Smart watch for judicial supervision, judicial supervision system and charging device of judicial supervision system

Abstract

The embodiment of the utility model discloses an intelligent watch for judicial supervision, a judicial supervision system and a charging device of the judicial supervision system, a main body part is designed to be a watchband, and a first connecting hole is arranged on the watchband and is used for accommodating two first conductive wires led out from the main body; the cover plate part is provided with a second connecting hole, a nut electrically connected to the tail end of the first conductor wire is embedded in the second connecting hole, and the lower end face of the second connecting hole is designed to be lower than the lower surface of the cover plate. In addition, the diameter of the end face of the U-shaped connecting piece is smaller than or equal to that of the first connecting hole and larger than that of the second connecting hole, so that the U-shaped column can penetrate through the first connecting hole and be tightly attached to the second connecting hole in the lower surface of the cover plate. The U-shaped connecting piece is in threaded connection with the nuts and the screw holes in sequence through the screws, so that the U-shaped connecting piece is connected with the two first conductive wires, and the U-shaped connecting piece is effectively prevented from being cut off or damaged by a wearer. And through the built-in various monitoring modules, the positioning information, health state monitoring and behavior analysis of the wearer are realized, and the portability and practicability of the equipment are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of intelligent wearing equipment especially, a kind of smart watch for judicial supervision, judicial supervision system and its charging device. BACKGROUND

[0002] In the traditional judicial field, for some supervised personnel, such as the custody personnel of prison, or some medical parole personnel, or some persons under house arrest, we prevent these personnel from leaving the established area by means of regular monitoring by police or artificial nursing. With the progress of 4G and sensor technology, some judicial bracelets gradually appear. These bracelets are often based on 4G communication technology, use built-in GPS or WiFi positioning to track regularly, and the watchband has a tamper-proof device. After these personnel carry these devices, the purpose of regular supervision can be achieved, without artificial supervision and nursing.

[0003] However, such watches also have problems such as being unable to track and monitor such users well in the room and cutting the watchband when the watch is placed in a conductive liquid, resulting in the device being unable to be monitored after being cut. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model embodiment proposes a smart watch for judicial supervision, a judicial supervision system and a charging device thereof,

[0005] The smart watch for judicial supervision comprises a main body, a first watchband connected to the main body, a first connecting hole is formed in the first watchband, two first conductive wires are embedded in the first connecting hole and led out from the main body, a cover plate, a second connecting hole is formed in the cover plate, a nut is embedded in the second connecting hole and electrically connected to the end of the first conductive wire, the lower end surface of the nut is lower than the lower surface of the cover plate, a U-shaped connecting piece made of conductive material, a screw hole is formed in the end surface of the U-shaped column corresponding to the end surface, the diameter of the end surface is less than or equal to the diameter of the first connecting hole and greater than the diameter of the second connecting hole, the U-shaped column passes through the first connecting hole and abuts against the lower surface of the cover plate at the position of the second connecting hole, a screw is screwed into the nut and the screw hole in turn to connect the two first conductive wires through the U-shaped connecting piece, an ADC acquisition module is arranged in the main body and electrically connected to the beginning of the two first conductive wires, the resistance change of the first conductive wire is monitored in real time, a processor is arranged in the main body and electrically connected to the ADC acquisition module and judges the state of the watch according to the resistance change.

[0006] Further, it further comprises a second watchband, a second conductive wire loop is embedded in the second watchband along the length direction and led out from the main body, the two ends of the second conductive wire in the main body are electrically connected to the ADC acquisition module, and the ADC acquisition module is further used to monitor the resistance change of the second conductive wire in real time.

[0007] Further, the first conductive wire end is embedded in the cover plate and directly welded to the nut; or, a metal sheet is embedded on the cover plate, one end of the metal sheet is embedded in the cover plate and electrically connected to the outer side of the nut, the other end is exposed and laid on the lower surface of the cover plate and electrically connected to the first conductive wire end.

[0008] Further, the watch further comprises a PCB bottom plate fixed in the main body, an intermediate frame plate on which an NB-IOT antenna, a GPS antenna and a Bluetooth antenna are printed, metal struts between the PCB bottom plate and the intermediate frame plate for realizing signal connection between the intermediate frame plate and the PCB bottom plate.

[0009] Further, the PCB bottom plate is provided with an NB-IOT communication module for sending temperature monitoring and blood oxygen monitoring data to the cloud in a timely manner.

[0010] Further, the PCB bottom plate is provided with a Bluetooth positioning module and a GPS positioning module.

[0011] Further, the watch further comprises an alarm unit for triggering an alarm signal when the watch state is abnormal.

[0012] Further, the top surface of the watch is provided with a charging feed point.

[0013] Correspondingly, the utility model embodiment further provides a supervision system, comprising a plurality of Beacon devices;With the Beacon device communication connection's smart watch.

[0014] Further, the utility model embodiment further provides a charging device, comprising: the warehouse body of containing the charging battery, the warehouse body four corners are extended to the same side and form the clasp in the smart watch bottom four corners of the PCB bottom plate provided with the Bluetooth positioning module and GPS positioning module The clasp hook, the electrode contact provided with the charging feed point is arranged on the bottom surface of the warehouse body, and the electrode contact is electrically connected to the charging interface of the charging battery.

[0015] The utility model embodiment provides a smart watch for judicial supervision, a judicial supervision system and a charging device thereof, the first conductive wire connected with the ADC acquisition module is arranged in the watch buckle, combined with the U-shaped connecting piece, the two first conductive wire loops are conducted through the nut of the screw passing through the first connecting hole into the U-shaped column, so that the wearer is prevented from being cut off or damaged, and the smart watch also has a plurality of function modules, the wearer is managed and monitored in multiple aspects, the portability and practicality of the equipment are ensured, the state of the watch is monitored, abnormal conditions can be found in time, and the safety of the wearer is effectively ensured. Meanwhile, the movable charging device enables the watch to be charged without connecting line, greatly improving the convenience of the wearer. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is the whole structure explosion schematic diagram of the embodiment of the utility model.

[0017] Figure 2 is the whole structure schematic diagram of the embodiment of the utility model.

[0018] Figure 3 is the PCB bottom plate local structure schematic diagram of the embodiment of the utility model.

[0019] Figure 4 is the main body local structure schematic diagram of the embodiment of the utility model.

[0020] Figure 5 is the module schematic diagram of the PCB bottom plate of the embodiment of the utility model.

[0021] Figure 6 is the whole structure explosion schematic diagram of the charging device of the embodiment of the utility model.

[0022] Figure 7 is the structure schematic diagram of the charging device of the embodiment of the utility model.

[0023] Explanation of reference signs

[0024] Main body 1 PCB bottom plate 11 Middle frame plate 12 Charging feed point 13 Battery 14 First watchband 2 First connecting hole 21 Cover plate 3 Second connecting hole 31 U-shaped connecting piece 4 Second watchband 5 Cylinder body 6 Charging battery 61 Claw 62 Electrode contact 63 Specific implementation

[0025] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict, and the utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0026] Please refer to Figures 1-5 the smart watch for judicial supervision of the embodiment of the utility model.

[0027] Embodiment one: basic structure and function realization of smart watch

[0028] The main body 1 is designed as a first watchband 2, which is provided with a first connecting hole 21 for accommodating two first conductive wires drawn from the main body 1. The cover plate 3 is provided with a second connecting hole 31 in which a nut is embedded and electrically connected to the ends of the first conductive wires, and the lower end surface of the nut is designed to be lower than the lower surface of the cover plate 3. In addition, a U-shaped connecting piece 4 made of conductive material is used, and the diameter of the end surface of the U-shaped connecting piece 4 is less than or equal to the diameter of the first connecting hole 21 and greater than the diameter of the second connecting hole 31, so that the U-shaped column can pass through the first connecting hole 21 and tightly abut against the lower surface of the cover plate 3 at the position of the second connecting hole 31. The U-shaped connecting piece 4 is connected to the two first conductive wires by being screwed to the nut and the screw hole in sequence. Inside the main body 1, an ADC acquisition module is arranged, which is electrically connected to the starting ends of the two first conductive wires and is responsible for real-time monitoring of the resistance change of the first conductive wires. The processor is also located inside the main body 1 and is electrically connected to the ADC acquisition module, and determines the working state of the watch according to the resistance change data.

[0029] Specifically, the first connecting hole 21 is provided on the first watchband 2 connected to the main body 1, and the first connecting hole 21 is a hole diameter for limiting and fixing the U-shaped column. The first conductive wires are drawn out from the inside of the main body 1, embedded in the first watchband 2 and extended along the grooves on both sides of the first connecting hole 21, until they are connected to the cover plate 3. The cover plate 3 is arranged on the surface of the first watchband 2, and the U-shaped connecting piece 4 is arranged on the inner side of the first watchband 2. The diameter of the U-shaped column of the U-shaped connecting hole is less than or equal to the diameter of the first connecting hole 21 and greater than the diameter of the second connecting hole 31, so that the U-shaped column can pass through the first connecting hole 21 of the first watchband 2 and be arranged at the position of the second connecting hole 31. The first connecting hole 21 limits the U-shaped column, and the screw hole is arranged in the U-shaped column. The nut of the first connecting hole 21 is aligned with the screw hole of the second connecting hole 31 to form a screw thread channel for screwing. The screw passes through the nut and the U-shaped column in sequence from the surface of the first watchband 2, and the first conductive wires embedded in the nut of the first connecting hole 21 are connected to the U-shaped column through the screw to form a loop in the U-shaped connecting piece 4, thereby realizing the connection of the two first conductive wires. It should be noted that because the nut is embedded in the second connecting hole 31, the U-shaped column cannot pass through the second connecting hole 31 and can only abut against the cover plate 3, and cannot be electrically connected to the nut in the second connecting hole 31. Only by screwing the nut and the U-shaped connecting piece 4 through the nut can a loop be formed for the two first conductive wires.

[0030] The main body 1 is provided with an ADC acquisition module and a processor. The ADC acquisition module is integrated on a circuit board in the main body 1, and the two first conductive wires are respectively connected to test points on the circuit board. The processor analyzes the data transmitted by the ADC acquisition module through an algorithm. The ADC acquisition module can accurately measure the resistance value of the conductive wire to monitor the resistance change and prevent the watchband from being cut or damaged. The processor can identify the wearing state through the change, thereby triggering corresponding supervision measures.

[0031] Embodiment two: integration and monitoring of the second conductive wire

[0032] Integration of the second conductive wire: a second conductive wire loop is embedded in the length direction of the second watchband 5, and both ends are electrically connected to the ADC acquisition module in the main body 1. The ADC acquisition module is also responsible for real-time monitoring of the resistance change of the second conductive wire to realize the monitoring of the second conductive wire. Specifically, the ADC acquisition module also has a second conductive wire corresponding to the direction of the first conductive wire, which is embedded along the length direction of the second watchband 5 and forms a loop. The ADC acquisition module also monitors the resistance value change of the second conductive wire. If an abnormal resistance change is detected, the processor will trigger an alarm mechanism and send an alarm message to the judicial supervision system through the NB-IOT communication module, so that timely measures can be taken.

[0033] Embodiment three: connection method of the conductive wire end and the cover plate 3

[0034] Connection of the conductive wire end: the first conductive wire end can be embedded in the cover plate 3 and directly welded to the nut, or a metal sheet is embedded in the cover plate 3, one end of which is embedded in the cover plate 3 and electrically connected to the outer side of the nut, and the other end is exposed and laid on the lower surface of the cover plate 3 and electrically connected to the first conductive wire end. Different from embodiment one, this embodiment embeds the first conductive wire in the cover plate 3 and directly connects the nut, so that it is not necessary to embed in the cover plate 3, but only to fix the nut on the watch buckle so that the nut is not connected with the U-shaped connecting piece 4. This simplifies the structure and reduces the cost. In this embodiment, a metal sheet can also be embedded in the cover plate 3, one end of which is embedded in the cover plate 3 and exposed below the cover plate 3, so as to weld the first conductive wire and facilitate the electrical connection of the first conductive wire. These two methods aim to further simplify the structure material and reduce the cost while facilitating maintenance in the case of stable connection.

[0035] Embodiment four: communication and positioning module of the smart watch

[0036] Integration of the communication and positioning module: the NB-IOT communication module is arranged on the PCB bottom plate 11, which is used to send temperature monitoring and blood oxygen monitoring data to the cloud at regular intervals. At the same time, the PCB bottom plate 11 is also provided with a Bluetooth positioning module and a GPS positioning module to realize various positioning functions. Specifically, the main body 1 is in turn a shell and a display screen, a middle frame plate 12, a battery 14 and a PCB bottom plate 11. Among them, the PCB bottom plate 11 has a plurality of metal pillars installed on one side corresponding to the middle frame plate 12. The other side of the PCB bottom plate 11 is provided with an ADC acquisition module at the center, which is connected to the conductive wire monitoring resistance. The Bluetooth positioning module, the NB-IOT communication module and the GPS positioning module are arranged above the ADC acquisition module, and the PCB bottom plate 11 is also embedded with a temperature and blood oxygen monitoring module.

[0037] Bluetooth positioning module: This module can actively scan the surrounding Beacon devices to achieve passive positioning.

[0038] ADC acquisition module: 16-bit high-precision ADC is used to collect the resistance changes of the metal wires in the watchband. Even if the watchband is cut and changes from a straight-through metal connection to a conductive liquid connection, the resistance will definitely change during this process, and this change can also monitor the watch being cut.

[0039] NB-IOT communication module: used for the judicial bracelet to send messages to the cloud in a timely manner, including temperature monitoring, blood oxygen monitoring, once the temperature or blood oxygen is abnormal, it will be reported immediately. In addition, when the hand is hit hard or the bracelet is cut, it will also report the abnormality in real time.

[0040] GPS positioning module: used for high-precision positioning outdoors to ensure that the wearer's location information can be tracked in real time when outdoors.

[0041] Temperature and blood oxygen monitoring module: the watch will monitor the body temperature and blood oxygen of the monitored person in real time, and once an abnormality is found, such as a high body temperature or low blood oxygen, an alarm will be sent immediately.

[0042] The bottom of the main body 1 has two windows for installing temperature sensors and blood oxygen sensors, and is sealed by a transparent PC sheet. The sensors can sample the human body through the transparent lens. Once sampling is not possible, it can be determined that the user has not carried the watch, and the watch may have been taken off, thereby triggering an alarm through the NB-IOT communication module.

[0043] In order to improve the performance of the radio frequency antenna, the middle frame plate 12 is buckled on the PCB bottom plate 11, which is connected to the PCB bottom plate 11 through metal pillars. The NB-IOT antenna, GPS antenna, and Bluetooth antenna are printed on the middle frame plate 12 through the printed antenna process. In this way, the antennas are independent on the shell and maintain a certain distance from the PCB bottom plate 11. This layout significantly reduces potential electromagnetic interference, thereby optimizing the signal transmission quality and greatly reducing interference.

[0044] Implementation five: alarm and charging functions of the smart watch

[0045] Integration of alarm unit: an alarm unit is integrated in the watch to trigger an alarm signal when the watch state is abnormal.

[0046] Specifically, after other modules find abnormalities and communicate with the control center through the NB-IOT communication module, subsequent location information needs to be confirmed through the GPS positioning module or the Bluetooth positioning module, and only the approximate location of the watch can be determined through various ways, and corresponding measures cannot be effectively taken. The alarm unit is integrated in the watch, and an audible and visual alarm is sent in the watch where the abnormality occurs, so as to remind the staff to take timely measures. The alarm unit mainly alarms through the function main body 1 of the smart watch, cooperates with the loudspeaker of the smart watch, controls the display screen to emit a specific frequency of flashing light, and simultaneously strengthens the warning through the vibration module, and controls the alarm unit to realize the alarm through the communication of the NB-IOT communication module.

[0047] The charging feeder point is arranged on the top surface of the watch, and is used for connecting the charging device.

[0048] Specifically, the top surface of the main body 1 is provided with a charging feeder point 13 for charging, which is connected with the electrode contact of the charging device to realize the wireless charging function. The user only needs to press the charging device on the watch to start charging, without plugging and unplugging, which is convenient and safe.

[0049] Embodiment six: construction of a judicial supervision system

[0050] Construction of the judicial supervision system: a judicial supervision system including a plurality of Beacon devices is constructed, and a smart watch in communication connection with the Beacon devices.

[0051] Specifically, a plurality of Bluetooth Beacon devices are installed in the supervision area, the Bluetooth Beacon device can be powered for several years by using a single button battery, the Bluetooth Beacon can be pasted on the surface of other objects by 3M glue, so that it can be conveniently deployed, in addition, the Bluetooth Beacon is provided with an acceleration sensor and an anti-disassembly button switch, and once the pasted Beacon is forcibly removed, it will broadcast invalidation. The Beacon device transmits an encrypted broadcast signal every 1 second, and the signal broadcast distance is about 50 meters.

[0052] The judicial watch regularly performs Bluetooth scanning on the Bluetooth Beacon, and once the Beacon of the clock-in point is scanned, it can be considered that the current supervision area is not escaped, and automatic clock-in can be realized, and the clock-in information can be regularly reported to the cloud through the NB-IOT. Based on this technical scheme, the demand for indoor supervision can be met at a very low cost.

[0053] Embodiment seven: design of a charging device for a smart watch

[0054] Please refer to Figures 6-7 , which is a charging device for the judicial supervision of the present embodiment.

[0055] The design of the charging device: the charging device includes a storage body 6 that houses the charging battery 61, and the storage body 6 extends to the same side at the four corners to form a clasp hook 62 that is clamped to the four corners of the bottom of the smart watch. The bottom surface of the storage body 6 is provided with an electrode contact 63 that contacts the charging feed point 13, and the electrode contact 63 is electrically connected to the charging interface of the charging battery 61.

[0056] Specifically, the charging device includes a storage body 6, a charging battery 61, and a circuit board. The storage body 6 includes a top shell and a bottom plate. The storage body 6 of the charging device is provided with a circular chamfered edge. Four columns extend from the four corners of the storage body 6 to the bottom plate. The end of the column extends four clasp hooks 62 with a matching curvature to the four corners of the bottom of the main body 1, so as to be firmly clamped on the four corners of the bottom of the watch. The width of the column gradually decreases along the extension direction, and the end protrudes inward to form a stepped clasp hook 62. The design of the clasp hook 62 not only ensures stable connection with the watch, but also considers the convenience of operation for the user. The bottom plate is a recessed surface that matches the shape of the top of the main body 1 for clamping, and further cooperates with the column and the clasp hook 62 to form a stable clamping structure, ensuring that the user can reliably charge in a moving state. A charging port is provided on one side of the outer surface of the storage body 6. The charging port corresponds to the charging interface inside the storage body 6. A charging indicator light for judging the charging state is also installed on one side of the charging port of the storage body 6. The circuit board of the charging device integrates a charging control chip, an electrode contact 63, and a charging interface. The charging control chip is used to control the charging process and ensure efficient transmission of electrical energy to the built-in battery of the watch. The electrode contact 63 is used to accurately align with the charging feed point 13 of the watch to achieve seamless connection. The charging interface is used for external power supply to charge the charging device. The charging feed point 13 is welded on the circuit board corresponding to the bottom plate direction. The bottom plate is provided with a through hole for the charging contact at the position corresponding to the charging contact. The charging contact penetrates the bottom plate and is exposed on the surface of the bottom plate. By inverting the charging device on the watch, the watch is provided with a smooth transition to a raised stepped structure around the main body 1. The stepped structure forms a significant height difference. The charging device completely hooks the four feet of the clasp hook 62 on the stepped structure, so that the contact surface of the charging device can be closely fitted. The charging contact is inserted into the charging feed point 13 of the watch, thereby completing the docking of the charging process. The charging interface is located on one side of the circuit board corresponding to the charging battery 61. It is connected to the external power supply through a connecting line to provide stable current for the built-in charging battery 61. When charging, the indicator light indicates whether the user is full. When the LED light is green, it indicates that it is full.

[0057] In addition, because the watch is not easily removed, it is inconvenient to charge through the connecting line, and the mobile charging device can easily achieve charging at any time, greatly improving the convenience of use. The charging device adopts an inverted structure, so when the supervisor wears the charger, a certain degree of violence will not cause the charger to fall off.

[0058] Working principle:

[0059] The main body 1 is provided with holes for connecting the conductive wires on both sides in the direction of the watchband, the first conductive wire and the second conductive wire are embedded in the PCB bottom plate 11, and are connected to the ADC acquisition module and the first conductive wire and the second conductive wire;

[0060] The two ends of the first conductive wire are embedded in the cover plate 3 and connected to the second connecting hole 31, and a nut is embedded in the second connecting hole 31;

[0061] The two second conductive wires are connected to form a loop in the second watchband 5, the second watchband 5 is passed through the watch buckle shell to one side of the U-shaped connecting piece 4 of the first watchband 2, the appropriate length is selected according to the connecting hole on the second watchband 5, and the first connecting hole 21 is corresponded, the U-shaped column of the U-shaped connecting piece 4 penetrates the first watchband 2 and the second watchband 5 to fix them, and the U-shaped column penetrates the connecting hole of the watchband and stops at the second connecting hole 31 of the cover plate 3;

[0062] The cover plate 3 is connected with the watch buckle shell and does not contact with the U-shaped column, finally the screw is threadedly connected with the nut and the U-shaped connecting piece 4, so that the first conductive wire forms a closed loop in the U-shaped connecting piece 4.

[0063] If the screw is disassembled, the loop of the first conductive wire will be disconnected, that is, the cover plate 3 does not contact with the U-shaped connecting piece 4, so that the ADC acquisition module detects the resistance change, sends an electric signal to the processor, the processor further analyzes, sends an alarm information to the alarm unit and sends a pre-warning information to the control center by the NB-IOT communication module, so that the emergency measures are taken in time. If the watchband is cut off, the loop of the conductive wire will also be disconnected, so that the resistance value detected by the ADC acquisition module changes, thereby triggering the whole alarm mechanism.

[0064] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, the scope of the utility model is defined by the appended claims and their equivalent scope.

Claims

1. A smart watch for judicial supervision, characterized in that, The utility model relates to a smart watch with temperature and blood oxygen monitoring function, including: Main body (1), First watchband (2) is connected to main body (1), and first connecting hole (21) is formed on it, wherein two first conductive wires drawn from main body (1) are embedded; Cover plate (3), second connecting hole (31) is formed on it, and the nut electrically connected to the end of first conductive wire is embedded in second connecting hole (31), and the lower end surface of the nut is lower than the lower surface of cover plate (3); U-shaped connecting piece (4) made of conductive material, the screw hole is formed on the end surface corresponding to the U-shaped column, the diameter of the end surface is less than or equal to the hole diameter of first connecting hole (21) and is greater than the hole diameter of second connecting hole (31), the U-shaped column passes through first connecting hole (21) and abuts on the lower surface of cover plate (3) at the position of second connecting hole (31), and the screw is screwed in nut and screw hole and connects two first conductive wires through U-shaped connecting piece (4); ADC acquisition module is arranged in the main body, and is electrically connected to the beginning of two first conductive wires, and the resistance change of first conductive wire is monitored in real time; Processor is arranged in main body (1), and is electrically connected to ADC acquisition module and judges watch state according to the resistance change.

2. The smart watch of claim 1, wherein, Still including second watchband (5), a second conductive wire loop drawn from main body (1) is embedded along the length direction of second watchband (5), and the two ends of the second conductive wire in the main body are electrically connected to ADC acquisition module, and ADC acquisition module is further used to monitor the resistance change of second conductive wire in real time.

3. The smart watch of claim 1, wherein, The end of first conductive wire is embedded in cover plate (3) and is directly welded on the nut, or a metal sheet is embedded on cover plate (3), one end of the metal sheet is embedded in cover plate (3) and is electrically connected to the outer side of the nut, the other end is exposed and is laid on the lower surface of cover plate (3) and is electrically connected to the end of first conductive wire.

4. The smart watch of claim 1, wherein, The watch further includes: PCB bottom plate (11), Intermediate frame plate (12), which is printed with NB-IOT antenna, GPS antenna and Bluetooth antenna; Metallic support between PCB bottom plate (11) and intermediate frame plate (12) is used to realize the signal connection between intermediate frame plate (12) and PCB bottom plate (11).

5. The smart watch of claim 4, wherein, The PCB bottom plate (11) is provided with: NB-IOT communication module, used for sending temperature monitoring and blood oxygen monitoring data to the cloud in real time. 6.The smart watch of claim 4, wherein, The PCB bottom plate (11) is provided with: Bluetooth positioning module and GPS positioning module.

7. The smart watch of claim 1, wherein, The watch further includes: Alarm unit, used for triggering alarm signal when the watch state is abnormal.

8. The smart watch of claim 1, wherein, The top surface of the watch is provided with a charging feed point (13).

9. A judicial supervision system, characterized in that it comprises: A plurality of Beacon devices; A smart watch as claimed in any one of claims 1 to 7 in communication connection with the Beacon devices.

10. A charging device for a smart watch, characterized by The charging device comprises: A cartridge (6) accommodating a charging battery (61); The cartridge (6) extends to the same side at the four corners to form a clamping hook (62) clamped on the four corners of the bottom of the smart watch as claimed in claim 6; The bottom surface of the cartridge (6) is provided with an electrode contact (63) in contact with the charging feed point (13), and the electrode contact (63) is electrically connected to the charging interface of the charging battery (61).

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