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Method and device for measuring resistances using a direct interface circuit

Resumen

Tipo:
Oferta Tecnológica
Referencia:
TOES20210519002
Publicado:
01/06/2021
Caducidad:
02/06/2022
Resumen:
A Spanish research team specialized in the field of arithmetic algorithms, has developed and patented a new method and a device to measure resistances, using a direct interface circuit, that highly reduces the measuring time in the two-points calibration method. This invention modifies the discharge method so that a fraction of the discharge is performed through the small calibration resistance instead of the resistive sensor. License agreement is sought with industrial partners of electronics sector.

Details

Tittle:
Method and device for measuring resistances using a direct interface circuit
Summary:
A Spanish research team specialized in the field of arithmetic algorithms,has developed and patented a new method and a device to measure resistances,using a direct interface circuit,that highly reduces the measuring time in the two-points calibration method.This invention modifies the discharge method so that a fraction of the discharge is performed through the small calibration resistance instead of the resistive sensor.License agreement is sought with industrial partners of electronics sector
Description:
The number of digital systems that use sensors is growing day by day. These systems require analog-to-digital signals conversion methods. The most popular way to do is by using a direct interface circuit. Due to its intermediate results in measuring time and accuracy, the most frequently used method is the two-point calibration method. However, new ways to reduce the measuring time of the direct circuit interface are needed.

In this way, researchers from a Electronics department in a Southern Spanish University have developed two new methods that reduce the measuring time up to 55% without any additional hardware costs. These methods have been compared against the traditional two-point calibration method without showing a lack of accuracy.

Two fast calibration methods, Fast Calibration Method I (FCM I) and Fast Calibration Method II (FCM II) have been tested and compared against the two-point calibration method using known values of the resistance and a field-programmable gate array operating with different voltages.

All methods have very similar curves, but FMC II shows a lower accuracy for higher resistances. Instead, the two-point method and the FMC I method show the same behavior in all the ranges.

Regarding the time reduction for estimating the resistance value, the values of TRmax (condenser discharge time) and Tmax (total time to measure resistance) for the values of the constant Tx used for comparisons. TRmax has the same value, no matter the method. However, Tmax is always smaller when using FCM II.

Reduction in TRmax against TPCM (Two-Point Calibration Method) oscillates between 17% and 62% while reduction in Tmax oscillates between 9.5% and 55%.

Companies in the electronics sector who wish to implement and commercialize the technology via license agreement are sought.
Advantages and Innovations:
The use of this invention provides two new processes to calibrate a direct interface circuit and has multiple advantages and innovations as it goes beyond the state of the art:
· Reduction of the translation time from analogic to digital up to 55%.
· Easy integration in commercial circuits.
· Translation time reduction is achieved without any additional hardware cost.
· Possibility to reach higher time reductions by sacrificing measurement precision.
Stage of Development:
Under development/lab tested
IPs:
Patent(s) applied for but not yet granted
CommeR Statunts Regarding IPR Status:
A Spanish patent has been recently filed, with the possibility to extend the protection worldwide.

Partner sought

Type and Role of Partner Sought:
Industrial partners that want to enter into a licensing agreement in order to explore the new possibility in the field of electronics. Its use is susceptible in any application in which it is necessary to read information from a resistive sensor, and especially, if the information has to be digital. Thus, any application that needs Strain Gauges, Thermoresistors, Magnetoresistors, Hygrometers, Gas Sensors, etc., can use this invention.

The potential industrial partner would obtain patent rights as a licensee to commercialize the technology at an international level.

Client

Type and Size of Client:
University
Already Engaged in Trans-National Cooperation:
Si
Languages Spoken:
English

Keywords

Technology Keywords:
01002010 Circuitos impresos y circuitos integrados
01002003 Electronic engineering
01003023 Environmental and Biometrics Sensors, Actuators
09001009 Tecnología de sensores relacionada con la realización de medidas
10002010 Tecnología de sensores remotos