Mechanical trigger type lying posture alarm

Abstract

The utility model discloses a mechanical trigger type lying posture alarm, which comprises a shell, a motion trail constraint structure, a trigger body, a state detection module and an alarm circuit, the motion trail constraint structure is arranged in the shell and is provided with a track for the trigger body to move; the trigger body is movably arranged on the motion trail constraint structure and is controlled to move under the action of gravity generated by the posture change of the shell; the state detection module is arranged in a bottom area of the motion trail constraint structure and is used for detecting whether the trigger body reaches a bottom preset position or not and generating a trigger signal; and the alarm circuit is electrically connected with the state detection module and is used for starting alarm after receiving the trigger signal. The utility model solves the problems of high cost, complex structure, user privacy violation and the like of the traditional electronic scheme, and is suitable for the family scenes of suffocation prevention, baby milk choking prevention and the like.

Description

TECHNICAL FIELD

[0001] The utility model relates to health monitoring technical field, especially in a kind of mechanical trigger type bed posture alarm. BACKGROUND

[0002] Current in drunkenness anti-asphyxia, pregnant women prevent supine syndrome prevention, infantile anti-milk choking and other need to strictly limit the length of time lying at home health monitoring scene, existing monitoring technology has significant defects: traditional electronic sensor scheme such as pressure sensing mattress or biological radar monitoring equipment, although posture can be indirectly judged by pressure distribution or breathing signal, but its cost is high, and it is easy to be disturbed by pet or mattress displacement trigger false alarm, and it is difficult to adapt to small size users such as infants and young children;Visual monitoring scheme based on camera can identify lying posture, but it cannot meet the core needs of non-invasive, real-time monitoring in family scene due to privacy invasion, dependence on lighting conditions and data processing delay problems;Existing mechanical trigger device mainly uses spring type contact switch to realize alarm, but its mechanical components are complex, and the sensitivity is low, and contact failure is easy to occur due to spring fatigue or contact oxidation after long-term use, and only bed leaving state can be detected, and lying and non-lying posture cannot be distinguished, resulting in complete failure in family scene. Therefore, a mechanical alarm device with low cost, simple structure, zero privacy risk and distinguishable lying posture is needed. SUMMARY

[0003] The main purpose of the utility model is to provide a mechanical trigger type bed posture alarm, to solve the technical problems of high cost, complex structure and invasion of user privacy of existing bed posture monitoring technology.

[0004] To achieve the above object, the utility model provides a mechanical trigger type bed posture alarm, including shell, motion trajectory constraint structure, trigger body, state detection module and alarm circuit;The motion trajectory constraint structure is arranged in the shell, and has a track for the movement of the trigger body;The trigger body is movably arranged on the motion trajectory constraint structure, and is controlled to move by the gravity generated by the change of the posture of the shell;The state detection module is arranged at the bottom region of the motion trajectory constraint structure, and is used for detecting whether the trigger body reaches the bottom preset position and generating a trigger signal;The alarm circuit is electrically connected with the state detection module, and starts alarm after receiving the trigger signal.

[0005] Preferably, the state detection module includes two spaced apart conductive contact parts, and the trigger body is made of conductive material;When the trigger body reaches the bottom preset position of the motion trajectory constraint structure, the two conductive contact parts are contacted and the circuit is conducted at the same time, the trigger signal is generated and transmitted to the alarm circuit.

[0006] Preferably, the state detection module comprises at least one pair of photoelectric sensors, which are composed of a transmitting end and a receiving end, and are oppositely arranged on both sides of the bottom of the movement trajectory constraint structure; when the trigger body reaches the preset position at the bottom of the movement trajectory constraint structure, the light path from the transmitting end to the receiving end is blocked, a trigger signal is generated and transmitted to the alarm circuit.

[0007] Preferably, the state detection module comprises an electrical parameter sensor, which is a capacitive sensor or an inductive sensor; when the trigger body reaches the preset position at the bottom of the movement trajectory constraint structure, the electrical parameter sensor changes its electrical parameter, a trigger signal is generated and transmitted to the alarm circuit.

[0008] Preferably, the state detection module comprises a pressure sensor; when the trigger body reaches the preset position at the bottom of the movement trajectory constraint structure, the pressure sensor is pressed under the action of gravity, a trigger signal is generated and transmitted to the alarm circuit.

[0009] Preferably, the trigger body is a spherical body or a cylindrical body.

[0010] Preferably, the track for the movement of the trigger body in the movement trajectory constraint structure is a V-shaped track, a U-shaped track or an arc-shaped track.

[0011] Preferably, the movement trajectory constraint structure comprises a plurality of independent tracks arranged in parallel, each track is configured with an independent trigger body and a state detection module, and the alarm is triggered when any trigger body reaches the preset position at the bottom.

[0012] Preferably, the movement trajectory constraint structure comprises at least one independent track for detecting the front-back direction and at least one independent track for detecting the left-right direction, each track is configured with an independent trigger body and a state detection module, and the alarm is triggered when all trigger bodies reach the preset position at the bottom.

[0013] Preferably, the alarm circuit comprises a signal processing unit and an alarm unit; after the signal processing unit receives the trigger signal, if the high level lasts for more than a preset time, the alarm unit is triggered to alarm, and if the trigger signal is interrupted, the alarm unit immediately stops alarming.

[0014] Preferably, the signal processing unit is an FT62E21x chip.

[0015] Preferably, the alarm unit is a buzzer.

[0016] Preferably, the alarm circuit is powered by a button cell.

[0017] The utility model provides a kind of mechanical trigger type bed posture alarm, and the accurate detection of bed posture is realized by pure mechanical structure design, the complex circuit of traditional electronic sensor is saved, provides four replaceable modules of electric contact, photoelectric sensing, capacitance / inductance detection and pressure sensing as state detection module, cooperate the gravity-driven displacement of scrollable spherical ball or cylindrical trigger body in V-shaped, U-shaped or arc track, ensure that only in lying posture triggers alarm, effectively distinguish lateral recumbency, prone and other non-laying state;Through the design of multiple track parallel connection improves detection redundancy, avoid the false alarm caused by single point failure;Combined with the time delay control function of signal processing unit (such as FT62E21x chip) filter short time false trigger signal, and realize super long endurance by low-power buzzer and button cell power supply, while ensuring zero privacy risk (no camera, wireless transmission), with low cost, high reliability and immediate use of family adaptability solve the problem of high false alarm rate of traditional electronic sensor, short service life of mechanical device and privacy leakage, meet the core demand of safety monitoring in drunk anti-choking, baby anti-choking and other family scenes. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the drawings needed to be used in the embodiment or prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and those skilled in the art can obtain other drawings from the structures shown in the drawings without creating labor.

[0019] Figure 1 It is a structure schematic view of the utility model mechanical trigger type bed posture alarm.

[0020] Figure 2 It is the schematic diagram of the motion track constraint structure of the utility model.

[0021] Figure 3 It is the schematic diagram of the multiple track parallel connection of the motion track constraint structure of the utility model.

[0022] Figure 4 It is the structure schematic view of the photoelectric sensor of the utility model.

[0023] Figure 5 It is the structure schematic view of another motion track constraint structure of the utility model multiple track.

[0024] Figure 6 It is the structure schematic view of the capacitance / inductance sensor of the utility model.

[0025] Figure 7 It is the structure schematic view of another capacitance sensor of the utility model.

[0026] Figure 8 It is another structure schematic view of the capacitive sensor of the utility model;

[0027] Figure 9 It is structure schematic view of the pressure sensor of the utility model;

[0028] Figure 10 It is circuit schematic view of the mechanical trigger type bed posture alarm of the utility model.

[0029] In the drawing: 1 - shell, 2 - movement track constraint structure, 21 - track, 3 - trigger body, 4 - state detection module, 41 - conductive contact part, 42 - photoelectric sensor, 421 - photoelectric sensor transmitting end, 422 - photoelectric sensor receiving end, 43 - capacitance / inductance sensor, 431 - first electrode sheet, 432 - second electrode sheet, 433 - rotating shaft, 44 - pressure sensor, 5 - alarm circuit, 51 - signal processing unit, 52 - alarm unit, 53 - button cell.

[0030] The utility model purposes realization, functional characteristics and advantages will be further described with reference to the accompanying drawings in conjunction with embodiments. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0032] It should be noted that if the embodiments of the utility model involve directional indications, such as up, down, left, right, front, back, etc., the directional indications are only used to explain the relative position relationship, movement condition, etc. between components in a certain posture, and if the certain posture changes, the directional indications also change accordingly.

[0033] In addition, if the embodiments of the utility model involve descriptions such as "first", "second", etc., the descriptions of "first", "second", etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one feature. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, and is not within the protection scope required by the utility model.

[0034] As Figures 1 to 6 shown, a mechanical trigger type bed posture alarm, comprising a shell 1, a movement trajectory constraint structure 2, a trigger body 3, a state detection module 4 and an alarm circuit 5; the movement trajectory constraint structure 2 is arranged in the shell 1, and has a track for the movement of the trigger body 3; the trigger body 3 is movably arranged on the movement trajectory constraint structure 2, and is controlled to move by the gravity generated by the posture change of the shell 1; the state detection module 4 is arranged at the bottom region of the movement trajectory constraint structure 2, and is used for detecting whether the trigger body 3 reaches a bottom preset position and generating a trigger signal; the alarm circuit 5 is electrically connected with the state detection module 4, and starts alarm after receiving the trigger signal.

[0035] Preferably, in some specific embodiments, the state detection module 4 comprises two spaced-apart conductive contact parts 41, and the trigger body 3 is made of conductive material; when the trigger body 3 reaches the bottom preset position of the movement trajectory constraint structure 2, the trigger body 3 simultaneously contacts the two conductive contact parts 41 and conducts the circuit, generates a trigger signal and transmits the trigger signal to the alarm circuit 5.

[0036] Specifically, as Figures 1 to 3 shown, in an embodiment of the utility model, the movement trajectory constraint structure 2 is a V-shaped track, the included angle of the two side walls thereof is 150°, the two conductive contact parts 41 are metal sheets, the trigger body 3 is a metal ball, and the bottom preset position is the lowest point of the track reached by the trigger body under the action of gravity when the shell is horizontally placed, corresponding to the lying posture of the human body; when the measured human body is in the lying posture, the metal ball moves along the V-shaped track under the action of gravity and finally falls at the bottom of the V-shaped track and simultaneously contacts the metal sheets of the two conductive contact parts 41, thereby conducting the metal sheets on the two sides, so that the alarm circuit 5 detects the trigger signal and triggers the buzzer to sound; when the measured human body is inclined by more than a certain angle (for example, 15°), the metal ball rolls along the track and leaves the bottom, the circuit is disconnected and the alarm stops. It can be understood that, based on the trigger body-track adaptive design of the utility model, a person skilled in the art can make corresponding equivalent improvements according to the application scene, for example, the metal sheets of the conductive contact parts 41 are replaced by gold-plated copper sheets or conductive silicone contacts to improve the oxidation resistance, or the included angle of the two side walls of the V-shaped track is adjusted to 60°-150° to adapt to different body types of users, for example, the included angle is reduced to 80° in the baby bed scene; the material of the metal contact part 41 can be replaced by gold-plated copper sheets or silver-nickel alloy sheets to enhance the oxidation resistance, or a concave-convex texture is formed on the surface by stamping to increase the contact area with the metal ball; the material of the metal ball of the trigger body 3 can be selected from stainless steel, tungsten steel or copper-plated ceramic, and the rolling response speed of the metal ball in the V-shaped track is optimized by adjusting the density.

[0037] Preferably, in some specific embodiments, the state detection module 4 includes at least one pair of photoelectric sensors 42, each photoelectric sensor 42 consisting of a transmitter 421 and a receiver 422, which are disposed opposite to each other on both sides of the bottom of the motion trajectory constraint structure 2; when the trigger 3 reaches the preset position at the bottom of the motion trajectory constraint structure 2, it blocks the optical path from the transmitter 421 to the receiver 422, generates a trigger signal and transmits it to the alarm circuit 5.

[0038] Specifically, such as Figures 4 to 5 As shown, in one embodiment of this utility model, the motion trajectory constraint structure 2 is a V-shaped track with an included angle of 150° between its two side walls. The trigger body 3 is a rubber ball. The photoelectric sensor 42 is an infrared through-beam sensor, with the transmitting end 421 and the receiving end 422 symmetrically embedded on both sides of the transparent observation window at the bottom of the track. When the human body being tested is in a lying position, the shell 1 remains horizontal. Due to gravity, the black rubber ball moves along the V-shaped track and eventually falls to the bottom of the V-shaped track, completely blocking the infrared light path from the transmitting end 421 to the receiving end 422. The photoelectric sensor 42 outputs a low-level signal to the alarm circuit 5, which is amplified by the conditioning circuit and triggers the buzzer to sound continuously. When the human body being tested tilts beyond a certain angle (e.g., 15°), the rubber ball rolls along the side wall of the V-shaped track to a non-bottom area, the light path is restored, and the alarm stops. It is understood that those skilled in the art can make corresponding equivalent improvements based on the trigger-track adaptation design of this utility model, depending on the application scenario. For example, the infrared through-beam sensor can be replaced with a laser TOF sensor to improve positioning accuracy, or a reflective photoelectric sensor can be used to detect the position by the change in the reflectivity of the trigger surface; or a magnetic trigger can be used with a Hall sensor to achieve magnetic induction triggering, which eliminates the need for a transparent observation window.

[0039] Preferably, in some specific embodiments, the state detection module 4 includes an electrical parameter sensor 43, which is a capacitive sensor or an inductive sensor; when the trigger body 3 reaches the preset position at the bottom of the motion trajectory constraint structure 2, it causes a change in the electrical parameters of the electrical parameter sensor 43, generates a trigger signal, and transmits it to the alarm circuit 5.

[0040] Specifically, such as Figure 6As shown in the utility model one embodiment, the motion trajectory constraint structure 2 is V type track, its two side wall included angle is 150 °, the trigger body 3 is metal ball, the state detection module 4 is the electrical parameter sensor 43 of setting in track bottom one side. Among them, electrical parameter sensor 43 can select capacitive sensor, such as finished product capacitive proximity switch such as Omron E2K-X series or Schneider XS6 series, when trigger body 3 metal ball rolls to the vicinity of electrical parameter sensor 43, the capacitance value mutation triggers alarm;Electrical parameter sensor 43 can also use finished product inductive proximity switch, inductive value changes when metal ball approaches trigger alarm. When the user lies flat, the V-shaped track is in a horizontal state, the stainless steel ball rolls to the bottom of the track under the action of gravity, enters the effective detection area of the capacitive / inductive sensor, triggers the sensor to output alarm information.

[0041] As shown in the utility model one embodiment, the motion trajectory constraint structure 2 is V type track, its two side wall included angle is 150 °, the trigger body 3 is metal ball, the state detection module 4 is the electrical parameter sensor 43 of setting in track bottom one side. Among them, electrical parameter sensor 43 can select capacitive sensor, such as finished product capacitive proximity switch such as Omron E2K-X series or Schneider XS6 series, when trigger body 3 metal ball rolls to the vicinity of electrical parameter sensor 43, the capacitance value mutation triggers alarm;Electrical parameter sensor 43 can also use finished product inductive proximity switch, inductive value changes when metal ball approaches trigger alarm. When the user lies flat, the V-shaped track is in a horizontal state, the stainless steel ball rolls to the bottom of the track under the action of gravity, enters the effective detection area of the capacitive / inductive sensor, triggers the sensor to output alarm information. Figure 7 As shown in the utility model one embodiment, the motion trajectory constraint structure 2 is V type track, its two side wall included angle is 150 °, the trigger body 3 is metal ball, the state detection module 4 is the electrical parameter sensor 43 of setting in track bottom one side. Among them, electrical parameter sensor 43 can select capacitive sensor, such as finished product capacitive proximity switch such as Omron E2K-X series or Schneider XS6 series, when trigger body 3 metal ball rolls to the vicinity of electrical parameter sensor 43, the capacitance value mutation triggers alarm;Electrical parameter sensor 43 can also use finished product inductive proximity switch, inductive value changes when metal ball approaches trigger alarm. When the user lies flat, the V-shaped track is in a horizontal state, the stainless steel ball rolls to the bottom of the track under the action of gravity, enters the effective detection area of the capacitive / inductive sensor, triggers the sensor to output alarm information.

[0042] As shown in the utility model one embodiment, the motion trajectory constraint structure 2 is V type track, its two side wall included angle is 150 °, the trigger body 3 is metal ball, the state detection module 4 is the electrical parameter sensor 43 of setting in track bottom one side. Among them, electrical parameter sensor 43 can select capacitive sensor, such as finished product capacitive proximity switch such as Omron E2K-X series or Schneider XS6 series, when trigger body 3 metal ball rolls to the vicinity of electrical parameter sensor 43, the capacitance value mutation triggers alarm;Electrical parameter sensor 43 can also use finished product inductive proximity switch, inductive value changes when metal ball approaches trigger alarm. When the user lies flat, the V-shaped track is in a horizontal state, the stainless steel ball rolls to the bottom of the track under the action of gravity, enters the effective detection area of the capacitive / inductive sensor, triggers the sensor to output alarm information. Figure 8 As shown in the utility model one embodiment, the motion trajectory constraint structure 2 is V type track, its two side wall included angle is 150 °, the trigger body 3 is metal ball, the state detection module 4 is the electrical parameter sensor 43 of setting in track bottom one side. Among them, electrical parameter sensor 43 can select capacitive sensor, such as finished product capacitive proximity switch such as Omron E2K-X series or Schneider XS6 series, when trigger body 3 metal ball rolls to the vicinity of electrical parameter sensor 43, the capacitance value mutation triggers alarm;Electrical parameter sensor 43 can also use finished product inductive proximity switch, inductive value changes when metal ball approaches trigger alarm. When the user lies flat, the V-shaped track is in a horizontal state, the stainless steel ball rolls to the bottom of the track under the action of gravity, enters the effective detection area of the capacitive / inductive sensor, triggers the sensor to output alarm information.

[0043] Preferably, in some embodiments, the state detection module 4 comprises a pressure sensor 44; when the trigger body 3 reaches the preset position at the bottom of the movement trajectory constraint structure 2, the pressure sensor 44 is pressed under the action of gravity, a trigger signal is generated and transmitted to the alarm circuit 5.

[0044] Specifically, as shown in Figure 9 the movement trajectory constraint structure 2 is a V-shaped track, the included angle of the two side walls is 150°, the trigger body 3 is a glass ball, and the state detection module 4 selects a piezoresistive sensor such as the Tekscan FlexiForce series and is arranged on the bottom plane of the track, the sensing surface is flush with the bottom surface of the track. When the user lies flat, the V-shaped track is in a horizontal state, the glass ball of the trigger body 3 rolls to the bottom groove under the action of gravity, vertically presses the sensing surface of the pressure sensor 44, the resistance value of the sensor decreases linearly with the pressure, and the voltage value is converted by the voltage dividing circuit. When the voltage value is less than the preset threshold, the alarm is triggered.

[0045] Preferably, in some embodiments, the movement trajectory constraint structure 2 comprises a plurality of independent tracks arranged in parallel, each track is configured with an independent trigger body 3 and a state detection module 4, and the alarm is triggered when any trigger body 3 reaches the preset position at the bottom.

[0046] As can be understood, as shown in Figure 1 and Figure 3 the parallel design of multiple tracks can significantly improve the system reliability through a redundant detection mechanism: when a track is stuck due to the trigger body or the detection module fails, the remaining tracks can still work normally, thereby reducing the overall false negative rate of the system. For example, in the scene of preventing babies from choking on milk, three U-shaped tracks are arranged in parallel, and rubber trigger bodies with diameters of 4mm, 4.5mm and 5mm are respectively arranged. When the baby lies flat, at least one trigger body slides into the bottom to block the light path and trigger the alarm, and a single body shaking can only cause a temporary false trigger of a single trigger body, which is automatically filtered by the delay module. Based on this design, those skilled in the art can make equivalent extensions, for example, combining different shaped tracks (V-shaped + U-shaped + arc-shaped) to adapt to mixed monitoring needs, or configuring different movement trajectory constraint structures 2 (conductive contact body scheme + photoelectric sensor scheme) for each independent track, and the modular quick release structure can also be used to quickly replace a single track after damage. Such improvements not only improve the applicability of the home scene, but also are based on the core technical idea of parallel detection of multiple tracks.

[0047] Preferably, the movement trajectory constraint structure 2 comprises at least one independent track for detecting the front and back directions and at least one independent track for detecting the left and right directions, each track is configured with an independent trigger body 3 and a state detection module 4, and the alarm is triggered when all trigger bodies 3 reach the preset position at the bottom.

[0048] Specifically, such as Figure 5 As shown, in one embodiment of this utility model, the motion trajectory constraint structure 2 includes two vertical independent tracks, which detect the posture in the front-back and left-right directions respectively. When the human body being tested is in a completely flat lying position, the housing 1 remains horizontal. When the balls of both tracks slide into the preset positions at the bottom of the tracks, the alarm circuit 5 receives two trigger signals. After determining that the continuous triggering time of the two signals exceeds a preset threshold, it triggers a buzzer alarm. When either signal is interrupted, the alarm circuit 5 immediately terminates the alarm. It can be understood that by using a dual-track spatial orthogonal layout to force the detection of lying compliance in both the front-back and left-right dimensions, the false alarm rate can be effectively reduced. Those skilled in the art can make equivalent improvements based on the above design, such as using a set of parallel tracks to detect the front-back direction and another set of parallel tracks to detect the left-right direction, further increasing fault tolerance and reducing the false alarm rate, and using different motion trajectory constraint structures 2 in combination, etc.

[0049] Preferably, in some specific embodiments, the trigger body 3 is a sphere or a cylinder.

[0050] Understandably, a sphere can quickly respond to changes in gravity in any tilt direction, and its small contact area reduces resistance fluctuations, making it well-suited for V-shaped tracks, especially for scenarios requiring rapid alarms such as preventing suffocation from intoxication. A cylinder, on the other hand, enhances contact stability with its axial sliding characteristics, adapts to narrow track detection through its aspect ratio, and maintains a low false alarm rate even under vibration interference, making it suitable for long-term monitoring needs such as preventing supine hypotension in pregnant women. Both achieve supine posture judgment with a minimalist mechanical structure, offering low cost, long service life, and ease of use in home settings, making them the preferred solution for home health monitoring. Those skilled in the art can make equivalent improvements based on the above core design, such as replacing the sphere with an ellipsoid to optimize response sensitivity at specific angles, adding anti-slip textures to the surface of the cylinder to enhance track adaptability, or optimizing rolling / sliding characteristics by changing the trigger material while maintaining contact detection stability. Such improvements do not depart from the essential technical concept of this utility model.

[0051] Preferably, in some specific embodiments, the track for the movement of the trigger body 3 by the motion trajectory constraint structure 2 is a V-shaped track, a U-shaped track, or an arc track.

[0052] It can be understood that the V-shaped track, through the geometric constraint of the angle between the two side walls, forces the trigger body 3 to slide into the bottom detection area only when it is completely flat (e.g. when the angle is 150°, the inclination is greater than or equal to 15°, i.e. disengagement), combined with the matching design of the width of the bottom narrow area and the size of the trigger body, the flat posture detection error can be well reduced; the U-shaped track reduces the rolling resistance of the trigger body with the bottom wide and gentle curve, and through the matching of the bottom width and the axial length of the trigger body, the contact stability is enhanced, which can adapt to the long-time monitoring needs of baby cribs and other easily vibrating scenes; the arc-shaped track prolongs the moving stroke of the trigger body through the continuous curvature path, accelerates the trigger body to disengage from the detection area by using the centrifugal force, and the response speed is improved by 30% (compared with the straight line track), while reducing friction loss and prolonging service life. The three track structures can be low-cost injection molded to adapt to different home scenes, and users can realize one machine for multiple uses by replacing the track modules. Based on the above design, those skilled in the art can make equivalent improvements, for example, adjusting the V-shaped track to an asymmetric angle to adapt to special body types (e.g. single-sided inclination detection for hemiplegic patients), or adding an anti-backflow ratchet structure in the arc-shaped track to prevent accidental resetting of the trigger body, or combining multiple track segments (e.g. V-shaped + arc-shaped) to realize a graded alarm function. Such improvements do not deviate from the core technical idea of the present application, which is to achieve reliable triggering through track geometric constraints.

[0053] Preferably, in some embodiments, the alarm circuit 5 includes a signal processing unit 51 and an alarm unit 52; after the signal processing unit 51 receives the trigger signal, if the high level lasts for more than a predetermined time, the alarm unit 52 is triggered to alarm, and if the trigger signal is interrupted, the alarm unit 52 immediately stops alarming.

[0054] Preferably, in some embodiments, the signal processing unit 51 is an FT62E21x chip.

[0055] Preferably, in some embodiments, the alarm unit 52 is a buzzer.

[0056] Preferably, in some embodiments, the alarm circuit 5 is powered by a button cell 53.

[0057] It can be understood that the signal processing unit 51 selects the FT62E21x chip, which can operate at low power consumption, and filters short-time interference through a delay threshold after receiving a trigger signal, and only drives the buzzer alarm when the signal lasts more than a preset time (such as drunk monitoring for 5 minutes, baby anti-choking milk for 30 seconds), and the alarm is terminated immediately after the signal is interrupted, which takes into account false alarm prevention and real-time response; the alarm unit 52 selects a buzzer, which can adapt to complex home environments through high-penetration sound pressure and super-long life, and the button cell 53 can ensure that the device is light, thin, portable and has a long battery life of several years, and users do not need to maintain frequently. Those skilled in the art can extend and optimize based on this architecture, for example, replace the signal processing unit with a low-power chip integrated with wireless communication function to realize mobile phone linkage alarm, or add multiple tone modes to the buzzer to distinguish different emergency levels, or upgrade to an energy self-sustaining power supply system (such as solar power + button cell dual mode), which further expands the scene adaptability and intelligent level of home health monitoring while retaining the core technology of mechanical triggering and delay control.

[0058] The utility model provides a kind of mechanical trigger type bed posture alarm, and the accurate detection of bed posture is realized by pure mechanical structure design, and conductive contact part or photoelectric sensor is used as state detection module, cooperate the gravity-driven displacement of the scrollable spherical ball or cylindrical trigger body in V-shaped, U-shaped or arc track, Ensure that only in lying posture triggers alarm, effectively distinguish lateral recumbency, prone and other non-laying state;Through multi-track parallel design to improve detection redundancy, avoid false negative caused by single point failure;Combined with the delay control function (such as FT62E21x chip) of signal processing unit, short-time false trigger signal is filtered out, and long endurance is realized by low-power buzzer and button cell power supply, while ensuring zero privacy risk (no camera, wireless transmission), with low cost, high reliability and immediate use Family adaptability solves the problem of high false alarm rate of traditional electronic sensor, short service life of mechanical device and privacy leakage, meets the core needs of safety monitoring in drunk anti-suffocation, baby anti-choking milk and other home scenes.

[0059] The above only describes the preferred embodiments of the utility model, and does not limit the patent range of the utility model, and any equivalent structural transformation based on the inventive concept of the utility model, or direct / indirect application in other related technical fields is included in the patent protection range of the utility model.

Claims

1. A mechanically triggered bed posture alarm, characterized in that, The device comprises a shell (1), a motion trajectory constraint structure (2), a trigger body (3), a state detection module (4) and an alarm circuit (5). The motion trajectory constraint structure (2) is arranged in the shell (1) and has a track (21) for the movement of the trigger body (3). The trigger body (3) is movably arranged on the motion trajectory constraint structure (2) and is controlled to move by the gravity generated by the posture change of the shell (1). The state detection module (4) is arranged at the bottom area of the motion trajectory constraint structure (2) and is used for detecting whether the trigger body (3) reaches the bottom preset position and generating a trigger signal. The alarm circuit (5) is electrically connected with the state detection module (4) and starts alarm after receiving the trigger signal.

2. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The state detection module (4) comprises two spaced conductive contact parts (41), and the trigger body (3) is made of conductive material; when the trigger body (3) reaches the bottom preset position of the motion trajectory constraint structure (2), the two conductive contact parts (41) are contacted and the circuit is conducted, a trigger signal is generated and transmitted to the alarm circuit (5).

3. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The state detection module (4) comprises at least one pair of photoelectric sensors (42), the photoelectric sensor (42) is composed of an emitting end (421) and a receiving end (422) and is oppositely arranged at the two sides of the bottom of the motion trajectory constraint structure (2); when the trigger body (3) reaches the bottom preset position of the motion trajectory constraint structure (2), the light path from the emitting end (421) to the receiving end (422) is blocked, a trigger signal is generated and transmitted to the alarm circuit (5).

4. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The state detection module (4) comprises an electrical parameter sensor (43), the electrical parameter sensor (43) is a capacitive sensor or an inductive sensor; when the trigger body (3) reaches the bottom preset position of the motion trajectory constraint structure (2), the electrical parameter sensor (43) is caused to change the electrical parameter, a trigger signal is generated and transmitted to the alarm circuit (5).

5. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The state detection module (4) comprises a pressure sensor (44); when the trigger body (3) reaches the bottom preset position of the motion trajectory constraint structure (2), the pressure sensor (44) is pressed under the action of gravity, a trigger signal is generated and transmitted to the alarm circuit (5).

6. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The motion trajectory constraint structure (2) comprises a plurality of independent tracks arranged in parallel, each track is configured with an independent trigger body (3) and a state detection module (4), and alarm is triggered when any trigger body (3) reaches the bottom preset position.

7. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The motion trajectory constraint structure (2) comprises at least one independent track for detecting the front-back direction and at least one independent track for detecting the left-right direction, each track is configured with an independent trigger body (3) and a state detection module (4), and alarm is triggered when all the trigger bodies (3) reach the bottom preset position.

8. The mechanical trigger type in-bed posture alarm of claim 1, wherein The trigger body (3) is a spherical body or a cylindrical body.

9. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The track of the motion trajectory constraint structure (2) for the movement of the trigger body (3) is a V-shaped track, a U-shaped track or an arc-shaped track.

10. The mechanical trigger type in-bed posture alarm according to claim 1, wherein The alarm circuit (5) comprises a signal processing unit (51) and an alarm unit (52); after receiving the trigger signal, if the high level lasts more than a preset time, the signal processing unit (51) triggers the alarm unit (52) to alarm; if the trigger signal is interrupted, the alarm unit (52) stops alarming immediately.

Images