KR-20260063801-A - LOGISTICS MANAGING SYSTEM

Abstract

One embodiment of the present invention may provide a logistics control system comprising: a sensor device attached to an outdoor pallet to detect whether the pallet is loaded or unloaded and to transmit a preset call signal; a GPS receiver mounted on a forklift to receive location information of the forklift; a wireless communication unit mounted on the forklift to receive the call signal of the sensor device and to transmit GPS information when the pallet is loaded and GPS information when the pallet is unloaded to a server; and a server that determines the real-time location of the pallet based on information transmitted from the wireless communication unit of the forklift.

Inventors

• 김우생

Assignees

• 동아대학교 산학협력단

Dates

Publication Date

20260507

Application Date

20241031

Claims (6)

1. A sensor device attached to an outdoor pallet to detect whether the pallet is being loaded or unloaded and to transmit a preset call signal; A GPS receiver mounted on a forklift to receive location information of the forklift; A wireless communication unit mounted on the forklift, receiving a call signal from the sensor device and transmitting GPS information at the time of loading the pallet and GPS information at the time of unloading the pallet to a server; and A server that determines the real-time location of a pallet based on information transmitted from the wireless communication unit of the above-mentioned forklift A logistics control system including
2. In paragraph 1, The sensor device further includes a vibration sensor or an IMU sensor, and If no value is detected by the vibration sensor or IMU sensor for a preset period of time, the sensor device is switched to sleep mode to stop the transmission of the call signal, and When vibration is detected by the vibration sensor or tilt is detected by the IMU sensor, the sensor device is switched to active mode to start transmitting a call signal. A logistics control system characterized by the following.
3. In paragraph 1, A logistics control system characterized by the wireless communication unit measuring the strength of a call signal (RSSI, Received Signal Strength Indicator) received from the sensor device and correcting the position of the pallet based on the strength of the measured signal.
4. In paragraph 1, A logistics control system characterized by the above server analyzing real-time location data of a forklift and a pallet, applying an AI-based path optimization algorithm, and calculating the movement path of the forklift.
5. In paragraph 1, The above sensor device further includes a battery management system that reduces battery consumption using low-power communication technology, and A logistics control system characterized by the above-described battery management system optimizing battery usage when the sensor device switches from active mode to sleep mode.
6. In paragraph 1, The sensor device further includes a temperature sensor, a humidity sensor, and a barometric pressure sensor, and A logistics control system characterized by measuring the temperature, humidity, and atmospheric pressure of the environment where a pallet is located in real time and transmitting the data to a server.

Description

Logistics Management System The present invention relates to a logistics control system, and more specifically, to a logistics control system capable of determining the real-time location of a pallet by receiving location information of a forklift via a call signal from a sensor device mounted on a stacked pallet. This project (result) is the result of the Phase 3 Leading University Industry-Academic Cooperation Project (LINC 3.0), funded by the Ministry of Education and the National Research Foundation of Korea. Recently, due to the growth of the non-face-to-face industry, particularly the online shopping industry, product deliveries are increasing, and the importance of logistics management systems in logistics centers, which are the core of product delivery, is expanding. Prior Art: Korean Published Patent 10-2022-0089257 The prior art relates to a 'logistics management method and system,' and discloses that, in order to manage logistics within a pre-set area, the logistics management system acquires product information about a product through a camera, acquires location information of the product through an ultra-wide band (UWB) sensor, corrects it in real time, generates a movement path within the pre-set area based on the product location information and product information corrected by the UWB sensor, and transports the product within the pre-set area according to the movement path through a smart cart. FIG. 1 is a configuration diagram of a logistics control system according to an embodiment of the present invention. FIG. 2 is a configuration diagram of a sensor device in a logistics control system according to another embodiment of the present invention. FIG. 3 is a conceptual diagram of measuring location information of a forklift in a logistics control system according to another embodiment of the present invention. The present invention will be described in detail below with reference to the attached drawings. FIG. 1 is a configuration diagram of a logistics control system according to an embodiment of the present invention. Referring to FIG. 1, the logistics control system (100) according to the present embodiment may include a sensor device (110), a GPS receiver (120), a wireless communication unit (130), and a server (140). A sensor device (110) is attached to an outdoor pallet to detect whether the pallet is being loaded or unloaded and to transmit a call signal. In this embodiment, the sensor device (110) may include a vibration sensor and/or an IMU sensor (tilt sensor). When vibration is detected by the vibration sensor or a change in tilt is detected by the IMU sensor, the sensor device (110) may recognize that the pallet has been loaded onto the forklift. Additionally, if vibration is not detected by the vibration sensor for a certain period of time or a change in tilt is not detected by the IMU sensor, the sensor device (110) may recognize that the pallet has been unloaded from the forklift. The sensor device (110) may transmit a call signal to a wireless communication unit (130) mounted on the forklift. The call signal may include a command to cause the wireless communication unit (130) of the forklift to transmit GPS information regarding the current loading or unloading location of the pallet to a server. A GPS receiver (120) can be mounted on a forklift to receive location information of the forklift. The GPS receiver can receive time information and location information from GPS satellites to calculate the geographical location, such as the longitude, latitude, and altitude of the GPS receiver. This calculation can calculate the accurate location of the forklift using signals received from at least four satellites via triangulation. The GPS receiver can be mounted on the top of the forklift to obtain high-precision location data. The wireless communication unit (130) is mounted on the forklift and can receive a call signal from the sensor device (110) and transmit GPS information at the time of loading the pallet and GPS information at the time of unloading the pallet to the server (140). In this embodiment, the wireless communication unit (130) receives the call signal through low-power wireless communication technology such as BLE (Bluetooth), LoRa, or Wi-Fi, and can be designed to receive the signal stably even if the communication distance between the pallet and the forklift becomes long. The wireless communication unit (130) may include a signal processing module, and the signal processing module can analyze the strength of the call signal (RSSI, Received Signal Strength Indicator) to estimate the distance between the pallet and the forklift and identify the reason (loading, unloading, movement) that the call signal occurred. The signal processing module can remove unnecessary signals or noise to extract accurate data and prepare to transmit it to the server. In this embodiment, the wireless communication unit (130) can be linked with the GPS receiver (120) to transmit locatio