CN212210985U

CN212210985U - Piezoelectric transmitting device driven by two pulses

Info

Publication number: CN212210985U
Application number: CN202020667592.3U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shenzhen Yibailong Technology Co ltd
Current assignee: Shenzhen Yibailong Technology Co ltd
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-12-22
Anticipated expiration: 2030-04-27

Abstract

The utility model discloses an utilize twice pulse driven piezoelectricity to send out a telegraph signal device, wherein utilize twice pulse driven piezoelectricity to send out a telegraph signal device includes at least a piezoceramics and a signal generation circuit unit, wherein piezoceramics produces a first pulse electric energy and a second pulse electric energy in proper order in the in-process of a loop operation, wherein signal generation circuit unit is connected in electricity in piezoceramics, wherein signal generation unit includes an energy storage circuit unit, a pulse recognition unit that resets, a singlechip and a radio frequency circuit unit, wherein the energy storage circuit unit is connected in electricity in piezoceramics, first pulse electric energy and the second pulse electric energy are saved respectively in the energy storage circuit unit, the pulse recognition unit that resets discerns the second pulse electric energy to trigger the singlechip to the radio frequency circuit unit power supply, the radio frequency circuit unit generates a radio frequency signal.

Description

Piezoelectric transmitting device driven by two pulses

Technical Field

The utility model relates to a piezoceramics wireless communication field, in particular to utilize twice pulse drive's piezoelectricity to send out a signal device.

Background

Self-powered wireless communication technology is widely used in daily life. For example, the self-powered wireless switch comprises a self-powered signal generating module and a signal receiving module, wherein the self-powered signal generating module comprises a self-powered device and a signal generating circuit, the self-powered device is activated to generate electric energy, the self-powered signal generating device generates a control signal after receiving the electric energy, and the signal receiving module controls a lamp to switch between an operating state and a non-operating state after receiving the control signal. The self-powered device of the self-powered signal generating module is an electromagnetic induction micro-generator, which generates electric energy by using the principle of electromagnetic induction. However, the electromagnetic induction micro generator has a large volume, is not favorable for the aesthetic property after installation, has a large noise during operation to influence the user experience, has a complex manufacturing process, and increases the production period and the manufacturing cost of the self-powered signal generation module.

Self-powered signal generating modules using a piezoelectric ceramic 10P such as that shown in fig. 1 as the self-powered device are gradually on the market, and have small volume and simple manufacturing process. The piezoelectric ceramic 10P may replace part of the electromagnetic induction micro-generator on the market. Generally, the electromagnetic induction micro-generator can generate more than about 200uJ of energy after being operated once, thereby emitting a longer code. However, the energy generated after the piezoelectric ceramic 10P is pressed once is only 20uJ-50uJ, which is only 1/4-1/10 of the energy generated by the electromagnetic induction micro-generator. Therefore, it is necessary to continuously collect the energy generated by the piezoelectric ceramic 10P for a long time to meet the subsequent use.

Specifically, referring to fig. 1, the piezoelectric ceramic 10P is actuated to continuously generate a plurality of vibrations, minute energy generated by the plurality of vibrations of the piezoelectric ceramic 10P is continuously collected, and the self-powered signal generating device is driven to generate the control signal after the collected energy reaches a preset threshold. That is, the electric energy generated by the piezoelectric ceramic 10P cannot be immediately utilized, and needs to be accumulated for a certain period of time before the self-powered signal generator is driven to operate. If the self-powered signal generating module is applied to a passive wireless switch, when a user presses the switch for the first time, the energy generated by the piezoelectric ceramic 10P cannot immediately drive the self-powered signal generating device to transmit the control signal, that is, the working state of the lamp cannot be switched quickly, and the user needs to press the switch multiple times or wait for a period of time, wait for the piezoelectric ceramic 10P to generate continuous vibration, and accumulate enough energy, so as to drive the self-powered signal generating module to generate the control signal for controlling the working state of the lamp. Obviously, in the prior art, the self-powered signal generating module using the piezoelectric ceramic 10P as a self-powered device is difficult to be applied to a passive wireless switch, and cannot meet the requirement that a user can rapidly turn on or off a lamp by operating the switch once.

In addition, in the prior art, in order to use the electric energy generated by the piezoelectric ceramic 10P immediately, an elastic device is used to strike or impact the surface of the piezoelectric ceramic 10P at a high speed to obtain a primary pulse of a higher voltage. This method has the disadvantage that the mechanical shock is very noisy, for example, the noise of an electronic lighter is caused by the spring striking the piezoelectric ceramic 10P. In addition, striking the surface of the piezoelectric ceramic 10P causes the life of the piezoelectric ceramic 10P to be significantly shortened, the piezoelectric ceramic 10P is easily damaged, and the device cannot be used for a long time and is poor in practicability. Further, the energy generated by one striking of the piezoelectric ceramic 10P is very small enough to transmit simple control information of a few bits. In the field of remote control, due to the existence of a lot of wireless devices in the environment, in order to enhance the reliability and stability of wireless signals, the wireless signals generally need to include a long string of message data such as a bootstrap code, an address code, data, a check code, etc., and the energy generated by the conventional percussion piezoelectric power generation device cannot support the communication circuit to transmit the long message data.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an utilize twice pulse drive's piezoelectricity to send out the device, wherein utilize twice pulse drive's piezoelectricity to send out the device and can make the energy that a piezoceramics produced can be sent out promptly and use.

Another object of the present invention is to provide an utilize twice pulse-driven piezoelectricity to send out a signal device, wherein utilize twice pulse-driven piezoelectricity to send out a signal device and just can produce a radio frequency signal by the single operation fast, practiced thrift user's latency, improved user experience.

Another object of the present invention is to provide a piezoelectric transmitter using two pulse drivers, wherein the piezoelectric transmitter using two pulse drivers can transmit a longer code, i.e. can transmit a radio frequency signal containing more data.

Another object of the present invention is to provide an utilize twice pulse-driven piezoelectricity to send out device, wherein utilize twice pulse-driven piezoelectricity to send out device and can send the data of 2 at least bytes, can show reinforcing wireless communication's reliability and compatibility, be favorable to enlarging the range of application, improved utilize twice pulse-driven piezoelectricity to send out device's practicality.

Another object of the present invention is to provide an utilize twice pulse-driven piezoelectricity to send out a letter device, wherein utilize twice pulse-driven piezoelectricity to send out a letter device and can not produce the harsh noise at the in-process of being operated, utilize twice pulse-driven piezoelectricity to send out a letter device and can send silently radio frequency signal is favorable to improving user experience, the increase utilize twice pulse-driven piezoelectricity to send out a letter device's application market.

Another object of the present invention is to provide an apparatus for transmitting piezoelectric signals using two pulse drivers, wherein the apparatus for transmitting piezoelectric signals using two pulse drivers is operated once to generate the rf signals, and the apparatus for transmitting piezoelectric signals using two pulse drivers can be applied to an electrical device requiring immediate response to user operation, such as but not limited to a passive wireless switch, a wireless doorbell, etc., thereby improving the practicability and applicability of the apparatus for transmitting piezoelectric signals using two pulse drivers.

Another object of the present invention is to provide an utilize twice pulse-driven piezoelectricity to send out a signal device, wherein utilize twice pulse-driven piezoelectricity to send out a signal device can produce reliable stable radio frequency signal, and then ensured utilize twice pulse-driven piezoelectricity to send out a signal device's reliability.

Another object of the present invention is to provide an utilize twice pulse-driven piezoelectricity to send out a signal device, wherein it is reliable to utilize twice pulse-driven piezoelectricity to send out a signal device can long distance ground transmission radio frequency signal, piezoelectric ceramics can outwards send far distance with the form of electromagnetic wave by the energy that the single operation produced, has enlarged utilize twice pulse-driven piezoelectricity to send out a signal device's application range, and then improved utilize twice pulse-driven piezoelectricity to send out a signal device's practicality and suitability. For example, the energy generated by the single operation of the piezoelectric ceramic can be transmitted outwards in the form of electromagnetic waves over a distance of several tens of meters or even two hundred meters, so that the application range of the piezoelectric signaling device driven by two pulses is greatly expanded.

Another object of the present invention is to provide an apparatus for transmitting a signal using a piezoelectric transmitter driven by two pulses, wherein the apparatus for transmitting a signal using a piezoelectric transmitter driven by two pulses comprises a piezoelectric ceramic and a signal generating circuit unit, wherein the signal generating circuit unit is electrically connected to the piezoelectric ceramic, the piezoelectric ceramic can be driven by the energy generated by the single operation the signal generating unit generates the radio frequency signal.

Another object of the present invention is to provide a piezoelectric transmitter using two pulse driving, wherein the signal generator can transmit reliable high frequency wireless signals by using weak energy generated by the piezoelectric ceramic.

Another object of the present invention is to provide an apparatus for transmitting a signal using piezoelectric actuation of two pulses, wherein the signal generating apparatus is improved to the utilization rate of the energy generated by piezoelectric ceramics, which is favorable for prolonging the service life of piezoelectric ceramics.

Another object of the present invention is to provide a piezoelectric transmitter using two pulse driving, wherein the signal generating circuit unit stores the energy generated by the piezoelectric ceramic and expands the time of the energy generated by the piezoelectric ceramic during the single operation of the piezoelectric ceramic, the signal generating circuit unit generates the radio frequency signal.

Another object of the present invention is to provide an utilize twice pulse drive's piezoelectricity to send out device, once in the circulation operation process, it is right on opposite direction of motion piezoceramics carries out a reciprocating operation, in the middle of this process piezoceramics takes place twice each other for opposite deformation state, has produced two existence times simultaneously and is greater than 100 mS's pulse electric energy, makes utilize twice pulse drive's piezoelectricity to send out device has the energy big, implement simple, noiseless apparent advantage. Of course, the two pulse energies with the existence time longer than 100mS refer to the result of the test of the piezoelectric ceramic under the unloaded state.

Another object of the present invention is to provide an apparatus for transmitting a signal using twice pulse-driven piezoelectricity, once in the cycle operation process, it is not necessary to right the piezoceramics moves with higher speed, even if slow operation the utility model discloses also can produce good control effect, further strengthen the practicality.

According to an aspect of the utility model, the utility model provides an utilize twice pulse drive's piezoelectricity to send out a letter device, it includes:

the piezoelectric ceramic sequentially generates a first pulse electric energy and a second pulse electric energy in the process of one-time cyclic operation; and

a signal generating circuit unit, wherein the signal generating unit comprises an energy storage circuit unit, a reset pulse identification unit, a single chip microcomputer and a radio frequency circuit unit, wherein the energy storage circuit unit is electrically connected to the piezoelectric ceramic, the reset pulse identification unit is electrically connected to the piezoelectric ceramic, the single chip microcomputer is electrically connected to the reset pulse identification unit and the energy storage circuit unit, the radio frequency circuit unit is electrically connected to the single chip microcomputer, the first pulse electric energy and the second pulse electric energy are respectively stored in the energy storage circuit unit, the reset pulse identification unit identifies the second pulse electric energy and triggers the single chip microcomputer to supply power to the radio frequency circuit unit, the radio frequency circuit unit generates a radio frequency signal, wherein the piezoelectric ceramic generates the first pulse electric energy in the deformation process, the piezoelectric ceramic generates the second pulse electric energy in the reset process, wherein the radio frequency circuit unit transmits data of at least 2 bytes, the transmission power of the radio frequency circuit unit is greater than or equal to 1 milliwatt and less than 10 milliwatt, and the radio frequency circuit unit maintains the transmission time of at least 100 us.

According to an embodiment of the present invention, the radio frequency circuit unit is set to have a radio communication rate between 100kbps and 250 kbps.

According to an embodiment of the present invention, the operating frequency of the radio frequency circuit unit is between 100MHZ and 5 GHZ.

at least one piezoelectric ceramic;

the pre-pushing piece is used for actuating the piezoelectric ceramic and pre-pushing one end of the piezoelectric ceramic to a preset direction, the piezoelectric ceramic deforms and generates first pulse electric energy when being subjected to an acting force opposite to the preset direction, and after the acting force is cancelled, the pre-pushing piece pushes the piezoelectric ceramic to recover the initial position, and the piezoelectric ceramic generates second pulse electric energy; and

and the signal generating circuit unit is electrically connected to the piezoelectric ceramic and generates a radio frequency signal under the supply of the first pulse electric energy or the second pulse electric energy.

According to an embodiment of the present invention, the pre-pushing member is an elastic element, or a driving part acted by a force of an elastic element.

According to an embodiment of the present invention, the stroke of the piezoelectric ceramics operated to generate electricity is less than 4 mm.

According to the utility model discloses an embodiment, piezoceramics do a cycle operation in the direction that each other is opposite, the angle that piezoceramics moved is less than 30 degrees.

a signal generating circuit unit, wherein the signal generating circuit unit comprises an energy storage circuit unit, a single chip microcomputer and a radio frequency circuit unit, wherein the energy storage circuit unit is electrically connected to the piezoelectric ceramic, the energy storage circuit unit temporarily stores the first pulse electric energy generated due to deformation or the second pulse electric energy generated due to reset, the single chip microcomputer is electrically connected to the energy storage circuit unit and the radio frequency circuit unit, when the first pulse electric energy or the second pulse electric energy stored in the energy storage circuit unit is supplied to the single chip microcomputer and the radio frequency circuit unit, the single chip microcomputer controls the radio frequency circuit unit to generate the radio frequency signal, wherein in the process of one cycle operation, the signal generating circuit unit transmits 2 bytes of data at least, and the signal generating circuit unit maintains the transmitting time of 100us at least, the longest transmission time is not more than 10ms, wherein the wireless communication rate of the signal generation circuit unit is set between 100kbps and 1Mbps, and wherein the transmission power of the signal generation circuit unit is less than 10 milliwatts.

According to an embodiment of the present invention, the signal generating circuit unit further includes a switch, wherein the switch is disposed between the energy storage circuit unit and the radio frequency circuit, and when the switch is triggered to be turned on, the energy storage circuit unit supplies power to the radio frequency circuit.

According to an embodiment of the invention, the switch is selected from: the type group consisting of a triode, an MCU, an analog switch and a mechanical switch.

Drawings

FIG. 1 shows the operation of a piezoelectric ceramic according to the prior art.

Fig. 2 is a schematic cross-sectional view of a piezoelectric signaling device driven by two pulses according to a preferred embodiment of the present invention.

Fig. 3 is a schematic diagram illustrating the state change process of a piezoelectric ceramic of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 4 is a waveform diagram of energy generated when the piezoelectric ceramics of the piezoelectric signaling device using two pulse driving according to the above preferred embodiment of the present invention is struck or collided.

Fig. 5 is a schematic circuit diagram of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 6 is a schematic diagram of the data content transmitted by the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 7 is a schematic circuit diagram of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 8 is a timing diagram illustrating the state change of the piezoelectric ceramic and the generation of a radio frequency signal by a signal generating circuit unit of the piezoelectric transmitting device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 9 is a schematic cross-sectional view of the piezoelectric signaling device using two pulse driving according to another preferred embodiment of the present invention.

Fig. 10 is a schematic diagram of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 11 is a schematic cross-sectional view of the piezoelectric signaling device using two pulse driving according to another preferred embodiment of the present invention.

Fig. 12 is a schematic cross-sectional view of the piezoelectric signaling device using two pulse driving according to another preferred embodiment of the present invention.

Fig. 13 is a schematic diagram of the state change of the piezoelectric ceramic of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 14 is a schematic view of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 15 is a schematic diagram of the energy variation generated by the piezoelectric ceramics of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 16 is a schematic circuit diagram of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 17 is a schematic cross-sectional view of the piezoelectric signaling device using two pulse driving according to another preferred embodiment of the present invention.

Fig. 18 is a schematic diagram of the state change of the piezoelectric signaling device driven by two pulses according to the above preferred embodiment of the present invention.

Fig. 19 is a schematic diagram of the structure of the piezoelectric signaling device driven by two pulses according to another preferred embodiment of the present invention.

Fig. 20 is a schematic diagram of the structure of the piezoelectric signaling device driven by two pulses according to another preferred embodiment of the present invention.

Detailed Description

The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.

It will be understood by those skilled in the art that in the present disclosure, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the description to indicate that the referenced device or element must have the specified orientation, be constructed and operated in the specified orientation, and not for the purposes of limitation.

It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.

Referring to the drawings 2 to 6, a piezoelectric signaling device 100 driven by two pulses according to a preferred embodiment of the present invention will be described in the following description, wherein the piezoelectric signaling device 100 driven by two pulses can rapidly generate a radio frequency signal to control the operating state of an electrical device by a single operation. It is worth mentioning that the piezoelectric signaling device 100 driven by two pulses can rapidly respond to a single operation of a user to generate the radio frequency signal, so that the piezoelectric signaling device 100 driven by two pulses is suitable for the electrical equipment which needs to respond to the user operation instantly, such as but not limited to a passive wireless switch, a wireless doorbell, a wireless sensor, etc., thereby making the piezoelectric signaling device 100 driven by two pulses have high practicability and applicability. It will be understood by those skilled in the art that the specific application of the piezoelectric signaling device 100 utilizing two pulse drives is merely exemplary and should not be considered as limiting the scope and content of the piezoelectric signaling device 100 utilizing two pulse drives of the present invention.

Specifically, referring to fig. 2 and 5, the piezoelectric signaling device 100 driven by two pulses includes a piezoelectric ceramic 10 and a signal generating circuit unit 20, wherein the piezoelectric ceramic 10 is electrically connected to the signal generating circuit unit 20, and the energy generated by the single operation of the piezoelectric ceramic 10 can drive the signal generating circuit unit 20 to generate the radio frequency signal. It should be noted that the single operation of the piezoelectric ceramic 10 may be pressing, hitting, beating, bumping, bending, ejecting, and other actions, and the single operation may be a direct contact operation of the user, such as but not limited to pressing with a finger or a palm, or an indirect operation of the user, such as but not limited to pressing with an object. In the following description, the piezoelectric ceramic 10 is explained by taking as an example that it is pressed.

Utilize twice pulse drive's piezoelectricity to send out device 100 another apparent advantage is, need not need like prior art quick hitting to hit, vibrate piezoceramics in order to obtain the energy, because the utility model discloses communication circuit's special cooperation sets up for even if slow pressing, crooked piezoceramics also can obtain the communication effect than far away, and the byte number of transmission can exceed the data of 2 bytes, makes piezoceramics 100's the design of electricity generation drive part becomes very simple, even if through the direct slow mortgage piezoceramics of other parts, still can obtain better communication effect, thereby avoided prior art's the drawback that the needs are strikeed fast and are produced the energy and just can be utilized. Therefore, no matter what operation speed is used to operate the piezoelectric transmitter 100 of the present invention, good communication effect can be achieved. That is, the piezoelectric signaling device 100 utilizing two pulse driving is allowed to be operated slowly, and also allowed to be operated at a normal speed or at a fast speed. It is worth mentioning, because operation that can be slow utilize twice pulse drive's piezoelectricity to send out device 100 and realize the communication purpose, consequently, compare in prior art and produce the sound of "papa" when the operation, the utility model discloses can not produce obvious noise almost to realize noiseless design, be the utility model discloses an another is showing the advantage.

Further, referring to fig. 3 and 15, the piezoelectric ceramic 10 can be switched between an initial state, a stressed state, and a reset state, and generates two pulse powers to supply to the signal generation circuit unit 20. Specifically, no current is generated in the piezoelectric ceramic 10 in the initial state, and a user is waited for pressing; when the piezoelectric ceramic 10 is pressed, the piezoelectric ceramic 10 is deformed, the piezoelectric ceramic 10 enters the pressed state from the initial state, the piezoelectric ceramic 10 in the pressed state is deformed, and charges in the piezoelectric ceramic 10 move to generate first pulse electric energy; when the acting force applied to the piezoelectric ceramic 10 is cancelled, the piezoelectric ceramic 10 in the pressed state enters the reset state, the elastic acting force of the piezoelectric ceramic 10 drives the piezoelectric ceramic 10 to recover the initial state, and the electric charge in the piezoelectric ceramic 10 in the reset process moves to generate a second pulse electric energy. That is, a single operation refers to that the piezoelectric ceramic 10 in the initial state undergoes one time of the stressed state and one time of the reset state, that is, the piezoelectric ceramic 10 completes one time of deformation and reset, and generates pulse power when undergoing the stressed state and the reset state, so as to enable the signal generation circuit unit 20 to generate the radio frequency signal. In other words, a single operation completes one cycle of change for the piezoelectric ceramic 10.

It should be noted that the "one cycle operation" in the present invention is not only a description of the operation of the piezoelectric ceramic 10, but also in some prior arts, even if the piezoelectric ceramic is pressed only once, the piezoelectric ceramic is vibrated or excited many times during the pressing process through the setting of the device, and a plurality of continuous pulse electric energy is generated.

It should be noted that the specific implementation of the piezoelectric ceramic 10 is not limited, for example, but not limited to, the piezoelectric ceramic 10 is implemented as a sheet-type piezoelectric ceramic with a diameter of 30 mm, or the piezoelectric ceramic 10 is implemented as a rectangular piezoelectric ceramic with a surface area of 500 mm, and the pulse power generated by the piezoelectric ceramic 10 allows the signal generating circuit unit 20 to generate the radio frequency signal with radio frequency power of 5 mw.

Further, the signal generating circuit unit 20 can fully utilize the pulse power generated by the piezoelectric ceramic 10, and transmit the radio frequency signal with stable data by using the pulse power generated by the piezoelectric ceramic 10. Specifically, the signal generating circuit unit 20 stores energy generated by the piezoelectric ceramic 10, widens the time for the energy to exist, and completes data transmission in the process of deformation and reset of the piezoelectric ceramic 10.

Referring to fig. 5, in the specific embodiment of the piezoelectric transmitting device 100 driven by two pulses according to the present invention, the signal generating circuit unit 20 of the piezoelectric transmitting device 100 driven by two pulses includes an energy storage circuit unit 21, a reset pulse recognition unit 22, an energy delay circuit unit 23, a single chip microcomputer 24 and a radio frequency circuit unit 25, wherein the reset pulse recognition unit 22 is electrically connected to the energy storage circuit unit 21 and the energy delay circuit unit 23, the single chip microcomputer 24 is electrically connected to the energy delay circuit unit 23 and the radio frequency circuit unit 25, and the energy storage circuit unit 21 is electrically connected to the piezoelectric ceramic 10.

Energy generated when the piezoelectric ceramic 10 is in the pressed state and the reset state is stored in the tank circuit unit 21. The reset pulse recognition unit 22 detects the voltage of the tank circuit unit 21. The energy delay circuit unit 23 intermittently supplies power to the single chip microcomputer 24 and the radio frequency circuit unit 25 from the energy stored in the energy storage circuit unit 21, so that the output time of the energy generated by the piezoelectric ceramic 10 is prolonged, and the radio frequency circuit unit 25 is facilitated to transmit the radio frequency signal containing more data and transmitting the radio frequency signal with higher power. Data and programs to be transmitted are burned in the single chip microcomputer 24, when the energy delay circuit unit 23 supplies power to the single chip microcomputer 24, the single chip microcomputer 24 starts to work, and after the single chip microcomputer 24 completes initialization, the data burned in the single chip microcomputer 24 are transmitted outwards through the radio frequency circuit unit 25.

In a specific example of the present invention, the single chip microcomputer 24 and the radio frequency circuit unit 25 are packaged as a whole, that is, the single chip microcomputer 24 and the radio frequency circuit unit 25 are integrated as a single chip. In this way, the area of the circuit wiring can be reduced.

Alternatively, the reset pulse recognition unit 22, the energy delay circuit unit 23, the single chip microcomputer 24 and the radio frequency circuit unit 25 are packaged into a whole, that is, the voltage detection circuit unit 22, the energy delay circuit unit 23, the single chip microcomputer 24 and the radio frequency circuit unit 25 are integrated into a single chip. Thus, the area of the circuit wiring can be further reduced.

It should be noted that any two or more of the reset pulse recognition unit 22, the energy delay circuit unit 23, the single chip microcomputer 24 and the rf circuit unit 25 may be integrated as a single chip, and the specific embodiment is only an example and cannot be a limitation to the content and scope of the piezoelectric signaling device 100 driven by two pulses.

In another specific embodiment of the present invention, the single chip 24 and the rf circuit unit 25 are packaged together to form an integrally packaged rf circuit.

Referring to fig. 5, in this embodiment of the present invention, the tank circuit unit 21 includes a first diode 211, a second diode 212, a third diode 213, a fourth diode 214 and a first capacitor 215, wherein one end of the first diode 211 is electrically connected to one output electrode of the piezoelectric ceramic 10, the other end of the first diode 211 is electrically connected to the first capacitor 215, wherein one end of the second diode 212 is grounded, the other end of the second diode 212 is electrically connected to the third diode 213, wherein one end of the third diode 213 is electrically connected to the other output electrode of the piezoelectric ceramic 10, the other end of the third diode 213 is electrically connected to the first capacitor 215, one end of the fourth diode 214 is grounded, the other end of the fourth diode 214 is electrically connected to the first diode 211. The reset pulse identifying unit 22 is connected in parallel to both ends of the first capacitor 215 for detecting a voltage across the first capacitor 215. The first diode 211 and the second diode 212 form a first branch, and the third diode 213 and the fourth diode 214 form a second branch.

In particular, unlike the prior art, the piezoelectric transmitter 100 driven by two pulses according to the present invention is used to transmit electric energy immediately, and the reset pulse recognition unit 22 is used to identify the second pulse output by the piezoelectric ceramic 10 due to the reset action, and is not used to detect the magnitude of the electric energy continuously collected in the energy storage capacitor as in the prior art.

The utility model discloses in, "utilize a circulation operation" to indicate that direct or indirect operation piezoceramics produces presses down and resets two action state successively and consequently produces an action process of once or twice electric energy, rather than pressing many times piezoceramics 10's process, at this in-process, no matter the speed of operation is fast or slow, utilize twice pulse drive's piezoelectricity to send out device 100 can both accomplish the communication operation of the data of at least once being no less than 2 bytes.

In the prior art, the electric energy generated by driving the piezoelectric ceramic 10 is very weak, so it is very difficult to generate the encoding and transmitting signals by using the weak electric energy, if the encoding signals are to be transmitted, the piezoelectric ceramic must be subjected to continuous vibration, and then the energy of the continuous vibration is collected to complete one work. In the prior art, in order to overcome the defect that energy needs to be continuously collected, a method for transmitting simple codes is used, namely, a simple coded signal of a few bits is transmitted under the condition that piezoelectric ceramic energy supply is very weak, so that a terminal can make corresponding actions after receiving the signal of the few bits. However, this communication method is extremely simple, lacks reliability, and is likely to be interfered and lose the meaning of radio control.

It should be particularly emphasized that a precondition for generating the rf signal by the piezoelectric signaling device 100 driven by two pulses of the present invention is to perform a cycle operation of the piezoelectric ceramic 10, which is to generate instantaneous electric energy and to immediately use the generated instantaneous electric energy to perform a work. Of course, the electric energy generated by one cycle operation is very small, therefore, the piezoelectric transmitting device 100 utilizing two pulse driving combines the power generation mode with the signal transmitting effect, i.e. uses the very small electric energy at once, thereby realizing the transmission of a wireless signal with complex codes. And, radio signal can convey more than hundred meters, if utilize the utility model discloses it is a plurality of piezoceramics 10 goes on parallelly connected electricity of generating, can launch bluetooth broadcast package even to carry out broadcast communication to terminals such as cell-phones.

Referring to fig. 5, the reset pulse identification unit 22 has an input end 221, a ground end 222 and an output end 223, and the energy delay circuit unit 23 includes a power-taking module 231, an inductor 232 and a second capacitor 233. The input terminal 221 of the reset pulse identifying unit 22 is electrically connected to the first capacitor 215, the ground terminal 222 is grounded, and the output terminal 223 is electrically connected to the control terminal of the energy delay circuit unit 23. The inductor 232 is electrically connected to the power-taking module 231 and the second capacitor 233. The second capacitor 233 is electrically connected to the single chip microcomputer 24 and the radio frequency circuit unit 25.

Specifically, when the piezoelectric ceramic 10 is in the initial state, the piezoelectric ceramic 10 remains stationary and the surface is flat, and no current is generated in the piezoelectric ceramic 10. When a pressure of about 1N is applied to the surface of the piezoelectric ceramic 10, the piezoelectric ceramic 10 is deformed by bending, and due to the piezoelectric effect, the electric charge in the piezoelectric ceramic 10 moves and generates an electric current, and the piezoelectric ceramic 10 generates about 25uJ of the first pulse electric energy, which charges the first capacitor 215 through the first branch formed by the first diode 211 and the second diode 212 and charges the voltage in the first capacitor 215 to about 2V to 3V. Since the control terminal of the power-taking module 231 of the energy delay circuit unit 23 is at a low level, when the piezoelectric ceramic 10 generates the first pulse electric energy, the power-taking module 231 does not start to work. In this manner, the electrical energy stored in the first capacitor 215 is conserved.

Further, after the external force applied to the piezoelectric ceramic 10 is removed, the bent piezoelectric ceramic 10 tends to return to flat, and in this process, the piezoelectric ceramic 10 generates the second pulse power of about 25uJ, and the second pulse power charges the first capacitor 215 through the second branch formed by the third diode 213 and the fourth diode 214, and charges the voltage in the first capacitor 215 to about 4V to 5V.

When the reset pulse recognition unit 22 detects that the voltage in the first capacitor 215 is greater than 4V, the output terminal 223 of the reset pulse recognition unit 22 outputs a trigger level, the trigger level is transmitted to the control terminal of the power taking module 231 of the energy delay circuit unit 23, and the power taking module 231 starts to work. The energy delay circuit unit 23 performs on-off state operation by using the inductor 232 and the second capacitor 233, and intermittently supplies power to the single chip microcomputer 24 and the radio frequency circuit unit 25 from the electric energy stored in the first capacitor 215, thereby prolonging the time for the single chip microcomputer 24 and the radio frequency circuit unit 25 to obtain the electric energy supply. That is, the energy delay circuit unit 23 is triggered and then turned on, so as to provide the rf circuit unit 25 with instant power. The energy delay circuit unit 23 supplies the electric energy stored in the first capacitor 215 to the single chip microcomputer 24 and the radio frequency circuit unit 25 for an extended time, and the energy delay circuit unit 23 extends the energy supply time to between 100uS and 10mS according to different parameters of the load, such as different transmission power, and this time refers to the time when the radio frequency circuit unit 25 works to transmit signals, and not to the maintenance time of the sleep or wait state.

Specifically, when the power-taking module 231 is triggered, the power-taking module 231 obtains energy from the first capacitor 215 in a time slot and charges the second capacitor 233 through the inductor 232, when the second capacitor is charged to a preset value, for example, but not limited to, 2V, the power-taking module 231 stops taking power from the first capacitor 215, at this time, the inductor 232 supplies power to the second capacitor 232, and once the voltage of the second capacitor 233 is lower than the preset value, the power-taking module 231 obtains electric energy from the first capacitor 215 again. In this way, the energy delay circuit unit 23 prolongs the time for the first capacitor 215 to supply power to the single chip microcomputer 24 and the radio frequency circuit unit 25 by intermittently supplying power to the first capacitor 215 through the power supply module 231, thereby allowing the radio frequency circuit unit 25 to have sufficient time to transmit more data. Also, the first pulse power and the second pulse power are superimposed in the first capacitor 215, and the first pulse power and the second pulse power stored in the first capacitor 215 are simultaneously consumed.

Preferably, the energy delay circuit unit 23 can prolong the power supply time stored in the first capacitor 215 by more than 500us, so as to facilitate the rf circuit unit 25 to transmit the rf signal containing more data and transmitting more power.

It is worth mentioning that the amount of energy generated by the piezoelectric ceramics 10 can be increased by adjusting the area of the piezoelectric ceramics 10 and increasing the number of the piezoelectric ceramics 10. However, in the practical application of wireless switches, wireless doorbells, sensors, the area of the piezoelectric ceramics 10 is limited. Therefore, through limited increase the area of piezoceramics 10 and combine the utility model electric energy delay circuit unit 23, in the in-process of a loop operation, can with the energy that piezoceramics 10 produced passes through electric energy delay circuit unit 23 prolongs the time of power supply time to 10 ms. Further, the single chip microcomputer 24 is powered on and completes initialization, and data burned in the single chip microcomputer 24 is transmitted to the outside through the radio frequency circuit unit 25. Particularly, the current required by the single chip 24 during operation is less than 1mA, so the power consumption thereof is negligible, and mainly the radio frequency circuit unit 25 consumes much power. If the rf circuit unit 25 transmits a signal for 500uS, assuming that its supply voltage is 3V and the current consumed for transmitting an rf signal with 10dB power is 20mA, then at least 3 × 20 × 0.5 — 30uJ is required for this transmission. It can be seen that, when one piezoelectric ceramic 10 generates 25uJ of electric energy for 2 times of cyclic operation, obviously, two pulse electric energies of pressing and resetting the piezoelectric ceramic 10 must be used together to enable the radio frequency circuit unit 25 to complete one transmission task. Preferably, the operating frequency of the radio frequency circuit unit 25 is between 100MHZ and 5GHZ, which is beneficial to reducing the loss of electromagnetic waves and obtaining better wireless transmission distance. Preferably, the operating frequency of the radio frequency circuit unit 25 is 300MHZ-5GHZ, which is beneficial to reduce the loss of electromagnetic waves and obtain better wireless transmission distance. More preferably, the operating frequency of the radio frequency circuit unit 25 is between 400MHZ and 900 MHZ.

In another preferred example of the present invention, the 25uJ of the first pulse power and the 25uJ of the second pulse power generated by the piezoelectric ceramic 10 are both stored in the first capacitor 215, that is, the first capacitor 215 stores about 50uJ of the power during the deformation and the reset of the piezoelectric ceramic 10. When the 50uJ of electric energy supplies power to the energy delay circuit unit 23, the energy delay circuit unit 23 stabilizes the amplitude of the output voltage at 3V; when 50uJ of energy is output at 3V through the energy delay circuit unit 23, assuming that the current required when the rf circuit unit 25 continuously transmits fm signals in FsK (Tx @10dB) is 20ma, 50uJ of energy may allow the rf circuit unit to maintain a transmission time of 0.38ms (50/3/20/0.38). That is, the single chip microcomputer 24 and the rf circuit unit 25 are initialized within 0.38ms, and transmit a data packet for at least one complete frame.

It is worth mentioning that the power consumption of the single chip microcomputer 24 is extremely low, and the energy required in the initialization process is extremely small. Therefore, power is mainly used for supplying the radio frequency circuit unit 25, and if the time for high-frequency transmission of the radio frequency circuit unit 25 is set to 1ms, then when the transmission rate is 100Kbps, about 6 bytes of data can be transmitted in 0.5ms, and the six bytes of data can contain information such as a synchronization header, an address, data, a check code, and the like, which is enough for the wireless switch to transmit a reliable control command once. If the transmission rate of the rf circuit unit 25 is increased to 300Kbps, the rf circuit unit 25 can repeatedly transmit the control signal 3 times by a single operation of the piezoelectric ceramic 10, which further improves the reliability of the wireless control.

In terms of communication, the utility model considers how to reliably and remotely communicate under the condition of once circulation operation; if reliable communication is required, the number of transmitted bytes is large, the transmitted power is high, obviously, the energy generated by operating the piezoelectric ceramic in one cycle is very weak, and the communication mechanism needs to be optimized to achieve a good effect.

Preferably, in order to enhance the reliability of the communication of the present invention, the data transmitted by the radio frequency circuit unit 25 is set as: in the process of the present invention, the radio frequency circuit unit 25 can transmit at least 2 bytes of data, and, referring to fig. 6, the transmitted data includes but is not limited to: a pilot code, an address code, a data code, a check code, etc., which are transmitted in one cycle operation of the piezoelectric ceramic 10.

Preferably, the wireless communication rate of the radio frequency circuit unit 25 is set to be between 100Kbps and 250Kbps, so as to facilitate repeated transmission of data within the same transmission time, thereby ensuring stability and reliability of data. However, an increase in the communication rate increases the data loss rate, thereby shortening the distance of wireless communication. Preferably, the wireless communication rate of the radio frequency circuit unit 25 is set between 100kbps and 1Mbps to balance the distance and the reliability of control. Preferably, the present invention sets the transmission power of the rf circuit unit 25 to less than 10 mw to transmit as much data as possible while having a longer communication distance. Preferably, the transmission power of the radio frequency circuit unit 25 is set to 1 mw or more and less than 10 mw. It should be understood by those skilled in the art that the specific data and units of the piezoelectric signaling device 100 driven by two pulses during operation are only used for the clarity of the present invention, and should not be construed as limiting the content and scope of the piezoelectric signaling device 100 driven by two pulses.

Preferably, the power generated by one cycle of the state change of the piezoelectric ceramic 10 is very small, and a minimum of 2 bytes of data are transmitted before the power generated during one cycle of the state change of the piezoelectric ceramic 10 is exhausted.

Preferably, when the single chip microcomputer 24 transmits data to the radio frequency circuit unit 25 for transmission, the radio frequency circuit unit 25 maintains the transmission time of at least 100us before the electric energy generated during one change cycle of the piezoelectric ceramic 10 is exhausted.

Preferably, when the single chip microcomputer 24 transmits data to the radio frequency circuit unit 25 for transmission, the maximum transmission time of the radio frequency circuit 25 is not more than 10ms before the electric energy generated in one change cycle of the piezoelectric ceramic 10 is exhausted.

Before the power generated by the single operation of the piezoelectric ceramic 10 is exhausted, the radio frequency signal is transmitted to the space at least once, and after the power is exhausted, the piezoelectric signaling device 100 driven by the two pulses enters a power-off state to wait for the next cycle operation of the piezoelectric ceramic 10.

Referring to fig. 7, there is shown another embodiment of the signal generating circuit unit 20 of the piezoelectric signaling device 100 utilizing two pulse driving according to the present invention. The signal generating circuit unit 20A includes an energy storage circuit unit 21A, a reset pulse recognition unit 22A, a single chip microcomputer 24A, and a radio frequency circuit unit 25A, wherein the reset pulse recognition unit 22A is electrically connected to the energy storage circuit unit 21A and the single chip microcomputer 24A, the energy storage circuit unit 21A is electrically connected to the single chip microcomputer 24A and the radio frequency circuit unit 25A, and the energy storage circuit unit 21A is electrically connected to the piezoelectric ceramic 10.

Referring to fig. 7, in this specific embodiment of the present invention, the energy storage circuit unit 21A includes a first diode 211A, a second diode 212A, a third diode 213A, a fourth diode 214A and a first capacitor 215A, wherein one end of the first diode 211A is electrically connected to one output electrode of the piezoelectric ceramic 10A, the other end of the first diode 211A is electrically connected to the first capacitor 215A, wherein one end of the second diode 212A is electrically connected to ground, the other end of the second diode 212A is electrically connected to the third diode 213A, wherein one end of the third diode 213A is electrically connected to the other output electrode of the piezoelectric ceramic 10, the other end of the third diode 213A is electrically connected to the first capacitor 215A, one end of the fourth diode 214A is electrically connected to ground, the other end of the fourth diode 214A is electrically connected to the first diode 211A. The reset pulse identifying unit 22A is connected in parallel to both ends of the first capacitor 215A for detecting a voltage across the first capacitor 215A. The first diode 211A and the second diode 212A form a first branch, and the third diode 213A and the fourth diode 214A form a second branch.

The reset pulse recognition unit 22A has an input end 221A, a ground end 222A and an output end 223A, and the single chip microcomputer 24A has a control port 241A, an input port 242A, an output port 243A and a ground port 244A. The input terminal 221A of the voltage detection unit 22A is electrically connected to the first capacitor 215A, the ground terminal 222A of the voltage detection unit 22A is grounded, and the output terminal 223A of the voltage detection unit 22A is electrically connected to the control port 241A of the one-chip microcomputer 24A. The input port 242A of the single chip microcomputer 24A is electrically connected to the first capacitor 215A, and the output port 243A of the single chip microcomputer 24A is electrically connected to a power input terminal of the rf circuit unit 25A. The working electric energy of the radio frequency circuit unit 25A is controlled by the control port 241A of the single chip microcomputer 24A. For example, but not limited to, the power input terminal of the rf circuit unit 25A of the signal generating circuit unit 20A is connected to an I/O2 port of the single chip microcomputer 24A, and the operating power of the rf circuit unit 25A is controlled by the I/O port of the single chip microcomputer.

It is worth mentioning that in this example of the present invention, the power supply of the rf circuit unit 25A is completely controlled by the single chip microcomputer 24A, and at the same time, the single chip microcomputer 24A functions as a switch, thereby saving a switch element. Before the single chip microcomputer 24A provides electric energy, the radio frequency circuit unit 25A does not consume electric energy, so that the loss of the electric energy is saved to the maximum extent, and the utilization efficiency of the electric energy is improved. It should be understood by those skilled in the art that the single chip microcomputer 24A can directly or indirectly control the power supply of the rf circuit unit 25A, and the specific embodiment of the single chip microcomputer 24A controlling the rf circuit unit 25A is only an example and is not a limitation to the content and scope of the piezoelectric signaling device 100A using two-time pulse driving according to the present invention.

Specifically, when the piezoelectric ceramic 10 is in the initial state, the surface of the piezoelectric ceramic 10 is flat, and no current is generated in the piezoelectric ceramic 10. When pressure is applied to the surface of the piezoelectric ceramic 10, the piezoelectric ceramic 10 is bent and deformed, and due to the piezoelectric effect, electric charges in the piezoelectric ceramic 10 move and generate electric current, and the piezoelectric ceramic 10 generates the first pulse electric energy, which charges the first capacitor 215A through the first branch circuit formed by the first diode 211A and the second diode 212A. The input port 242A of the single chip microcomputer 24A obtains electric energy, and starts to enter a micro-power consumption standby state, at this time, the electric energy consumed by the single chip microcomputer 24A in the micro-power consumption state is very small, and most of the first pulse electric energy stored in the first capacitor 215A is temporarily stored.

Particularly, since the power consumed by the single chip microcomputer 24A is very small, when the input port 242A of the single chip microcomputer 24A obtains power, the single chip microcomputer 24A may further enter an initialization state of micro power consumption, that is, a working state of micro power consumption.

Further, after the external force applied to the piezoelectric ceramic 10 is removed, the bent piezoelectric ceramic 10 tends to return to flat, and in this process, the piezoelectric ceramic 10 generates the second pulse power due to the reset, the second pulse power charges the first capacitor 215A through the second branch formed by the third diode 213A and the fourth diode 214A, and the voltage in the first capacitor 215A is significantly increased. Preferably, after the second pulse power is supplied, the voltage in the first capacitor 215A is charged to 3V-8V.

When the reset pulse recognition unit 22A detects that the voltage in the first capacitor 215A is greater than a predetermined value, such as but not limited to 4V, the output 223A of the reset pulse recognition unit 22A outputs a trigger level to the control port 241A of the single chip microcomputer 24A, such as but not limited to I/O1, and the single chip microcomputer 24A starts to operate. In other words, the single chip microcomputer 24A is triggered and then turned on, so as to provide instant electric energy for the radio frequency circuit unit 25A. Under program control, the output port 243A of the single chip 24A outputs a high level to supply power to the radio frequency circuit unit 25A, and the radio frequency circuit unit 25A transmits the radio frequency signal to the outside after obtaining the power supply. That is, the first pulse power and the second pulse power stored in the first capacitor 215 simultaneously supply power to the single chip microcomputer 24A, and before the single chip microcomputer 24A operates, the radio frequency circuit unit 25A is not supplied with power, which is beneficial to reducing the power consumption of the radio frequency circuit unit 25A and improving the utilization rate of energy.

It should be noted that, in some embodiments, the reset pulse identification unit 22A may also trigger the control port 241A of the single chip microcomputer 24A to output the electric energy by identifying the arrival of the second pulse electric energy.

In some specific embodiments of the present invention, the reset pulse recognition unit 22A and the single chip microcomputer 24A may be packaged as a chip.

More specifically, referring to fig. 8, a voltage V1 generated when the piezoelectric ceramic 10 is pressed is stored in the first capacitor 215A. When the pressing operation is released, the voltage generated in the reset process by the piezoelectric ceramic 10 also charges the first capacitor 215A. When the voltage generated by resetting reaches the trigger voltage value V2, or the reset pulse recognition unit 22A recognizes that the second pulse power arrives, the power generated by the pressing and resetting pre-stored in the first capacitor 215A is combined to supply power to the single chip microcomputer 24A and the radio frequency circuit unit 25A, so that the radio frequency delay single circuit unit 25A can obtain longer power supply time and power supply power. Further, the section a is a preparation section of the single chip microcomputer 24A, and the single chip microcomputer 24A is started after obtaining power supply and performs initialization work. After the initialization of the single chip microcomputer 24A is completed, a program preset in the single chip microcomputer 24A causes the radio frequency circuit unit 25A to start working. The section b is a transmission section of the radio frequency circuit unit 25A, and the radio frequency circuit unit 25A transmits the radio frequency signal according to a transmission mode set by a program built in the single chip microcomputer 24A. The radio frequency circuit unit 25A transmits at least one complete data packet in the radio frequency manner, enters a power-off state, and waits for the next repeated operation.

It should be noted that fig. 8 is only used to clearly illustrate the operation sequence of the present invention, and not to limit the piezoelectric signaling device 100 using two-time pulse driving according to the present invention, it should be understood by those skilled in the art that the waveforms shown in different measurement methods may be different.

Preferably, the capacitance of the first capacitor 215A is between 1.5uF and 10uF, so as to avoid that the weak electric energy generated by the piezoelectric ceramic 10A cannot charge the voltage of the first capacitor 215A to the predetermined value due to too large capacitance, and further cause that the subsequent circuit operation cannot be performed normally. Since the energy generated by the piezoelectric ceramic 10 in one cycle is very weak, if the capacitance of the first capacitor 215A is too large, the required voltage cannot be charged, and when the capacitance of the first capacitor 215A is less than 10uF, the voltage across the first capacitor 215A can be charged to 4-6V by 2 times of pulse electric energy generated by the piezoelectric ceramic 10 in one cycle, so that sufficient voltage can support the load operation.

It is particularly preferred to set the capacity of the first capacitor 215A between 2.2uF and 4.7uF to obtain an optimal energy storage effect.

Preferably, referring to fig. 7, the signal generating circuit unit 20A further includes a fifth diode 26A, wherein one end of the fifth diode 26A is grounded, and the other end is electrically connected to the first capacitor 215A, so as to prevent the charging voltage across the first capacitor 215A from being too high to damage the single chip microcomputer 24A.

It should be noted that, in the embodiment of the piezoelectric signaling device 100 utilizing two pulse driving according to the present invention, the signal generating circuit unit 20 stores the first pulse power and the second pulse power respectively generated by the piezoelectric ceramic 10 in the stressed state and the reset state in the first capacitor 215A, and then releases the superposed energy simultaneously to supply the radio frequency circuit unit 25 to generate the radio frequency signal. The two pulse electric energy generated when the piezoelectric ceramic 10 is deformed under pressure and the stress is removed are combined to generate the beneficial effects of electric energy superposition and energy doubling, so that the electric energy generated by the piezoelectric ceramic 10 is favorably and fully utilized, and the process is limited to a cyclic operation process in which the acting force is applied to the piezoelectric ceramic 10 and the acting force is removed. It will be understood by those skilled in the art that the manner of superimposing the pulsed electrical energy generated by the piezoelectric ceramic 10 is merely exemplary and should not be construed as limiting the scope and content of the piezoelectric signaling device 100 utilizing two pulse drives in accordance with the present invention. For example, in a specific example of the present invention, the energy delay circuit unit 23A may be directly triggered to operate by the second pulse power generated when the piezoelectric ceramic 10 is released from being pressed. In another specific example of the present invention, the second pulse electric energy generated when the piezoelectric ceramic 10 is released from being pressed may be used to directly trigger the single chip microcomputer 24A to operate.

It is worth mentioning that the self-powered signal generating device 100 of the present invention can transmit the high-frequency wireless signal by using the very weak electric energy, for example, the weak electric energy stored in the capacitor below 10uF or even 4.7uF can be used to transmit the encoded and reliable high-frequency information at least once. And in prior art, send radio signal and need dozens of uF or even several hundreds of uF's condenser to provide the electric energy, compare prior art, utilize twice pulse drive's piezoelectricity to send out the drive electric energy that device 100 needs only be one fraction or even ten times of prior art, consequently, utilize twice pulse drive's piezoelectricity to send out device 100 to have wider application prospect. In addition, by means of superimposing the pulse electric energy twice, the radio frequency signal can be sent to a distance of about 100 meters by the instant electric energy generated by the piezoelectric ceramic 10 in the process of one cycle change, and the radio frequency signal has high reliability.

According to some preferred embodiments of the present invention, referring to fig. 2, 9-14, 17 and 18, the piezoelectric signaling device 100 driven by two pulses comprises a base 30, wherein the base 30 has an active space 301, and the piezoelectric ceramic 10 is held in the active space 301 in a manner allowing deformation. The piezoelectric ceramic 10 is subjected to external force and then bends and deforms towards the inside of the active space 301. Preferably, the height of the active space 301 of the base 30 is set to be equal to or less than 3mm to allow the piezoelectric ceramic 10 to generate a displacement amount of less than 3 mm. Preferably, the height of the active space 301 of the base 30 is set between 0.4mm and 2 mm.

As shown in fig. 13 and 14, compared with the prior art of generating electricity by impacting and impacting piezoelectric ceramics, the piezoelectric signaling device 100 utilizing two pulse driving of the present invention generates electricity by slowly bending the piezoelectric ceramics, thereby realizing a special mute effect. Therefore, the utility model discloses quite in the operation process, of course, slow word mean normally press, or press the action slightly slower than normally pressing, can not be as right the utility model utilize twice pulse drive's piezoelectricity to send out the restriction of device 100.

It should be particularly noted that, in some embodiments, as shown in the power generation structures of fig. 12 to 14, compared with the way of generating electric energy by impacting and hitting piezoelectric ceramics, in addition to the mute effect, the present embodiment generates energy at a density significantly higher than that of the prior art, and generates energy for a time significantly longer than that of the prior art. The waveform of the pulse of electrical energy generated by impacting and hitting the piezoelectric ceramic 10 is shown in fig. 4, while the waveform of the electrical energy generated by cyclically operating the piezoelectric ceramic 10 once in the present embodiment is shown in fig. 15, and it can be seen that the energy of fig. 15 is significantly larger than that of fig. 4.

The piezoelectric signaling device 100 driven by two pulses further comprises a driving member 40, wherein the driving member 40 is operably held above the piezoelectric ceramic 10, and indirectly applies an external force to the piezoelectric ceramic 10 by operating the driving member 40, and drives the piezoelectric ceramic 10 to deform, and when the external force applied to the driving member 40 is removed, the external force applied to the piezoelectric ceramic 10 is simultaneously removed, and the piezoelectric ceramic 10 gradually returns to the original state.

Referring to fig. 2, 3, 5 to 11, in some specific examples of the present invention, the piezoelectric ceramic 10 is held above the active space 301 of the base 30 in a manner that the middle portion of the piezoelectric ceramic is suspended, that is, both ends or the periphery of the piezoelectric ceramic 10 are fixed to the base 30, the driving member 40 is held above the middle portion of the piezoelectric ceramic 10, and the piezoelectric ceramic 10 is switched among the initial state, the deformation state and the reset state by a center driving manner. Preferably, the piezoelectric ceramic 10 is welded to the base 30. Optionally, the piezoelectric ceramic 10 is embedded in the base 30. It will be understood by those skilled in the art that the specific connection between the piezoelectric ceramic 10 and the base 30 is merely illustrative and should not be construed as limiting the scope and content of the piezoelectric signaling device 100 utilizing two pulse driving.

Referring to fig. 12 to 14 and 16 to 18, in other specific examples of the present invention, the piezoelectric ceramic 10 is held in the active space 301 with one end suspended, and the piezoelectric ceramic 10 is deformed by being driven by a single side.

Specifically, referring to fig. 17 and 18, the base 30 includes a base plate 31 and a support member 32, wherein the support member 32 is disposed above the base plate 31, and the movable space 301 is formed between the base plate 31 and the support member 32, the fixed end 11 of the piezoelectric ceramic 10 is fixed to an upper portion of the support member 32, and the movable end 12 of the piezoelectric ceramic 10 is suspended and allowed to move up and down in the movable space 301. The actuator 40 is held at an output pole of the active end of the piezoelectric ceramic 10. The driving member 40 is driven by an external force to deform the piezoelectric ceramic 10 and generate the first pulse power. At a preset position, the driving member 40 is unhooked, that is, the driving member 40 is separated from the movable end of the piezoelectric ceramic 10, the external force applied to the piezoelectric ceramic 10 is removed, the piezoelectric ceramic 10 catapultly restores the initial position, and the second pulse electric energy is generated in the process of restoring the initial position. The piezoelectric ceramic 10 catapultly generates a large amount of energy at the moment of pressing and the moment of releasing the pressing.

Further, the "one-cycle operation" of the present invention further includes performing one-cycle reciprocating operation on the piezoelectric ceramic 10 in the opposite moving direction by using a mechanical device, wherein the relative movement distance of the moving end 12 of the piezoelectric ceramic 10 is 0.4mm to 4mm in the process.

Further, the "one-cycle operation" of the present invention also includes a reciprocating operation of the piezoelectric ceramic 10 in the opposite direction of movement by a mechanical device, in which the moving end 12 of the piezoelectric ceramic 10 is always in a state limited by an operating device, not in a free vibration state.

Further, the "one cycle operation" of the present invention further includes performing one reciprocating operation on the piezoelectric ceramic in the opposite moving direction by using a mechanical device, wherein the relative moving angle α of the moving end 12 of the piezoelectric ceramic is smaller than 30 degrees in the process.

It should be noted that the piezoelectric ceramic 10 of the self-powered signal generating device 100 of the present invention generates a strong pulse power in the process of restoring the initial position. Further, the piezoelectric ceramic 10 generates two pulse electric energies which can be used immediately in the process of deformation and deformation resetting, the two pulse electric energies are electromechanical effects directly generated by pressing and resetting operations, and under the influence of a structure, a plurality of sharp spines may appear on the waveform of the output pulse electric energy, but the output pulse electric energy still belongs to the two pulse electric energies generated by the pressing and resetting operations.

Referring to fig. 18, the unhooking device of the driving member 40 may be designed into various structures, so long as the pressing and unhooking ejection effects on the piezoelectric ceramic can be achieved, and the secondary electric energy is generated and utilized, which belongs to the protection scope of the present invention; therefore, the utility model discloses do not restrict to mechanical ejection mechanism. The implementation shown in fig. 18 can also generate stronger power as shown in fig. 15, which can generate 50% more power than the prior art, and thus the capability of driving the circuit is stronger.

Referring to fig. 12 to 14, in another specific example of the present invention, the base 30 of the piezoelectric signaling device 100 driven by two pulses further comprises a pre-pushing member 33, wherein the pre-pushing member 33 and the supporting member 32 are respectively disposed on the upper portion of the substrate 31 at intervals, and two ends of the pre-pushing member 33 are respectively connected to the substrate 31 and the movable end of the piezoelectric ceramic 10. The movable end of the piezoelectric ceramic 10 is abutted between the driving member 40 and the pre-pushing member 33.

The movable end 12 of the piezoelectric ceramic 10 is pushed towards a preset direction by the pre-pushing piece 33, so as to increase the movement stroke H of the piezoelectric ceramic 10, and further enable the piezoelectric ceramic 10 to generate pulse electric energy with larger energy. Specifically, when the piezoelectric ceramic 10 is subjected to an acting force opposite to the preset direction, the piezoelectric ceramic 10 deforms and generates the first pulse electric energy, and after the acting force is cancelled, the pre-pushing piece pushes the piezoelectric ceramic 10 to recover to the initial position, so that the piezoelectric ceramic 10 generates the second pulse electric energy. Preferably, the piezoelectric ceramic 10 is pre-pushed upwards by the pre-pushing element 33, and the movable end 12 of the piezoelectric ceramic 10 in the initial state bends upwards slightly and lifts up, so that a large stroke is generated after the piezoelectric ceramic 10 is deformed by a force, and the piezoelectric ceramic 10 is not damaged. That is, the movable end 12 of the piezoelectric ceramic 10 is pushed by the pre-pusher 33 to form a state in which the movable end is slightly bent upward and lifted.

The specific embodiment of the pre-push member 33 is not limited. Preferably, the pre-pushing member 33 is an elastic element, such as but not limited to a spring. Alternatively, the pre-push member 33 is a driving part acted by the force of an elastic element.

For example, the safe distance that the piezoelectric ceramic 10 in the initial state bends upward in the horizontal direction under the action of the pre-pushing element 33 is 1mm, and the safe distance that the piezoelectric ceramic 10 deforms downward in the horizontal direction after being affected by an external force is 1 mm. That is to say, since the piezoelectric ceramic 10 is pre-pushed by 1mm in one direction and then bent by 1mm in the other direction, the deformation stroke of the piezoelectric ceramic 10 is 2mm, and the recovery deformation of the piezoelectric ceramic 10 is also 2mm, so that the deformation capability of the piezoelectric ceramic 10 is fully utilized, and thus the pulse electric energy with large energy is obtained twice as shown in fig. 15, and thus the piezoelectric ceramic 10 generates two times of large pulse electric energy in one cycle change process, and can drive the signal generating circuit unit 20 to generate a high-frequency radio signal. In this way, the wireless self-powered signal generating device 100 can be used immediately without waiting in a single operation, and the piezoelectric ceramic 10 is protected, and the service life of the piezoelectric ceramic 10 is prolonged. Preferably, the motion stroke of the piezoelectric ceramic 10 operated to generate electricity is less than 4 mm.

Referring to fig. 16, in this specific embodiment of the present invention, the signal generating circuit unit 20 uses the second pulse power to trigger a switch 26C to be turned on, so as to use the first pulse power and the second pulse power which are superimposed at the same time.

Specifically, in this specific embodiment of the self-powered signal generating device 100 of the present invention, the signal generating circuit unit 20C of the piezoelectric signal transmitting device 100 driven by two pulses includes a tank circuit unit 21C, a single chip microcomputer 24C, a radio frequency circuit unit 25C and a switch 26C, wherein the switch 26C is electrically connected to the tank circuit unit 21C and the single chip microcomputer 24C, the single chip microcomputer 24 is electrically connected to the radio frequency circuit unit 25C, and the tank circuit unit 21C is electrically connected to the piezoelectric ceramic 10.

It is emphasized that this embodiment is merely illustrative of one way to pre-stroke the piezoelectric ceramic 10 to produce a larger operating stroke to produce a greater energy output. It should be understood by those skilled in the art that in practical applications, there are many ways to generate the pre-push, but any way to generate the electric energy twice by using a mechanical device to press and bend the moving end 12 of the piezoelectric ceramic 10 in advance in the initial state and to make the moving end 12 of the piezoelectric ceramic 20 move in the opposite direction and perform the resetting operation during the operation process belongs to the protection scope of the piezoelectric signaling device 100 and the signal generating method thereof using the two-time pulse driving of the present invention.

Referring to fig. 16, the tank circuit unit 21C includes a first diode 211C, a second diode 212C, a third diode 213C, a fourth diode 214C and a first capacitor 215C, wherein one end of the first diode 211C is electrically connected to one output electrode of the piezoelectric ceramic 10, the other end of the first diode 211C is electrically connected to the first capacitor 215C, wherein one end of the second diode 212C is grounded, the other end of the second diode 212C is electrically connected to the third diode 213C, wherein one end of the third diode 213C is electrically connected to the other output electrode of the piezoelectric ceramic 10, the other end of the third diode 213C is electrically connected to the first capacitor 215C, one end of the fourth diode 214C is grounded, and the other end of the fourth diode 214C is electrically connected to the first diode 211C. The first diode 211C and the second diode 212C form a second branch, and the third diode 213C and the fourth diode 214C form a first branch.

The switch 26C has an input port 261C, an output port 262C, and an trigger port 263C, wherein the input port 261C of the switch 26C is electrically connected to the first capacitor 215C, and the single chip microcomputer 24C has a control port 241C, an input port 242C, an output port 243C, and a ground port 244C. The input port 261C of the switch 26C is electrically connected to the first capacitor 215C, and the output port 262C of the switch 26C is electrically connected to the input port 242C of the one-chip microcomputer 24C. The ground port 244C of the single chip microcomputer 24C is grounded.

Specifically, when the piezoelectric ceramic 10 is in the initial state, the piezoelectric ceramic 10 remains stationary and the surface is flat, and no current is generated in the piezoelectric ceramic 10. When pressure is applied to the surface of the piezoelectric ceramic 10, the piezoelectric ceramic 10 is bent and deformed, and due to the piezoelectric effect, electric charges in the piezoelectric ceramic 10 move and generate electric current, and the first pulse electric energy generated by the piezoelectric ceramic 10 charges the first capacitor 215C through the first branch formed by the third diode 213C and the fourth diode 214C.

Further, after the external force applied to the piezoelectric ceramic 10 is removed, the bent piezoelectric ceramic 10 tends to return to flat, and in this process, the piezoelectric ceramic 10 generates the second pulse power, and the second pulse power charges the first capacitor 215C through the second branch formed by the first diode 211C and the second diode 212C, and the voltage in the first capacitor 215C increases. The first pulse power and the second pulse power generated by the piezoelectric ceramic 10 are both stored in the first capacitor 215C in a superimposed manner, so that the first capacitor 215C obtains nearly twice the power. Meanwhile, in the process that the piezoelectric ceramic 10 recovers to the initial state, the second pulse power generated by the piezoelectric ceramic 10 triggers the trigger end 263C of the switch 26C, so that the switch 26C is turned on, and the first pulse power and the second pulse power stored in the first capacitor 215C simultaneously supply power to the single chip microcomputer 24C and the radio frequency circuit unit 25C. Data and programs to be transmitted are burned in the single chip microcomputer 24C, when the single chip microcomputer 24C is powered on, the single chip microcomputer 24C starts to work, and after the single chip microcomputer 24C completes initialization, the data burned in the single chip microcomputer 24C is transmitted outwards through the radio frequency circuit unit 25C, and then the radio frequency signal is transmitted at least once. The control port 241C of the mcu 24C outputs a maintaining signal to the trigger end 263C of the switch 26C to maintain the switch 26C to be turned on until the power is exhausted.

It should be noted that the specific implementation of the switch 26C is not limited, and the switch 26C includes but is not limited to one of a transistor, an MCU, an analog switch, and a mechanical switch. Further, the specific embodiment for triggering the switch 26C is not limited, and the switch 26C may be triggered by the pulse power generated by the piezoelectric ceramic 10, or by the control signal generated by the single chip 24, and the like, and it should be understood by those skilled in the art that the specific triggering manner of the switch 26 is merely an example, and is not a limitation to the content and scope of the piezoelectric signaling device 100 and the signal generating method thereof using two pulse driving according to the present invention.

Referring to fig. 2, in a specific example of the present invention, the signal generating circuit unit 20 of the piezoelectric signaling device 100 driven by two pulses is held at one side of the base 30. Referring to fig. 9 to 12, in other specific examples of the present invention, the signal generating circuit unit 20 is disposed above, below, or embedded inside the base 30. Preferably, the base 30 may be made of one or a combination of glass fiber, paper, metal, and plastic, or a circuit board, such as a PCB. It should be understood by those skilled in the art that the specific embodiments of the signal generating circuit unit 20 and the base 30 are only examples and should not be construed as limiting the content and scope of the piezoelectric signaling device 100 utilizing two pulse driving according to the present invention.

Referring to fig. 2, 9 and 12, in some preferred examples of the present invention, the piezoelectric signaling device 100 driven by two pulses comprises a housing 50, wherein the housing 50 comprises a receiving member 51 and an operating member 52, wherein the operating member 52 is disposed on the receiving member 51, a receiving space 501 is formed between the receiving member 51 and the operating member 52, the piezoelectric ceramic 10, the signal generating circuit unit 20 and the base 30 are received in the receiving space 501 of the housing 50, and the piezoelectric ceramic 10 is located between the operating member 52 and the base 30.

Referring to fig. 2, in a specific example of the present invention, one end of the operating member 52 is pivotally connected to one end of the receiving member 51, the other end of the operating member 52 is movably held above the piezoelectric ceramic 10, the driving member 40 extends downward from the operating member 52, and the driving member 40 is disposed between the piezoelectric ceramic 10 and the operating member 52. By operating the operating member 52, the operating member 52 rotates relative to the accommodating member 51, the driving member 40 moves downward and presses the piezoelectric ceramic 10, so that the piezoelectric ceramic 10 is converted to the pressed state in the initial state, and a first pulse power is generated. When the acting force applied to the operating element 52 is removed, the piezoelectric ceramic 10 returns to the initial state, generates a second pulse electric energy, and drives the driving element 40 and the operating element 52 to return to the initial position. Preferably, as shown in fig. 9, 12 and 14, the operating member 52 of the housing 50 is fixed to the accommodating member 51 and closes the accommodating space 501, so as to prevent dust from entering the accommodating space 501 and affecting the normal operation of the piezoelectric signaling device 100 driven by two pulses.

Referring to fig. 9, 12 and 14, in another embodiment of the present invention, the operation member 52 further has a mounting opening 502, wherein the mounting opening 502 is formed in the operation member 52, the mounting opening 502 is communicated with the receiving space 501, and the mounting opening 520 corresponds to a position where the piezoelectric ceramic 10 can be deformed. The actuating member 40 is movably retained in the mounting opening 502. When the driving member 40 is pressed, the driving member 40 moves toward the piezoelectric ceramic 10 in the assembling opening 502, and drives the piezoelectric ceramic 10 to deform and generate a plurality of first pulse electric energy. After the external force applied to the driving member 40 is removed, the piezoelectric ceramic 10 returns to the initial state, generates a second pulse power, and drives the driving member 40 and the operating member 52 to return to the initial position.

Preferably, the piezoelectric signaling device 100 driven by two pulses further comprises an elastic accelerating element 60, wherein the elastic accelerating element 60 is disposed above the piezoelectric ceramic 10, and when the elastic accelerating element 60 is subjected to an external force, an instant accelerating force is generated, and the piezoelectric ceramic 10 is forced to rapidly generate a deformation, so as to rapidly output a higher voltage.

Preferably, the elastic accelerating element 60 is disposed between the piezoelectric ceramic 10 and the driving element 40, and the elastic accelerating element 60 transmits pressure to drive the piezoelectric ceramic 10 to output pulse power in multiples. The embodiment of the elastic acceleration member 60 is not limited, for example, but not limited to, the elastic acceleration member 60 is made of various metals or plastics. The elastic acceleration member 60 can increase the pressing feeling of the user. For example, the piezoelectric signaling device 100 driven by two pulses is applied to a passive wireless switch, when a user presses the wireless switch, the elastic acceleration member 60 deforms, and the user obtains a critical feeling of jerkiness due to the springing property of metal, so that the user can sense whether the switch is pressed in place, thereby improving the operation feeling of the passive wireless switch.

Preferably, the piezoelectric signaling device 100 driven by two pulses further comprises a buffer 80, wherein the buffer 80 is disposed between the base 30 and the piezoelectric ceramic 10, and the buffer 80 is disposed at a position where the base 30 and the piezoelectric ceramic 10 contact each other. The buffer 80 can effectively prevent the piezoelectric transmitting device 100 driven by two pulses from generating large vibration noise during the use process. Specifically, during operation, since the force of the elastic accelerating element 60 directly acts on the surface of the piezoelectric ceramic 10, the vibration energy is transmitted to the operating element 52 through the piezoelectric ceramic 10, and thus a large vibration noise is easily generated, and the buffering element 80 is made of a flexible material, so that the vibration can be absorbed, and the noise can be significantly eliminated, thereby improving the comfort and practicability of use. The flexible material may be implemented as, but not limited to, silicone, shock pads, plastic, or other materials known to those skilled in the art.

Further, the power of the piezoelectric signaling device 100 driven by two pulses can be increased by increasing the number of the piezoelectric ceramics 10 to meet different requirements. The piezoelectric ceramics 10 may be implemented in two or more numbers.

Specifically, referring to fig. 11, in a specific example of the present invention, the piezoelectric ceramics 10 is implemented in two, and the piezoelectric signaling device 100 driven by two pulses further comprises a fixed seat 70, wherein the fixed seat 70 has a movable passage 701. The fixing base 70 is provided on the base 30 such that the movable passage 701 corresponds to the movable space 301 of the base 30, and the two piezoelectric ceramics 10 are fixed by the fixing base 70, and the two piezoelectric ceramics 10 are held at the movable space 301 of the base 30 and the movable passage 701 of the fixing base 70 with a space therebetween.

Preferably, two piezoelectric ceramics 10 are disposed one above the other, and one driving member 40 extends downward from the other output pole of the upper piezoelectric ceramics 10 to the one output pole of the lower piezoelectric ceramics 10. In this case, the driving member 40 is a thruster, and the elastic accelerating member 60 is disposed at an output pole of the piezoelectric ceramic 10 above. When the elastic accelerator 60 is pressed, both the piezoelectric ceramics 10 are driven to deform, and after the external force applied to the elastic accelerator 60 is removed, the two piezoelectric ceramics 10 recover the initial state, and in the process that the state of the piezoelectric ceramics completes one cycle change, the piezoelectric ceramics 10 generate more energy.

It will be understood by those skilled in the art that the specific number and embodiments of the piezoelectric ceramics 10 are only examples, and should not be construed as limiting the content and scope of the piezoelectric signaling device 100 and the signal generating method thereof using two pulse driving according to the present invention.

According to another aspect of the present invention, the present invention further provides a signal generating method of the piezoelectric transmitting device 100 using two pulse driving, the signal generating method comprising the steps of:

(a) superposing the first pulse electric energy and the second pulse electric energy generated by the piezoelectric ceramic 10 in a single operation process;

(b) the first pulse electric energy and the second pulse electric energy are supplied to the singlechip 24 and the radio frequency one-way unit 25; and

(c) the rf circuit unit 25 generates an rf signal.

According to an embodiment of the present invention, the method further comprises the step (c) in the step (a): the first pulse power and the second pulse power are sequentially stored in a first capacitor 215.

According to an embodiment of the present invention, step (d) is further included after step (a): the time for the single chip microcomputer 24 and the radio frequency circuit unit 25 to obtain the power supply is prolonged.

According to an embodiment of the present invention, the step (d) further comprises the steps of:

(d.1) detecting a voltage across the first capacitor 215; and

(d.2) when the voltage across the first capacitor 215 reaches a preset value, triggering the energy delay circuit unit 23 to intermittently supply power to the single chip microcomputer 24 and the radio frequency circuit unit 25 from the electric energy stored in the first capacitor 215.

According to an embodiment of the present invention, the step (d) further comprises the steps of: the second pulse electric energy triggers the energy delay circuit unit 23 to intermittently supply the electric energy stored in the first capacitor 215 to the single chip microcomputer 24 and the radio frequency circuit unit 25.

According to an embodiment of the present invention, before the step (b), the method further comprises the steps of:

(b.1) detecting a voltage across the first capacitor 215; and

(b.2) when the voltage across the first capacitor 215 reaches a preset value, triggering the single chip microcomputer 24 to start working, and controlling the working electric energy of the radio frequency circuit unit 25 by the single chip microcomputer 24.

According to an embodiment of the present invention, before the step (b), the method further comprises the steps of: the second pulse electric energy triggers the single chip microcomputer 24 to start working, and the single chip microcomputer 24 controls the working electric energy of the radio frequency circuit unit 25.

According to an embodiment of the present invention, before the step (b), the method further comprises the steps of: the second pulse of electrical energy triggers the switch 26.

According to an embodiment of the present invention, step (e) is further included before step (a): the first pulse power and the second pulse power are stored in the first capacitor 215 and the second capacitor 216, respectively.

According to an embodiment of the present invention, after the step (e), further comprising the steps of: the second pulse power triggers the switch 26, the switch 26 is turned on, and the first pulse power and the second pulse power stored in the first capacitor 215 and the second capacitor 216 are superimposed and then supplied to the single chip microcomputer 24 and the radio frequency circuit unit 25 at the same time.

According to an embodiment of the present invention, before the step (a), the method further comprises the steps of: the state of the piezoelectric ceramic 10 is changed in a center-driven manner.

According to an embodiment of the present invention, before the step (a), the method further comprises the steps of: the state of the piezoelectric ceramic 10 is changed in a one-sided driving manner.

According to another aspect of the present invention, the present invention further provides a signal generating method of a piezoelectric transmitting device 100 using two pulse driving, the signal generating method comprising the steps of:

(a) in the process of one continuous action of pressing and resetting, a piezoelectric ceramic 10 generates a first pulse electric energy and a second pulse electric energy which are short-lived;

(b) turning on a switch 26C by the second pulse power to supply power to a radio frequency circuit unit 25C; and

(c) immediately using the first pulse power and the second pulse power, the radio frequency circuit unit 25C wirelessly transmits at least 2 bytes of data to the terminal according to a preset program of the single chip microcomputer 24C.

According to an embodiment of the present invention, in the step (C), the first pulse power and the second pulse power are supplied to the single chip microcomputer 24C and the radio frequency circuit unit 25C after being combined.

According to an embodiment of the present invention, after the step (a), further comprising the steps of: the first pulse power generated by the deformation of the piezoelectric ceramic 10 and the second pulse power generated by the reset of the piezoelectric ceramic 10 are sequentially stored in a first capacitor.

According to an embodiment of the present invention, the method further comprises the step of: the state of the piezoelectric ceramic 10 is changed in a center-driven manner.

According to an embodiment of the present invention, the method further comprises the step of: the state of the piezoelectric ceramic 10 is changed in a one-sided driving manner.

(a) pre-pushing the piezoelectric ceramic 10 towards a preset direction;

(b) when the piezoelectric ceramic 10 is subjected to an acting force in the opposite direction, the piezoelectric ceramic 10 deforms and generates a first pulse electric energy, after the acting force is cancelled, the pre-pushing piece 33 pushes the piezoelectric ceramic 10 to recover the initial position, and the piezoelectric ceramic 10 generates a second pulse electric energy; and

(c) the signal generating circuit unit 20 generates a radio frequency signal under the supply of the first pulse power and/or the second pulse power.

Specifically, in the step (b), the stroke H of the movement of the piezoelectric ceramic 10 is less than 4 mm. Further, in the step (b), the angle α of the movement of the piezoelectric ceramic 10 is less than 30 degrees.

(a) the piezoelectric ceramics 10 perform a cycle operation in opposite directions, and sequentially generate a first pulse electric energy and a second pulse electric energy;

(b) at least one pulse of electric energy charges the first capacitor 215 to store energy, and when the voltage of the first capacitor 215 rises to at least 2V, the radio frequency circuit unit 25 is discharged; and

(c) the rf circuit unit 25 generates an rf signal.

Specifically, the piezoelectric ceramics 10 are operated in one cycle in opposite directions to each other, wherein the amplitude of the movement of the piezoelectric ceramics is operated to be less than 4 mm.

Preferably, the radio frequency circuit unit 25 transmits a minimum of 2 bytes of data.

Preferably, the wireless communication rate of the radio frequency circuit unit 25 is set between 100kbps and 250 kbps.

Preferably, the radio frequency circuit unit maintains a transmission time of 100us at minimum.

Preferably, the voltage amplitude of the first pulse electric energy and the second pulse electric energy is larger than 10V.

Referring to fig. 19, another preferred embodiment of the piezoelectric signaling device 100D driven by two pulses according to the present invention will be explained in the following description, wherein the piezoelectric signaling device 100D driven by two pulses comprises a plurality of piezoelectric ceramics 10D capable of being operated cyclically, a signal isolator 20D, a plurality of operation identifiers 30D, a single chip microcomputer 40D, and a radio frequency circuit unit 50D, wherein the signal isolator 20D is electrically connected to the piezoelectric ceramics 10D and the single chip microcomputer 40D, the operation identifier 30D is electrically connected to the piezoelectric ceramics 10D and the single chip microcomputer 40D, and the radio frequency circuit unit 50D is electrically connected to the single chip microcomputer 40D. Specifically, at least one piezoelectric ceramic 10D capable of being operated cyclically is disposed on each channel, and the piezoelectric ceramics 10D defining different channels are a first piezoelectric ceramic 10D, a second piezoelectric ceramic 10D … …, and an nth piezoelectric ceramic 10D in sequence. Correspondingly, the operation identifier 30D respectively connected to the first piezoelectric ceramic 10D, the second piezoelectric ceramic 10D … … and the nth piezoelectric ceramic 10D is respectively a first operation identifier 30D, a second operation identifier 30D … … and an nth operation identifier 30D.

Further, the signal isolator 20D is disposed between the piezoelectric ceramic 10D and the single chip microcomputer 40D, and the signal isolator 20D plays a role of signal isolation or rectification to reduce mutual interference of the piezoelectric ceramics 10D when being operated. Preferably, the signal isolator 20D may be formed of one or more diodes. Preferably, a plurality of the piezoelectric ceramics 10D are allowed to be operated simultaneously or individually.

Further, the operation identifier 30D may be implemented by a semiconductor or a mechanical device to provide an appropriate detection level for the I/O port of the single chip microcomputer 40D. For example, when the first piezoelectric ceramic 10D is operated cyclically once to generate power, the operation is divided into two parts, firstly, the operation makes the first piezoelectric ceramic 10D generate electric energy, and the electric energy supplies power to the single chip microcomputer 40D and the radio frequency circuit unit 50D through the signal isolator 20D; secondly, the operation action generates action information to inform the single chip microcomputer 50D which path of the piezoelectric ceramics 10D is being operated, so that the single chip microcomputer 40D generates a corresponding code, and the radio frequency circuit unit 50D sends corresponding data according to the code generated by the single chip microcomputer 40D.

Preferably, in the process of generating power by cyclically operating the piezoelectric ceramic 10D, energy is separated to generate working energy and identification energy, the working energy is supplied to the single chip microcomputer 40D and the radio frequency circuit unit 50D to work, and the identification energy is transmitted to the single chip microcomputer 40D for identification after passing through the operation identifier 30D. Therefore, when any operation occurs, the single chip microcomputer 40D can generate a corresponding code according to the current operation and transmit the code to the radio frequency circuit unit 50D to transmit a signal. It should be noted that the specific method of operation recognition is merely illustrative and should not be construed as limiting the scope and content of the piezoelectric signaling device 100D of the present invention utilizing two pulse driving operations.

Preferably, the operation identifier 30D is a mechanical switch, such as a detection switch; when the piezoelectric ceramic 10D is pressed, a detection switch is pressed to generate a detection operation.

According to another aspect of the present invention, there is provided the method of signal generation using the piezoelectric transmitter device 100D driven by two pulses, wherein the method of signal generation includes the steps of:

(A) allowing a power generating operation of one cycle operation to be performed on a plurality of the piezoelectric ceramics 10D;

(B) separating energy generated in the piezoelectric ceramic 10D power generation process into working energy and identification energy;

(C) the working energy is transmitted to the single chip microcomputer 40D and the radio frequency circuit unit 50D, and meanwhile, the identification energy is transmitted to the single chip microcomputer 40D; and

(D) and the radio frequency single-path unit 50D transmits corresponding data according to the codes generated by the singlechip 40D.

Optionally, in the step (a), the method comprises the steps of: a plurality of the piezoelectric ceramics 10D are operated to generate energy simultaneously. Optionally, in the step (a), the method comprises the steps of: the plurality of piezoelectric ceramics 10D are respectively operated to generate energy.

Optionally, in the step (a), the piezoelectric ceramic 10D generates two times of pulse electric energy, and the pulse electric energy generated by at least one of the two times of operation is used to provide working energy for the single chip microcomputer 40D and the radio frequency circuit unit 50D.

Optionally, in the step (a), the piezoelectric ceramic 10D generates two times of pulse electric energy, the identification energy is separated by using the pulse electric energy generated by at least one time of operation, and the rest of the energy provides working energy for the single chip microcomputer 40D and the radio frequency circuit unit 50D.

(i) the operation identifier 30D identifies an operation action while the piezoelectric ceramic 10D performs one cycle operation power generation;

(ii) transmitting the energy generated by the piezoelectric ceramic 10D to the single chip microcomputer 40D and the radio frequency circuit unit 50D;

(iii) the single chip microcomputer 40D generates a corresponding control code according to the recognition result of the operation recognizer 30D; and

(iv) the radio frequency circuit unit 50D transmits corresponding data according to the code generated by the single chip microcomputer 40D.

Specifically, in the step (i), the power generating operation is allowed to be performed for one cycle operation on a plurality of the piezoelectric ceramics 10D. Alternatively, a plurality of the piezoelectric ceramics 10D are operated to generate energy at the same time. Alternatively, a plurality of the piezoelectric ceramics 10D are respectively operated to generate energy.

Referring to fig. 20, another preferred embodiment of the piezoelectric signaling device 100E driven by two pulses according to the present invention will be described in the following description, wherein the piezoelectric signaling device 100E driven by two pulses comprises a piezoelectric ceramic 10E capable of being operated cyclically, a signal isolator 20E, a plurality of operation identifiers 30E, a single chip microcomputer 40E, and a radio frequency circuit unit 50E, wherein the signal isolator 20E is electrically connected to the operation identifiers 30E and the single chip microcomputer 40E, a plurality of the operation identifiers 30E are electrically connected to the piezoelectric ceramic 10E, and the operation identifiers 30E are connected in parallel, and the radio frequency circuit unit 50E is electrically connected to the single chip microcomputer 40E. The operation identifiers 30E are defined as a first operation identifier 30E, a second operation identifier 30E … …, and an nth operation identifier 30E in this order. The circuits connected behind each operation identifier 30E may be collectively referred to as a load, including but not limited to the signal isolator 20E, the single chip microcomputer 40E, and the radio frequency circuit unit 50E.

Initially, each operation identifier 30E is in a state of being turned off in advance, and when the piezoelectric ceramic 10E is cyclically operated once, one of the operation identifiers 30E is turned on in advance by an operation action, and at the same time, the piezoelectric ceramic 10E generates electric energy by the operation action; after the electric energy passes through the conducted operation identifier 30E, a part of the energy supplies power to the signal isolator 20E for rectification so as to supply power to the single chip microcomputer 40E and the radio frequency circuit unit 50E; the other part of the energy is directly or indirectly transmitted to the I/O port of the single chip microcomputer 40E, so that the single chip microcomputer 40E generates a code corresponding to the operation identifier 30E which has been turned on, and the radio frequency circuit unit 50D transmits corresponding data according to the code generated by the single chip microcomputer 40D.

Specifically, in a normal state, the operation identifier 30E is in an off state, and a circuit between the piezoelectric ceramic 10E and the signal isolator 20E is in a high resistance state; circularly operating the piezoelectric ceramic 10E to generate power, and conducting the operation identifier 30E in advance before operating the piezoelectric ceramic 10E to generate power, so that the power generated by the piezoelectric ceramic 10E is supplied to the load through the operation identifier 30E; meanwhile, the electric energy passing through the operation identifier 30E is also directly or indirectly transmitted to the single chip microcomputer 40E, so that the single chip microcomputer 40E generates a control code corresponding to the operation identifier 30E and transmits the control code by the radio frequency circuit unit 50E.

According to another aspect of the present invention, the present invention further provides the signal generating method using the piezoelectric signaling device 100DE driven by two pulses, wherein the signal generating method includes the following steps:

(I) turning on the operation identifier 30E in advance;

(II) the electric energy generated by the piezoelectric ceramics 10E supplies power to the singlechip 40E and the radio frequency single-path unit 50E through the operation identifier 30E;

(III) the one-chip microcomputer 40E generates a control code corresponding to the operation identifier 30E; and

(IV) the radio frequency circuit unit 50E transmits corresponding data according to the code generated by the single chip microcomputer 40E.

It will be appreciated by persons skilled in the art that the above embodiments are only examples, wherein features of different embodiments may be combined with each other to obtain embodiments which are easily imaginable in accordance with the disclosure of the invention, but which are not explicitly indicated in the drawings.

It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.

Claims

1. A piezoelectric signaling device utilizing two pulse drives, comprising:

2. The piezoelectric signaling device with double pulse driving according to claim 1, wherein a wireless communication rate of said radio frequency circuit unit is set between 100kbps and 250 kbps.

3. The piezoelectric signaling device driven by two pulses according to claim 1, wherein said radio frequency circuit unit has an operating frequency of 100MHZ-5 GHZ.

4. A piezoelectric signaling device utilizing two pulse drives, comprising:

a signal generating circuit unit, wherein the signal generating circuit unit comprises an energy storage circuit unit, a single chip microcomputer and a radio frequency circuit unit, wherein the energy storage circuit unit is electrically connected to the piezoelectric ceramic, the energy storage circuit unit temporarily stores the first pulse electric energy generated due to deformation or the second pulse electric energy generated due to reset, the single chip microcomputer is electrically connected to the energy storage circuit unit and the radio frequency circuit unit, when the first pulse electric energy or the second pulse electric energy stored in the energy storage circuit unit is supplied to the single chip microcomputer and the radio frequency circuit unit, the single chip microcomputer controls the radio frequency circuit unit to generate a radio frequency signal, wherein in the process of one cycle operation, the signal generating circuit unit transmits 2 bytes of data at least, and the signal generating circuit unit maintains the transmitting time of 100us at least, the longest transmission time is not more than 10ms, wherein the wireless communication rate of the signal generation circuit unit is set between 100kbps and 1Mbps, and wherein the transmission power of the signal generation circuit unit is less than 10 milliwatts.

5. The piezoelectric signaling device according to claim 4, wherein said signal generating circuit unit further comprises a switch, wherein said switch is disposed between said tank circuit unit and said RF circuit, and when said switch is triggered to conduct, said tank circuit unit supplies power to said RF circuit.

6. The piezoelectric signaling device with two-pulse drive according to claim 5, wherein said switch is selected from the group consisting of: the type group consisting of a triode, an MCU, an analog switch and a mechanical switch.