Wireless temperature and humidity recording and calibrating device for cold chain

Abstract

The utility model relates to the technical field of equipment calibration, in particular to a wireless temperature and humidity recording and calibrating device for a cold chain, which is convenient to store through a capsule-shaped outer shell; the push-and-pull hook is slidably connected to the shell, so that spatial distributed point distribution of the cold chain equipment, especially a large refrigeration house, is met, and the point distribution efficiency is high; by arranging the liquid crystal display screen and the display lamp on the shell and connecting the liquid crystal display screen and the display lamp with the switch button, the temperature and humidity acquisition record or the electric quantity prompt can be respectively controlled by setting the time of pressing the button of the pressing switch, the working state is clear at a glance, the working under the condition of low electric quantity or no electric quantity is avoided, and the accurate data acquisition is ensured; the ventilation unit is arranged near the temperature and humidity sensor, so that the accuracy of temperature and humidity data acquisition can be ensured; the set communication interface is in a gateway and ZigBee communication mode, so that the number of calibration devices which can be stably connected to a computer in batches at a time is not less than 50, the requirement of huge data processing workload for verification of large equipment such as a refrigeration house is met, and the verification working efficiency is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment calibration, in particular to a wireless temperature and humidity recording and calibration device for a cold chain. Background Art

[0002] The cold chain logistics industry mainly serves the food and pharmaceutical industries. With globalization and the extension of the food supply chain, cold chain logistics has become particularly important. The food industry needs to ensure that the temperature and humidity conditions of food are precisely controlled during transportation and storage to ensure product quality and safety. Biological drugs, vaccines, blood products, etc. need to be stored and transported at low temperatures. Therefore, the demand for cold chain logistics equipment and facilities has surged.

[0003] Cold chain logistics refers to the process of ensuring that temperature and humidity are within the control range to maintain product quality and safety throughout the entire supply chain from production to distribution. For temperature-sensitive products such as food, pharmaceuticals, and biological products, temperature deviations from the specified range may cause the product to spoil, deteriorate, or lose its effectiveness. Cold chain logistics equipment and facilities such as cold storage, refrigerators, and insulated boxes transport and store at appropriate temperature and humidity, reducing product loss and waste, reducing costs and improving efficiency. In addition, temperature and humidity verification records provide traceability of the temperature and humidity history of the product throughout the supply chain.

[0004] At present, wired temperature and humidity detection equipment is mostly used for calibration, which is troublesome to set up. It is difficult to set up equipment with sealing requirements, such as low-temperature refrigerators and low-temperature storage boxes, and it affects the accuracy of temperature and humidity calibration.

[0005] There are also some wireless temperature and humidity recorders that do not have fixed or hanging structures, and it is difficult to meet the measurement needs of cold chain equipment and facilities in some specific scenarios, such as temperature distribution testing of ultra-large cold storage, and spatial layout requirements under different working conditions. Three-dimensional spatial layout is difficult and requires the use of certain auxiliary tools or brackets. At the same time, most temperature and humidity wireless recorders can only be set up and started individually or in batches, lacking large-scale data processing and database functions. The data processing workload for verification of large equipment such as cold storage is huge, even accounting for more than 60% of the entire calibration and verification activities, and is prone to errors. It is difficult for the software to directly provide verification reports that meet GSP requirements, and the verification work efficiency is low. After running out of power, it is necessary to return to the manufacturer to replace the battery module, which affects the use efficiency during the replacement of the battery module. Utility Model Content

[0006] The utility model discloses a wireless temperature and humidity recording and calibration device for a cold chain, aiming to solve the technical problems existing in the prior art.

[0007] The utility model adopts the following technical solutions:

[0008] A wireless temperature and humidity recording and calibration device for cold chain, connected to a computer, an outer shell unit, an electronic unit installed in the inner cavity of the outer shell unit, and a communication interface provided with a gateway and ZigBee;

[0009] The outer shell unit comprises an upper shell and a lower shell which are fixedly connected as one and form an inner cavity, a ventilation unit is provided at the lower end of the outer shell unit, and a push-pull hook is slidably connected to the upper part of the lower shell;

[0010] The electronic unit includes a circuit board vertically installed in the inner cavity and a battery module electrically connected to the circuit board and located at the lower part of the inner cavity, a temperature and humidity sensor is installed at the lower end of the circuit board, and the temperature and humidity sensor corresponds to the position of the ventilation unit;

[0011] The circuit board is also electrically connected to a liquid crystal display screen installed on the upper part of the upper shell and a display light installed in the middle part of the upper shell. A switch button provided in the middle part of the lower shell can be connected to the circuit board under the action of external force.

[0012] In some embodiments, the ventilation unit includes a through hole located at the connection between the upper shell and the bottom of the lower shell, a ventilation grille located on the side, and a plurality of ventilation holes located at the lower part of the upper shell.

[0013] In some embodiments, the ventilation grilles are respectively located on the upper shell and the lower shell and are parallel in the longitudinal direction; the air holes are evenly distributed in the horizontal direction, and the number of the ventilation grilles and the air holes should be no less than 2.

[0014] In some embodiments, the upper and lower ends of the upper shell and the lower shell made of ABS material are respectively provided with arc-shaped walls, so that the outer shell unit is in a capsule shape; the lower end of the lower shell is provided with a battery cover corresponding to the battery module, and the battery cover made of ABS material is screwed on the lower shell.

[0015] In some embodiments, a step hole for slidingly mounting the switch button is further provided in the middle portion of the lower shell, and a micro switch is also fixedly mounted on the circuit board. The micro switch and the switch button are arranged opposite to each other, and the center lines of the micro switch, the switch button, and the step hole coincide, so that under the action of external force, the switch button and the micro switch are connected or disconnected according to a preset time.

[0016] In some embodiments, a slide is provided on the upper portion of the lower shell, and the push-pull hook is matched and installed on the slide, so that under the action of external force, the push-pull hook slides upward and extends, or slides downward and returns to its original position.

[0017] In some embodiments, the push-pull hook is provided with a bottom plane matching the slide, a long groove is provided in the bottom plane, and a plurality of parallel and evenly distributed hand-push partitions are provided on the upper surface of the push-pull hook, and a hanging hole is provided on the upper top of the hand-push partition.

[0018] In some embodiments, the outer shell unit is also provided with an elastic nylon top screw for connecting the upper shell, the circuit board and the lower shell. The elastic top head of the elastic nylon top screw is tightly attached to the bottom of the long groove, so that the push-pull hook can achieve damping-type position self-selection when subjected to external force.

[0019] In some embodiments, the circuit board is also equipped with a single chip microcomputer for controlling the collected temperature and humidity, a memory for storing data information, a ZigBee communication module for transmitting information, and an AD circuit.

[0020] In some embodiments, the communication interface is provided with a platform and a charging port for placing the calibration device, and a gateway and a ZigBee communication module are provided in the communication interface. The gateway is wirelessly connected to the computer, so that the computer can stably connect to no less than 50 calibration devices in a single batch.

[0021] Beneficial effects:

[0022] The utility model discloses a wireless temperature and humidity recording and calibration device for cold chain. Compared with the prior art, the utility model has the following advantages:

[0023] A wireless temperature and humidity recording and calibration device for cold chain, through an outer shell unit and an electronic unit installed in the inner cavity of the outer shell unit, the overall shape of the outer shell is like a capsule, which is convenient for storage; the liquid crystal display screen installed at the upper end of the upper shell, the display light installed in the middle and the switch button installed in the middle of the lower shell are respectively electrically connected to the circuit board provided by the electronic unit, and a temperature and humidity sensor is also installed at the lower end of the circuit board. The switch button is touchably connected to the micro switch installed on the circuit board. The collection and storage of temperature and humidity or the display of the current battery module power can be controlled by setting the length of the touch time, so as to avoid starting the cold chain calibration work when the power is low or no, resulting in data collection. Failure; when working, the display light flashes according to the sampling interval of the temperature and humidity sensor, so that the working status is clear at a glance; a ventilation unit is provided on the outer shell near the temperature and humidity sensor to ensure the accuracy of temperature and humidity data collection; a push-pull hook is slidably connected to the outer shell, which can be directly hung on a bracket or a protruding position in the space after being pushed out, which meets the spatial distributed distribution of cold chain equipment, especially large cold storage, and the distribution is efficient; the communication interface is set as a gateway and ZigBee communication mode, so that the computer can stably connect to no less than 50 calibration devices in a single batch, which meets the huge data processing workload of verification of large equipment such as cold storage, and greatly improves the verification work efficiency. 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 wireless temperature and humidity recording and calibration device for cold chain disclosed in the embodiment of the utility model;

[0026] Figure 2 for Figure 1 A-direction view;

[0027] Figure 3 for Figure 1 B-direction view;

[0028] Figure 4 for Figure 3 E-direction view;

[0029] Figure 5 for Figure 3 F-direction view;

[0030] Figure 6 for Figure 2 I enlarged view;

[0031] Figure 7 This is the electronic unit framework diagram;

[0032] Figure 8 It is a schematic diagram of the technical solution structure of the switch button;

[0033] Fig. 9 A schematic diagram of the technical solution structure of placing the calibration device on the communication interface;

[0034] Fig.10 for Fig. 9 N-directional view.

[0035] In the figure:

[0036] Outer shell unit 1; upper shell 11; arc wall 111; through hole 112; notch 113; lower shell 12; slideway 121; stop edge 122; step hole 123; buckle protrusion 124; boss 125; ventilation unit 13; ventilation hole 131; bottom through hole 132; ventilation grille 133; inner cavity 14; liquid crystal display screen 2; electronic unit 3; circuit board 31; micro switch 311; single chip computer 312; AD circuit 313; ZigBee Communication module 314; memory 315; temperature and humidity sensor 316; battery module 32; battery shrapnel 321; display light 4; push-pull hook 5; main body 51; hand-push partition 52; bottom plate 53; hanging hole 54; long groove 55; elastic nylon top screw 6; elastic top head 61; switch button 7; large boss 71; small boss 72; push rod 73; groove 74; battery cover 8; communication interface 9; platform 91; gateway 92; charging port 93; computer 10. DETAILED DESCRIPTION

[0037] 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 2.

[0038] 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.

[0039] 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.

[0040] like Figure 1-Figure 10 As shown, the technical solution disclosed by the utility model is:

[0041] A wireless temperature and humidity recording and calibration device for cold chain is connected to a computer 10, comprising an outer shell unit 1, an electronic unit 3 installed in an inner cavity 14 of the outer shell unit 1, and a communication interface 9 provided with a gateway 92 and ZigBee.

[0042] The outer shell unit 1 comprises an upper shell 11 and a lower shell 12 which are fixedly connected as one and form an inner cavity 14 . A ventilation unit 13 is provided at the lower end of the outer shell unit 1 , and a push-pull hook 5 is slidably connected to the upper part of the lower shell 12 .

[0043] The electronic unit 3 includes a circuit board 31 vertically installed in the inner cavity 14 and a battery module 32 electrically connected to the circuit board 31 and located at the lower part of the inner cavity 14. A temperature and humidity sensor 316 is installed at the lower end of the circuit board 31, and the temperature and humidity sensor 316 corresponds to the position of the ventilation unit 13.

[0044] The circuit board 31 is also electrically connected to the LCD screen 2 installed on the upper part of the upper shell 11 and the display light 4 installed in the middle part of the upper shell 11. The switch button 7 provided in the middle part of the lower shell 12 can be connected to the circuit board 31 under the action of external force. The LCD screen 2 is installed in the through hole 112 in the upper part of the upper shell 11.

[0045] The computer 10 is connected to a communication interface 9, which is provided with a platform 91 for placing the calibration device and a charging port 93. A gateway 92 and a ZigBee communication module are provided in the communication interface 9. The gateway 92 is wirelessly connected to the computer 10, so that the computer 10 can stably connect to no less than 50 calibration devices in a single batch.

[0046] like Figures 1 to 10 As shown, the preferred embodiment of the utility model:

[0047] A wireless temperature and humidity recording and calibration device for cold chain comprises an outer shell unit 1, an electronic unit 3 installed in an inner cavity 14 of the outer shell unit 1, and a communication interface 9 provided with a gateway 92 and ZigBee.

[0048] The outer shell unit 1 comprises an upper shell 11 and a lower shell 12 which are fixedly connected as one and form an inner cavity 14 . A ventilation unit 13 is provided at the lower end of the outer shell unit 1 , and a push-pull hook 5 is slidably connected to the upper part of the lower shell 12 .

[0049] The upper shell 11 and the lower shell 12 are snap-connected with the recess 113 of the upper shell 11 through the snap-on protrusion 124 of the lower shell 12 at the joint surface, and then fixedly connected as a whole through fasteners (not shown in the figure); the upper shell 11 made of ABS material and the lower shell 12 made of ABS material are respectively provided with arc walls 111 at the upper and lower ends, so that the outer shell unit 1 is in a capsule shape, which is convenient for storage.

[0050] The ventilation unit 13 includes a bottom through hole 132 located at the bottom connection between the upper shell 11 and the lower shell 12 , a ventilation grille 133 located at the side, and a plurality of ventilation holes 131 located at the lower part of the upper shell 11 .

[0051] The ventilation grilles 133 are respectively located on the upper shell 11 and the lower shell 12, and are arranged in parallel along the longitudinal direction; the vents 131 are evenly distributed in the horizontal direction, and the number of the ventilation grilles 133 and the vents 131 should be no less than 2. In this preferred embodiment, the ventilation grilles 133 are selected as 2, and the number of the vents 131 is set to 3. The 3 vents 131 are evenly distributed in the horizontal direction, such as Figure 3 , Figure 4 shown.

[0052] The upper part of the upper shell 11 is equipped with a liquid crystal display screen 2, and the middle part is equipped with a display light 4, both of which are located in the middle of the upper shell 11. The display light 4 is in the shape of a water drop. Figure 3 shown.

[0053] A slide 121 is provided at the upper end of the lower shell 12, and retaining edges 122 are provided on both sides of the slide 121. The push-pull hook 5 slides along the slide 121 in the retaining edge 122. The push-pull hook 5 is matched and installed on the slide 121. The bottom plate 53 provided on the push-pull hook 5 matches and fits with the slide 121, and can slide along the slide 121 under the action of external thrust.

[0054] The push-pull hook 5 includes a main body 51, a bottom plate 53 arranged at the bottom of the main body 51 and matching with the slide 121 of the lower shell 12, a long groove 55 is arranged on the bottom plate 53 along the running direction, and a hand-push partition 52 is arranged at the upper end of the main body 51. The hand-push partition 52 has several parallel strips for hand pushing, and a hanging hole 54 is arranged on the upper top of the hand-push partition 52; so that under the action of the external force of hand pushing, the push-pull hook 5 slides upward, and the hanging hole 54 extends out, and can be directly hung on a bracket or a protruding position in the space, which meets the spatial distributed distribution of cold chain equipment, especially large cold storage, and the distribution is efficient. After use, the hand-push partition 52 is pushed back by hand, and the push-pull hook 5 slides back to its position.

[0055] An elastic nylon top screw 6 for connecting the upper shell 11, the circuit board 31 and the lower shell 12 is also provided in the outer shell unit 1. The screw end of the elastic nylon top screw 6 is screwed into the center hole of the horizontally extending boss 125 on the inner wall of the lower shell 12, and the elastic top head 61 of the elastic nylon top screw 6 is tightly attached to the bottom plane of the long groove 55, so that the push-pull hook 5 can achieve damping position self-selection when subjected to external force.

[0056] The lower shell 12 is provided with a step hole 123 in the middle part, and the switch button 7 is installed in the step hole 123 along the horizontal direction, and the center lines of the two coincide; the large boss 71 and the small boss 72 provided on the switch button 7 are matched with the steps provided on the step hole 123 respectively, and the push rod 73 provided on the switch button 7 extends to the inner cavity 14 of the outer shell. When the switch button 7 is pressed by hand, the switch button 7 can slide along the step hole 123.

[0057] A battery cover 8 corresponding to the battery module 32 is disposed at the lower end of the lower shell 12 . The battery cover 8 is made of ABS material and is fixed to the lower shell 12 by screwing.

[0058] The upper surface of the battery cover 8 is provided with a cross groove, and the battery cover 8 can be tightened or loosened by inserting a screwdriver into the cross groove and rotating it.

[0059] The electronic unit 3 includes a circuit board 31 vertically installed in the inner cavity 14 and a battery module 32 located at the lower part of the inner cavity 14 and electrically connected to the circuit board 31. A battery spring 321 connected to the circuit board 31 is installed on the battery module 32. In this example, the battery module 32 is configured as a lithium battery.

[0060] A temperature and humidity sensor 316 is installed at the lower end of the circuit board 31 , and the temperature and humidity sensor 316 corresponds to the position of the ventilation unit 13 , thereby ensuring the accuracy of temperature and humidity data collection by the temperature and humidity sensor 316 .

[0061] The circuit board 31 is also connected to the liquid crystal display screen 2 installed on the upper part of the upper shell 11 and the display light 4 installed in the middle part of the upper shell 11 .

[0062] A micro switch 311 is also fixedly mounted on the circuit board 31. The micro switch 311 is arranged opposite to the switch button 7. The end of the push rod 73 provided on the switch button 7 is provided with a groove 74. The center lines of the micro switch 311, the switch button 7 and the step hole 123 coincide with each other. The contour of the groove 74 is outwrapped around the micro switch 311, so that when the switch button 7 is pushed, the groove 74 can smoothly push the micro switch 311.

[0063] The circuit board 31 is also equipped with a single chip microcomputer 312 for controlling the temperature and humidity, a memory 315 for storing data information, a ZigBee communication module 314 for transmitting information, and an AD circuit 313.

[0064] Multiple functions can be realized by the switch button 7: the LCD screen 2 can be switched on / off by short pressing the switch button 7. Short pressing means pressing the button with your finger for no more than 2 seconds. In the working state, the device is started, and the LCD screen 2 can display the currently collected temperature, humidity and battery power when it is on; in the non-working state, the LCD screen 2 only displays the current battery power when it is on. When real-time observation is not required, the screen can be off to save power.

[0065] Long press the switch button 7, long press means pressing for more than 3 seconds, the switch button 7 touches the micro switch 311 on the circuit board 31, after pressing the micro switch 311 for more than 3 seconds, the device will be automatically activated, and the start / stop working conversion of the temperature and humidity sensor 316 can be realized. When starting, the single-chip microcomputer 312 controls the temperature and humidity sensor 316, which is connected to the computer 10 by the ZigBee communication module 314. The temperature and humidity sensor 316 can be started according to the sampling interval and working time set by the computer terminal last time stored in the memory 315 on the circuit board 31, such as a sampling interval of 1s and a working time of 3h, and automatically starts data collection and recording through the AD circuit 313; when in working state, the temperature and humidity sensor 316 works, and the water drop-shaped display light 4 on the surface of the upper shell 11 flashes according to the sampling interval. The water drop display light is an acrylic shell and flashes in blue. When stopped, the temperature and humidity sensor 316 stops working, and the temperature and humidity data collected during operation will be stored in the memory 315.

[0066] The LCD screen 2 has a power prompt function, and the power level is displayed with 3 grids. When it is displayed as 0 grid, the battery needs to be replaced to avoid starting the cold chain calibration work when the power is low or no power, which will cause data collection failure.

[0067] The computer 10 is connected to the communication interface 9, and the communication interface 9 is provided with a platform 91 for placing the calibration device and a charging port 93. The communication interface 9 is provided with a gateway 92 and a ZigBee communication module. The gateway 92 is wirelessly connected to the computer 10, so that the computer 10 can stably connect to no less than 50 calibration devices in a single batch, meeting the huge data processing workload demand for verification of large equipment such as cold storage, and greatly improving the verification work efficiency.

[0068] 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 temperature and humidity recording and calibration device for cold chain, connected to a computer, characterized in that: It includes an outer shell unit, an electronic unit installed in the inner cavity of the outer shell unit, and a communication interface provided with a gateway and ZigBee; The outer shell unit comprises an upper shell and a lower shell which are fixedly connected as one and form an inner cavity, a ventilation unit is provided at the lower end of the outer shell unit, and a push-pull hook is slidably connected to the upper part of the lower shell; The electronic unit includes a circuit board vertically installed in the inner cavity and a battery module electrically connected to the circuit board and located at the lower part of the inner cavity, a temperature and humidity sensor is installed at the lower end of the circuit board, and the temperature and humidity sensor corresponds to the position of the ventilation unit; The circuit board is also electrically connected to a liquid crystal display screen installed on the upper part of the upper shell and a display light installed in the middle part of the upper shell. A switch button provided in the middle part of the lower shell can be connected to the circuit board under the action of external force.

2. The wireless temperature and humidity recording and calibration device for cold chain according to claim 1 is characterized in that: The ventilation unit comprises a through hole located at the connection between the upper shell and the bottom of the lower shell, a ventilation grille located at the side, and a plurality of ventilation holes located at the lower part of the upper shell.

3. The wireless temperature and humidity recording and calibration device for cold chain according to claim 2 is characterized in that: The ventilation grilles are respectively located on the upper shell and the lower shell and are parallel in the longitudinal direction; the air holes are evenly distributed in the horizontal direction, and the number of the ventilation grilles and the air holes should be no less than 2.

4. The wireless temperature and humidity recording and calibration device for cold chain according to claim 1 is characterized in that: The upper and lower ends of the upper shell and the lower shell made of ABS material are respectively provided with arc walls, so that the outer shell unit is in a capsule shape; the lower end of the lower shell is provided with a battery cover corresponding to the battery module, and the battery cover made of ABS material is screwed on the lower shell.

5. The wireless temperature and humidity recording and calibration device for cold chain according to claim 4 is characterized in that: A step hole for slidingly mounting the switch button is also provided in the middle of the lower shell body, and a micro switch is also fixedly mounted on the circuit board. The micro switch and the switch button are arranged opposite to each other, and the center lines of the micro switch, the switch button and the step hole coincide, so that under the action of external force, the switch button and the micro switch are connected or disconnected according to a preset time.

6. The wireless temperature and humidity recording and calibration device for cold chain according to claim 4 is characterized in that: A slideway is provided on the upper portion of the lower shell, and the push-pull hook is matched and installed on the slideway, so that under the action of external force, the push-pull hook slides upward to extend, or slides downward to return to its position.

7. The wireless temperature and humidity recording and calibration device for cold chain according to claim 6 is characterized in that: The push-pull hook is provided with a bottom plane matching the slideway, a long groove is provided in the bottom plane, a plurality of parallel and evenly distributed hand-pushed partitions are provided on the upper surface of the push-pull hook, and a hanging hole is provided on the upper top of the hand-pushed partition.

8. The wireless temperature and humidity recording and calibration device for cold chain according to claim 7 is characterized in that: The outer shell unit is also provided with an elastic nylon top screw for connecting the upper shell, the circuit board and the lower shell. The elastic top head of the elastic nylon top screw is tightly attached to the bottom of the long groove, so that the push-pull hook can achieve damping position self-selection when subjected to external force.

9. The wireless temperature and humidity recording and calibration device for cold chain according to claim 1, characterized in that: The circuit board is also equipped with a single chip microcomputer for controlling the collected temperature and humidity, a memory for storing data information, a ZigBee communication module for transmitting information and an AD circuit.

10. The wireless temperature and humidity recording and calibration device for cold chain according to claim 1, characterized in that: The communication interface is provided with a platform for placing the calibration device and a charging port. A gateway and a ZigBee communication module are provided in the communication interface. The gateway is wirelessly connected to the computer, so that the computer can stably connect to no less than 50 calibration devices in a single batch.

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