A low-power gas measurement method and wearable device

Abstract

The present invention belongs to the field of wearable devices, and discloses a low-power gas measurement method and a wearable device, the method comprising: obtaining the current position information of the wearable device, and determining whether the position of the wearable device changes; when the position changes, obtaining the position change result of the wearable device; based on different position change results, automatically triggering the gas measurement of the wearable device and timing in different ways; when the gas measurement time reaches a preset time or the gas concentration value is obtained, turning off the gas measurement. The present invention combines the positioning and time in the wearable device, and turns on and off the measurement regularly or on demand, thereby achieving a significant reduction in power consumption.

Description

Technical Field

[0001] The present invention relates to the field of wearable devices, and in particular to a low-power gas measurement method and a wearable device. Background Art

[0002] As people's health awareness increases, they are increasingly concerned about the concentration of harmful gases such as VOC, CO, CO2, and formaldehyde in the air they live in. It is important to use wearable devices to timely obtain the concentration of harmful gases in the air.

[0003] Wearable devices pursue the demand for long battery life. Currently, gas sensors based on electrochemical principles have the lowest power consumption. Their power consumption only comes from sensor signal amplification and acquisition circuits. Their methods of reducing power consumption are also mainly concentrated in this aspect, but the degree of reduction is still difficult to meet the requirements for application in wearable devices. Summary of the Invention

[0004] The purpose of the present invention is to provide a low-power gas measurement method and a wearable device to solve the above problems.

[0005] The technical solutions provided by the present invention are as follows:

[0006] In one aspect, a low-power gas measurement method is provided, comprising:

[0007] Obtaining the current location information of the wearable device and determining whether the location of the wearable device has changed;

[0008] When a position change occurs, obtaining a position change result of the wearable device;

[0009] Based on different position change results, automatically triggering gas measurement and timing of the wearable device in different ways;

[0010] When the gas measurement time reaches a preset time or the gas concentration value is obtained, the gas measurement is turned off.

[0011] Further preferably, when a position change occurs, obtaining a position change result of the wearable device includes:

[0012] When a location change occurs, obtaining the location change result based on the current location information and the historical location information;

[0013] The position change results are from indoor to outdoor or from outdoor to indoor.

[0014] Further preferably, the method of automatically triggering the gas measurement and timing of the wearable device in different ways based on different position change results includes:

[0015] When the wearable device moves from outdoors to indoors, gas measurement and timing are automatically triggered.

[0016] Further preferably, the method of automatically triggering the gas measurement and timing of the wearable device in different ways based on different position change results includes:

[0017] When the wearable device moves from indoors to outdoors, gas measurement is triggered and timed according to a preset frequency.

[0018] Further preferably, when the wearable device moves from indoors to outdoors, gas measurement is triggered and timing is performed according to a preset frequency, including:

[0019] Manually setting the preset frequency;

[0020] The gas measurement is triggered and timed according to the preset frequency.

[0021] Further preferably, when the wearable device moves from indoors to outdoors, gas measurement is triggered and timing is performed according to a preset frequency, including:

[0022] Obtaining gas concentration distribution maps at different locations corresponding to the preset frequency;

[0023] Using a big data AI algorithm to adjust the preset frequency according to the gas concentration distribution map;

[0024] According to the adjusted preset frequency, gas measurement is triggered regularly and timing is performed.

[0025] More preferably, it also includes:

[0026] When the start time of the gas measurement has not reached the next measurement time corresponding to the preset frequency and the position change result of the wearable device changes, the triggering mode of the gas measurement is adjusted.

[0027] Further preferably, obtaining the current location information of the wearable device and determining whether the location of the wearable device has changed includes:

[0028] Acquire the current position information of multiple channels in real time through different methods;

[0029] Based on the current position information of the multiple channels, it is determined whether the position of the wearable device has changed.

[0030] More preferably, it also includes:

[0031] Alarms are issued in different ways according to the gas measurement time and the corresponding gas measurement concentration.

[0032] A wearable device comprising:

[0033] A determination module, configured to obtain the current location information of the wearable device and determine whether the location of the wearable device has changed;

[0034] An acquisition module, configured to acquire a position change result of the wearable device when a position change occurs;

[0035] A trigger module, configured to automatically trigger gas measurement and timing of the wearable device in different ways based on different position change results;

[0036] The closing module is used to close the gas measurement when the gas measurement time reaches a preset time or the gas concentration value is obtained.

[0037] The present invention provides a low-power gas measurement method and wearable device, which have at least the following technical effects:

[0038] The present invention combines positioning and time in wearable devices, and turns measurements on and off regularly or on demand, thereby significantly reducing power consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0040] Figure 1 is a schematic diagram of an embodiment of a low-power gas measurement method of the present invention;

[0041] Figure 2 is a schematic diagram of another embodiment of a low-power gas measurement method of the present invention;

[0042] Figure 3 is a schematic diagram of an embodiment of a wearable device in the present invention;

[0043] Figure 4 is a schematic diagram of another embodiment of a wearable device in the present invention. DETAILED DESCRIPTION

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0045] To simplify the drawings, only the parts relevant to the present invention are schematically shown in each figure. They do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically depicted or labeled. As used herein, "one" not only means "only one" but also "more than one."

[0046] It should be further understood that the term "and / or" used in this specification and the appended claims refers to and includes any and all possible combinations of one or more of the associated listed items.

[0047] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in the present invention based on the specific circumstances.

[0048] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0049] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the specific embodiments of the present invention will be described below with reference to the accompanying drawings. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings and other embodiments can be obtained based on these drawings without inventive work.

[0050] Example 1

[0051] The present invention provides an embodiment of a low-power gas measurement method, such as Figure 1 As shown, including:

[0052] S100 obtains the current location information of the wearable device and determines whether the location of the wearable device has changed.

[0053] Specifically, the current location information of the wearable device is obtained through a location information sensing module, which includes modules such as WIFI, GPS, mobile network information, and environmental information (such as light).

[0054] S200: When a position change occurs, obtaining a position change result of the wearable device.

[0055] Specifically, the processing and control module first obtains and processes the data of the location information perception module to determine the location change, such as: indoor to outdoor, outdoor to indoor.

[0056] Exemplarily, the specific judgment logic includes:

[0057] 1. The signal strength of a Wi-Fi hotspot in the Wi-Fi list is determined by its slope (negative for the process of going from indoors to outdoors, positive for the process of going from outdoors to indoors) and whether it is below or above a certain threshold. You can supplement the Wi-Fi list information by visiting the site.

[0058] 2. Judge based on the sudden change of GPS signal SNR curve.

[0059] 3. Determine based on at least one of the satellite elevation angle and azimuth information obtained from the GPS signal.

[0060] 4. Judge by the reception strength of mobile communication signals.

[0061] 5. Judge by the change in ambient light intensity, slope and threshold. The judgment logic is the same as that in step 1.

[0062] It should be noted that one or more discrimination methods can be selected to complement each other to improve accuracy, and then the timing and timing modules can be used to control the working logic of the gas sensor.

[0063] S300 automatically triggers gas measurement and timing of the wearable device in different ways based on different position change results.

[0064] S400: When the gas measurement time reaches a preset time or the gas concentration value is obtained, the gas measurement is turned off.

[0065] The specific steps include:

[0066] Single measurement shutdown strategy: Under normal circumstances, the accurate gas concentration in the current environment can be obtained within 1 minute, and the system can be shut down after the measurement is completed, so it can be set to shut down after 1 minute; within 1 minute, you can also combine it with a period of time. When the absolute value of the gas concentration fluctuation change value and the concentration curve slope value is lower than the corresponding threshold, it is determined that the accurate gas concentration value has been obtained and the gas measurement is dynamically shut down.

[0067] Preferably, it also includes:

[0068] When the start time of the gas measurement has not reached the next measurement time corresponding to the preset frequency and the position change result of the wearable device changes, the triggering mode of the gas measurement is adjusted.

[0069] Specifically, when the gas measurement start time has not reached the next measurement time corresponding to the preset frequency and the position of the wearable device has not changed, the triggering mode of the gas measurement is adjusted.

[0070] Preferably, obtaining the current location information of the wearable device and determining whether the location of the wearable device has changed includes:

[0071] The current position information of multiple channels is obtained in real time through multiple channels in different ways; based on the current position information of multiple channels, it is determined whether the position of the wearable device has changed.

[0072] Specifically, combined with the positioning function of the wearable device, an interrupt triggering method is used to trigger gas measurement. In this embodiment, it is first determined whether there is a change in indoor and outdoor position. If there is no position change, no interrupt is triggered, and gas measurement is directly started and timed according to the timer.

[0073] If a location change occurs, an interrupt is triggered to determine whether it was from indoors to outdoors or from outdoors to indoors. The former also starts timed gas measurement and timing according to the timer, while the latter starts timing and gas measurement. During this process, the gas concentration is obtained, and then the measurement is stopped to determine the gas concentration threshold.

[0074] Each concentration threshold corresponds to a tolerable time limit, and when the time limit is reached, the user will be reminded to leave. The reminder can be displayed on the screen or by voice.

[0075] Among them, when the gas concentration reaches the threshold concentration 3, it indicates that the concentration is too high and you need to leave immediately. If there is a change in the indoor and outdoor position within the limited time, an interrupt will be triggered and the above process will be repeated.

[0076] The sensor signal amplification and acquisition circuits have limited power consumption reduction. People are usually more concerned about the concentration of harmful gases in the air where they stay for a long time or have just visited and need to stay for a period of time. In addition, different concentrations of harmful gases will cause harm to the human body for different periods of time.

[0077] In this embodiment, the positioning and time in the wearable device are combined to turn on and off the measurement regularly or on demand, and a reminder to leave function is added according to the gas concentration and time, thereby significantly reducing power consumption.

[0078] Example 2

[0079] Based on the above embodiment, the parts in this embodiment that are the same as those in the above embodiment will not be described in detail. Figure 2 As shown, this embodiment provides an embodiment of a low-power gas measurement method, which specifically includes:

[0080] Preferably, when a position change occurs in step S200, obtaining a position change result of the wearable device includes:

[0081] When a location change occurs, the location change result is obtained based on the current location information and the historical location information.

[0082] The position change results are from indoor to outdoor or from outdoor to indoor.

[0083] Preferably, the step of automatically triggering the wearable device to measure gas and perform timing in different ways based on different position change results in S300 includes:

[0084] When the wearable device moves from indoors to outdoors, gas measurement is triggered and timed according to a preset frequency.

[0085] Preferably, when the wearable device moves from indoors to outdoors, gas measurement is triggered and timing is performed according to a preset frequency, including:

[0086] Manually set the preset frequency; and trigger gas measurement and timing according to the preset frequency.

[0087] Preferably, when the wearable device moves from indoors to outdoors, gas measurement is triggered and timing is performed according to a preset frequency, including:

[0088] Obtain a gas concentration distribution map at different positions corresponding to the preset frequency; use a big data AI algorithm to adjust the preset frequency according to the gas concentration distribution map; and trigger gas measurement and timing according to the adjusted preset frequency.

[0089] Specifically, when the location change result is from indoor to outdoor, the test is still started at a fixed frequency. In this process, a gas concentration distribution map between different locations can be obtained.

[0090] The timing frequency can be set manually as required.

[0091] Alternatively, based on calculations based on big data AI algorithms, when it is found that the gas concentration between two locations is high, the frequency can be increased and more measurements can be taken the next time the same route is taken to obtain a richer gas concentration distribution map.

[0092] In addition, the gas concentration distribution map can also be pushed to parents, and when the concentration reaches the corresponding threshold, the user will be directly reminded.

[0093] Specifically, by measuring the gas sensor of the wearable device, the real-time gas concentration, gas concentration over a period of time, and gas type can be obtained.

[0094] For example, when a user moves from indoors to outdoors, the safety of the gas type may change due to changes in environmental factors.

[0095] At this time, by measuring the gas concentration at a fixed frequency or adjusting the frequency in real time, the changes in the concentration of different gases can be measured, and the gas sensor can be turned off in time after the measurement to reduce power consumption.

[0096] In addition, the processing and control module calculates whether the gas concentration in the current environment exceeds the threshold. When the concentration of one of the gases exceeds the threshold, a reminder is given through the display module or voice module of the wearable device.

[0097] In this embodiment, since different harmful gas concentrations cause harm to the human body at different times, the positioning and time in the wearable device are combined to turn on and off the measurement regularly or on demand, and then a reminder to leave function is added according to the gas concentration and time, thereby significantly reducing power consumption.

[0098] Example 3

[0099] Based on the above embodiment, the parts in this embodiment that are the same as those in the above embodiment will not be described in detail. Figure 2 As shown, this embodiment provides an embodiment of a low-power gas measurement method, which specifically includes:

[0100] Preferably, the step S300 of automatically triggering the gas measurement and timing of the wearable device in different ways based on different position change results includes:

[0101] When the wearable device moves from outdoors to indoors, gas measurement and timing are automatically triggered.

[0102] Preferably, the method further includes: when the position of the wearable device does not change, starting measurement at a fixed frequency.

[0103] Preferably, the method further includes: issuing an alarm in different ways according to the gas measurement time and the corresponding gas measurement concentration.

[0104] For example, in this embodiment, the gas concentration in the environment is mainly obtained through the gas sensor of the wearable device.

[0105] Specifically, it is based on the gas concentration measured at that time and the time spent in the environment (ie, no position change occurs).

[0106] In this embodiment, the working logic of the gas sensor is as follows: when there is no position change, measurement is started regularly at a fixed frequency; when there is a position change, an interrupt is triggered.

[0107] When the position change result is from outdoor to indoor, the measurement is immediately started and the timing is started at the same time. After the measurement is completed, the sensor is turned off and the timing continues.

[0108] Among them, each concentration threshold corresponds to a tolerable time limit, and a reminder to leave will be given when the time limit is reached.

[0109] Specific reminder methods may include: display on the display screen or voice reminder. For example, if the measured gas concentration reaches threshold 1 and the timer reaches time limit 1, a reminder will be given; if the gas concentration reaches threshold 2 and the timer reaches time limit 2, a reminder will be given.

[0110] Among them, the threshold concentration of 3 indicates that the concentration is too high and you need to be reminded to leave immediately. Before the timer expires, if the location changes again, that is, from indoors to outdoors, the measurement can be carried out according to its logic.

[0111] In this embodiment, when the user moves from outdoors to indoors, due to the indoor area limitations, the concentration of harmful gases in the room may have exceeded the concentration threshold, so the gas concentration is measured by immediately turning on the gas sensor to avoid the harmful gases in the room from causing harm to the human body.

[0112] Example 4

[0113] Based on the above embodiment, the parts in this embodiment that are the same as those in the above embodiment will not be described in detail. Figure 3 、 4 As shown, this embodiment provides a wearable device, including:

[0114] The determination module 101 is configured to obtain the current location information of the wearable device and determine whether the location of the wearable device has changed.

[0115] The acquisition module 102 is configured to acquire a position change result of the wearable device when a position change occurs.

[0116] The trigger module 103 is configured to automatically trigger the wearable device to measure gas and set timing in different ways based on different position change results.

[0117] The closing module 104 is configured to close the gas measurement when the gas measurement time reaches a preset time or the gas concentration value is obtained.

[0118] Specifically, combined with the positioning function of wearable devices, an interrupt triggering method is used to control gas measurement. First, it is determined whether there has been a change in indoor or outdoor position. If not, an interrupt is triggered, and gas measurement is started and timed according to the schedule. If a position change occurs, an interrupt is triggered, and it is determined whether it is from indoor to outdoor or from outdoor to indoor. The former also starts the scheduled gas measurement and timed according to the schedule. The latter starts the timer and gas measurement, obtains the gas concentration, and then turns off the measurement to determine the gas concentration threshold. Each concentration threshold corresponds to a limited time limit that can be tolerated. When the limited time is reached, a reminder to leave is issued. The reminder method can be displayed on the display or a voice reminder. The threshold concentration of 3 indicates that the concentration is too high and it is necessary to leave immediately. If there is a change in indoor or outdoor position within the limited time, an interrupt is triggered and the above process is repeated.

[0119] Exemplary wearable devices include:

[0120] 1. Location information perception module, including WIFI, GPS, mobile network information, environmental information (such as light) and other modules.

[0121] 2. The processing and control module first obtains and processes the data from the location information sensing module to determine the location change (indoor to outdoor, outdoor to indoor). The judgment logic is as follows:

[0122] ① The system uses the signal strength of a Wi-Fi hotspot in the Wi-Fi list, i.e., the slope (negative for indoor-outdoor movement, positive for outdoor-indoor movement), and whether it is below or above a certain threshold. The Wi-Fi list information can be supplemented by visiting the site. ② The system uses a sudden change in the GPS signal SNR curve. ③ The system uses at least one of the satellite elevation angle and azimuth information obtained by the GPS signal. ④ The system uses the received strength of the mobile communication signal. ⑤ The system uses the change in ambient light intensity. The slope and threshold follow the same logic as in ①. One or more of these can be selected to complement each other and improve accuracy. The timing and timing modules are then used to control the operating logic of the gas sensor.

[0123] 3. Gas sensor, to obtain the gas concentration in the environment.

[0124] 4. Gas sensor working logic:

[0125] 1. When there is no position change, the measurement is started regularly at a fixed frequency; when there is a position change, an interrupt is triggered.

[0126] 2. When moving from outdoor to indoor, measurement starts immediately and timing begins. Once measurement is complete, the sensor turns off and timing continues. Each concentration threshold corresponds to a time limit that can be tolerated, and a reminder to leave is provided when the time limit is reached. Reminders can be displayed on the screen or by voice. For example, if the measured gas concentration reaches threshold 1, a reminder will be issued when the time limit is reached. If the gas concentration reaches threshold 2, a reminder will be issued when the time limit is reached. Threshold 3 indicates that the concentration is too high, requiring immediate departure. If the timer does not expire, the location can be changed again, that is, from indoor to outdoor, and measurement can be performed according to the logic.

[0127] 3. From indoors to outdoors, the test can still be started at a fixed frequency to obtain a gas concentration distribution map between different locations. The timing frequency can be set manually, or based on the big data AI algorithm, if the gas concentration is high between two locations, the frequency can be increased the next time the same route is taken, and multiple tests can be performed to obtain a richer gas concentration distribution map. The gas concentration distribution map can also be pushed to parents, and when the concentration reaches the corresponding threshold, the user will be directly notified.

[0128] In this embodiment, therefore, the positioning and time in the wearable device are combined, the measurement is turned on and off regularly or on demand, and a reminder to leave function is added according to the gas concentration and time, thereby achieving a significant reduction in power consumption.

[0129] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0130] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented with electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0131] In the embodiments provided in this application, it should be understood that the disclosed devices / electronic devices and methods can be implemented in other ways. Exemplarily, the device / electronic device embodiments described above are merely schematic. Exemplarily, the division of the modules or units is merely a logical function division. There may be other division methods in actual implementation. Exemplarily, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, and the indirect coupling or communication connection of the device or unit can be electrical, mechanical or other forms.

[0132] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0133] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0134] It should be noted that the above embodiments can be freely combined as needed. The above description is only a preferred embodiment of the present invention. It should be pointed out that those skilled in the art can make several improvements and modifications without departing from the principles of the present invention, and such improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A low-power gas measurement method, characterized in that: include: Obtaining current location information of the wearable device, and determining whether the location of the wearable device has changed; When a position change occurs, obtaining a position change result of the wearable device; Based on different position change results, automatically triggering the wearable device to measure gas and time in different ways; When the gas measurement time reaches a preset time or the gas concentration value is obtained, the gas measurement is turned off; The location change result includes one or more of indoor to outdoor and outdoor to indoor; The method of automatically triggering the gas measurement and timing of the wearable device in different ways based on different position change results includes: When the wearable device moves from outdoors to indoors, gas measurement and timing are automatically triggered; And / or, when the wearable device moves from indoors to outdoors, gas measurement is triggered and timing is performed according to a preset frequency.

2. The low-power gas measurement method according to claim 1, characterized in that: When a position change occurs, obtaining a position change result of the wearable device includes: When a position change occurs, the position change result is obtained based on the current position information and the historical position information.

3. The low-power gas measurement method according to claim 1, characterized in that: When the wearable device moves from indoors to outdoors, triggering gas measurement and timing according to a preset frequency, includes: Manually setting the preset frequency; The gas measurement is triggered and the timing is performed according to the preset frequency.

4. The low-power gas measurement method according to claim 1, characterized in that: When the wearable device moves from indoors to outdoors, triggering gas measurement and timing according to a preset frequency, includes: Obtaining gas concentration distribution diagrams at different positions corresponding to the preset frequency; Using a big data AI algorithm to adjust the preset frequency according to the gas concentration distribution map; According to the adjusted preset frequency, the gas measurement is triggered and the timing is performed regularly.

5. The low-power gas measurement method according to any one of claims 1 to 4, characterized in that: Also includes: When the start time of the gas measurement has not reached the next measurement time corresponding to the preset frequency and the position change result of the wearable device changes, the triggering mode of the gas measurement is adjusted.

6. The low-power gas measurement method according to claim 5, characterized in that: The obtaining the current location information of the wearable device and determining whether the location of the wearable device changes includes: Acquire the current position information of multiple channels in real time through multiple channels in different ways; Based on the current position information of the multiple channels, it is determined whether the position of the wearable device changes.

7. The low-power gas measurement method according to claim 5, characterized in that: Also includes: Alarms are issued in different ways according to the gas measurement time and the corresponding gas measurement concentration.

8. A wearable device, characterized in that: include: A determination module, used to obtain the current location information of the wearable device and determine whether the location of the wearable device has changed; An acquisition module, used for acquiring a position change result of the wearable device when a position change occurs; A trigger module, used for automatically triggering the gas measurement and timing of the wearable device in different ways based on different position change results; A closing module, used to close the gas measurement when the gas measurement time reaches a preset time or the gas concentration value is obtained; The trigger module is used to automatically trigger gas measurement and timing when the wearable device moves from outdoor to indoor; and / or, the trigger module is used to trigger gas measurement and timing according to a preset frequency when the wearable device moves from indoor to outdoor.

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