to power the entire calibration device. At the same time, there is also a charging port 14 on the outer box 1 of the calibration device, which can be used for external power supply and battery charging.

[0049] At least one pair of semiconductor modules 31 are arranged side by side and laid flat on the bottom wall of the thermostatic bath 21. In this embodiment, two semiconductor modules 31 are selected and installed side by side on the outer bottom wall of the thermostatic bath 21. Two groups of heat dissipation modules 32, i.e., two groups of fans, are respectively matched with the semiconductor modules 31 to ensure that the internal temperature of the thermostatic bath 21 is not affected by the heat source generated by the calibration device itself.

[0050] The circuit board 34 includes a temperature acquisition module 342 connected to the temperature control sensor 33 through a wire 7, a storage module 345 for data storage, a PID controller 341 based on the temperature data collected by the temperature control sensor 33, and a single-chip microcomputer 343 that controls the temperature measurement of the temperature control sensor 33 and is connected to the external controller 5 through a wireless communication module 344; the PID controller 341 adjusts the temperature inside the constant temperature bath 21 in real time so that its internal temperature meets the calibrated temperature field requirement range; the controller 5 selects a tablet computer or a mobile phone.

[0051] An APP is installed on a tablet or mobile phone to set the temperature of the calibration device. Using Bluetooth communication, the semiconductor module 31 can be controlled to cool or heat to reach the set temperature.

[0052] The display panel 25 is provided with a power indicator light 251, a temperature status indicator light 252 and a temperature display screen 254, and a through hole 253 for placing the constant temperature tank 21 is provided in the middle of the display panel 25, that is, the display panel 25 is located at the top of the inner chamber 212 of the tank body, and a bracket 255 is also installed on the bottom wall of the display panel 25. The circuit board 34 is installed on the bracket 255, and the temperature status indicator light 252 and the temperature display screen 254 are connected to the circuit board 34. The power indicator light 251 is connected to the power module 4. When the battery is charged, the power indicator light 251 lights up red after turning on the machine, and the power indicator light 251 goes out after turning off the machine. The display panel 25 can also display the power level, which is convenient for the calibration personnel to charge in time.

[0053] The temperature display screen 254 displays the set temperature and the real-time temperature for easy observation.

[0054] In this embodiment, when the real-time temperature is stabilized at the set temperature, the temperature status indicator light 252 is always green; when the real-time temperature is not stabilized at the set temperature, the indicator light flashes.

[0055] The temperature display screen 254 provided on the calibration device is used to display the set temperature and the current temperature in the constant temperature bath 21, which is convenient for the calibration personnel to observe whether the temperature in the constant temperature bath 21 has reached a stable state, so as to record the temperature of the calibrated cold chain thermometer 6 and the standard thermometer in a stable state and obtain the calibration result.

[0056] In this embodiment, when not connected to a power source, the battery life of the calibration device is ≥4 hours; the temperature range of the calibration device is (-20 to 25)°C, which can meet the calibration requirements of most cold chain thermometers 6, and the temperature control accuracy can reach ±0.1°C, and the temperature uniformity is ±0.2°C.

[0057] 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 portable cold chain monitoring thermometer in-situ calibration device, characterized in that: It includes an outer box body and a thermostatic bath unit installed in the inner chamber of the outer box body, a thermostatic control unit for maintaining the stability of the thermostatic bath temperature field provided in the thermostatic bath unit, a power module for power supply, and a display panel for real-time display of temperature measurement information; wherein, The thermostatic tank unit comprises a thermostatic tank in a sealed state for containing the cold chain thermometer to be tested; The constant temperature control unit is located at the bottom of the constant temperature bath, and includes a semiconductor module, a heat dissipation module and a temperature control sensor for real-time temperature measurement. The temperature control sensor, the semiconductor module and the heat dissipation module are all connected to a circuit board, and the circuit board is wirelessly connected to an external controller.

2. The portable cold chain monitoring thermometer in-situ calibration device according to claim 1 is characterized in that: The outer box body comprises a box body and a box cover connected by one side end. A shoulder strap for easy carrying is installed on the outer wall of the box body, and a charging port and a control switch of the power module are also provided.

3. The portable cold chain monitoring thermometer in-situ calibration device according to claim 1 is characterized in that: The constant temperature tank unit includes a constant temperature tank and a metal mesh basket installed in the constant temperature tank, and the cold chain thermometer to be measured is placed in the metal mesh basket.

4. The portable cold chain monitoring thermometer in-situ calibration device according to claim 3 is characterized in that: The thermostatic bath comprises a thermostatic bath body provided with an inner chamber of the bath body and a heat-insulating upper cover located on the top of the thermostatic bath body. The heat-insulating upper cover is tightly attached to the thermostatic bath body, so that the inner chamber of the bath body is in a sealed state.

5. The portable cold chain monitoring thermometer in-situ calibration device according to claim 4 is characterized in that: A plurality of magnetic buckles are respectively arranged on the peripheral joint surfaces of the thermostatic bath body and the thermal insulation upper cover, and the magnetic buckles are evenly distributed.

6. The portable cold chain monitoring thermometer in-situ calibration device according to claim 5 is characterized in that: The inner chamber of the trough body is set as a square structure, and a metal mesh basket for placing the cold chain thermometer to be measured is movably installed on the top of the inner chamber of the trough body, a temperature control sensor is installed at the bottom of the inner chamber of the trough body, and ventilation holes of the heat dissipation module are respectively provided at the diagonals of the bottom.

7. The portable cold chain monitoring thermometer in-situ calibration device according to claim 6 is characterized in that: The semiconductor module for cooling / heating and the heat dissipation module for heat dissipation are sequentially installed on the bottom outer wall of the constant temperature bath, and the semiconductor module and the heat dissipation module are both connected to the power module.

8. The portable cold chain monitoring thermometer in-situ calibration device according to claim 7 is characterized in that: At least one pair of semiconductor modules are arranged side by side and laid flat on the bottom wall of the thermostatic bath. The heat dissipation module is arranged to match and correspond to the semiconductor modules.

9. The portable cold chain monitoring thermometer in-situ calibration device according to claim 1 is characterized in that: The display panel is provided with a power indicator light, a temperature status indicator light and a temperature display screen, and a through hole for placing the constant temperature bath is provided in the middle of the display panel. A bracket is also installed on the bottom wall of the display panel, and the circuit board is installed on the bracket. The temperature status indicator light and the temperature display screen are both connected to the circuit board.

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