TW202018277A - Rgb three primary color automatic titrator and method for measuring concentration of analyte of solution thereby - Google Patents

Abstract

An RGB three primary color automatic titration device, which comprises a color sensor, a plurality of peristaltic pumps, a titration tank, and a microprocessor. The device uses peristaltic pumps to deliver liquid to the titration tank and titrate with one of the peristaltic pumps. The color sensor of the device can detect the RGB reading values of the solution in the titration tank to know the end point of the titration, and the microprocessor can calculate the concentration of the analyte in the solution based on the flow rate fed back by the titrated peristaltic pump. Furthermore, the microprocessor has the function of a wireless network to transmit the measured data to an online hard drive.

Description

RGB three primary colors automatic titration device and method for measuring solution analyte concentration

The invention relates to a titration device, in particular to an automatic titration device, and a method for measuring the analyte concentration in a solution with the device.

At present, in factories, such as the copper plating production lines of printed circuit board factories, it is often necessary to measure the copper ion concentration of the copper sulfate bath in the copper plating tank to ensure the quality of copper plating and avoid poor copper plating quality, resulting in a large number of scrapped boards .

Titration is one of the main methods currently used in industry to measure the concentration of bath liquid. It is used in industrial automatic titration devices, mainly potentiometric titration devices. The device includes a voltmeter connected to a reference electrode and an indicator electrode. Due to the different ion concentrations inside and outside the indicator electrode, a potential difference is generated, which is linearly related to the logarithm of the measured ion concentration. When the potentiometric titration is carried out, the titrant is added to the reaction tank and reacts with the reactant. When the concentration of the reactant changes, the potential difference of the electrode also changes. The sudden change of the potential measured by the electrode is used to indicate the end point of the titration, according to the Nernst equation (Nernst equation), calculate the concentration of the analyte.

However, the above method still has shortcomings. Due to the measurement of different analytes, different ion-selective electrodes corresponding to them need to be used, and due to the consumption of the internal filling liquid, the electrodes need to be replaced regularly, which is costly. If the titration is performed by traditional manual method, a person must take a sample to the chemical tank and take it in China-Israel quantitative pipe fittings are carried out repeatedly, which is time-consuming and laborious, and there are doubts about lower accuracy and higher risk.

In order to solve the shortcomings of the conventional technology, the present invention proposes an automatic titration device and a method for measuring the concentration of analyte in a solution using the automatic titration device, which can save time and labor, and has the advantages of higher accuracy and reduced operation risk.

The purpose of the present invention is to provide an automatic titration device to replace the traditional manual titration method, improve the measurement efficiency and reduce the human error. In addition, compared with the use of a potentiometric titration device to measure the concentration, the RGB three primary color automatic titration device of the present invention does not require preparation and regular replacement of multiple sets of ion selective electrodes, so cost can be saved.

To achieve the above object, the present invention discloses an RGB three primary color automatic titration device, which includes: a host, including a power supply and a microprocessor, the microprocessor has a wireless transmission function, can transmit the measured analyte concentration to A network hard disk for personnel analysis; a human-machine interface, which is electrically coupled to the front host. The human-machine interface is a touch-sensitive device that provides an operator's input; a titration tank can hold 100ml of solution , There is a polytetrafluoroethene (polytetrafluoroethene) coating, can resist acid and alkali, high temperature resistance, the titration tank is fixed on a base, equipped with a servo motor, the servo motor includes a servo drive, and the aforementioned host electrical Coupling, used to rotate the titration tank to keep the solution in the titration tank uniformly mixed. In addition, the titration tank has a drain tube for draining; a color sensor, which is electrically connected to the aforementioned host Sexual coupling, the color sensor includes a plurality of IR light-emitting diodes (IR LEDs), a plurality of white light-emitting diodes (white LEDs), and a sensor (sensor), when measuring the analyte concentration of the solution, The plurality of infrared light-emitting diodes emit infrared LED light to the solution under test, the sensor detects the intensity of infrared light reflected from the solution under test to obtain a proximity, and the plurality of white light-emitting diodes Emits white LED light to the measured solution, the sensor detects the color light with R (red), G (green), B (blue) spectrum reflected from the measured solution to obtain R, G, B readings, The reading range of the R, G, B is 0-255; in the plurality of peristaltic pumps, at least one of the peristaltic pumps for titration includes a flowmeter, which is electrically coupled to the aforementioned host, each The peristaltic pump contains a hose for transferring liquid from an external container into the titration tank. According to requirements, each peristaltic pump can set different flow rates, peristaltic pumps that perform liquid delivery can set higher flow rates, and peristaltic pumps that perform titration can set lower flow rates to take into account both liquid delivery efficiency and titration accuracy.

100‧‧‧Host

101‧‧‧Microprocessor

102‧‧‧Power

103‧‧‧Human-machine interface

200‧‧‧Titration tank

201‧‧‧Dock

202‧‧‧Servo motor

203‧‧‧Servo Drive

204‧‧‧Drainage tube

205‧‧‧Top cover

206‧‧‧Top cover perforation

207‧‧‧Top opening of the top cover

300‧‧‧Color sensor

301‧‧‧Sensor

302‧‧‧White LED

303‧‧‧Infrared LED

400‧‧‧Hose

401‧‧‧First peristaltic pump

402‧‧‧Second Peristaltic Pump

403‧‧‧The third peristaltic pump

404‧‧‧The fourth peristaltic pump

405‧‧‧Flowmeter

501‧‧‧The first container

502‧‧‧Second container

503‧‧‧The third container

504‧‧‧The fourth container

600‧‧‧Infrared LED light

700‧‧‧White LED light

800‧‧‧Test solution

S1-S9‧‧‧Step

Figure 1 is a schematic diagram of the configuration of the RGB primary color automatic titration device of the present invention; Figure 2 is a schematic diagram of the color sensor of the present invention detecting the RGB reading of a test solution; Figure 3 is a titration tank according to the present invention Top view of the top cover; Figure 4 is a schematic diagram of the main components of the color sensor according to the present invention; and Figure 5 is a flowchart according to an embodiment of the present invention

In order to make the above-mentioned and other objects, features, and advantages of the present invention more obvious and understandable, the preferred embodiments of the present invention will be specifically described below in conjunction with the accompanying drawings, which are described in detail below.

Please refer to Figure 1, which is an automatic titration of RGB three primary colors according to the present invention Schematic diagram of device configuration. The invention provides an RGB three primary color automatic titration device, which includes a host 100, including a power supply 102 and a microprocessor 101; a human-machine interface 103, electrically coupled with the host 100; a titration tank 200, which can hold 100ml The solution has a polytetrafluoroethene coating inside, which is resistant to acid and alkali and high temperature. The titration tank 200 is fixed to a base 201 and is equipped with a servo motor 202. The servo motor 202 includes a servo drive 203, electrically coupled with the aforementioned host 100 to control the operation of the servo motor 202. The servo motor 202 is used to rotate the titration tank 200; the first peristaltic pump 401, the second peristaltic pump 402, the third peristaltic pump 403, the fourth peristaltic pump 404, these peristaltic pumps are electrically coupled to the aforementioned host 100, Each peristaltic pump includes a hose 400 for transferring liquid from the first container to the fourth container (501,502,503,504) to the aforementioned titration tank 200, wherein the fourth peristaltic pump 404 includes a flow meter 405; a sense of color The detector 300 is electrically coupled to the aforementioned host 100. Please refer to FIG. 4 together. The color sensor 300 includes a plurality of infrared light-emitting diodes 303 (IR light-emitting diodes, IR LEDs) and a plurality of white light-emitting diodes 302 (white light-emitting diodes, white LEDs) and a sensor 301 (sensor). Please refer to FIG. 2 and FIG. 3 together. The color sensor 300 is placed on the central opening 207 of the top cover 205 of the titration tank 200. The hose 400 of each peristaltic pump (401, 402, 403, 404) enters the titration tank 200 through the perforation 206 of the top cover 205.

Please refer to FIG. 5, which is a flowchart according to an embodiment of the present invention, and refer to FIGS. 1 to 4 to perform the following steps when measuring the analyte concentration with the RGB primary color titration apparatus of the present invention: S1, confirm that the color sensor 300 has been correctly placed on the central opening 207 of the top cover 205 of the titration tank 200, and turn on the host 100; S2, the first peristaltic pump 401 flows from the first container 501 at a flow rate of 0.5 l/min, Extract 50ml of distilled water to the titration tank 200 (please refer to Figure 1); S3, the second peristaltic pump 402 draws 1ml of copper sulfate solution (measured solution) from the second container 502 to the titration tank at a flow rate of 15ml/min Tank 200 (please refer to Figure 1); S4 starts the servo motor 202 to rotate the titration tank 200 to keep the solution in the titration tank 200 evenly mixed (please refer to Figure 1 or Figure 2); S5, The third peristaltic pump 403 draws 1 ml of the chlorophenol red indicator solution from the third container 503 to the titration tank 200 at a flow rate of 15 ml/min (please also refer to FIG. 1); S6, the fourth peristaltic pump 404 starts from the Four containers 504, at a flow rate of 5ml/min, draw sodium thiosulfate (Na ₂ S ₂ O ₃ ) solution to the titration tank 200 for titration, the plurality of infrared light emitting diodes 303 of the color sensor 300 and white light emitting Diode 302 (Figure 4) emits infrared light 600 and white light 700 to the test solution 800 (Figure 2) of the titration tank 200, wherein the infrared light-emitting diode 303 emits infrared LED light 600 to the test solution 800. The sensor 301 detects the intensity of the infrared light reflected by the solution 800 to obtain a proximity. The white light-emitting diode 302 emits white LED light 700 to the solution 800 to be tested. The aforementioned sensor 301 Detect the color light with the R (red), G (green), and B (blue) spectrum reflected from the solution to obtain the readings of R, G, and B. The reading range of R, G, and B is 0- 255. (Please refer to Figure 1, Figure 2 and Figure 4 together); S7, when the reading of R, G and B measured by the sensor 301 reaches the target condition (R>B), the titration is terminated; S8 , The titration amount recorded by the flow meter 405 of the fourth peristaltic pump 404 is fed back to the microprocessor 101; S9, the microprocessor 101 calculates the copper ion concentration in the copper sulfate solution according to the titration amount fed back by the flow meter 405, And send the concentration value to a network hard disk.

After the concentration measurement is completed, the solution in the titration tank 200 is discharged through the drain pipe 204.

Although the present disclosure has been disclosed as above with preferred embodiments, it is not intended to limit the present disclosure. Those with ordinary knowledge in the technical field to which the present disclosure belongs can make various modifications and changes without departing from the spirit and scope of the present disclosure Retouching, therefore, the scope of protection of this disclosure shall be deemed as defined by the scope of the attached patent application.

100‧‧‧Host

101‧‧‧Microprocessor

102‧‧‧Power

103‧‧‧Human-machine interface

200‧‧‧Titration tank

201‧‧‧Dock

202‧‧‧Servo motor

203‧‧‧Servo Drive

204‧‧‧Drainage tube

205‧‧‧Top cover

300‧‧‧Color sensor

400‧‧‧Hose

401‧‧‧First peristaltic pump

402‧‧‧Second Peristaltic Pump

403‧‧‧The third peristaltic pump

404‧‧‧The fourth peristaltic pump

405‧‧‧Flowmeter

501‧‧‧The first container

502‧‧‧Second container

503‧‧‧The third container

504‧‧‧The fourth container

Claims (13)

An RGB three primary color automatic titration device, including: a host, including a power supply and a microprocessor; a human-machine interface, electrically coupled with the aforementioned host; a titration barrel tank, fixed to a base, the titration barrel tank is equipped with A servo motor electrically coupled to the host for rotating the titration tank; a color sensor electrically coupled to the host, the color sensor includes a plurality of infrared light emitting diodes (IR light-emitting diode, IR LEDs), a plurality of white light-emitting diodes (white LEDs) and a sensor; a plurality of peristaltic pumps, the plurality of peristaltic pumps and the aforementioned host Electrically coupled, each peristaltic pump contains a hose for transferring liquid from an external container to the aforementioned titration tank; wherein the plurality of infrared light-emitting diodes emit infrared LED light to the solution to be measured, the sensor Detect the intensity of infrared light reflected from the measured solution to obtain a degree of proximity. The plurality of white light-emitting diodes emit white LED light to the measured solution, and the sensor detects reflection from the measured solution The colored light with R (red), G (green), and B (blue) spectra is used to obtain R, G, and B readings. The RGB three primary color automatic titration device as described in item 1 of the patent application scope, wherein the man-machine interface is a touch interface. The RGB three primary color automatic titration device as described in item 1 of the patent application scope, wherein a polytetrafluoroethene coating is provided inside the titration tank. The RGB primary color automatic titration device as described in item 1 of the patent application scope, wherein the titration tank can hold 100 ml of solution. The RGB three primary color automatic titration device as described in item 1 of the patent scope, wherein the titration tank is provided with a top cover, the top cover is provided with a plurality of perforations for the aforementioned hose to enter, and an opening is provided in the center of the top cover, For placement of the aforementioned color sensor. The automatic titration device of RGB three primary colors as described in item 1 of the patent application scope, wherein the titration tank is provided with a drain tube. The RGB three primary color automatic titration device as described in item 1 of the patent application scope, wherein the servo motor includes a servo driver, and the servo driver is electrically coupled with the aforementioned host to control the operation of the servo motor. The RGB primary color automatic titration device as described in item 1 of the patent application scope, wherein the plurality of peristaltic pumps include a first peristaltic pump, a second peristaltic pump, a third peristaltic pump, and a fourth peristaltic pump. The RGB primary color automatic titration device as described in item 8 of the patent application scope, wherein the fourth peristaltic pump includes a flow meter. The RGB three primary color automatic titration device as described in item 8 of the patent application scope, wherein the flow rate of the fourth peristaltic pump is set between 0.5-15 ml/min. The RGB primary color automatic titration device as described in item 8 of the patent application scope, wherein the flow rates of the first peristaltic pump, the second peristaltic pump and the third peristaltic pump are set between 0.5-30 ml/min. The RGB primary color automatic titration device as described in item 1 of the patent application scope, wherein the microprocessor further includes a wireless transmission function. A method for measuring the concentration of an analyte using the RGB trichromatic automatic titration device as described in any one of patent application items 8 to 12, including: a first peristaltic pump draws a certain amount of water from a first container to titrate Barrel tank; the second peristaltic pump draws a certain amount of the tested solution from the second container to the titration barrel tank; start the servo motor to rotate the titration barrel tank; the third peristaltic pump draws a certain amount of indicator solution from the third container to the titration Barrel tank; the fourth peristaltic pump draws the titrant from the fourth container to the titration barrel tank for titration; when the sensor detects the set RGB reading conditions, the titration is terminated; the microprocessor is based on the flowmeter of the fourth peristaltic pump The feedback titrant flow rate calculates the analyte concentration in the measured solution and sends the analyte concentration to a network hard disk.

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