KR20230149273A - A System for Monitoring a Cooling Volume Temperature of a Refrigerating Vehicle Using a Wireless Communication - Google Patents

Abstract

The present invention relates to a temperature monitoring system for a refrigerated vehicle using multi-channel temperature detection using wireless communication. The temperature monitoring system for a refrigerated vehicle using multi-channel temperature detection includes a temperature data logger module 11 that acquires temperature information from at least one temperature sensor module 13_1 to 13_N disposed in the refrigerated space 12; a GPS module (14) that provides location information to the temperature data logger module (11); a communication module (15) enabling wireless communication between the temperature data logger module (11) and the monitoring server (16); And an operation information module 17 that acquires information about the operating means for operating the refrigeration space 12, and the temperature data logger module 11 provides location information of the refrigeration space 12 to the monitoring server 16. And temperature information is transmitted, and information according to the monitoring results transmitted from the monitoring server 16 is transmitted to the operating means.

Description

Temperature monitoring system for refrigerated vehicles using multi-channel temperature detection using wireless communication {A System for Monitoring a Cooling Volume Temperature of a Refrigerating Vehicle Using a Wireless Communication}

The present invention relates to a temperature monitoring system for a refrigerated vehicle using multi-channel temperature detection using wireless communication, and specifically, a multi-channel temperature monitoring system using wireless communication in which the temperature state of the refrigerated space of a refrigerated truck can be controlled by wireless communication. It relates to a temperature monitoring system for refrigerated vehicles by channel temperature detection.

The refrigeration system for refrigerated logistics vehicles functions to maintain an appropriate temperature during the movement of vegetables, meat, medicine, fish, or similar logistics where temperature control is important. Such a refrigeration system needs to be designed so that energy consumption is minimized while the refrigeration space is maintained within a set temperature range during the logistics movement process. Known refrigerated vehicles use a management system using a temperature recorder that stores and prints the temperature of the refrigerated vehicle. This refrigerated vehicle temperature management system has the disadvantage that it is difficult to manage or monitor the refrigerated vehicle in a smart way online or in real time. Patent Publication No. 10-2008-0082699 discloses a temperature and tachometer recording device for refrigerated/frozen vehicles. Additionally, Patent Registration No. 10-1250307 discloses a vehicle freezer controller with temperature record storage and output functions. With such prior art or known technology, it is difficult to monitor the status of the refrigerated space in the refrigerated vehicle in real time. It also has the disadvantage that it is impossible to monitor the frozen state of multiple refrigerated vehicles. Therefore, for smart logistics monitoring of large-scale refrigerated vehicles, a data logger that stores the temperature and current location data of various channels about the refrigerated space of the vehicle and transmits it to the server using wireless communication (LTE, 3G), and thus provides real-time There is a need to develop a system capable of controlling the frozen state of multiple refrigerated vehicles.

The present invention is intended to solve the problems of the prior art and has the following purposes.

Patent Document 1: Patent Publication No. 10-2008-00825699 (Shinheung Control Co., Ltd., published on September 12, 2008) Temperature and tachometer recording device for refrigerated/frozen vehicles Patent Document 2: Patent Registration No. 10-1250307 (Dongin Thermo Co., Ltd., announced on April 3, 2013) Vehicle freezer controller with temperature recording device and output function

The purpose of the present invention is to obtain real-time location information of the refrigerated vehicle using a GPS module and obtain temperature information of the refrigerated space through multiple channels to control the refrigerated state through wireless communication. To provide a temperature monitoring system for refrigerated vehicles.

According to a preferred embodiment of the present invention, a monitoring system for a refrigerated vehicle using multi-channel temperature detection includes a temperature data logger module that acquires temperature information from at least one temperature sensor module disposed in the refrigerated space; a GPS module that provides location information to the temperature data logger module; A communication module enabling wireless communication between the temperature data logger module and the monitoring server; And an operation information module that acquires information about the operating means for operating the refrigerated space, and the temperature data logger module transmits the location information and temperature information of the refrigerated space to the monitoring server, and records the monitoring results transmitted from the monitoring server. The following information is transmitted to the operating means.

According to another suitable embodiment of the present invention, the temperature data logger module includes an operation selection module for operation of the temperature sensor module; Communication means for communicating with the temperature sensor module; and storage means.

According to another suitable embodiment of the present invention, the temperature sensor module is operated independently by a trigger, and the temperature information obtained from the temperature sensor module is combined with the detection position and detection time information by a position-time unit to provide a data processing unit. is transmitted to

The temperature monitoring system of a refrigerated vehicle using multi-channel temperature detection according to the present invention can display channel temperature, current location, or various data related to refrigeration in the refrigerated space of the refrigerated vehicle by applying a large TFT graphic LCD display element of 2 inches or more. At the same time, it makes a user interface possible. With this structure, the temperature sensor can be expanded from 4 channels to a maximum of 255 channels using serial communication (CAN), and can be applied to various refrigeration fields such as small to large refrigerated vehicles and refrigerated warehouses. The monitoring system according to the present invention is equipped with a wireless communication (LTE, 3G) or GPS module to enable transmission of log data to a management server. In addition, large amounts of data can be stored using SD cards, and data backup and data analysis can be performed using USB memory. The monitoring system according to the present invention improves the reliability of temperature control by having precision and linearity using an RTD PT type temperature sensor. In addition, the digital processing part is applied independently to each sensor, so data is transmitted via communication to the temperature detection unit, eliminating the need for calibration according to sensor length. Additionally, since it is transmitted using a serial communication signal system, temperature sensors of various channels can be created with a single cable structure.

Figure 1 shows an embodiment of a temperature monitoring system for a refrigerated vehicle using multi-channel temperature detection using wireless communication according to the present invention.
Figures 2a and 2b show an example of a temperature data logger module applied to the monitoring system according to the present invention.
Figure 3 shows an embodiment of the operating structure of the monitoring system according to the present invention.
Figure 4 shows an example of a structure in which temperature information is detected in the monitoring system according to the present invention.

Below, the present invention will be described in detail with reference to the embodiments shown in the attached drawings, but the examples are for a clear understanding of the present invention and the present invention is not limited thereto. In the description below, components having the same reference numerals in different drawings have similar functions, so unless necessary for understanding the invention, the description will not be repeated, and well-known components will be briefly described or omitted, but the present invention It should not be understood as being excluded from the embodiments.

Figure 1 shows an embodiment of a temperature monitoring system for a refrigerated vehicle using multi-channel temperature detection using wireless communication according to the present invention.

Referring to FIG. 1, the temperature monitoring system for a refrigerated vehicle using multi-channel temperature detection using wireless communication acquires temperature information from at least one temperature sensor module 13_1 to 13_N disposed in the refrigerated space 12. data logger module (11); a GPS module (14) that provides location information to the temperature data logger module (11); a communication module (15) enabling wireless communication between the temperature data logger module (11) and the monitoring server (16); And an operation information module 17 that acquires information about the operating means for operating the refrigeration space 12, and the temperature data logger module 11 provides location information of the refrigeration space 12 to the monitoring server 16. And temperature information is transmitted, and information according to the monitoring results transmitted from the monitoring server 16 is transmitted to the operating means.

The data logger module 11 is installed in a refrigerated vehicle, for example, and can be connected to the temperature sensor modules 13_1 to 13_N placed inside the refrigerated space 12 to enable data communication, for example, by CAN communication. there is. The data logger module 11 can be made independently and installed in a refrigerated vehicle, and can have a selectively movable electronic structure. The freezing space 12 can be used to control various types of vegetables, foodstuffs, fish, and meat while allowing control of internal temperature, humidity, or gas flow. This can be a storage space for medicines, chemicals, or similar temperature-affected items. The refrigerated space 12 may be a movable storage space, such as a truck installed in a refrigerated vehicle, or a fixed space in a designated location, such as a storage warehouse. The environmental conditions of the refrigeration space 12 can be adjusted by operating means, for example, a refrigeration system installed in a refrigerated vehicle or a similar refrigeration system capable of controlling the temperature, humidity or gas flow of the refrigeration space 12. It can be a system. Information about the operating state of the operating means can be obtained by the operating information module 17. The operation information module 17 can obtain information about the operation means as well as environmental information related to the operation means through various means. For example, the operating information module 17 may obtain environmental information related to the operating state of the engine of the refrigerated vehicle or the location of the refrigerated space 12. At least one temperature sensor module (13_1 to 13_N) may be installed in the refrigeration space 12, and each temperature sensor module (13_1 to 13_N) may be operated independently or in response to an operation command of the temperature data logger module 11. It can work accordingly. The temperature sensor modules 13_1 to 13_N and each temperature sensor module 13_1 to 13_N may be connected to enable data communication, and the temperature detection information acquired by each temperature sensor module 13_1 to 13_N may be stored in a temperature data logger. It can be transmitted to the module 11 and stored. The location information of the refrigerated space 12 can be detected by the GPS module 14, and the location information detected by the GPS module 14 can be transmitted to the temperature data logger module 11 and the communication module 15. there is. For example, location information of a refrigerated vehicle in the process of movement may be periodically transmitted to the monitoring server 16. Additionally, the location information of the refrigerated vehicle may be transmitted to the data logger module 11 periodically or upon request from the data logger module 11. The communication module 15 may be installed in the data logger module 11, or may be connected to the data logger module 11 and installed in various locations to enable the data logger module 11 to communicate with the monitoring server 16. The monitoring server 16 may have the function of monitoring the refrigeration state of at least one refrigeration space 12. The status of the refrigeration space 12 of a plurality of refrigeration vehicles can be monitored by the monitoring server 16. The monitoring server 16 may have information on the size of each refrigeration space 12 and the items stored in the refrigeration space 12 . In addition, the monitoring server 16 can confirm the location of each frozen space 12 by receiving the location of each frozen space 12 detected by the GPS module 14 through each communication module 15. . The communication module 15 may include means capable of LTE communication, 3G, 4G, 5G communication, or various similar wireless communications. Information about the operating means for controlling the refrigeration conditions of the refrigerating space 12 or a device related to the operating means may be detected by the operating information module 17 and transmitted to the data logger module 11. For example, the operating status of the refrigeration system of the refrigerated vehicle, operating information of the engine of the refrigerated vehicle, or similar information may be detected by the operating information module 17 and transmitted to the data logger module 11. The data logger module 11 may transmit the temperature information detected by each temperature sensor module 13_1 to 13_N and the location information of the refrigeration space 12 to the monitoring server 16. Optionally, the data logger module 11 may transmit information detected by the operational information module 17 to the monitoring server 16. And the monitoring server 16 can monitor the state of each refrigeration space 12 based on the temperature information and location information transmitted from the data logger module 11. The data logger module 11, GPS module 14 or communication module 15 may be connected to each other in various ways and are not limited to the presented embodiment.

Figures 2a and 2b show an example of a temperature data logger module applied to the monitoring system according to the present invention.

2A and 2B, the temperature data logger module 11 includes an operation selection module 22 for operation of the temperature sensor modules 13_1 to 13_N; Communication means (27) for communicating with the temperature sensor modules (13_1 to 13_N); and storage means (28). The data logger module 11 may be made independently and installed in a refrigerated vehicle, or may have a portable, mobile electronic device structure. The data logger module 11 can operate independently and may have GPS information receiving means or receive GPS information of the refrigerated vehicle from GPS information receiving means. Additionally, the data logger module 11 may have a wireless communication means or may be connected to a wireless communication means to wirelessly communicate with the monitoring server described above. The temperature information of the refrigerated space detected by the temperature sensor module 13 can be transmitted to the temperature data unit 26 and stored in a storage medium 28, such as an SD card, by the input/output processing unit 23. It can be. The entire operation of the data logger module 11 may be controlled by a control module 21, which may include a microprocessor and operating software, and may control the temperature sensor module via the detection setup unit 24. The operation of (13) can be controlled. The function of the temperature data logger module 11 can be selected and executed by the operation selection module 22. Operation selection module 22 may include various buttons or switches to enable functions of data logger module 11. A USB port 25 may be installed in the data logger module 11, and a USB may be connected through the USB port 25 so that temperature data stored in the storage medium 28 can be copied to the USB. Additionally, the operating software of the data logger module 11 can be updated through the USB port 25. The data logger module 11 is capable of data communication with a refrigerated vehicle or a temperature sensor module 13, and can communicate data with various devices or temperature sensor modules 13 installed in a refrigerated vehicle, for example, by CAN communication means 27. This is possible. The data logger module 11 may include a display unit 291 and a printer 292. The current temperature, humidity, or similar information of the refrigerated space may be displayed in real time on the display unit 291, and the printer 292 ) Temperature logger data can be output.

Referring to FIG. 2B, the temperature data logger module 11 may have an overall rectangular box shape, and various electronic devices or electronic components may be disposed inside the body BD in which a receiving space is formed. An operation selection module 22 with a plurality of operation buttons may be disposed on the front surface of the body BD. A display unit 291 that displays temperature information may be placed on the front side of the body BD, and a printer 292 may be placed on the upper part of the body BD. A plurality of temperature sensor modules 13_1 to 13_N may be disposed in the refrigeration space 12, and the plurality of temperature sensor modules 13_1 to 13_N detect temperatures at different locations in the refrigeration space 12 and use a serial communication method. It can be transmitted to the data logger module (11). Each temperature sensor module (13_1 to 13_N) may have a structure capable of operating independently, and its operating state may be adjusted by the data logger module 11. The data logger module 11 may have various structures and is not limited to the presented embodiment.

Figure 3 shows an embodiment of the operating structure of the monitoring system according to the present invention.

Referring to Figure 3, the data logger module may include a central processing unit 31, such as a microcomputer, and the operation of the central processing unit 31 may be controlled by the main board interface 34 connected to the function selection module. You can. Temperature information detected in the refrigerated space may be converted into an electrical signal and transmitted to the data processing unit 35 for processing. A power supply means such as a battery may be placed inside the data logger module, or vehicle power or other external power may be supplied to the data logger module. Power may be supplied to the data logger module from various types of power sources S, and is not limited to the presented embodiment. Power supplied to the data logger module may be supplied by the power control unit 32, and the power control unit 32 may have a protective function such as detection of leakage current while ensuring that a predetermined level of voltage is supplied to the data logger module. You can. Additionally, the operating state of the data logger module can be monitored by the operating state monitoring unit 33, for example, the connection state with the communication module, whether location information is received, or whether temperature data is received can be monitored. If this function is not activated, the operating status monitoring unit 33 can generate a warning signal. When temperature information is detected and transmitted to the data processing unit 35, it is compared with reference data stored in the reference data unit 36, and the comparison result may be transmitted to the transmission information generating unit 39. Location information may be transmitted from GPS module 14 to information processing unit 38. The information processing unit 38 may transmit the received location information to the location information data check unit 37 to check whether the time at which the location information and the temperature detection information were acquired match. The location information data check unit 37 may have a function of comparing the times of the received location information and the detected temperature information and matching them. In this way, temperature information with matching location information and time information can be transmitted to the data processing unit 35, compared with reference data, and transmitted to the transmission information generation unit 39. The transmission information generation unit 39 generates the unique code of the refrigerated vehicle, temperature detection information combining location information and visual information, and the difference between the detection temperature and the reference temperature as one data package and monitors it through the wireless communication module 15. It can be sent to the server. And the monitoring server can monitor the status of the refrigerated space in real time based on the received data package.

Figure 4 shows an example of a structure in which temperature information is detected in the monitoring system according to the present invention.

Referring to FIG. 4, the temperature sensor modules 13_1 to 13_N are independently operated by the trigger 42, and the temperature information obtained from the temperature sensor modules 13_1 to 13_N is detected by the position-time unit 45. It is combined with location and detection time information and transmitted to data processing unit 35. At least one temperature sensor module (13_1 to 13_N) may be installed in the refrigeration space, and for example, a plurality of temperature sensor modules (13_1 to 13_N) may be disposed at different positions in the refrigeration space. Each temperature sensor module 13 includes a base substrate 131 made of, for example, ceramic or a similar insulating material with low thermal conductivity; A temperature detection circuit 132 formed on one side of the base substrate 131; and a protective coating 133 to protect the temperature detection circuit 132. The temperature detection module 13 may have a 2-wire, 3-wire, or 4-wire structure, for example, but is not limited to an RTD (Resist Temperature Detector) Pt sensor structure. The temperature sensor module 13 may be electrically connected to the compensation/conversion unit 41 by cables 134a and 134b, and the power required for operation of the temperature sensor module 13 is supplied by the power circuit 43. It can be. The base substrate 131 may have a rectangular plate shape with a thin thickness, and the detection circuit 132 may be formed on one portion of one side of the base substrate 131. Additionally, the detection circuit 132 may be protectively coated with a thin film glass material or a similar material that has high thermal conductivity and insulating properties. And the detection value can be converted into an electrical signal and transmitted to the compensation/conversion unit 41 through the cables 134a and 134b. The compensation/conversion unit 41 may have the function of amplifying the transmitted detection signal and making necessary compensation according to humidity or detection conditions. The temperature sensor modules 13_1 to 13_N can periodically detect the temperature of the refrigerated space, and can detect the temperature of the refrigerated space at any time by the trigger 42. The trigger 42 may have a function of synchronizing the detection times of the temperature detection modules 13_1 to 13_N that operate independently from each other. Additionally, temperature information detected at different locations at the same time may be transmitted to the detection code unit 44 via the compensation/conversion unit 44. The detection code unit 44 may combine the detection location inside the refrigerated space with the corresponding detection temperature and detection time to assign a detection code and transmit it to the data processing unit 35. As described above, location information of the refrigerated space may be received by the GPS module, and the detection information assigned a detection code to the location-time unit 45 may be combined with the location information and stored in memory 46. . Additionally, the combined information can be transmitted to the monitoring server through the communication module as described above. The temperature sensor modules 13_1 to 13_N may have various structures and are not limited to the presented embodiment.

Although the present invention has been described in detail above with reference to the presented embodiments, those skilled in the art will be able to make various variations and modifications without departing from the technical spirit of the present invention by referring to the presented embodiments. . The present invention is not limited by such variations and modifications, but is limited by the claims appended below.

11: Temperature data logger module 12: Freezing space
13, 13_1 to 13_N: Temperature sensor module 14: GPS module
15: Communication module 16: Monitoring system
17: Operation information module 22: Operation selection module
27: means of communication 28: storage medium
35: data processing unit 39: transmission information generation unit
42: Trigger 45: Position-Time Unit

Claims (1)

A temperature data logger module 11 that acquires temperature information from a plurality of temperature sensor modules 13_1 to 13_N disposed at different locations in the refrigeration space 12;
a GPS module (14) that provides location information to the temperature data logger module (11);
a communication module (15) enabling wireless communication between the temperature data logger module (11) and the monitoring server (16);
an operation information module 17 that acquires information about the operating means for operation of the refrigeration space 12 and transmits it to the temperature data logger module 11; and
It includes a trigger 42 that synchronizes the detection times of a plurality of temperature sensor modules 13_1 to 13_N operating independently of each other,
The temperature data logger module 11 transmits location information and temperature information of the refrigeration space 12 to the monitoring server 16, and transmits information according to the monitoring results transmitted from the monitoring server 16 to the operating means,
The information on the operating means obtained from the operating information module 17 includes the operating status of the refrigeration system installed in the refrigerated vehicle and the operating information of the engine of the refrigerated vehicle,
The temperature data logger module 11, which is independently made and installed in a refrigerated vehicle so that electronic components are placed inside the body BD in which the receiving space is formed, is a control module 21 that controls the overall operation of the temperature data logger module 11. ); a detection setting unit 24 that controls the operation of a plurality of temperature sensor modules 13_1 to 13_N; An operation selection module 22 including a plurality of operation buttons installed on the front surface of the body BD so that the functions of the temperature data logger module 11 are selected and executed; a storage medium 28 that receives and stores temperature information of the refrigerated space detected by a plurality of temperature sensor modules 13_1 to 13_N; a USB port (25) for copying temperature data stored in the storage medium (28) to USB and updating the operating software of the temperature data logger module (11); CAN communication means (27) for data communication by CAN communication with a plurality of temperature sensor modules (13_1 to 13_N); A display unit 291 disposed on the front side of the body BD to display the current temperature and humidity information of the freezing space in real time; and a printer 292 disposed on the upper part of the body BD to output temperature log data. A temperature monitoring system for a refrigerated vehicle using multi-channel temperature detection using wireless communication, comprising: