An intelligent distress alarm device for preventing falls of the elderly

Abstract

The application discloses an intelligent help-seeking alarm device for preventing the elderly from falling down, which comprises a bed pressure monitoring unit, a wheeled walking aid, a vehicle body ground locking assembly, a walking aid tension sensing alarm unit, a magnetic type double auxiliary bracelet, a wearable intelligent airbag vest and a central control host.

Description

Technical Field

[0001] This invention relates to the field of intelligent monitoring equipment for the elderly, and in particular to an intelligent emergency alarm device for preventing falls in the elderly. Background Technology

[0002] As the population ages, the risk of falls among the elderly continues to rise, and falls have become one of the main causes of fractures, traumatic brain injuries, and accidental deaths in the elderly. Currently, various fall prevention devices are available on the market, mainly categorized into three types: wearable posture detection devices, walking aids, and bedside monitoring devices. Wearable posture detection devices often rely on a single accelerometer to identify fall states, only issuing an alarm after a fall occurs, unable to provide physical cushioning protection at the moment of the fall. Furthermore, the sensor's recognition logic is simple, and bending, squatting, or sitting movements by the elderly can easily trigger false alarms, resulting in a poor user experience. Walking aids are mainly traditional four-wheeled walking aids, providing only physical support and lacking fall detection and alarm capabilities. Some walking aids with added tension sensors can only detect when the hand is released, unable to link with other protective devices to form a complete protective chain. Bedside monitoring devices often use pressure blankets to monitor the elderly's movement out of bed, only providing reminders to get out of bed, unable to cover the risk of falls during walking, and are independent of other monitoring devices, with no data sharing. Existing fall prevention devices are functionally fragmented, have limited sensing capabilities, and lack a comprehensive closed-loop protection system that covers everything from early warning of getting up from bed and monitoring the walking process to cushioning the fall. They cannot achieve multi-sensor joint verification of fall status, resulting in a high false alarm rate. Furthermore, they lack physical cushioning structures for the fall, making it difficult to effectively reduce the severity of injuries caused by falls and failing to meet the actual needs of elderly protection in homes and nursing homes. Summary of the Invention

[0003] The purpose of this invention is to provide an intelligent emergency alarm device for preventing falls in the elderly, in order to solve the problems existing in the prior art.

[0004] To achieve the above objectives, the present invention provides the following solution: The present invention provides an intelligent emergency alarm device for preventing falls in the elderly, comprising: A bed pressure monitoring unit is laid on the surface of a mattress. The bed pressure monitoring unit includes a flexible pressure blanket and a multi-zone pressure sensing matrix, with the pressure sensing matrix embedded inside the pressure blanket. A wheeled walking aid, wherein the wheeled walking aid is set on the ground next to the bed, the wheeled walking aid includes a vehicle frame and a set of wheels, the set of wheels being installed at the bottom of the vehicle frame; A vehicle body floor locking assembly is fixed to the bedside floor. The vehicle body floor locking assembly includes a supporting base plate, a guide positioning groove, and an electromagnetic adsorption fixing block. The guide positioning groove is opened on the upper surface of the supporting base plate, and the electromagnetic adsorption fixing block is embedded in the supporting base plate. A walking assistance tension sensing alarm unit is detachably sleeved on the handle of the wheeled walking aid. The walking assistance tension sensing alarm unit includes a storage compartment, a guide roller assembly, an elastic pull rope, a tension sensor, and a magnetic adsorption positioning plate. The guide roller assembly is installed inside the storage compartment, the elastic pull rope is wound around the guide roller assembly, the tension sensor is fixed to the inner wall of the storage compartment, and the magnetic adsorption positioning plate is connected to the end of the elastic pull rope. A magnetic dual-assistance bracelet is worn on the left and right wrists respectively. The magnetic dual-assistance bracelet includes a ring body and a permanent magnet adsorption piece, which is fixed to the outer side of the ring body. A wearable smart airbag vest is worn on the human torso. The wearable smart airbag vest includes a vest body, a posture sensing module, a protective airbag assembly, and a high-pressure inflation component. The posture sensing module is embedded inside the vest body, the protective airbag assembly is sewn into the inner layer of the vest body, and the high-pressure inflation component is fixed to the side of the vest body. The central control host is wirelessly connected to the bed pressure monitoring unit, the walking assistance tension sensing alarm unit, and the wearable smart airbag vest.

[0005] According to the intelligent emergency alarm device for preventing falls in the elderly provided by the present invention, the guide positioning groove is a V-shaped groove structure, the V-shaped groove is arranged through the length direction of the supporting base plate, the electromagnetic adsorption fixing block is disposed at the center position of the bottom of the V-shaped groove, and the upper surface of the electromagnetic adsorption fixing block is flush with the upper surface of the supporting base plate.

[0006] According to the present invention, the intelligent emergency alarm device for preventing falls in the elderly includes a storage compartment comprising a compartment shell and a compartment cover, the compartment cover being fastened to the opening side of the compartment shell, the guide roller assembly comprising an upper row of rollers and a lower row of rollers, the upper row of rollers and the lower row of rollers being arranged vertically correspondingly, the elastic pull rope passing between the upper row of rollers and the lower row of rollers, and the tension sensor being fixed to the inner wall of the compartment shell and connected to the end of the elastic pull rope.

[0007] According to the present invention, the intelligent emergency alarm device for preventing falls in the elderly includes an elastic pull rope comprising a rubber elastic section and a nylon pull section, wherein the rubber elastic section and the nylon pull section are connected end to end; an inflatable rubber bladder is provided inside the rollers of the guide roller assembly; and an electric piston assembly is provided inside the storage compartment, wherein the electric piston assembly is connected to the air passage of the inflatable rubber bladder.

[0008] According to the present invention, the intelligent emergency alarm device for preventing falls in the elderly includes a magnetic adsorption positioning disc with a circular structure. The magnetic adsorption positioning disc has a radial through-groove on its surface. The end of the elastic pull rope is ball-jointed to the inner wall of the radial through-groove. The magnetic adsorption positioning disc has a push switch on both its upper and lower surfaces. The outer side of the ring has a D-shaped detachment groove. A miniature Bluetooth signal transmitter is installed inside the ring.

[0009] According to the intelligent emergency alarm device for preventing falls in the elderly provided by the present invention, the vest body includes a breathable inner layer, a cushioning sponge middle layer and a wear-resistant outer layer. The breathable inner layer, the cushioning sponge middle layer and the wear-resistant outer layer are sequentially stacked and sewn from the inside to the outside. The posture sensing module is embedded inside the cushioning sponge middle layer, and the protective airbag assembly is sewn between the breathable inner layer and the cushioning sponge middle layer.

[0010] According to the intelligent emergency alarm device for preventing falls in the elderly provided by the present invention, the protective airbag assembly includes a front torso airbag and a neck-encircling airbag. The front torso airbag is distributed in the chest and abdomen area on the front side of the vest body, and the neck-encircling airbag is housed in a shoulder-mounted pocket of the vest body. The high-pressure inflation assembly includes a miniature high-pressure gas cylinder, an electrically controlled inflation valve, and a rapid gas generator. The electrically controlled inflation valve is connected to the outlet of the miniature high-pressure gas cylinder, and the rapid gas generator is connected to the air circuit of the protective airbag assembly.

[0011] The intelligent emergency alarm device for preventing falls in the elderly provided by the present invention further includes a magnetic charging component. The magnetic charging component includes a charging base and a magnetic charging connector. The charging base is fixed to the side of the vehicle ground locking component. The magnetic charging connectors are respectively disposed at corresponding parts of the wheeled walking aid, the magnetic dual-assistance wristband, and the wearable intelligent airbag vest. The central control host includes an edge processing chip, a 4G communication module, and a local sound and light alarm. The edge processing chip, the 4G communication module, and the local sound and light alarm are integrated in the same housing.

[0012] The present invention discloses the following technical effects: This invention enables closed-loop protection across all scenarios, covering all high-risk scenarios such as getting up from bed and indoor walking assistance. It provides early warning for getting up through bed pressure monitoring, and combines walking assistance pull monitoring with airbag cushioning to form a complete protection chain, replacing the traditional single-node protection mode, filling the protection gap between bedridden and walking scenarios, and comprehensively covering the high-risk periods for falls during the elderly's daily activities.

[0013] This invention employs a dual-sensor verification mechanism combining tension and posture. By synchronously triggering two independent signals to determine the fall status, it filters out false trigger signals generated by non-fall actions such as bending over, squatting, and sitting down, significantly reducing the probability of airbag mis-inflation, reducing the ineffective consumption of high-pressure gas cylinder consumables, and improving the accuracy of fall detection and the reliability of equipment use.

[0014] This invention integrates physical cushioning and graded alarm functions. The airbags quickly deploy upon a fall to provide cushioning support for the torso and neck, reducing the risk of fractures and traumatic brain injury in elderly people with osteoporosis. The graded response mechanism distinguishes between three levels: warning, cushioning, and emergency care, taking into account both user comfort and safety, while simultaneously reducing the workload of caregivers. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 is a schematic diagram of the overall assembly structure of the intelligent emergency alarm device for preventing falls in the elderly according to the present invention; Figure 2 is a schematic diagram of the internal structure of the walking pull force sensing unit of the intelligent emergency alarm device for preventing falls in the elderly according to the present invention; Figure 3 is a schematic diagram of the magnetic dual-auxiliary wristband structure of the intelligent emergency alarm device for preventing falls in the elderly according to the present invention; Figure 4 is a schematic diagram of the magnetic adsorption positioning plate structure of the intelligent emergency alarm device for preventing falls in the elderly according to the present invention; Figure 5 is a schematic diagram of the layered cross-sectional structure of the intelligent airbag vest of the intelligent emergency alarm device for preventing falls in the elderly according to the present invention; Figure 6 is a schematic diagram of the neck-encircling airbag structure of the intelligent emergency alarm device for preventing falls in the elderly according to the present invention.

[0017] Among them, 100, bed pressure monitoring unit; 110, side edging of pressure blanket; 3, magnetic double auxiliary wristband; 220, walking aid handle; 221, handle release button; 210, storage compartment for walking aid tension sensor alarm unit; 200, wheeled walking aid frame; 1, walking aid seat; 2, walking aid wheel set; 700, magnetic adsorption positioning plate; 300, tension sensor; 500, electric piston control assembly; 400, elastic pull rope winding wheel; 4 10. Lower guide roller; 600. Upper guide roller; 031. Permanent magnet adsorption sheet; 710. Radial changing through groove; 720. Pull rope ball joint connection end; 12. Breathable inner layer; 13. Cushioning sponge middle layer; 14. Wear-resistant outer layer; 40. Protective airbag assembly; 51. Neck wrap airbag body; 52. Airbag fixing strap; 54. Airbag air passage duct; 55. Air passage fixing clip; 56. Miniature high-pressure gas cylinder; 57. Electrically controlled inflation valve; 58. Rapid gas generator. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] Reference Figures 1-6 This invention provides an intelligent emergency alarm device for preventing falls in the elderly, comprising: A bed pressure monitoring unit 100 is laid on the surface of the mattress. The bed pressure monitoring unit 100 includes a flexible pressure blanket and a multi-zone pressure sensing matrix. The pressure sensing matrix is ​​embedded inside the pressure blanket. A wheeled walking aid is placed on the floor next to the bed. The wheeled walking aid includes a frame and a set of wheels, with the set of wheels installed at the bottom of the frame. The vehicle body ground locking assembly is fixed to the bedside floor. The vehicle body ground locking assembly includes a bearing base plate, a guide positioning groove and an electromagnetic adsorption fixing block. The guide positioning groove is opened on the upper surface of the bearing base plate, and the electromagnetic adsorption fixing block is embedded in the bearing base plate. The walking assistance tension sensing alarm unit is detachably mounted on the handle of the wheeled walking aid. The walking assistance tension sensing alarm unit includes a storage compartment, a guide roller assembly, an elastic pull rope, a tension sensor 300, and a magnetic adsorption positioning plate 700. The guide roller assembly is installed inside the storage compartment, the elastic pull rope is wound around the guide roller assembly, the tension sensor 300 is fixed to the inner wall of the storage compartment, and the magnetic adsorption positioning plate 700 is connected to the end of the elastic pull rope. The magnetic dual-assistance bracelet 3 is worn on the left and right wrists respectively. The magnetic dual-assistance bracelet 3 includes a ring body and a permanent magnet adsorption piece 031, which is fixed to the outer side of the ring body. Wearable smart airbag vest, worn on the human torso, includes a vest body, a posture sensing module, a protective airbag group 40 and a high-pressure inflation component. The posture sensing module is embedded inside the vest body, the protective airbag group 40 is sewn into the inner layer of the vest body, and the high-pressure inflation component is fixed to the side of the vest body. The central control host is wirelessly connected to the bed pressure monitoring unit 100, the walking assistance tension sensor alarm unit, and the wearable smart airbag vest.

[0021] In the initial state, when the elderly person is lying in bed, the pressure sensing matrix of the bed pressure monitoring unit 100 continuously collects data on the pressure distribution of the human body while lying down. The electromagnetic adsorption fixing block of the vehicle body ground locking component is in an energized adsorption state, and the wheeled walking aid is fixed in the guide positioning groove of the supporting base plate. The entire system is in a low-power standby state. When the elderly person sits up and prepares to get out of bed, the pressure distribution on the surface of the pressure blanket changes. The pressure sensing matrix transmits the pressure change signal to the central control host. The host sends an unlocking command to the vehicle body ground locking component, the electromagnetic adsorption fixing block is de-energized and releases its adsorption, the wheeled walking aid is unlocked, and at the same time, the host triggers a prompt signal to guide the elderly person to wear the magnetic dual auxiliary wristband 3 and connect the wristband to the magnetic adsorption positioning plate 700 of the walking aid pull force sensing alarm unit. During the elderly person's normal walking, the elastic pull rope remains in a stable tension state, the tension sensor 300 continuously collects the tension value, and the posture sensing module of the wearable smart airbag vest collects human posture data in real time. Both sets of data are transmitted synchronously to the central control host, and the system maintains a normal monitoring state. When an elderly person loses balance and is about to fall, their hand detaches from the walker handlebar 220, causing a sudden change in the tension of the elastic cord. The tension sensor 300 transmits this sudden change signal to the main unit. Simultaneously, the posture sensor module detects that the body's tilt angle and fall acceleration have reached a set threshold and sends this information to the main unit. Upon receiving these two synchronized trigger signals, the main unit sends a start command to the high-pressure inflation assembly. The electronically controlled inflation valve 57 opens, and the high-pressure gas in the miniature high-pressure cylinder 56 is rapidly inflated into the protective airbag assembly 40 via the rapid gas generator 58. The torso front airbag and the neck surround airbag deploy simultaneously to form a cushioning structure. At the same time, the main unit activates a local audible and visual alarm. If no reset signal is received from the handlebar release button 221 within a preset time after the airbags have deployed, the central control unit pushes location information and vital sign data to a preset contact via the 4G communication module and triggers an emergency call. After the elderly person returns to the bed and sits down, the pressure sensing matrix detects that the pressure distribution has returned to the lying position. The main unit sends a locking command to the ground locking component of the vehicle body, and the electromagnetic adsorption fixing block is re-energized to adsorb the wheeled walking vehicle. The entire system is then reset to standby mode.

[0022] The scheme was further optimized by designing the positioning groove as a V-shaped groove structure. The V-shaped groove runs through the length of the supporting base plate, and the electromagnetic adsorption fixing block is located at the center of the bottom of the V-shaped groove. The upper surface of the electromagnetic adsorption fixing block is flush with the upper surface of the supporting base plate.

[0023] The supporting base plate is fixed to the floor beside the bed. A V-shaped through-slot is arranged along the direction the walker is pushed in, with the slot opening wider than the bottom. When the wheeled walker moves towards the locked position, the wheels automatically align with the center of the slot bottom along the inclined sidewalls of the V-shaped slot, achieving automatic positioning and correction. An electromagnetic adsorption fixing block is embedded in the center of the bottom of the V-shaped slot. When energized, it generates magnetic force to attract the metal components at the bottom of the walker, fixing it in the slot to prevent slippage. When de-energized, the magnetic force disappears, and the walker can be pushed out freely along the V-shaped slot. The upper surface of the electromagnetic block is flush with the upper surface of the supporting base plate, avoiding protruding structures that obstruct wheel movement and ensuring smooth, unimpeded movement of the walker in and out of the slot.

[0024] The design is further optimized. The storage compartment includes a storage shell and a cover. The cover is fastened to the opening side of the storage shell. The guide roller assembly includes an upper row of rollers and a lower row of rollers. The upper and lower rows of rollers are arranged vertically and vertically. An elastic pull rope passes between the upper and lower rows of rollers. A tension sensor 300 is fixed to the inner wall of the storage shell and connected to the end of the elastic pull rope.

[0025] The outer shell of the chamber serves as the main support for the tension sensing unit. The chamber cover, when fastened to the open side, forms a closed cavity, providing dust protection for the internal rollers and pull rope. The upper and lower rows of rollers correspond one-to-one, forming clamping channels. The elastic pull rope passes between the two rows of rollers, with the rollers providing support and guidance to prevent bending and knotting. The tension sensor 300 is fixed to the inner wall of the chamber and directly connected to the end of the pull rope. The tension force on the pull rope is directly transmitted to the sensing end of the tension sensor 300, ensuring the accuracy of tension data acquisition. The rolling friction of the rollers replaces the sliding friction between the pull rope and the chamber wall, reducing tension loss and component wear.

[0026] The design is further optimized. The elastic rope includes a rubber elastic section and a nylon pulling section. The rubber elastic section and the nylon pulling section are connected end to end. The rollers of the guide roller assembly are equipped with an inflatable rubber bladder. The storage compartment is equipped with an electric piston assembly. The electric piston assembly is connected to the air passage of the inflatable rubber bladder.

[0027] The elastic section of the elastic drawstring has elastic stretching capacity, which can adapt to the length changes caused by arm swing during walking. The nylon pull section has high wear resistance, bears the main pulling force, and is not easily worn. The two sections are joined end to end, combining elastic cushioning and durability. The inflatable rubber bladder inside each roller provides the roller with variable radial expansion. When the electric piston assembly inflates the bladder through the air passage, the bladder expands, increasing the outer diameter of the roller. This increases the clamping pressure of the upper and lower rollers on the drawstring, increasing the drag resistance of the drawstring. When the electric piston deflates, the bladder contracts, reducing the clamping pressure and damping. By adjusting the inflation and deflation, it can be adapted to the usage needs of elderly people with different arm strengths.

[0028] The design is further optimized. The magnetic adsorption positioning disk 700 has a circular structure. The surface of the magnetic adsorption positioning disk 700 has a radial face-changing groove 710. The end of the elastic pull rope is ball-connected to the inner wall of the radial face-changing groove 710. The magnetic adsorption positioning disk 700 is equipped with a push switch on both the upper and lower sides. A D-shaped detachment groove is provided on the outer side of the ring. A miniature Bluetooth signal transmitter is provided inside the ring.

[0029] The 700 magnetic positioning disc has a circular structure with radial grooves running through both the top and bottom surfaces. The pull cord is connected to the inner wall of the groove via a ball joint structure, which can adapt to any angle of deflection, ensuring that the pull cord remains in a smooth direction after the bracelet is attached. Both the top and bottom surfaces of the positioning disc have magnetic attraction capabilities and are equipped with push-button switches. The switch signal is triggered when the bracelet is attached from either side, allowing for left- or right-hand interchangeability without distinguishing between the front and back. The D-shaped removal slot on the bracelet body facilitates quick and easy removal and attachment. A miniature Bluetooth signal transmitter inside the bracelet continuously sends an online indicator, and the main unit determines whether the bracelet is in an attached state by the signal connection status.

[0030] The design is further optimized. The vest body includes a breathable inner layer 12, a cushioning sponge middle layer 13, and a wear-resistant outer layer 14. The breathable inner layer 12, the cushioning sponge middle layer 13, and the wear-resistant outer layer 14 are layered and sewn together from the inside to the outside. The posture sensing module is embedded inside the cushioning sponge middle layer 13, and the protective airbag assembly 40 is sewn between the breathable inner layer 12 and the cushioning sponge middle layer 13.

[0031] The vest features a three-layer overlapping and stitched structure. The innermost breathable inner layer 12 directly contacts the skin, providing breathability and sweat-wicking properties to enhance wearing comfort. The middle cushioning sponge layer 13 has a certain thickness and elasticity, providing space for the posture sensing module to be embedded and installing, cushioning the impact of external collisions on the sensors, and providing soft support for the internal airbags. The outermost abrasion-resistant outer layer 14 has scratch-resistant and abrasion-resistant properties, increasing the overall lifespan of the vest. The protective airbag assembly 40 is sewn between the breathable inner layer 12 and the cushioning sponge layer 13, ensuring that it can conform to the body inward to form a cushion when inflated, while preventing the airbags from directly contacting the outer layer and causing wear. The three-layer structure is fixed together by stitching, ensuring that the positions of each component are stable and do not shift.

[0032] The design is further optimized. The protective airbag assembly 40 includes a front torso airbag and a neck surround airbag. The front torso airbag is distributed in the chest and abdomen area on the front of the vest body. The neck surround airbag is stored in the shoulder and back pocket of the vest body. The high-pressure inflation assembly includes a miniature high-pressure gas cylinder 56, an electrically controlled inflation valve 57, and a rapid gas generator 58. The electrically controlled inflation valve 57 is connected to the outlet of the miniature high-pressure gas cylinder 56. The rapid gas generator 58 is connected to the air passage of the protective airbag assembly 40.

[0033] The front torso airbags are distributed in the chest and abdomen area, corresponding to the main impact point on the front of the torso during a fall. The neck wrap-around airbag is housed in a shoulder-mounted bag and, after inflation, wraps around the neck and head. Upon triggering the inflation command, the electronically controlled inflation valve 57 opens, and high-pressure gas from the miniature high-pressure gas cylinder 56 flows out rapidly. After being expanded and accelerated by the rapid gas generator 58, it is simultaneously delivered to the front torso airbags and the neck wrap-around airbags. Both airbags expand and deploy rapidly and synchronously, providing impact cushioning for the torso and head and neck, respectively. The high-pressure gas cylinder, electronically controlled valve, and gas generator are connected in series to form a complete air circuit. The electronically controlled valve controls the on / off of the air circuit, and the gas generator ensures that the inflation speed meets the instantaneous cushioning requirements.

[0034] Further optimization of the solution also includes a magnetic charging component, which includes a charging base and a magnetic charging connector. The charging base is fixed to the side of the vehicle ground locking component, and the magnetic charging connectors are respectively set on the corresponding parts of the wheeled walking aid, the magnetic dual auxiliary wristband 3, and the wearable smart airbag vest. The central control host includes an edge processing chip, a 4G communication module, and a local sound and light alarm, which are integrated into the same housing.

[0035] The charging base of the magnetic charging assembly is fixed to the side of the vehicle's locking assembly. When the wheeled walking aid is parked in the locking slot, the magnetic charging connector on the walking aid automatically aligns and attaches to the charging base, enabling automatic power replenishment. The magnetic charging connectors of the magnetic dual-assistance wristband 3 and the wearable smart airbag vest can be directly connected to the charging base or the matching magnetic power supply, allowing charging without plugging or unplugging the interface, thus improving the convenience of power replenishment. The central control host integrates the edge processing chip, 4G communication module, and local audible and visual alarm into the same housing. The edge processing chip is responsible for processing various sensor signals and generating control commands, the 4G communication module is responsible for remote data transmission and emergency calls, and the local audible and visual alarm is responsible for on-site warnings. The integrated arrangement of these three components reduces the overall size and facilitates installation and deployment.

[0036] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0037] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A smart emergency alarm device for preventing falls in the elderly, characterized in that, include: A bed pressure monitoring unit (100) is laid on the surface of the mattress. The bed pressure monitoring unit (100) includes a flexible pressure blanket and a multi-zone pressure sensing matrix. The pressure sensing matrix is ​​embedded inside the pressure blanket. A wheeled walking aid, wherein the wheeled walking aid is set on the ground next to the bed, the wheeled walking aid includes a vehicle frame and a set of walking wheels, the set of walking wheels being installed at the bottom of the vehicle frame; A vehicle body floor locking assembly is fixed to the bedside floor. The vehicle body floor locking assembly includes a supporting base plate, a guide positioning groove, and an electromagnetic adsorption fixing block. The guide positioning groove is opened on the upper surface of the supporting base plate, and the electromagnetic adsorption fixing block is embedded in the supporting base plate. A walking assistance tension sensing alarm unit is detachably sleeved on the handle of the wheeled walking aid. The walking assistance tension sensing alarm unit includes a storage compartment, a guide roller assembly, an elastic pull rope, a tension sensor (300), and a magnetic adsorption positioning plate (700). The guide roller assembly is installed inside the storage compartment, the elastic pull rope is wound around the guide roller assembly, the tension sensor (300) is fixed to the inner wall of the storage compartment, and the magnetic adsorption positioning plate (700) is connected to the end of the elastic pull rope. A magnetic dual-assistance bracelet (3) is worn on the left and right wrists respectively. The magnetic dual-assistance bracelet (3) includes a ring body and a permanent magnet adsorption piece (031). The permanent magnet adsorption piece (031) is fixed to the outer side of the ring body. Wearable smart airbag vest, the wearable smart airbag vest is worn on the human torso, the wearable smart airbag vest includes a vest body, a posture sensing module, a protective airbag group (40) and a high-pressure inflation component, the posture sensing module is embedded inside the vest body, the protective airbag group (40) is sewn into the inner layer of the vest body, and the high-pressure inflation component is fixed to the side of the vest body; The central control host is wirelessly connected to the bed pressure monitoring unit (100), the walking assistance tension sensing alarm unit, and the wearable smart airbag vest.

2. The intelligent emergency alarm device for preventing falls in the elderly according to claim 1, characterized in that, The guide positioning groove is a V-shaped groove structure, which runs through the length of the supporting base plate. The electromagnetic adsorption fixing block is located at the center of the bottom of the V-shaped groove, and the upper surface of the electromagnetic adsorption fixing block is flush with the upper surface of the supporting base plate.

3. The intelligent emergency alarm device for preventing falls in the elderly according to claim 1, characterized in that, The storage compartment includes a storage shell and a cover. The cover is fastened to the opening side of the storage shell. The guide roller assembly includes an upper row of rollers and a lower row of rollers. The upper row of rollers and the lower row of rollers are arranged vertically and vertically respectively. The elastic pull rope passes between the upper row of rollers and the lower row of rollers. The tension sensor (300) is fixed to the inner wall of the storage shell and connected to the end of the elastic pull rope.

4. The intelligent emergency alarm device for preventing falls in the elderly according to claim 1, characterized in that, The elastic pull rope includes a rubber elastic section and a nylon pull section, with the rubber elastic section and the nylon pull section connected end to end. The rollers of the guide roller assembly are equipped with an inflatable rubber bladder inside the rollers, and the storage compartment is equipped with an electric piston assembly. The electric piston assembly is connected to the air passage of the inflatable rubber bladder.

5. The intelligent emergency alarm device for preventing falls in the elderly according to claim 1, characterized in that, The magnetic adsorption positioning disk (700) has a circular structure. The magnetic adsorption positioning disk (700) has a radial face-changing groove (710) on its surface. The end of the elastic pull rope is ball-jointed to the inner wall of the radial face-changing groove (710). The magnetic adsorption positioning disk (700) has a push switch on both the upper and lower sides. The outer side of the ring has a D-shaped detachment groove. The ring has a miniature Bluetooth signal transmitter inside.

6. The intelligent emergency alarm device for preventing falls in the elderly according to claim 1, characterized in that, The vest body includes a breathable inner layer (12), a cushioning sponge middle layer (13), and a wear-resistant outer layer (14). The breathable inner layer (12), the cushioning sponge middle layer (13), and the wear-resistant outer layer (14) are layered and sewn together from the inside to the outside. The posture sensing module is embedded inside the cushioning sponge middle layer (13). The protective airbag assembly (40) is sewn between the breathable inner layer (12) and the cushioning sponge middle layer (13).

7. The intelligent emergency alarm device for preventing falls in the elderly according to claim 1, characterized in that, The protective airbag assembly (40) includes a front torso airbag and a neck surround airbag. The front torso airbag is distributed in the chest and abdomen area on the front side of the vest body. The neck surround airbag is stored in the shoulder and back pocket of the vest body. The high-pressure inflation assembly includes a miniature high-pressure gas cylinder (56), an electrically controlled inflation valve (57), and a rapid gas generator (58). The electrically controlled inflation valve (57) is connected to the outlet of the miniature high-pressure gas cylinder (56). The rapid gas generator (58) is connected to the air passage of the protective airbag assembly (40).

8. The intelligent emergency alarm device for preventing falls in the elderly according to claim 1, characterized in that, It also includes a magnetic charging component, which includes a charging base and a magnetic charging connector. The charging base is fixed to the side of the vehicle ground locking component. The magnetic charging connectors are respectively set at the corresponding parts of the wheeled walking vehicle, the magnetic dual auxiliary wristband (3), and the wearable smart airbag vest. The central control host includes an edge processing chip, a 4G communication module, and a local sound and light alarm. The edge processing chip, the 4G communication module, and the local sound and light alarm are integrated in the same housing.

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