CN204650161U - A kind of digital water curtain control system of low pattern distortion - Google Patents

Abstract

The utility model relates to a kind of digital water curtain control system of low pattern distortion, comprises image conversion module, main control module, flow control module and solenoid valve array; Described image conversion module comprises image transformation circuit, and the output terminal of described flow control model calling main control module is also by the water circulation force value of the control adjustment drencher system of main control module; Described solenoid valve array also connects the output terminal of main control module and the switching signal by main control module controls, and produces water droplet pel array; The input end of described main control module connects the output terminal of image conversion module; The input end of the output terminal connected electromagnetic valve array of described flow control module.The utility model by controlling the initial velocity of water droplet, can realize the image display that vertical-horizontal proportion requirement is higher; Can realize showing more content within the shorter time, as display copy; The parameter of adjustment flow control module can realize the irregular longitudinal stretching of image, image is shown abundanter.

Description

A kind of digital water curtain control system of low pattern distortion

Technical field

The utility model relates to a kind of digital water curtain control system of low pattern distortion, utilizes the distortion that the initial velocity of flow control module and solenoid control water droplet reduction image causes because of Action of Gravity Field.

Background technology

Digital water curtain is a kind of is fundamental element with water, uses tiny current for unit, reaches the water curtain technology of picture and text effect display.Traditional digital water curtain adopts the switch of solenoid valve to realize the generation of water droplet, and the water droplet initial velocity of generation is always steady state value, and when the longitudinal pixel of the image shown is more, due to the effect of gravity, the image of cascade can vertically stretch and produce distortion.Therefore, some personages of display, animal, and word etc. reduces sight to during the image that aspect ratio requirements is higher.

Utility model content

The technical problems to be solved in the utility model is: the digital water curtain control system providing a kind of low pattern distortion.

The utility model solves the technical scheme that its technical matters adopts: a kind of digital water curtain control system of low pattern distortion, comprises image conversion module, main control module, flow control module and solenoid valve array; Described image conversion module comprises image transformation circuit, and the output terminal of described flow control model calling main control module is also by the water circulation force value of the control adjustment drencher system of main control module; Described solenoid valve array also connects the output terminal of main control module and the switching signal by main control module controls, and produces water droplet pel array; The input end of described main control module connects the output terminal of image conversion module; The input end of the output terminal connected electromagnetic valve array of described flow control module.

Flow control module described in the utility model is by flow speed controller, and reserve tank and water circulation system form; The output terminal of described water circulation system connects the input end of reserve tank; The output terminal of reserve tank connects the input end of flow speed controller.

Solenoid valve array described in the utility model is made up of main solenoid valve array and afterflow solenoid valve array; Described main solenoid valve array is connected the output terminal of flow speed controller respectively with the input end of afterflow solenoid valve array; Described main solenoid valve array is connected the input end of water circulation system with the output terminal of afterflow solenoid valve array.

The beneficial effects of the utility model are: 1, by controlling the initial velocity of water droplet, can realize the image display that vertical-horizontal proportion requirement is higher, as personage, and animal, and word etc.; 2, can realize showing more content within the shorter time, as display copy; 3, the parameter adjusting flow control module can realize the irregular longitudinal stretching of image, image is shown abundanter.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the utility model is further illustrated.

Fig. 1 is structural representation of the present utility model;

Fig. 2 is image conversion module principle of work schematic diagram of the present utility model;

Fig. 3 is main control module principle of work schematic diagram of the present utility model;

Fig. 4 is flow control module of the present utility model and electromagnetic valve array array structure schematic diagram;

In figure: 1, image conversion module; 2, main control module; 3, flow control module; 4, solenoid valve array; 31, flow speed controller; 32, reserve tank; 33, water circulation system; 41, main solenoid valve array; 42, afterflow solenoid valve array.

Embodiment

With preferred embodiment, the utility model is described in further detail by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.

The framework of the digital water curtain control system of a kind of low pattern distortion as shown in Figure 1, comprises four parts such as image conversion module 1, main control module 2, flow control module 3 and solenoid valve array 4.Wherein image conversion module 1 is primarily of image transformation circuit composition, and this module carries out the extraction of transverse and longitudinal pixel to original view data according to the solenoid valve quantity in solenoid valve array 4, and exports the view data after conversion to main control module 2.Main control module 2 generates the switching signal of corresponding solenoid valve and the initial velocity compensation rate of flow control module 3, to reduce the distortion of image according to the view data of image conversion module 1.Solenoid valve array 4 controls by main control module 2, and the water droplet arranging horizontal pixel with each is a unit, produces water droplet according to the electromagnetic valve switch signal preset, thus generates cascade image.

Image conversion module principle of work schematic diagram described in the utility model is as shown in Figure 2:

In the present embodiment, image conversion module 1 mainly completes the transfer process of raw image data to cascade pixel.Be divided into 2 parts to the leaching process of original image, first according to the resolution sizes of original image, under the condition keeping depth-width ratio, pixels across reduced it or be enlarged into j, wherein j is the solenoid valve quantity of solenoid valve array 4.Secondly the image outline after extracting convergent-divergent also converts it to 0-1 digital quantity signal.

Main control module principle of work schematic diagram described in the utility model is as shown in Figure 3:

In the present embodiment, main control module 2 primary convective speed control module 3 carries out controlling to compensate acceleration of gravity and by the switching signal one_to_one corresponding of key images pixel and solenoid valve array 4.The image of i × j pixel is finally shown in former ratio on cascade, needs to carry out initial velocity compensation to the cascade pixel of every a line.As shown in Figure 3, wherein the n-th row picture element signal is analyzed, obtain i the pixel needing display.If need ensure, the image aspect ratio of final display is constant, then need the initial velocity controlling each water droplet.Suppose that the water droplet initial velocity formed at first is 0, i water droplet pixel height h, between two spacing be Δ h, then in display second water droplet pixel p _2ntime, tackle it and do initial velocity compensation, i.e. water droplet pixel p _2ninitial velocity should equal p _1nspeed after the Δ h of whereabouts, that is:

$v_{2n_0}=\sqrt{2g\mathrm{\Δ}h}$

Wherein: v _2n0for p _2nthe initial velocity of water droplet, g is acceleration of gravity.

The corresponding control moment is:

$t_2=\sqrt{\frac{2\mathrm{\Δ}h}{g}}$

Wherein: t ₂for p _2nin the control moment of water droplet, g is acceleration of gravity.

Thus, the control moment of any one-row pixels can be obtained, that is:

$t_m=\sqrt{\frac{2(m-1)\mathrm{\Δ}h}{g}}$

1≤m≤i

Wherein: t _mfor p _mnin the control moment of water droplet, g is acceleration of gravity.

Due to the continuity of cascade in the vertical direction, single solenoid valve is at any two adjacent control moment t _m, t _m+1state in the corresponding time remains unchanged, with t _mthe control signal in moment is identical.

Meanwhile, any one-row pixels p can be obtained _m1, p _m2... p _mn... p _mithe corresponding corresponding initial velocity size controlled required for the moment is:

$v_{m_0}=\sqrt{2(m-1)g\mathrm{\Δ}h}$

Wherein: v _m0be that the capable water droplet of m controls initial velocity offset corresponding to moment, g is acceleration of gravity.

It can thus be appreciated that, water droplet pixel need do in flow control module 3 before falling acceleration be the motion of g to compensate the effect of acceleration of gravity, thus reduction image distortion.Therefore, main control module 2 by output stream speed control module 3 pressure controling signal to complete this process.

Flow control module described in the utility model and electromagnetic valve array list intention as shown in Figure 4:

Flow control module 3 is by flow speed controller 31, and reserve tank 32 and water circulation system 33 form, and solenoid valve array 4 is made up of main solenoid valve array 41 and afterflow solenoid valve array 42.Flow control module 3 controls by main control module 2, and adjustment current output pressure, makes the current outputting to solenoid valve array 4 have certain initial velocity.Solenoid valve array 4 is divided into main solenoid valve array 41 and afterflow solenoid valve array 42 two parts, wherein, main solenoid valve array 41 is responsible for the display of cascade image, and the high precision that afterflow solenoid valve array 42 can realize cascade controls and reduces the algorithm of flow control module 3 and the complexity of circuit.Main solenoid valve array 41 controls by main control module 2, the cascade image that final generation will show, afterflow solenoid valve array 42 controls by main control module 2 simultaneously, by each solenoid valve controlled after the whole negate of electromagnetic valve switch signal of main control module in afterflow solenoid valve array 42, finally make the cascade signal bump maps picture each other that main solenoid valve array 41 and afterflow solenoid valve array 42 export, namely in the process of image display, the solenoid valve quantity opened of any one moment is identical, guarantee that main control module 2 can carry out convection current speed control module 3 by a constant pressure control values and carry out opened loop control, to eliminate the impact of acceleration of gravity on cascade image, form the cascade image determining depth-width ratio.In real process, due to the existence of air resistance, the pressure set points outline of flow control module 3 is higher than theoretical value.

Obviously, have benefited from the design proposal of flow control module and solenoid valve, the pattern distortion that the initial velocity that system can control water droplet pixel brings to compensate acceleration of gravity, therefore, the utility model scheme can reduce the distortion of digital water curtain image.

The just embodiment of the present utility model described in above instructions, various illustrating is not construed as limiting flesh and blood of the present utility model, person of an ordinary skill in the technical field after having read instructions can to before described embodiment make an amendment or be out of shape, and do not deviate from essence and the scope of utility model.

Claims (3)

1. a digital water curtain control system for low pattern distortion, is characterized in that: comprise image conversion module, main control module, flow control module and solenoid valve array; Described image conversion module comprises image transformation circuit, and the output terminal of described flow control model calling main control module is also by the water circulation force value of the control adjustment drencher system of main control module; Described solenoid valve array also connects the output terminal of main control module and the switching signal by main control module controls, and produces water droplet pel array; The input end of described main control module connects the output terminal of image conversion module; The input end of the output terminal connected electromagnetic valve array of described flow control module.

2. the digital water curtain control system of a kind of low pattern distortion as claimed in claim 1, is characterized in that: described flow control module is by flow speed controller, and reserve tank and water circulation system form; The output terminal of described water circulation system connects the input end of reserve tank; The output terminal of reserve tank connects the input end of flow speed controller.

3. the digital water curtain control system of a kind of low pattern distortion as claimed in claim 1, is characterized in that: described solenoid valve array is made up of main solenoid valve array and afterflow solenoid valve array; Described main solenoid valve array is connected the output terminal of flow speed controller respectively with the input end of afterflow solenoid valve array; Described main solenoid valve array is connected the input end of water circulation system with the output terminal of afterflow solenoid valve array.