CN211201449U - Electromagnetic interference resistance's signal processing mechanism and intelligent lock - Google Patents
Electromagnetic interference resistance's signal processing mechanism and intelligent lock Download PDFInfo
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- CN211201449U CN211201449U CN201921642867.1U CN201921642867U CN211201449U CN 211201449 U CN211201449 U CN 211201449U CN 201921642867 U CN201921642867 U CN 201921642867U CN 211201449 U CN211201449 U CN 211201449U
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Abstract
The utility model provides a signal processing mechanism and an intelligent lock for preventing electromagnetic interference, wherein the signal processing mechanism supplies power to a static pre-processing module and a processor through a power module; the input end and the output end of the static electricity preprocessing module are respectively connected with a touch panel of the intelligent door lock and a data receiving end of the processor, the static electricity preprocessing module comprises a first static electricity protection diode and a first capacitor which are connected in parallel, one end of the first capacitor is grounded, static electricity transmitted by the touch panel is eliminated through the first static electricity protection diode and the first capacitor, and a touch signal transmitted by the touch panel is sent to the processor; and the processor receives the touch signal transmitted by the static electricity preprocessing module and executes corresponding operation according to the touch signal. The utility model discloses can eliminate the static of touch panel transmission, avoid static to touch signal's interference, improve the sensitivity of intelligent lock, save the electric quantity of intelligent lock to user experience has been promoted and has been felt.
Description
Technical Field
The utility model relates to an intelligence lock technical field especially relates to electromagnetic interference resistance's signal processing mechanism and intelligent lock.
Background
With the improvement of living standard of people, the family safety becomes more and more important, and the house entrance guard becomes extremely important as the most direct and important safety protection of family, and the choice of which kind of lockset to install becomes extremely important. The existing entrance guard market consumers choose the most installed lock to be the intelligent lock.
At present, the most basic functions of the intelligent door lock are password identification except fingerprint identification, wherein the password identification is mostly realized in a capacitive touch mode, but a touch panel of the intelligent door lock which realizes the touch identification in the capacitive touch mode is easily influenced by static electricity. Static electricity is a static or non-flowing charge. Static electricity is formed when charges accumulate on an object or surface. Static electricity is very easy to produce in daily life, when fingers, clothes or other objects with static electricity are close to and contact with the touch panel, static electricity is easily transmitted to other devices connected with the touch panel through the touch panel, interference is caused to normal work of other devices, and static electricity also can cause interference to touch signals received by the touch panel, so that the intelligent lock is mistakenly awakened, awakening fails or even crashes, the sensitivity of the intelligent lock is easily reduced due to the conditions, inconvenience is brought to a user, electric quantity loss of the intelligent lock can be caused, and experience of the user is reduced.
SUMMERY OF THE UTILITY MODEL
In order to overcome the not enough of prior art, the utility model provides an electromagnetic interference resistance's signal processing mechanism and intelligent lock can eliminate the static of touch panel transmission, avoids static to touch signal's interference, has improved the sensitivity of intelligent lock, has saved the electric quantity of intelligent lock to user experience has been promoted and has felt.
In order to solve the above problem, the utility model discloses a technical scheme do: a signal processing mechanism for preventing electromagnetic interference comprises a power supply module, at least one static electricity preprocessing module and a processor, wherein the power supply module is respectively connected with the static electricity preprocessing module and the processor and supplies power to the static electricity preprocessing module and the processor through the power supply module; the input end and the output end of the static electricity preprocessing module are respectively connected with the touch panel of the intelligent door lock and the data receiving end of the processor, the static electricity preprocessing module comprises a first static electricity protection diode and a first capacitor which are connected in parallel, one end of the first capacitor is grounded, static electricity transmitted by the touch panel is eliminated through the first static electricity protection diode and the first capacitor, and touch signals transmitted by the touch panel are sent to the processor; and the processor receives the touch signal transmitted by the static electricity preprocessing module and executes corresponding operation according to the touch signal.
Further, the power module comprises a second electrostatic protection diode, and the output end of the power module is connected in parallel with the output end of the second electrostatic protection diode.
Further, the power module further comprises a voltage converter, a voltage output end of the voltage converter is connected with one end of the second electrostatic protection diode, a low potential end of the voltage converter is connected with the other end of the second electrostatic protection diode, and the voltage converter is used for converting the input voltage into the working voltage required by the electrostatic preprocessing module and the processor.
Furthermore, the power module further comprises a second capacitor, a third capacitor, a fourth capacitor and a fifth capacitor, one end of the second capacitor is connected with the low potential end of the voltage converter, the other ends of the second capacitor and the third capacitor are connected with the voltage input end of the voltage converter, and the other ends of the fourth capacitor and the fifth capacitor are connected with the voltage output end of the voltage converter.
Further, the low potential terminal of the voltage converter is grounded.
Furthermore, the static electricity preprocessing module further comprises a first resistor, wherein one end of the first resistor is connected with the first capacitor, and the other end of the first resistor is connected with a data receiving end of the processor.
Further, the resistance value of the first resistor is 4.7K Ω, and the capacitance value of the first capacitor is 100 pF.
Further, the signal processing mechanism further comprises a conductive material, and the conductive material covers the vacant port of the processor and the fixing hole of the processor.
Further, the signal processing mechanism further comprises an insulating layer, and the insulating layer wraps the processor.
Based on the same inventive concept, the utility model discloses still provide an intelligent lock, wherein, intelligent lock includes electromagnetic interference resistance's signal processing mechanism as above.
Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses be connected touch panel and static pretreatment module, handle the static of touch panel transmission through first electrostatic protection diode, first electric capacity among the static pretreatment module, can eliminate the static of touch panel transmission, avoid static to touch signal's interference, improved the sensitivity of intelligent lock, saved the electric quantity of intelligent lock to user experience has been promoted and has felt.
Drawings
FIG. 1 is a diagram of an embodiment of an EMI-proof signal processing mechanism of the present invention;
fig. 2 is a circuit diagram of an embodiment of a power module in the electromagnetic interference prevention signal processing mechanism of the present invention;
FIG. 3 is a circuit diagram of an embodiment of an electrostatic pre-processing module and a processor in the electromagnetic interference prevention signal processing mechanism of the present invention;
fig. 4 is a structural diagram of an embodiment of the intelligent lock of the present invention.
In the figure: u12, a processor; c2, a first capacitance; d2, a first electrostatic protection diode; u4, voltage converter; d10, a second electrostatic protection diode; c88, a second capacitor; c86, a third capacitance; c21, a fourth capacitance; c79, a fifth capacitance; VSS, low potential terminal; VIN, voltage input terminal; VOUT, voltage output terminal; VDD, voltage terminal; VSSD, digital low potential terminal; c41, a sixth capacitor; c43, a seventh capacitance; d14, a third electrostatic protection diode; r77, first resistance.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.
Referring to fig. 1-3, fig. 1 is a structural diagram of an embodiment of an electromagnetic interference preventing signal processing mechanism of the present invention; fig. 2 is a circuit diagram of an embodiment of a power module in the electromagnetic interference prevention signal processing mechanism of the present invention; fig. 3 is a circuit diagram of an embodiment of an electrostatic pre-processing module and a processor in the electromagnetic interference prevention signal processing mechanism of the present invention. The electromagnetic interference preventing signal processing mechanism of the present invention will be described in detail with reference to the accompanying drawings 1-3.
In this embodiment, electromagnetic interference resistance's signal processing mechanism can be used to cell-phone, intelligent lock, fingerprint equipment of checking card and other devices that set up touch panel, and it is right to use intelligent lock as an example below the utility model discloses electromagnetic interference resistance's signal processing mechanism does the concrete description.
In this embodiment, the number of the electrostatic pre-processing modules connected to the processor U12 may be multiple, and the specific number may be set according to the user's needs and design requirements, wherein each electrostatic pre-processing module has the same structure, and the following description will take one of the electrostatic pre-processing modules connected to the processor U12 as an example, where the electrostatic pre-processing module includes the first capacitor C2 and the first electrostatic protection diode D2.
In this embodiment, the electromagnetic interference preventing signal processing mechanism includes a power module, at least one static pre-processing module and a processor U12, wherein the power module is respectively connected to the static pre-processing module and the processor U12, and supplies power to the static pre-processing module and the processor U12 through the power module; the input end and the output end of the static electricity preprocessing module are respectively connected with a touch panel of the intelligent door lock and a data receiving end of the processor U12, the static electricity preprocessing module comprises a first static electricity protection diode D2 and a first capacitor C2 which are connected in parallel, one end of the first capacitor C2 is grounded, static electricity transmitted by the touch panel is eliminated through the first static electricity protection diode D2 and the first capacitor C2, and a touch signal transmitted by the touch panel is sent to the processor U12; the processor U12 receives the touch signal transmitted by the electrostatic preprocessing module and executes corresponding operation according to the touch signal.
Static electricity is easily carried by fingers, clothes or other objects, so that the normal use of the intelligent door lock can be influenced by the external static electricity through various channels. The above problems can be effectively solved by the electrostatic preprocessing circuit module. Static electricity transmitted by the touch panel is absorbed by the first static electricity protection diode D2 before entering the processor U12; when the touch panel of intelligence lock is touched in external static electricity, first electric capacity C2 can be with the clutter filtering that external static produced, and finally, first electrostatic protection diode D2 can go out remaining external static through ground connection release.
In the embodiment, the power supply module is responsible for supplying power to the processor U12 and the electrostatic preprocessing circuit module; the processor U12 is responsible for receiving data sent by the electrostatic preprocessing circuit module and sending instructions to other modules connected with the electrostatic preprocessing circuit module according to the data so as to carry out corresponding control; the static electricity preprocessing circuit module is responsible for processing external static electricity, eliminating interference of the static electricity to the processor U12 and other devices on the intelligent door lock, and sending correct touch signals to the processor U12.
In this embodiment, in order to prevent the power module from being interfered by static electricity, the power module is provided with a second static electricity protection diode D10, and the output terminal of the power module is connected in parallel with the output terminal of the second static electricity protection diode D10.
In this embodiment, the power module further includes a voltage converter U4, a second capacitor C88, a third capacitor C86, a fourth capacitor C21, and a fifth capacitor C79, wherein a voltage output terminal VOUT of the voltage converter U4 is connected to one end of the second esd protection diode D10, a low-potential terminal VSS is connected to the other end of the second esd protection diode D10 and grounded, and the voltage converter U4 converts the input voltage into an operating voltage required by the esd pre-processing module and the processor U12.
In a specific embodiment, the voltage converter U4 is a voltage conversion chip, the voltage at the voltage input terminal VIN is 6V, and the voltage at the voltage output terminal VOUT is 3.3V, in other embodiments, the voltage at the voltage input terminal VIN and the voltage at the voltage output terminal VOUT of the voltage converter U4 may be changed to other voltages according to user needs or design requirements, and only the voltage required for the operation of the processor U12 and the electrostatic pre-processing module needs to be provided by the power supply module, which is not limited herein.
In this embodiment, the low potential terminal VSS of the voltage converter U4 is grounded, one end of each of the second capacitor C88, the third capacitor C86, the fourth capacitor C21 and the fifth capacitor C79 is connected to the low potential terminal VSS of the voltage converter U4, the other end of each of the second capacitor C88 and the third capacitor C86 is connected to the voltage input terminal VIN of the voltage converter U4, and the other end of each of the fourth capacitor C21 and the fifth capacitor C79 is connected to the voltage output terminal VOUT of the voltage converter U4.
In a specific embodiment, the voltage output terminal VOUT of the power module is connected to the voltage terminal VDD of the processor U12, the digital low potential terminal VSSD of the processor U12 is grounded, the digital low potential terminal VSSD and the voltage terminal VDD of the processor U12 are connected in parallel to the sixth capacitor C41, the seventh capacitor C43 and the third electrostatic protection diode D14, and the third electrostatic protection diode D14 is connected in parallel to the second electrostatic protection diode D10.
In this embodiment, the electrostatic pre-processing module further includes a first resistor R77, wherein one end of the first resistor R77 is connected to the first capacitor C2, and the other end is connected to the data receiving terminal of the processor U12. The electrostatic preprocessing module transmits a touch signal transmitted from the touch panel to the processor U12 through the first resistor R77, and limits a current generated by static electricity through the first resistor R77, thereby protecting the processor U12.
In one specific embodiment, the first resistor R77 has a resistance of 4.7K Ω, and the first capacitor C2 has a capacitance of 100 pF.
In this embodiment, the processor U12 is an MCU, specifically a touch-control single chip, and the type of the processor U12 may be a touch-control single chip or a touch chip of different types in the prior art, which is not limited herein.
In order to enlarge the grounding area of the processor U12, the signal processing mechanism further comprises a conductive material, and the conductive material covers the vacant ports of the processor U12 which are not connected with the processor U12 and the fixing holes for fixing the processor U12, so that static electricity can be guided into the ground by a large amount of the conductive material after entering the processor U12.
In this embodiment, the conductive material is a copper foil, in other embodiments, the conductive material may be aluminum, iron, or other metal conductive materials, and may also be graphene or other non-metal conductive materials, and only the static electricity can be conducted into the ground through the conductive material, which is not limited herein.
External static produces the influence mainly because the material of lock is mostly metal manufacturing, the conduction of easy static, for the interference of further preventing static, signal processing mechanism still includes the insulating layer, insulating layer parcel treater U12.
In this embodiment, the insulating layer is plastic, and in other embodiments, the insulating layer may also be resin, glass, ceramic, or other insulating materials.
Through the static electricity preprocessing module, the conductive material and the insulating layer of the embodiment, the influence of external static electricity on the intelligent door lock can be effectively prevented, and the occurrence of the password misidentification condition caused by the fact that static electricity enters the processor U12 is prevented.
Has the advantages that: the utility model discloses be connected touch panel and static pretreatment module, handle the static of touch panel transmission through first electrostatic protection diode, first electric capacity among the static pretreatment module, can eliminate the static of touch panel transmission, avoid static to touch signal's interference, improved the sensitivity of intelligent lock, saved the electric quantity of intelligent lock to user experience has been promoted and has felt.
Based on the same inventive concept, the present invention further provides an intelligent lock, please refer to fig. 4, fig. 4 is a structural diagram of an embodiment of the intelligent lock of the present invention, wherein the intelligent lock includes the electromagnetic interference preventing signal processing mechanism according to the above embodiment, which is not described in detail herein.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, the modules or partitions may be merely logical partitions, and may be implemented in other ways, e.g., multiple modules or components may be combined or integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, devices or indirect coupling or communication connection, and may be in an electrical, mechanical or other form.
The components described as separate parts may or may not be physically separate, and the components shown may or may not be physical, that is, may be located in one place, or may be distributed on a plurality of networks. Some or all of them can be selected according to actual needs to achieve the purpose of the embodiment.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.
Claims (10)
1. An electromagnetic interference prevention signal processing mechanism is characterized in that the signal processing mechanism comprises a power supply module, at least one static electricity preprocessing module and a processor,
the power supply module is respectively connected with the static electricity preprocessing module and the processor, and supplies power to the static electricity preprocessing module and the processor through the power supply module;
the input end and the output end of the static electricity preprocessing module are respectively connected with a touch panel of the intelligent door lock and a data receiving end of the processor, the static electricity preprocessing module comprises a first static electricity protection diode and a first capacitor which are connected in parallel, one end of the first capacitor is grounded, static electricity transmitted by the touch panel is eliminated through the first static electricity protection diode and the first capacitor, and a touch signal transmitted by the touch panel is sent to the processor;
and the processor receives the touch signal transmitted by the static electricity preprocessing module and executes corresponding operation according to the touch signal.
2. The electromagnetic interference prevention signal processing mechanism of claim 1, wherein the power module comprises a second esd diode, and the output terminal of the power module is connected in parallel with the output terminal of the second esd diode.
3. The electromagnetic interference preventing signal processing mechanism of claim 2, wherein the power module further comprises a voltage converter, a voltage output terminal of the voltage converter is connected to one terminal of the second esd diode, and a low potential terminal is connected to the other terminal of the second esd diode, so that the voltage converter converts an input voltage into an operating voltage required by the electrostatic pre-processing module and the processor.
4. The electromagnetic interference prevention signal processing mechanism of claim 3, wherein the power module further comprises a second capacitor, a third capacitor, a fourth capacitor and a fifth capacitor, one end of the second capacitor is connected to the low potential end of the voltage converter, the other end of the second capacitor and the other end of the third capacitor are connected to the voltage input end of the voltage converter, and the other end of the fourth capacitor and the other end of the fifth capacitor are connected to the voltage output end of the voltage converter.
5. An EMI protected signal processing mechanism as claimed in claim 4, wherein said low potential side of said voltage transformer is grounded.
6. The electromagnetic interference prevention signal processing mechanism of claim 1, wherein the electrostatic pre-processing module further comprises a first resistor, one end of the first resistor is connected to the first capacitor, and the other end of the first resistor is connected to the data receiving end of the processor.
7. The electromagnetic interference prevention signal processing mechanism of claim 6, wherein the resistance of the first resistor is 4.7K Ω, and the capacitance of the first capacitor is 100 pF.
8. The electromagnetic interference shielding signal processing mechanism of claim 1, further comprising a conductive material covering the vacant port of the processor and the fixing hole of the processor.
9. The electromagnetic interference shielding signal processing mechanism of claim 1 further comprising an insulating layer, wherein the insulating layer surrounds the processor.
10. An intelligent lock, characterized in that it comprises a signal processing mechanism for electromagnetic interference prevention according to any of claims 1-9.
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| CN201921642867.1U CN211201449U (en) | 2019-09-29 | 2019-09-29 | Electromagnetic interference resistance's signal processing mechanism and intelligent lock |
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| CN201921642867.1U CN211201449U (en) | 2019-09-29 | 2019-09-29 | Electromagnetic interference resistance's signal processing mechanism and intelligent lock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343434A (en) * | 2020-09-17 | 2021-02-09 | 温州大学乐清工业研究院 | Electrostatic discharge structure and method of intelligent electronic lock |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112343434A (en) * | 2020-09-17 | 2021-02-09 | 温州大学乐清工业研究院 | Electrostatic discharge structure and method of intelligent electronic lock |
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Address after: 511434 No.1 and No.2, Shihua Road, Hualong Town, Panyu District, Guangzhou City, Guangdong Province Patentee after: Guangdong haomadame smart home Co.,Ltd. Address before: No.1, No.2 highway, No.2, Panyu, Guangzhou Patentee before: GUANGDONG KELAINI INTELLIGENT TECHNOLOGY Co.,Ltd. |
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