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Anode rotational frequency detection method, apparatus and device

A technology of rotation frequency and detection method, which is applied in the field of X-ray tubes, can solve problems such as complicated process and increased cost of X-ray tubes, and achieve the effect of reducing detection costs

Active Publication Date: 2018-05-25
BEIJING NEUSOFT MEDICAL EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existing technology detects the rotation frequency of the anode target by installing a speed sensor inside the X-ray tube, but this solution is complex and will greatly increase the cost of the X-ray tube

Method used

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  • Anode rotational frequency detection method, apparatus and device
  • Anode rotational frequency detection method, apparatus and device
  • Anode rotational frequency detection method, apparatus and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] see figure 1 , which is a flow chart of a method for detecting the rotation frequency of an anode target provided in Embodiment 1 of the present invention.

[0053] The method for detecting the rotation frequency of the anode target provided in this embodiment includes the following steps:

[0054] Step S101: Obtain the sampling signal output by the X-ray detector, the sampling signal is a signal related to the degree of X-ray attenuation during the CT scan.

[0055] CT (Computed Tomography, computerized tomography) equipment includes an X-ray tomography device and a computer system. The former includes an X-ray tube that generates X-rays and an X-ray detector (Detector) that receives X-rays. The latter mainly includes a data acquisition system. , central processing system, console, etc.

[0056]Wherein, the X-ray detector is a device that converts X-ray energy into electrical signals that can be recorded. It receives X-rays that pass through a scanned object with a ...

Embodiment 2

[0074] The difference between this embodiment and the first embodiment is that in the first embodiment, the rectification frequency information in the sampled signal is excluded through a preset frequency range when the sampled signal is a frequency domain signal, while in this In an embodiment, exclusion may be performed when the sampling signal is a time-domain signal.

[0075] see Figure 4 , which is a flow chart of a method for detecting the rotational frequency of an anode target provided by Embodiment 2 of the present invention.

[0076] The method for detecting the rotation frequency of the anode target provided in this embodiment includes the following steps:

[0077] Step S201: Obtain a sampling signal of a first channel and a sampling signal of a second channel of the X-ray detector, the first channel and the second channel are located in different rows.

[0078] Step S202: Normalize the sampling signal of the first channel and the sampling signal of the second ch...

Embodiment 3

[0091] see Figure 7 , which is a structural block diagram of an anode target rotation frequency detection device provided in Embodiment 3 of the present invention.

[0092] The anode target rotation frequency detection device provided in this embodiment includes: a sampling signal acquisition unit 101, a conversion unit 102 and an identification unit 103;

[0093] Wherein, the sampling signal acquisition unit 101 is configured to acquire the sampling signal output by the X-ray detector, and the sampling signal is a signal about the degree of X-ray attenuation during the CT scan;

[0094] The conversion unit 102 is configured to convert the sampling signal from the time domain to the frequency domain to obtain a frequency domain signal;

[0095] The identification unit 103 is configured to identify the frequency as the rotation frequency of the anode target if there is only one frequency with a non-zero amplitude within the preset frequency range in the frequency domain signa...

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Abstract

The embodiments of the invention disclose an anode rotational frequency detection method, apparatus and device, which reduce the detection cost of an anode rotational frequency. The method herein includes the following steps: acquiring a sample signal that is output by an X-ray detector, wherein the sample signal is a signal related to X-ray attenuation level in the time period of executing CT scanning; converting the sample signal from time domain to frequency domain and obtaining a frequency domain signal; and if the frequency domain signal in a preset range of frequencies has and only has one frequency with a non-zero magnitude, recognizing the frequency as the rotational frequency of the anode.

Description

technical field [0001] The invention relates to the field of X-ray tubes, in particular to a method, device and equipment for detecting the rotation frequency of an anode target. Background technique [0002] X-ray tubes are vacuum diodes that work at high voltages. Contains two electrodes: one is a filament for emitting electrons, which acts as a cathode, and the other is a target for receiving electron bombardment, which acts as an anode. The power supply part of the X-ray tube at least includes a low-voltage power supply for heating the filament and a high-voltage power supply for applying high voltage to the two poles. When the filament passes enough current to generate an electron cloud, and a sufficient voltage (kilovolt level) is applied between the anode and cathode, the electron cloud is pulled toward the anode. At this time, the electrons hit the anode target with high energy and high speed. When the high-speed electrons reach the target surface, their movement i...

Claims

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Application Information

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IPC IPC(8): G01P3/44
CPCG01P3/44
Inventor 蒋哲文
Owner BEIJING NEUSOFT MEDICAL EQUIP CO LTD
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