CN215498928U - Wireless transmitting device powered by piezoelectric impact generator - Google Patents

Abstract

The utility model belongs to the technical field of electronic energy, and particularly relates to a piezoelectric impact generator powered wireless transmitting device which comprises a switch part, wherein the switch part comprises a shell, a base and a key switch panel; the base is arranged at the bottom of the wireless transmitting device; the shell is covered above the base and is connected with two ends of the base; the key switch panel is arranged at the top of the shell; the piezoelectric igniter is arranged in the shell, one end of the piezoelectric igniter penetrates through the top of the shell to be in contact with the key switch panel, and the other end of the piezoelectric igniter is connected with the base; the management circuit is arranged in the base; the wireless transmitting module is arranged in the base and is connected with the management circuit. According to the utility model, the energy impacted when the switch is pressed is collected and converted into electric energy, so that the self-power generation of the key switch is realized, and the effect of saving energy is greatly achieved; the low-cost piezoelectric power generation ceramic is adopted, and the cost of the wireless transmitting device is greatly reduced.

Description

Wireless transmitting device powered by piezoelectric impact generator

Technical Field

The utility model belongs to the technical field of electronic energy, and particularly relates to a piezoelectric impact generator powered wireless transmitting device.

Background

At present, the development of network technology and communication technology is faster and faster, and the intelligent home industry is rapidly developed along with the application of scientific technology in life. At present, many researchers use energy collection technology for low-power-consumption equipment such as remote controllers, switches and doorbells, and sustainable power supply guarantee is provided for sensor nodes by using switches capable of pressing power generation, so that battery-free self-power-generation work is achieved. The common press power generation switch is electromagnetic, power generation is realized by exchanging the magnetic poles of the internal self-generating module, and certain difficulty is brought to processing and assembling due to the complex electromagnetic structure. The conventional piezoelectric self-generating structure only adopts one piezoelectric plate to collect an impact signal, and although the structure is simple, the piezoelectric plate is high in price, so that the application of the piezoelectric plate is limited.

SUMMERY OF THE UTILITY MODEL

The utility model provides a piezoelectric impact generator power supply wireless transmitting device, which adopts a piezoelectric stack structure, converts heavy hammer impact energy generated during pressing into electric energy, has the advantages of simple structure and low cost, and supplies power to the wireless transmitting device.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a piezoelectric impulse generator powered wireless transmitting device, comprising:

the switch part comprises a shell, a base and a key switch panel;

the base is arranged at the bottom of the wireless transmitting device;

the shell is covered above the base and is connected with two ends of the base;

the key switch panel is arranged at the top of the shell;

the piezoelectric igniter is arranged in the shell, one end of the piezoelectric igniter penetrates through the top of the shell to be in contact with the key switch panel, and the other end of the piezoelectric igniter is connected with the base;

the management circuit is arranged inside the base;

the wireless transmitting module is arranged inside the base and is connected with the management circuit.

In a further preferred embodiment of the present invention, the piezoelectric igniter is a piezoelectric ceramic igniter.

As a further preferred embodiment of the present invention, the management circuit includes a step-down coil, a full-wave rectifier bridge, an energy storage capacitor, and a voltage regulator in this order along the current direction.

As a further preferred embodiment of the present invention, the wireless transmitting module includes an encoder and a wireless communication module, the encoder is connected to the management circuit, and the wireless communication module receives a signal output by the encoder.

As a further preferred aspect of the present invention, the number of the piezoelectric igniters includes three, and the three piezoelectric igniters operate in synchronization.

As a further preferred aspect of the present invention, the piezoelectric igniter further comprises at least one circular groove, and the number of the circular grooves is equal to the number of the piezoelectric igniters.

As a further preferable mode of the present invention, the circular groove is formed in the base, and the formed position of the circular groove is coaxial with the piezoelectric igniter, and one end of the piezoelectric igniter, which is far away from the key switch panel, is disposed in the circular groove.

Through the technical scheme, compared with the prior art, the utility model has the following beneficial effects:

1. the utility model can collect and convert the impact energy generated when the switch is pressed into electric energy, realize the self-generation of the key switch and greatly play the role of saving energy.

2. Compared with the prior art, the wireless transmitting device adopts the piezoelectric igniter and the piezoelectric generating ceramic with low cost, thereby greatly reducing the cost of the wireless transmitting device.

3. In the utility model, the problem of generating capacity is considered, each group of experiments are carried out, and the comparison of experimental data shows that when the number of the piezoelectric igniters is 3, the generated output voltage is highest and the energy is highest, so that the aims of increasing wireless transmitting power and distance and transmitting more data can be fulfilled, and the range of the capacitor can be widened.

Drawings

The utility model is further illustrated with reference to the following figures and examples.

FIG. 1 is a schematic view of the overall structure of embodiment 1 of the present invention;

FIG. 2 is a schematic view of the overall structure of embodiment 2 of the present invention;

fig. 3 is a flow chart of the operation of the managing circuit of the present invention.

In the figure: 1. a key switch panel; 2. a piezoelectric igniter; 3. a circular groove; 4. a housing; 5. a base.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.

In the description of the present invention, it is to be understood that the terms "left side", "right side", "upper part", "lower part", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and that "first", "second", etc., do not represent an important degree of the component parts, and thus are not to be construed as limiting the present invention. The specific dimensions used in the present example are only for illustrating the technical solution and do not limit the scope of protection of the present invention.

Example 1

This embodiment provides a preferred implementation scheme, a piezoelectric impact generator powered wireless transmitting device, as shown in fig. 1, the wireless transmitting device includes a switch part, a piezoelectric igniter 2, a management circuit and a wireless transmitting module, wherein:

the switch part comprises a shell 4, a base 5 and a key switch panel 1, wherein the base 5 is arranged at the bottom of the wireless transmitting device; the housing 4 is covered above the base 5, and the housing 4 is connected with two ends of the base 5.

The key switch panel 1 is mounted on the top of the housing 4, and the key switch panel 1 has buttons.

The piezoelectric igniters 2 are arranged in the shell 4, at least one piezoelectric igniter 2 is arranged, furthermore, at least one circular groove 3 is arranged on the base 5, and the number of the circular grooves 3 is consistent with that of the piezoelectric igniters 2; one end of the piezoelectric igniter 2 penetrates through the top of the shell 4 to be contacted with a button of the key switch panel 1, and the other end of the piezoelectric igniter is arranged in the circular groove 3 to be connected with the base 5; to ensure that when the button is pressed, the weight on the top of the piezoelectric igniter 2 hits the inner piezoelectric stack, thereby generating high voltage. Here, in order to guarantee that the impact force that produces after the top of piezoelectric igniter 2 rebounds can not bounce key switch panel 1, when designing the connected mode between key switch panel 1 and shell 4 and the connected mode between piezoelectric igniter 2 and base 5, with key switch panel 1 embedding in shell 4, make key switch panel 1 and shell 4 form an overall structure, piezoelectric igniter 2 then forms an overall structure with below base 5, also made things convenient for the installation when guaranteeing the contact. Preferably, the piezoelectric igniter 2 employs a piezoelectric ceramic type igniter.

The management circuit is disposed inside the base 5. The management circuit comprises a voltage reduction coil, a full-wave rectifier bridge, an energy storage capacitor and a voltage stabilizer which are sequentially arranged along the current direction. One end of the voltage reduction coil is connected with the output end of the piezoelectric igniter 2, the other end of the voltage reduction coil is connected with the full-wave rectifier bridge, and the voltage reduction coil converts high voltage output by the piezoelectric igniter 2 into low-voltage pulse; the full-wave rectifier bridge converts alternating current generated by the piezoelectric igniter 2 into direct current; the energy storage capacitor is an electrolytic capacitor; the voltage stabilizer converts the voltage on the energy storage capacitor into stable direct current.

The wireless transmitting module is arranged in the base 5 and is connected with the management circuit. The wireless transmitting module comprises an encoder and a wireless communication module, the encoder is connected with a voltage stabilizer in the management circuit, and the wireless communication module receives signals output by the encoder and transmits the signals to a wireless receiving end (the wireless transmitting device is used for realizing self power supply for small-sized sensor nodes and is applied to things with small power such as doorbells in smart homes, and the wireless receiving end is installed at the sensor nodes).

Example 2

The embodiment provides a preferred implementation scheme, namely a wireless transmitting device powered by a piezoelectric impact generator, and as shown in fig. 2, the difference between the embodiment 2 and the embodiment 1 is that the number of the piezoelectric igniters 2 and the circular grooves 3 is the same, and the other structures are the same.

In the embodiment, the number of the piezoelectric igniters 2 is 3, the three piezoelectric igniters 2 are all arranged in the shell 4 along the vertical direction, and the upper ends of the three piezoelectric igniters 2 penetrate through the top of the shell 4 and are respectively contacted with the key switch panel 1; in order to cooperate with the piezoelectric igniters 2, circular grooves 3 with corresponding numbers are arranged on the base 5, the lower ends of the three piezoelectric igniters 2 are respectively arranged in the circular grooves 3, and the three piezoelectric igniters 2 can synchronously and normally work and output high voltage when a button on the key switch panel 1 is pressed.

In the embodiment, the problem of generating capacity is considered, each group of experiments are carried out, and the comparison of experimental data shows that when the number of the piezoelectric igniters 2 is 3, the generated output voltage is highest and the energy is highest, so that the purposes of increasing wireless transmitting power and distance and sending more data can be achieved, and the range of the capacitor can be wide.

As shown in fig. 3, the management circuit in embodiments 1 and 2 has the following operation flow:

the high voltage discharged by the piezoelectric igniter 2 flows to the management circuit, and the voltage reduction is realized through a voltage reduction coil (namely, a single-phase double-winding transformer) in the management circuit, and preferably, the turn ratio of a main winding and a feedback winding of the voltage reduction coil is 1000: 50; the voltage after the voltage reduction flows through a full-wave rectifier bridge, the full-wave rectifier bridge consists of 4 rectifier diodes, two of the rectifier diodes are responsible for the positive direction, and the other two rectifier diodes are responsible for the negative direction, and the alternating voltage generated by the piezoelectric igniter 2 is converted into direct-current voltage; the capacitor is stored in a capacitor, an electrolytic capacitor is used in the capacitor, and the electrolytic capacitor is low in price and meets the requirement of low cost under the condition of meeting the requirement required by design; after the storage capacity reaches a fixed value, the output voltage is stabilized through a voltage stabilizer, and the voltage stabilizer adopts an MAX666 linear voltage stabilizer to maximize the output power; and finally, the wireless transmitting module works, the wireless transmitting module comprises an encoder and a wireless communication module, preferably, the encoder can adopt a PT2262 or HT12E or an ultra-low power consumption singlechip to output a series of binary numbers, and the wireless communication module sends a signal output by the encoder.

The beneficial effects of the embodiment are as follows: the embodiment collects and converts the impact energy generated when the switch is pressed into electric energy, realizes the self-generation of the key switch, and greatly plays a role in saving energy; compared with the prior art, the embodiment adopts the piezoelectric igniter and the piezoelectric power generation ceramic with low cost, so that the cost of the wireless transmitting device is greatly reduced; in the embodiment, the problem of generating capacity is considered, each group of experiments are carried out, and the comparison of experimental data shows that when the number of the piezoelectric igniters is 3, the generated output voltage is highest and the energy is highest, so that the purposes of increasing wireless transmitting power and distance and sending more data can be achieved, and the range of the capacitor can be wide.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The meaning of "and/or" in this application is intended to include both the individual and the simultaneous presence of both.

The term "connected" in the present application may mean either a direct connection between the components or an indirect connection between the components through other components.

In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations can be made by the worker in the light of the above teachings without departing from the spirit of the utility model. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (7)

1. A piezoelectric impulse generator powered wireless transmitter, comprising:

the switch part comprises a shell (4), a base (5) and a key switch panel (1);

the base (5) is arranged at the bottom of the wireless transmitting device;

the shell (4) is covered above the base (5) and is connected with two ends of the base (5);

the key switch panel (1) is arranged at the top of the shell (4);

the piezoelectric igniter (2) is arranged in the shell (4), one end of the piezoelectric igniter (2) penetrates through the top of the shell (4) to be in contact with the key switch panel (1), and the other end of the piezoelectric igniter is connected with the base (5);

a management circuit arranged inside the base (5);

the wireless transmitting module is arranged inside the base (5) and is connected with the management circuit.

2. The piezoelectric impact generator powered wireless transmitter of claim 1, wherein: the piezoelectric igniter (2) adopts a piezoelectric ceramic igniter.

3. The piezoelectric impact generator powered wireless transmitter of claim 1, wherein: the management circuit comprises a voltage reduction coil, a full-wave rectifier bridge, an energy storage capacitor and a voltage stabilizer which are sequentially arranged along the current direction.

4. The piezoelectric impact generator powered wireless transmitter of claim 1, wherein: the wireless transmitting module comprises an encoder and a wireless communication module, the encoder is connected with the management circuit, and the wireless communication module receives signals output by the encoder.

5. The piezoelectric impact generator powered wireless transmitter of claim 1, wherein: the number of the piezoelectric igniters (2) is three, and the three piezoelectric igniters (2) work synchronously.

6. A piezoelectric impulse generator powered wireless transmitter as claimed in claim 1 or 5, characterized in that: the piezoelectric igniter is characterized by further comprising at least one circular groove (3), wherein the number of the circular grooves (3) is consistent with the number of the piezoelectric igniters (2).

7. The piezoelectric impact generator powered wireless transmitter of claim 6, wherein: the round groove (3) is formed in the base (5) and is coaxial with the piezoelectric igniter (2), and one end, far away from the key switch panel (1), of the piezoelectric igniter (2) is arranged in the round groove (3).

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