Devcie for measuring substance ingredient

A technology for measuring device and substance composition, which is applied to measuring device, analyzing materials, and material analysis using wave/particle radiation, etc.

Inactive Publication Date: 2007-12-05
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current detection devices have the disadvantages of long detection time, complex equipmen

Method used

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  • Devcie for measuring substance ingredient
  • Devcie for measuring substance ingredient

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment 1

[0027] Tropical air pollutants are measured by using a rapid determination device for micro-material components. Since the air temperature T is higher than the standard working temperature T of the rapid determination device for micro-material components 0 Low and high, the temperature sensors 11 and 18 monitor the temperature T of the gas in the migration zone in real time, and then feed back the temperature T to the microcontroller 7, and the microcontroller 7 according to the temperature T of the gas in the migration zone and the standard operating temperature T 0 The difference value controls the driving power switch circuit of the miniature thin / thick film temperature controller array 10, 16 and automatically refrigerates the transfer tube 12, so that the transfer region is kept at the standard working temperature T 0 down to work.

specific Embodiment 2

[0028] The air pollutants in cold regions are measured by using the rapid determination device of micro-material composition. Since the air temperature T is higher than the standard working temperature T of the rapid determination device of micro-material composition 0 Low, the temperature sensors 11, 18 monitor the temperature T of the gas in the migration zone in real time, and then feed back the temperature T to the microcontroller 7, and the microcontroller 7 is based on the gas temperature T in the migration zone and the standard operating temperature T 0 The difference value controls the driving power switch circuit of the miniature thin / thick film temperature controller array 10, 16, changes the polarity of the power supply and automatically heats the transfer tube 12, so that the transfer region is kept at the standard working temperature T 0 down to work.

specific Embodiment 3

[0029] The rapid determination of micro-material components is used to determine the pesticide residues in food. Since the content of pesticide residues is generally very low, the sensitivity of the single-channel rapid determination of micro-material components is too low, so it is necessary to use the full-scan working mode. Adjust the working mode selection button on the control panel of the micro-substance rapid determination device to the full-scan working mode, and the microcontroller 7 makes all the channels work in the full-scan working mode, and the residual pesticide components are ionized into ions by the ion source 2, and the ions are in the carrier gas Driven to enter the detection channel 12, the microcontroller 7 controls the compensation voltage through the program to scan in the entire scanning voltage range. Under the joint action of the compensation voltage and the electric field generated by the high-field asymmetric waveform, different ions arrive at the cha...

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Abstract

The invention discloses a material component testing device in the rapid testing device technical domain, which comprises the following parts: ion source (2), traveling pipe (12), upper ion detector (5) and signal processing circuit (6), wherein the ion source (2) lies in the inlet of traveling pipe; the high-field asymmetrical waveform power (8) is connected with micro-controller (7); the ion detector (5) is connected with the signal processing circuit (6), which connects the micro-controller (7); the detected sample reaches the ion source (2) anchored by carrying gas, which is ionized into the traveling pipe (12) and detected by ion detector (5) and processed by micro-controller to obtain the chemical component of the detected sample. The invention has microminiaturization, low power consumption, high-integrity, high sensitivity, which is fit for detecting real-time biochemical agent and explosive as well as drug and environment.

Description

technical field [0001] The invention relates to a micro-device for rapid determination of biochemical substances, in particular to a multi-channel miniature rapid determination device for material components with an on-chip temperature controller, belonging to the technical field of rapid detection devices for material components. Background technique [0002] The current detection devices all have the disadvantages of long detection time, complex equipment, bulky, high cost, poor mobility, etc., which are difficult to meet the requirements of practical use. In order to cope with possible chemical weapons attacks on the battlefield, to prevent and prevent terrorist attacks against civilians, and to maintain environmental security, it is urgent to develop environmental monitoring with high sensitivity, low power consumption, miniaturization, strong real-time performance, and high reliability. device to improve the ability to monitor the environment. [0003] This micro-mater...

Claims

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Application Information

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IPC IPC(8): G01N23/00
Inventor 唐飞王晓浩王志刚高磊
Owner TSINGHUA UNIV
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