Monitoring system, information processing method, monitored terminal and program

Abstract

This monitoring system provides optimal LED lighting control based on predetermined, clear priorities, even when multiple control conditions are met simultaneously. [Solution] The monitoring system 1 includes a monitored terminal 10, a guardian terminal 20, and a server 30. The monitored terminal 10 includes a security buzzer 17, an LED lighting unit 16, a server communication unit 13, and a control unit 11. The control unit 11 illuminates the LED lighting unit 16 in a first mode when predetermined normal operating conditions are met, and illuminates the LED lighting unit 16 in a second mode when the security buzzer 17 is activated, regardless of whether predetermined normal operating conditions are met.

Description

Technical Field

[0001] The present invention relates to a monitoring system, an information processing method, a monitored terminal, and a program.

Background Art

[0002] In recent years, ensuring the safety of children during going to and coming from school has become a social issue. Guardians have various concerns, such as whether their children are safely going to school, whether they have encountered suspicious persons, and whether they have been involved in traffic accidents when returning home at night.

[0003] Under such circumstances, monitoring terminals equipped with a GPS function have become widespread. These terminals provide a mechanism for periodically transmitting location information to a server so that guardians can check the current location of their children using a smartphone or the like. In addition, some terminals are equipped with an anti-theft buzzer function, and it is expected that by emitting a loud alarm sound in an emergency, it will attract the attention of the surroundings and avoid danger. Furthermore, many conventional safety devices have a structure that is attached to the side or back of the backpack body, and the visibility to the front is not sufficient. In particular, regarding LED lighting, there has been a problem that depending on the mounting position, it may be blocked by the child's body and difficult to see from the front.

[0004] Furthermore, in order to enhance nighttime safety, monitoring terminals equipped with LED lighting have also emerged. LED lighting has the effect of improving visibility when walking on a dark road and reducing the risk of traffic accidents. However, the conventional LED lighting function has a problem that it can only perform simple ON / OFF switching and cannot be flexibly controlled according to the situation.

[0005] For example, when the anti-theft buzzer operates while the guardian has set the LED lighting to OFF, the LED lighting does not light up, and visibility in an emergency cannot be ensured. Conversely, if the LED lighting is always kept ON, it will continue to light during the day or when stationary, wasting the battery. Also, in a state where the remaining battery level is low, there is a risk that more important functions such as positioning and buzzer functions cannot be used.

Prior Art Documents

[0006] [Patent Document 1] U.S. Patent No. 5001462 [Overview of the project] [Problems that the invention aims to solve]

[0007] Based on the challenges of the conventional technology described above, the present invention aims to provide a monitoring system, an information processing method, a monitored terminal, and a program that enable LED lighting control according to the situation. [Means for solving the problem]

[0008] To achieve the above objective, the present invention provides a monitoring system comprising a monitored terminal, a guardian terminal, and a server capable of communicating with the monitored terminal and the guardian terminal via a network, wherein the monitored terminal includes a security buzzer, an LED lighting unit, a server communication unit, and a control unit, and the control unit is characterized in that it causes the LED lighting unit to emit light in a first mode when predetermined normal operating conditions are met, and when the security buzzer is activated, it causes the LED lighting unit to emit light in a second mode, regardless of whether the predetermined normal operating conditions are met. [Effects of the Invention]

[0009] According to the above invention, it is possible to achieve LED lighting control according to the situation. [Brief explanation of the drawing]

[0010] [Figure 1] Figure 1 is a system configuration diagram showing the overall configuration of monitoring system 1. [Figure 2] Figure 2 is a functional block diagram showing the functional configuration of the monitored terminal 10. [Figure 3] Figure 3 is a functional block diagram showing the functional configuration of the parent terminal 20. [Figure 4] Figure 4 is a functional block diagram showing the functional configuration of the server 30. [Figure 5] Figure 5 is a flowchart showing the overall flow of the LED lighting control process executed by the control unit 11. [Figure 6] Figure 6 is a flowchart showing the detailed processing flow of the first priority control. [Figure 7] Figure 7 is a flowchart showing the detailed processing flow of the second priority control. [Figure 8] Figure 8 is a flowchart showing the detailed processing flow of the third priority control. [Figure 9] Figure 9 is a flowchart showing the detailed processing flow of the fourth priority control. [Figure 10] Figure 10 is a flowchart showing the detailed processing flow of the fifth priority control. [Figure 11] Figure 11 is a diagram showing the wearing state of the monitored terminal 10. [Figure 12] Figure 12 is a timing chart showing the light emission patterns (first mode and second mode) of the LED lighting unit 16. [Figure 13] Figure 13 is a state transition diagram showing the state transition in the five - layer priority control. [Figure 14] Figure 14 is a flowchart showing the determination flow (illuminance determination and acceleration determination) of the sensor unit 15. [Figure 15] Figure 15 is a screen transition diagram showing the screen transition of the caregiver terminal 20. [Figure 16] Figure 16 is a diagram showing the relationship between the remaining battery level and the operation mode of the power supply unit 19. [[ID=​​​​​​​​​​​​Referring to FIG. 1, the overall configuration of the monitoring system 1 will be described. The monitoring system 1 includes a monitored terminal 10, a protector terminal 20, a server 30, and a network 40 connecting these.

[0012] The monitored terminal 10 is a device carried by a monitored person such as a child, and is equipped with a positioning function, an anti-theft buzzer function, an LED lighting function, etc. The monitored terminal 10 communicates with the server 30 via a mobile phone network (e.g., LTE, LTE-M, 5G, etc.).

[0013] The protector terminal 20 is a smartphone, tablet terminal, etc. operated by a protector. By executing a dedicated application, it can perform functions such as confirming the position of the monitored person, remotely controlling the ON / OFF of the LED lighting, and various settings. The protector terminal 20 communicates with the server 30 via an Internet connection (Wi-Fi or mobile network).

[0014] The server 30 receives and stores the position information transmitted from the monitored terminal 10, and provides this information in response to requests from the protector terminal 20. It also plays a role in relaying control information such as LED lighting permission information transmitted from the protector terminal 20 to the monitored terminal 10.

[0015] 1.2 Wearing state of the monitored terminal Referring to FIG. 11, the wearing state of the monitored terminal 10 will be described. FIG. 11 is a diagram showing the state in which the monitored terminal 10 is attached to the shoulder strap of a backpack.

[0016] The monitored terminal 10 is attached to the shoulder strap of the backpack via a circular ring 170a. The circular ring 170a is fixed to the upper part of the shoulder strap and is connected to the central upper end of the monitored terminal 10 by a pulling component 17a. With this configuration, the monitored terminal 10 is located near the front of the child's chest and can be carried in a natural posture.

[0017] A large LED lighting unit 16a is positioned on the surface of the monitored terminal 10. This LED lighting unit 16a is located on the upper front of the monitored terminal 10 and can effectively illuminate the area in front of the child. Additionally, a speaker hole for a security buzzer, an operation unit 17b, and an indicator LED 19a are located on the surface.

[0018] The method for activating the security alarm will be explained. When a child pulls the monitored device 10 downwards in an emergency, a force is applied that detaches the device from the circular ring 170a, activating the security alarm 17. This pull-type mechanism ensures that children can reliably activate the security alarm even in sudden situations.

[0019] In this embodiment, the following technical effects can be obtained by attaching the monitoring terminal 10 to the shoulder strap of the school bag. First, since the LED lighting unit 16a is located on the front of the child's chest, it becomes easier for oncoming pedestrians and vehicles to recognize the child's presence, improving forward visibility. Second, since the shoulder strap is always in close contact with the child's body, the posture of the monitoring terminal 10 is stable, and fluctuations in the direction of illumination of the LED lighting unit 16a are suppressed. Third, because it is located on the front of the chest, the child can intuitively and quickly pull the terminal to activate the security alarm.

[0020] The shoulder strap fixing part 174 is a component for fixing the shoulder strap to the circular ring 170a, and has the function of stabilizing the position of the circular ring 170a relative to the strap. This fixing part prevents the monitored terminal 10 from unintentionally rotating or shifting position.

[0021] The mounting position of the monitoring device 10 is not limited to the shoulder strap; it may also be attached to the side, back, belt loop, or clothing pocket of the school bag, as long as it is easy for the child to carry and the LED lighting unit 16a can provide sufficient illumination. However, the attachment to the shoulder strap described in this embodiment is superior in terms of visibility, operability, and safety.

[0022] 2. Hardware Configuration The hardware configuration of each device (the monitored terminal 10, the guardian terminal 20, and the server 30) that constitutes the monitoring system 1 of this embodiment will be described in detail below.

[0023] 2.1 Hardware configuration of the monitored terminal Referring to Figure 2, the hardware configuration of the monitored terminal 10 will be described. The monitored terminal 10 includes the following hardware components:

[0024] CPU (Central Processing Unit): This is the core arithmetic processing unit of the control unit 11, and for example, an embedded processor is used. The CPU controls the overall operation of the monitored terminal 10 by executing the control program stored in the memory unit 12, which will be described later.

[0025] RAM (Random Access Memory): This is a volatile memory used as a workspace when the control unit 11 performs calculations, and has a capacity of approximately 64KB to 256KB. Temporary data such as sensor data, communication data, and control status is stored in the RAM.

[0026] ROM (Read Only Memory): This is a non-volatile memory that stores control programs, initial settings, etc., and has a capacity of approximately 512KB to 2MB. The control programs stored in ROM are loaded into RAM and executed when the CPU starts up.

[0027] Flash memory: This is a non-volatile memory that functions as the storage unit 12 and has a capacity of approximately 4MB to 16MB. The flash memory stores LED lighting permission information, various settings, location history (for backup in case of communication interruption), etc.

[0028] Wireless communication module: Functions as the server communication unit 13 and communicates with the server 30 via a mobile phone network such as LTE, LTE-M, or 5G. For example, a cellular communication module is used.

[0029] GNSS module: Functions as a positioning unit 14, receiving signals from satellite positioning systems such as GPS to determine the current position.

[0030] Illuminance sensor: Functions as part of the sensor unit 15 and measures ambient brightness. For example, the measurement range is approximately 0.01 lux to 64,000 lux.

[0031] Accelerometer: Functions as part of the sensor unit 15 and measures acceleration in three axes (X, Y, Z). For example, the measurement range is approximately ±2G to ±16G.

[0032] LED driver IC: This is a circuit that drives the LED lighting unit 16 and controls the supply of current to the LEDs based on control signals from the CPU.

[0033] White LEDs: These are the light-emitting elements of the LED lighting unit 16. For example, one to three high-brightness white LEDs with an output of approximately 20 to 50 lumens are used. Depending on the arrangement of the LEDs, an area of ​​approximately 120 degrees in front can be illuminated.

[0034] Piezoelectric buzzer: A piezoelectric buzzer capable of generating a sound pressure level of approximately 80-100 dB is used, functioning as a security buzzer 17. The buzzer is driven by controlling the voltage applied to the piezoelectric element using a control signal from the CPU.

[0035] Tact switches: These are physical buttons that function as the control unit 18, allowing children to perform various operations by pressing them. For example, a security buzzer button, a lighting button, etc., may be provided. The pressed state of each button is detected by the CPU's GPIO (General Purpose Input / Output) pins.

[0036] Lithium-ion secondary battery: Functions as the power supply unit 19, and a lithium-ion secondary battery with a nominal voltage of approximately 3.7V and a capacity of 500mAh to 1,000mAh is used. Battery level monitoring is achieved by an ADC (Analog-to-Digital Converter) circuit that measures the battery voltage.

[0037] USB charging circuit: Functions as part of the power supply unit 19 and charges the battery from an external power source via a USB Type-C terminal or Micro USB terminal.

[0038] Enclosure: This is the outer casing that houses the above-mentioned hardware components, and is made of impact-resistant plastic material such as ABS resin or polycarbonate. The dimensions of the enclosure are, for example, approximately 40mm wide x 60mm high x 15mm thick, and it weighs approximately 50g. The dustproof and waterproof performance is approximately IP65.

[0039] 2.2 Hardware configuration of parental device The parent device 20 is a commercially available smartphone or tablet device and has the following hardware configuration:

[0040] CPU: Application processors such as Qualcomm Snapdragon, Apple A-series, and MediaTek Dimensity are used. RAM: For example, it has a memory capacity of about 4GB to 12GB. Storage: For example, it has flash memory of about 64GB to 512GB, which is used to store applications and data. Touchscreen display: For example, an LCD or OLED display of about 5-7 inches with a resolution of around 1080p to 4K. Wireless communication module: Includes Wi-Fi (IEEE 802.11 a / b / g / n / ac / ax) and 4G / 5G cellular communication module. Operating System: Runs a mobile OS. Monitoring application: This is dedicated application software that runs on the parent terminal 20 and communicates with the server 30 to display the location information of the monitored terminal 10, set LED lighting permission information, and perform other functions.

[0041] 2.3 Server Hardware Configuration Server 30 is configured as either a cloud server or an on-premises server and has the following hardware configuration:

[0042] Referring to Figure 4, the functional configuration of the server 30 will be described in detail. Figure 4 is a functional block diagram of the server 30, which comprises a control unit 31, a storage unit 32, and a communication unit 33.

[0043] The control unit 31 includes a multi-core processor (CPU) and provides overall control over the operation of the server 30. The control unit 31 processes location information and buzzer activation notifications received from the monitored terminal 10 via the communication unit 33 and stores them in the database of the storage unit 32. It also receives requests from the guardian terminal 20 to change LED lighting permission information and relays them to the corresponding monitored terminal 10.

[0044] The memory unit 32 includes a large-capacity storage (database server) and stores a monitored terminal management table, a location history table, an LED lighting setting table, a notification history table, and so on (see Figure 17). The information stored in the memory unit 32 can be searched and updated at high speed by the control unit 31.

[0045] The communication unit 33 includes a network interface and communicates with the monitored terminal 10 and the guardian terminal 20 via the internet. The communication unit 33 supports encrypted communication using the HTTPS protocol, ensuring secure information transmission.

[0046] 3. Functional configuration of the monitored terminal Referring to Figure 2, the functional configuration of the monitored terminal 10 will be described. The monitored terminal 10 comprises a control unit 11, a storage unit 12, a server communication unit 13, a positioning unit 14, a sensor unit 15, an LED lighting unit 16, a security buzzer 17, an operation unit 18, and a power supply unit 19.

[0047] 3.1 Overview of each component The external appearance of the monitoring terminal 10 is described below. The housing is designed to be compact and easy for children to hold (for example, approximately 40mm wide x 60mm high x 15mm thick). The front has the light-emitting part of the LED lighting unit 16, and the side or back has the speaker part of the security buzzer 17.

[0048] The control unit 18 includes a security alarm button, a lighting button, and the like. Each button is located on the front or side of the housing and is positioned so that it can be easily accessed by children.

[0049] The power supply unit 19 includes a lithium-ion secondary battery. The battery capacity is, for example, around 500mAh to 1,000mAh, allowing for approximately 3 to 5 days of continuous operation under normal use. The power supply unit 19 includes a battery level monitoring circuit that monitors the remaining battery level and estimates the remaining level by measuring the battery voltage. The power supply unit 19 also has a charging function via a USB terminal or the like, allowing the battery to be charged from an external power source.

[0050] The housing of the monitored terminal 10 is made of a plastic material with impact resistance (e.g., ABS resin, polycarbonate) and has dustproof and waterproof performance of approximately IP65. The size of the housing is approximately 40mm wide x 60mm high x 15mm thick, and the weight is approximately 50g.

[0051] 3.2 Control Unit The control unit 11 is a microcomputer including a CPU, ROM, RAM, etc., and controls the overall operation of the monitored terminal 10 by executing a control program stored in the memory unit 12. In particular, in this embodiment, the control unit 11 performs a five-tier priority control, which will be described later, and controls the light emission of the LED lighting unit 16.

[0052] 3.3 Storage The memory unit 12 is a non-volatile memory such as flash memory, and stores control programs, various setting values, LED lighting permission information, etc. It also has a function to retain the last received LED lighting permission information in case communication with the server 30 is temporarily interrupted.

[0053] 3.4 Server Communication Section The server communication unit 13 is a communication module that communicates with the server 30 via a mobile phone network (LTE, LTE-M, 5G, etc.). The server communication unit 13 performs tasks such as periodically transmitting location information, receiving LED lighting permission information, and transmitting security buzzer activation notifications.

[0054] 3.5 Positioning Unit The positioning unit 14 measures the current location using a satellite positioning system such as GPS. The determined location information is transmitted to the server 30 via the server communication unit 13. The transmission interval for location information is set to 1 minute in normal mode, 5 minutes in power saving mode, and 15 seconds in emergency mode.

[0055] 3.6 Sensor section The sensor unit 15 includes an illuminance sensor 15a and an acceleration sensor 15b. The illuminance sensor 15a is used to detect ambient brightness and determine whether it is daytime or nighttime. The acceleration sensor 15b is used to detect the movement of the monitored terminal 10 and determine whether the child is moving or stationary.

[0056] The illuminance sensor 15a uses a predetermined value (for example, 50 lux) as the criterion for determining illuminance. If the ambient illuminance is below this predetermined value, it is determined to be "nighttime," and if it exceeds the predetermined value, it is determined to be "daytime."

[0057] The acceleration sensor 15b determines that the child is walking or running if the acceleration change is above a predetermined threshold (e.g., 0.2G) and the change continues for a predetermined time (e.g., 0.5 seconds to 2 seconds) as the state of movement. Specifically, the combined acceleration α = √(ax) is calculated from the accelerations of the three axes (ax, ay, az). 2 + ay 2 + az 2 The system calculates the value and monitors whether this value continues to exceed the threshold mentioned above. This threshold is set considering the acceleration changes in a child's typical walking and running patterns. During normal walking, an acceleration change of approximately 0.1G to 0.2G occurs, and during running, it increases to about 0.2G to 0.5G. In this embodiment, a slightly lower threshold (e.g., 0.15G) is set as the base value to ensure reliable detection even during walking. If the change in the combined acceleration remains extremely small (for example, 0.05G or less) for a certain period of time (for example, 3 to 10 minutes), it is determined that the child is stationary. Based on this determination, the fourth priority control is executed, and the LED lighting unit 16 is automatically turned off. By setting the threshold for stationary detection lower than the threshold for moving detection (e.g., 0.15G for moving, 0.05G for stationary), hysteresis (history dependence) of the detection is ensured, preventing frequent switching between moving and stationary states. The acceleration sensor 15b acquires acceleration data at a sampling rate of, for example, 10Hz to 50Hz, and the control unit 11 smooths the acquired data using a moving average filter or the like before executing the judgment process described above. This suppresses false judgments caused by temporary noise or vibration.

[0058] Adjustability of sensor detection threshold Furthermore, the various thresholds of the illuminance sensor 15a and acceleration sensor 15b (illuminance threshold, acceleration threshold, static duration, etc.) can be adjusted according to the child's age, usage environment, season, etc. For example, in the application of the parent terminal 20, the illuminance threshold can be adjusted from the "Sensitivity Settings" menu to a range of 10 lux to 100 lux, the acceleration threshold to a range of 0.1G to 0.3G, and the static duration to a range of 1 minute to 10 minutes. These settings are transmitted from the parent terminal 20 to the monitored terminal 10 via the server 30 and stored in the memory unit 12.

[0059] Referring to Figure 14, the details of the determination process by the sensor unit 15 will be explained. Figure 14 is a flowchart showing the determination process by the illuminance sensor 15a and the acceleration sensor 15b. This flowchart is executed in the second priority control to determine whether or not to turn on the LED lighting unit 16.

[0060] The upper part of Figure 14 shows the illuminance determination process by the illuminance sensor 15a. First, the control unit 11 acquires ambient illuminance data from the illuminance sensor 15a (step S1001). Next, it determines whether the acquired illuminance value is less than or equal to a predetermined value (for example, 50 lux) (step S1002).

[0061] If the illuminance value is below a predetermined value (step S1002: YES), the control unit 11 determines that it is "nighttime" and proceeds to the next acceleration determination process (S1003). On the other hand, if the illuminance value exceeds a predetermined value (step S1002: NO), the control unit 11 determines that it is "daytime" (step S1004), and since LED lighting is not needed, the process ends.

[0062] The middle section of Figure 14 shows the motion state determination process using the acceleration sensor 15b. If the illumination determination determines that it is "nighttime", the control unit 11 acquires 3-axis acceleration data (ax, ay, az) from the acceleration sensor 15b (step S1003).

[0063] Next, the control unit 11 calculates the composite acceleration α from the acquired three-axis accelerations (step S1005). This composite acceleration is an indicator of the magnitude of movement of the monitored terminal 10.

[0064] The control unit 11 determines whether the calculated composite acceleration α is equal to or greater than a predetermined threshold (e.g., 0.15G) and whether that state continues for a predetermined time (e.g., 0.5 seconds) or longer (step S1006).

[0065] If the combined acceleration is above a threshold and the duration is above a predetermined time (step S1006: YES), the control unit 11 determines that "movement is occurring" (step S1008). In this case, since both the illuminance determination and acceleration determination conditions are met, the LED lighting unit 16 is permitted to light up.

[0066] On the other hand, if the combined acceleration is below a threshold (step S1006: NO), the control unit 11 further determines whether the stationary state continues. Specifically, it determines whether the combined acceleration is below an extremely small value (e.g., 0.05G) and whether that state continues for a predetermined time (e.g., 3 minutes) or longer (step S1008).

[0067] If the stationary state continues for a predetermined time or longer (step S1008: YES), the control unit 11 determines that the system is "stationary" (step S1009). In this case, the LED lighting is not needed and is turned off. On the other hand, if the stationary state is less than the predetermined time (step S1008: NO), the system determines that the determination is "pending" (step S1010) and maintains the current LED lighting state.

[0068] The lower part of Figure 14 shows the overall determination in the second priority control. Three conditions—illumination sensor determination, acceleration sensor determination, and LED lighting permission information—are comprehensively evaluated to determine the operation of the LED lighting unit 16. Specifically, the LED lighting unit 16 is blinked in the first mode only if all conditions are met: "illumination determination = nighttime", "acceleration determination = moving", and "LED permission = ON". Otherwise, the LED lighting unit 16 is turned off.

[0069] 3.7 LED lighting section The LED lighting unit 16 includes a white LED and illuminates the area in front. Based on the control of the control unit 11, the LED lighting unit 16 emits light in either a first mode (slow blinking) or a second mode (high-speed flashing).

[0070] The first embodiment is a flashing pattern that repeatedly turns on and off at intervals of approximately 0.5 to 2 seconds. For example, a pattern that repeatedly turns on for 1 second and off for 1 second is used. This flashing pattern is optimized to allow people in the vicinity to recognize the presence of a child while suppressing battery consumption.

[0071] The second embodiment is a high-speed flashing pattern that repeatedly turns on and off with a cycle of approximately 0.1 to 0.3 seconds. For example, a pattern that repeatedly turns on for 0.2 seconds and off for 0.2 seconds is used. This flashing pattern is clearly distinguishable from the first embodiment and is intended to immediately alert people in the vicinity to an emergency.

[0072] The luminous flux of the LED lighting unit 16 is, for example, about 20 to 50 lumens, and it can illuminate a range of approximately 120 degrees in front of it. Furthermore, the arrangement of the LEDs is designed to effectively illuminate the direction in which the child is moving.

[0073] The light emission pattern of the LED lighting unit 16 will be described in detail with reference to Figure 12. Figure 12 is a timing chart showing the brightness of the LED lighting unit 16 on a time axis.

[0074] The second mode (flashing pattern when the security alarm is activated) is a high-speed flashing pattern with a period of approximately 0.2 to 0.4 seconds, for example, repeating 0.2 seconds ON and 0.2 seconds OFF. The frequency of this flashing is set to a frequency range (2 to 5 Hz) that strongly attracts the attention of human vision, and is used to signal a high level of urgency to those around.

[0075] The first mode (normal flashing pattern) is a slow flashing pattern with a period of about 1 to 2 seconds, for example, repeating 1 second ON, 1 second OFF. This flashing pattern is intended to ensure visibility when moving at night while suppressing battery consumption.

[0076] The difference in flashing cycle between the first and second modes is at least five times, making them visually distinct. This clear distinction allows people in the vicinity to immediately determine whether the monitored terminal 10 is operating normally or in an emergency.

[0077] 3.8 Personal safety alarm The security alarm 17 includes a piezoelectric buzzer and, when activated by a child in an emergency, emits a loud alarm sound of approximately 80-100 dB. The security alarm 17 is activated by pressing the security alarm button on the control unit 18 or by pulling a dedicated string.

[0078] 3.9 Control section The control unit 18 includes a security alarm button, a lighting button, and the like. Each button is located on the front or side of the housing and is positioned so that it can be easily accessed by children.

[0079] 3.10 Power supply section The power supply unit 19 includes a lithium-ion secondary battery. The battery capacity is, for example, around 500mAh to 1,000mAh, allowing for approximately 3 to 5 days of continuous operation under normal use.

[0080] 4. Priority control of the LED lighting section The most distinctive feature of this embodiment is that it implements a five-stage priority control in the light emission control of the LED lighting unit 16. The details of this priority control will be described below.

[0081] 4.1 Overview of Priority Control Referring to Figure 5, the overall flow of priority control for the LED lighting unit 16 will be explained. The control unit 11 evaluates the following five priority controls in order, and executes the control if the control condition with the highest priority is met. First priority control (highest priority): When the security buzzer 17 is activated, the LED lighting unit 16 is made to flash rapidly (second mode), regardless of any other conditions. Second priority control: If the LED lighting permission information received from the parent terminal 20 via the server 30 is ON, and the determination results of the illuminance sensor 15a and the acceleration sensor 15b satisfy predetermined conditions, the LED lighting unit 16 is made to emit light (first mode). Third priority control: When the lighting button on the control unit 18 is pressed, the LED lighting unit 16 is temporarily illuminated (first mode). However, this illumination is automatically turned off after a predetermined time (for example, 10 minutes). Fourth priority control: If the stationary state continues for a predetermined time (e.g., 3 minutes), the LED lighting unit 16 is automatically turned off. Fifth priority control (lowest priority): When the battery level is below a predetermined value (e.g., 10%), the operation of the LED lighting unit 16 is restricted, and the LED lighting unit 16 is illuminated only when the security buzzer 17 is activated (power saving mode).

[0082] 4.2 Detailed Processing Flow for Priority Control Referring to Figure 5, the detailed processing flow of the LED lighting control process performed by the control unit 11 will be described. This process is performed periodically (for example, every 0.5 seconds) by the control unit 11.

[0083] First, the control unit 11 determines whether or not the security alarm 17 is activated (step S201). If the security alarm 17 is activated, a positive result is obtained in step S201. In this case, the control unit 11 performs first priority control and blinks the LED lighting unit 16 in the second mode (step S202). After this, the control unit 11 either terminates the LED lighting control process or returns to step S201.

[0084] Refer to Figure 6 to explain the detailed processing flow of the first priority control. Figure 6 is a flowchart showing the processing procedure of the first priority control that is executed when the security alarm 17 is activated.

[0085] First, the control unit 11 continuously monitors whether or not it has received an activation signal from the security buzzer 17 (step S301). If no activation signal has been received, the control unit 11 continues this monitoring.

[0086] When an activation signal is received from the security buzzer 17 (step S301: YES), the control unit 11 immediately performs the following processes in parallel. First, it sends a light emission command in the second mode (high-speed flashing) to the LED lighting unit 16 (step S302). At this time, all other conditions such as the status of the LED lighting permission information, the battery level, and the sensor judgment result are ignored.

[0087] Secondly, the control unit 11 obtains current location information from the positioning unit 14 (step S303) and sends an emergency notification to the server 30 via the communication unit 13 (step S304). This emergency notification includes information such as the terminal ID, the time the security buzzer was activated, the current location (latitude and longitude), and the remaining battery level.

[0088] Server 30 processes received emergency notifications with the highest priority and sends a push notification to the parent device 20. On the parent device 20, the emergency alert screen is automatically displayed, and the parent is notified of the emergency through voice notification and vibration.

[0089] The control unit 11 continues to blink the LED lighting unit 16 while the security alarm 17 is still operating. If the security alarm 17 stops (step S305: YES), the control unit 11 stops blinking the LED lighting unit 16 (step S306) and returns to the normal priority determination process from step S203 onwards in Figure 5.

[0090] On the other hand, if the security buzzer 17 is not activated, a negative result is obtained in step S201. In this case, the control unit 11 determines whether the battery level is below a predetermined value (for example, 10%) (step S203). If the battery level is below the predetermined value, a positive result is obtained in step S203. In this case, the control unit 11 executes fifth priority control and turns off the LED lighting unit 16 (step S204). After this, the control unit 11 either terminates the LED lighting control process or returns to step S201.

[0091] Referring to Figure 16, the relationship between the battery level of the power supply unit 19 and the operating mode will be explained. Figure 16 is a diagram showing the transitions between the three operating modes (normal mode, power saving mode, and emergency mode) as the battery level decreases.

[0092] Normal mode is applied when the battery level is 30% or higher, and all functions operate normally. Specifically, the positioning unit 14 transmits location information at 1-minute intervals, and the LED lighting unit 16 operates according to the first priority control to the fourth priority control.

[0093] The power-saving mode is applied when the battery level is between 10% and 30% (5th priority control). In this mode, the location information transmission interval is extended to 5 minutes, and the operation of the LED lighting unit 16 is restricted. Specifically, only the 1st priority control (flashing when the security buzzer is activated) is active, and the LED lighting and flashing caused by the 2nd and 3rd priority controls are suppressed.

[0094] The emergency mode is applied when the battery level is below 10%. In this mode, the location information transmission interval is extended to an additional 15 minutes, and the LED lighting unit 16 operates only when the security buzzer 17 is activated. This ensures that the most important security functions operate until just before the battery is completely depleted.

[0095] By switching between the operating modes described above, the monitored terminal 10 of this embodiment achieves a fail-safe design. That is, as the battery level decreases, it gradually restricts its functions while maintaining the most important security function (the security buzzer 17 and the flashing of the LED lighting unit 16 linked to it) until the very end.

[0096] On the other hand, if the battery level exceeds a predetermined value, a negative result is obtained in step S203. In this case, the control unit 11 determines whether a predetermined operation (e.g., double tap) has been detected on the operation unit 18 (step S205). If the predetermined operation is detected, a positive result is obtained in step S205. In this case, the control unit 11 performs third-priority control and lights up the LED lighting unit 16 for a predetermined time (e.g., 10 minutes) (step S206). After this, the control unit 11 either terminates the LED lighting control process or returns to step S201.

[0097] On the other hand, if no predetermined operation is detected, a negative result is obtained in step S205. In this case, the control unit 11 determines whether the stationary state has continued for a predetermined time (for example, 3 minutes) using the acceleration sensor 15b (step S207). If the stationary state has continued for the predetermined time, a positive result is obtained in step S207. In this case, the control unit 11 executes fourth priority control and turns off the LED lighting unit 16 (step S208). After this, the control unit 11 either terminates the LED lighting control process or returns to step S201.

[0098] On the other hand, if the stationary state does not continue for a predetermined time, a negative result is obtained in step S207. In this case, the control unit 11 determines whether or not the LED lighting permission information is ON (step S209). If the LED lighting permission information is not ON, a negative result is obtained in step S209. In this case, the control unit 11 turns off the LED lighting unit 16 (step S210) and terminates the LED lighting control process, or returns to step S201.

[0099] On the other hand, if the LED lighting permission information is ON, a positive result is obtained in step S209. In this case, the control unit 11 determines whether the determination results of the illuminance sensor 15a and the acceleration sensor 15b satisfy predetermined conditions (step S211). Specifically, it determines whether the illuminance sensor 15a detects darkness below a predetermined value and whether the acceleration sensor 15b detects movement.

[0100] If both conditions are met, a positive result is obtained in step S211. In this case, the control unit 11 performs second priority control and turns on or blinks the LED lighting unit 16 in the first mode (step S212). After this, the control unit 11 terminates the LED lighting control process or returns to step S201.

[0101] Refer to Figure 7 to explain the detailed processing flow of the second priority control. Figure 7 is a flowchart showing the processing procedure for automatic control based on LED lighting permission information from the parent terminal 20.

[0102] First, the control unit 11 determines whether the LED lighting permission information received from the server 30 is ON or OFF (step S401). If the LED lighting permission information is OFF (step S401: NO), the control unit 11 turns off the LED lighting unit 16 (step S410) and terminates the process.

[0103] If the LED lighting permission information is ON (step S401: YES), the control unit 11 performs illuminance determination using the illuminance sensor 15a (step S402). Specifically, it compares the illuminance value detected by the illuminance sensor 15a with a predetermined threshold (e.g., 50 lux).

[0104] If the illuminance value is below a threshold (step S402: YES, determined to be "nighttime"), the control unit 11 performs a movement determination using the acceleration sensor 15b (step S403). Specifically, it determines whether the acceleration change over the past 5 seconds is above a predetermined threshold (e.g., 0.1G).

[0105] If the acceleration change is greater than or equal to a threshold (step S403: YES, determined to be "moving"), the control unit 11 causes the LED lighting unit 16 to light up in the first mode (step S404). The first mode of light emission pattern is, for example, a slow blinking pattern of 1 second ON and 1 second OFF.

[0106] On the other hand, if the illuminance value exceeds a threshold (step S402: NO, determined to be "daytime"), or if the acceleration change is less than a threshold (step S403: NO, determined to be "stationary"), the control unit 11 turns off the LED lighting unit 16 (step S410).

[0107] Thus, with the second priority control, the LED lights only turn on when all three conditions are met: parental permission, nighttime, and while moving. This ensures that the LED lights only operate when truly necessary, optimizing battery consumption.

[0108] Refer to Figure 8 to explain the detailed processing flow of the third priority control. Figure 8 is a flowchart showing the processing procedure for temporary lighting control based on local operation of the control unit 18 by a child.

[0109] The control unit 11 continuously monitors whether or not it has received a predetermined operation signal (e.g., double tap) from the operation unit 18 (step S501). If it has not received a predetermined operation signal, the control unit 11 continues this monitoring.

[0110] When a predetermined operation signal is received (step S501: YES), the control unit 11 immediately causes the LED lighting unit 16 to illuminate in the first mode (step S502). At this time, the lights illuminate regardless of the status of the LED lighting permission information (ON / OFF). This allows children to use the LED lighting temporarily as needed, even if a parent has set the LED lighting to OFF.

[0111] The control unit 11 activates an internal timer and monitors whether a predetermined time (for example, 10 minutes) has elapsed (step S503). If the predetermined time has not elapsed, the LED lighting unit 16 continues to light up.

[0112] If a predetermined time has elapsed (Step S503: YES), or if the child operates the control unit 18 again to instruct the lights to be turned off, the control unit 11 turns off the LED lighting unit 16 (Step S504) and terminates the process. After that, the process returns to the normal priority determination process shown in Figure 5.

[0113] The technical significance of third-priority control lies in balancing remote management by parents (second priority) with autonomous decision-making by children (third priority). It respects parental settings while leaving room for children to flexibly use LED lighting in emergencies or special situations.

[0114] Refer to Figure 9 to explain the detailed processing flow of the fourth priority control. Figure 9 is a flowchart showing the processing procedure for automatic light-off control when the system remains stationary.

[0115] The control unit 11 continuously monitors the output value of the acceleration sensor 15b and determines whether or not the acceleration change remains extremely small (for example, 0.05G or less) (step S601).

[0116] If the acceleration change remains extremely small for a predetermined time (for example, 3 minutes) (Step S601: YES), the control unit 11 determines that "the stationary state continues" and turns off the LED lighting unit 16 (Step S602).

[0117] On the other hand, if an acceleration change exceeding a predetermined value is detected within a predetermined time (step S601: NO), the control unit 11 determines that the system is not stationary and maintains the current lighting state of the LED lighting unit 16. After that, the system returns to the normal priority determination process shown in Figure 5.

[0118] The technical significance of the fourth priority control lies in preventing unnecessary battery consumption when children are stationary at school or home. On the other hand, once movement resumes, safety is ensured because the lights will automatically relight if the conditions for the second priority control (parental permission ON, nighttime, and in motion) are met.

[0119] Refer to Figure 10 to explain the detailed processing flow of the fifth priority control. Figure 10 is a flowchart showing the processing procedure for failsafe control when the battery level is low.

[0120] The control unit 11 periodically acquires battery level information from the power supply unit 19 and determines whether the battery level is below a predetermined value (for example, 10%) (step S701).

[0121] If the battery level exceeds a predetermined value (step S701: NO), the device operates in normal mode, and the 1st to 4th priority controls are executed as usual.

[0122] If the battery level is below a predetermined value (step S701: YES), the control unit 11 switches to power-saving mode or emergency mode (step S702). In this mode, the following limitations apply: - Suppress second priority control (automatic lighting with parental permission) - Suppress third-priority control (temporary illumination via local operation) - Continue with the 4th priority control (automatic power off when stationary). - However, the first priority control (forced flashing when the security alarm is activated) is always performed.

[0123] Specifically, the control unit 11 determines whether or not the security alarm 17 is activated (step S703). If the security alarm 17 is activated (step S703: YES), the LED lighting unit 16 is made to blink in the second mode regardless of the remaining battery level (step S704).

[0124] If the security alarm 17 is not activated (step S703: NO), the control unit 11 turns off the LED lighting unit 16 (step S705). This prioritizes allocating the limited power to maintaining the positioning function and the security alarm function.

[0125] The technical significance of the fifth priority control lies in maintaining the most important security functions until the very end, even when the battery level is low. This "gradual function limitation" ensures emergency response capabilities right up until the battery runs out.

[0126] On the other hand, if the conditions are not met, a negative result is obtained in step S211. In this case, the control unit 11 turns off the LED lighting unit 16 (step S210) and terminates the LED lighting control process, or returns to step S201.

[0127] In this way, condition checks are performed in the order of first-priority control to fifth-priority control, and the LED lighting unit 16 is controlled based on the condition with the highest priority, thereby achieving appropriate operation according to the situation.

[0128] 4.3 State transitions of priority control Refer to Figure 13 for a detailed explanation of the state transitions in priority control. Figure 13 is a state transition diagram showing the state transitions in a five-tier priority control system.

[0129] In the state transition diagram, each state is represented by one of six states: "First priority control in progress," "Second priority control in progress," "Third priority control in progress," "Fourth priority control in progress," "Fifth priority control in progress," and "LED off." Transitions between states occur when the activation conditions for each priority control are met or released.

[0130] As an example of a specific state transition, the following scenario is described. Assume the initial state is "LED off". If the security alarm 17 is activated in this state, the system immediately transitions to the "First priority control in progress" state, and the LED lighting unit 16 begins blinking in the second mode. When the security alarm 17 stops, it is determined whether the next highest priority condition (for example, the condition for second priority control) is met. If it is met, the system transitions to the "Second priority control in progress" state; otherwise, it returns to the "LED off" state.

[0131] Furthermore, if the security buzzer 17 is activated while in the "Second Priority Control in Progress" state (sensor-based control based on parental permission), the system immediately transitions to the higher-priority "First Priority Control in Progress" state, interrupting the current control and starting the LED to blink. In this way, the priority control of this embodiment ensures predictable and unambiguous operation by always transitioning to the control state where the highest priority condition is met.

[0132] Refer to Figure 13 to explain the state transitions in the five-tier priority control in detail. Figure 13 is a state transition diagram showing the state transitions between each priority control with arrows.

[0133] In the state transition diagram, each state is represented by one of six states: "First priority control in progress," "Second priority control in progress," "Third priority control in progress," "Fourth priority control in progress," "Fifth priority control in progress," and "LED off."

[0134] The basic principle of state transitions is to "always transition to the state corresponding to the highest priority condition." For example, if the security buzzer 17 is activated while the second priority control is being executed, the system immediately transitions to the state where the first priority control is being executed, interrupting the current control and causing the LED lighting unit 16 to blink in the second mode.

[0135] Conversely, if the conditions for a higher priority control are cleared, the next highest priority condition is evaluated, and the system transitions to the corresponding state. For example, after the security alarm 17 stops, if the conditions for the second priority control (parental permission ON, nighttime, moving) are met, the system transitions to the state where the second priority control is active; otherwise, it returns to the state where the LED is off.

[0136] 5. Functionality of the Parental Device Referring to Figure 3, the functional configuration of the parent terminal 20 will be described. The parent terminal 20 comprises a control unit 21, a storage unit 22, a display unit 23, an operation unit 24, and a server communication unit 25.

[0137] The control unit 21 includes a CPU, ROM, RAM, etc., and executes application programs stored in the storage unit 22 to realize various functions of the guardian terminal 20. The display unit 23 is a touchscreen display that shows the location information of the monitored terminal 10, the status of the LED lighting, etc. The operation unit 24 detects touch input to the touchscreen. The server communication unit 25 communicates with the server 30 via an internet connection (Wi-Fi or mobile network).

[0138] Refer to Figure 15 to explain the screen transitions on the parent device 20. Figure 15 is a screen transition diagram showing the transition relationships between application screens on the parent device 20.

[0139] On the main screen, the current location of the monitored device 10 is displayed on a map with a marker, and the status of the LED lighting (ON / OFF) is also visualized with an icon. Parents can access the LED lighting settings screen by tapping the "LED Lighting Settings" button from the main screen.

[0140] On the LED lighting settings screen, you can switch the LED lighting ON / OFF using a slide switch. After changing the settings, tapping the "Save" button sends the setting information to the monitored terminal 10 via the server 30. This settings screen reduces the operational burden by omitting complex menu operations and confirmation screens, making it easy for elderly caregivers to use.

[0141] The emergency notification screen automatically appears when the security alarm 17 is activated. This screen displays an emergency alert message, a map showing the current location, and a button to contact emergency contacts. Parents can take appropriate action immediately from this screen.

[0142] 6. Server Functional Configuration Referring to Figure 4, the functional configuration of the server 30 will be described. The server 30 comprises a control unit 31, a database 32, and a communication unit 33.

[0143] The control unit 31 includes a CPU and executes programs stored in the database 32 to perform functions such as receiving and storing location information from the monitored terminal 10, providing information to the guardian terminal 20, and relaying LED lighting permission information.

[0144] The database 32 stores location information history, LED lighting permission information, and security alarm activation history for each monitored terminal 10. The communication unit 33 communicates with the monitored terminals 10 and the guardian terminal 20 via the internet.

[0145] When the server 30 receives a request from the guardian terminal 20 to change the LED lighting permission information, it sends the changed LED lighting permission information to the monitored terminal 10. The monitored terminal 10 stores the received LED lighting permission information in the storage unit 12 and uses it for subsequent control.

[0146] Database structure Referring to Figure 17, the structure of the database 32 on server 30 will be described. Database 32 is configured as a relational database management system (RDBMS), and its normalized table structure ensures data integrity and efficient search performance. As shown in Figure 17, database 32 consists of four main tables (user information table, monitored terminal table, emergency notification history table, and location information history table). Details of each table will be described below.

[0147] (1) User information table (parental control table): The User ID (Parent ID) is used as the primary key to centrally manage the parent's basic information. The main fields are as follows: - User ID (Primary Key): A unique identifier for each guardian (in VARCHAR(50) format) - Parent / Guardian Name: Parent / Guardian's Name (VARCHAR(100)) - Email address: Contact email address (VARCHAR(200)) - Registration Date and Time: Account registration date and time (DATETIME format) This table functions as the parent table for the entire system, and is structured in a way that allows one guardian to manage multiple monitored devices.

[0148] (2) Table of monitored terminals (core management table): The system uses the device ID as the primary key and the user ID (guardian ID) as the foreign key to manage the basic information and current status of each monitored device. It has a one-to-many (1:N) relationship with the user information table, allowing one guardian to manage multiple devices. The main fields are as follows: - Terminal ID (Primary Key): A unique identifier for each terminal (in VARCHAR(50) format) - User ID (external key): Refers to the primary key of the user information table and establishes an association with the guardian. - Name of person being monitored: Child's name (VARCHAR(100)) - LED lighting permission: A Boolean value (of type BOOLEAN, TRUE = permitted, FALSE = not permitted) indicating the ON / OFF status of the LED lighting unit 16. - Last Updated: The date and time the device information was last updated (in DATETIME format). This table functions as the parent table for the location history table and the emergency notification history table, and is structured to reference various history data via the terminal ID. The LED lighting permission field is immediately updated when the settings are changed from the parent terminal 20, and a push notification is sent to the monitored terminal 10.

[0149] (3) Emergency notification history table (event log table): The system uses the Notification ID as the primary key and the Terminal ID as the foreign key to record emergency notification events when the security alarm is activated in chronological order. It has a 1:N (one-to-many) relationship with the monitored terminal table, meaning multiple notification records can be associated with a single terminal. The main fields are as follows: - Notification ID (Primary Key): An identifier that uniquely identifies each notification event (BIGINT type, suitable for large numbers of records) - Terminal ID (external key): Refer to the primary key of the monitored terminal table. - Activation time: Date and time when the security alarm 17 was activated (DATETIME format) - Location information: Location information at the time the buzzer is activated (text type, including latitude, longitude, address, etc.) This table is used to display emergency notifications on parent terminal 20 and to analyze patterns of emergency occurrences. Information such as the confirmation status flag when a parent checks a notification and the parent ID to which the notification was sent is also recorded.

[0150] (4) Location information history table (positioning data storage table): The history ID is used as the primary key, and the terminal ID as the foreign key to store location information obtained by GPS positioning in chronological order. It has a 1:N (one-to-many) relationship with the monitored terminal table, and a vast number of location history records are linked to a single terminal. The main fields are as follows: - History ID (Primary Key): An identifier that uniquely identifies each positioning event (BIGINT type, supports a large number of records) - Terminal ID (external key): Refer to the primary key of the monitored terminal table. - Latitude: Latitude determined by GPS (DECIMAL(10,7, e.g., 35.6812345) - Longitude: Longitude determined by GPS (DECIMAL(11,7, e.g., 139.7671248) - Positioning time: The date and time when the location information was determined (in DATETIME format) - Battery level: Battery level of the power supply unit 19 during positioning (INT type, 0-100%) This table is used by the parent terminal 20 to display the child's movement history on a map and by algorithms to detect abnormal movement patterns (such as sudden changes in location or movement outside the normal range of activity). Latitude and longitude are stored in DECIMAL format compliant with the WGS84 geodetic system and recorded with a precision of 7 decimal places (approximately 1 cm). The data is retained for a certain period (e.g., 90 days), and old records are automatically deleted.

[0151] (5) Relationships between tables and data flow: As shown in Figure 17, the four tables form a hierarchical structure. The user information table is the top-level parent table, and the monitored device table functions as its child table. Furthermore, the monitored device table is the parent, and the location information history table and the emergency notification history table are positioned as grandchild tables. This hierarchical structure enables the following data flow: - Registration flow: When a parent registers an account, a new record is created in the user information table. Next, when the monitored device 10 is registered, the device information is recorded in the monitored device table and linked to the parent via the user ID. - Positioning flow: When the monitored terminal 10 periodically performs GPS positioning, a new record is added to the location information history table. At the same time, the battery level is also recorded. - Emergency notification flow: When the security alarm 17 is activated, a notification record is created in the emergency notification history table, and the activation time and location information are recorded. This information is immediately sent to the parent terminal 20. - Configuration change flow: When the parent device 20 changes the LED lighting permission information, the LED lighting permission field in the monitored device table is updated, and the changes are notified to the monitored device 10 via push notification.

[0152] (6) Technical basis for database design: The table structure described above is based on the following design principles. - Elimination of data redundancy through normalization: By separating parent information, device information, and history data into separate tables, data duplication is prevented and storage efficiency is improved. - Referential integrity guaranteed by foreign key constraints: All dependent tables reference parent tables via foreign keys, preventing references to non-existent device IDs or parent IDs. The CASCADE DELETE function of the relational database management system (RDBMS) automatically deletes associated device information and history data when a parent withdraws from the service. - Appropriate design of 1:N relationships: The 1:N relationships between the user information table and the monitored device table, and between the monitored device table and the location information history table / emergency notification history table, enable one parent to monitor multiple children and allow for the accumulation of vast amounts of historical data from a single device. - Ensuring scalability: The location history table employs a time-series database design pattern, maintaining linear performance as the amount of data increases through a BIGINT primary key and index optimization. The emergency notification history table is built with a similar design philosophy. - Data type optimization: By using the DECIMAL type for latitude and longitude, floating-point arithmetic errors are eliminated, enabling accurate recording and retrieval of location information. In addition, the use of the BOOLEAN type for managing LED lighting permissions enables efficient storage with 1 bit.

[0153] According to the present invention, even when multiple control conditions are met simultaneously, a unique operation is determined based on a clear priority order, thus providing the following benefits.

[0154] This hierarchical priority control allows for proper management of battery operation and function priorities while maximizing the reliability and predictability of safety responses under any circumstances.

[0155] Problems with the conventional technology and unexpected effects of the present invention Conventional monitoring devices, even those equipped with multiple functions (LED lighting, security alarm, GPS positioning, etc.), had the following problems because each function operated independently. (1) If the security alarm is activated while the parent or guardian has set the LED lighting to OFF, the LED will not light up (visibility in an emergency will not be ensured). (2) If a child turns on the LED light locally and a parent remotely turns it off, it is unclear which command takes precedence (unpredictability of operation). (3) If the security alarm is activated when the battery level is low, the LED light will not operate, and visibility in an emergency will not be ensured. (4) Leaving the LED lights on all the time will cause them to stay lit even during the day or when stationary, wasting battery power. The hierarchical priority control (B>P>F>M>R) of the present invention yields the following unexpected effects: Effect 1: Ensuring reliable visibility in emergencies The first priority control (B: activation of the security alarm) takes top priority, ensuring that the LED light flashes rapidly (second mode) whenever the security alarm is activated, regardless of parental settings, battery level, sensor results, or any other conditions. This achieves a high level of reliability that was not possible with conventional technology, guaranteeing visibility in emergencies under any circumstances. Effect 2: Predictability and unambiguity of actions By clearly defining a five-tiered priority system (B>P>F>M>R), the operation is uniquely determined even when multiple control conditions are met simultaneously. For example, even if parental permission (P) is OFF, the LED will light up if the child performs a local operation (F), but if the security alarm (B) is activated in that state, it will immediately switch to rapid flashing. In this way, all state transitions are clear, making the operation predictable for parents, children, and system administrators alike. Effect 3: Optimization of battery operation Second-priority control (P: parental permission + sensor detection) automatically turns on the LED lights only when truly necessary, such as at night and while moving, preventing unnecessary power consumption during the day or when stationary. Furthermore, fourth-priority control (M: automatic shut-off when stationary) and fifth-priority control (R: power-saving mode when battery level is low) enable gradual function restrictions according to the remaining battery level. This multi-stage control achieves approximately 2 to 3 times the continuous operating time compared to the simple ON / OFF control of conventional technology. Effect 4: Realization of fail-safe design In the fifth priority control (R), the device switches to power-saving mode when the battery level is below 30% and to emergency mode when it is below 10%, gradually restricting functions while maintaining the most important security function (security buzzer + LED flashing) until the very end. In conventional technology, when the battery level drops, all functions either stop or functions are uniformly restricted, which posed a risk of the most essential function being unavailable in an emergency. With the priority control of the present invention, the most important function, "LED flashing when the security buzzer is activated," is reliably operated even just before the battery runs out.

[0156] Motivation and technical significance of design selection The five-tiered priority order (B>P>F>M>R) in this embodiment is determined based on the following design philosophy. (1) First priority: Reason for prioritizing the activation of the security alarm (B) Ensuring child safety requires improved visibility in emergencies. Since a security alarm activating indicates a high probability of a child facing actual danger, the LED light should be activated with priority over any other factors (parental settings, battery level, sensor detection, etc.). This priority setting ensures reliable visibility in emergencies. (2) Second priority: Reasons for prioritizing parental permission (P) over the third priority local operation (F) If a child accidentally leaves the LED light on for an extended period, the battery will drain rapidly, posing a risk of rendering more critical functions such as location tracking and the security alarm unusable. Prioritizing remote parental control over local operation by children ensures proper battery management and stable function operation. However, third-priority control allows children to temporarily (for 10 minutes) turn on the LED light through local operation, thus ensuring their autonomy. (3) Fourth priority: Technical significance of automatic shut-off (M) in stationary state When children arrive at school and remain stationary in their classrooms, LED lighting is unnecessary. An accelerometer detects this stationary state and automatically switches off the LED lights, reducing battery consumption without manual intervention from parents or children. This automatic control achieves a balance between usability and battery efficiency. (4) Fifth priority: Design rationale for low battery power saving mode (R) When the battery level is low, operating all functions normally would rapidly deplete the battery, rendering even the most important security function unusable. The fifth priority control system gradually limits functions according to the battery level (power-saving mode below 30%, emergency mode below 10%), while ensuring that the LED flashing when the security alarm is activated remains functional. This design maintains emergency response capabilities even just before the battery runs out. Thus, the five-tiered priority order is determined based on a clear design philosophy of "prioritizing safety in emergencies while balancing battery operation and functional stability during normal use," and it exhibits superior technical effectiveness compared to conventional simple ON / OFF control or control methods with ambiguous priorities.

[0157] The inventive significance of hierarchical priority control The five-tier priority control (B>P>F>M>R) of the present invention represents a significant technological advancement over the prior art in the following respects. (1) Clear hierarchy of priorities In conventional technology, even when multiple control conditions exist, their priority is often not clearly defined, making the operation unclear when conditions conflict. In this invention, five control conditions are hierarchically structured with clear priority, so that the operation is uniquely determined under any circumstances. This hierarchical structure makes the system's operation predictable and improves reliability. (2) Prioritization based on urgency The five-tiered priority system is determined based on the urgency and importance of each control condition. The most urgent condition, activation of the security alarm (B), is given the highest priority, followed by parental control (P), operation by the child (F), automatic control (M), and fail-safe (R). This priority system ensures both reliable response in emergencies and appropriate operation during normal times. (3) Clarity of state transitions The five-tiered priority control clearly defines the system's state transitions. For example, if a security alarm is activated while the system is in the second priority control state (LED light on with parental permission), it immediately switches to the first priority control state, and the LED light switches to rapid flashing. Because all state transitions are clearly defined in this way, the system's operation becomes predictable. (4) Scalability and maintainability By adopting a hierarchical priority control system, it becomes easy to incorporate new control conditions into the existing priority structure, even if they are added in the future. For example, when adding a new sensor (temperature sensor, humidity sensor, etc.), simply placing its control condition at the appropriate priority level allows for functional expansion while maintaining the overall system consistency.

[0158] Improvement of computer capabilities The hierarchical priority control of this embodiment improves the functionality of the computer system from the following perspectives: (1) Reduced processing load: By pre-defining five levels of priority, the control unit 11 can determine its operation through simple priority judgment without having to perform complex conditional branching. This reduces the processing load on the CPU, resulting in reduced power consumption and improved response speed. (2) Optimization of communication volume: In fifth priority control (power saving mode / emergency mode), the transmission interval of location information is dynamically adjusted according to the remaining battery level (normal 1 minute → power saving 5 minutes → emergency 15 minutes). This reduces the operating time of the communication module and optimizes both battery consumption and network traffic. (3) Data structure improvements: In the server 30's database, LED lighting permission information is stored for each monitored terminal 10, enabling centralized management and consistency of the status even when multiple guardians are monitoring the same person. (4) Improved real-time performance: In the first priority control, the moment the activation of the security buzzer is detected, all other processes are interrupted and the LED flashing begins. This priority interrupt mechanism minimizes response delay in emergencies and ensures real-time performance.

[0159] User interface improvements This embodiment improves the user interface from the following perspectives: (1) Prevention of accidental operation: Since the second priority control (parental permission) takes precedence over the third priority control (local operation), the LED light will not remain ON even if a child accidentally presses the control unit 18. This prevents operation contrary to the parent's intentions. (2) Improved visibility: By clearly distinguishing the light emission patterns of the LED lighting unit 16 between a first mode (slow blinking) and a second mode (high-speed flashing), people in the vicinity can instantly determine whether it is a normal situation or an emergency. This visual differentiation improves the likelihood of detection in emergencies. (3) Reduced operational burden: On the settings screen of the parent terminal 20, the setting is completed simply by switching the LED lighting permission ON / OFF with a slide switch. By eliminating complex menu operations and confirmation screens, the operational burden is reduced, making it easy for elderly parents to use. (4) Intuitive understanding of status: On the main screen of the parent terminal 20, the current location of the monitored terminal 10 is displayed on a map with a marker, and the status of the LED lighting (ON / OFF) is also visualized with an icon. This allows the parent to understand the child's situation at a glance.

[0160] The main terms used in this specification are defined as follows: "Predetermined normal operating conditions": In second priority control, this refers to the conditions for causing the LED lighting unit 16 to emit light in the first mode. Specifically, it refers to the conditions that satisfy all of the following: (1) the LED lighting permission information received from the guardian terminal 20 via the server 30 is ON, (2) the illuminance sensor 15a detects darkness of a predetermined value (e.g., 50 lux) or less, and (3) the acceleration sensor 15b detects movement. However, depending on the embodiment, it may include only some of these conditions. "First Embodiment": This refers to the normal light emission pattern of the LED lighting unit 16. Specifically, it is a slow flashing pattern that repeatedly turns on and off at intervals of approximately 0.5 to 2 seconds. This pattern is optimized to allow people in the vicinity to recognize the presence of a child while suppressing battery consumption. The flashing period can be adjusted according to the embodiment. "Second Embodiment": This refers to the emergency light emission pattern of the LED lighting unit 16. Specifically, it is a high-speed flashing pattern that repeatedly turns on and off with a cycle of approximately 0.1 to 0.3 seconds. This pattern is clearly distinguishable from the first embodiment and is intended to immediately alert people in the vicinity to an emergency. The flashing cycle can be adjusted according to the embodiment. Distinction between "flashing" and "blinking": In this specification, the first type of light emission pattern is referred to as "flashing," and the second type of light emission pattern is referred to as "blinking." "Flashing" refers to on and off at a relatively slow cycle (0.5 seconds to 2 seconds), while "blinking" refers to on and off at a faster cycle (0.1 seconds to 0.3 seconds). This distinction allows for a clear identification of the light emission patterns for normal and emergency situations. "Control Unit": This is a microcomputer including a CPU, and it has the function of controlling the overall operation of the monitored terminal 10 by executing the control program stored in the memory unit 12. Hardware-wise, the control unit 11 is implemented as a microcomputer including a CPU (Central Processing Unit), RAM (Random Access Memory), ROM (Read Only Memory), etc. The CPU executes various control processes, including the five-tier priority control described later, by loading the control program stored in ROM onto the RAM and executing it.

[0161] 7. Variations and combinations Although embodiments of the present invention have been described above, the present invention is not limited to the above embodiments. The components of the above embodiments can be combined or omitted as appropriate. Furthermore, new technical features can be formed by appropriately combining the technical features of each embodiment disclosed herein.

[0162] For example, the monitored terminal 10 may be equipped with positioning means other than a GPS module (e.g., positioning based on the location information of a Wi-Fi access point, positioning based on the location information of a mobile phone base station, etc.). Additionally, the sensor unit 15 may include additional sensors such as a temperature sensor, humidity sensor, and barometric pressure sensor.

[0163] Furthermore, the light emission patterns of the first and second embodiments are not limited to the examples described above, and other flashing or blinking patterns may be used. For example, a continuous lighting pattern may be used as the first embodiment and a flashing pattern as the second embodiment. The important thing is that the first and second embodiments are clearly distinguishable.

[0164] Furthermore, the order of the five-tier priority control is not limited to the example above (B>P>F>M>R) and may be changed depending on the application and requirements. For example, the order of the second and third priorities may be swapped to give priority to local operation by children over remote control by parents.

[0165] Furthermore, each component, function, and processing step described in the above embodiment can be combined as appropriate, within the limits of what is technically consistent. It is also possible to divide an element described as a single component into multiple components, or conversely, to integrate an element described as multiple components into a single component.

[0166] [summary] (1) General tasks [General tasks] One of the objectives of this invention is to solve technical problems related to ensuring the safety of the person being monitored. Specifically, the objective is to determine a unique operation based on clear priorities, even when multiple control conditions are met simultaneously, thereby achieving both reliable visibility in emergencies and appropriate battery management during normal operation. One of the objectives of this invention is to realize LED lighting control according to the situation. One of the objectives of this invention is to ensure the safety of the person being monitored while also achieving convenience and battery efficiency in the monitoring device.

[0167] Issues related to [Appendix 1] One of the objectives of the present invention is to provide a monitoring system that enables optimal LED lighting control according to the situation, based on a predetermined and clear priority order, even when multiple control conditions are met simultaneously. [Note 1] A monitoring system comprising a monitored terminal, a guardian terminal, and a server capable of communicating with the monitored terminal and the guardian terminal via a network, wherein the monitored terminal comprises a security buzzer, an LED lighting unit, a server communication unit, and a control unit, and the control unit causes the LED lighting unit to illuminate in a first mode when predetermined normal operating conditions are met, and when the security buzzer is activated, causes the LED lighting unit to illuminate in a second mode regardless of whether the predetermined normal operating conditions are met. [Effects of Appendix 1] This configuration ensures that the LED lighting illuminates reliably when the security alarm is activated, regardless of the predetermined normal operating conditions, thus ensuring visibility in emergencies. Furthermore, even when multiple control conditions conflict, a unique operation is determined based on clear priorities, making the system's operation predictable and improving reliability.

[0168] Issues related to [Appendix 2] One of the objectives of this invention is to provide a monitoring system that allows parents to remotely manage the operation of LED lighting appropriately. [Note 2] A monitoring system as described in Appendix 1, wherein the guardian terminal is capable of transmitting LED lighting permission information to the monitored terminal via the server, and the predetermined normal operating conditions include the LED lighting permission information received from the guardian terminal via the server being ON. [Effects of Appendix 2] This configuration allows parents to control the operation of the LED lighting on the monitored device from a remote location such as their home or workplace. This enables flexible operation tailored to the situation, such as turning on the LED lighting only when returning home at night.

[0169] Issues related to [Appendix 3] One of the objectives of this invention is to provide a monitoring system that optimizes battery consumption by automatically turning on LED lighting only when truly necessary (at night and while moving). [Note 3] A monitoring system as described in Appendix 2, wherein the monitored terminal further comprises an illuminance sensor and an acceleration sensor, and the predetermined normal operating conditions include the LED lighting permission information being ON and the determination results of the illuminance sensor and the acceleration sensor satisfying predetermined conditions. [Effects of Appendix 3] This configuration allows the LED lighting to automatically turn on only when truly needed, such as at night and while moving. By automatically turning off during the day or when stationary, unnecessary battery consumption is suppressed, enabling long periods of continuous operation.

[0170] Issues related to [Appendix 4] One of the objectives of this invention is to provide a monitoring system that can optimize battery consumption by automatically distinguishing between daytime and nighttime and automatically turning on LED lights only when moving at night. [Note 4] A monitoring system as described in Appendix 3, wherein the predetermined conditions are that the illuminance sensor detects darkness below a predetermined value and the acceleration sensor detects movement. [Effects of Appendix 4] This configuration allows the LED lights to automatically turn on only when truly necessary (such as during nighttime movement) by determining both ambient light and movement status. This effectively prevents unnecessary battery consumption during the day or when stationary.

[0171] Issues related to [Appendix 5] One of the objectives of the present invention is to provide a monitoring system that offers a light emission mode that can be clearly distinguished between normal and emergency situations, thereby enabling people in the vicinity to immediately recognize an emergency. [Note 5] A monitoring system as described in Appendix 1, wherein the first embodiment is a mode in which the LED lighting unit is turned on or blinks, and the second embodiment is a mode in which the LED lighting unit blinks in a blinking pattern different from that of the first embodiment. [Effects of Appendix 5] This configuration allows for a clear distinction between normal illumination / flashing (first mode) and emergency flashing (second mode). The different flashing patterns in emergencies allow people in the vicinity to immediately recognize the emergency and respond quickly.

[0172] Issues related to [Appendix 6] One of the objectives of this invention is to provide a monitoring system that allows children to temporarily turn on LED lights at their own discretion. [Note 6] A monitoring system as described in Appendix 2, wherein the monitored terminal further comprises an operating unit, and the predetermined normal operating condition includes the detection of a predetermined operation on the operating unit. [Effects of Appendix 6] This configuration allows children to turn on the LED lights themselves when walking on dark paths. This means that children can use the LED lights immediately when they feel they need them, without having to wait for remote control from their guardians.

[0173] Issues related to [Appendix 7] One of the objectives of this invention is to provide a monitoring system that enables reliable manual operation while preventing erroneous operation. [Note 7] A monitoring system as described in Appendix 6, wherein the predetermined operation is a double-tap operation on the operation unit. [Effects of Appendix 7] This configuration, by requiring a clear operation such as a double tap, prevents accidental errors while achieving usability that even children can easily perform.

[0174] Issues related to [Appendix 8] One of the objectives of the present invention is to provide a monitoring system that can appropriately manage the on-time of LED lighting controlled locally by children. [Note 8] A monitoring system as described in Appendix 7, wherein the control unit illuminates the LED lighting unit for a predetermined time when it detects a predetermined operation on the operation unit. [Effects of Appendix 8] With this configuration, when a child double-tap, the LED light will turn on for a predetermined time (for example, 5 minutes), and then automatically turn off after that time has elapsed. This allows the LED light to be used only when needed, while conserving battery power.

[0175] Issues related to [Appendix 9] One of the objectives of the present invention is to provide a monitoring system that can reduce battery consumption by automatically turning off LED lighting when the system remains stationary. [Note 9] A monitoring system as described in Appendix 3, wherein the control unit, when it detects that the stationary state has continued for a predetermined period of time using the acceleration sensor, turns off the LED lighting unit even if the predetermined normal operating conditions are met. [Effects of Appendix 9] This configuration allows the LED lights to automatically turn off when a child arrives at school and remains stationary. This prevents unnecessary battery consumption without requiring manual operation by parents or children.

[0176] Issues related to [Appendix 10] One of the objectives of the present invention is to provide a monitoring system that can reliably maintain LED lighting operation when a security alarm is activated, even when the battery level is low. [Note 10] A monitoring system as described in Appendix 1, wherein the control unit suppresses the illumination of the LED lighting unit when the battery level is below a predetermined value, even if the predetermined normal operating conditions are met, and illuminates the LED lighting unit in the second manner only when the security buzzer is activated. [Effects of Appendix 10] This configuration ensures that the most important security function (LED illumination when the security buzzer is activated) is maintained even when the battery level is low. By limiting the operation of the LED illumination during normal use, battery consumption is suppressed, allowing for preparedness in emergencies.

[0177] Issues related to [Appendix 11] One of the objectives of the present invention is to provide a monitoring system that can determine a unique operation based on a clear hierarchical priority, even when the control conditions for the security alarm, battery level, and stationary state are intricately competing with each other. [Note 11] A monitoring system as described in Appendix 10, wherein the monitored terminal further comprises an acceleration sensor, and the control unit, when the security buzzer is activated, illuminates the LED lighting unit in the second manner regardless of whether the battery level is below a predetermined value and the result of the detection of a stationary state by the acceleration sensor, when the security buzzer is activated and the battery level is below a predetermined value, suppresses the illumination of the LED lighting unit even if the predetermined normal operating conditions are met, and when the security buzzer is not activated and the battery level exceeds a predetermined value, and the stationary state continues for a predetermined time, turns off the LED lighting unit even if the predetermined normal operating conditions are met. [Effects of Appendix 11] This configuration enables a clear hierarchical priority control system: (1) activation of the security alarm is the highest priority, (2) power saving control based on battery level is the next priority, and (3) light-off control when the device is stationary is the final priority. Because the operation is uniquely determined under any circumstances, predictability and reliability are ensured, allowing parents to use the device with peace of mind.

[0178] Issues related to [Appendix 12] One of the objectives of this invention is to provide a monitoring system that integrates a location-based tracking function with visibility ensured by LED lighting. [Note 12] A monitoring system as described in Appendix 1, wherein the monitored terminal further comprises a positioning unit, and the positioning unit is capable of transmitting location information determined by the positioning unit to the guardian terminal via the server. [Effects of Appendix 12] This configuration, combining visibility provided by LED lighting with location tracking via GPS, achieves a more robust level of safety. Parents can check their child's current location in real time.

[0179] Issues related to [Appendix 13] One of the objectives of this invention is to provide a monitoring system that can maintain its last configured state and continue operating even if communication is interrupted. [Note 13] A monitoring system as described in Appendix 2, wherein the monitored terminal, when unable to communicate with the server, retains the last received LED lighting permission information, and continues to control the LED lighting unit using the retained permission information until new LED lighting permission information is received from the guardian terminal after communication is restored. [Effects of Appendix 13] This configuration allows the system to continue operating based on the last settings even when communication is interrupted, ensuring stable operation even in places with unstable communication, such as tunnels and underground.

[0180] Issues related to [Appendix 14] One of the objectives of the present invention is to provide a monitoring system that can prevent unexpected operation by reverting to a safe mode of operation in the event of a long-term communication interruption. [Note 14] A monitoring system as described in Appendix 13, wherein if the monitored terminal is unable to communicate with the server for a predetermined period of time or longer, the monitoring system restores the LED lighting permission information to a default value. [Effects of Appendix 14] This configuration allows the device to revert to a safe default setting (e.g., OFF) in the event of a prolonged communication interruption, preventing unexpected behavior. It also prevents the device from continuing to operate in a manner contrary to the parent's intentions.

[0181] Issues related to [Appendix 15] One of the objectives of this invention is to provide a monitoring system that can be attached to the shoulder straps of a school bag to maximize the visibility of LED lighting and improve its practicality. [Note 15] A monitoring system as described in Appendix 1, wherein the monitored terminal has a shape that can be attached to the shoulder strap of a school bag. [Effects of Appendix 15] This configuration, when attached to the shoulder strap, positions the LED light at shoulder height, making it easily visible to drivers and maximizing traffic safety. Furthermore, it is less likely to be lost and can be carried by children without conscious effort.

[0182] Issues related to [Appendix 16] One of the objectives of this invention is to achieve broader protection of rights by including the operation method of the monitoring system within the scope of the rights. [Note 16] An information processing method comprising: causing an LED lighting unit to illuminate in a first mode when the processor satisfies predetermined normal operating conditions; and causing the LED lighting unit to illuminate in a second mode when a security buzzer is activated, regardless of whether the predetermined normal operating conditions are met. [Effects of Appendix 16] This configuration allows for broader protection of rights by including the entire system's operating procedures within the scope of the claim, provided it is protected as a method claim.

[0183] Issues related to [Appendix 17] One of the objectives of this invention is to realize the protection of rights at the monitoring terminal itself, which is the core of the monitoring system. [Note 17] A monitored terminal comprising a security buzzer, an LED lighting unit, a server communication unit, and a control unit, wherein the control unit causes the LED lighting unit to illuminate in a first mode when predetermined normal operating conditions are met, and when the security buzzer is activated, the LED lighting unit illuminates in a second mode regardless of whether the predetermined normal operating conditions are met. [Effects of Appendix 17] This configuration allows for the exercise of rights against the manufacture and sale of the monitored terminal by protecting it as an equipment claim.

[0184] Issues related to [Appendix 18] One of the objectives of this invention is to enable the exercise of rights regarding the distribution and sale of software by protecting the control logic as a program. [Note 18] A program that causes a computer equipped with a security alarm, an LED lighting unit, and a server communication unit to perform the following processes: when predetermined normal operating conditions are met, the LED lighting unit to emit light in a first mode; and when the security alarm is activated, the LED lighting unit to emit light in a second mode, regardless of whether the predetermined normal operating conditions are met. [Effects of Appendix 18] This configuration allows for the enforcement of rights regarding the distribution and sale of software by protecting it as a program claim, and also prevents infringement through firmware updates and other means. [Explanation of Symbols]

[0185] 1. Monitoring System 10. Monitoring device 11 Control Unit 12 Storage section 13 Server Communication Unit 14 Positioning Unit 15 Sensor section 15a Illuminance sensor 15b Accelerometer 16 LED lighting section 17. Personal safety alarm 18 Control section 19 Power supply section 20 Parental devices 21 Control Unit 22 Memory section 23 Display section 24 Control section 25 Server Communication Section 30 servers 31 Control Unit 32 Databases 33 Communications Department 40 Networks 50 school bags 51 children 52 Shoulder Straps

Claims

1. A monitoring system comprising a monitored terminal, a guardian terminal, and a server capable of communicating with the monitored terminal and the guardian terminal via a network, The monitored terminal comprises a security buzzer, an LED lighting unit, a server communication unit, and a control unit. The control unit, When the predetermined normal operating conditions are met, the LED lighting unit is made to emit light in the first mode. When the security buzzer is activated, the LED lighting unit is made to illuminate in the second mode, regardless of whether the predetermined normal operating conditions are met. A monitoring system characterized by the following features.

2. A monitoring system according to claim 1, The guardian terminal is capable of transmitting LED lighting permission information to the monitored terminal via the server. The predetermined normal operating conditions include the LED lighting permission information received from the parent terminal via the server being ON. A monitoring system characterized by the following features.

3. A monitoring system according to claim 2, The monitored terminal further comprises an illuminance sensor and an acceleration sensor. The predetermined normal operating conditions include the LED lighting permission information being ON and the determination results of the illuminance sensor and the acceleration sensor satisfying predetermined conditions. A monitoring system characterized by the following features.

4. A monitoring system according to claim 3, The predetermined conditions are that the illuminance sensor detects darkness below a predetermined value, and the acceleration sensor detects movement. A monitoring system characterized by the following features.

5. A monitoring system according to claim 1, The first embodiment is an embodiment in which the LED lighting unit is turned on or blinked, The second embodiment is one in which the LED lighting unit is blinked in a blinking pattern different from that of the first embodiment. A monitoring system characterized by the following features.

6. A monitoring system according to claim 2, The aforementioned monitored terminal further comprises an operating unit, The predetermined normal operating conditions include the detection of a predetermined operation on the operating unit. A monitoring system characterized by the following features.

7. A monitoring system according to claim 6, The aforementioned predetermined operation is a double-tap operation on the operating unit. A monitoring system characterized by the following features.

8. A monitoring system according to claim 7, When the control unit detects a predetermined operation on the operation unit, it lights up the LED lighting unit for a predetermined time. A monitoring system characterized by the following features.

9. A monitoring system according to claim 3, When the control unit detects that the stationary state has continued for a predetermined period of time using the acceleration sensor, it turns off the LED lighting unit even if the predetermined normal operating conditions are met. A monitoring system characterized by the following features.

10. A monitoring system according to claim 1, The control unit suppresses the illumination of the LED lighting unit even if the predetermined normal operating conditions are met when the battery level is below a predetermined value, and illuminates the LED lighting unit in the second mode only when the security buzzer is activated. A monitoring system characterized by the following features.

11. A monitoring system according to claim 10, The monitored terminal further includes an acceleration sensor, The control unit, When the security buzzer is activated, regardless of whether the battery level is below a predetermined value or the result of the stationary state detection by the acceleration sensor, the LED lighting unit is made to emit light in the second mode. If the security buzzer is not activated and the battery level is below a predetermined value, the illumination of the LED lighting unit is suppressed even if the predetermined normal operating conditions are met. If the security buzzer is not activated and the battery level exceeds a predetermined value, and the stationary state continues for a predetermined time, the LED lighting unit will be turned off even if the predetermined normal operating conditions are met. A monitoring system characterized by the following features.

12. A monitoring system according to claim 1, The monitored terminal further comprises a positioning unit, The positioning unit can transmit the position information it has determined to the guardian terminal via the server. A monitoring system characterized by the following features.

13. A monitoring system according to claim 2, The aforementioned monitoring terminal is If communication with the server is impossible, the last received LED lighting permission information is retained. After communication is restored, control of the LED lighting unit will continue using the retained permission information until new LED lighting permission information is received from the guardian terminal. A monitoring system characterized by the following features.

14. A monitoring system according to claim 13, If the monitored terminal is unable to communicate with the server for a predetermined period of time or longer, it will reset the LED lighting permission information to its default value. A monitoring system characterized by the following features.

15. A monitoring system according to claim 1, The monitoring device has a shape that can be attached to the shoulder strap of a school bag. A monitoring system characterized by the following features.

16. The processor, When the predetermined normal operating conditions are met, the LED lighting unit is made to emit light in the first mode. When the security alarm is activated, the LED lighting unit is illuminated in the second mode, regardless of whether the predetermined normal operating conditions are met. Information processing methods.

17. A monitoring terminal comprising a security alarm, an LED lighting unit, a server communication unit, and a control unit, The control unit, When the predetermined normal operating conditions are met, the LED lighting unit is made to emit light in the first mode. When the security buzzer is activated, the LED lighting unit is made to illuminate in the second mode, regardless of whether the predetermined normal operating conditions are met. A monitoring terminal characterized by the following features.

18. A computer equipped with a security alarm, an LED lighting unit, and a server communication unit, A process to cause the LED lighting unit to emit light in a first mode when predetermined normal operating conditions are met, When the security buzzer is activated, regardless of whether the predetermined normal operating conditions are met, the LED lighting unit is made to emit light in the second mode, A program characterized by causing the execution of a specific action.

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