CN108870757A - A kind of controlling device for water heater and control method based on plane gesture identification - Google Patents
A kind of controlling device for water heater and control method based on plane gesture identification Download PDFInfo
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- CN108870757A CN108870757A CN201810692368.7A CN201810692368A CN108870757A CN 108870757 A CN108870757 A CN 108870757A CN 201810692368 A CN201810692368 A CN 201810692368A CN 108870757 A CN108870757 A CN 108870757A
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- water heater
- control
- temperature value
- information
- gesture
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2007—Arrangement or mounting of control or safety devices for water heaters
- F24H9/2014—Arrangement or mounting of control or safety devices for water heaters using electrical energy supply
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/017—Gesture based interaction, e.g. based on a set of recognized hand gestures
Abstract
The invention proposes a kind of controlling device for water heater and control method based on plane gesture identification, including input detection unit, main control unit, water heater control unit and display unit.The water heater of plane gesture control is used in the present invention, replace the scheme of traditional pressure buttons and touch key-press using plane gesture control, space shared by the control panel of water heater can be saved, user gesture is detected using camera sensing device, visual angle is broader, operable area is bigger, without any noise, without mechanical wear, do not need firmly to press can be completed control and it is at low cost be easily installed maintenance, it is not stringent to environmental requirement, can also be accurately identified when finger gets wet, mode of operation novelty is laborsaving, provides better user experience.
Description
Technical field
The invention belongs to technical field of water heaters, control dress more particularly to a kind of water heater based on plane gesture identification
It sets and control method.
Background technique
Usually using pressure buttons or touch key-press as control mode, pressure buttons need to occupy one existing water heater
Fixed panel space, and increasing with water heater function, number of keys also while therewith increase, and which results in control planes
Plate the space occupied is excessive.The use of pressure buttons needs the pressure of certain dynamics.And in key rebound, it can generate certain
Noise；When water mist is larger, the accuracy rate of identification will be greatly reduced touch key-press.In the case that especially finger gets wet, press
Key can not almost identify the operation of finger.
Pressure buttons：Internal elastomeric element is caused to generate elastic deformation and make contact, bullet after release after finger down
Property component recoil to initial position enable connect contact be again off.
Touch key-press：The resistance-capacitance network that capacitance type touch key scheme is made up of the capacitor of a resistance and induction electrode
The charging and discharging time detect capacitance variations brought by human body touch, and pressing and discharging for key is judged with this.
Pressure buttons need mounting arrangement on the control panel, and the water heater more for function then needs very big control
Panel, and due to there are elastomeric element, when operation, need to apply certain pressure.Elastomeric element during rebound usually
Along with the noise rattled away；And touch key-press is stringenter to environmental requirement, is unsuitable to apply in the very high environment of humidity, works as hand
Finger is not usually available after getting wet, and when there are inductance or magnetic strength in the external world, may cause button malfunction.
Summary of the invention
The present invention proposes a kind of controlling device for water heater based on plane gesture identification to solve existing technical problem
And control method.
The purpose of the present invention is achieved through the following technical solutions：A kind of water heater control dress based on plane gesture identification
It sets, including input detection unit, main control unit, water heater control unit and display unit；
The input detection unit captures user in operating area for receiving reflection light of the infrared light supplementing device 2 on object
The images of gestures of formation, and the images of gestures captured is sent to main control unit；
The main control unit first carries out pretreatment and characteristic point to the images of gestures after receiving the images of gestures
It extracts, obtains user gesture information, the user gesture information and pre-stored Pre-defined gesture information are compared, when
User gesture and Pre-defined gesture determine that successfully then user gesture is processed into corresponding control instruction by combination temperature control strategy
It is sent to water heater control unit；The temperature control strategy is that current water heater reality is detected using PT100 temperature sensor
Temperature value, it is described to determine that whether successful user gesture changes for determining set temperature value and variable quantity, works as set temperature value
When higher than actual temperature value, the control instruction is to heat to water heater；
The water heater control unit, for controlling whether water heater is heated according to the control instruction；
The display unit, for the information to user's display water heater.
Further, the input detection unit includes camera sensing device 1 and infrared light supplementing device 2 with optical filter.
Further, the optical filter can only penetrate infrared light identical with 2 wavelength of infrared light supplementing device.
Further, the pretreatment includes that cutting and Threshold segmentation are carried out to images of gestures.
Further, the feature point extraction is to progressively scan to pretreated image data, to each effective
Pixel calculates the pixel in its neighborhood relationships, and calculates the picture of continuous multiple frames, so that it is determined that finger in image out
Coordinate information, number information, finger moving direction and track sets.
Further, the control device further includes storage unit, for Pre-defined gesture information to be stored in advance.
The present invention also proposes a kind of water heater control method based on plane gesture identification, including：
Reflection light of the infrared light supplementing device 2 on object is received, the images of gestures that user is formed in operating area is captured；
Pretreatment and feature point extraction are carried out to the images of gestures, user gesture information is obtained, by the user gesture information
It is compared with pre-stored Pre-defined gesture information, when user gesture and Pre-defined gesture determine successfully, then combination temperature
User gesture is processed into corresponding control instruction by control strategy；The temperature control strategy is using PT100 temperature sensor
Current water heater actual temperature value is detected, it is described to determine successful user gesture for determining whether set temperature value changes and become
Change amount, when set temperature value is higher than actual temperature value, the control instruction is to heat to water heater；
For display screen to the information of user's display water heater, the information is actual temperature value and set temperature value；
Control whether water heater is heated according to the control instruction.
Further, the pretreatment includes that cutting and Threshold segmentation are carried out to images of gestures.
Further, the feature point extraction is to progressively scan to pretreated image data, to each effective
Pixel calculates the pixel in its neighborhood relationships, and calculates the picture of continuous multiple frames, so that it is determined that finger in image out
Coordinate information, number information, finger moving direction and track sets.
The water heater that plane gesture control is used in the present invention, traditional pressure buttons are replaced using plane gesture control
With the scheme of touch key-press, space shared by the control panel of water heater can be saved, detects user using camera sensing device
Gesture, visual angle is broader, and operable area is bigger, and without any noise, no mechanical wear does not need firmly to press control can be completed
Make and it is at low cost be easily installed maintenance, it is not stringent to environmental requirement, can also be accurately identified when finger gets wet, mode of operation
It is novel laborsaving, better user experience is provided.
Detailed description of the invention
Fig. 1 is a kind of controlling device for water heater structural block diagram based on plane gesture identification；
Fig. 2 is picture catching schematic diagram；
Fig. 3 is 2 method flow diagram of specific embodiment.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
In embodiment, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, shall fall within the protection scope of the present invention.
Embodiment 1
In conjunction with Fig. 1-Fig. 2, the present invention proposes a kind of controlling device for water heater based on plane gesture identification, including input detection list
Member, main control unit, water heater control unit and display unit；
The input detection unit captures user in operating area for receiving reflection light of the infrared light supplementing device 2 on object
The images of gestures of formation, and the images of gestures captured is sent to main control unit；The input detection unit includes band
There are the camera sensing device 1 and infrared light supplementing device 2 of optical filter.The optical filter can only penetrate identical as 2 wavelength of infrared light supplementing device
Infrared light.The operating area 3 of water heater is projected on wall plane by operating area projection device 4, which uses
Laser projection goes out a visible static pattern, the content of pattern by the pattern that the film being mounted on the laser equipment is printed and
It determines；Interference can be eliminated by increasing infrared light supplementing device, improve the brightness of finger and reduce with this calculation amount of main control chip.
The main control unit, main control unit uses embedded chip, after receiving the images of gestures, first to described
Images of gestures carry out pretreatment and feature point extraction, obtain user gesture information, by the user gesture information be stored in advance
Pre-defined gesture information compare, when user gesture and Pre-defined gesture determine successfully, then combination temperature control strategy general
User gesture is processed into corresponding control instruction and is sent to water heater control unit；Otherwise it is assumed that determining failure, figure is reacquired
Picture；The temperature control strategy is that current water heater actual temperature value is detected using PT100 temperature sensor, described to determine successfully
User gesture for determining whether set temperature value changes and variable quantity, when set temperature value is higher than actual temperature value, institute
Stating control instruction is to heat to water heater, when set temperature value is less than or equal to actual temperature value, the control instruction
Not heated to water heater；The pretreatment includes that cutting and Threshold segmentation are carried out to images of gestures.The characteristic point mentions
It is taken as progressively scanning pretreated image data, the pixel in its neighborhood relationships is calculated to each valid pixel,
And the picture of continuous multiple frames is calculated, so that it is determined that out in image the coordinate information of finger, number information, finger movement
Direction and track sets.
The water heater control unit, for controlling whether water heater is heated according to the control instruction；
The display unit, for the information to user's display water heater.
The control device further includes storage unit, for Pre-defined gesture information to be stored in advance.
The present invention also proposes a kind of water heater control method based on plane gesture identification, including：
Reflection light of the infrared light supplementing device 2 on object is received, the images of gestures that user is formed in operating area is captured；Water heater
Operating area 3 be projected on wall plane by operating area projection device 4, which goes out one using laser projection can
The static pattern seen, the content of pattern are determined by the pattern that the film being mounted on the laser equipment is printed；
Pretreatment and feature point extraction are carried out to the images of gestures, user gesture information is obtained, by the user gesture information
It is compared with pre-stored Pre-defined gesture information, when user gesture and Pre-defined gesture determine successfully, then combination temperature
User gesture is processed into corresponding control instruction by control strategy, otherwise determines failure, reacquires image；The temperature control
Strategy is described to determine that successful user gesture is used for detect current water heater actual temperature value using PT100 temperature sensor
Whether decision set temperature value changes and variable quantity, and when set temperature value is higher than actual temperature value, the control instruction is pair
Water heater is heated, when set temperature value be less than or equal to actual temperature value when, the control instruction be not to water heater into
Row heating, reacquires image；
For display screen to the information of user's display water heater, the information is actual temperature value and set temperature value；
Control whether water heater is heated according to the control instruction.
The pretreatment includes that cutting and Threshold segmentation are carried out to images of gestures.
The feature point extraction is to progressively scan to pretreated image data, calculates it to each valid pixel
Pixel in neighborhood relationships, and the picture of continuous multiple frames is calculated, so that it is determined that out the coordinate information of finger in image,
The moving direction and track sets of number information, finger.
The water heater using plane gesture control proposed in the present invention, by the click of the finger on metope and sliding come
Water heater is controlled, the volume of control panel can be greatly reduced；Any noise will not be generated when control, no mechanical wear uses the longevity
Life length, without firmly pressing, and mode of operation is novel, and high sensitivity will not influence to identify finger gets wet.
Embodiment 2
In conjunction with Fig. 3, the water heater of mode temperature adjustment is hit using single indication, uses OV7620 camera and the narrow band filter of 808nm
As input detection unit, infrared light supplementing device externally emits an infrared wordline for 808nm wavelength；The platform has used ST company
Stm32f407 is as main control unit chip；Pt100 is added in such a way that relay adds resistance wire in water heater control unit
Thermocouple sensor detects water temperature；Display unit shows set temperature value and reality by the way of triode drive digital tube
Border temperature value.
1, system hardware initialization：
The initialization procedure includes：Ov7620 camera is initialized, PWM output is used to drive the infrared light filling of 808nm all the way for configuration
Device, initialization are used to control the GPIO of relay, and initialization is used to the GPIO of drive digital tube, and initialization is used to detect PT100
The analog-digital converter etc. of temperature simulation amount；
2, obtain image：
Main control chip controls ov7620 camera and obtains image, and is stored in the memory of main control chip；
3, image preprocessing：
The visual angle that can capture due to camera needs exist for being cut according to actual operating area size than broader
Figure, can greatly reduce the image data of processing, here with 120*160 having a size of screenshot size, using 150 gray values as threshold
Value carries out binary conversion treatment to image；
4, feature point extraction：
The image data of 120*160 size Jing Guo binary conversion treatment is progressively scanned, according to the relationship between pixel,
Find out the finger point coordinate position in image.
5, key gesture identification：
Check the finger found out point coordinate whether be located at define by key range, if finger point fall in key 1 include
In range, then finger down key 1 is determined, set temperature value increases by 1, otherwise checks whether finger point is located at the packet of key 2
Containing in range, if it is determine finger down key 2, set temperature value subtracts 1, otherwise it is assumed that finger do not press by
Key, setting value do not change；
6, obtain actual temperature value：
Detect the actual temperature information passed back by PT100；
7, show information：
Show set temperature value and actual temperature value respectively using charactron；
8, water heater computer heating control：
When set temperature value is higher than actual temperature value, needs to heat water temperature, corresponding control is generated by main control chip
Instruction notification water heater control unit connects relay, connects resistance wire and heats to water temperature.
Above to a kind of controlling device for water heater and control method based on plane gesture identification provided by the present invention, into
It has gone and has been discussed in detail, used herein a specific example illustrates the principle and implementation of the invention, the above implementation
The explanation of example is merely used to help understand method and its core concept of the invention；Meanwhile for the general technology people of this field
Member, according to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion this explanation
Book content should not be construed as limiting the invention.
Claims (9)
1. a kind of controlling device for water heater based on plane gesture identification, which is characterized in that including input detection unit, master control list
Member, water heater control unit and display unit；
The input detection unit, for receiving infrared light supplementing device（2）Reflection light on object captures user in operating space
The images of gestures that domain is formed, and the images of gestures captured is sent to main control unit；
The main control unit first carries out pretreatment and characteristic point to the images of gestures after receiving the images of gestures
It extracts, obtains user gesture information, the user gesture information and pre-stored Pre-defined gesture information are compared, when
User gesture and Pre-defined gesture determine that successfully then user gesture is processed into corresponding control instruction by combination temperature control strategy
It is sent to water heater control unit；The temperature control strategy is that current water heater reality is detected using PT100 temperature sensor
Temperature value, it is described to determine that whether successful user gesture changes for determining set temperature value and variable quantity, works as set temperature value
When higher than actual temperature value, the control instruction is to heat to water heater；
The water heater control unit, for controlling whether water heater is heated according to the control instruction；
The display unit, for the information to user's display water heater.
2. the apparatus according to claim 1, it is characterised in that：The input detection unit includes the camera shooting with optical filter
Head sensor（1）And infrared light supplementing device（2）.
3. the apparatus of claim 2, it is characterised in that：The optical filter can only penetrate and infrared light supplementing device（2）Wave
Long identical infrared light.
4. the apparatus according to claim 1, it is characterised in that：The pretreatment includes that cutting and threshold are carried out to images of gestures
Value segmentation.
5. the apparatus according to claim 1, it is characterised in that：The feature point extraction is to pretreated image data
It is progressively scanned, the pixel in its neighborhood relationships is calculated to each valid pixel, and count to the picture of continuous multiple frames
Calculate, so that it is determined that out in image the coordinate information of finger, number information, finger moving direction and track sets.
6. device according to any one of claims 1-5, it is characterised in that：The control device further includes that storage is single
Member, for Pre-defined gesture information to be stored in advance.
7. a kind of water heater control method based on plane gesture identification, which is characterized in that including：
Receive infrared light supplementing device（2）Reflection light on object captures the images of gestures that user is formed in operating area；
Pretreatment and feature point extraction are carried out to the images of gestures, user gesture information is obtained, by the user gesture information
It is compared with pre-stored Pre-defined gesture information, when user gesture and Pre-defined gesture determine successfully, then combination temperature
User gesture is processed into corresponding control instruction by control strategy；The temperature control strategy is using PT100 temperature sensor
Current water heater actual temperature value is detected, it is described to determine successful user gesture for determining whether set temperature value changes and become
Change amount, when set temperature value is higher than actual temperature value, the control instruction is to heat to water heater；
For display screen to the information of user's display water heater, the information is actual temperature value and set temperature value；
Control whether water heater is heated according to the control instruction.
8. according to the method described in claim 7, it is characterized in that：The pretreatment includes that cutting and threshold are carried out to images of gestures
Value segmentation.
9. according to the method described in claim 7, it is characterized in that：The feature point extraction is to pretreated image data
It is progressively scanned, the pixel in its neighborhood relationships is calculated to each valid pixel, and count to the picture of continuous multiple frames
Calculate, so that it is determined that out in image the coordinate information of finger, number information, finger moving direction and track sets.
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| CN109724263A (en) * | 2019-02-18 | 2019-05-07 | 海信(广东)厨卫系统有限公司 | A kind of control device, water heater and its control method |
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