CN210157168U - Sensor, mobile terminal, wearable equipment, household appliance and electronic cigarette - Google Patents
Sensor, mobile terminal, wearable equipment, household appliance and electronic cigarette Download PDFInfo
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- CN210157168U CN210157168U CN201920990062.XU CN201920990062U CN210157168U CN 210157168 U CN210157168 U CN 210157168U CN 201920990062 U CN201920990062 U CN 201920990062U CN 210157168 U CN210157168 U CN 210157168U
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Abstract
The utility model discloses a sensor, a mobile terminal, a wearable device, a household appliance and an electronic cigarette comprising the sensor, wherein the sensor comprises a first circuit board, at least one pressure-sensitive unit and at least two rigid conducting strips; at least two rigid conductive sheets are arranged on one side of the first circuit board, and the two adjacent rigid conductive sheets are arranged at intervals; the pressure-sensitive units are arranged on the other side of the first circuit board, and each pressure-sensitive unit is opposite to a gap formed between the adjacent rigid conducting strips; the rigid conducting strip and the pressure-sensitive unit are electrically connected with the first circuit board respectively. The utility model discloses in the middle of, utilize the rigidity conducting strip to detect pressure detection function and electric capacity touch detection function collection as an organic whole, under the condition that does not increase the regional area of sensing, realize pressure detection and electric capacity touch detection simultaneously, not only reduce the space that the sensor occupy, still reduced the cost.
Description
Technical Field
The utility model belongs to the technical field of the sensor, in particular to sensor and contain mobile terminal, wearable equipment, domestic appliance and the electron cigarette of this sensor.
Background
Along with the development of the manufacturing technology of the intelligent equipment, the touch technology is increasingly applied to the intelligent equipment, the pressure detection technology is increasingly applied to the intelligent mobile equipment, and the original mechanical keys in the intelligent equipment can be replaced by pressure induction keys.
The existing equipment with the pressure sensing key and the touch sensing key on the market is usually only to simply set the capacitive sensor and the pressure sensor on the equipment respectively and independently, so that the cost is high, the size is large, the occupied area of the equipment is large, and the wide popularization is not facilitated.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, an object of the present invention is to provide a sensor capable of simultaneously detecting pressure without increasing the volume.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
one aspect of the present invention provides a sensor, which comprises a first circuit board, at least one pressure-sensitive unit and at least two rigid conductive sheets; at least two rigid conductive sheets are arranged on the same side of the first circuit board, and the two adjacent rigid conductive sheets are arranged at intervals; the pressure-sensitive unit is arranged on the other side of the first circuit board, and the pressure-sensitive unit is opposite to a gap formed between the adjacent rigid conducting strips;
the rigid conducting sheet and the pressure-sensitive unit are electrically connected with the first circuit board.
A circuit is drawn on the first circuit board, and the rigid conducting strip and the pressure-sensitive unit are respectively connected with an external measuring chip through the circuit on the first circuit board. The rigid conducting strip is used as a capacitance polar plate after the sensor is formed, and when a finger of a user does not contact with the rigid conducting strip, a static capacitance is formed between the rigid conducting strip and the ground. When a finger of a user touches or approaches the surface of the sensor, the parasitic capacitance of the human body is coupled to the static capacitance, so that the static capacitance value of the rigid conducting strip to the ground is changed, and a change signal of the capacitance value is transmitted to the external measuring chip through the first circuit board, so that the external measuring chip can detect the touch operation of the user through signal processing and calculation. In addition, when the sensor is subjected to pressure, for example, when a user's finger presses the surface of the sensor, the pressure-sensitive resistor in the pressure-sensitive cell is deformed and the resistance value is changed, so that the voltage value of the pressure-sensitive cell is changed. The voltage value change of the pressure-sensitive unit is transmitted to an external measuring chip through the first circuit board, so that the external measuring chip can detect the pressure borne by the surface of the sensor through signal processing and calculation. Because the pressure-sensitive unit sets up in the position relative with the clearance of adjacent two rigidity conducting strips, the not flexible characteristic of usable rigidity conducting strip, will be touched the surface deformation accumulation to the clearance between two rigidity conducting strips on, increase the deformation of the piezo-resistor in the pressure-sensitive unit to reinforcing pressure-sensitive unit output voltage value variation, promote pressure detection's sensitivity.
Further, the first circuit board is a flexible printed circuit board or a PCB board.
Further, at least one of the piezo-elements comprises a piezo-resistor, which acts as a separate sensing element.
Further, at least one piezo-element is including two piezo-resistors, and two piezo-resistors connect and form the Wheatstone half-bridge, and the output and the first circuit board electricity of Wheatstone half-bridge are connected, improve the sensitivity of sensor, promote the wholeness ability of this sensor.
The sensor also comprises a second circuit board and at least one resistance unit, wherein the at least one resistance unit is arranged on one side of the second circuit board, which is back to the rigid conducting strip, and is electrically connected with the second circuit board; each resistance unit comprises two resistors, and the two resistors are connected with the two piezoresistors in the piezoresistor unit to form a Wheatstone full bridge.
Furthermore, the voltage-sensitive unit comprises four voltage-sensitive resistors, the four voltage-sensitive resistors are connected to form a Wheatstone full bridge, and two output ends of the Wheatstone full bridge are electrically connected with the first circuit board.
It should be emphasized that the number of piezoresistors in the piezoresistor unit provided on the first wiring board should not be limited. In the resistor unit of the second circuit board, a piezoresistor or a common resistor can be used. The resistors and the piezoresistors can be independently arranged, connected to form a Wheatstone half-bridge or connected to form a Wheatstone full-bridge or other connection modes, and the number of the specific piezoresistors and the connection relation among the resistors can be correspondingly arranged according to different application scenes and different application requirements.
The utility model discloses another aspect provides a mobile terminal, this mobile terminal includes arbitrary embodiment the sensor.
Another aspect of the present invention provides a wearable device, which includes the sensor of any of the embodiments.
Another aspect of the present invention provides a household appliance comprising the sensor of any one of the embodiments.
The utility model discloses another aspect provides an electron cigarette, this electron cigarette includes arbitrary embodiment the sensor.
Another aspect of the present invention provides an earphone, comprising any one of the embodiments of the sensor.
The utility model discloses utilize the rigidity conducting strip with pressure and capacitive sensor collection as an organic whole, under the condition that does not increase the regional area of sensing, exert pressure sensor and capacitanc touch sensor's advantage in the at utmost, can avoid respective disadvantage again. In an application scene, whether a key is pressed or not can be detected through the accurate positioning of the capacitive key and the pressure key, so that the defects of the existing capacitive key sensor and the existing pressure key sensor are overcome, and the key can be detected more accurately.
Compared with the prior art, this uses neotype advantage to lie in, the utility model discloses utilize the rigidity conducting strip to detect function integration as an organic whole with pressure detection function and electric capacity touch, under the condition that does not increase the regional area of sensing, realize pressure detection and electric capacity touch simultaneously and detect, not only reduce the space that the sensor occupy, still reduced the cost.
Drawings
Fig. 1 is a schematic structural diagram of a sensor implemented by an embodiment of the present invention;
fig. 2 is a bottom view of a sensor implemented by an embodiment of the present invention;
fig. 3 is a bottom view of a sensor implemented in accordance with another embodiment of the present invention;
fig. 4 is a bottom view of a sensor implemented in accordance with yet another embodiment of the present invention;
fig. 5 is a schematic structural diagram of a sensor implemented by yet another embodiment of the present invention;
fig. 6 is a schematic view of a first perspective of a sensor implemented in accordance with a further embodiment of the present invention;
fig. 7 is a schematic view of a second perspective of a sensor implemented in accordance with a further embodiment of the present invention;
fig. 8 is a schematic diagram of a usage status of a sensor implemented by another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
referring to fig. 1, the present invention provides a sensor, which includes a first circuit board 11, at least one pressure-sensitive unit 12, and at least two rigid conductive sheets 13; at least two rigid conductive sheets 13 are arranged on one side of the first circuit board 11, and the two adjacent rigid conductive sheets 13 are arranged at intervals; the pressure-sensitive unit 12 is arranged on the other side of the first circuit board 11, and the pressure-sensitive unit 12 is opposite to a gap formed between the adjacent rigid conductive sheets 13; wherein, the at least two rigid conductive sheets 13 and the pressure sensitive unit 12 are electrically connected with the first circuit board 11.
In this embodiment, a circuit is drawn on the first circuit board, and the rigid conductive sheet and the pressure-sensitive unit are respectively connected to the external measurement chip through the circuit on the first circuit board. The rigid conductive sheet 13 is used as a capacitor plate after the sensor is formed, and when a finger of a user does not touch the rigid conductive sheet 13, a static capacitor is formed between the rigid conductive sheet 13 and the ground. When a finger of a user touches or approaches the surface of the sensor, the parasitic capacitance of the human body is coupled to the static capacitance, so that the static capacitance value of the rigid conductive sheet 13 to the ground is changed, and a change signal of the capacitance value is transmitted to the external measurement chip through the first circuit board, so that the external measurement chip can detect the touch operation of the user through signal processing and calculation. In addition, when the sensor is subjected to pressure, for example, when a user's finger presses the surface of the sensor, the pressure-sensitive resistor in the pressure-sensitive cell is deformed and the resistance value is changed, so that the voltage value of the pressure-sensitive cell is changed. The voltage value change of the pressure-sensitive unit is transmitted to an external measuring chip through the first circuit board, so that the external measuring chip can detect the pressure borne by the surface of the sensor through signal processing and calculation. Because the pressure-sensitive unit 12 is arranged at the position opposite to the gap between the two adjacent rigid conductive sheets 13, the rigid conductive sheets 13 are not easy to bend, the deformation of the touched surface is accumulated to the gap between the two rigid conductive sheets, the deformation of the pressure-sensitive resistor in the pressure-sensitive unit 12 is increased, and therefore the variation of the output voltage value of the pressure-sensitive unit is enhanced, and the sensitivity of pressure detection is improved.
The sensor of this embodiment not only utilizes the clearance reinforcing pressure detection's of two rigidity conducting strips ingeniously sensitivity, still regards rigidity conducting strip as the capacitance polar plate, realizes touch detection. The sensor can realize pressure detection and capacitance touch detection simultaneously under the condition of not increasing the area of a sensing area, and realizes a novel sensor with small space and low cost.
Further, the first circuit board 11 is a flexible printed circuit board or a PCB board.
In one embodiment, the first circuit board 11 is connected to an external measurement chip, and the external measurement chip detects the resistance change of the pressure-sensitive unit 12 through the first circuit board 11, so as to calculate the pressure value borne by the pressure-sensitive unit 12.
Referring to fig. 1 and 2, in one embodiment, the voltage-dependent unit 12 includes a voltage-dependent resistor electrically connected to the first circuit board 11. The external measuring chip detects the voltage change of the piezoresistor through the first circuit board 11, so as to calculate and obtain the pressure value born by the piezoresistor. The single piezoresistor is used, so that the production cost of the sensor is reduced, the integral manufacturing difficulty of the sensor is reduced and the volume of a finished sensor product is effectively reduced while the pressing is effectively sensed.
Referring to fig. 1 and fig. 3, in an embodiment, the voltage-dependent unit 12 includes two voltage-dependent resistors, the two voltage-dependent resistors are connected to form a wheatstone half-bridge, and output terminals of the wheatstone half-bridge are electrically connected to the first circuit board 11. The external measurement chip detects the voltage change of the output end of the Wheatstone half-bridge through the first circuit board 11, and therefore the pressure value born by the pressure-sensitive unit is calculated. The Wheatstone half bridge divides voltage through two voltage dependent resistors, and the voltage of the output end of the Wheatstone half bridge changes obviously relative to the reference voltage, so that the sensitivity of the sensor can be improved.
Referring to fig. 1 and 4, in an embodiment, the voltage-dependent unit 12 includes four voltage-dependent resistors, the four voltage-dependent resistors are connected to form a wheatstone full bridge, and two output terminals of the wheatstone full bridge are electrically connected to the first circuit board 11. The external measurement chip detects the voltage change of the two output ends of the Wheatstone full bridge through the first circuit board 11, and compares the difference of the voltage change of the two output ends as a differential input signal with a reference voltage, thereby calculating the pressure value born by the pressure-sensitive unit. When the resistance value of the piezoresistor changes, the difference between the voltage variation of the two outputs of the Wheatstone full bridge is obvious, so that the sensitivity of the sensor is improved.
Referring to fig. 5, in an embodiment, the sensor further includes a second circuit board 14 and a resistor unit 15, the second circuit board 14 is fixed on a side of the rigid conductive sheet 13 away from the first circuit board 11 by an insulating adhesive, and at least one resistor unit 15 is disposed on a side of the second circuit board 14 opposite to the rigid conductive sheet 13 and electrically connected to the second circuit board 14. Each resistor unit 15 includes two resistors, and the two resistors are connected with the two voltage dependent resistors in the voltage dependent unit 12 to form a wheatstone full bridge.
In one embodiment, as shown in fig. 6-7, a plurality of pressure sensitive cells 12 may be disposed on the first circuit board 11, and a plurality of resistive cells 15 may also be disposed on the second circuit board 14. It should be emphasized that the number of piezoresistors in each piezoelement 12 should not be limited. In other words, the number of piezoresistors in different piezounits 12 can be the same or different on the same first circuit board 11. In the resistance unit of the second wiring board 14, a varistor or a common resistor may be used. The resistors and the piezoresistors can be independently arranged, connected to form a Wheatstone half-bridge or connected to form a Wheatstone full-bridge or other connection modes, and the number of the specific piezoresistors and the connection relation among the resistors can be correspondingly arranged according to different application scenes and different application requirements.
In one embodiment, as shown in FIG. 8, the sensor is disposed within a housing B of the electronic device. The surface of the sensor close to the electronic equipment shell B is coated with an insulating coating A to prevent short circuit.
In one application scenario, the problem that the traditional pressure sensor or the capacitive touch sensor is easy to operate incorrectly can be solved through the sensor. The conventional pressure sensor generally detects pressure when being pressed by a foreign object to thereby falsely trigger a corresponding operation, and the conventional capacitive touch sensor generally falsely triggers a corresponding operation when a user unintentionally touches. Adopt the utility model discloses a sensor can just carry out corresponding operation when detecting human touch and reaching the certain degree at the pressure value of touch, reduces the maloperation probability.
The sensor is applied to the reality, can be applied to mobile terminals, electronic cigarettes, wearable equipment, earphones and household appliances, and can be specifically set by technical personnel in the field according to actual use conditions.
In one embodiment, a mobile terminal is provided that includes at least one sensor as described in any of the above embodiments. The sensor can be arranged on a shell or a frame of the mobile terminal and is connected with a measuring chip in the mobile terminal. The sensor can be arranged in at least one pressure touch key of the mobile terminal to detect the pressing and touch operation of a user on the mobile terminal. Among them, the mobile terminal may include but is not limited to: mobile phones, notebook computers, tablet computers, electronic paper book readers, palm computers, POS machines and the like.
In one embodiment, a wearable device is provided, the wearable device comprising at least one sensor as described in any of the above embodiments. The sensor may be disposed on a housing of the wearable device and connected to a measurement chip within the wearable device. The sensor can be arranged in at least one pressure touch key of the wearable device to detect pressing and touch operation of a user on the wearable device. Among others, wearable devices may include, but are not limited to: electronic bracelets, electronic watches, smart clothing, and the like.
In one embodiment, a household appliance is provided, comprising at least one sensor according to any of the above embodiments. The sensor can be arranged on the shell of the household appliance and is connected with a measuring chip in the household appliance. The sensor can be arranged in at least one pressure touch key of the household appliance to detect the pressing and touch operation of a user on the household appliance key. Among them, the home appliances may include but are not limited to: refrigerator, electric rice cooker, washing machine, air conditioner, intelligent closestool etc..
In one embodiment, an electronic scale is provided that includes at least one sensor as described in any of the above embodiments. The sensor can be arranged on a shell of the electronic scale and is connected with a measuring chip in the electronic scale. The sensor can be arranged in at least one pressure touch key of the electronic scale so as to detect the pressing and touch operation of a user on the keys of the electronic scale. Electronic scales may include, but are not limited to: kitchen scales, weight scales, body fat scales, and the like.
In one embodiment, there is provided an electronic cigarette comprising at least one sensor as described in any of the above embodiments. The sensor may be disposed on a housing of the electronic cigarette and connected to a measurement chip within the electronic cigarette. The sensor can be arranged in at least one pressure touch key of the electronic cigarette to detect pressing and touch operation of a user on the electronic cigarette key. The electronic cigarette can be a tobacco tar atomization type electronic cigarette or a heating non-combustion type electronic cigarette.
In one embodiment, there is provided a headset comprising at least one sensor as described in any of the above embodiments. The sensor can be arranged on the shell of the earphone and connected with a measuring chip in the earphone. The sensor can be arranged in at least one pressure touch key of the earphone so as to detect the pressing and touch operation of a user on the earphone key. Wherein, the earphone can be a wired earphone or a wireless earphone.
The utility model discloses utilize rigidity conducting strip 13 to detect pressure detection function and electric capacity touch detection function collection as an organic whole, under the condition that does not increase the regional area of sensing, realize pressure detection and electric capacity touch detection simultaneously, not only reduce the equipment area that the sensor occupy, still reduced the cost.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A sensor is characterized by comprising a first circuit board, at least one pressure-sensitive unit and at least two rigid conducting strips; the at least two rigid conductive sheets are arranged on one side of the first circuit board, and the two adjacent rigid conductive sheets are arranged at intervals; the at least one pressure-sensitive unit is arranged on the other side of the first circuit board, and each pressure-sensitive unit is opposite to a gap between two adjacent rigid conductive sheets;
the at least two rigid conductive sheets and the at least one pressure-sensitive unit are electrically connected with the first circuit board respectively.
2. The sensor of claim 1, wherein the first circuit board is a flexible printed circuit board or a PCB board.
3. The sensor of claim 1, wherein at least one of said piezo-elements comprises a piezo-resistor electrically connected to said first wiring board.
4. The sensor of claim 1, wherein at least one of the piezo-elements comprises two piezoresistors, the two piezoresistors being connected to form a wheatstone half-bridge, the output of the wheatstone half-bridge being electrically connected to the first wiring board.
5. The sensor of claim 4, further comprising a second circuit board and at least one resistor unit, wherein the second circuit board is fixed on the side of the rigid conductive sheet far away from the first circuit board through an insulating adhesive, and the at least one resistor unit is arranged on the side of the second circuit board, which is far away from the rigid conductive sheet, and is electrically connected with the second circuit board;
each resistance unit comprises two resistors, and the two resistors are connected with the two piezoresistors in the piezoresistor unit to form a Wheatstone full bridge.
6. The sensor according to claim 1, wherein the piezo-element comprises four piezo-resistors, the four piezo-resistors are connected to form a Wheatstone full bridge, and two output terminals of the Wheatstone full bridge are electrically connected to the first circuit board.
7. A mobile terminal, characterized in that it comprises a sensor according to any of claims 1-6.
8. A domestic appliance, characterized in that it comprises a sensor according to any one of claims 1-6.
9. A wearable device, characterized in that the wearable device comprises a sensor according to any of claims 1-6.
10. An electronic cigarette, characterized in that the electronic cigarette comprises a sensor according to any one of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990062.XU CN210157168U (en) | 2019-06-27 | 2019-06-27 | Sensor, mobile terminal, wearable equipment, household appliance and electronic cigarette |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920990062.XU CN210157168U (en) | 2019-06-27 | 2019-06-27 | Sensor, mobile terminal, wearable equipment, household appliance and electronic cigarette |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210157168U true CN210157168U (en) | 2020-03-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920990062.XU Active CN210157168U (en) | 2019-06-27 | 2019-06-27 | Sensor, mobile terminal, wearable equipment, household appliance and electronic cigarette |
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| Country | Link |
|---|---|
| CN (1) | CN210157168U (en) |
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- 2019-06-27 CN CN201920990062.XU patent/CN210157168U/en active Active
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