CN110719672A - Active infrared type touch controller, light control system and method - Google Patents
Active infrared type touch controller, light control system and method Download PDFInfo
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C23/00—Non-electrical signal transmission systems, e.g. optical systems
- G08C23/04—Non-electrical signal transmission systems, e.g. optical systems using light waves, e.g. infrared
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/96—Touch switches
- H03K17/962—Capacitive touch switches
Abstract
The invention discloses an active infrared touch controller, which comprises a shell, wherein an infrared transmitting module, an infrared receiving module, a control module, an equipment driving module and a power supply module for supplying power are arranged in the shell, the control module comprises an initialization unit and a work control unit, the infrared transmitting module transmits infrared light to a working surface to generate reflected light, the infrared receiving module receives the reflected light and generates an infrared signal to be transmitted to the control module, and the initialization unit generates and records a reference value alpha according to the infrared signal; the work control unit obtains a control signal by comparing the reference value alpha with the first sampling value alpha t and controls the equipment driving module to work; the invention also discloses a light control system and an active infrared touch control method; the invention has self-adaptive function, can adapt to mirrors with different thicknesses, and can meet the requirement of using touch behind glass decorations with different transparencies.
Description
Technical Field
The invention relates to the technical field of touch control, in particular to an active infrared touch controller, a light control system and a light control method.
Background
The mirror is an essential article for every family, is usually arranged in a bathroom or a dressing table, and the traditional mirror has single function, has no functional improvement except for being decorated by a higher-grade outer frame, and has insufficient product innovation. Along with modern household products are more and more intelligent and people experience more and more abundant demands to the house ornamentation, the mirror also needs to enrich the function and promote the grade of the mirror through functional innovation so as to adapt to the future market demand. For example, the mirror cooperates the light illumination that is fit for, can reach more ideal life and experience, simultaneously for pleasing to the eye, can make the partial structure of mirror surface into touch button and realize the control to light many times, pleasing to the eye technological sense again promptly, receive liking of user and promoted.
At present, chips manufactured by using a capacitance principle are mainly used in the market for touch, and the main problems are that the functions are abnormal due to the fact that capacitance induction is easily interfered by the outside, and the touch screen is difficult to adapt to mirror surfaces or glass with different thicknesses.
Disclosure of Invention
In view of the above, the present invention provides an active infrared touch controller and a light control system to solve the above technical problems.
An active infrared touch controller comprises a shell, wherein an infrared transmitting module, an infrared receiving module, a control module, an equipment driving module and a power supply module for supplying power are arranged in the shell, the control module comprises an initialization unit and a work control unit, during power-on initialization, the infrared transmitting module transmits infrared light to a working surface to generate reflected light, the infrared receiving module receives the reflected light and generates an infrared signal to be transmitted to the control module, and the initialization unit generates and records a reference value alpha according to the infrared signal;
during normal work, the infrared transmitting module emits infrared light to a working surface to generate reflected light, the infrared receiving module receives the reflected light and generates an infrared signal to be transmitted to the control module, the work control unit generates a first sampling value alpha t according to the infrared signal, the work control unit obtains a control signal by comparing the reference value alpha with the first sampling value alpha t, and the control device driving module works.
Preferably, the control module further comprises an anti-interference unit, during normal operation, when the infrared emission module does not work, the infrared receiving module receives interference infrared light and generates an infrared signal to transmit to the control module when the infrared emission module is not started, the anti-interference unit generates a second sampling value beta according to the infrared signal, and the anti-interference unit obtains a control signal by comparing alpha and the second sampling value beta to control the infrared emission module to sleep or normally operate.
Preferably, the infrared receiving module performs sampling after the infrared transmitting module is started for 30-70 μ s.
Preferably, the emission period of the infrared emission module is 50ms to 150 ms.
Preferably, the sampling period of the infrared receiving module is 0.1 ms-5 ms.
The light control system comprises a glass plate, the active infrared touch controller is mounted on one side of the glass plate, the equipment driving module is a light driving module, the light emitting direction of the infrared emitting module faces the other side of the glass plate, and the infrared receiving module receives reflected infrared light on the other side of the glass plate.
Preferably, the light driving module includes a switch unit, a brightness adjusting unit and a color temperature adjusting unit.
The invention also discloses an active infrared touch control method, which comprises the following steps:
100. mounting an active infrared type touch controller on one side of a glass plate;
200. the infrared receiving module samples the totally reflected infrared light and generates an infrared signal;
300. generating a reference value alpha according to the infrared signal in the step 200 to finish initialization;
400. the infrared transmitting module is started, and the infrared receiving module samples to obtain an infrared signal;
500. generating a first sampling value alpha t according to the infrared signal in the step 400, and recording the first sampling value alpha t as an effective signal when alpha t is more than alpha + delta 1;
when alpha t is less than alpha + delta 1, recording as an invalid signal, and delta 1 is an effective signal deviation value;
600. converting the effective signal into a control signal;
700. and (5) circulating the steps 400-600.
An active infrared touch control method comprises the following steps:
100. attaching an active infrared touch controller to one side of a glass plate
200. The infrared receiving module samples the totally reflected infrared light and generates an infrared signal;
300. generating a reference value alpha according to the infrared signal in the step 200 to finish initialization;
400. the infrared transmitting module is not started, and the infrared receiving module carries out infrared signal sampling;
500. obtaining a second sampling value beta according to the infrared signal in the step 401, and returning to the step 400 when beta is larger than alpha + delta 2; when beta is less than or equal to alpha + delta 2, the infrared emission module is periodically started, and delta 2 is an infrared interference deviation value;
600. the infrared transmitting module is started, and the infrared receiving module samples to obtain an infrared signal;
700. generating a first sampling value alpha t according to the infrared signal in the step 600, recording the first sampling value alpha t as an effective signal when alpha t is more than alpha + delta 1, and entering the step 800;
when alpha t is less than or equal to alpha + delta 1, recording as an invalid signal and entering the step 400, wherein delta 1 is a valid signal deviation value;
800. converting the effective signal into a control signal;
900. after outputting the control signal, entering step 400;
preferably, in step 800, the specific step of converting the valid signal into the control signal includes:
801. recording the number of times of the effective signals, accumulating and entering the step 600;
802. and (6) circulating the steps 600-801, and generating different control signals according to the effective signal times.
Preferably, δ 2 ≦ δ 1.
Preferably, the infrared receiving module performs sampling after the infrared transmitting module is started for 30-70 μ s.
Preferably, the emission period of the infrared emission module is 50ms to 150 ms.
Preferably, the sampling period of the infrared receiving module is 0.1 ms-5 ms.
Preferably, in step 800, the generated control signal is used for light control.
Preferably, in step 800, the light control includes on-off, brightness and color temperature adjustment.
The invention has the technical effects that:
the active infrared touch controller, the light control system and the method can be applied to the touch lamps of mirrors and glass, and effectively solve the problem that the capacitive sensing touch controller in the prior art is easily interfered by the external environment; and because the thickness of the mirror on the market is not standardized at present, the invention has the self-adaptive function, can adapt to the mirrors with different thicknesses, and can meet the requirement of using touch behind glass decorations with different transparencies.
Drawings
Embodiments of the invention are described below with reference to the accompanying drawings, in which:
fig. 1 is a block diagram of an active infrared touch controller according to the present embodiment.
Fig. 2 is a schematic structural diagram of the light control system of the present embodiment.
Fig. 3 is a circuit diagram of the light control system of the present embodiment.
Fig. 4 is a flowchart of the active infrared touch control method (without external infrared interference resistance) according to this embodiment.
Fig. 5 is a flowchart of the active infrared touch control method (setting resistance to external infrared interference) according to this embodiment.
Detailed Description
Specific embodiments of the present invention will be described in further detail below based on the drawings. It should be understood that the description herein of embodiments of the invention is not intended to limit the scope of the invention.
As shown in fig. 1 to 5, the active infrared touch controller of the present embodiment includes a housing 10, and an infrared emitting module 20, an infrared receiving module 30, a control module 40, an apparatus driving module 500, and a power module 60 for supplying power are disposed in the housing 100. During normal operation, the infrared emitting module 20 emits infrared light to a working surface to generate reflected light, the infrared receiving module 30 receives the reflected light and generates an infrared signal to be transmitted to the control module 40, the operation control unit 40 generates a first sampling value α t according to the infrared signal, the operation control unit 40 obtains a control signal by comparing the reference value α with the first sampling value α t, and the control device driving module 50 is controlled to operate. The control module 40 further includes an anti-interference unit 40, during normal operation, the infrared receiving module 30 receives interference infrared light and generates an infrared signal to transmit to the control module 40 when the infrared transmitting module 200 is not turned on, the anti-interference unit 403 generates a second sampling value β according to the infrared signal, and the anti-interference unit 40 obtains a control signal by comparing the reference value α with the second sampling value β, and controls the infrared transmitting module 200 to sleep or operate normally.
During normal operation, after the infrared transmitting module 200 is started for 30-70 μ s, the infrared receiving module 30 performs sampling. The emission period of the infrared emission module 20 is 50ms to 150 ms. The sampling period of the infrared receiving module 30 is 0.1ms to 5 ms.
The invention focuses on the improvement of the control module, the control module 40 comprises an initialization unit 41 and a work control unit 42, the initialization unit 41 sets a new reference value for different work surfaces, thereby being suitable for different working surfaces, the active infrared touch controller of the embodiment is generally applied to a glass plate with light transmission effect, the mirror can have various effects such as frosting and the like, can also be provided with a transparent installation area and the like, has a larger application range, and in order to adapt to different application environments, the control module of the embodiment, during power-up initialization, the infrared emission module 20 emits infrared light to the working surface to generate reflected light, the infrared receiving module 30 receives the reflected light and generates an infrared signal, and the infrared signal is transmitted to the control module 40, and the initialization unit 41 generates and records the reference value α according to the infrared signal.
The control module controls the infrared transmitting tube of the infrared transmitting module 20 to be started and to transmit infrared light, the infrared receiving module 30 starts to work, receives infrared signals, amplifies the signals through a primary amplification circuit, and transmits the signals to the control module 40, generally, the control module 40 adopts a single chip microcomputer, and specific signals are amplified and then transmitted to an input pin of the single chip microcomputer. After the singlechip serving as the control module performs AD conversion, a value can be obtained and recorded as alpha. After the initial value is obtained, the infrared transmitting tube and the receiving tube amplifying circuit stop working. The above work flow is defined as a work cycle, after each work, the time is delayed by 50-150 ms, and then the next work flow is performed, and the infrared emission module 200 periodically works.
When comparing the reference value α with the first sampling value α t, in order to accurately determine whether the touch operation is a valid signal, the reference value α needs to be compared with the first sampling value α t after adding the valid signal deviation value δ 1. When the reference value alpha and the second sampling value beta are compared, in order to accurately judge whether the infrared component existing outside causes the false triggering of the product, the reference value alpha needs to be compared with the second sampling value beta after being added with the infrared interference deviation value delta 2. To achieve an effectively stable operating condition, δ 2 is generally less than or equal to δ 1.
The above-mentioned reference value α can be directly used as the threshold of the effective signal, but in actual use, in order to improve accuracy, when the product is mounted on the glass plate 2000 (the transparent mounting area of the mirror surface), the working process is automatically repeated for a plurality of times, for example, 10 times after being powered on, and α is obtained1，α2……α10And weighted average is carried out to obtain alphaavgAs a reference value. The physical significance of this value is that the amount of light that is totally reflected back by the infrared light through the glass plate 2000, and the value that is reflected back by the glass that is not shielded can be obtained by measuring the collected signal. This value is related to the thickness of the glass plate 2000, the installation distance between the infrared emission tube and the glass plate 2000, the material, and the like.
After the infrared transmitting tube is started for 30-70 mu s, the infrared receiving module 30 starts to work, so that more effective signals can be received conveniently.
After the self-adaption of the power-on initialization is completed, the product enters a normal working mode. Under this mode, the during operation of product has an anti external infrared interference's process, and anti-interference in-process, the product can carry out following operation: before the infrared transmitting tube is started and emits infrared light, the infrared receiving circuit starts to work firstly, an AD value is collected once, and the value is recorded as a second sampling value beta. If beta > alphaavgAnd + delta 2, the outside is considered to have infrared interference, and in the working period, the infrared transmitting tube is not opened, and the infrared working circuit is closed. Delaying for 50-150 ms, and entering the next period. If beta is less than or equal to alphaavgAnd + delta 2, considering that no external infrared interference exists, starting the infrared transmitting tube for 30-70 mu s, simultaneously acquiring the AD value again, recording the AD value as alpha t, and recording an effective signal once if the alpha t is more than alpha avg + delta 1. When the light is actually controlled, if the signals received in the two periods are valid signals and the third period does not receive valid signals, the fact that the user executes one-time short touch operation is judged, and the switch and the brightness are controlled. If the effective signals are received in three or more continuous periods, judging that the user executes one-time long touch operation, controlling the color temperature of the lamplight until the signals received in a certain period are invalid signals or interference signals, and judging that the user exits the long touch operation.
The device driving module 50 may be any device that needs to be controlled by touch, specifically, the active infrared touch controller of this embodiment may be a touch lamp controller applied to a mirror and glass, and of course, the active infrared touch controller may be manufactured and sold separately, or sold together with a glass (mirror), or sold together with a device.
As shown in fig. 2, the light control system of this embodiment includes a glass plate 2000, the device driving module attached to one side of the glass plate is a light driving module 1000, the light emitting direction of the infrared emitting module 20 faces to the other side of the glass plate, the infrared receiving module 30 receives the reflected infrared light from the other side of the glass plate 2000, and the control circuit diagram of this embodiment is shown in fig. 3. In order to enrich the functions, the light driving module comprises a switch unit, a brightness adjusting unit and a color temperature adjusting unit.
The active infrared touch control method of the embodiment does not set an external infrared interference resisting process, and comprises the following steps:
100. mounting an active infrared type touch controller on one side of a glass plate;
200. the infrared receiving module samples the totally reflected infrared light and generates an infrared signal;
300. generating a reference value alpha according to the infrared signal in the step 200 to finish initialization;
400. the infrared transmitting module is started, and the infrared receiving module samples to obtain an infrared signal;
500. generating a first sampling value alpha t according to the infrared signal in the step 400, and recording the first sampling value alpha t as an effective signal when alpha t is more than alpha + delta 1;
when alpha t is less than or equal to alpha + delta 1, recording as an invalid signal, and delta 1 is a valid signal deviation value;
600. converting the effective signal into a control signal;
700. and (5) circulating the steps 400-600.
In step 600, the specific steps of converting the valid signal into the control signal include:
601. recording the number of times of effective signals and accumulating, and entering step 400;
602. and circulating the steps 400-601, and generating different control signals according to the effective signal times.
Specifically, if the signals received in the two periods are both effective signals, and the signals in the third period are not effective signals, and the signals in the period are judged to be interference signals, it is judged that the user performs one-time short touch operation, and switching and brightness adjustment are achieved. If the effective signals are received in three or more continuous periods, judging that the user executes one-time long touch operation to realize color temperature adjustment, and judging that the user exits the long touch operation until the signals received in a certain period are invalid signals or interference signals.
Another active infrared touch control method of this embodiment has a process of resisting external infrared interference, and includes the following steps:
100. mounting an active infrared type touch controller on one side of a glass plate;
200. the infrared receiving module samples the totally reflected infrared light and generates an infrared signal;
300. generating a reference value alpha according to the infrared signal in the step 200 to finish initialization;
400. the infrared transmitting module is not started, and the infrared receiving module carries out infrared signal sampling;
500. obtaining a second sampling value beta according to the infrared signal in the step 401, and returning to the step 400 when beta is larger than alpha + delta 2; when beta is less than or equal to alpha + delta 1, the infrared emission module is periodically started;
600. the infrared transmitting module is started, and the infrared receiving module samples to obtain an infrared signal;
700. generating a first sampling value alpha t according to the infrared signal in the step 600, recording the first sampling value alpha t as an effective signal when alpha t is more than alpha + delta 1, and entering the step 800;
when alpha t is less than or equal to alpha + delta 1, recording as an invalid signal and entering the step 400, wherein delta 1 is a valid signal deviation value;
801. recording the number of times of the effective signals, accumulating and entering the step 600;
802. the steps 600-801 are circulated, and different control signals are generated according to the number of times of the effective signals;
900. after outputting the control signal, the process proceeds to step 400.
In the above process, after the infrared transmitting module is started for 30 μ s to 70 μ s, specifically 50 μ s, the infrared receiving module performs sampling, the transmitting period of the infrared transmitting module is 50ms to 150ms, specifically 100ms, the sampling period of the infrared receiving module is 0.1ms to 5ms, specifically 1 ms.
The reference value α may be directly used as the effective signal threshold, and in this embodiment, in order to improve the accuracyAfter power-up, the working process is automatically repeated for a plurality of times, for example, 10 times, to obtain alpha1，α2……α10And weighted average is carried out to obtain alphaavgAs a reference value.
Considering that the existence of active infrared is easily influenced by an external light source with infrared components (such as an incandescent lamp), the infrared interference prevention function is performed in product software, the product stability is improved, and the defect of active infrared induction is fundamentally eliminated.
In conclusion, the touch type lamp controller applicable to the mirror and the glass is designed according to the principle that the active infrared anti-interference performance is strong, the problem that the capacitive sensing touch controller is easily interfered by the external environment is effectively solved, and meanwhile, the thickness of the mirror in the current market is not standardized, so that the product has a self-adaptive function, can adapt to the mirrors with different thicknesses, and can meet the requirement of touch after the glass with different transparencies is decorated.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the scope of the present invention, and any modifications, equivalents or improvements that are within the spirit of the present invention are intended to be covered by the following claims.
Claims (13)
1. An active infrared touch controller comprises a shell (10), wherein an infrared transmitting module (20), an infrared receiving module (30), a control module (40), an equipment driving module (50) and a power supply module (60) for supplying power are arranged in the shell (10),
the control module (40) is characterized by comprising an initialization unit (41) and an operation control unit (42), during power-on initialization, the infrared emission module (20) emits infrared light to a working surface to generate reflected light, the infrared receiving module (30) receives the reflected light and generates an infrared signal to be transmitted to the control module (40), and the initialization unit (41) generates and records a reference value alpha according to the infrared signal;
during normal work, the infrared emitting module (20) emits infrared light to a working surface to generate reflected light, the infrared receiving module (30) receives the reflected light and generates an infrared signal to be transmitted to the control module (40), the work control unit (42) generates a first sampling value alpha t according to the infrared signal, the work control unit (42) obtains a control signal by comparing the reference value alpha with the first sampling value alpha t, and the control device driving module (50) is controlled to work.
2. The active infrared touch controller according to claim 1, wherein the control module (40) further comprises an anti-interference unit (43), during normal operation, the infrared transmitting module (20) does not operate, the infrared receiving module (30) receives interference infrared light and generates an infrared signal to be transmitted to the control module (40) when the infrared transmitting module (20) is not turned on, the anti-interference unit (43) generates a second sampling value β according to the infrared signal, and the anti-interference unit (43) obtains a control signal by comparing α and the second sampling value β, and controls the infrared transmitting module (20) to sleep or operate normally.
3. The active infrared touch controller of claim 1, wherein the infrared receiving module (30) performs sampling after the infrared transmitting module (20) is turned on for 30-70 μ s during normal operation.
4. Active infrared touch controller according to any of claims 1 to 3, characterized in that the emission period of the infrared emission module (20) is between 50ms and 150 ms.
5. The active infrared touch controller of claim 4, wherein the infrared receiving module (300) has a sampling period of 0.1ms to 5 ms.
6. A light control system, comprising a glass plate (2000), the active infrared touch controller (1000) according to any claim from 1 to 4 attached to one side of the glass plate, the device driving module (50) is a light driving module, the light emitting direction of the infrared emitting module (20) faces to the other side of the glass plate (2000), and the infrared receiving module (30) receives the reflected infrared light on the other side of the glass plate (2000).
7. A light control system according to claim 6, characterized in that the light driving module (50) comprises a switching unit, a dimming unit and a toning unit.
8. An active infrared touch control method is characterized by comprising the following steps:
100. attaching an active infrared touch controller to one side of a glass plate
200. The infrared receiving module samples the totally reflected infrared light and generates an infrared signal;
300. generating a reference value alpha according to the infrared signal in the step 200 to finish initialization;
400. the infrared transmitting module is started, and the infrared receiving module samples to obtain an infrared signal;
500. generating a first sampling value alpha t according to the infrared signal in the step 400, and recording the first sampling value alpha t as an effective signal when alpha t is more than alpha + delta 1;
when alpha t is less than or equal to alpha + delta 1, recording as an invalid signal, and delta 1 is a valid signal deviation value;
600. converting the effective signal into a control signal;
700. and (5) circulating the steps 400-600.
9. An active infrared touch control method is characterized by comprising the following steps:
100. mounting an active infrared type touch controller on one side of a glass plate;
200. the infrared receiving module samples the totally reflected infrared light and generates an infrared signal;
300. generating a reference value alpha according to the infrared signal in the step 200 to finish initialization;
400. the infrared transmitting module is not started, and the infrared receiving module carries out infrared signal sampling;
500. obtaining a second sampling value beta according to the infrared signal in the step 401, and returning to the step 400 when beta is larger than alpha + delta 2; when beta is less than or equal to (alpha + delta 2), the infrared emission module is periodically started, and delta 2 is an infrared interference deviation value;
600. the infrared transmitting module is started, and the infrared receiving module samples to obtain an infrared signal;
700. generating a first sampling value alpha t according to the infrared signal in the step 600, recording the first sampling value alpha t as an effective signal when alpha t is more than alpha + delta 1, and entering the step 800;
when alpha t is less than or equal to alpha + delta 1, recording as an invalid signal and entering the step 400, wherein delta 1 is a valid signal deviation value;
800. converting the effective signal into a control signal;
900. after outputting the control signal, the process proceeds to step 400.
10. The active infrared touch control method of claim 9, wherein the step 800 of converting the valid signal into the control signal comprises:
801. recording the number of times of the effective signals, accumulating and entering the step 600;
802. and (6) circulating the steps 600-801, and generating different control signals according to the effective signal times.
11. The active infrared touch control method of claim 9, wherein δ 2 ≦ δ 1.
12. The active infrared touch control method of any of claims 9 to 11, wherein the control signal generated in step 800 is used for light control.
13. The active infrared touch control method of any one of claims 9 to 11, wherein in step 800, the light control comprises on-off, brightness and color temperature adjustment.
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| US20190069380A1 (en) * | 2017-08-29 | 2019-02-28 | Abl Ip Holding Llc | Methods for operating mechatronic transforming luminaire swarms |
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