KR20240043321A - Rescue call system with user self-powered device - Google Patents

Abstract

The present invention relates to a rescue request system having a user self-generation device, which solves the difficulty of charging a portable device such as a smartphone only with sunlight by including a solar cell connected to a storage battery and a self-generation device, enables effective structure, monitoring, and remote broadcasting with a rescue request and monitoring means having a motion detection speaker, turns on when a clock is defective or weather worsens to easily find a rescue team, and collects local weather information.

Description

Rescue request system with user self-generating device {RESCUE CALL SYSTEM WITH USER SELF-POWERED DEVICE}

The present invention relates to a rescue request system that can make emergency contact in safety-vulnerable areas such as mountains, and more specifically, to a rescue request system equipped with a user's own power generation device.

When experiencing difficulties such as distress in high-crime areas as well as in safety-vulnerable areas such as mountains, situations arise in which emergency contact must be made. Nowadays, each person carries a smartphone so that they can make emergency contact when they encounter the above difficulties. However, when a situation occurs where one is isolated for a long period of time due to a disaster in a safety-vulnerable area such as a high-crime area or mountainous area, the smartphone battery runs out and the smartphone can be used to make emergency calls. There may be situations where contact is no longer possible. In this case, a means to notify the outside of the emergency situation and request rescue is needed.

In order to solve the above problems, Korean Patent No. 10-1895213 discloses a solar-powered wireless emergency call device and its operating method, but it is difficult to obtain the desired results with solar power alone. Currently, there are places in the mountains and other places that have facilities for charging smartphones using solar energy, but the charging efficiency is low so they are not actually used.

Accordingly, the present invention solves the problems of the prior art and seeks to provide a rescue request system equipped with a user's own power generation device that is capable of requesting rescue in safety-vulnerable areas, as well as monitor monitoring and control, remote broadcasting, and collecting local weather information.

In order to achieve the above object, the rescue request system according to the present invention includes a support having a predetermined space therein; A storage battery provided on the support; A solar cell and a self-generating device provided on the support and connected to the storage battery; a control device provided on the support and connected to the storage battery; and a communication device provided on the support and connected to the control device.

The control device may further be connected to a rescue request and monitoring means provided on the support, and the rescue request and monitoring means may include a rescue call button, a motion detection speaker, and a camera.

The self-generating device may be a handle rotation generator provided on the support pole or a staircase piezoelectric generator provided next to the support pole.

The self-generating device includes the staircase piezoelectric generator, and the staircase piezoelectric generator includes: a staircase provided next to the strut; A plurality of stepping members of the stairs; a piezoelectric material layer polarized in a direction perpendicular to the stepping member between upper and lower conductive coating layers placed on each upper part of the plurality of stepping members; and a pressure distribution layer placed on top of the piezoelectric material layer.

The control device may be further connected to a rescue team location recognition device and a local weather collection device provided on the top of the support.

A smartphone power supply means may be further connected to the storage battery, and the support may be further provided with a smartphone mounting stand.

The present invention solves the difficulty of charging portable devices such as smartphones using only sunlight by providing a solar cell and a self-generating device connected to a storage battery, and provides effective rescue and monitoring by means of a rescue request and surveillance device equipped with a motion detection speaker. Remote broadcasting is possible, and it turns on in case of poor visibility or bad weather, making it easier to find rescue teams and collecting local weather information.

Figure 1 is a conceptual diagram showing the configuration of a rescue request system according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the attached drawings.

A rescue request system according to an embodiment of the present invention includes, as shown in FIG. 1, a support 10 having a predetermined space therein; A storage battery (20) provided on the support; A solar cell (22) and a self-generating device (23, 24; 90) provided on the support and connected to the storage battery; A control device 30 provided on the support and connected to the storage battery; and a communication device 40 provided on the support and connected to the control device.

Here, the self-generating device (23, 24; 90) refers to any device that allows the rescuer to directly generate electricity and charge the storage battery (20) with electricity. As one embodiment, Figure 1 illustrates the handle rotation generators 23 and 24 provided on the support pole 10 or the step piezoelectric generator 90 provided next to the support pole 10, but is not limited thereto.

The handle rotation generators 23 and 24 are generators based on electromagnetic induction and may include a handle 23 that rotates a magnet bundle or coil and a device 24 that generates electricity by rotation of the handle 23. there is.

The staircase piezoelectric generator 90 refers to a device that includes a piezoelectric material on the treading member of a staircase and generates power by applying pressure from people going up and down the stairs, including rescue seekers.

Piezoelectric materials are functional materials that generate electricity through pressure. As can be seen from the term piezoelectricity (Piezo means “to press” and Electricity means “electricity”), when pressure is applied to the material to deform it, the polarization is distorted and electricity is generated. It generates electricity by displaying positive polarity, or conversely, deformation occurs when electricity is applied. Piezoelectric materials are classified into two types: 33 directions in which the polarization direction and the pressure direction are parallel, and 31 directions in which both are perpendicular to each other. General weight It is known that when a person steps on each piezoelectric element about 10 times, a voltage of about 8V is generated, and if all the power generated from each piezoelectric element is added together, hundreds of kW·s of power can be produced per day (http:/ /amenews.kr/news/view.php?idx=11501, 2012. 08. 23. See New Material Economy).

Piezoelectric materials are ferroelectric materials in which the polarization of the molecular structure is arranged in a certain direction and have electric dipole characteristics. Materials known so far include quartz, Rochelle salt, BaTiO ₃ , and Lead Zirconate Titanate (PZT). , Polyvinylidene Fluoride (PVDF), etc. The coupling coefficient (k) between the mechanical energy (M _E ) due to pressure and the generated electrical energy (E _E ) is defined as k ² =E _E /M _E , with PZT being the highest at 0.5 to 0.7, and BaTiO ₃ being the highest. It is known to be 0.15~0.2, and Quartz and PVDF are known to be 0.1 (see Polymer Science and Technology Vol 31, No 6, December 2020, pp. 484-489).

Meanwhile, it is well known that three times your body weight is placed on your knees when going up stairs, and about five times your body weight when coming down stairs. The load carried on the knees is transmitted directly to the stepping members of the stairs through the soles (shoes). In the above paper, since the k of PZT is 0.5 to 0.7, when using it as a piezoelectric material, the electrical energy (E _E ) generated by pressure is the mechanical energy (M _E ) by pressure, that is, the impact energy by the load transmitted to the shoe. It is 25-49% of the potential energy and kinetic energy of a person going up and down the stairs. In addition, considering the above new material economy and the load on stairs, it can be predicted that if a piezoelectric element made of the same material goes up and down the stairs about 10 times, a voltage much greater than 8V will be generated when walking on flat ground.

Therefore, by providing the above-described step piezoelectric generator 90 as the self-generating device, it is possible to solve the problem of charging portable devices such as smartphones using conventional solar energy alone.

Specific embodiments of the staircase piezoelectric generator 90 may vary, but as shown in FIG. 1, there are steps provided adjacent to the support 10; A plurality of stepping members 92 of the stairs; a piezoelectric material layer (96) polarized in a direction perpendicular to the stepping member (92) between the upper and lower conductive coating layers (94a, 94b) placed on each upper part of the plurality of stepping members; and a pressure distribution layer 98 placed on top of the piezoelectric material layer.

Here, it is preferable that the staircase is connected to the bottom surface of the support 10 or is provided in a neighborhood where wiring with an electric lead wire is possible even if it is separated by a certain distance. Depending on the embodiment, when the rescue request system of the present invention is installed in a mountainous area, the support 10 may use stairs installed to go up and down the mountainous area. Of course, if it is installed on a flat area such as a high-crime area, a separate staircase can be made of concrete, etc.

The plurality of stepping members 92 refer to the space for stepping on the stairs, and are made of steel, wood, concrete, or equivalent, such as stairs installed in mountainous areas, and have a hardness above a certain level (e.g., the pressure distribution layer described later). greater than hardness) is preferable. This is to maximize the generation of electricity by increasing the distortion of polarization by reflecting and transmitting the force caused by the load transmitted to the shoe almost as is to the bottom of the piezoelectric material layer 96.

The piezoelectric material layer 96 may be formed by forming perovskite-type materials such as BaTiO ₃ (BTO), PZT, or PMN-PT on a bulk or plastic substrate. Among these, PZT and PMN-PT, which have a large k value, are preferable, but since they contain lead, it is advisable to use them only on limited staircases in a sealed state. When installing on most mountain stairs, BTO, which does not contain lead, is preferred. desirable.

Depending on the embodiment, the piezoelectric material layer 96 may be vertically stacked in plural numbers on each stepping member 92.

The upper and lower conductive coating layers 94a and 94b are provided with a lower coating layer 94a and an upper coating layer 94b of each piezoelectric material layer 96, and electrode layers are formed at both upper and lower ends of the piezoelectric material polarized perpendicular to the stepping member 92. It plays a role.

The pressure distribution layer 98 is placed on the top of the piezoelectric material layer 96, that is, on the upper coating layer 94b, and absorbs the shock (pressure) transmitted from the shoes of the person requesting rescue or walking up and down the stairs, thereby absorbing the pressure of the piezoelectric material layer. (96) This is a widely distributed layer and can be made of flexible materials such as rubber.

Depending on the embodiment, an impact (pressure) transmission plate made of a material with greater hardness than the pressure distribution layer 98 may be further provided between the pressure distribution layer 98 and the upper coating layer 94b.

In another embodiment, in the step piezoelectric generator 90, it is preferable that the conductive wires connected to the upper and lower conductive coating layers 94a and 94b pass through a predetermined rectification circuit before being directly connected to the storage battery 20. When going up or down stairs, in addition to the case where a person's potential energy is applied perpendicularly to the piezoelectric material layer 96 (mainly when going down stairs), there are also cases where kinetic energy is applied diagonally (mainly when going up stairs). In the latter case, the polarity of the upper and lower covering layers 94a and 94b of the piezoelectric material layer 96 can be changed, so this can be effectively dealt with.

The storage battery 20 may be provided outside the strut 10, but is preferably provided in a predetermined space inside the strut 10, as shown in FIG. 1. In particular, a super capacitor that has a large capacity and can quickly charge a smartphone, etc., while being installed in a limited space, is desirable. Unlike ordinary batteries that use chemical reactions, supercapacitors rely on simple ion movement between the electrode and electrolyte interface or surface chemical reactions, enabling rapid charging, high charge/discharge efficiency, and semi-permanent cycle life characteristics. Supercapacitors include electric double layer capacitors (EDLC) that increase capacitance using electrodes and the electric double layer phenomenon, pseudo capacitors that use the electrochemical reaction of metal oxides or conductive polymers, and hybrid capacitors that have properties intermediate between the two. It is known (see https://m.blog.naver.com/kh015315/220063120024), and one of these can be used in this embodiment as well.

The control device 30, like a microcomputer equipped with a storage means, is provided inside or outside the support 10 and operates by being connected to the storage battery 20. Depending on the embodiment, the control device 30 includes: As shown in 1, the rescue request and monitoring means 50 provided on the support 10 may be further connected.

The rescue request and monitoring means 50 allows a person in distress, etc. to request rescue from the entity that installs or manages the rescue request system of the present invention (hereinafter referred to as 'management agency'), or conversely, the management agency requests rescue of the present invention. It refers to a means provided to monitor the surroundings where the system is installed.

In one embodiment, the rescue request and monitoring means 50 may be configured to include a rescue call button 52, a motion detection speaker 54, and a camera 56, as shown in FIG. 1.

The rescue call button 52 is equipped to send a distress signal to the management agency through wired or wireless communication through the control device 30 and the communication device 40 when pressed.

The motion detection speaker 54 is equipped with a sensor capable of detecting the human body, such as an infrared detection sensor, through which it detects the approach of a person in distress, etc., and provides a guidance voice (local location, etc.) previously stored in the storage means of the control device 30. It is equipped to transmit. Of course, when the approach of a person in distress, etc. is detected by the motion detection speaker 54 according to a predetermined program stored in the storage means, a predetermined signal can be sent to the management agency and a call can be made without pressing the rescue call button 52. It can be provided.

The camera 56 is equipped to enable a person in distress to make a video call with the person in charge of the management agency, and when the management agency receives a predetermined signal through the rescue call button 52 or the motion detection speaker 54, the support 10 Monitoring control while looking at the surroundings can also be provided.

The control device 30 may be further connected to a rescue team location recognition device 60 and a local weather collection device 70 provided at the top of the strut 10, as shown in FIG. 1 .

Here, the rescue team location recognition device 60 is equipped with a flashing light and/or a beat sound transmitter, and lights up and/or generates a location sound when visibility is poor or the weather is bad, as determined by the control device 30, so that victims, etc. The invention's rescue request system makes it easy to reach the rescue team where it is installed. The control device 30 can determine whether the visibility is defective from all or some cells of the solar cell (when generating power below a set voltage or current) and whether the weather has worsened through the local weather collection device 70, which will be described later. Of course, the rescue team location recognition device 60 may be operated using a control signal sent from the management agency.

As shown in FIG. 1, the local weather collection device 70 is equipped with a wind vane 72, an anemometer 74, and/or a digital thermometer 76 to regularly monitor local weather conditions according to a predetermined program stored in the storage means. You can send it to the management agency.

The communication device 40 is equipped to enable not only wired communication with the management agency, but also wireless communication through an antenna, as shown in FIG. 1. The wireless communication method may be through an existing LTE modem, but in places where communication using the LTE modem is not possible, RF bridge or UHF communication may be used. Of course, satellite communications such as Starlink can also be used.

The storage battery 20 is further connected to a smartphone power supply means, that is, a power cable connection port 80 and/or a power cable (OTG cable, etc.) as shown in FIG. 1, and the support 10 is provided with a smartphone mounting base ( 82) may be further provided.

Although it has been described above with reference to the attached drawings, it is not limited thereto and can be applied and implemented in various ways with reference to the above description.

10: support 20: storage battery
22: solar cell 23: handle
24: Electromagnetic induction electricity generation device 30: Control device
40: Communication device 50: Rescue request and monitoring means
52: Rescue call button 54: Motion detection speaker
56: Camera 60: Rescue team location recognition device
70: Local weather collection device 80: Power cable connection port
82: Smartphone mounting base 90: Stair piezoelectric generator

Claims (7)

A support having a predetermined space inside;
A storage battery provided on the support;
A solar cell and a self-generating device provided on the support and connected to the storage battery;
a control device provided on the support and connected to the storage battery; and
A rescue request system comprising a communication device provided on the support and connected to the control device.
According to claim 1,
A rescue request system, characterized in that the control device is further connected to rescue request and monitoring means provided on the support.
According to claim 2,
A rescue request system, wherein the rescue request and monitoring means include a rescue call button, a motion detection speaker, and a camera.
The method according to any one of claims 1 to 3,
The rescue request system is characterized in that the self-generating device is a handle rotation generator provided on the support or a staircase piezoelectric generator provided in the neighbor of the support.
According to claim 4,
The self-generating device includes the step piezoelectric generator,
The staircase piezoelectric generator includes a staircase provided next to the support;
A plurality of stepping members of the stairs;
a piezoelectric material layer polarized in a direction perpendicular to the stepping member between upper and lower conductive coating layers placed on each upper part of the plurality of stepping members; and
A rescue request system comprising a pressure distribution layer placed on top of the piezoelectric material layer.
According to claim 4,
A rescue request system, characterized in that the control device is further connected to a rescue team location recognition device provided at the top of the support and a local weather collection device.
According to claim 4,
A smartphone power supply means is further connected to the storage battery,
A rescue request system, characterized in that the support is further provided with a smartphone mounting base.