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Method and device for rapidly representing specific resistance value exceeding

A technology of characterization and resistance, which is applied in the direction of measuring devices, measuring resistance/reactance/impedance, instruments, etc., can solve the problems of high cost, complex and expensive multi-channel resistance, and many factors of accuracy

Inactive Publication Date: 2014-07-16
CAPITAL NORMAL UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the digital characterization method described above, the analog / digital converter is the key, and it is necessary to select devices with high resolution, fast conversion rate, and small error parameters. Therefore, this method uses devices with multiple circuits that are more complicated and factors that affect accuracy Many, high cost, if it is necessary to characterize multi-channel resistance in real time at the same time, it will be more complicated and expensive

Method used

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  • Method and device for rapidly representing specific resistance value exceeding
  • Method and device for rapidly representing specific resistance value exceeding
  • Method and device for rapidly representing specific resistance value exceeding

Examples

Experimental program
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Effect test

Embodiment 1

[0040] Embodiment 1: Based on the method for quickly characterizing a specific resistance value of the present invention, all the constituent units are prepared into a device through a printed circuit board. The device is mainly composed of a main controller, input and output interfaces, comparators, counters, reference clocks, pulse generators, buffers, enable controls, energy storage components, self-calibration units, multiple groups of ports for applying excitation and collecting responses . The device can conveniently characterize the measured object whose position is not fixed. It only needs to connect the test port of the device to the object well, and the device does not need to add any additional auxiliary equipment. The device can characterize the resistance of the measured object. Whether the value exceeds the set threshold. When any object to be characterized is stimulated, the voltage response on the energy storage component will be proportional to the resistance...

Embodiment 2

[0041] Embodiment 2: As an embedded application method of the present invention, an embedded system adopts multiple sensors, and it is a very important performance to be able to characterize the characteristic resistance of the sensor in time and quickly, such as a high temperature alarm system set by a temperature sensor. Embedding the method of the present invention can convert the resistance value representing the temperature change into the charging voltage of the energy storage component using pulse excitation. If the predetermined voltage threshold cannot be reached, it indicates that there is a difference between the response and the excitation, that is, the characteristic temperature exceeds set temperature point. The embedded method sends out an alarm signal and transmits it to the system quickly, so that the system can take measures in time to control the processing and avoid danger.

Embodiment 3

[0042] Embodiment 3: Use distributed to realize the organizational structure of fast characterization objects exceeding a specific resistance value. The distributed means that the units that constitute the entire function are not limited to be implemented in a single system, but can be implemented in different systems Realize part of the functional units separately, connect and combine all the functional units into a network, and constitute an implementation method that spans multiple systems to form a complete function. For example, all functional units except the pulse generation unit and energy storage unit are integrated in one system, and there are just enough resources in another system to be used as the pulse generation unit, and the energy storage components are arranged in the system close to the object to be characterized . In this embodiment, the resources of different systems can be rationally utilized, and the functional units can be implemented in different syste...

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Abstract

The invention provides a method and device for rapidly representing specific resistance value exceeding. The device for rapidly representing specific resistance value exceeding comprises a pulse excitation generation unit, wherein by means of the pulse excitation generation unit, whether the resistance value exceeds a set threshold value or not is represented by exerting pulse excitation which is properly configured on an energy storage assembly through one end of the pulse excitation generation unit and by collecting responses to the excitation at the other end of the pulse excitation generation unit. According to the method and the device, the complex ADC method is simplified, work efficiency is improved, the level of the representing response time is improved to the nanosecond level, and the method and the device can be easily applied to various fields.

Description

technical field [0001] The invention relates to the technical field of characterizing a specific resistance value, in particular to a method and device for quickly characterizing an object exceeding a specific resistance value. Background technique [0002] In electronic science and technology, it is often necessary to use basic characteristic resistance values, such as temperature sensors, humidity sensors, pressure sensors, acceleration sensors, etc. It is very important that said characteristic resistance values ​​can be quickly characterized. [0003] There are two conventional methods for characterizing resistance: one is the most common voltammetry using Ohm's law or its variation method, figure 1 Shown is a structure diagram of the two-terminal voltammetry characterization method, which includes a characterized resistor 13, a current limiting resistor 12, an ammeter 14 and a voltmeter 15 for measuring current. The described method is to apply a DC voltage 11 through...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/14
Inventor 刘鹏关永金声震张锐王洪民刘超
Owner CAPITAL NORMAL UNIVERSITY