A container crane weight sensor junction box

Abstract

This utility model discloses a container loading and unloading bridge weight sensor junction box, enabling wiring between the weight sensor and the electrical control box. The box includes a housing; a main control board with an intelligent main control module is installed inside the housing; a temperature sensor and a humidity sensor, controlled by the main control module, collect temperature and humidity data within the housing; and a wireless communication module controlled by the main control module. An external terminal with a display is installed outside the housing, communicating wirelessly with the main control module and receiving temperature and humidity data from the main control module, which is then displayed on the screen. In this utility model, because the temperature sensor and humidity sensor are installed inside the junction box to detect the internal temperature and humidity, and the external terminal with a display shows the internal temperature and humidity, the internal conditions of the housing can be understood without opening the box.

Description

Technical Field

[0001] This utility model relates to a junction box for a weight sensor on a container loading and unloading bridge. Background Technology

[0002] STM32 development boards are a series of embedded microcontrollers based on the ARM Cortex-M processor architecture manufactured by STMicroelectronics. The STM32 series development boards provide embedded system designers with rich peripherals and powerful processing capabilities, allowing for the connection of various detection modules. They are widely used in industrial automation, medical equipment, consumer electronics, communication equipment, and other fields.

[0003] The weight sensors on the container crane are crucial components for the overall safety protection of the machine. The condition of the weight sensor wiring directly affects the stability of the equipment. Damaged cables or water ingress into the junction boxes will affect the accuracy of the weighing system, necessitating a shutdown for repair. Two teams of multiple people participated in the inspection: one team monitored the data on the PLC side of the crane using a computer, while the other team checked the weight sensor nodes (junction boxes). Due to the influence of weather and temperature differences, some junction boxes may have moisture or water ingress. Often, the priority is to disassemble the junction boxes to check the tightness of the wiring and the extent of water ingress. The main drawback of this method is that disassembling the junction boxes consumes more than half of the repair time. Another drawback is the lag in checking the wiring only after a fault occurs; it requires multiple people and a long time for emergency repairs, and this outdated method must be improved. Utility Model Content

[0004] The purpose of this invention is to provide a container loading and unloading bridge weight sensor junction box that can determine whether water has entered or whether there is electricity without opening the box for outdoor, low-voltage communication and data cables with nodes.

[0005] The technical solution adopted by this utility model is as follows: a container loading and unloading bridge weight sensor wiring box, which realizes the wiring between the weight sensor and the electrical control box, including a box body; a main control board is set inside the box body, and an intelligent main control module is set on the main control board; a temperature sensor and a humidity sensor controlled by the main control module to collect the temperature and humidity inside the box body, and a wireless communication module controlled by the main control module are also set inside the box body; an external terminal with a display is also set outside the box body, and the external terminal wirelessly communicates with the main control module, receiving the temperature and humidity data inside the box sent by the main control module and displaying it on the display.

[0006] Furthermore, in the aforementioned container loading and unloading bridge weight sensor junction box: a voltage detection module and a storage module are also provided on the main control board; the main control module reads the voltage data collected by the voltage detection module and stores it in the storage module.

[0007] Furthermore, in the aforementioned container loading and unloading bridge weight sensor junction box: the main control module collects temperature and humidity data and stores them in the storage module.

[0008] Furthermore, in the aforementioned container loading and unloading bridge weight sensor junction box: the box body includes an upper cover plate and a lower box body, with the upper cover plate sealingly covering the lower box body; the inlet and outlet wires and the WiFi antenna holes of the junction box use waterproof connectors.

[0009] In this invention, since a temperature sensor is installed inside the junction box to detect the internal temperature and humidity, and an external terminal with a display is installed outside the box to display the internal temperature and humidity, the condition inside the box can be understood without opening the box.

[0010] The present invention will be described in more detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0011] Appendix Figure 1 This is a schematic diagram of the junction box of this utility model;

[0012] Appendix Figure 2 This is a block diagram of the main control board of this utility model;

[0013] Appendix Figure 3 This is a schematic diagram of the upper cover plate of the junction box in an embodiment of this utility model;

[0014] Appendix Figure 4 This is a schematic diagram of the lower part of the junction box of this utility model;

[0015] Appendix Figure 5 This is a schematic diagram (a) of the external terminal interface of this utility model;

[0016] Appendix Figure 6 This is a schematic diagram (II) of the external terminal interface of this utility model. Detailed Implementation

[0017] This embodiment is a container crane weight sensor junction box with temperature, humidity, and voltage detection capabilities, consisting of an upper cover body and a lower box body. Figure 1 As shown.

[0018] In this embodiment, a container loading and unloading bridge weight sensor junction box is provided to realize the wiring between the weight sensor and the electrical control box. The box includes a housing; a main control board 2 is installed inside the housing, and an intelligent main control module is installed on the main control board 2; the structural block diagram of the main control board 2 is shown below. Figure 2 As shown.

[0019] The enclosure is also equipped with a temperature sensor and a humidity sensor, both controlled by the main control module, which collect data on the temperature and humidity inside the enclosure, as well as a wireless communication module controlled by the main control module.

[0020] An external terminal with a display is also installed outside the enclosure. The external terminal communicates wirelessly with the main control module and receives temperature and humidity data inside the enclosure sent by the main control module, which is then displayed on the display.

[0021] This embodiment addresses several drawbacks of existing traditional weight sensor junction boxes, such as: the need to disassemble the junction box to determine if water has entered, uncertain sealing effectiveness after sealing, potential corrosion of the box if water ingress is not detected promptly, and damage to the weight sensor if water ingress is not detected promptly. It also fails to quantify, display, and record the internal temperature, humidity, and voltage of the wiring after the junction box is closed and powered on. By using the new junction box of this embodiment, a peripheral terminal can connect via WiFi to understand the internal temperature, humidity, and voltage of the junction box through data exchange. Historical temperature, humidity, and voltage data can be exported through file management, allowing for assessment of the internal condition of the junction box under different weather conditions and times. This provides a basis for the maintenance and troubleshooting of the weight sensor system, reduces unnecessary junction box disassembly and assembly, and improves maintenance efficiency. The interface of the external terminal is as follows: Figure 5 As shown; in fact, data can also be retrieved on an external terminal, as shown in the interface. Figure 6 As shown. Here, the external terminal is a terminal set outside the junction box. It is generally a handheld terminal, often a mobile phone. An app is installed on the phone, and it uses wireless communication modules such as Bluetooth or WIFI to communicate with the wireless communication module inside the junction box, receiving parameters such as temperature, humidity, and voltage, and displaying them on the phone screen.

[0022] In this embodiment, a main control board is located in the middle of the enclosure. This board processes data from the detection module, performs calculations, stores data, and transmits data to an external handheld terminal. The upper right side of the upper cover 1 houses the main control board's power interface, which can accept power supplies of different voltage levels. The lower right side of the upper cover 1 contains a WiFi module for connecting to the handheld terminal and transmitting data. The upper left side of the upper cover 1 contains a voltage detection module to detect the voltage of the power interface. The lower left side of the upper cover 1 contains a temperature and humidity detection module to detect the temperature and humidity inside the junction box. The power interface is adaptive to 0-24V AC / DC power. If the power interface suddenly loses power during detection, the main control board uses a button battery to ensure the system can operate for one hour to continue data detection and recording. After the main device on the upper cover connects to the handheld terminal via WiFi, it displays a real-time screen and data viewing / export screen. Once the main device is connected to the handheld terminal, real-time voltage, temperature, and humidity data can be viewed. Once the main device and the handheld terminal are connected, tap to view data, and the screen will display all historical records. Double-tap to open a table to view the data, press and hold for 3 seconds to select the table, tap to select all tables, and tap to export to export the required data to the selected location on the handheld terminal.

[0023] The main body of the lower enclosure 8 is an open-top rectangular enclosure with external dimensions of approximately 200mm × 150mm × 150mm. There is a guide rail in the center of the bottom of the main body of the lower enclosure 8 for installing terminal blocks. The left side of the main body of the lower enclosure is a 150mm × 150mm square side plate, and the right side of the main body of the lower enclosure is a 150mm × 150mm square side plate.

[0024] In this embodiment, the hardware mainly consists of the upper cover plate 1 and the lower housing 8, while the software mainly consists of a human-machine interface connected via WiFi, which can read, write and manage the data files of the main control board.

[0025] The main control board 2 is installed on the upper cover plate 1. The main control board 2 is as follows: Figure 3 As shown, terminal 5 on the top is used to power the main control board 2 and also serves as the detection object of the voltage detection module 3. The main control board 2 reads the signal from the voltage detection module 3 according to the program instructions and stores the detected voltage value at 1 second / time. The main control board 2 reads the signal from the temperature and humidity detection module 4, which is the temperature sensor and humidity sensor, according to the program instructions and stores the detected temperature and humidity values ​​at 1 second / time. The WiFi module 6 and WiFi module antenna 7 are installed on the other side of the main control board 2, facing the terminal 10 on the bottom of the box.

[0026] The interior of the lower box 8 is as follows Figure 4As shown, there is a guide rail 9 at the bottom, and the terminal block 10 is mounted on the guide rail 9. There are 8 wiring screws on one side of the terminal block 10. Four of them are connected to the DC24V, DCOV, signal +, and signal - of the weight sensor, respectively, and the remaining four wiring screws are spares. There are also 8 wiring screws on the other side of the terminal block 10. The two screws corresponding to the DC24V and DCOV of the weight sensor are connected to the power + and power - of the 24V power module of the container loading and unloading bridge, respectively. The signal + and signal - are connected to the signal A+ and signal A- in the analog quantity module of the container loading and unloading bridge PLC, respectively. The remaining 4 wiring screws are spares.

[0027] Power interface 5 can be connected to AC / DC power supplies of different levels, 12-24V. The main control board 2 reads data from the voltage detection module 3 and the temperature and humidity detection module 4 in real time, and can display the voltage, temperature and humidity values ​​in real time through the human-machine interface via the WiFi module. In addition, the voltage, temperature and humidity values ​​are stored every second. The main control board 2 is equipped with 64G of storage space to ensure that it can store 180 days of historical data.

[0028] The lower enclosure has 8 rows of terminal blocks mounted on guide rails. Up to 8 incoming cables can be connected to the left side, and up to 8 outgoing cables can be connected to the right side. A hole (8-1) is located at the bottom of the left 150mm x 150mm side for the incoming cable, secured and sealed with a waterproof connector. Two holes are located at the bottom of the right 150mm x 150mm side: one for the outgoing cable (8-2), also secured and sealed with a waterproof connector; the other for the WiFi antenna (8-3), secured and sealed with a waterproof connector.

[0029] The purpose of this invention is to convert the internal conditions of concealed engineering projects into digital information. During the inspection and emergency repair of container loading and unloading bridges, the humidity and power information inside the junction box can be read using mobile phones and other terminals, eliminating the need for blindly disassembling and assembling the junction box, thus saving manpower. It can also collect and export historical data on humidity and voltage inside the junction box, and analyze the data to better guide future junction box sealing and inspection work.

[0030] The upper cover plate main body device of this embodiment is used in conjunction with the lower box body to detect the temperature, humidity and voltage inside the box. The usage steps and principle of the container loading and unloading bridge weight sensor junction box with automatic temperature, humidity and voltage detection are as follows: refer to the following description.

[0031] 1. Install the lower box body 8 near the weight sensor of the main beam adjustment platform of the container loading and unloading bridge.

[0032] 2. The weight sensor cable from the electrical control cabinet enters the lower cabinet through the inlet hole; DC24V is connected to terminal 1 of terminal 10, DC24V is connected to terminal 2 of terminal 10, signal+ is connected to terminal 3 of terminal 10, and signal- is connected to terminal 4 of terminal 10.

[0033] 3. The weight sensor wire enters the housing through the wire outlet hole in the lower housing. DC24V is connected to terminal 1 of terminal 10, DC24V is connected to terminal 2 of terminal 10, signal+ is connected to terminal 3 of terminal 10, and signal- is connected to terminal 4 of terminal 10.

[0034] 4. The + terminal of the upper cover power interface is connected to terminal 10, and the - terminal of the upper cover power interface is connected to terminal 2 of the upper cover power interface.

[0035] 5. The WiFi antenna passes through the WiFi antenna hole in the lower housing and connects to the WiFi-specific screw hole on the B side of the main control board.

[0036] 6. When the 24V power switch of the front beam adjustment platform electrical control cabinet is turned on, the buzzer on the main control board will sound once, indicating that the program has started running after power-on.

[0037] 7. Turn on your phone's Wi-Fi, search for nearby signals, connect to YICT, enter the password 20240618, and wait for the connection to complete.

[0038] 8. A message will be displayed after a successful connection. Figure 3 Real-time information screen.

[0039] 9. Apply adhesive to the contact surfaces between the upper cover and the lower housing, and tighten the four connecting screws.

[0040] 10. After personnel evacuation, hand over the equipment to the operations department for use, regularly check real-time data, connect the junction box to monitor internal voltage, temperature and humidity, regularly export data, and analyze the sealing effect of the previous sealing operation.

Claims

1. A container crane weight sensor junction box, for connecting the weight sensor to the electrical control box, comprising a box body; characterized in that: A main control board (2) is provided inside the box, and an intelligent main control module is provided on the main control board (2); The enclosure is also equipped with a temperature sensor and a humidity sensor that are controlled by the main control module to collect the temperature and humidity inside the enclosure, and a wireless communication module controlled by the main control module. An external terminal with a display is also installed outside the enclosure. The external terminal communicates wirelessly with the main control module and receives temperature and humidity data inside the enclosure sent by the main control module, which is then displayed on the display.

2. The container loading and unloading bridge weight sensor junction box according to claim 1, characterized in that: The main control board (2) is also equipped with a voltage detection module (3) and a storage module; the main control module reads the voltage data collected by the voltage detection module (3) and stores it in the storage module.

3. The container loading and unloading bridge weight sensor junction box according to claim 2, characterized in that: The main control module collects temperature and humidity data and stores it in the storage module.

4. The container loading and unloading bridge weight sensor junction box according to claim 3, characterized in that: The wireless communication module is a WiFi module.

5. The container loading and unloading bridge weight sensor junction box according to claim 4, characterized in that: The enclosure includes an upper cover plate (1) and a lower enclosure (8). The upper cover plate (1) seals over the lower enclosure (8). The lower enclosure (8) has an inlet cable hole (8-1) on the bottom left side for the inlet cable to pass through, and an outlet cable hole (8-2) and a WiFi antenna hole (8-3) on the bottom left side. The inlet cable hole (8-1), outlet cable hole (8-2), and WiFi antenna hole (8-3) are all fixed and sealed with waterproof connectors.

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