CN220019874U - Be applied to intelligent lock's ultrasonic sensor and intelligent lock - Google Patents
Be applied to intelligent lock's ultrasonic sensor and intelligent lock Download PDFInfo
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- CN220019874U CN220019874U CN202223076487.0U CN202223076487U CN220019874U CN 220019874 U CN220019874 U CN 220019874U CN 202223076487 U CN202223076487 U CN 202223076487U CN 220019874 U CN220019874 U CN 220019874U
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- 230000002147 killing effect Effects 0.000 abstract description 2
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Abstract
The utility model provides an ultrasonic sensor applied to an intelligent door lock and the intelligent door lock, wherein the ultrasonic sensor applied to the intelligent door lock comprises: the intelligent door lock comprises an ultrasonic chip body, a control circuit board and a control circuit board, wherein the ultrasonic chip body is welded on a PCB (printed circuit board) of the intelligent door lock through the application circuit board; the ultrasonic chip body is provided with a chip sound outlet, and the central part of the sound outlet is opposite to the central part of the chip sound outlet. The ultrasonic sensor that this intelligent lock adopted can accurately detect the distance of barrier, and detection angle is great, and ultrasonic sensor's interference killing feature is strong and receive ambient temperature influence not big simultaneously to whole improvement detection accuracy.
Description
Technical Field
The utility model relates to the technical field of intelligent door locks, in particular to an ultrasonic sensor applied to an intelligent door lock and the intelligent door lock.
Background
The existing intelligent door lock can realize partial functions when approaching to a sensor equipped with the intelligent door lock, and various sensors for existing approaching detection exist, such as an infrared detection sensor, a millimeter wave radar and the like.
The infrared detection sensor can be divided into an active infrared detection sensor and a passive infrared detection sensor, and based on the active infrared detection sensor, the active infrared detection sensor needs an infrared emitter and an infrared receiver at the same time, so that the anti-interference capability is poor, for example, strong light interference is generated, and the infrared receiver exceeds a threshold value due to the same-frequency strong light infrared spectrum; based on the passive infrared detection sensor, the passive infrared detection sensor is also commonly called a PIR sensor, the device is greatly affected by temperature, and the sensitivity at high temperature is sometimes invalid; based on the radar sensor, the electromagnetic wave propagation principle is adopted to detect the moving object, the detection error of the sensor is relatively large, and the accurate positioning can not be realized.
Most of the existing intelligent door locks detect through an infrared sensor or a radar sensor, and based on an active infrared detection sensor, when a human body approaches, infrared light emitted by an infrared emitter to the human body is reflected by the human body, and whether the human body approaches is judged through receiving by an infrared receiver; based on the passive infrared detection sensor, whether a human body approaches is judged by detecting an infrared spectrum emitted by the human body; based on the radar sensor, the principle of the Doppler effect of electromagnetic wave propagation is adopted to detect whether a human body approaches, the radar sensor emits electromagnetic waves with specific frequency, when the human body approaches, the electromagnetic waves reflected by the human body have Doppler effect, and the moving object is detected by detecting the frequency change.
However, the detection mode based on the active infrared detection sensor has the problems that the detection angle is small, the detection distance error is large, the obstacle cannot be accurately detected under strong light interference, and the like; based on the detection mode of the passive infrared detection sensor, the influence of the ambient temperature is relatively large, and the sensitivity is poor at high temperature; the detection mode based on the radar sensor has large detection distance precision error and low sensitivity to slow moving objects.
How to provide an intelligent door lock technology with excellent detection effect is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the present utility model provides an ultrasonic sensor applied to an intelligent door lock and the intelligent door lock, which solve the above problems, and the technical scheme is as follows:
an ultrasonic sensor for an intelligent door lock, the ultrasonic sensor comprising:
the intelligent door lock comprises an ultrasonic chip body, a control circuit board and a control circuit board, wherein the ultrasonic chip body is welded on a PCB (printed circuit board) of the intelligent door lock through the application circuit board;
the ultrasonic chip body is provided with a chip sound outlet, and the central part of the sound outlet is opposite to the central part of the chip sound outlet.
Preferably, in the above ultrasonic sensor, the ultrasonic sensor further includes:
and the ultrasonic steel mesh is positioned at one side of the ultrasonic sound cover, which is away from the ultrasonic chip body.
Preferably, in the above ultrasonic sensor, the ultrasonic sensor further includes:
the waterproof film is attached to the surface of the ultrasonic steel mesh, which faces one side of the ultrasonic chip body.
In the above ultrasonic sensor, the sound outlet of the sound cover may have a circular shape.
Preferably, in the above ultrasonic sensor, the diameter of the sound outlet hole of the sound cover is equal to the diameter of the sound outlet hole of the chip.
Preferably, in the above ultrasonic sensor, the diameter of the sound outlet hole of the sound cover is 1.2mm.
Preferably, in the above ultrasonic sensor, the thickness of the sound outlet hole of the sound cover is 1.25mm.
Preferably, in the above ultrasonic sensor, the application circuit board further includes a peripheral circuit;
the peripheral circuit is electrically connected with the power supply end of the intelligent door lock and is at least used for providing working power supply for the application circuit board.
Preferably, in the above ultrasonic sensor, a surface around the sound hole of the sound cover is a high-brightness surface.
An intelligent door lock comprising an intelligent door lock processor and an ultrasonic sensor as described in any one of the above.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model provides an ultrasonic sensor applied to an intelligent door lock, which comprises: the intelligent door lock comprises an ultrasonic chip body, a control circuit board and a control circuit board, wherein the ultrasonic chip body is welded on a PCB (printed circuit board) of the intelligent door lock through the application circuit board; the ultrasonic chip body is provided with a chip sound outlet, and the central part of the sound outlet is opposite to the central part of the chip sound outlet. The ultrasonic sensor that this intelligent lock adopted can accurately detect the distance of barrier, and detection angle is great, and ultrasonic sensor's interference killing feature is strong and receive ambient temperature influence not big simultaneously to whole improvement detection accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of an equivalent simulation structure of an ultrasonic sensor applied to an intelligent door lock according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of an equivalent simulation structure of the front face of another ultrasonic sensor applied to an intelligent door lock according to an embodiment of the present utility model;
fig. 3 is a schematic diagram of an equivalent simulation structure of the back of an ultrasonic sensor applied to an intelligent door lock according to another embodiment of the present utility model;
fig. 4 is a schematic diagram of a partially equivalent simulation structure of an ultrasonic sensor applied to an intelligent door lock according to another embodiment of the present utility model;
fig. 5 is a schematic view of a part of an ultrasonic sensor applied to an intelligent door lock according to another embodiment of the present utility model;
fig. 6 is a schematic view of a part of an ultrasonic sensor applied to an intelligent door lock according to another embodiment of the present utility model;
fig. 7 is a schematic view of a part of an ultrasonic sensor applied to an intelligent door lock according to another embodiment of the present utility model;
FIG. 8 is a schematic diagram of an equivalent simulation structure shown in FIG. 5;
FIG. 9 is a schematic diagram of an equivalent simulated structure shown in FIG. 6;
FIG. 10 is a schematic diagram of an equivalent simulated structure shown in FIG. 7;
fig. 11 is a schematic structural diagram of an intelligent door lock according to an embodiment of the present utility model.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Based on the description of the background technology, the embodiment of the utility model provides the ultrasonic sensor applied to the intelligent door lock and the intelligent door lock, wherein the ultrasonic sensor is adopted to carry out intelligent recognition when someone approaches, so that detection within a certain range can be accurately set, detection approaching the intelligent door lock can not be detected under the condition of being greater than a set distance, the distance detection precision is improved, and meanwhile, the ultrasonic sensor has strong anti-interference capability and is not greatly influenced by the environmental temperature, so that the detection precision is integrally improved.
In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to the appended drawings and appended detailed description.
Referring to fig. 1 to 4, fig. 1 is a schematic diagram of an equivalent simulation structure of an ultrasonic sensor applied to an intelligent door lock according to an embodiment of the present utility model; fig. 2 is a schematic diagram of an equivalent simulation structure of the front face of another ultrasonic sensor applied to an intelligent door lock according to an embodiment of the present utility model; fig. 3 is a schematic diagram of an equivalent simulation structure of the back of an ultrasonic sensor applied to an intelligent door lock according to another embodiment of the present utility model; fig. 4 is a schematic diagram of a partially equivalent simulation structure of an ultrasonic sensor applied to an intelligent door lock according to another embodiment of the present utility model.
This be applied to intelligent door lock's ultrasonic sensor includes:
the intelligent door lock comprises an ultrasonic chip body 11, wherein the ultrasonic chip body 11 is welded on a PCB (printed circuit board) of the intelligent door lock through an application circuit board 12.
The ultrasonic wave sound cover 14 is positioned on one side of the ultrasonic wave chip body 11, the ultrasonic wave sound cover 14 is provided with a sound cover sound outlet 15, the ultrasonic wave chip body 11 is provided with a chip sound outlet 13, and the central part of the sound cover sound outlet 15 is opposite to the central part of the chip sound outlet 13.
Specifically, in the embodiment of the present utility model, the ultrasonic chip body 11 integrates an ultrasonic sound generating portion and an ultrasonic receiving portion, and has an ultrasonic signal collecting and processing function, and the application circuit board 12 is formed by welding the ultrasonic chip body 11 on a PCB circuit board, where the application circuit board 12 further includes a peripheral circuit; the peripheral circuit is electrically connected with the power supply end of the intelligent door lock, and is at least used for providing working power for the application circuit board 12, that is to say, the peripheral circuit is used for providing power for the application circuit board 12, so that the ultrasonic chip body 11 can work normally.
The ultrasonic sound cover 14 is assembled on the application circuit board 12, and the central part of the chip sound outlet 13 of the ultrasonic chip body 11 is opposite to the central part of the sound cover sound outlet 15, so that after the application circuit board 12 supplies power, the sound waves can generate resonance and emit.
Optionally, in another embodiment of the present utility model, the ultrasonic sensor further includes:
an ultrasonic steel mesh 16 is positioned on the side of the ultrasonic sound cover 14 facing away from the ultrasonic chip body 11.
The ultrasonic sensor further includes: and a waterproof film attached to a surface of the ultrasonic steel mesh 16 facing the ultrasonic chip body 11 side.
Specifically, in the embodiment of the present utility model, the ultrasonic steel mesh 16 is used to prevent dust from entering the ultrasonic sound cover 14 and penetrating into the chip sound outlet hole 13 of the ultrasonic chip body 11, so that the sound wave cannot vibrate; the waterproof membrane is used for preventing accumulated water or water vapor from entering the ultrasonic sound cover 14 and penetrating into the chip sound outlet 13 of the ultrasonic chip body 11 to prevent sound waves from vibrating, so that the working stability and the service life of the ultrasonic sensor are improved.
Optionally, in another embodiment of the present utility model, reference is made to fig. 5, fig. 5 is a schematic diagram of a part of a further ultrasonic sensor applied to an intelligent door lock provided in the embodiment of the present utility model, reference is made to fig. 6, fig. 6 is a schematic diagram of a part of a further ultrasonic sensor applied to an intelligent door lock provided in the embodiment of the present utility model, reference is made to fig. 7, fig. 7 is a schematic diagram of a part of a further ultrasonic sensor applied to an intelligent door lock provided in the embodiment of the present utility model, reference is made to fig. 8, fig. 8 is a schematic diagram of an equivalent simulation structure shown in fig. 5, reference is made to fig. 9, fig. 9 is a schematic diagram of an equivalent simulation structure shown in fig. 6, and reference is made to fig. 10, fig. 10 is a schematic diagram of an equivalent simulation structure shown in fig. 7.
The shape of the sound cover sound outlet hole 15 is circular, the diameter of the sound cover sound outlet hole 15 is equal to the diameter of the chip sound outlet hole 13, the diameter of the sound cover sound outlet hole 15 is 1.2mm, the thickness of the sound cover sound outlet hole 15 is 1.25mm, and the surface around the sound cover sound outlet hole 15 is a high-brightness surface.
Specifically, the design of the ultrasonic sensor applied to the intelligent door lock in the embodiment of the utility model is not simply a simple stack of the application circuit board 12, the ultrasonic chip body 11, the ultrasonic sound cover 14, the waterproof film and the ultrasonic steel mesh 16, but also needs to consider that the ultrasonic wave can normally start after the ultrasonic chip body 11 is electrified, and needs to consider that the ultrasonic wave cannot be attenuated in the ultrasonic sound cover 14, and the like.
In this way, in the embodiment of the present utility model, as shown in fig. 5 to 10, the shape of the sound-cover sound-emitting hole 15 is made to be circular, the diameter of the sound-cover sound-emitting hole 15 is equal to the diameter of the chip sound-emitting hole 13, the diameter of the sound-cover sound-emitting hole 15 is 1.2mm, the thickness of the sound-cover sound-emitting hole 15 is 1.25mm, the surface around the sound-cover sound-emitting hole 15 is a high-brightness surface, and based on the design, the resonance of the sound wave generated inside the ultrasonic sound-cover 14 can be effectively improved, the sound wave can be emitted in an energy-maximization manner, and the propagation distance of the sound wave can be improved.
Optionally, based on all the above embodiments of the present utility model, an intelligent door lock is further provided in another embodiment of the present utility model, and referring to fig. 11, fig. 11 is a schematic structural diagram of an intelligent door lock according to an embodiment of the present utility model, where the intelligent door lock includes an intelligent door lock processor 21 and an ultrasonic sensor according to the above embodiment.
Specifically, in the embodiment of the present utility model, the intelligent door lock processor 21 includes, but is not limited to, an I2C bus communication mode for interacting with the ultrasonic sensor.
After the intelligent door lock and the ultrasonic sensor are powered on, the intelligent door lock processor 21 initializes the ultrasonic sensor, completes the register configuration of the ultrasonic sensor, completes the detection sensitivity configuration, completes the detection distance configuration, completes the processing of preventing the ultrasonic false triggering mechanism, and the like, after the corresponding configuration is completed, the ultrasonic chip regularly generates sound waves, the chip counts the time from the sound wave emission to the sound wave emission, and calculates the distance of the obstacle according to the air propagation speed of the sound waves, so as to judge whether the obstacle exists, and at the moment, if the obstacle exists within the detection distance range of the ultrasonic sensor, the intelligent door lock processor 21 can complete the detection judgment.
The technical scheme for detecting the approach of the obstacle through the ultrasonic sensor provided by the embodiment of the utility model is an optimal technical scheme in the prior art, and the ultrasonic sensor has the advantages of low standby power consumption, small detection distance precision error and the like; the existing obstacle approaching detection schemes in the market have radar, infrared, laser and other ranging modes, the radar mode has large ranging error, the infrared mode has poor anti-strong light interference performance and large ranging error, the laser mode has large standby power consumption, and the technical scheme for carrying out obstacle approaching detection through the ultrasonic sensor provided by the embodiment of the utility model can be known by comparison.
Furthermore, according to the technical scheme for detecting the approach of the obstacle through the ultrasonic sensor, the ultrasonic module can accurately detect the distance of the obstacle through actual testing, and the detection angle is large.
The ultrasonic sensor is a low-power consumption sensor, is very suitable for intelligent door lock products, can realize functions such as starting a face recognition function after approaching wake-up, turning on a doorbell lamp after approaching wake-up, turning on a password lamp after approaching wake-up, and the like; the intelligent door lock has the advantages that the power consumption of the intelligent door lock can be lower by increasing the obstacle approach detection mechanism, the multifunctional intelligent door lock is relatively large in normal power consumption and cannot be opened all the time, the function of waking up the intelligent door lock in a wake-up mode can be achieved through approaching, the intelligent door lock can be used when a user approaches, the power consumption of the intelligent door lock can be reduced, and accordingly the competitiveness of the intelligent door lock can be greatly improved.
It should be noted that, the intelligent door lock processor 21 is an existing processor in the prior art, and the signal interaction and the data processing between the intelligent door lock processor and the ultrasonic module are all existing well-established conventional signal interaction and data processing technologies, that is, the ultrasonic sensor applied to the intelligent door lock and the intelligent door lock provided by the embodiment of the utility model have no improvement on methods, programs, algorithms or computers and the like in any aspect, and are in line with the protection object of the utility model.
The above description of the utility model provides an ultrasonic sensor applied to an intelligent door lock and the intelligent door lock, and specific examples are applied to the description of the principle and the implementation of the utility model, and the description of the above examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present utility model, the present description should not be construed as limiting the present utility model in view of the above.
It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
It is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include, or is intended to include, elements inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. Be applied to intelligent door lock's ultrasonic sensor, a serial communication port, ultrasonic sensor includes:
the intelligent door lock comprises an ultrasonic chip body, a control circuit board and a control circuit board, wherein the ultrasonic chip body is welded on a PCB (printed circuit board) of the intelligent door lock through the application circuit board;
the ultrasonic chip body is provided with a chip sound outlet, and the central part of the sound outlet is opposite to the central part of the chip sound outlet.
2. The ultrasonic sensor of claim 1, further comprising:
and the ultrasonic steel mesh is positioned at one side of the ultrasonic sound cover, which is away from the ultrasonic chip body.
3. The ultrasonic sensor of claim 2, further comprising:
the waterproof film is attached to the surface of the ultrasonic steel mesh, which faces one side of the ultrasonic chip body.
4. The ultrasonic sensor of claim 1, wherein the acoustic cup exit aperture is circular in shape.
5. The ultrasonic sensor of claim 4, wherein the diameter of the acoustic cup acoustic port is equal to the diameter of the chip acoustic port.
6. The ultrasonic sensor of claim 5, wherein the acoustic cup exit aperture has a diameter of 1.2mm.
7. The ultrasonic sensor of claim 6, wherein the acoustic cup sound hole has a thickness of 1.25mm.
8. The ultrasonic sensor of claim 1, wherein the application circuit board further comprises peripheral circuitry;
the peripheral circuit is electrically connected with the power supply end of the intelligent door lock and is at least used for providing working power supply for the application circuit board.
9. The ultrasonic sensor of claim 1, wherein the surface of the acoustic enclosure surrounding the acoustic aperture is a high-brightness surface.
10. A smart door lock, characterized in that it comprises a smart door lock processor and an ultrasonic sensor according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223076487.0U CN220019874U (en) | 2022-11-18 | 2022-11-18 | Be applied to intelligent lock's ultrasonic sensor and intelligent lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223076487.0U CN220019874U (en) | 2022-11-18 | 2022-11-18 | Be applied to intelligent lock's ultrasonic sensor and intelligent lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220019874U true CN220019874U (en) | 2023-11-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223076487.0U Active CN220019874U (en) | 2022-11-18 | 2022-11-18 | Be applied to intelligent lock's ultrasonic sensor and intelligent lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220019874U (en) |
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2022
- 2022-11-18 CN CN202223076487.0U patent/CN220019874U/en active Active
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