CN104019902B - Domestic reagent paper reader device and detection method thereof - Google Patents

Abstract

The invention discloses a kind of domestic reagent paper reader device and detection method thereof, wherein this device includes sealing detection space, this sealing detection is spatially provided with active window, motor it is provided with in it, this motor is provided with the pallet for placing tested reagent paper, pallet is arranged over convex lens, and convex lens is provided above color sensor, is also arranged above secondary light source at pallet；This device also includes microprocessor, is connected with motor；Being provided with contact on pallet, pallet is also arranged above the sense contact being connected with microprocessor；This device is additionally provided with data storage, is connected with microprocessor；This sealing detection space is externally provided with liquid crystal display and button, is all connected with microprocessor.The present invention can show testing result automatically, the impact of anthropic factor during can avoiding manually reading.

Description

Domestic reagent paper reader device and detection method thereof

Technical field

The present invention relates to the automatic detection of different reagent paper, particularly relate to a kind of domestic reagent paper reader device and Its detection method.

Background technology

Along with the development of biochemistry detection technology, the scope of detection paper is increasingly wider, except scientific research institutions, height Outside school and medical science detection, increasing test paper detecting method enters huge numbers of families, such as tap water Detection (pH value, content of beary metal), Detecting Pesticide, domestic environment detection (formaldehyde examination), Human body biochemical indicator detection (early pregnancy, blood glucose)；Owing to reagent paper huge number, detection method are different, give inspection Survey brings inconvenience, simultaneously takes account of the visual disorder etc. of achromate, old people, reagent paper measurement of comparison There is bigger personal error.

Along with the theoretical development with detection technique of color science, the measurement of colouring information is with process in industry certainly Dynamicization application is more and more extensive, is mainly reflected in the aspect such as quality control, Classification and Identification.Color measuring master Spectrophotometer to be had and photoelectric colorimeter, both measuring principles are different.Spectrophotometer is by measuring The spectrum of reflection light calculates color value, and its precision is high but cost is the most too high, and photoelectric colorimeter is simulation human eye Color-aware process, the color measuring carried out, its result is simple, low cost, such as CCD imaging technique And color sensor, by color calculation and colour recognition, according to aberration minimum principle, it is thus achieved that close to people Body vision is experienced.Utilize color sensor by reagent paper color acquisition, and carry out chrominance distortion, try with standard Paper is compared, it is thus achieved that measurement result, has advantage quick, simple.

Summary of the invention

It is an object of the invention to, it is achieved the display of variety classes reagent paper test result, preservation, it is provided that one Plant detection method and the device of universal household reagent paper reader, overcome the inconvenience that tradition reagent paper test is read.

The present invention realizes its purpose and be the technical scheme is that

Thering is provided a kind of domestic reagent paper reader device, this device includes sealing detection space, this sealing detection Spatially being provided with active window, be provided with motor in it, this motor is provided with for placing tested The pallet of reagent paper, pallet is arranged over convex lens, and convex lens is provided above color sensor, on pallet Side is additionally provided with secondary light source；This device also includes microprocessor, is connected with motor；Pallet sets Contact, pallet is had to be also arranged above the sense contact being connected with microprocessor；This device is additionally provided with data and deposits Reservoir, is connected with microprocessor；

This sealing detection space is externally provided with liquid crystal display and button, is all connected with microprocessor.

In device of the present invention, outside this sealing detection space, it is additionally provided with Temperature Humidity Sensor, with micro-place Reason device connects.

In device of the present invention, this active window is for renovating window.

In device of the present invention, this microprocessor is additionally provided with wireless communication module, host computer or end End is connected with microprocessor by this wireless communication module.

In device of the present invention, this device is additionally provided with USB interface and external keyboard.

The present invention also provides for a kind of test paper detecting method based on said apparatus, comprises the following steps:

White balance detects；

Selecting stationery to be tested other by button, microprocessor sends control instruction, and drive stepping motor is transported OK, driving pallet to move and stretch out sealing detection space, motor moves the sense contact above pallet；

Tested reagent paper is placed on pallet, by button operation, microprocessor driven motor, will hold in the palm Dish moves in sealing detection space；

Starting secondary light source, the reflection light on tested reagent paper, through convex lens focus, enters color sensing Device, the frequency signal of the output trichroism correspondence of RGB, microprocessor gathers the frequency values that RGB is corresponding respectively, Through computing, be converted to HSV color model, calculate corresponding tone value h, by h value and be stored in data In storehouse, the standard testing strips Data Comparison of corresponding kind, obtains the measured value of tested reagent paper；

The measured value of tested reagent paper is shown on a liquid crystal display.

In method of the present invention, the measured value of tested reagent paper is transmitted supreme by wireless communication interface Position machine or terminal processes.

In method of the present invention, further comprise the steps of:

Select mode of extension by button, input the title of new standard testing strips, read this standard testing strips All classifications, carry out the conversion of color space, and RGB is converted to hsv color space, determine that standard is tried The tone of paper determines decision area thresholding, and inputs corresponding test result, is stored in standard testing strips data base In.

In method of the present invention, when standby, by liquid crystal display display time, temperature and wet Degree.

Use the method have the advantages that in the present invention and gathers tested reagent paper by color sensor Color, by the standard testing strips comparing with storage, it is thus achieved that the test result of tested reagent paper, overcomes The personal error existed measured by reagent paper, and surveyed data can show and store.

Further, reagent paper test approaches can be extended by on-the-spot or remote upgrade, uses giant-screen to show Showing, the old people etc. being particularly well-suited to achromate, visual disorder uses, and this device also has clock day Go through, indoor temperature and humidity display function.

Accompanying drawing explanation

Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:

Fig. 1 is embodiment of the present invention universal household reagent paper reader device structure chart；

Fig. 2 is embodiment of the present invention tray position testing circuit schematic diagram；

Fig. 3 is embodiment of the present invention color sensor and Temperature and Humidity circuit theory diagrams；

Fig. 4 is embodiment of the present invention USB interface charging circuit schematic diagram；

Fig. 5 is embodiment of the present invention universal household reagent paper reader device appearance assumption diagram.

Detailed description of the invention

In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing and Embodiment, is further elaborated to the present invention.Should be appreciated that described herein being embodied as Example only in order to explain the present invention, is not intended to limit the present invention.

The universal household reagent paper reader device of the embodiment of the present invention, as it is shown in figure 1, include sealing detection Space 1, this sealing detection space 1 is provided with active window, is provided with motor 6 in it, this stepping electricity Machine 6 is provided with the pallet 16 for placing tested reagent paper, and pallet 16 is arranged over convex lens 3, convex lens 3 are provided above color sensor 2, are also arranged above secondary light source 4 at pallet 16；This device also includes micro- Processor 7, is connected with motor 6；Being provided with contact 15 on pallet 16, this electric shock 15 can be arranged In pallet 16 side, pallet 16 is also arranged above the sense contact 14 being connected with microprocessor 7；This dress Put and be additionally provided with data storage 10, be connected with microprocessor 7；

This sealing detection space 1 is externally provided with liquid crystal display 9 and button, is all connected with microprocessor 7.

In the embodiment of the present invention, as it is shown in figure 1, by color sensor 2, convex lens 3, secondary light source 4, Tested reagent paper 5, pallet 16, motor 6, microprocessor 7, data storage 10 and radio communication Module 11 is built in sealing detection space 1, can overcome the impact of ambient light, button and liquid crystal display Device 9 is placed in outside, convenient operation.

In one embodiment of the present of invention, active window can be set to renovate window.

Further, this device is additionally provided with USB interface and keyboard 8.This USB interface may be used for device Charging.When can be extended again by external keyboard 8, the title of input reagent paper.

This device can control motor 6 by microprocessor 7 and move pallet 16 and pass in and out sealing detection space 1, conveniently place or take away tested reagent paper 5；Secondary light source 4 is for the tested reagent paper of uniform irradiation 5, and it is anti- Penetrate light and concentrate on color sensor 2 through convex lens 3, it is thus achieved that reagent paper color parameter (RGB)；Micro-place Reason device 7, through processing, carries out the conversion of color space, RGB is directly converted to hsv color space, The tone of establishing criteria reagent paper determines decision area thresholding, compares and obtains the test result of tested reagent paper.

Wireless communication module and host computer communication, can pass through radio communication by the test structure of tested reagent paper Mode is transferred to host computer storage and preserves, and by the new standard testing strips test data of extension by wireless Communication mode is transferred to this detection device, and upgrade Test paper data base.

This device can control motor 6 by microprocessor 7 and move pallet 16 and pass in and out sealing detection space 1, simultaneously in the contact 15 that Tray side leaves, it is simple to detection tray position, fixed tray removal and immigration Final position, as shown in Figure 2.

The color sensor data of this device process through microprocessor 7, carry out the conversion of color space, Directly RGB being converted to hsv color space, the tone of establishing criteria reagent paper determines decision area thresholding, Compare and obtain the test structure of tested reagent paper.Its operation method is

The color rgb value of color sensor collecting sample (r, g, b), represent respectively the red, green of color and Blue value, if the maximum that is respectively in r, g, b of max, min and minima.

Changing from RGB to hsv color space, corresponding relation is

$s=\left\{\begin{array}{cc}0,& \mathrm{if}\max =0\\ 1-\frac{\min }{\max },& \mathrm{otherwise}\end{array}\right.$

V=max

Color value r of RGB model, g, b are 0～255.Hsv color space is can get according to above formula, (h, s, v) in color model, h represents tone, the behalf saturation i.e. purity of color to HSV, and v represents Lightness, h value 0～360 degree, for hue angle, red corresponding to 0 °, green is corresponding to 120 °, blue Color corresponds to 240 °.Obviously, the color value of RGB model is converted to hue angle h, can distinguish not Same color.RGB color value according to standard testing strips test is converted to hue angle h, and by standard testing strips Color be converted to hue angle h and reagent paper test structure with test paper result corresponding relation corresponding, and draw according to this Divide the comparison threshold of standard testing strips, as the standard of comparison of tested reagent paper.

It is additionally provided with Temperature Humidity Sensor, with micro-outside the sealing detection space of the reagent paper reader device of the present invention Processor 7 connects.Digital thermometer can be used, microprocessor 7 by with temperature and humidity sensing The port processing humiture information that device connects.Temperature Humidity Sensor may be disposed at the device back side, liquid crystal display Device display reagent paper test value, time standby, liquid crystal display can show calendar, time successively, and temperature, Humidity.

In the preferred embodiment, when carrying out detection paper by said apparatus, by tested reagent paper Being placed on pallet, measuring method comprises the following steps:

1, carrying out bottom in white balance detection, i.e. pallet before detection is blank sheet of paper, detects its color, carries out White balance processes；

2, selecting stationery to be tested other by button, microprocessor sends control instruction, drive stepping motor Running, drive pallet to move and stretch out sealing detection space, motor moves to sense contact 14, user Tested reagent paper is placed on pallet, by button operation, microprocessor driven motor, pallet is moved Enter in sealing detection space；

3, starting secondary light source, the reflection light on tested reagent paper, through convex lens focus, enters color and passes Sensor, the frequency signal of the output trichroism correspondence of RGB, microprocessor gathers the frequency values that RGB is corresponding respectively, Through computing, be converted to HSV (h, s, v) color model, calculate corresponding tone value h, by h value with deposit Storage is the standard testing strips Data Comparison of corresponding kind in data base, obtains the measured value of tested reagent paper；

4, the measured value of tested reagent paper can be locally displayed, or is processed by wireless communication transmissions to host computer.

The method that extension reagent paper is measured comprises the following steps:

1, carrying out bottom in white balance detection, i.e. pallet before detection is blank sheet of paper, detects its color, carries out White balance processes；

2, select extension reagent paper function key by button, new reagent paper classification can be inputted by external keyboard, micro- Processor sends control instruction, and drive stepping motor is run, and drives pallet to move and stretches out sealing space, step Entering motor to move to contact 14, tested standard testing strips is placed on pallet by user, by button operation, micro- Processor drive stepping motor, moves into pallet and seals in space；

3, starting secondary light source, the reflection light on tested reagent paper, through convex lens focus, enters color and passes Sensor, the frequency signal of the output trichroism correspondence of RGB, microprocessor gathers the frequency values that RGB is corresponding respectively, Through computing, (h, s, v) color model, calculate corresponding tone value h, stores h to be converted to HSV Value, and input measured value corresponding to this standard testing strips (such as concentration, content etc.)；

4, all standard testing strips of repeated measure, the measured value that storage is corresponding；

5, button prompting terminates reagent paper test, and microprocessor will calculate thresholding according to measured tone value, point The standard testing strips measured value that pairing is answered, and be stored in data storage；

6, wireless communication unit can be used for system upgrade, extends tested reagent paper kind.

Key Circuit realizes with device

1, the control of tray position

Tray position space is controlled by two contact positions, as shown in Figure 2.When step motor drive torr When dish is moved to arrange position, pallet contact contact 14, signal becomes 0 to microprocessor from 1 Port p1.7, controls motor out of service；When step motor drive pallet moves into and arranges position, torr Dish contact contact 13, signal becomes 0 from 1 and stops to the port p1.6 of microprocessor, control motor Running, pull-up resistor R1, R2 value is 1k Ω.

2, sensor circuit

As it is shown on figure 3, this intelligent detection device comprises color sensor, Temperature Humidity Sensor, all with micro- Processor is connected, and color sensor selects TCS230 here, and Temperature Humidity Sensor selects SHT10, micro- Processor is MSP430F4270.The wherein port assignment microprocessor MSP430F4270 of TCS230 I/O port is P6.0～p6.4, and the I/O port of the port assignment microprocessor MSP430F4270 of SHT10 is P6.6～p6.6, the I/O port of the port assignment microprocessor MSP430F4270 of liquid crystal display be P2.0～ P2.7, P5.0～p5.7

3, charging circuit

This device uses cocoa rechargeable battery powered, charging circuit selection LTC4054-4.2V, as shown in Figure 4, The 5V voltage that USB inputs is transferred to 4.2V voltage, and by diode blood pressure lowering, obtains 3.0V～3.6V voltage, Work for system.

4, appearance assumption diagram

The appearance assumption diagram of the present invention is as it is shown in figure 5, i.e. can hang, can also be placed on desktop.Panel Upper end is liquid crystal display, and bottom is button operation district, and side is pallet discrepancy port, it is also possible at panel Lower section is offered and is renovated window, directly inserts tested reagent paper.Temperature Humidity Sensor is placed in the back side, liquid crystal display Reagent paper test value, shows calendar, time, and temperature, humidity successively time standby.It is in low time standby Power consumption mode, working power is that rechargeable battery is powered.

It should be appreciated that for those of ordinary skills, can be changed according to the above description Enter or convert, and all these modifications and variations all should belong to the protection domain of claims of the present invention.

Claims (9)

1. a domestic reagent paper reader device, it is characterised in that this device includes sealing detection space, This sealing detection is spatially provided with active window, is provided with motor in it, and this motor is provided with use In the pallet of the tested reagent paper of placement, pallet is arranged over convex lens, and convex lens is provided above color sensor, It is also arranged above secondary light source at pallet；This device also includes microprocessor, is connected with motor；? Pallet is provided with contact, and pallet is also arranged above the sense contact being connected with microprocessor；This device also sets There is data storage, be connected with microprocessor；

This sealing detection space is externally provided with liquid crystal display and button, is all connected with microprocessor.

Device the most according to claim 1, it is characterised in that be additionally provided with outside this sealing detection space Temperature Humidity Sensor, is connected with microprocessor.

Device the most according to claim 1, it is characterised in that this active window is for renovating window.

Device the most according to claim 1, is characterized in that being, this microprocessor is additionally provided with nothing Line communication module, host computer or terminal are connected with microprocessor by this wireless communication module.

Device the most according to claim 1, is characterized in that being, this device is additionally provided with USB interface And external keyboard.

6. a test paper detecting method based on claim 1, it is characterised in that comprise the following steps:

White balance detects；

Selecting stationery to be tested other by button, microprocessor sends control instruction, and drive stepping motor is transported OK, driving pallet to move and stretch out sealing detection space, motor moves the sense contact above pallet；

Tested reagent paper is placed on pallet, by button operation, microprocessor driven motor, will hold in the palm Dish moves in sealing detection space；

Starting secondary light source, the reflection light on tested reagent paper, through convex lens focus, enters color sensing Device, the frequency signal of the output trichroism correspondence of RGB, microprocessor gathers the frequency values that RGB is corresponding respectively, Through computing, be converted to HSV color model, calculate corresponding tone value h, by h value and be stored in data In storehouse, the standard testing strips Data Comparison of corresponding kind, obtains the measured value of tested reagent paper；

The measured value of tested reagent paper is shown on a liquid crystal display.

Method the most according to claim 6, it is characterised in that the measured value of tested reagent paper is passed through Wireless communication interface transmits to host computer or terminal processes.

Method the most according to claim 6, it is characterised in that further comprise the steps of:

Select mode of extension by button, input the title of new standard testing strips, read this standard testing strips All classifications, carry out the conversion of color space, and RGB is converted to hsv color space, determine that standard is tried The tone of paper determines decision area thresholding, and inputs corresponding test result, is stored in standard testing strips data base In.

Method the most according to claim 6, it is characterised in that when standby, passes through liquid crystal display Device display time, temperature and humidity.