WO2021196509A1

WO2021196509A1 - Contactless key and control method therefor

Info

Publication number: WO2021196509A1
Application number: PCT/CN2020/110929
Authority: WO
Inventors: 黄立明; 张永生; 仲兆峰; 郭伟文; 刘贤钊; 谢伟杰
Original assignee: 日立楼宇技术（广州）有限公司
Priority date: 2020-04-01
Filing date: 2020-08-25
Publication date: 2021-10-07
Also published as: AU2020264370B2; KR102441090B1; CN111464168A; CN111464168B; KR20210124011A; AU2020264370A1; JP7195340B2; JP2022530929A

Abstract

Disclosed herein are a contactless key and a control method therefor. The contactless key comprises at least one key unit; the at least one key unit comprises a sensing area expansion module, a distance detection module, and a signal processing module; the distance detection module is connected to the signal processing module; the sensing area expansion module is configured to adjust the sensing area of the distance detection module; the distance detection module is configured to detect the distance from an object located within the sensing area to the contactless key, generate a distance signal, and transmit the distance signal to the signal processing module; and the signal processing module is configured to generate a key control signal according to the distance signal.

Description

Non-contact key and control method thereof

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office with an application number of 202010250190.8 on April 1, 2020. The entire content of this application is incorporated into this application by reference.

Technical field

The present disclosure relates to the field of keys, for example, to a non-contact key and a control method thereof.

Background technique

Most of the keys are mechanical, that is, the signal input function is realized by pressing the physical key to make the key conductor conduct. There are also contact type electronic induction keys that do not require mechanical deformation, but this type of key requires direct contact.

In one embodiment, there are also non-contact keys that are sensed by proximity capacitors, but the required proximity distance of such keys is relatively small, which makes the keys more susceptible to environmental interference and misoperations, which is difficult to control.

Summary of the invention

The present disclosure provides a non-contact button and a control method thereof, so as to adjust the sensing area of the button, enhance the anti-interference ability, and improve the efficiency of using the button.

A non-contact button is provided, which includes at least one button unit, the at least one button unit includes a sensing area expansion module, a distance detection module, and a signal processing module, the distance detection module is connected to the signal processing module;

Wherein, the sensing area expansion module is configured to adjust the sensing area of the distance detection module;

The distance detection module is configured to detect the distance from an object located in the sensing area to the non-contact button, generate a distance signal, and transmit the distance signal to the signal processing module;

The signal processing module is configured to generate a key control signal according to the distance signal.

A key control method is also provided, which is applied to the above non-contact key, and includes:

Obtaining a distance signal through the distance detection module in the non-contact key, where the distance signal is used to indicate the distance from an object located in the sensing area to the non-contact key;

A key control signal is generated according to the distance signal.

Description of the drawings

FIG. 1 is a schematic structural diagram of a non-contact key provided by Embodiment 1 of the present invention;

2 is a schematic structural diagram of another non-contact key provided by Embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of a non-contact key provided by the second embodiment of the present invention;

Fig. 4 is a flowchart of a key control method according to the third embodiment of the present invention.

Detailed ways

The present disclosure will be described below with reference to the drawings and embodiments. The drawings only show parts related to the present disclosure, but not all of the structures.

Example one

The embodiment of the present invention provides a non-contact key, and FIG. 1 is a schematic structural diagram of a non-contact key provided in the first embodiment of the present invention. 1, the non-contact button includes at least one button unit, and the at least one button unit includes a sensing area expansion module 10, a distance detection module 20, and a signal processing module 30, and the distance detection module 20 is connected to the signal processing module 30;

In an embodiment, the sensing area expansion module 10 is configured to adjust the sensing area of the distance detection module 20;

The distance detection module 20 is configured to detect the distance from an object in the sensing area to the non-contact button, generate a distance signal, and transmit the distance signal to the signal processing module 30;

The signal processing module 30 is configured to generate a key control signal according to the distance signal.

In an embodiment, the non-contact key includes at least one key unit, and the at least one key unit includes a sensing area expansion module 10, a distance detection module 20, and a signal processing module 30. The distance detection module 20 is connected to the signal processing module 30. Wherein, the sensing area expansion module 10 is configured to adjust the sensing area of the distance detecting module 20, and the distance detecting module 20 is configured to detect the distance from an object located in the sensing area to the non-contact button. The sensing area is the spatial range within which the distance detection module 20 in the key unit can detect objects. For example, when the sensing area extension module 10 increases the sensing area of the distance detection module 20, referring to FIG. 1, the sensing area extension module 10 can increase the distance. The sensing area of the detection module 20 is embodied that the sensing area b when the sensing area extension module 10 is not provided is increased to the sensing area a after the sensing area extension module 10 is provided, that is, the size of the light area is adjusted, thereby adjusting the sensing area. The sensing area expansion module 10 can also be set to reduce the sensing area of the distance detection module 20, which is set according to actual conditions. When the distance detection module 20 detects an object located in the sensing area, the distance detection module 20 is also set to generate a distance signal according to the distance from the object in the sensing area to the non-contact button. The distance detection module 20 is in a communication connection with the signal processing module 30. The distance detection module 20 can transmit a distance signal to the signal processing module 30, and the signal processing module 30 generates a key control signal to control the key according to the distance signal. The connection mode between the distance detection module 20 and the signal processing module 30 may be a wired connection or a wireless connection, and the connection mode between the distance detection module 20 and the signal processing module 30 is not limited here. The setting of the sensing area expansion module 10 in the embodiment of the present invention realizes the adjustment of the sensing area of the key. In addition, non-contact keys are realized through proximity capacitive sensing. Such keys require that the proximity distance of the detected object is relatively small, which is difficult to control, and is more susceptible to misoperation due to environmental interference. However, the distance detection module 20 provided in the embodiment of the present application It can realize the long-distance monitoring of the object, realize the increase of the sensing area of the button, enhance the anti-interference ability of the button, and improve the use efficiency of the button.

Optionally, the distance detection module 20 includes a time-of-flight sensor. The time-of-flight sensor measures the time required for an object to travel through the medium. Usually, the time-of-flight sensor is a measure of the elapsed time between returning to the flight sensor after being reflected by the object after sending a wave pulse. By converting it into a distance, the flight can be measured. The distance between the time sensor and the object. The time-of-flight sensor can accurately detect objects in the range of 0mm to 100mm or greater with a resolution of 3mm. The distance detection module 20 meets the needs of increasing the sensing area of the button, enhancing the anti-interference ability of the button, and improving the use efficiency of the button.

Optionally, referring to FIG. 1, at least one key unit further includes a housing 40, the sensing area expansion module 10 is fixed on the inner surface of the top of the housing 40, and the distance detection module 20 is placed in the housing 40 and is disposed opposite to the sensing area expansion module 10. And the signal processing module 30 is placed in the housing 40.

Optionally, FIG. 2 is a schematic structural diagram of another non-contact key provided by Embodiment 1 of the present invention. Referring to FIG. 2, the key unit further includes a housing 40, and the sensing area expansion module 10 is fixed on the inner surface of the top of the housing 40, The distance detection module 20 is placed in the housing 40 and opposite to the sensing area expansion module 10, and the signal processing module 30 is placed outside the housing 40.

In an embodiment, each key unit further includes a housing 40 to form a key packaging structure. The sensing area expansion module 10 in the key unit is fixed on the inner surface of the top of the housing 40, the distance detection module 20 is placed in the cavity of the housing 40, and the distance detection module 20 and the sensing area expansion module 10 are disposed oppositely. The signal processing module 30 can be placed inside the cavity of the housing 40, or the signal processing module 30 can be placed outside the housing 40, and the distance signal collected by the distance detection module 20 is processed by the external signal processing module 30. Optionally, each key unit and each signal processing module 30 are arranged in a one-to-one correspondence.

Optionally, referring to FIG. 1, the sensing area expansion module 10 includes a lens 11, and the lens 11 includes a flat surface and a concave arc surface disposed oppositely, and the flat surface is fixed on the inner surface of the housing 40. The focal length of the lens 11 is adjusted by adjusting the material and/or the radius of the curvature of the lens 11 to adjust the size of the light zone. The smaller the focal length of the lens 11 is, the larger the opening angle of the light rays diverging after passing through the lens 11 is, and the range of the sensing area is increased, that is, the lens 11 is a concave lens. In another solution provided by this embodiment, by adjusting the material and/or radius of the lens 11 to adjust the focal length of the lens 11, the size of the light area can be reduced. At this time, the lens 11 includes a flat surface and a convex curved surface that are arranged oppositely. Fixed on the inner surface of the housing 40, that is, the lens 11 is a convex lens.

Optionally, referring to FIG. 1, at least one button unit further includes a button state feedback module 50, the button state feedback module 50 is arranged on the outside of the housing 40, and the button state feedback module 50 is set to feedback button state signals, wherein the button state signals include At least one of an indication signal of no object approach, an indication signal of an object approach, an indication signal of an object entering the sensing area, and an indication signal of successful induction; the signal processing module 30 is connected to the button state feedback module 50, and the signal processing module 30 is also provided In order to output a control signal to the button state feedback module 50 according to the distance signal in combination with the preset sensing distance and the preset sensing time. Optionally, the button state feedback module 50 includes a display device and/or a voice device to visually and/or audibly feedback the sensing state of the button unit to the object.

Exemplarily, the button state feedback module 50 is an indicator light. When the button unit does not sense an object for a long time, the indicator light uses a breathing light to indicate an indication signal that no object is approaching, and the button unit is in a standby state; When the distance detection module 20 finds an object approaching, the indicator light will dimly display an indication signal indicating that the object is approaching; when the distance detection module 20 of the button unit detects an object entering the sensing area, the indicator light flashes quickly It is an indication signal that the object enters the sensing area; when the distance detection module 20 of the key unit confirms that the induction is successful, the indicator light will always be on to indicate the indication signal that the induction is successful.

Optionally, the sensing distance of each key unit can be set separately.

In an embodiment, each key unit can be individually designed with a sensing distance. After the distance detection module 20 collects the distance signal of the object, it sends the distance signal of the object to the signal processing module 30. The signal processing module 30 compares the distance corresponding to the received distance signal of the object with the preset sensing distance. If the sensing distance is greater than the distance corresponding to the received distance signal of the object, it indicates that the key unit is successfully sensed.

In another solution provided by this embodiment, the sensing distance of at least one key unit is adjustable, and the parameters can be fixed values after the product leaves the factory. The sensing distance of the object can be individually designed by setting different preset sensing distances through the signal processing module 30. In the occasion where the key interval is large, the sensing distance of the keys can be increased, and in the case where the key interval is small, the sensing distance of the keys can be reduced. In occasions where the elderly and children operate more frequently, the sensing distance of the keys can be increased, and in densely populated places such as office buildings, the sensing distance of the keys can be reduced. The sensing distance can also be parameterized. After the product is delivered for use, the user can make adjustments according to the use situation. The design is humanized and can provide users with more effective services.

Optionally, the induction time of each key unit can be set separately. The signal processing module 30 sets different preset sensing times to realize a separate design of the sensing time for each key unit.

In another solution provided by this embodiment, the sensing time of at least one key unit is adjustable, and the parameter after the product leaves the factory can be a fixed value. In occasions with high efficiency requirements, the threshold of the induction time, that is, the preset induction time, can be designed to be slightly smaller. In situations where the space environment is harsh and easy to interfere, the threshold of the induction time, that is, the preset induction time, can be designed to be slightly larger. The induction time can also be parameterized. After the product is delivered for use, the user can make adjustments according to the use situation. The design is user-friendly and can provide users with more effective services.

Optionally, the key unit may be designed to reduce the sensing time of this confirmation when the distance corresponding to the distance signal of the detected object is much smaller than the preset sensing distance setting value. For example, when the preset sensing distance is set to 10mm and the preset sensing time is set to 700ms, if the distance of the detected object is 5mm and the sensing time exceeds 500ms, it can be considered as a valid signal, and it does not need to reach 700ms. The embodiment of the present invention improves the environmental adaptability and anti-interference ability of the key unit, has a humanized design, and can provide users with more effective services.

A non-contact key provided by an embodiment of the present invention includes at least one key unit. The key unit includes a sensing area expansion module, a distance detection module, and a signal processing module. The distance detection module is connected to the signal processing module; wherein, the sensing area expansion module Set to increase the sensing area of the distance detection module; the distance detection module is set to detect the distance from the object in the sensing area to the non-contact button, generate a distance signal and transmit the distance signal to the signal processing module; the signal processing module is set to be based on The distance signal generates the key control signal. The technical solution provided by the embodiment of the present invention enhances the anti-interference ability of the button, improves the use efficiency of the button, and increases the sensing area of the button by setting the sensing area expansion module. The independent design of the sensing distance and/or the sensing time improves the button unit The environment adaptability and anti-interference ability, and the design is humanized, which can provide users with more effective services.

Example two

The embodiment of the present invention provides a contactless key. Based on the first embodiment, at least one key unit of the contactless key provided in the embodiment of the present invention shares a signal processing module.

The embodiment of the present invention provides a non-contact key. FIG. 3 is a schematic structural diagram of a non-contact key provided in the second embodiment of the present invention. Referring to FIG. 3, the non-contact key includes at least one key unit, and the key unit includes A sensing area expansion module 10, a distance detection module 20, and a signal processing module 30, and the distance detection module 20 is connected to the signal processing module 30;

Wherein, the sensing area expansion module 10 is set to adjust the sensing area of the distance detection module 20;

Optionally, the distance detection module 20 includes a time-of-flight sensor. The time-of-flight sensor measures the time required for an object to travel through the medium. Usually, the time-of-flight sensor measures the elapsed time between the reflection of the object and the return to the flight sensor after the wave pulse is emitted. The flight can be measured by converting it into a distance. The distance between the time sensor and the object. The time-of-flight sensor can accurately detect objects in the range of 0mm to 100mm or greater with a resolution of 3mm. The distance detection module 20 meets the needs of increasing the sensing area of the button, enhancing the anti-interference ability of the button, and improving the use efficiency of the button.

Optionally, referring to FIG. 3, the key unit further includes a housing 40, the sensing area expansion module 10 is fixed on the inner surface of the top of the housing 40, the distance detection module 20 is placed in the housing 40 and opposite to the sensing area expansion module 10, and the signal processing The module 30 is placed outside the housing 40, and at least one key unit shares a signal processing module 30, which reduces the number of signal processing modules 30 in the contactless keys, thereby reducing the cost and space occupied by the device.

Optionally, referring to FIG. 3, the sensing area expansion module 10 includes a lens 11, and the lens 11 includes a flat surface and a concave arc surface disposed oppositely, and the flat surface is fixed on the inner surface of the housing 40. The focal length of the lens 11 is adjusted by adjusting the material and/or the radius of the curvature of the lens 11 to adjust the size of the light zone. The smaller the focal length of the lens 11 is, the larger the opening angle of the light rays diverging after passing through the lens 11 is, and the range of the sensing area is increased, that is, the lens 11 is a concave lens. In another solution provided by this embodiment, by adjusting the material and/or radius of the lens 11 to adjust the focal length of the lens 11, the size of the light area can be reduced. At this time, the lens 11 includes a flat surface and a convex curved surface that are arranged oppositely. Fixed on the inner surface of the housing 40, that is, the lens 11 is a convex lens.

Optionally, referring to FIG. 3, the button unit further includes a button state feedback module 50, which is arranged on the outer side of the housing 40 and configured to feed back button state signals, where the button state signals include an indication signal that no object is approaching, an indication signal that an object is approaching , At least one of the indication signal that the object enters the sensing area and the indication signal that the induction is successful; the signal processing module 30 is connected to the button state feedback module 50, and the signal processing module 30 is also set to combine the preset sensing distance and the preset sensing distance according to the distance signal. Set the induction time, and output a control signal to the button state feedback module 50. Optionally, the button state feedback module 50 includes a display device and/or a voice device to visually and/or audibly feedback the sensing state of the button unit to the object.

Optionally, the sensing distance of each key unit can be set separately.

In another solution provided by this embodiment, the sensing distance of the key unit is adjustable, and the parameters can be fixed values after the product leaves the factory. The sensing distance of the object can be individually designed by setting different preset sensing distances through the signal processing module 30. In the occasion where the key interval is large, the sensing distance of the keys can be increased, and in the case where the key interval is small, the sensing distance of the keys can be reduced. In occasions where the elderly and children operate more frequently, the sensing distance of the keys can be increased, and in densely populated places such as office buildings, the sensing distance of the keys can be reduced. The sensing distance can also be parameterized. After the product is delivered for use, the user can make adjustments according to the use situation. The design is humanized and can provide users with more effective services.

In another solution provided by this embodiment, the sensing time of the key unit is adjustable, and the parameters after the product leaves the factory can be fixed values. In occasions with high efficiency requirements, the threshold of the induction time, that is, the preset induction time, can be designed to be slightly smaller, and in situations where the space environment is harsh and easy to interfere, the threshold of the induction time, that is, the preset induction time, can be designed to be slightly larger. The induction time can also be parameterized. After the product is delivered for use, the user can make adjustments according to the use situation. The design is user-friendly and can provide users with more effective services.

The embodiment of the present invention provides a non-contact key including at least one key unit. The key unit includes a sensing area expansion module, a distance detection module, and a signal processing module. The distance detection module is connected to the signal processing module; wherein, the sensing area expansion module Set to increase the sensing area of the distance detection module; the distance detection module is set to detect the distance from the object in the sensing area to the non-contact button, generate a distance signal and transmit the distance signal to the signal processing module; the signal processing module is set to be based on The distance signal generates a key control signal, and at least one key unit shares a signal processing module. While enhancing the anti-interference ability of the keys, adjusting the sensing area of the keys, the design is humanized, which can provide users with more effective services, while reducing the cost of the device and the space occupied.

Example three

The embodiment of the present invention provides a button control method, which is applied to the non-contact button described in any of the above embodiments, and can be executed by a signal processing module. Fig. 4 is a flowchart of a button control method according to the third embodiment of the present invention. Referring to Fig. 4, the method includes: S10 to S20.

S10. Obtain a distance signal through the distance detection module in the non-contact key, where the distance signal is used to indicate the distance from an object located in the sensing area to the non-contact key.

In an embodiment, the non-contact key includes at least one key unit, and the key unit includes a sensing area expansion module, a distance detection module, and a signal processing module, and the distance detection module is connected to the signal processing module. Among them, the sensing area expansion module is set to adjust the sensing area of the distance detection module; the distance detection module is set to detect the distance from the object in the sensing area to the non-contact button and generate a distance signal, which is used to indicate the object in the sensing area The distance to the non-contact button.

S20: Generate a key control signal according to the distance signal.

In one embodiment, the distance detection module is connected to the signal processing module, and the distance detection module detects the distance from the object in the sensing area to the non-contact button and generates a distance signal, and transmits the distance signal to the signal processing module; signal processing module Generate key control signal according to the distance signal.

Optionally, the key control signal is generated according to the distance signal, including:

If it is determined that the distance corresponding to the distance signal is less than or equal to the preset distance, when it is determined that the sensing time of the object reaches the preset time, a first control signal is generated to instruct the target device to perform an action corresponding to the first control signal, where , The preset distance is less than the preset sensing distance, and the preset time is less than the preset sensing time;

If it is determined that the distance corresponding to the distance signal is less than or equal to the preset sensing distance and greater than the preset distance, generating the first control signal when it is determined that the sensing time of the object reaches the preset sensing time;

If it is determined that the distance corresponding to the distance signal is greater than the preset sensing distance, a second control signal is generated to instruct the target device to maintain the original action.

Exemplarily, when the preset sensing distance is set to 10 mm and the preset sensing time is set to 700 ms, the preset distance is 5 mm. If the distance corresponding to the detected object's distance signal is 3mm, that is, the distance corresponding to the distance signal is less than or equal to the preset distance, the signal processing module can generate the first control signal when it is determined that the sensing time of the object reaches the preset time of 500ms , To instruct the target device to perform the corresponding action without reaching the preset sensing time of 700ms. If the distance signal corresponding to the detected object is 8mm, that is, the distance corresponding to the distance signal is less than or equal to the preset sensing distance and greater than the preset distance, then the sensing time of the object needs to reach the preset sensing time of 700ms before the signal processing module The first control signal can be generated to instruct the target device to perform the corresponding action. If the distance corresponding to the distance signal of the detected object is 12mm, that is, when the distance corresponding to the distance signal of the object is greater than the preset sensing distance, the signal processing module generates a second control signal to instruct the target device to maintain the original action.

The technical solution provided by the embodiment of the present invention can realize that when the distance corresponding to the distance signal of the detected object is much smaller than the set value of the preset sensing distance, the sensing time of this confirmation can be reduced, and the environmental adaptability of the key can be improved. Anti-interference ability, humanized design, can provide users with more effective services.

Claims

A non-contact button includes at least one button unit, the at least one button unit includes a sensing area expansion module, a distance detection module, and a signal processing module, the distance detection module being connected to the signal processing module;

Wherein, the sensing area expansion module is configured to adjust the sensing area of the distance detection module;

The distance detection module is configured to detect the distance from an object located in the sensing area to the non-contact button, generate a distance signal, and transmit the distance signal to the signal processing module;

The signal processing module is configured to generate a key control signal according to the distance signal.
The contactless key according to claim 1, wherein the at least one key unit further comprises a housing, the sensing area expansion module is fixed on the inner surface of the top of the housing, and the distance detection module is placed in the housing Inside and opposite to the sensing area expansion module, and the signal processing module is placed in the housing or outside the housing.
3. The non-contact button according to claim 2, wherein the sensing area expansion module includes a lens, the lens includes a flat surface and a concave arc surface disposed oppositely, and the flat surface is fixed to the inner surface of the housing.
The non-contact button according to claim 2, wherein the at least one button unit further comprises a button state feedback module, the button state feedback module is arranged on the outside of the housing and configured to feed back button state signals, wherein, The button state signal includes at least one of the following: an indication signal that no object is approaching, an indication signal that an object is approaching, an indication signal that an object enters the sensing area, and an indication signal that the induction is successful;

The signal processing module is connected to the button state feedback module, and the signal processing module is further configured to output a control signal to the button state feedback module according to the distance signal in combination with a preset sensing distance and a preset sensing time .
The non-contact button according to claim 4, wherein the button state feedback module comprises at least one of the following: a display device and a voice device.
The non-contact button according to claim 1, wherein each button unit is arranged in a one-to-one correspondence with each signal processing module, or the at least one button unit shares a signal processing module.
The non-contact key according to claim 1, wherein the distance detection module includes a time-of-flight sensor.
The contactless key according to claim 1, wherein at least one of the following is adjustable: the sensing distance of the at least one key unit, and the sensing time of the at least one key unit.
A key control method, applied to the non-contact key according to any one of claims 1-8, comprising:

Obtaining a distance signal through the distance detection module in the non-contact key, where the distance signal is used to indicate the distance from an object located in the sensing area to the non-contact key;

A key control signal is generated according to the distance signal.
The button control method according to claim 9, wherein said generating a button control signal according to the distance signal comprises:

When it is determined that the distance corresponding to the distance signal is less than or equal to the preset distance, and when it is determined that the sensing time of the object reaches the preset time, a first control signal is generated to instruct the target device to execute the first control signal. The action corresponding to the control signal, wherein the preset distance is less than the preset sensing distance, and the preset time is less than the preset sensing time;

In the case where it is determined that the distance corresponding to the distance signal is less than or equal to the preset sensing distance and greater than the preset distance, and when it is determined that the sensing time of the object reaches the preset sensing time, the The first control signal;

In a case where it is determined that the distance corresponding to the distance signal is greater than the preset sensing distance, the second control signal is generated to instruct the target device to maintain the original action.