WO2019227600A1

WO2019227600A1 - Wireless switch and doorbell

Info

Publication number: WO2019227600A1
Application number: PCT/CN2018/094854
Authority: WO
Inventors: 张云翼; 华建武
Original assignee: 深圳市浩博高科技有限公司
Priority date: 2018-05-28
Filing date: 2018-07-06
Publication date: 2019-12-05
Also published as: CN208314945U

Abstract

A wireless switch and a doorbell comprising the wireless switch are provided. The wireless switch comprises a pressing force power generator, an energy collection module, and a wireless transmission module, wherein the pressing force power generator receives pressing force generated when the wireless switch is pressed so as to generate power, the pressing force power generator is connected to an input end of the energy collection module, and an output end of the energy collection module is connected to an input end of the wireless transmission module, and the wireless transmission module is for transmitting a wireless switching signal. The wireless switch is provided with the pressing force power generator to generate electric charge, effectively accumulates the electric charge by means of the energy collection module, and sends the signal wirelessly through the wireless transmission module, without batteries, thus overcoming the problem of high cost caused by frequent replacement of the batteries of conventional wireless switches, and the doorbell using the wireless switch overcomes the problem of wiring inconvenience of conventional doorbells. With a simple structure and low cost, the wireless switch can be widely used in the field of wireless control devices.

Description

Wireless switch and doorbell Ranch

Technical field

The invention relates to the field of wireless control devices, and in particular, to a wireless switch and a doorbell.

Background technique

Existing wireless switches require battery power. Frequent replacement of the battery causes an increase in the cost of use. At the same time, if the battery cannot be effectively recycled, it will easily cause environmental pollution, because it is necessary to invent a switch to solve the above problems.

Summary of the Invention

In order to solve the above technical problems, an object of the present invention is to provide a wireless switch that does not require battery power.

The technical scheme adopted by the present invention is:

A wireless switch includes a pressure power generating device, an energy harvesting module, and a wireless transmitting module. The pressure power generating device receives the pressure when the wireless switch is pressed and is used for power generation. The pressure power generating device is connected to an input end of an energy harvesting module. An output end of the energy harvesting module is connected to an input end of the wireless transmitting module, and the wireless transmitting module is configured to transmit a wireless switching signal.

Preferably, the pressure power generation device includes a back cover, a piezoelectric ceramic sheet, and a metal plate. A deformable cavity is formed between the metal plate and the back cover, and the piezoelectric ceramic sheet is fixedly disposed on the surface of the metal plate and follows The metal plate is deformed, the piezoelectric ceramic sheet is located in the cavity, and the piezoelectric ceramic sheet is connected to the input end of the energy harvesting module.

Preferably, the pressure power generation device further includes a first limiting portion for limiting deformation of the piezoelectric ceramic sheet, and the first limiting portion is disposed on the back cover and located in the cavity.

Preferably, the pressure power generating device includes a substrate, a movable key panel, a piezoelectric ceramic sheet, and a protrusion. One end of the substrate is movably connected to one end of the movable key panel and forms a one-arm structure. One end of the electric ceramic sheet is fixedly connected to form another one-arm structure. The other end of the piezoelectric ceramic sheet is located between the other end of the substrate and the other end of the movable key panel, and the protrusion is provided at the other end of the movable key panel. At one end, when the protrusion approaches the other end of the substrate, the other end of the piezoelectric ceramic sheet is pressed to deform it.

Preferably, the pressure power generating device includes a substrate, a movable key panel, a piezoelectric ceramic sheet, and a second limiting portion. One end of the substrate is movably connected to one end of the movable key panel and forms a single-arm structure. The ceramic sheet is fixedly connected to the substrate or the movable key panel. The piezoelectric ceramic sheet is located between the substrate and the movable key panel. The second limiting portion is disposed at the other end of the substrate and / or the other end of the movable key panel. When the other end of the movable key panel approaches the other end of the substrate, the second limiting portion presses the piezoelectric ceramic sheet to deform it.

Preferably, the energy harvesting module includes a rectification unit, an energy storage unit, and a voltage monitoring unit. An input end of the rectification unit is connected to the pressure generating device, and an output end of the rectification unit is connected to the energy storage unit. The input end of the energy storage unit is connected to the input end of the voltage monitoring unit, and the output end of the voltage monitoring unit is connected to the input end of the wireless transmitting module.

Preferably, the wireless transmitting module includes a transmitting unit and an encoding unit, and an output end of the energy harvesting module is connected to an input end of the encoding unit and an input end of the transmitting unit, respectively, and an output end of the encoding unit is connected to the input unit. The input of the transmitting unit is connected.

The invention also proposes a wireless doorbell, which is characterized by comprising a doorbell module and a wireless switch module. The doorbell module includes a wireless receiving unit, a data decoding unit, a power unit, a main control unit and a speaker. The output of the power unit The terminals are respectively connected to the input of the wireless receiving unit, the input of the data decoding unit and the input of the main control unit. The input of the wireless receiving unit is connected to the output of the wireless transmitting module. The output end is connected to the input end of the data decoding unit, the output end of the data decoding unit is connected to the input end of the main control unit, and the output end of the main control unit is connected to the input end of the speaker. Ranch

The beneficial effect of the present invention is that the invention sets up a pressure generating device to generate electric charge, and effectively accumulates the electric charge through an energy acquisition module, and transmits the signal in a wireless manner through a wireless transmitting module without using a battery, which overcomes the need for the traditional wireless switch to frequently The high cost problem caused by battery replacement, and the present invention proposes a doorbell using a wireless switch to overcome the inconvenience of traditional doorbell wiring. The present invention has a simple structure and low cost, and can be widely used in the field of wireless control devices.

BRIEF DESCRIPTION OF THE DRAWINGS

The specific embodiments of the present invention are further described below with reference to the drawings:

FIG. 1 is a schematic structural view of a specific embodiment of a wireless switch according to the present invention;

2 is a schematic structural diagram of a first specific embodiment of a pressure-generating device of a wireless switch according to the present invention;

3 is a schematic structural diagram of a second specific embodiment of a pressure-generating device of a wireless switch according to the present invention;

4 is a schematic structural diagram of a third specific embodiment of a pressure generating device of a wireless switch according to the present invention;

5 is a schematic structural diagram of a fourth specific embodiment of a pressure-generating device of a wireless switch according to the present invention;

6 is a circuit diagram of a specific embodiment of an energy harvesting module and a wireless transmitting module of a wireless switch according to the present invention;

7 is a circuit diagram of another specific embodiment of an energy harvesting module and a wireless transmitting module of a wireless switch according to the present invention;

FIG. 8 is a structural function diagram of a doorbell according to the present invention.

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

As shown in FIG. 1, a wireless switch includes a pressure generating device, an energy harvesting module, and a wireless transmitting module. The pressure generating device receives the pressure when the wireless switch is pressed and generates power. The pressure generating device and An input end of the energy harvesting module is connected, an output end of the energy harvesting module is connected to an input end of the wireless transmitting module, and the wireless transmitting module is used to transmit a wireless switching signal.

As shown in FIG. 2, in the first embodiment, the pressure generating device includes a back cover 1, a piezoelectric ceramic sheet 2, and a metal plate 3. A deformable cavity is formed between the metal plate 3 and the back cover 1. The piezoelectric ceramic sheet 2 is fixed on the surface of the metal plate 3 and deforms following the metal plate 3. The piezoelectric ceramic sheet 2 is located in the cavity, and the piezoelectric ceramic sheet and the input end of the energy harvesting module connection. When the housing is pressed, the metal plate 3 is deformed, and the contact area with the piezoelectric ceramic sheet is increased to generate a current.

The pressure generating device further includes a first limiting portion 4 for limiting deformation of the piezoelectric ceramic sheet. The first limiting portion is disposed on the back cover and is located in the cavity. The limiting portion may be Silicone or elastic pan pieces.

As shown in FIG. 3, in the second embodiment, the pressure generating device includes a substrate 1, a movable key panel 2, a piezoelectric ceramic sheet 3, and a protrusion 4. One end of the substrate 1 is movable with one end of the movable key panel 2. The one end of the substrate 1 is connected to one end of the piezoelectric ceramic sheet 3 to form another one arm structure. The other end of the piezoelectric ceramic sheet 3 is located at the other end of the substrate 1 and is movable. Between the other end of the key panel 2, the protrusion 4 is disposed on the other end of the movable key panel 2. When the movable key panel is pressed, when the protrusion 4 approaches the other end of the substrate, the piezoelectric ceramic sheet is pressed The other end of it deforms it.

As shown in FIG. 4, in a third embodiment, the pressure generating device includes a substrate 1, a movable key panel 2, a piezoelectric ceramic sheet 3, and a second limiting portion 4, and one end of the substrate 1 and the movable key One end of the panel 2 is movably connected to form a single-arm structure, the piezoelectric ceramic sheet 3 is fixedly connected to the substrate 1, the piezoelectric ceramic sheet is located between the substrate and the movable key panel, and the second limiting portion is disposed at When the other end of the substrate and the other end of the movable key panel approach the other end of the substrate, the second limiting portion presses the piezoelectric ceramic sheet to deform it.

As shown in FIG. 5, in the third embodiment, the piezoelectric ceramic sheet may also be fixedly connected to the substrate, and the second limiting portion 4 may also be provided at the other end of the movable key panel 5 as a fourth pressure generating device. Embodiments.

The energy harvesting module includes a rectification unit 31, an energy storage unit 32, and a voltage monitoring unit 33. An input end of the rectification unit 31 is connected to the pressure generating device, and an output end of the rectification unit 31 is connected to the storage unit. The input terminal of the energy storage unit is connected, the output terminal of the energy storage unit 32 is connected to the input terminal of the voltage monitoring unit 33, and the output terminal of the voltage monitoring unit 33 is connected to the input terminal of the wireless transmitting module.

Specifically, PZT1 and PZT2 are the output ends of the piezoelectric ceramic plate. The rectifier unit 31 includes a rectifier bridge composed of diodes D1, D2, D3, and D4. The energy storage unit 32 includes a first capacitor C1 and a second capacitor C2. Capacitor C1 and second capacitor C2 are connected in parallel to the output of the rectifier bridge. The voltage monitoring unit includes a comparator U3. The comparator can be a ME6214 linear regulator. The input of comparator U3 is connected to the output of the energy storage unit. The output of the U3 is used as the output of the energy storage module.

The current generated by the piezoelectric ceramic sheet is stored in the first capacitor C1 and the second capacitor C2 after being rectified by the rectifier bridge. When the voltage across the capacitor is greater than a specified value, the comparator U3 outputs a voltage to the wireless transmitting module.

The wireless transmitting module includes a transmitting unit 42 and an encoding unit 41. The energy storage module supplies power to the transmitting unit 42 and the encoding unit 41, respectively. The encoding unit encodes switch information into a message and sends the message to the transmitting unit. The transmitting unit sends the message wirelessly.

The coding unit includes a coding chip U4, the power input port VIN of the coding chip U4 is connected to the VIN port of the comparator U3, the third capacitor C3 is connected between the power output port VOUT of the comparator U3 and the ground node, and the ground node GND of the coding chip U4 Ground.

As shown in FIG. 6, the transmitting unit includes a wireless transmitting chip U1 with a model number of CMT2119. The encoding unit U4 encodes the switch message into a message and outputs the data receiving port DATA of the wireless transmitting chip U1 through the DATA port. The VDD port of the wireless transmitting chip U1 is compared. The VOUT port of the transmitter U3, the fourth capacitor C4 is connected between the VDD port of the wireless transmitting chip U1 and the ground node to filter out the AC current. The XTAL port of the wireless transmitting chip U1 is connected to the 26M crystal Y1 and grounded. The CLK port of the wireless transmitting chip U1 is connected to the clock signal U. CLK, the first inductor is connected between the VDD port and the RFO port of the wireless transmitting chip U1, one end of the fifth capacitor C5 is connected to the RFO port of the wireless transmitting chip U1, and the other end of the fifth capacitor C5 is connected to one end of the second inductor L2 Connected, the other end of the second inductor L2 is connected to one end of the third inductor L3, the other end of the third inductor L3 is connected to the antenna ANT, one end of the sixth capacitor is connected to an intermediate node between the second inductor L2 and the third inductor L3, and the sixth capacitor The other end of C6 is grounded. The seventh capacitor C7 is connected to the intermediate node between the third inductor and the antenna ANT, and the other end of the seventh capacitor is grounded.

The first capacitor C1 can take a value of 2.2uF, the second capacitor C2 can take a value of 1uF, and the third capacitor C3 can take a value of 470nF, The fourth capacitor C4 can take 0.1uF, the fifth capacitor C5 can take 68pF, the sixth capacitor C6 and the seventh capacitor C7 can take 15pF, the first inductor L1 can take 180nH, and the second inductor L2 can take 36nH, the third inductance L3 can take the value of 18nH.

When the voltage across the energy storage unit is greater than the threshold, the voltage monitoring unit starts the wireless transmitting chip U1 to send the data encoded by the encoding unit to the receiving end wirelessly.

As shown in FIG. 7, in order to achieve a better implementation effect, the encoding unit and the voltage monitoring unit may also use an MCU chip. The first pin of the MCU chip is connected to the third pin of the comparator U3, and the second pin is grounded. The third pin is connected to the VOUT port of the comparator U3. A 31st capacitor C31 is also included between the third pin and the ground node to store energy; the fourth pin outputs data to the DATA port of the wireless transmitting chip U1 The data is a switch message. The fifth pin is connected to one end of the fifty-first capacitor C51, and the other end of the fifty-first capacitor C51 is grounded. The seventh pin is a voltage output port and is connected to the wireless transmitting chip U1. For the VDD port, the sixth pin is connected to one end of the switch S2, the other end of the switch S2 is grounded, the eighth pin is connected to one end of the switch S1, and the other end of the switch S1 is grounded.

When the output voltage of the energy harvesting module is high, the MCU starts from hibernation. The MCU controls the thirty-first capacitor C31 and the fifty-first capacitor C51 to be charged. The charging energy is the power stored in the first capacitor C1 and the second capacitor C2. Therefore, during charging, the voltage across the first capacitor C1 and the second capacitor C2 decreases, and the output of the comparator U3 is low. When the output of the comparator U3 outputs a high level, the thirty-first capacitor C31 and the fifty A capacitor C51 is charged, and the MCU turns off the charging of the thirty-first capacitor C31 and the fifty-first capacitor C51. In the working state, the output voltage of the comparator U3 powers the wireless transmitting chip U1, transmits data to the receiving end, and transmits data During the process, due to power consumption, the output voltage across the first capacitor C1 and the second capacitor C2 dropped rapidly. When the voltage dropped to affect the transmission output of the wireless transmitting chip U1, the MCU will change the 31st capacitor C31 and the 51st capacitor. The power stored in the capacitor C51 is output to the wireless transmitting chip U1, which keeps the power supply voltage stable during power consumption.

The receiving unit receives the signal sent by the wireless transmitting module, and is decoded and processed by the data unit.

The present invention also provides a doorbell, as shown in FIG. 8, including a doorbell module and the wireless switch described above. The doorbell module includes a wireless receiving unit, a data decoding unit, a power unit, a main control unit, and a speaker. The power unit The output end of the wireless receiving unit is connected to the input end of the wireless receiving unit, the input end of the data decoding unit and the input end of the main control unit, the input end of the wireless receiving unit is connected to the output end of the wireless transmitting module, and the wireless receiving unit The output of the unit is connected to the input of the data decoding unit, the output of the data decoding unit is connected to the input of the main control unit, and the output of the main control unit is connected to the input of the speaker. The wireless switch module sends a switch signal to the doorbell to drive the doorbell.

The invention uses the piezoelectric material of the energy harvesting module to generate electric charge, and effectively accumulates the electric charge through the energy storage module. The signal is transmitted wirelessly through the wireless transmitting module, without using a battery, which overcomes the traditional switch that requires frequent battery replacement. High cost problem. The invention also proposes a doorbell, which adopts a wireless switch without wiring, and has the characteristics of flexible installation.

The above is a detailed description of the preferred implementation of the present invention, but the present invention is not limited to the described embodiments. Those skilled in the art can make various equivalent deformations or replacements without departing from the spirit of the present invention. These equivalent modifications or replacements are all included in the scope defined by the claims of this application.

Claims

A wireless switch is characterized in that it includes a pressure generating device, an energy harvesting module, and a wireless transmitting module. The pressure generating device receives the pressure when the wireless switch is pressed and is used for power generation. The pressure generating device and an input end of the energy harvesting module Connected, the output end of the energy harvesting module is connected to the input end of the wireless transmitting module, and the wireless transmitting module is configured to transmit a wireless switching signal.
The wireless switch according to claim 1, wherein the pressure generating device comprises a back cover, a piezoelectric ceramic sheet, and a metal plate, and a deformable cavity is formed between the metal plate and the back cover, and The piezoelectric ceramic sheet is fixed on the surface of the metal plate and deforms following the metal plate. The piezoelectric ceramic sheet is located in the deformation cavity, and the piezoelectric ceramic sheet is connected to the input end of the energy harvesting module. Ranch
The wireless switch according to claim 2, wherein the pressure power generation device further comprises a first limiting portion for limiting deformation of the piezoelectric ceramic sheet, and the first limiting portion is disposed at The back cover is located in the deformation cavity. Ranch
The wireless switch according to claim 1, wherein the pressure power generating device comprises a substrate, a movable key panel, a piezoelectric ceramic sheet, and a protrusion, and one end of the substrate is movably connected to one end of the movable key panel and A single-arm structure is formed. One end of the substrate is fixedly connected to one end of the piezoelectric ceramic sheet and forms another one-arm structure. The other end of the piezoelectric ceramic sheet is located between the other end of the substrate and the other end of the movable key panel. Meanwhile, the protrusion is provided at the other end of the movable key panel, and when the protrusion approaches the other end of the substrate, the other end of the piezoelectric ceramic sheet is pressed to deform it. Ranch
The wireless switch according to claim 1, wherein the pressure power generating device comprises a substrate, a movable key panel, a piezoelectric ceramic sheet, and a second limiting portion, one end of the substrate and one end of the movable key panel The one-arm structure is movably connected, and the piezoelectric ceramic sheet is fixedly connected to the substrate or the movable key panel. The piezoelectric ceramic sheet is located between the substrate and the movable key panel. The second limiting portion is provided on the substrate. When the other end and / or the other end of the movable key panel are approached to the other end of the substrate, the second limiting portion presses the piezoelectric ceramic sheet to deform it. Ranch
The wireless switch according to any one of claims 1 to 5, wherein the energy harvesting module comprises a rectification unit, an energy storage unit, and a voltage monitoring unit, and an input terminal of the rectification unit is connected to the The pressure generating device is connected, the output of the rectification unit is connected to the input of the energy storage unit, the output of the energy storage unit is connected to the input of the voltage monitoring unit, and the output of the voltage monitoring unit Connected to the input end of the wireless transmitting module. Ranch
The wireless switch according to any one of claims 1 to 5, wherein the wireless transmitting module includes a transmitting unit and an encoding unit, and an output end of the energy harvesting module is respectively connected to an input end of the encoding unit. The input terminal of the transmitting unit is connected, and the output terminal of the encoding unit is connected to the input terminal of the transmitting unit. Ranch
A wireless doorbell, characterized by comprising a doorbell module and a wireless switch according to any one of claims 1 to 7, the doorbell module comprising a wireless receiving unit, a data decoding unit, a power unit, a main control unit and a speaker The output end of the power supply unit is connected to the input end of the wireless receiving unit, the input end of the data decoding unit and the input end of the main control unit, and the input end of the wireless receiving unit is connected to the output end of the wireless transmitting module The output of the wireless receiving unit is connected to the input of the data decoding unit, the output of the data decoding unit is connected to the input of the main control unit, and the output of the main control unit is connected to the speaker Input. Ranch