CN112977760B

CN112977760B - Environment self-adaptation intelligent life buoy based on piezoelectric effect

Info

Publication number: CN112977760B
Application number: CN202110251549.8A
Authority: CN
Inventors: 焦鹏程; 埃格贝·王詹姆斯; 李文焘
Original assignee: Zhejiang University ZJU
Current assignee: Zhejiang University ZJU
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2022-05-06
Anticipated expiration: 2041-03-08
Also published as: CN112977760A

Abstract

The invention discloses an environment self-adaptive intelligent life buoy based on a piezoelectric effect, which can be specifically divided into an upper unit and a lower unit; the upper unit is of constant volume and the lower unit can expand and contract. The upper unit comprises a plurality of piezoelectric nanogenerators and an air pump control system; the air pump control system comprises an air pump switch, an air pump and a capacitor; the air pump switch is connected with the air pump; the capacitor collects the electric energy generated by the piezoelectric nano generator and is used for the operation of the air pump; the air pump is connected with the lower unit and used for inflating the lower unit so that the lower unit is expanded and deformed; the resistance wire is heated by electric energy generated by the piezoelectric nano generator. The life buoy provided by the invention can deform to different degrees according to different environmental conditions and the body conditions of the drowning person, so that the use requirements of different people are met, and the life buoy also has the functions of monitoring the body conditions of the drowning person, wirelessly speaking and automatically heating.

Description

Environment self-adaptation intelligent life buoy based on piezoelectric effect

Technical Field

The invention belongs to the field of water emergency life saving, and particularly relates to an environment self-adaptive intelligent life buoy based on a piezoelectric effect.

Background

The life buoy is a main kind of water emergency life-saving equipment and is generally used as a necessary safety protection product in water disaster relief and related production and operation processes. Lifebuoys, which are generally made of cork, foam or other lightweight materials with a relatively low specific gravity, are widely used in the fields of shipping, marine operations, flood fighting, disaster relief, and leisure activities for water travel. The solid life buoy is usually carried by being hung on two sides of a ship body, so that the occupied area is large and the number is small. When an accident occurs and the life buoy is held on water for a long time to wait for rescue, a person falling into the water is usually in a state of a sharp and severe underwater environment, the body is cold, and the body condition of the person is difficult to guarantee. Conventional lifebuoys are often not practical. At present, solid life buoys in the market are certain in size, and inconvenience is brought to people of different body types. Therefore, it is an urgent need to design an environment adaptive intelligent life buoy that can meet the use of people with different body types.

The development of piezoelectric materials and nanogenerators provides technical support for the present invention. A piezoelectric material is a material that generates a voltage when mechanically deformed by an external force, and conversely, when a voltage is applied across it, it is also deformed, which phenomenon is called a piezoelectric effect. The piezoelectric principle has found application in the development of practical sensors and actuators around the world and can be tuned to the output voltage to correlate the voltage to a particular deformation. The piezoelectric nano generator is a micro generator which converts bending and compression mechanical energy into electric energy by utilizing the piezoelectric property and the semiconductor property of a zinc oxide nano material, and has wide and important application in biomedicine, military, wireless communication and wireless sensing.

In the invention, in consideration of the problems that the traditional life buoy cannot be deformed and is inconvenient to use, an environment self-adaptive intelligent life buoy based on a piezoelectric effect is provided, and the environment self-adaptive intelligent life buoy can be used for emergency water rescue. The invention solves the problem that the life buoy can deform to different degrees according to different environmental conditions and the physical conditions of people falling into the water, thereby meeting the use requirements of different people, and can support the people falling into the water without causing accidental risks to the people falling into the water. The invention is characterized in that the equipment is environment-adaptive and self-powered, the equipment generates electricity by flapping a 'generator set' consisting of a plurality of piezoelectric nano generators through sea waves and stores the generated electricity in a capacitor, and after a person falling into the water presses a button on an air pump, the air pump starts to work to expand the lower part of the life buoy and lift the person falling into the water. In addition, the electric energy generated by the generator set can be used for the work of an internal sensor of the life buoy and a small interphone, the internal sensor can monitor the physical condition of a person falling into the water, the small interphone can enable the person falling into the water to call for help in time, the resistance wire can heat the life buoy, the person falling into the water cannot cause cold body due to low water temperature, and the small interphone is provided with a temperature protection device.

Disclosure of Invention

The invention provides an environment self-adaptive intelligent life buoy based on a piezoelectric effect, aiming at the problems that the life buoy is not deformable and is inconvenient to use.

The purpose of the invention is realized by the following technical scheme: an environment self-adaptive intelligent life buoy based on piezoelectric effect is specifically divided into an upper unit and a lower unit; the upper unit is of constant volume and the lower unit can expand and contract.

The upper unit comprises a plurality of piezoelectric nanogenerators and an air pump control system; the air pump control system comprises an air pump switch, an air pump and a capacitor; the air pump switch is connected with the air pump; the capacitor collects the electric energy generated by the piezoelectric nano generator and is used for the operation of the air pump; the air pump is connected with the lower unit and used for inflating the lower unit, so that the lower unit is expanded and deformed.

Furthermore, the piezoelectric nano generators contain zinc oxide nano materials, and the flapping impact of sea waves causes the piezoelectric nano generators to bend or deform in a compression mode, so that mechanical energy is converted into electric energy for continuous and stable power generation.

Further, the upper unit comprises a semiconductor biosensor for monitoring the physical conditions of the drowning person, such as heart rate, blood pressure, body surface temperature, and the like.

Further, when the lower unit is subjected to expansion deformation, the ring body contracts downwards, the width of the lower part is narrowed, and a person falling into the water is lifted.

Further, the upper unit and the lower unit, which is not deformed, are clamped by the float clip, and when the lower unit is expanded, the float clip is sprung open and the lower unit is expanded downward.

Further, an electric energy transmission device is arranged on the upper unit, and the piezoelectric nano-generators are orderly arranged on the electric energy transmission device.

Furthermore, the lower unit contains a wireless interphone, the wireless interphone is powered by a capacitor, the wireless interphone automatically starts to work after the lower unit expands, and emergency call can be carried out.

Further, the lower unit contains a resistance wire inside, which is heated by the electric energy generated by the piezoelectric nano generator, and is provided with a temperature protection device.

The invention has the beneficial effects that: the invention can be used for emergency water rescue. The invention solves the problem that the life buoy can deform so as to meet the use requirements of people with different body types, and can support a person falling into water so as not to cause the person falling into water to have an unexpected danger. In addition, the sensor for monitoring the physical condition of the person falling into the water and the small-sized wireless interphone which are attached to the life ring enable the person falling into the water to be well communicated with rescuers, and great convenience is provided for rescue. In the process of waiting for rescue, the resistance wire in the life buoy can heat the life buoy, so that a person falling into the water can be prevented from feeling cold due to low water temperature.

Drawings

Fig. 1 is a schematic structural diagram of the working principle of an intelligent life buoy;

fig. 2 is a schematic view of the intelligent lifebuoy after inflation;

fig. 3 is a schematic view of an upper structure of an intelligent life buoy;

fig. 4 is a schematic view of the intelligent lifebuoy substructure;

FIG. 5 is a schematic view of the intelligent lifebuoy substructure after inflation;

in the figure: 1. an upper unit; 2. a lower unit; 3. a piezoelectric nanogenerator; 4. a buoy holder; 5. an air pump control system; 501. an air pump switch; 502. an air pump; 503. a capacitor; 6. a circuit transfer device; 7. a wireless interphone; 8. a semiconductor biosensor; 9. resistance wire.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

The invention provides an environment self-adaptive intelligent life buoy based on a piezoelectric effect, which is shown in figure 1 and is a structural schematic diagram of the working principle of the intelligent life buoy. It is specifically divided into an upper unit 1 and a lower unit 2. The upper unit cannot deform and expand, while the lower unit can deform and expand, and in a compressed state, the upper and lower units are clamped by the float clamp.

As shown in FIG. 3, the upper unit comprises a piezoelectric nano-generator set, an air pump, a capacitor, and a semiconductor biosensor 8 capable of detecting body conditions such as heart rate, blood pressure, body surface temperature, etc. of a person falling into water. When the life buoy falls into water, the life buoy starts to work, the capacitor is fully filled with electric energy to be supplied to the air pump, and the sensor can monitor the physical condition of the person falling into water in real time.

The upper unit 1 comprises a power generating set consisting of a plurality of piezoelectric nano generators 3, the piezoelectric nano generators 3 contain zinc oxide nano materials, and the flapping impact of sea waves causes the piezoelectric nano generators to bend or deform in a compression mode, so that mechanical energy is converted into electric energy for continuous and stable power generation.

The upper unit 1 contains an air pump control system 5 including an air pump switch 501, an air pump 502, and a capacitor 503.

The capacitor 503 can collect the electrical energy generated by the piezoelectric nanogenerator 3 and be used for the operation 502 of the air pump.

The upper unit 1 is of constant volume and the lower unit 2 can expand and contract.

When the air pump switch 501 is pressed to start the operation of the air pump 502, air enters the lower unit 2, and the lower unit 2 is expanded and deformed.

As shown in fig. 4, the lower structure is in a compressed state during non-operation and is secured to the upper structure by a float clip.

When the lower unit 2 is subjected to expansion deformation, the ring body contracts downward, the width of the lower portion is narrowed, and the person falling into the water is lifted up.

As shown in fig. 2. The float clip 4 clips the upper unit 1 and the lower unit 2 which is not deformed, when the air pump switch button is pressed, the air pump starts to operate, and when the lower unit 2 expands, the float clip 4 springs open, and the lower unit expands downward.

The piezoelectric nano-generator 3 is orderly arranged on the electric energy transmission device 6.

The lower unit 2 includes a wireless intercom 7, which is energized by a capacitor 503, and automatically starts to operate after the lower unit 2 is expanded, thereby making it possible to make an emergency call. As shown in fig. 5, the lower unit is filled with air, so that the lower unit deforms and expands, the lower caliber contracts, and the small wireless intercom automatically starts to operate after the lower unit expands. The lower unit 2 contains a resistance wire 9, and after the lower unit 2 expands, the electric energy stored in the capacitor 503 by the piezoelectric nano generator 3 is used for supplying power and heating, and a temperature protection device is also arranged.

The environment self-adaptive intelligent life buoy is generated by the piezoelectric nano generator 3, so that self-energy supply is realized during normal operation, and power supply devices such as batteries are not needed.

The environment self-adaptive intelligent life buoy based on the piezoelectric effect can meet the use requirements of different people by deforming according to different environmental conditions and body conditions of drowning people to different degrees, supports the drowning people without causing unexpected risks, and has the functions of monitoring the body conditions of the drowning people and wirelessly talkbacking. The invention has the innovation that the device is environment-adaptive and self-powered, generates electricity through a 'generator set' consisting of a plurality of piezoelectric nano generators through sea waves and stores the generated electric energy in a capacitor, and after a person falling into water presses a button on an air pump, the air pump starts to work to expand the lower part of the life buoy and lift the person falling into water. The electric energy generated by the generator set can also be used for the work of an internal sensor of the life buoy and the wireless interphone, the internal sensor can monitor the physical condition of a person falling into the water, and the wireless interphone can enable the person falling into the water to call for help in time. The resistance wire in the life buoy can heat the life buoy by using the electric energy generated by the generator set, so that a person falling into the water does not feel cold due to low water temperature.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and these modifications or substitutions do not depart from the spirit of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. An environment self-adaptive intelligent life buoy based on piezoelectric effect is characterized in that the life buoy is specifically divided into an upper unit (1) and a lower unit (2); the upper unit (1) is of constant volume and the lower unit (2) is capable of expansion and contraction;

the upper unit (1) comprises a plurality of piezoelectric nanogenerators (3) and an air pump control system (5); the air pump control system (5) comprises an air pump switch (501), an air pump (502) and a capacitor (503); the air pump switch (501) is connected with an air pump (502); the capacitor (503) collects the electric energy generated by the piezoelectric nano generator (3) and is used for the operation of the air pump (502); the air pump (502) is connected with the lower unit (2) and used for inflating the lower unit (2) so that the lower unit (2) is expanded and deformed; the upper unit (1) and the lower unit (2) which is not deformed are clamped through the buoy clamp (4), when the lower unit (2) expands, the buoy clamp (4) pops open, and the lower unit expands downwards; when the lower unit (2) expands and deforms, the ring body contracts downwards, the width of the lower part of the ring body is narrowed, and a person falling into water is supported;

the piezoelectric nano generators (3) contain zinc oxide nano materials, and the flapping impact of sea waves causes the piezoelectric nano generators to bend or compress and deform, so that mechanical energy is converted into electric energy for continuous and stable power generation;

the lower unit (2) is internally provided with a resistance wire (9) which is heated by electric energy generated by the piezoelectric nano generator (3), and is also provided with a temperature protection device.

2. The piezo-electric effect based environment adaptive intelligent life buoy according to claim 1, characterized in that the upper unit (1) contains semiconductor biosensors (8) to monitor heart rate, blood pressure and body surface temperature of a person falling into water.

3. The piezoelectric effect based environment adaptive intelligent life buoy according to claim 1, characterized in that the upper unit (1) is provided with a power transmission device (6), and the piezoelectric nano-generator (3) is orderly arranged on the power transmission device (6).

4. The piezoelectric effect based environment adaptive intelligent life buoy according to claim 1, characterized in that the lower unit (2) contains a wireless interphone (7) which is powered by a capacitor (503) and automatically starts to work for emergency call after the lower unit (2) is expanded.