Remote monitoring device for wheelchair with oxygen supply function

Abstract

The invention relates to the technical field of remote monitoring, and discloses a remote monitoring device for a wheelchair with an oxygen supply function, and the device comprises a collection module which is used for collecting wheelchair parameters, oxygen supply parameters and environment parameters; the reminding module is used for carrying out return reminding according to the wheelchair travel distance, the wheelchair position information, the oxygen consumption and the oxygen remaining amount; whether the driving speed can be increased or not is judged according to the historical wheelchair driving speed of the user, a driving speed adjusting value is calculated according to the historical wheelchair driving speed and the oxygen remaining amount, the user is reminded to adjust the current wheelchair driving speed according to the driving speed adjusting value, and the user is reminded to return again; performing return reminding according to the environment humidity and the environment temperature; and the alarm module is used for judging whether to carry out safety alarm or not according to whether the user returns or not and the return reminding times, and sending safety alarm information to the guardian communication equipment. According to the invention, autonomy and safety of a wheelchair user are improved, and burden of a guardian is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of remote monitoring, and more particularly, to a remote monitoring device for a wheelchair with an oxygen supply function. Background Art

[0003] Currently, some wheelchairs on the market are equipped with simple oxygen supply devices, but lack the functions of real-time monitoring of oxygen reserve, user status, and surrounding environment, as well as early warning. During the use process, it is difficult for users to accurately judge whether the remaining oxygen is sufficient for the return journey, and they are also unable to timely respond to the risks brought by changes in environmental temperature and humidity. In addition, guardians cannot remotely understand the user's status and it is difficult to provide timely assistance in case of emergency.

[0004] Therefore, it is necessary to provide a remote monitoring device for a wheelchair with an oxygen supply function to solve the problem that although some wheelchairs on the market are equipped with simple oxygen supply devices, they lack the early warning functions of real-time monitoring of oxygen reserve, user status, and environmental changes, resulting in users being unable to accurately judge whether the oxygen for the return journey is sufficient and unable to respond to environmental change risks. At the same time, guardians cannot remotely understand the user's status and it is difficult to provide timely assistance in case of emergency. Summary of the Invention

[0005] In view of this, the present invention provides a remote monitoring device for a wheelchair with an oxygen supply function, aiming to solve the problem that existing wheelchairs lack the early warning functions of real-time monitoring of oxygen reserve, user status, and environmental changes, resulting in users being unable to accurately judge whether the oxygen for the return journey is sufficient and unable to respond to environmental change risks. At the same time, guardians cannot remotely understand the user's status and it is difficult to provide timely assistance in case of emergency.

[0006] The present invention provides a remote monitoring device for a wheelchair with an oxygen supply function, comprising:

[0007] A collection module, arranged on the wheelchair, for collecting wheelchair parameters, oxygen supply parameters, and environmental parameters; wherein, the wheelchair parameters include the wheelchair travel distance, wheelchair position information, and wheelchair traveling speed; the oxygen supply parameters include oxygen consumption and oxygen reserve; the environmental parameters include environmental temperature and environmental humidity;

[0008] A reminder module, for giving a return reminder according to the wheelchair travel distance, wheelchair position information, oxygen consumption, and oxygen reserve; if the user still has not returned, judging whether the traveling speed can be increased according to the user's historical wheelchair traveling speed, if it is judged that the traveling speed can be increased, calculating a traveling speed adjustment value according to the user's historical wheelchair traveling speed and oxygen reserve, reminding the user to adjust the current wheelchair traveling speed according to the traveling speed adjustment value, and reminding the user to return again;

[0009] The reminder module is also used to give a return reminder respectively according to the ambient humidity and ambient temperature;

[0010] An alarm module, which is used to judge whether to give a safety alarm according to whether the user returns and the number of return reminder times. If it is judged that a safety alarm is needed, the safety alarm information will be sent to the guardian communication device.

[0011] Further, when the reminder module is used to give a return reminder according to the wheelchair travel distance, wheelchair position information, oxygen consumption and oxygen reserve, it includes:

[0012] Set the oxygen safety amount. When the oxygen consumption is equal to the sum of the oxygen reserve and the oxygen safety amount, search for the return route according to the user's initial position and the wheelchair position information, calculate the return distances of the return routes respectively, and arrange the return distances in ascending order from short to long;

[0013] Compare the shortest return distance with the wheelchair travel distance, and judge whether to give a return reminder according to the comparison result.

[0014] Further, when comparing the shortest return distance with the wheelchair travel distance and judging whether to give a return reminder according to the comparison result, it includes:

[0015] When the shortest return distance is less than the wheelchair travel distance, judge not to give a return reminder;

[0016] When the shortest return distance is greater than or equal to the wheelchair travel distance, judge to give a return reminder.

[0017] Further, when the reminder module is used to judge whether the driving speed can be increased according to the wheelchair historical driving speed if the user has not returned yet, it includes:

[0018] Compare the current wheelchair driving speed with the maximum value of the wheelchair historical driving speed;

[0019] If the current wheelchair driving speed is greater than or equal to the wheelchair historical driving speed, judge that the driving speed cannot be increased;

[0020] If the current wheelchair driving speed is less than the wheelchair historical driving speed, judge that the driving speed can be increased.

[0021] Further, when the reminder module is used to calculate the driving speed adjustment value according to the wheelchair historical driving speed and the oxygen reserve if it is judged that the driving speed can be increased, it includes:

[0022] Calculate the difference between the oxygen reserve and the oxygen safety amount, and obtain the driving speed adjustment value according to the magnitude of the difference.

[0023] Further, when calculating the difference between the remaining oxygen and the safe oxygen amount and obtaining the driving speed adjustment value according to the magnitude of the difference, it includes:

[0024] Set a first difference and a second difference, where the first difference is less than the second difference;

[0025] If the difference is less than the first difference, the driving speed adjustment value is the first adjustment value;

[0026] If the difference is greater than or equal to the first difference and less than or equal to the second difference, the driving speed adjustment value is the second adjustment value;

[0027] If the difference is greater than the second difference, the driving speed adjustment value is the third adjustment value;

[0028] Among them, the first adjustment value is greater than the second adjustment value, the second adjustment value is greater than the third adjustment value, the third adjustment value is greater than 0, and the sum of the first adjustment value and the current wheelchair driving speed is less than or equal to the wheelchair historical driving speed.

[0029] Further, the reminder module is used to remind the user to adjust the current wheelchair driving speed according to the driving speed adjustment value, and to remind the user again when returning, including:

[0030] If the user adjusts the current wheelchair driving speed according to the driving speed adjustment value, the reminder module reminds the user to return according to the shortest return route;

[0031] If the user does not adjust the current wheelchair driving speed according to the driving speed adjustment value, the reminder module repeats the preset number of times to remind the user to adjust the current wheelchair driving speed.

[0032] Further, when the reminder module is also used to perform return reminders respectively according to the environmental humidity and environmental temperature, it includes:

[0033] Set the maximum environmental humidity value. If the environmental humidity is higher than or equal to the maximum environmental humidity value, it is determined to perform a return reminder;

[0034] If the environmental humidity is lower than the maximum environmental humidity value, it is determined not to perform a return reminder.

[0035] Further, when the reminder module is also used to perform return reminders respectively according to the environmental humidity and environmental temperature, it also includes:

[0036] Set a safe temperature range. If the environmental temperature is within the safe temperature range, it is determined not to perform a return reminder;

[0037] If the ambient temperature is not within the safe temperature range, it is determined to give a return reminder.

[0038] Further, when the alarm module is used to determine whether to give a safety alarm according to whether the user returns and the number of return reminders, it includes:

[0039] Set a reminder count threshold. If the number of return reminders is greater than or equal to the reminder count threshold and the user has not returned yet, a safety alarm is given;

[0040] If the number of return reminders is greater than or equal to the reminder count threshold and the user has returned, a safety alarm is given;

[0041] If the number of return reminders is less than the reminder count threshold and the user has not returned yet, a safety alarm is given;

[0042] If the number of return reminders is less than the reminder count threshold and the user has already returned, a safety alarm is given.

[0043] Compared with the prior art, the beneficial effects of the present invention are as follows: The acquisition module of the present invention can monitor wheelchair parameters, oxygen supply parameters, and environmental parameters in real time, ensuring that the user can comprehensively master their own state and the surrounding environment during use. Secondly, the reminder module analyzes the wheelchair travel distance, location information, oxygen consumption, and oxygen remaining amount to intelligently determine whether a return is needed and reminds the user to adjust the driving speed when necessary to ensure the user returns safely before the oxygen is exhausted. In addition, the reminder module can also give a return reminder according to the environmental humidity and temperature, avoiding the user facing health risks due to harsh environmental conditions. Finally, the alarm module sends a safety alarm message to the guardian in a timely manner by judging whether the user returns and the number of return reminders, ensuring that help can be obtained quickly in case of an emergency. This device not only improves the autonomy and safety of wheelchair users but also reduces the burden on guardians, and is an efficient and intelligent auxiliary tool. Brief Description of the Drawings

[0044] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0045] Figure 1 It is a functional block diagram of a remote monitoring device for a wheelchair with an oxygen supply function provided by an embodiment of the present invention. Detailed Embodiments

[0046] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art. It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in conjunction with the embodiments.

[0047] In some embodiments of the present application, referring to Figure 1 as shown, this embodiment provides a remote monitoring device for a wheelchair with an oxygen supply function, including:

[0048] An acquisition module, arranged on the wheelchair, the acquisition module is used to acquire wheelchair parameters, oxygen supply parameters and environmental parameters; wherein, the wheelchair parameters include wheelchair travel distance, wheelchair position information and wheelchair driving speed; the oxygen supply parameters include oxygen consumption and oxygen remaining; the environmental parameters include environmental temperature and environmental humidity;

[0049] A reminder module, used to give a return reminder according to the wheelchair travel distance, wheelchair position information, oxygen consumption and oxygen remaining; if the user still has not returned, judge whether the driving speed can be increased according to the user's wheelchair historical driving speed, if it is judged that the driving speed can be increased, calculate a driving speed adjustment value according to the wheelchair historical driving speed and oxygen remaining, remind the user to adjust the current wheelchair driving speed according to the driving speed adjustment value, and remind the user to return again;

[0050] The reminder module is also used to give a return reminder respectively according to the environmental humidity and environmental temperature;

[0051] An alarm module, used to judge whether to give a safety alarm according to whether the user has returned and the number of return reminder times, if it is judged that a safety alarm is required, send the safety alarm information to the guardian communication device.

[0052] It can be understood that the acquisition module of the present invention can monitor wheelchair parameters, oxygen supply parameters, and environmental parameters in real time, ensuring that users can comprehensively grasp their own status and the surrounding environment during use. Secondly, the reminder module analyzes the wheelchair travel distance, location information, oxygen consumption, and oxygen remaining amount to intelligently judge whether a return journey is needed and reminds the user to adjust the driving speed when necessary to ensure the user's safe return before the oxygen is exhausted. In addition, the reminder module can also give a return reminder based on the environmental humidity and temperature to avoid health risks faced by users due to harsh environmental conditions. Finally, the alarm module sends a safety warning message to the guardian in a timely manner by judging whether the user has returned and the number of return reminders, ensuring that help can be obtained quickly in case of an emergency. This device not only improves the autonomy and safety of wheelchair users but also reduces the burden on guardians, and is an efficient and intelligent auxiliary tool.

[0053] In some embodiments of the present application, when the reminder module is used to give a return reminder according to the wheelchair travel distance, wheelchair location information, oxygen consumption, and oxygen remaining amount, it includes:

[0054] Set the oxygen safety amount. When the oxygen consumption is equal to the sum of the oxygen remaining amount and the oxygen safety amount, search for the return route according to the user's initial position and the wheelchair location information, calculate the return distances of the return routes respectively, and sort the return distances in ascending order from short to long;

[0055] Compare the shortest return distance with the wheelchair travel distance, and judge whether to give a return reminder according to the comparison result.

[0056] In some embodiments of the present application, when comparing the shortest return distance with the wheelchair travel distance and judging whether to give a return reminder according to the comparison result, it includes:

[0057] When the shortest return distance is less than the wheelchair travel distance, judge not to give a return reminder;

[0058] When the shortest return distance is greater than or equal to the wheelchair travel distance, judge to give a return reminder.

[0059] It is understandable that the reminder module significantly improves the user's safety and experience by setting the oxygen safety amount and combining the wheelchair travel distance, location information, oxygen consumption, and remaining oxygen for return reminders. First, by setting the oxygen safety amount, the reminder module can give an early warning when the remaining oxygen is close to the critical value, preventing the user from being in danger due to insufficient oxygen. Second, the module intelligently calculates the return route based on the user's initial position and current position, and sorts the return distances from short to long to ensure that the user can choose the optimal path to return, saving time and oxygen consumption. In addition, by comparing the shortest return distance with the wheelchair travel distance, the reminder module can accurately determine whether a return reminder needs to be issued, avoiding unnecessary interference and ensuring that the user has enough time to return safely before the oxygen runs out. This intelligent return reminder mechanism not only improves the safety and autonomy of the user's travel but also reduces the concerns of the guardian, providing more reliable and convenient auxiliary support for the user.

[0060] In some embodiments of the present application, when the reminder module is used to determine whether the travel speed can be increased according to the historical travel speed of the wheelchair if the user has not returned yet, it includes:

[0061] Compare the current wheelchair travel speed with the maximum value of the historical wheelchair travel speed;

[0062] If the current wheelchair travel speed is greater than or equal to the historical wheelchair travel speed, it is determined that the travel speed cannot be increased;

[0063] If the current wheelchair travel speed is less than the historical wheelchair travel speed, it is determined that the travel speed can be increased.

[0064] In some embodiments of the present application, when the reminder module is used to calculate the travel speed adjustment value according to the historical travel speed of the wheelchair and the remaining oxygen if it is determined that the travel speed can be increased, it includes:

[0065] Calculate the difference between the remaining oxygen and the oxygen safety amount, and obtain the travel speed adjustment value according to the magnitude of the difference.

[0066] In some embodiments of the present application, when calculating the difference between the remaining oxygen and the oxygen safety amount and obtaining the travel speed adjustment value according to the magnitude of the difference, it includes:

[0067] Set a first difference and a second difference, where the first difference is less than the second difference;

[0068] If the difference is less than the first difference, the travel speed adjustment value is the first adjustment value;

[0069] If the difference is greater than or equal to the first difference and less than or equal to the second difference, the travel speed adjustment value is the second adjustment value;

[0070] If the difference is greater than the second difference, the driving speed adjustment value is the third adjustment value;

[0071] Wherein, the first adjustment value is greater than the second adjustment value, the second adjustment value is greater than the third adjustment value, the third adjustment value is greater than 0, and the sum of the first adjustment value and the current wheelchair driving speed is less than or equal to the wheelchair historical driving speed.

[0072] It can be understood that in some embodiments of the present application, the reminder module intelligently determines whether the user can increase the driving speed, and dynamically adjusts the driving speed according to the difference between the oxygen remaining amount and the oxygen safety amount, further improving the user's safety and usage efficiency. First, the module compares the current driving speed with the historical maximum speed to ensure that the speed adjustment is within the user's safety range and avoid accidental risks caused by too high a speed. Second, according to the difference between the oxygen remaining amount and the oxygen safety amount, the module divides the driving speed adjustment value into multiple gradients to ensure that the user can return at a faster speed when the oxygen remaining amount is less, and maintain a stable driving when the oxygen remaining amount is sufficient, improving both the return efficiency and safety. In addition, this dynamic adjustment mechanism can flexibly respond according to the actual situation, prevent the user from being in danger due to insufficient oxygen, and optimize the return time to the greatest extent. This intelligent speed adjustment strategy not only enhances the safety and autonomy of the user's travel, but also provides more personalized and efficient auxiliary support for the user.

[0073] In some embodiments of the present application, the reminder module is used to remind the user to adjust the current wheelchair driving speed according to the driving speed adjustment value, and to remind the user again when returning, including:

[0074] If the user adjusts the current wheelchair driving speed according to the driving speed adjustment value, the reminder module reminds the user to return according to the shortest return route.

[0075] If the user does not adjust the current wheelchair driving speed according to the driving speed adjustment value, the reminder module repeats the preset number of times to remind the user to adjust the current wheelchair driving speed.

[0076] It can be understood that in some embodiments of the present application, the reminder module further enhances the user's safety and usage experience through an intelligent return reminder and speed adjustment mechanism. When the user successfully adjusts the wheelchair speed according to the driving speed adjustment value, the module will guide the user to return along the shortest return route, ensuring that the user can return safely along the optimal path, maximizing time and oxygen consumption savings. If the user fails to adjust the speed in a timely manner, the module will ensure that the user is aware of the risks of the current state and takes necessary measures through repeated reminders. This repeated reminder mechanism not only enhances the user's alertness but also provides the user with multiple opportunities for adjustment, avoiding situations where oxygen is insufficient or the return cannot be made in a timely manner due to negligence or improper operation. In addition, this design fully considers the user's actual operating habits and possible reaction delays, and provides more user-friendly and reliable auxiliary support through an intelligent reminder strategy. Overall, this mechanism significantly improves the safety and autonomy of the user's travel, reduces the concerns of the guardian, and creates a more reassuring and convenient usage experience for the user.

[0077] In some embodiments of the present application, when the reminder module is further configured to perform return reminders respectively according to the environmental humidity and environmental temperature, it includes:

[0078] Set a maximum environmental humidity value. If the environmental humidity is higher than or equal to the maximum environmental humidity value, it is determined to perform a return reminder;

[0079] If the environmental humidity is lower than the maximum environmental humidity value, it is determined not to perform a return reminder.

[0080] In some embodiments of the present application, when the reminder module is further configured to perform return reminders respectively according to the environmental humidity and environmental temperature, it further includes:

[0081] Set a safe temperature range. If the environmental temperature is within the safe temperature range, it is determined not to perform a return reminder;

[0082] If the environmental temperature is not within the safe temperature range, it is determined to perform a return reminder.

[0083] It can be understood that in some embodiments of the present application, the reminder module further improves the safety and comfort of users by monitoring the environmental humidity and temperature and making intelligent judgments. First, the module sets a maximum environmental humidity value. When the environmental humidity is too high, it timely reminds the user to return, avoiding physical discomfort or health risks caused by the high-humidity environment for the user, such as shortness of breath or skin problems. Second, the module also sets a safe temperature range. When the environmental temperature exceeds this range, it reminds the user to return, preventing the user from facing dangers such as heatstroke and frostbite due to extreme high or low temperatures. This dual environmental monitoring mechanism can effectively cope with the complex and changeable outdoor environment and provide comprehensive protection for users. In addition, this intelligent reminder function not only takes into account the physiological health needs of users but also takes into account the sensitivity of special groups using wheelchairs to environmental changes, ensuring that users can move in a safe environment. Overall, this design significantly improves the safety and comfort of users' travel, while reducing potential risks caused by environmental factors and providing more intelligent and user-friendly auxiliary support for users.

[0084] In some embodiments of the present application, when the alarm module is used to determine whether to perform a safety alarm according to whether the user returns and the number of return reminder times, it includes:

[0085] Set a reminder times threshold. If the number of return reminder times is greater than or equal to the reminder times threshold and the user still has not returned, a safety alarm is performed;

[0086] If the number of return reminder times is greater than or equal to the reminder times threshold and the user has returned, a safety alarm is performed;

[0087] If the number of return reminder times is less than the reminder times threshold and the user still has not returned, a safety alarm is performed;

[0088] If the number of return reminder times is less than the reminder times threshold and the user has already returned, a safety alarm is performed.

[0089] It can be understood that in some embodiments of the present application, the alarm module performs safety warnings by setting a reminder count threshold and combining the status of whether the user has returned, significantly improving the user's safety guarantee and guardianship efficiency. First, by setting the reminder count threshold, the module can issue safety warnings in a timely manner when the user ignores the return reminder multiple times, preventing the user from being in danger due to negligence or unexpected situations. Second, regardless of whether the user has returned, the module will make a comprehensive judgment based on the reminder count and the user's status to ensure that alarm information can be sent to the guardian in a timely manner under any abnormal circumstances. This design not only improves the accuracy and timeliness of the alarm but also avoids false alarms or missed alarms. In addition, the intelligent judgment mechanism of the alarm module can effectively reduce the burden on the guardian, enabling them not to constantly monitor the user's status while ensuring that they can take prompt action in case of an emergency. Overall, this design significantly enhances the user's safety and the reliability of guardianship, providing more comprehensive and efficient guarantee support for the user and the guardian.

[0090] Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0091] The present application is described with reference to the flowcharts and / or block diagrams of methods, apparatuses (systems), and computer program products according to the embodiments of the present application. It should be understood that each flow and / or block in the flowcharts and / or block diagrams can be implemented by computer program instructions, and the combination of flows and / or blocks in the flowcharts and / or block diagrams can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate means for implementing the functions specified in Figure 1 one or more of the flows Figure 1 or blocks.

[0092] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer-readable memory generate a manufactured article including instruction means, and the instruction means implements the functions specified in Figure 1 one or more of the flows Figure 1 or blocks.

[0093] These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions for implementing the functions specified in one process or a plurality of processes and / or blocks Figure 1 one process or a plurality of processes and / or blocks Figure 1 steps for the functions specified in one block or a plurality of blocks.

[0094] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications or equivalent replacements can still be made to the specific embodiments of the present invention. Any modification or equivalent replacement that does not depart from the spirit and scope of the present invention shall be covered by the protection scope of the claims of the present invention.

Claims

1. A remote monitoring device for a wheelchair with an oxygen supply function, characterized in that, Including: A collection module, which is set on the wheelchair. The collection module is used to collect wheelchair parameters, oxygen supply parameters and environmental parameters. Among them, the wheelchair parameters include the wheelchair travel distance, wheelchair position information and wheelchair driving speed; the oxygen supply parameters include oxygen consumption and oxygen remaining; the environmental parameters include environmental temperature and environmental humidity; A reminder module, which is used to give a return reminder according to the wheelchair travel distance, wheelchair position information, oxygen consumption and oxygen remaining. If the user still has not returned, it judges whether the driving speed can be increased according to the user's wheelchair historical driving speed. If it is judged that the driving speed can be increased, it calculates a driving speed adjustment value according to the wheelchair historical driving speed and oxygen remaining, reminds the user to adjust the current wheelchair driving speed according to the driving speed adjustment value, and reminds the user to return again; The reminder module is also used to give a return reminder according to the environmental humidity and environmental temperature respectively; An alarm module, which is used to judge whether to give a safety alarm according to whether the user has returned and the number of return reminder times. If it is judged that a safety alarm is needed, it sends the safety alarm information to the guardian communication device.

2. The remote monitoring device of the wheelchair with an oxygen supply function according to claim 1, characterized in that, When the reminder module is used to give a return reminder according to the wheelchair travel distance, wheelchair position information, oxygen consumption and oxygen remaining, it includes: Setting an oxygen safety amount. When the oxygen consumption is equal to the sum of the oxygen remaining and the oxygen safety amount, it searches for a return route according to the user's initial position and the wheelchair position information, calculates the return distances of the return routes respectively, and arranges the return distances in ascending order from short to long; Comparing the shortest return distance with the wheelchair travel distance, and judging whether to give a return reminder according to the comparison result.

3. The remote monitoring device of the wheelchair with an oxygen supply function according to claim 2, characterized in that, When comparing the shortest return distance with the wheelchair travel distance and judging whether to give a return reminder according to the comparison result, it includes: When the shortest return distance is less than the wheelchair travel distance, it is judged not to give a return reminder; When the shortest return distance is greater than or equal to the wheelchair travel distance, it is judged to give a return reminder.

4. The remote monitoring device for a wheelchair with an oxygen supply function according to claim 3, characterized in that, When the reminder module is used to judge whether the driving speed can be increased according to the user's wheelchair historical driving speed if the user still has not returned, it includes: Comparing the current wheelchair driving speed with the maximum value of the wheelchair historical driving speed; If the current wheelchair driving speed is greater than or equal to the wheelchair historical driving speed, it is judged that the driving speed cannot be increased; If the current wheelchair driving speed is less than the wheelchair historical driving speed, it is judged that the driving speed can be increased.

5. The remote monitoring device for a wheelchair with an oxygen supply function according to claim 4, characterized in that, When the reminder module is used to calculate a driving speed adjustment value according to the wheelchair historical driving speed and oxygen remaining if it is judged that the driving speed can be increased, it includes: Calculating the difference between the oxygen remaining and the oxygen safety amount, and obtaining the driving speed adjustment value according to the size of the difference.

6. The remote monitoring device for a wheelchair with an oxygen supply function according to claim 5, characterized in that, When calculating the difference between the oxygen remaining and the oxygen safety amount and obtaining the driving speed adjustment value according to the size of the difference, it includes: Setting a first difference and a second difference, where the first difference is less than the second difference; If the difference is less than the first difference, the driving speed adjustment value is the first adjustment value; If the difference is greater than or equal to the first difference and less than or equal to the second difference, the driving speed adjustment value is the second adjustment value; If the difference is greater than the second difference, the driving speed adjustment value is the third adjustment value; Wherein, the first adjustment value is greater than the second adjustment value, the second adjustment value is greater than the third adjustment value, the third adjustment value is greater than 0, and the sum of the first adjustment value and the current wheelchair driving speed is less than or equal to the wheelchair historical driving speed.

7. The remote monitoring device for a wheelchair with an oxygen supply function according to claim 6, characterized in that, The reminder module is used to remind the user to adjust the current wheelchair driving speed according to the driving speed adjustment value, and to remind the user again when returning, including: If the user adjusts the current wheelchair driving speed according to the driving speed adjustment value, the reminder module reminds the user to return according to the shortest return route; If the user does not adjust the current wheelchair driving speed according to the driving speed adjustment value, the reminder module repeats the preset number of times to remind the user to adjust the current wheelchair driving speed.

8. The remote monitoring device for a wheelchair with an oxygen supply function according to claim 7, characterized in that, The reminder module is also used to perform return reminders respectively according to the ambient humidity and ambient temperature, including: Set a maximum ambient humidity value. If the ambient humidity is higher than or equal to the maximum ambient humidity value, it is determined that a return reminder is to be performed; If the ambient humidity is lower than the maximum ambient humidity value, it is determined that no return reminder is to be performed.

9. The remote monitoring device for a wheelchair with an oxygen supply function according to claim 8, characterized in that, The reminder module is also used to perform return reminders respectively according to the ambient humidity and ambient temperature, and further includes: Set a safe temperature range. If the ambient temperature is within the safe temperature range, it is determined that no return reminder is to be performed; If the ambient temperature is not within the safe temperature range, it is determined that a return reminder is to be performed.

10. The remote monitoring device of the wheelchair with an oxygen supply function according to claim 9, characterized in that, The alarm module is used to determine whether to perform a safety alarm according to whether the user has returned and the number of return reminder times, including: Set a reminder times threshold. If the number of return reminder times is greater than or equal to the reminder times threshold and the user has not returned yet, a safety alarm is performed; If the number of return reminder times is greater than or equal to the reminder times threshold and the user has returned, a safety alarm is performed; If the number of return reminder times is less than the reminder times threshold and the user has not returned yet, a safety alarm is performed; If the number of return reminder times is less than the reminder times threshold and the user has already returned, a safety alarm is performed.

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