A method for eliminating false alarms of a call device by assisting motion measurement of a call device

Abstract

The present invention provides a method for assisting in measuring motion to eliminate false alarms of a distress call device, which relates to the technical field of safety protection equipment and comprises a distress call device body and a wristband; the wristband collects motion signals of a firefighter's wrist in real time through a first acceleration sensor, and when the motion signals are collected, sends a control signal to the distress call device body through a first wireless processor chip; the distress call device body collects motion signals of a firefighter's body part in real time through a second acceleration sensor, and when no motion signals of the firefighter's body part are collected, counts the counter, and when the count data reaches a preset value, controls the alarm device to issue an alarm indication, and when the control signal is received through the second wireless processor chip, resets the count data, and detects the motion state of the firefighter in combination with the wristband, the false alarm operation can be canceled through the motion signal, thereby playing a role of accurate alarm, and providing protection for the safety of the firefighter.

Description

Technical Field

[0001] The invention relates to the technical field of safety protection equipment, in particular to a method for assisting in detecting motion to eliminate false alarms of a distress call device. Background Art

[0002] The firefighter's distress call device is an audible and visual alarm device worn by firefighters when entering and leaving a fire scene. According to the safety standards in "GBT 27900-2011 Firefighter's Distress Call Device", if a firefighter does not move for 30 consecutive seconds, an audible and visual alarm will automatically sound, thereby protecting and rescuing the endangered firefighter in time.

[0003] However, in some usage scenarios, firefighters may perform rescue operations while not exercising, and the firefighter distress call device may not provide effective protection, which may easily lead to false alarms and affect the normal operations of firefighters. Summary of the invention

[0004] The purpose of the present invention is to provide a method for assisting in detecting movement to eliminate false alarms of a distress call device, which is combined with a wristband to detect the movement status of firefighters, thereby playing a role in accurate alarm and providing protection for the safety of firefighters.

[0005] In a first aspect, an embodiment of the present invention provides a method for assisting in measuring motion to eliminate false alarms of a distress call device, wherein the distress call device comprises a distress call device body worn on a firefighter's body and a bracelet worn on the firefighter's wrist, wherein the bracelet comprises a first acceleration sensor and a first wireless processor chip, wherein the distress call device body comprises a second acceleration sensor, a second wireless processor chip, a counter and an alarm, wherein the counter is respectively connected to the second acceleration sensor, the second wireless processor chip and the alarm, and wherein the method comprises:

[0006] The motion signal of the firefighter's wrist is collected in real time by the first acceleration sensor, and when the motion signal is collected, a control signal is sent to the main body of the distress call device by the first wireless processor chip;

[0007] The second acceleration sensor collects the motion signal of the firefighter's body part in real time, and counts the motion signal when no motion signal of the firefighter's body part is collected;

[0008] When the count data reaches a preset value, the alarm is controlled to issue an alarm indication, and when the second wireless processor chip receives a control signal sent by the first wireless processor chip, the count data is reset.

[0009] In combination with the first aspect, the embodiment of the present invention provides a first possible implementation manner of the first aspect, wherein the method further includes:

[0010] The motion signal collected by the bracelet and the counting data of the counter are matched with the preset motion posture model data to determine the current motion posture of the firefighter. If the current motion posture is in an abnormal state, the alarm is controlled to operate.

[0011] In combination with the first aspect, an embodiment of the present invention provides a second possible implementation of the first aspect, wherein the wristband further includes a vital sign monitoring sensor for collecting vital sign information, and the method further includes:

[0012] The vital sign information is compared with preset vital sign information to determine the current vital sign status of the firefighter. If the vital sign status is abnormal, the alarm is controlled to operate.

[0013] In combination with the first aspect, an embodiment of the present invention provides a third possible implementation of the first aspect, wherein the step of matching the motion signal collected by the wristband and the count data of the counter with preset motion posture model data to determine the current motion posture of the firefighter includes:

[0014] The motion signal collected by the bracelet and the counting data of the counter are curve fitted according to the same dimensional time axis to obtain the motion fitting curve of the firefighter, which is matched with the posture curve in the preset motion posture model data, and the posture curve with a curve overlap greater than the overlap threshold is used as the current motion posture of the firefighter, and the current motion posture includes but is not limited to one or more of the following: standing, running, walking, going upstairs and going downstairs.

[0015] In combination with the first aspect, an embodiment of the present invention provides a fifth possible implementation of the first aspect, wherein the step of matching the motion signal collected by the wristband and the count data of the counter with preset motion posture model data to determine the current motion posture of the firefighter includes:

[0016] Each motion signal in the firefighter's motion fitting curve is compared with the motion posture point data in the preset motion posture model data. If the motion signal exceeds the currently expected posture or posture threshold range, the alarm is controlled to act.

[0017] The embodiment of the present invention provides a method for assisting in motion measurement to eliminate false alarms of a distress call device. The method collects the movement and posture of the firefighter by combining the distress call device body with a bracelet worn on the wrist. When the bracelet collects a motion signal but the distress call device body does not collect a motion signal, the counter is reset to avoid alarms in non-dangerous situations and ensure the safety and reliability of the firefighter's operation.

[0018] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A structural schematic diagram of a method for assisting in detecting motion to eliminate false alarms of a distress call device provided by an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of a method for assisting in detecting motion and eliminating false alarms of a distress call device provided by an embodiment of the present invention;

[0023] Figure 3 A schematic diagram of an application of a method for assisting motion detection to eliminate false alarms of a distress call device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0025] The firefighter distress call devices currently on the market are not smart enough. In some usage scenarios, such as when firefighters are in non-moving operations, they cannot effectively detect and cause false alarms, affecting the normal operations of firefighters, such as when firefighters are spraying water with water guns, when firefighters are using demolition tools to carry out demolition, etc.

[0026] According to the research of the inventor, during the operation, the firefighters may keep their bodies still but perform operations with their hands, that is, their hands are always in motion at this time. Therefore, the motion state of the hands can be detected.

[0027] Based on this, an embodiment of the present invention provides a method for assisting motion detection to eliminate false alarms of a distress call device, to assist the distress call device in detecting the movement posture of firefighters, thereby achieving accurate alarm and ensuring the safety of firefighters.

[0028] The following is a detailed description through examples.

[0029] Reference Figure 1 The embodiment of the present invention provides a method for assisting in measuring motion to eliminate false alarms of a distress call device, which is applied to a distress call device, the distress call device comprising a distress call device body worn on a body part of a firefighter (including but not limited to the shoulder or waist) and a bracelet worn on the wrist of the firefighter, the bracelet comprising a first acceleration sensor and a first wireless processor chip, the first acceleration sensor may adopt an ADXL362 chip, the first wireless processor chip may adopt an NRF52840 chip, the distress call device body comprises a second acceleration sensor, a second wireless processor chip, a counter and an alarm, the second acceleration sensor adopts an ADXL362 chip, and the second wireless processor chip adopts an NRF52832 chip;

[0030] The first acceleration sensor is connected to the first wireless processor chip, the first wireless processor chip is wirelessly connected to the second wireless processor chip, the second wireless processor chip and the second acceleration sensor are connected to the counter, and the counter is connected to the alarm; the counter may be integrated with a control device, such as a control chip STM32F103.

[0031] Figure 2 A schematic diagram of a method for assisting motion detection to eliminate false alarms of a distress call device provided by an embodiment of the present invention, referring to Figure 2 , the above method comprises the following steps:

[0032] Step 102, collecting the motion signal of the firefighter's wrist in real time through the first acceleration sensor, and sending a control signal to the main body of the distress call device through the first wireless processor chip when the motion signal is collected;

[0033] Step 104, collecting the motion signal of the firefighter's body part in real time through the second acceleration sensor, and counting the counter when no motion signal of the firefighter's body part is collected;

[0034] Step 106: When the count data reaches a preset value, control the alarm to issue an alarm indication, and reset the count data when the second wireless processor chip receives a control signal sent by the first wireless processor chip.

[0035] In a preferred embodiment of practical application, the firefighter's movements and postures are collected by combining the main body of the distress call device with a bracelet worn on the wrist. When the bracelet collects motion signals but the main body of the distress call device does not collect motion signals, the counter is reset to avoid alarms in dangerous situations and ensure the safety and reliability of firefighters' operations.

[0036] Among them, the low-power Bluetooth chip has ultra-high sensitivity and ultra-low power consumption. As an optional embodiment, Figure 3 As shown, the distress call device continuously detects the movement of the firefighter's body parts in real time. When the preset time is reached, such as 30 seconds or the counter count reaches the preset value 30, and no movement of the firefighter is detected, an audible and visual pre-alarm is issued to remind the firefighter. Once the motion signal of the firefighter's body movement is detected during the pre-alarm period, the pre-alarm is automatically released and the counting data is reset. If the motion signal of the body movement is detected during the period without the pre-alarm, the counting data is also automatically reset.

[0037] The wristband continuously detects the movement of the hand in real time. Once the wristband detects the motion signal of the hand movement, the motion signal of the hand movement is sent to the main body of the rescue device through wireless communication, and the rescue device resets the counting data or cancels the pre-alarm. As an optional embodiment, the main body of the rescue device is also used to match the motion signal collected by the wristband and the counting data of the counter with the preset action posture model data to determine the current action posture of the firefighter. If the current action posture is in an abnormal state, the alarm is controlled to act.

[0038] Here, the motion signal and count data corresponding to various motion postures are stored in the motion posture model. The motion signal and count data collected by the main body of the emergency call device are used to determine the current motion posture of the firefighter according to the motion posture model. In addition, each posture in the motion posture model carries a corresponding posture label, such as abnormal and normal. The user can also determine whether the current firefighter's motion posture is abnormal.

[0039] In some embodiments, the method further comprises:

[0040] The motion signal collected by the bracelet and the counting data of the counter are matched with the preset motion posture model data to determine the current motion posture of the firefighter. If the current motion posture is in an abnormal state, the alarm is controlled to operate.

[0041] Among them, the vital sign monitoring sensor includes but is not limited to a heart rate monitoring sensor, an ECG monitoring sensor, an accelerometer, a blood pressure sensor, etc. The vital sign information includes but is not limited to heart rate, blood oxygen, number of steps, blood pressure, and electrocardiogram signals.

[0042] As an optional embodiment, the main body of the rescue device or the bracelet is also used to match the motion signal collected by the bracelet and the counting data of the counter with the preset motion posture model data in the aforementioned embodiment, and the step of determining the current motion posture of the firefighter includes: performing curve fitting according to the same dimensional time axis to obtain the motion fitting curve of the firefighter, matching it with the posture curve in the preset motion posture model data, and taking the posture curve with a curve overlap greater than an overlap threshold as the current motion posture of the firefighter, and the current motion posture includes but is not limited to one or more of the following: standing, running, walking, going upstairs and going downstairs.

[0043] Among them, the main body of the distress call can perform curve fitting based on the motion signal and counting data on the same dimensional time axis to determine the degree of overlap with the curve in the preset motion posture model data. For example, if the first curve overlaps by half and the second curve overlaps by one third, the motion posture corresponding to the first curve is the current motion posture.

[0044] As an optional embodiment, the step of matching the motion signal collected by the wristband and the count data of the counter with the preset motion posture model data to determine the current motion posture of the firefighter further includes:

[0045] Each motion signal in the firefighter's motion fitting curve is compared with the motion posture point data in the preset motion posture model data. If the motion signal exceeds the currently expected posture or posture threshold range, the alarm is controlled to act.

[0046] Here, the motion signals and count data corresponding to each motion posture are classified in the preset motion posture model data, that is, the current expected posture or posture threshold range includes motion signal range A and count data range B, and the abnormal posture includes motion signal range C and count data range D. If the current motion signal exceeds the threshold range of motion signal range A, the alarm is controlled to operate.

[0047] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0048] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0049] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, 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 communication interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0050] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0051] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0052] Finally, it should be noted that the above-described embodiments are only specific implementation methods of the present invention, which are used to illustrate the technical solutions of the present invention rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the aforementioned embodiments within the technical scope disclosed by the present invention, or can easily conceive of changes, or make equivalent replacements for some of the technical features therein. Such modifications, changes or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the protection scope of the present invention.

Claims

1. A method for assisting motion detection to eliminate false alarms of a distress call device, characterized in that: The method is applied to a call device for help, the call device includes a call device body worn on a firefighter's body and a bracelet worn on the firefighter's wrist, the bracelet includes a first acceleration sensor and a first wireless processor chip, the call device body includes a second acceleration sensor, a second wireless processor chip, a counter and an alarm, the counter is respectively connected to the second acceleration sensor, the second wireless processor chip and the alarm, and the method includes: The motion signal of the firefighter's wrist is collected in real time by the first acceleration sensor, and when the motion signal is collected, a control signal is sent to the main body of the distress call device by the first wireless processor chip; The second acceleration sensor collects the motion signal of the firefighter's body part in real time, and counts the motion signal when no motion signal of the firefighter's body part is collected; When the count data reaches a preset value, the alarm is controlled to issue an alarm indication, and when the second wireless processor chip receives a control signal sent by the first wireless processor chip, the count data is reset; The method further includes: matching the motion signal collected by the wristband and the count data of the counter with preset motion posture model data to determine the current motion posture of the firefighter, and if the current motion posture is in an abnormal state, controlling the alarm to act; The step of matching the motion signal collected by the wristband and the count data of the counter with the preset motion posture model data to determine the current motion posture of the firefighter includes: The main body of the rescue device or the wristband is also used to perform curve fitting on the motion signal collected by the wristband and the counting data of the counter according to the same dimensional time axis to obtain the motion fitting curve of the firefighter, match it with the posture curve in the preset motion posture model data, and take the posture curve with a curve overlap greater than an overlap threshold as the current motion posture of the firefighter, and the current motion posture includes one or more of the following: standing, running, walking, going upstairs and going downstairs.

2. The method of eliminating false alarms of a distress caller by assisting motion detection according to claim 1, characterized in that: The wristband also includes a vital sign monitoring sensor for collecting vital sign information. The method also includes: The vital sign information is compared with preset vital sign information to determine the current vital sign status of the firefighter. If the vital sign status is abnormal, the alarm is controlled to operate.

3. The method of eliminating false alarms of a distress caller by assisting motion detection according to claim 1, characterized in that: The step of matching the motion signal collected by the wristband and the count data of the counter with the preset motion posture model data to determine the current motion posture of the firefighter also includes: Each motion signal in the firefighter's motion fitting curve is compared with the motion posture point data in the preset motion posture model data. If the motion signal exceeds the currently expected posture or posture threshold range, the alarm is controlled to act.

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