Digital direct reading portable calcium ion concentration detecting device

Abstract

The invention discloses a digital direct reading portable calcium ion concentration detecting device. The device is used for measuring calcium ion concentration in a body fluid. The device is formed by a calcium ion selection electrode, a reference electrode, a double high-impedance input amplification unit, a differential amplifying circuit, an anti-logarithm amplifying unit, a digital display unit and the like. The calcium ion concentration detecting device has slope adjustment, positioning and other functions. A direct current potential of the reference electrode can be adjusted, and the potential of the reference electrode can be reduced through compensation potential means. At the same time, according to a Nernst equation, a concentration value can be directly read through anti-logarithm conversion. A direct reading calcium ion meter has characteristics of a small size, simple operation, convenient carrying, stable working and the like and is suitable for real-time detection of the calcium ion concentration in the body fluid of a osteoporosis patient.

Description

technical field [0001] The invention belongs to the technical field of electrochemical calcium ion concentration measurement, and in particular relates to a detection device for weak electric signals generated by chemical signals. More specifically, it relates to a digital direct-reading portable calcium ion concentration detection device that detects the membrane potential generated on the sensitive membrane on the ion-sensitive electrode and calculates the ion activity according to the size of the membrane potential. Background technique [0002] We know that calcium is one of the most important inorganic elements in the human body, and 99% of the calcium exists in bones and teeth, so bone is a huge calcium storehouse for the human body. Osteoporosis is a disease caused by long-term bone loss. The mechanism of bone loss is that the metabolic balance between bone resorption and bone formation is broken, and bone resorption increases and bone formation decreases, resulting i...

AI Technical Summary

Problems solved by technology

Its disadvantages are that the structure is complex, the volume is large, and the operation is not convenient. At the same time, the output value of the ion meter is a voltage value, which must be brought into the regression curve. Only after calculation can the concentration of the measured ions be obtained, which is inconvenient to use. The user said that it is impossible to carry it with you and measure it in real time.

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