CN212463190U - Low-power consumption touch device - Google Patents

Abstract

The application discloses low-power consumption touch device, including the PCB board, the PCB board includes interconnect's detection circuitry portion, button portion and sensor portion, detection circuitry portion is including the detection circuitry of integrated in touch chip, button portion is cotton including the naked metal sheet and the electrically conductive bubble of integrated on PCB, the metal sheet respectively with the circuit of detection circuitry portion links to each other, so that detection circuitry can measure the capacitance value of condenser, and according to the capacitance value obtains corresponding touch button. The PCB comprises a detection circuit part, a key part and a sensor part which are connected with each other, a capacitor is formed between an exposed metal plate of the key part and a parallel ground plane, the touch distance can be effectively increased through conductive foam, and an effective touch key value can be still obtained when the equipment is in a hollow position.

Description

Low-power consumption touch device

Technical Field

The application relates to the technical field of detection, in particular to a low-power-consumption touch device.

Background

With the increasing quality of life of people, the acquisition of data becomes a new demand of daily life, such as various parameters of soil, current temperature and humidity, night light brightness and air quality. The existing display device has the problems of low working efficiency, high energy consumption, high cost, poor touch effect, high radiation, low electric energy utilization rate, short service life and low intelligent degree.

Patent document CN208901736U discloses a display touch device and a refrigerator, which includes a display cover, a functional PCB and an LED lamp, wherein a capacitive touch circuit is disposed on the functional PCB, the LED lamp is welded on the back of the functional PCB, and a PCB light hole is disposed in a welding area of the LED lamp, so that LED light passes through the PCB light hole from the back of the functional PCB and is transmitted to the front of the functional PCB; the functional PCB board is arranged closely attached to the inner side of the display cover, so that the LED light can be projected out of the display cover, and the display function is realized; the display cover is provided with a function touch indication in the area corresponding to the capacitive touch circuit, so that a touch function is realized, and the use of a conductive spring or conductive foam is omitted, but the display touch device is not suitable for long-term use outdoors at night.

SUMMERY OF THE UTILITY MODEL

The main purpose of this application is to provide low-power consumption touch device, through button cell's work for a longer time, more effective work.

In order to achieve the above object, the present application provides a low power consumption touch device, including the PCB board, the PCB board includes interconnect's detection circuitry portion, button portion and sensor portion, detection circuitry portion is including the detection circuitry of integrated in the touch chip, button portion is including the naked metal sheet of integrated on the PCB, the metal sheet with detection circuitry connects, sensor portion is including the sensor of measuring the soil parameter, so that detection circuitry can measure the capacitance value of condenser, and basis the capacitance value obtains corresponding touch button.

Preferably, the detection circuit comprises a resistor and a signal acquisition processing element, and the resistor is respectively connected with the signal acquisition processing element and the metal plate.

Preferably, the portable electronic device further comprises a shell, one end of the shell is closed, the other end of the shell is provided with an installation notch, the detection circuit part is accommodated inside the shell, the key part is also integrated inside the shell, and the sensor part extends out of the shell through the installation notch.

Preferably, a shell corresponding to the metal plate is provided with a touch area for hand touch, and the touch area is electrically connected with the signal acquisition processing element.

Preferably, the key further comprises a conductive foam which is positioned between the metal plate of the key part and the shell.

Preferably, the conductive foam is glued to the metal plate using 3M glue.

Preferably, the PCB board is an integrally formed structure. Can be conveniently produced and manufactured, and the integration degree of the device is improved.

Preferably, the conductive foam and the metal plate are one of square, rectangle, circle, ellipse and diamond.

Preferably, the button-type portable electronic device further comprises a button battery, wherein the button battery is connected with the detection circuit and is powered by the button battery. The standby time can be kept for one year by adopting one button cell.

Preferably, the housing is made of a plastic material.

The beneficial effect of this application is: the touch device with low power consumption can enable the devices to work for a longer time through the button battery and work more effectively, and when the devices are touched by hands outside, a capacitor parallel to the ground plane is connected in parallel with a capacitor of the touch key part. The touch distance can be effectively increased through the conductive foam, and an effective touch key value can be still obtained when the equipment is in a hollow position; by arranging the awakening module, various detected parameters can be conveniently displayed to a user in a flashing mode; the touch key is adopted, so that various measured parameters can be conveniently reflected through the flashing light, and the visual convenience of measurement is improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic diagram of an internal structure provided according to an embodiment of the present application;

FIG. 2 is a schematic diagram of an external structure provided according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a circuit provided by an embodiment of the present application;

FIG. 4 is a waveform diagram of a touch test provided by an embodiment of the present application.

1-a PCB board; 2-a metal plate; 3-a detection circuit section; 4-a sensor section; 7-a housing; 9-resistance; 10-a signal acquisition processing element; 11-touch area.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

As shown in fig. 1-2, the utility model provides a low-power consumption touch device, including PCB board 1, PCB board 1 includes interconnect's detection circuitry portion 3, button portion and sensor portion 4, detection circuitry portion 3 is including the detection circuitry of integrating in the touch chip, button portion is including the naked metal sheet 2 of integrating on PCB, metal sheet 2 with detection circuitry connects, sensor portion is including the sensor of measuring soil parameter, so that detection circuitry can measure the capacitance value of condenser, and according to the capacitance value obtains corresponding touch button.

As shown in fig. 3, in the present embodiment, the detection circuit includes a resistor 9 and a signal acquisition processing element 10, and the resistor 9 is connected to the signal acquisition processing element 10 and the metal plate 2, respectively. And forming a capacitor with the metal plate 2 as a polar plate and air as a filling medium, wherein two ends of the detection circuit are respectively connected with the metal plate 2 so as to measure the capacitance value of the capacitor and obtain a corresponding key value according to the capacitance value.

In this embodiment, in order to protect detection circuitry portion 3 to PCB board 1, still include casing 7, casing 7 one end is sealed, and the other end is equipped with the installation breach, detection circuitry portion holding is in inside the casing, button portion also integrates inside the casing, sensor portion passes through the installation breach stretches out the casing is outside. By arranging the detection circuit part 3 inside the shell 7, the detection circuit part can be effectively prevented from being damaged, the safety of the detection circuit part is ensured, the sensor part 4 extends out of the shell 7, and the pins can be used for conveniently detecting the outside.

As shown in fig. 4, fig. 4 is a test waveform after a touch. In this embodiment, a casing corresponding to the metal plate 2 is provided with a touch area 11 for touching by a hand, and the touch area 11 is electrically connected to the signal acquisition processing element 10. Through setting up awakening module, can conveniently show each item parameter of detection for the user through the form of flashing light. Through with low-power consumption touch device integration on the PCB board, can effectively promote the integration degree of device. The touch key is adopted, so that various measured parameters can be conveniently reflected through the flashing light, and the visual convenience of measurement is improved.

In this embodiment, the key further comprises a conductive foam, and the conductive foam is located between the metal plate of the key part and the shell. When the touch is made by hand, there will be a capacitor parallel to the ground plane and a capacitor parallel to the touch key part. And the touch distance can be effectively increased through the conductive foam, and an effective touch key value can be still obtained when the equipment is in a hollow position.

In this embodiment, the conductive foam is glued to the metal plate using 3M glue.

In this embodiment, the PCB board 1 is an integrally formed structure. Can be conveniently produced and manufactured, and the integration degree of the device is improved.

In the present embodiment, the conductive foam and the metal plate 2 are one of a square, a rectangle, a circle, an ellipse and a diamond.

In this embodiment, the button-type portable electronic device further comprises a button battery, wherein the button battery is connected with the detection circuit and is powered by the button battery. The power consumption of the equipment is low when the equipment is not awakened, so that the equipment can be powered by the button battery, and tests show that the equipment can be continuously standby for one year by using one button battery.

In this embodiment, the housing is made of plastic. Not only low cost, convenient manufacture make soil parameter measurement device in addition on the whole comparatively light, portable. The shape of the housing 7 can be designed to be any shape in principle, and in practical application, the shape of the housing 7 can be designed to match the shape of the detection circuit part 3 according to the shape of the detection circuit part 3, so that the detection circuit part 3 can be conveniently accommodated.

In another embodiment of the present disclosure, a pair of metal plates 2 are disposed parallel to each other, resulting in a flat capacitor, according to the formula:

the capacitance value C is easily calculated. Wherein S is a facing area between the metal plates 2, d is a distance between the metal plates 2, ε is a dielectric constant, π is a circumferential ratio, and k is an electrostatic constant.

The model of the touch circuit simulated by the human hand touch is adopted, the touch circuit has a certain parasitic capacitance CP, because the hand touches the touch area 11, a capacitance CF is formed between the human body and the ground, and accordingly, the total capacitance CS of the touch circuit is CP + CF, and a corresponding key value can be obtained by measuring the capacitance.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. The low-power-consumption touch device is characterized by comprising a PCB (printed circuit board), wherein the PCB comprises a detection circuit part, a key part and a sensor part which are connected with each other, the detection circuit part comprises a detection circuit integrated in a touch chip, the key part comprises a naked metal plate integrated on the PCB, the metal plate is connected with the detection circuit, and the sensor part comprises a sensor for measuring soil parameters.

2. The low power consumption touch device according to claim 1, wherein the detection circuit comprises a resistor and a signal acquisition processing element, and the resistor is connected to the signal acquisition processing element and the metal plate, respectively.

3. The low power consumption touch device according to claim 1, further comprising a housing, wherein one end of the housing is closed, the other end of the housing is provided with a mounting notch, the detection circuit part is accommodated inside the housing, the key part is also integrated inside the housing, and the sensor part extends out of the housing through the mounting notch.

4. The low power consumption touch device as claimed in claim 2, wherein a touch area for touching by hand is provided on the housing corresponding to the metal plate, and the touch area is electrically connected to the signal acquisition and processing element.

5. The low power consumption touch device according to claim 1, further comprising a conductive foam interposed between the metal plate of the key part and the case.

6. The low power consumption touch device of claim 5, wherein the conductive foam is glued to the metal plate using 3M glue.

7. The low power consumption touch device of claim 1, wherein the PCB board is of an integrally molded structure.

8. The low power touch device of claim 5, wherein the conductive foam, metal plate is one of square, rectangular, circular, oval, and diamond.

9. The low-power touch device of claim 2, further comprising a button cell, wherein the button cell is connected to the detection circuit.

10. The low power consumption touch device of claim 3, wherein the housing is made of plastic.

Images