CN208240049U - A kind of plane gesture control device of water heater - Google Patents

Abstract

The utility model proposes a kind of plane gesture control devices of water heater, camera sensing device 1, infrared light supplementing device 2, image processor and water heater controller including having optical filter；The water heater of plane gesture control is used in the utility model, 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

A kind of plane gesture control device of water heater

Technical field

The utility model belongs to technical field of water heaters, more particularly to a kind of plane gesture control device of water heater.

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 utility model proposes a kind of plane gesture control device of water heater to solve existing technical problem.

The purpose of this utility model is achieved through the following technical solutions: a kind of plane gesture control device of water heater, packet Include camera sensing device 1, infrared light supplementing device 2, image processor and water heater controller with optical filter；Described image processing Pre-defined gesture information has been stored in advance in device；

The camera sensing device with optical filter receives reflection light of the infrared light supplementing device on object, captures user In the images of gestures that operating area is formed, and the images of gestures captured is sent to image processor；At described image After reason device receives the images of gestures, pretreatment and feature point extraction first are carried out to the images of gestures, obtain user gesture Information compares the user gesture information and pre-stored Pre-defined gesture information, when user gesture and predefines Gesture determines that successfully then user gesture is processed into corresponding control instruction and is sent to water heater control by combination temperature control strategy Device；The water heater controller controls whether water heater is heated according to the control instruction.

Further, the temperature control strategy specifically:

Current water heater actual temperature value is detected using PT100 temperature sensor, it is described to determine that successful user gesture is used In determining whether set temperature value changes and variable quantity, when set temperature value is higher than actual temperature value, the control instruction is Water heater is heated.

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 display, and the display is used for the letter to user's display water heater Breath, the information of the water heater includes actual temperature value and set temperature value.

Further, the optical filter can only penetrate infrared light identical with 2 wavelength of infrared light supplementing device.

The water heater that plane gesture control is used in the utility model, traditional pressure is replaced using plane gesture control The scheme of key and touch key-press can save space shared by the control panel of water heater, be detected using camera sensing device User gesture, visual angle is broader, and operable area is bigger, and without any noise, no mechanical wear, not needing firmly to press can be complete At 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, operation Mode novelty is laborsaving, provides better user experience.

Detailed description of the invention

Fig. 1 is a kind of plane gesture control device structural block diagram of water heater；

Fig. 2 is picture catching schematic diagram；

Fig. 3 is 2 method flow diagram of specific embodiment.

Specific embodiment

The following is a combination of the drawings in the embodiments of the present utility model carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

Embodiment 1

In conjunction with Fig. 1-Fig. 2, the utility model proposes a kind of plane gesture control devices of water heater, including have optical filter Camera sensing device 1, infrared light supplementing device 2, image processor and water heater controller；It is stored in advance in described image processor Pre-defined gesture information；

The camera sensing device 1 with optical filter receives reflection light of the infrared light supplementing device 2 on object, captures and uses The images of gestures that family is formed in operating area, and the images of gestures captured is sent to image processor；Described image After processor receives the images of gestures, pretreatment and feature point extraction first are carried out to the images of gestures, obtain user hand Gesture information compares the user gesture information and pre-stored Pre-defined gesture information, when user gesture and makes a reservation for Adopted gesture determines that successfully then user gesture is processed into corresponding control instruction and is sent to water heater control by combination temperature control strategy Device processed；Otherwise it is assumed that determining failure, image is reacquired；The water heater controller controls water heater according to the control instruction Whether heated.The optical filter can only penetrate infrared light identical with 2 wavelength of infrared light supplementing device.The operating area of water heater 3 are projected on wall plane by operating area projection device 4, which goes out a visible static map using laser projection Case, the content of pattern are determined by the pattern that the film being mounted on the laser equipment is printed；Increasing infrared light supplementing device can disappear Except interference, the brightness of finger is improved and reduces with this calculation amount of main control chip.Described image processor uses embedded chip. The temperature control strategy is that current water heater actual temperature value is detected using PT100 temperature sensor, described to determine successfully User gesture is described when set temperature value is higher than actual temperature value for determining whether set temperature value changes and variable quantity Control instruction is to heat to water heater, and when set temperature value is less than or equal to actual temperature value, the control instruction is Water heater is not heated；The pretreatment includes that cutting and Threshold segmentation are carried out to images of gestures.The feature point extraction To progressively scan to 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 mobile side To and track sets.

The control device further includes display, and the display is used for the information to user's display water heater, the heat The information of hydrophone includes actual temperature value and set temperature value.

The utility model also proposes a kind of plane gestural control method of water heater, comprising:

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；Heat The operating area 3 of hydrophone is projected on wall plane by operating area projection device 4, which goes out one using laser projection A visible static pattern, 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 is compared with pre-stored Pre-defined gesture information, when user gesture and Pre-defined gesture determine successfully, then to combine User gesture is processed into corresponding control instruction by temperature control strategy, otherwise determines failure, reacquires image；The temperature Control strategy is that current water heater actual temperature value is detected using PT100 temperature sensor, described to determine successful user gesture For determining whether set temperature value changes and variable quantity, when set temperature value is higher than actual temperature value, the control instruction To heat to water heater, when set temperature value is less than or equal to actual temperature value, the control instruction is not to hot water Device is heated, and image is reacquired；

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 utility model passes through the click and cunning of the finger on metope It moves to control water heater, the volume of control panel can be greatly reduced；Any noise will not be generated when control, no mechanical wear makes Long with the service life, 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, is filtered using the narrowband of OV7620 camera and 808nm For mating plate as input detection unit, infrared light supplementing device externally emits an infrared wordline for 808nm wavelength；The platform has used ST public The stm32f407 of department is as main control unit chip；Water heater control unit is added in such a way that relay adds resistance wire Pt100 thermocouple sensor detects water temperature；Display unit shows set temperature value by the way of triode drive digital tube And actual temperature value.

1, system hardware initialization:

The initialization procedure includes: initialization ov7620 camera, and PWM output is used to drive 808nm infrared all the way for configuration Light aid, 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 The analog-digital converter etc. of PT100 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 carried out according to actual operating area size than broader Screenshot 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 between pixel Relationship finds 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 falls in key 1 In scope, then finger down key 1 is determined, set temperature value increases by 1, otherwise checks whether finger point is located at key 2 Scope in, if it is determine finger down key 2, set temperature value subtracts 1, otherwise it is assumed that finger is not pressed 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, be generated by main control chip corresponding Control instruction notifies water heater control unit to connect relay, connects resistance wire and heats to water temperature.

Above to a kind of plane gesture control device of water heater provided by the utility model, it is described in detail, Specific case used herein is expounded the principles of the present invention and embodiment, and the explanation of above embodiments is only It is the method and its core concept for being used to help understand the utility model；At the same time, for those skilled in the art, foundation The thought of the utility model, there will be changes in the specific implementation manner and application range, in conclusion in this specification Appearance should not be construed as a limitation of the present invention.

Claims (6)

1. a kind of plane gesture control device of water heater, which is characterized in that the camera sensing device including having optical filter (1), infrared light supplementing device (2), image processor and water heater controller；Predefined hand has been stored in advance in described image processor Gesture information；

The camera sensing device (1) with optical filter receives the reflection light of infrared light supplementing device (2) on object, captures and uses The images of gestures that family is formed in operating area, and the images of gestures captured is sent to image processor；Described image After processor receives the images of gestures, pretreatment and feature point extraction first are carried out to the images of gestures, obtain user hand Gesture information compares the user gesture information and pre-stored Pre-defined gesture information, when user gesture and makes a reservation for Adopted gesture determines that successfully then user gesture is processed into corresponding control instruction and is sent to water heater control by combination temperature control strategy Device processed；The water heater controller controls whether water heater is heated according to the control instruction.

2. the apparatus according to claim 1, it is characterised in that: the temperature control strategy specifically:

Current water heater actual temperature value is detected using PT100 temperature sensor, it is described to determine successful user gesture for certainly Determine set temperature value whether to change and variable quantity, when set temperature value is higher than actual temperature value, the control instruction is to heat Hydrophone is heated.

3. the apparatus of claim 2, it is characterised in that: the pretreatment includes carrying out cutting and threshold to images of gestures Value segmentation.

4. device according to claim 3, 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.

5. device according to claim 4, it is characterised in that: the control device further includes display, the display For the information to user's display water heater, the information of the water heater includes actual temperature value and set temperature value.

6. device according to claim 5, it is characterised in that: the optical filter can only penetrate and infrared light supplementing device (2) wave Long identical infrared light.