Refrigerated container data acquisition equipment

Abstract

The utility model discloses a refrigerated container data acquisition device, which belongs to the technical field of refrigerated container monitoring and comprises a shell, an annular indicating lamp is fixedly arranged on the periphery of one side of the shell and connected with a single chip microcomputer fixedly arranged in the shell, and the single chip microcomputer is connected with a data acquisition module. A data plug and a piezoelectric energy collector are further fixedly arranged in the shell, the data plug is connected with the single-chip microcomputer, the piezoelectric energy collector is connected with a super capacitor fixedly arranged in the shell, and the super capacitor is connected with the single-chip microcomputer. The device is used for collecting key parameters of the internal environment of the refrigerated container, such as temperature and humidity, and has the characteristics of simplifying use and enhancing visibility and portability.

Description

Technical Field

[0001] The utility model belongs to the technical field of refrigerated container monitoring, in particular to a refrigerated container data acquisition device. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] With the rapid development of global cold chain logistics, the demand for monitoring the internal environment of refrigerated containers continues to grow. Currently, refrigerated container data is acquired and transmitted through data acquisition equipment. Existing data acquisition equipment often has indicator lights in the form of small bulbs, positioned in a single, fixed position. The indicator lights have limited viewing angles and light coverage, and the status of the data acquisition equipment must be pointed in an easily observable direction. However, when the equipment is operating at a specific angle, i.e., when the indicator lights are obscured, it is difficult to observe its status, increasing the difficulty of use and making it impossible to detect abnormal conditions in a timely manner. Furthermore, existing data acquisition equipment is inconvenient to store when not in use and can be easily lost or left behind. Existing data acquisition equipment requires installation in the refrigeration control box of the refrigerated container to read data through the refrigeration mainboard. This is complex to install and requires an external power supply to ensure power supply. This increases the operating cost and energy consumption of the equipment during long-distance transportation. Utility Model Content

[0004] In order to solve the technical problems existing in the prior art, the utility model provides a refrigerated container data acquisition device for collecting key parameters of the internal environment of the refrigerated container, such as temperature, humidity, etc., which has the characteristics of simplified use, enhanced visibility and portability.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0006] A refrigerated container data acquisition device includes a shell, a ring-shaped indicator light fixedly provided on the outer periphery of one side of the shell, the ring-shaped indicator light is connected to a single-chip microcomputer fixedly provided inside the shell, a data plug and a piezoelectric energy harvester are also fixedly provided inside the shell, the data plug is connected to the single-chip microcomputer, the piezoelectric energy harvester is connected to a supercapacitor fixedly provided inside the shell, and the supercapacitor is connected to the single-chip microcomputer.

[0007] A further technical solution is that the shell is a cylindrical structure, including a first shell and a second shell, the first shell is a circular ring structure with openings at both ends, including an inner ring and an outer ring fixedly connected, a plurality of snap fasteners are arranged at intervals on the top circumference of the inner ring, a first rectangular block is fixedly arranged on the snap fastener, the second shell is a cylindrical structure with an opening on one side, a connecting piece is embedded in the open side of the second shell, a protrusion is formed on the outer periphery of the connecting piece, the first shell is sleeved on the outside of the connecting piece on the open side of the second shell, the first rectangular block is stopped by the protrusion, the first shell is connected to the second shell, and the first shell rotates along the outer periphery of the connecting piece.

[0008] According to a further technical solution, the inner ring is placed inside the outer ring and is fixedly connected to the inner side of the outer ring at a certain distance.

[0009] According to a further technical solution, a second rectangular block is fixedly provided on the inner side of the inner ring, and a limiting member is fixedly provided on the inner side of the second rectangular block.

[0010] According to a further technical solution, a cover is spirally provided on a side of the first shell away from the second shell.

[0011] According to a further technical solution, a fixing piece is fixedly provided on one side of the cover, and a hook is inserted into the fixing piece.

[0012] According to a further technical solution, one end of the hook is inserted and fixed on the fixing member, and the other end is fixedly arranged on the outer wall of the second shell on the same side.

[0013] According to a further technical solution, the bottom of the data plug is embedded in a connector, a through hole is provided on the connector, and the bottom of the data plug passes through the through hole to connect with the single chip microcomputer inside the second shell.

[0014] According to a further technical solution, the data plug is a serial communication interface, and its bottom is connected to the single chip microcomputer via a pin header.

[0015] According to a further technical solution, the output contact of the piezoelectric energy harvester is connected to the supercapacitor via an electric wire.

[0016] Beneficial effects of the utility model:

[0017] The data acquisition device of the present invention is provided with a ring-shaped indicator light on the outer periphery of the shell. Compared with a small light bulb fixed at a side of the device, the working status displayed by the indicator light can be clearly seen regardless of the fixed angle when the device is running, so that the user can clearly see the status of the indicator light at most working angles.

[0018] The utility model provides a hook on the device housing, which allows the device to be hung on the cable storage box of a refrigerated container or other suitable hanging point when not in use. One end of the hook is fixed to the lid, and the other end is fixed to the outer wall of the second housing. When in use, the lid can be directly hung on the second housing, preventing the lid from being lost or dropped.

[0019] The utility model sets a piezoelectric energy harvester inside the device, which does not require an external power supply. The vibration energy of the refrigerated box can be directly converted into electrical energy through the piezoelectric energy harvester, reducing the operating cost and energy consumption of the equipment. It only needs to obtain electricity from the refrigerated container data download port to meet the data collection needs.

[0020] The utility model only needs to connect the data plug with the container data download port for installation, which is simple and convenient and solves the problem of complex installation of existing data acquisition equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0022] Figure 1 This is the overall structural diagram of the data acquisition device of the utility model;

[0023] Figure 2 This is a schematic diagram of the appearance and structure of the data acquisition device of the utility model;

[0024] Figure 3 This is a schematic diagram of the separation structure of the cover and shell of the data acquisition device of the utility model;

[0025] Figure 4 This is a structural cross-sectional view of the data acquisition device of the utility model;

[0026] Figure 5 This is a schematic diagram of the first housing structure of the data acquisition device of the utility model;

[0027] Figure 6 This is a schematic diagram of the connection structure between the data plug and the second shell of the data acquisition device of the utility model.

[0028] Among them, 1-first shell, 101-inner ring, 102-outer ring, 103-fastener, 104-first rectangular block, 105-second rectangular block, 106-limiting member, 2-second shell, 3-cover, 4-fixing member, 5-hook, 6-ring indicator light, 7-data plug, 8-piezoelectric energy harvester, 9-connecting member, 901-first connecting member, 902-second connecting member, 903-third connecting member, 904-blocking member. DETAILED DESCRIPTION

[0029] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figure 1 、 Figure 2 As shown, an embodiment of the present invention provides a refrigerated container data acquisition device, including a shell, a ring-shaped indicator light 6 is fixedly provided on the outer periphery of one side of the shell, the ring-shaped indicator light 6 is connected to a single-chip microcomputer fixedly arranged inside the shell, and a data plug 7 and a piezoelectric energy harvester 8 are also fixedly provided inside the shell, the data plug 7 is connected to the single-chip microcomputer, the piezoelectric energy harvester 8 is connected to a supercapacitor fixedly arranged inside the shell, and the supercapacitor is connected to the single-chip microcomputer.

[0031] In this embodiment, the shell is an overall cylindrical structure, including a first shell 1 and a second shell 2 .

[0032] like Figure 5 As shown, the first housing 1 is a circular structure with two open ends, comprising an inner ring 101 and an outer ring 102, which are fixedly connected. The inner ring 101 is placed inside the outer ring 102 and fixedly connected to the inner side of the outer ring 102 at a certain distance. A plurality of latches 103 are arranged at intervals around the top of the inner ring 101. Each latch 103 is fixedly provided with a first rectangular block 104 on the side facing the inside of the inner ring 101, which is used to buckle the first housing 1 onto the outside of the data plug 7, thereby achieving self-rotating fixation of the first housing 1. It should be noted that the height of the latches 103 at the top of the inner ring 101 is lower than or equal to the height of the top of the outer ring 102.

[0033] A second rectangular block 105 is fixedly mounted on the inner side of the inner ring 101. A stopper 106 is fixedly mounted below the inner side of the second rectangular block 105, limiting the rotation range of the first housing 1 and preventing it from rotating continuously. The first rectangular block 104 is not positioned inside the latch 103 above the second rectangular block 105. Although not shown in the accompanying drawings, multiple third rectangular blocks are spaced apart around the inner circumference of the inner ring 101. A matching structure exists on the data download port, requiring the two to be aligned.

[0034] In some embodiments, the latch 103 is a rectangular structure.

[0035] like Figure 2 、 3As shown, the second housing 2 is a cylindrical structure with an open side. Its interior is hollow and serves as a secure mounting for the various components. A ring-shaped indicator light 6 is fixed to the outer surface of the second housing 2, ensuring the user can clearly see the status of the indicator light in most operating positions (operating angles). The ring-shaped indicator light 6 is internally connected to a microcontroller (MCU), which controls the indicator light based on the operating status of the data acquisition device. The indicator light indicates the device status, such as a green light when the device is connected to power and a flashing green light when data is being transmitted. This can be flexibly configured to suit the specific situation.

[0036] A cover 3 is spirally provided on one side of the first shell 1 away from the second shell 2 to protect the internal structure of the first shell 1. A fixing part 4 is fixed on one side of the cover 3, and a hook 5 is inserted into the fixing part 4. One end of the hook 5 is inserted and fixed on the fixing part 4, and the other end is fixed on the outer wall of the second shell 2 on the same side. The portable hook 5 is linear, and when the data acquisition device is not in use, the user can hang the data acquisition device on the cable storage box of the refrigerated container or other suitable hanging points. Figure 3 As shown, during the use of the data acquisition device, the cover 3 is unscrewed, one end of the hook 5 is still fixed on the fixing part 4 of the cover 3, and the other end is fixed on the outer wall of the second shell 2, so that the cover 3 is hung on the second shell 2, which can prevent the cover 3 from falling or being lost.

[0037] In this embodiment, if Figure 6 As shown, the bottom of the data plug 7 is embedded in the connector 9, which is embedded in the interior of the opening of the second housing 2 and connected to the microcontroller fixed inside the second housing 2. Specifically, the connector 9 includes a first connector 901, a second connector 902, and a third connector 903, which are connected in sequence. The first connector 901, the second connector 902, and the third connector 903 have through-holes that match the data plug 7. The bottom of the data plug 7 passes through the through-holes in the first connector 901, the second connector 902, and the third connector 903. The bottom of the third connector 903 is embedded in the interior of the second housing 2 and connected to the microcontroller inside the housing. In other words, the opening of the second housing 2 is fixedly connected to the third connector 903.

[0038] The data plug 7 is a serial communication interface. The bottom of the data plug 7 is connected to the single-chip microcomputer fixed inside the second housing 2 through a pin header to transmit the data acquired by the data plug 7 to the single-chip microcomputer.

[0039] A stopper 904 is fixedly provided on the top of one side of the second connecting member 902, which cooperates with the limiting member 106 provided on the inner side of the first shell 1 to limit the rotation range of the first shell 1. Figure 6As shown, the diameter of the first connecting member 901 is smaller than that of the third connecting member 903, and the diameter of the third connecting member 903 is smaller than that of the second connecting member 902. In other words, a protrusion is formed on the outer periphery of the second connecting member 902, and the second connecting member 902 protrudes from the first connecting member 901 and the third connecting member 903 on both sides.

[0040] In some embodiments, the first connecting member 901, the second connecting member 902, and the third connecting member 903 are all cylindrical structures. The blocking member 904 is a rectangular structure.

[0041] like Figure 3 、 Figure 5 、 Figure 6 As shown, the first shell 1 is sleeved onto the exterior of the connector 9. The latch 103 of the inner ring 101 of the first shell 1 surrounds the outer periphery of the third connector 903. The first rectangular block 104 on the latch 103 is stopped by the protrusion of the second connector 902. The first shell is connected to the second shell, thus achieving the connection between the first and second shells. In other words, the protrusion on the connector blocks the first rectangular block, preventing the first shell 1 from falling off. The first shell 1 can rotate along the outer periphery of the connector 9. In other words, the first shell 1 can rotate around the connector 9 and the data plug 7, facilitating alignment of the third rectangular block inside the inner ring 101 of the first shell 1 with the corresponding adapter structure of the refrigerated container data download port. After the first shell 1 rotates within a certain range, the stopper 904 abuts the limiter 106, preventing further rotation and preventing the first shell 1 from rotating continuously.

[0042] It should be noted that Figure 5 The structure of the bottom side of the first shell 1 is shown in FIG. Figure 5 In the structure shown, the first housing 1 is upside down on the outside of the connecting member 9 .

[0043] In some embodiments, the data plug 7 uses an interface type selected from RS-232, RS-422, and RS-485.

[0044] Through the above technical solution, the first shell 1 can realize self-rotation and can be flexibly aligned with the data download port in the refrigerated container as needed to adapt to different installation environments.

[0045] In this embodiment, the second housing 2 is secured, in order from the opening to the sealed side, with a mainboard, a signal antenna, and a piezoelectric energy harvester 8. The mainboard is a printed circuit board (PCB), which serves as the carrier for the corresponding components. The PCB integrates a single-chip microcomputer, a supercapacitor, a storage module, and a wireless communication module. The MCU is connected to the supercapacitor, storage module, and wireless communication module, respectively. The signal antenna is connected to the MCU, and the piezoelectric energy harvester 8 is connected to the supercapacitor. The fixed positions of the mainboard, signal antenna, and piezoelectric energy harvester 8 can be flexibly set and are not specifically limited in this embodiment.

[0046] A piezoelectric energy harvester 8 is fixedly mounted within the sealed side of the second housing 2. Both sides of the piezoelectric energy harvester 8 are connected to the inner wall of the second housing 2 via springs. The springs primarily convert mechanical vibration energy into electrical energy. This conversion process relies on the spring's elastic properties, achieved through compression and expansion. The springs also provide vibration damping and isolation, protecting the device by reducing the dynamic loads transmitted to the housing.

[0047] The output contacts of the piezoelectric energy harvester 8 are connected to the supercapacitor via wires, storing the electricity in the supercapacitor on the mainboard. The piezoelectric energy harvester 8 uses existing components, which convert vibrations into electrical energy through Faraday's law of magnetic field induction to provide power for the data acquisition device. The data acquisition device of this embodiment does not require an external power supply, but directly converts the vibration energy of the refrigerator into electrical energy through the piezoelectric energy harvester 8, which simplifies the use of the device and improves the convenience of installation. It should be noted that when the power converted by the piezoelectric energy harvester 8 is insufficient, the data acquisition device can obtain power supply through the container data download port.

[0048] Furthermore, a supercapacitor is connected to the microcontroller to power it and ensure its normal operation. The microcontroller uses its internal power management circuit to distribute and control power to the data plug, wireless communication module, storage module, and ring indicator light, providing the necessary power for these modules. The microcontroller, a HC32L110 series microcontroller, includes a power management circuit. Its power supply for multiple modules is prior art and does not involve software improvements.

[0049] In some embodiments, the piezoelectric energy harvester 8 is secured using a mounting method such as gluing, bolting, or a magnetic mount. In some embodiments, the piezoelectric energy harvester can utilize a SMART MATERIAL MFC P2 piezoelectric ceramic sheet or a Z-type piezoelectric vibration energy harvester. This is not specifically limited in this embodiment.

[0050] The wireless communication module includes LoRa, Zigbee, Bluetooth, and other technologies, transmitting data via a signal antenna. The storage module can store acquired data and is used to temporarily store data when the piezoelectric energy harvester 8 is unstable and the power supply is unstable. The supercapacitor is used to receive the electrical energy converted by the piezoelectric energy harvester 8 and, when it exceeds a preset threshold, to power the data acquisition device.

[0051] The data collection device of this embodiment is widely applicable and can collect refrigerated container data from four major manufacturers: TK, Carrier, Star Cool, and DK.

[0052] It should be noted that the data plug 7, mainboard, signal antenna, piezoelectric energy harvester 8, and indicator light in this embodiment are all implemented using existing components. The microcontroller, supercapacitor, wireless communication module, and storage module integrated on the mainboard are also implemented using existing components. The data transmission method adopts the existing transmission method and does not involve any improvements to the software program.

[0053] Working principle detailed description:

[0054] The piezoelectric energy harvester 8 will charge the supercapacitor integrated on the mainboard as long as there is vibration.

[0055] During use, the lid 3 is opened, and the data plug 7 of the data acquisition device is connected to the data download port of the refrigerated container. When the data plug 7 is inserted into the data download port, the data download port will have electricity charging the supercapacitor through the data socket. The piezoelectric energy harvester 8 continuously converts the vibration energy of the refrigerated container into electrical energy and transmits it to the supercapacitor on the mainboard for storage. The single-chip microcomputer monitors the voltage of the supercapacitor. When it reaches a preset threshold, the single-chip microcomputer communicates with the refrigerated container through RS232 communication via the data download port, obtains the corresponding data (such as temperature, humidity, etc.) from the refrigerated container, completes data acquisition, and stores it in the storage module. When the voltage of the supercapacitor reaches the set threshold, the acquired data is transmitted to the receiver through the wireless communication module, and the transmission power is increased by the antenna gain.

[0056] During the data acquisition process, the single chip microcomputer controls the ring indicator light according to the working status of the data acquisition device, and the ring indicator light displays the corresponding status of the device.

[0057] When not in use, users can hang the data acquisition device on the cable storage box of the refrigerated container or other suitable hanging points using a hook.

[0058] Although the above description of the specific implementation methods of the present invention is combined with the accompanying drawings, it does not limit the scope of protection of the present invention. Technical personnel in the relevant field should understand that on the basis of the technical solution of the present invention, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the present invention.

Claims

1. A refrigerated container data acquisition device, characterized by: The device comprises a housing, an annular indicator light fixedly provided on an outer periphery of one side of the housing, the annular indicator light being connected to a single-chip microcomputer fixedly provided inside the housing, a data plug and a piezoelectric energy harvester being fixedly provided inside the housing, the data plug being connected to the single-chip microcomputer, the piezoelectric energy harvester being connected to a supercapacitor fixedly provided inside the housing, and the supercapacitor being connected to the single-chip microcomputer; The shell is a cylindrical structure, including a first shell and a second shell. The first shell is a circular ring structure with openings at both ends, including an inner ring and an outer ring fixedly connected. A plurality of snap fasteners are arranged at intervals on the top circumference of the inner ring, and a first rectangular block is fixedly arranged on the snap fastener. The second shell is a cylindrical structure with an opening on one side. A connecting piece is embedded in the open side of the second shell, and a protrusion is formed on the outer periphery of the connecting piece. The first shell is sleeved on the outside of the connecting piece on the open side of the second shell, and the first rectangular block is stopped by the protrusion. The first shell is connected to the second shell, and the first shell rotates along the outer periphery of the connecting piece.

2. The refrigerated container data acquisition device according to claim 1, characterized in that: The inner ring is placed inside the outer ring and is fixedly connected to the inner side of the outer ring at a certain distance.

3. The refrigerated container data acquisition device according to claim 1, characterized in that: A second rectangular block is fixedly provided on the inner side of the inner ring, and a limiting member is fixedly provided on the inner side of the second rectangular block.

4. The refrigerated container data acquisition device according to claim 1, characterized in that: A cover is spirally provided on one side of the first shell away from the second shell.

5. The refrigerated container data acquisition device according to claim 4, characterized in that: A fixing piece is fixedly provided on one side of the cover, and a hook is inserted into the fixing piece.

6. The refrigerated container data acquisition device according to claim 5, characterized in that: One end of the hook is inserted and fixed on the fixing piece, and the other end is fixedly arranged on the outer wall of the second shell on the same side.

7. The refrigerated container data acquisition device according to claim 1, characterized in that: The bottom of the data plug is embedded in the connecting piece, and a through hole is provided on the connecting piece. The bottom of the data plug passes through the through hole and is connected to the single chip computer inside the second shell.

8. The refrigerated container data acquisition device according to claim 7, characterized in that: The data plug is a serial communication interface, and its bottom is connected to the single chip microcomputer through a pin header.

9. The refrigerated container data acquisition device according to claim 1, characterized in that: The output contact of the piezoelectric energy harvester is connected to the supercapacitor through an electric wire.

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