CN201352380Y - Human body falling-down detection and alarm device - Google Patents

Abstract

The utility model discloses a human fall detection and alarm device. The fall detection device and a box-shaped air bag are composed of the acceleration sensor, a communication module, a single-chip microcomputer, a DSP processor, a wireless positioning module, a gas generator and a safety air bag; The acceleration sensor, wireless communication module and wireless positioning module of the fall detection device are respectively electrically connected to the DSP processor, and the monitoring results of human body posture changes are input into the DSP processor, and through the analysis of the input signal, it is judged whether the user has fallen accident, and realize GPS positioning through the wireless positioning module; the wireless communication module of the box-shaped airbag part inputs the received signal into the single-chip microcomputer, and the single-chip microcomputer controls the gas generator to make the airbag open quickly. Due to the split structure, it is easy to carry and reduces the damage to the user's body caused by a fall accident; its wireless positioning module automatically sends information to the contact person; the design without buttons reduces the difficulty of use.

Description

Man fall detection alarm device

technical field

The utility model relates to a detection and alarm device, in particular to a human fall detection and alarm device.

Background technique

Refer to Figure 2. The document "Publication No. 201126620 Chinese Utility Model Patent" discloses an automatic alarm for people falling, which adopts an integrated design and consists of a three-axis acceleration sensor, a single-chip microcomputer, an audible and visual alarm, a communication module, a cancel alarm key, and an alarm key. . The input end of the single-chip microcomputer is respectively connected with the three-axis acceleration sensor, the cancel alarm key, and the alarm key. The sound and light alarm is connected with the output end of the single chip microcomputer, the communication module is connected with the bidirectional interface of the single chip microcomputer, and the connection between the alarm key and the sound and light alarm is canceled. The alarm detects the acceleration signal, inclination angle signal, and vibration signal when a person falls through the triaxial acceleration sensor, and sets a simple threshold. When the threshold is exceeded, the single-chip delay and the sound and light alarm circuit are activated. If the alarm key signal is not eliminated within one minute, a remote call for help is made through the communication module.

This utility model has the following disadvantages: the acceleration sensor is used to judge the posture of the human body, and the sound and light alarm is used to issue an alarm, which cannot reduce and prevent the actual physical injury caused by the fall accident to the user; its communication module is in the unconscious state of the user. , unable to effectively communicate with the receiver; its multiple button design makes the user's operation cumbersome.

Contents of the invention

In order to overcome the disadvantages of cumbersome operation and inability to independently protect users in the prior art, the utility model provides a human fall detection and alarm device, which adopts a split design and consists of a fall detection device and a box-shaped airbag. Its box-shaped airbag is easy to carry, and can reduce the physical injury caused by the fall accident; the use of its wireless positioning module can automatically inform the emergency contact of the accident location without the user's awareness; its no button design , can reduce the difficulty of use; its step counting function and voice registration module can increase the fun of daily wearing by users, and encourage users to do more exercise, improve physical function, and achieve the purpose of preventing falls.

The technical scheme adopted by the utility model to solve its technical problems: a human fall detection and alarm device, including an acceleration sensor, a communication module and a single-chip microcomputer, which is characterized in that it also includes a DSP processor, a wireless positioning module, a gas generator and a safety airbag , the acceleration sensor, communication module, single-chip microcomputer, DSP processor, wireless positioning module, gas generator and safety airbag are composed of two parts: a fall detection device and a box-type air bag; the acceleration sensor, wireless communication module and wireless The positioning module is electrically connected with the DSP processor respectively, and the monitoring result of the human body posture change is input into the DSP processor. Through the analysis of the input signal, it is judged whether the user has a fall accident, and the GPS positioning is realized through the wireless positioning module; box type The wireless communication module of the airbag part inputs the received signal into the single-chip microcomputer, and the single-chip microcomputer controls the gas generator, and inputs the gas into the U-shaped safety airbag, so that the airbag opens quickly.

It also includes a voice reporting module connected with the DSP processor.

Also included is a display connected to the DSP processor.

The beneficial effects of the utility model are: due to the adoption of the split structure, the box-shaped airbag is not only easy to carry, but also reduces the physical injury caused by the accident of falling to the user; the wireless positioning module is adopted, and in the unconscious state of the user, Automatically inform the emergency contact of the location of the accident; the design without buttons reduces the difficulty of use; the step counting function, voice reporting module and display increase the fun of the user's daily wear, providing the user with a collection of detection, A human fall detection and alarm device integrating alarm, protection and prevention.

Below in conjunction with accompanying drawing and embodiment the utility model is described in detail.

Description of drawings

Fig. 1 is the circuit block diagram of the people fall detection and alarm device of the present invention.

Fig. 2 is a circuit block diagram of an automatic alarm for people falling in the background art.

Detailed ways

With reference to Fig. 1, the utility model people fall detection alarm device is made up of two parts of fall detection device and box type air bag. The fall detection device part includes a DSP processor, an acceleration sensor, a voice reporting module, a display, a wireless communication module and a wireless positioning module. The acceleration sensor, the voice reporting module, the display, the wireless communication module and the wireless positioning module are respectively electrically connected with the DSP processor. Input the monitoring result of human posture change into DSP, and judge whether the user has a fall accident by analyzing the input signal. The box-type airbag part includes a single-chip microcomputer, a wireless communication module, a gas generator and a safety airbag. The wireless communication module inputs the received signal into the single-chip microcomputer, and the single-chip microcomputer controls the gas generator, and inputs the gas into the U-shaped safety airbag, so that the airbag opens quickly.

In this embodiment, the acceleration sensor at the end of the fall detection device adopts the three-axis acceleration sensor LC0707 of Lance Company, and the monitoring result of the human body posture change is input into the DSP. The digital signal processor DSP adopts TI's TMS320VC5402. With the characteristics of high integration, fast processing speed, stable performance and strong scalability of this type of DSP, the following functions can be realized: (1) and activate the airbag accordingly; (2) The acceleration sensor detects slight changes in human body posture to realize the step counting function. At the same time, the voice reader and display issue prompts to encourage users to continue physical activities. The wireless communication module connected to the DSP adopts the BCM-05 chip with Bluecore02 as the core. This Bluetooth chip is small in size, low in power consumption, and meets the Bluetooth 1.1 specification. It is used to complete the data transmission between the fall detection device and the box-type airbag. The fall detection device is worn in front of the user's waist, and the box-shaped airbag is worn behind the user's waist. The Bluetooth transmission reduces the trouble caused by the line connection and is more convenient to use. The wireless positioning module adopts Infineon's BGM681L11 platform to realize GPS positioning, inform the emergency contact of the location of the accident, and let the user get further assistance.

The box-type airbag uses HCS12 series single-chip microcomputer to realize the control of the gas generator. After receiving the input signal from the wireless communication module, the gas generator works immediately, and the gas is input into the U-shaped airbag to make the airbag open quickly.

Its working process is as follows: After the user wears the split-type human fall detection and alarm device and turns it on, each unit is initialized and enters the working state. In the daily life of the user, the system first implements the step counting function, which can be used for voice registration and display display of the user's steps, and encourages the user through the voice registration to increase the user's interest in wearing it. After the user has a fall accident, the acceleration sensor will input the collected signal into the DSP according to the drastic change of the human body posture. The airbag protects the human body. At the same time, the DSP sends the pre-input security contact information through the wireless positioning module BGM681L11 to notify the emergency contact in time.

In order to ensure the reliability of the split-type human fall detection system, screen the input signal of the acceleration sensor, correctly judge the real state of the human body, and avoid the false activation of the protection device under normal conditions, or the failure of the activation under emergency conditions. The signal passes through a high-pass filter with a cutoff frequency of 0.5Hz, and the filtered data stream is cut into multiple data segments with a unit of one second, and then the standard deviation and median value in each data window are calculated, and the final evaluation value adopts Averaged over ten seconds. Use this estimate to compare with a preset threshold, which is an a priori value obtained through trial and error.

The USB interface provided by the DSP can be connected to the PC, and the information of the emergency contact can be input or modified by using the special software installed in the PC.

Claims (3)

1, a kind of detection alarm device for human falling, comprise acceleration transducer, communication module and single-chip microcomputer, it is characterized in that: also comprise dsp processor, wireless locating module, gas generator and air bag, described acceleration transducer, communication module, single-chip microcomputer, dsp processor, wireless locating module, gas generator and air bag are formed fall detection device and two parts of box type air bag; Acceleration transducer, wireless communication module and the wireless locating module of fall detection device part are electrically connected with dsp processor respectively, the monitoring result of human body attitude change is input in the dsp processor, by analysis to input signal, judge user's accident of whether falling, and realize the GPS location by wireless locating module; The wireless communication module of box type air bag part is with the signal input single-chip microcomputer that receives, and single-chip microcomputer is controlled gas generator, and gas is imported in the U type air bag, and air bag is opened rapidly.

2, detection alarm device for human falling according to claim 1 is characterized in that: also comprise a voice reporting read through model that is connected with dsp processor.

3, detection alarm device for human falling according to claim 1 is characterized in that: also comprise a display that is connected with dsp processor.

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