Unlock instant, AI-driven research and patent intelligence for your innovation.

Real-time zero-returning control method

A control method and technology of a logic control module, applied in the field of real-time zero return control, can solve problems such as image uniformity instability, and achieve the effect of solving image uniformity instability and avoiding offset accumulation.

Active Publication Date: 2013-01-09
HAMAMATSU PHOTONICS MEDICAL TECH (LANGFANG) CO LTD
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above-mentioned deficiencies of the prior art, the present invention provides a real-time zero-return control method, which can recover the offset change caused by the change of the input signal in real time, and effectively solve the problem of unstable image uniformity

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Real-time zero-returning control method
  • Real-time zero-returning control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The basic idea of ​​the present invention is: aiming at the problem of unstable image uniformity, the present invention provides a real-time zero-return control method, after the system is powered on, the adjustable signal amplifier is cycled back to zero according to the clock of the logic control module, so that Real-time recovery of bias changes caused by input signal changes, avoiding the accumulation of bias changes.

[0018] The real-time zero return control method of the present invention includes an adjustable signal amplifier, a logic control module provided with a clock, and a bias adjustment module, and the output bias of the adjustable signal amplifier is processed by the bias adjustment module under the action of the logic control module Used as input offset compensation for adjustable signal amplifiers. The logic control module adopts a single-chip microcomputer or other programmable logic control chips, which are used to send out adjustment control signal...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a real-time zero-returning control method, belonging to the medical instrument field, comprising an adjustable signal amplifier, wherein the method can perform cyclic zero-returning for the adjustable signal amplifier after energizing so as to recover offset changes caused by the change of the input signal in real time, the accumulation of the offset changes is avoided, and the problem that the image uniformity is not stable is solved.

Description

technical field [0001] The invention relates to the field of medical instruments, in particular to a real-time zero return control method. Background technique [0002] In the field of medical instruments, photomultiplier tubes are usually used as detectors, but photomultiplier tubes are prone to drift due to environmental and other factors, resulting in signal baseline drift and image inhomogeneity. [0003] The current solution is to return to zero at all levels of the circuit when the system is powered on, such as using resistance-capacitance coordination, or using capacitors and diodes, or using amplifier feedback to return to zero. However, the method of returning to zero by using the capacitor is easy to return to zero due to the charging and discharging of the capacitor, and the return to zero is not clean or produces recoil, while the method of returning to zero by using the amplifier feedback can only clear small offsets, and it is not easy to cause a large offset. ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/042
Inventor 李高峰彭丽男石思超
Owner HAMAMATSU PHOTONICS MEDICAL TECH (LANGFANG) CO LTD