KR100404279B1 - Water Quality Measuring System of using the PC monitor - Google Patents

Abstract

In the present invention, the concentration of hydrogen ion (pH), concentration of various ions, redox potential (ORP), dissolved oxygen (DO), electrical conductivity, salinity (Salinity) and temperature of an aqueous solution can be measured. And control thereof is directed to a water quality measurement system that is computer operated and capable of collecting and analyzing data with a computer. Not only regular computers, but also laptops can be measured by operating the instrument on a laptop power source without any other power supply.

To this end, the present invention reads the detection signal for the hydrogen ion concentration, concentration of various ions, redox potential, dissolved oxygen, electrical conductivity, salinity and temperature, and then amplifies and adjusts them appropriately according to the items to process the digital signal to input and output data. It is sent to the computer via the device RS232C.

The computer displays the received data through temperature compensation and arithmetic processing, and the correction / measurement is executed by the computer's command, and the real-time data collection and other settings are performed. The data can be saved to a file and printed to a printer.

Description

Water quality measuring system using computer monitoring system

The present invention detects and amplifies the hydrogen ion concentration (pH), the concentration of various ions, the redox potential (ORP), dissolved oxygen (DO), electrical conductivity, salinity (Salinity) and temperature of the aqueous solution with a sensor. It relates to a water quality measurement system that can be automatically, optionally or simultaneously measured, recorded and analyzed by a computer after conversion.

Conventional water quality measurement device First, there is a product that can measure the above measurement items as a single device, but these devices have limitations in storing data by using memory (RAM) in the measurement device, and comparative analysis of stored data is difficult. It is inconvenient and the measurement data is displayed on the display device in the instrument, so that the data cannot be read at the same time. Second, there is a system that automatically measures the measurement items by computer, but there is a problem that requires a separate system to buy a separate cost depending on the item.

The present invention to solve the above problems (1) the interference of hydrogen ion concentration (concentration of various ions or redox potential), dissolved oxygen, electrical conductivity (salinity) and temperature in one instrument (2) Automated system that can measure, record and analyze simultaneously and automatically by the command of computer, (3) Invent and automatically use equipment that use the power of laptop without supplying power separately. At the same time, it provides an automated system that can be easily measured and recorded and analyzed in the field.

1 is a block diagram of the present invention;

2 is a block diagram of a measuring device of the present invention

3 is an overall flow chart of the present invention.

The present invention relates to a system capable of simultaneously measuring hydrogen ion concentration (concentration of various ions or redox potential), dissolved oxygen, electrical conductivity (salinity) and temperature on a computer.

Hereinafter, the water quality measurement system according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram briefly illustrating a process of reading a value from a detector and displaying data transferred to a computer through an input / output device of a measuring device.

Figure 2 is a block diagram showing the configuration of the measuring device, Figure 3 is an overall flowchart of the present invention. According to the water quality measurement system according to the present invention, the hydrogen ion concentration (concentration of various ions or redox potential), dissolved oxygen, electrical conductivity (salinity), and temperature are read by the detector 1 as a fine current, and the amplifier 2 is read. After amplifying the fine current according to the item through the multi-channel analyzer (3) that processes these data at once, and then converts the analog signal into a digital signal from the analog-to-digital converter (4). The converted data is transferred to the computer through the input / output device RS232C. The data transfer from the measuring device to the computer is done by a computer program command, and the transferred data displays the data on the monitor after performing temperature correction or calculation processing in the computer. This data can be saved in the form of a file and output to a printer.

At this time, the measurement range and the error range are as follows.

For hydrogen ion concentration (pH), the measuring range is -2.000 ~ 19.999 and the maximum error is 0.002pH,

For the redox potential (ORP), the measuring range is -1999.9 to 1999.9 mV and the maximum error is 0.1,

In case of concentration of various ions, the measurement range is 0.00001 ~ 99,999 mg / L, error is 0.25%, dissolved oxygen is 0.00 ~ 19.99 mg / L, error is maximum 0.5%, and electrical conductivity is 0 ~ 199,999 μS / cm. The temperature is -10.0 ~ 110.0 ℃ and the error is up to 0.1 ℃.

As described above, the present invention is a system capable of measuring the hydrogen ion concentration (concentration of various ions or redox potential), dissolved oxygen, electrical conductivity (salinity) and temperature with a computer. Therefore, the data can be easily collected and the above items can be measured simultaneously, thereby facilitating the analysis of the data, thereby improving the problems of the prior art according to the data collection and analysis of the conventional method. In addition, in the case of a notebook, a small amount of current is required to use the power of the notebook without performing arithmetic processing in the measuring device and using a separate power source, so that the size of the measuring device can be considerably reduced compared to a conventional measuring device.

It can be easily used in the field by using the power of the notebook without supplying the power of the measuring device separately, which can solve the trouble of collecting and analyzing the data in the field.

Claims (3)

delete a). A detector (1) that reads and detects hydrogen ion concentration, redox potential, dissolved oxygen, electrical conductivity, salinity, and temperature with a fine current; b). An amplifying circuit 2 for amplifying the sensed minute current signal according to the item; c). A multi-channel analyzer 3 for processing each sensing signal at the same time; d). An analog / digital converter 4 for converting an analog signal into a digital signal for processing by a CPU; e). A CPU 5 for performing calculations and converting decimal values to output respective measured measurements; f). A data input / output device (RS232C) 6 for outputting data processed by the CPU to a computer; Water quality measuring device, characterized in that consisting of. delete