TH14687A3 - Electrochemical analyzer with programmable system on a single chip - Google Patents

Abstract

1 page of the number 1 page summary of the invention The invention is the creation of a single-chip programmable electrochemical analyzer that can be fabricated from a single zipper. Which consists of An ARM® Cortex M-3 microcontroller, which controls a potential distribution control circuit that supplies electricity to the common power. And get data from the circuit Electricity meter measures the current flowing between the working electrode and the reference electrode, with its characteristic that it uses power from a computer via a high speed USB port. There is a filter circuit suing each other. Better latency than other analog to digital codecs. Can measure the electric current at It is very small and can be programmed in the range of 50 μA to 125 μA at a resolution of 10 μA to 3 picoampere. Cyclic voltammetry) amperometric (Amperometry) and Anodic stripping voltammetry.

Claims (3)

Disclaimer (all) which will not appear on the advertisement page: page 1 of the number 2 disclaimers 1.Electrochemical analyzer with programmable system on a single zipper. It consists of a voltage control circuit that supplies electric potential to the counter electrode and receives data from a current measuring circuit that measures the current flowing through it. Between the working electrode and the reference electrode, the information is changed from analog to digital. It is stored in the ROM (ROM) memory (10), a timing circuit to determine the form of potential. The PSoC 5LP microcontroller board on the zip contains Potential transducer from Digital-to-Analog (1) Digital-to-Analog Potential Converter (2) Op-amp (3) Impedance Amplifier (4) Converter Analog to digital delta sigma signal (5) Virtual ground (6) Current measurement calibrator (7) Wave amplitude control (8) High speed USB port (BFSX9) Yes The unique characteristics are The potential distribution control circuit of a programmable electrochemical analyzer on a single zip (voltage control circuit) controls the distribution of the potential to the common electrode, where the digital potential signal is sent from ARM platform microcontroller? Cortex M-3 to converter. Digital-to-Analog Potential (VDAC) (1) 8-bit resolution and converter. Digital-to-analog electric potential by doing dieter (DVDAC) (2) 12-bit resolution, which serves Converts digital potential signals to analogue. The signal is sent to the high power (3) op amp to help deliver current to the common electrode. This allows for quick determination of the electric potential at the common electrode. The current measuring circuit of a programmable electrochemical analyzer on a single zip (current measuring circuit) measures the current flowing between the electrodes. Work and reference electrodes Arising from the reduction-oxidation (redox) reaction of chemicals at the electrodes By electric current It is sent to an impedance amplifier (TIA) (4), where the received signal value is compared with the virtual ground (VDAC_TIA) (6). The current is then converted to the Impedance amplifiers (TIA) (4), which use Switched capacitor / Continuous time (SC / CT) mode to convert current to potential. electricity And the analog potential signal is converted to digital at the converter. The analog signal is a digital delta sigma (ADC DelSig) (5) with an anti-aliasing filtering circuit capable of sampling at rates up to 6 MHz and with pin resistance. An input (input impedance) that can be programmed to have a ratio between the magnitude of the Output with the signal input (gain) up to 8 times the circuit has a calibration system (calibration) a signal using an IDAC calibrate (7) which transmits a known current to the Impedance Amplifier (TIA) (4) which converts the current into an electrical potential. 2.Programmable electrochemical analyzer on a single zipper. According to claim 1, where the time-controlling cycle of the potential changeover of the systematic electrochemical analyzer can Can be programmed on a single zip (timing circuit) to determine the type of potential to suit the type of operation. Electrochemical analyzes include cyclic voltammetry, measuring chemical type and concentration. Used to measure electrical capacitance. (capacitance) and is used to measure the energy arising from the electrical potential of the 2 pages of the number 2 redox potential energy, amperometric (amperometry) measures the concentration of Chemical by time Or anodic stripping voltammetry (anodic stripping voltammetry) measure the concentration Of heavy metals in solution The wave width (PWM) controller (8) determines the time. Of the power, the electricity \ 'is supplied to the potential change control circuit, And the current measurement circuit at the electrodes Which will control The interrupt service routine works. 3.Electrochemical analyzer with programmable system on a single zip. According to claim 1 or 2, where a systematic, programmable electrochemical analyzer on a single zip can be programmed. The current can be in the range of 50 μA to 125 μA and resolution of 10 μA to 3 picoampere.