X-ray diagnosis system and anode-rotating coil driver

Patent metadata

Field	Value
Publication number	US-10660189-B2
Application number	US-201815987434-A
Country	US
Kind code	B2
Filing date	May 23, 2018
Priority date	May 23, 2017
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

An X-ray diagnosis system comprises an inter-capacitor terminal, a first inter-switching-element terminal, a second inter-switching-element terminal, and a third inter-switching-element terminal, wherein the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply three-phase alternating current power, and the inter-capacitor terminal and two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply two-phase alternating current power.

First claim

What is claimed is:

1. An X-ray diagnosis system comprising:
an inter-capacitor terminal that is provided between two capacitors that are serially connected to each other;
a first inter-switching-element terminal that is provided between two first switching elements that are serially connected to each other;
a second inter-switching-element terminal that is provided between two second switching elements that are serially connected to each other; and
a third inter-switching-element terminal that is provided between two third switching elements that are serially connected to each other, wherein
the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply three-phase alternating current power, and the inter-capacitor terminal and two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal are configured to supply two-phase alternating current power.

2. The X-ray diagnosis system according to claim 1 , further comprising switching circuitry configured to switch to connect the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal, and to connect the inter-capacitor terminal and the two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal.

3. The X-ray diagnosis system according to claim 1 , wherein a three-phase full-bridge inverter circuit is formed by connecting the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal to three respective coils included in a first X-ray tube that is driven by three-phase alternating current power.

4. The X-ray diagnosis system according to claim 2 , wherein a three-phase full-bridge inverter circuit is formed by connecting the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal to three respective coils included in a first X-ray tube that is driven by three-phase alternating current power.

5. The X-ray diagnosis system according to claim 1 , wherein a single-phase half bridge inverter circuit is formed by connecting the inter-capacitor terminal to a common terminal of a second X-ray tube that is driven by two-phase alternating current power, and by connecting two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal to two respective coils included in the second X-ray tube.

6. The X-ray diagnosis system according to claim 2 , wherein a single-phase half bridge inverter circuit is formed by connecting the inter-capacitor terminal to a common terminal of a second X-ray tube, and by connecting two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal to two respective coils included in the second X-ray tube driven by two-phase alternating current power.

7. The X-ray diagnosis system according to claim 3 , wherein a single-phase half bridge inverter circuit is formed by connecting the inter-capacitor terminal to a common terminal of a second X-ray tube, and by connecting two of the first inter-switching-element terminal, the second inter-switching-element terminal, and the third inter-switching-element terminal to two respective coils included in the second X-ray tube driven by two-phase alternating current power.

8. The X-ray diagnosis system according to claim 1 , further comprising switching element driving circuitry configured to control ON and OFF of each of the switching elements in such a manner that a three-phase alternating current is supplied to a first X-ray tube that is driven by three-phase alternating current power, and to control ON and OFF of the switching elements to generate a two-phase alternating current for a second X-ray tube that is driven by two-phase alternating current power.

9. The X-ray diagnosis system according to claim 2 , further comprising switching element driving circuitry configured to control ON and OFF of each of the switching elements in such a manner that a three-phase alternating current is supplied to a first X-ray tube that is driven by three-phase alternating current power, and to control ON and OFF of the switching elements to generate a two-phase alternating current for a second X-ray tube that is driven by two-phase alternating current power.

10. The X-ray diagnosis system according to claim 3 , further comprising switching element driving circuitry configured to control ON and OFF of each of the switching elements in such a manner that a three-phase alternating current is supplied to a first X-ray tube that is driven by three-phase alternating current power, and to control ON and OFF of the switching elements to generate a two-phase alternating current for a second X-ray tube that is driven by two-phase alternating current power.

11. The X-ray diagnosis system according to claim 7 , further comprising switching element driving circuitry configured to control ON and OFF of each of the switching elements in such a manner that a three-phase alternating current is supplied to a first X-ray tube that is driven by three-phase alternating current power, and to control ON and OFF of the switching elements to generate a two-phase alternating current for a second X-ray tube that is driven by two-phase alternating current power.

12. The X-ray diagnosis system according to claim 7 , wherein
the first X-ray tube and the second X-ray tube are driven by a predetermined voltage,
an input voltage to the three-phase full-bridge inverter circuit is the predetermined voltage, and
an input voltage to the single-phase half bridge inverter circuit is a voltage twice the predetermined voltage.

13. The X-ray diagnosis system according to claim 11 , wherein
the first X-ray tube and the second X-ray tube are driven by a predetermined voltage,
an input voltage to the three-phase full-bridge inverter circuit is the predetermined voltage, and
an input voltage to the single-phase half bridge inverter circuit is a voltage twice the predetermined voltage.

14. The X-ray diagnosis system according to claim 1 , further comprising:
AC/DC converter circuitry configured to generate a direct-current voltage from an alternating current supplied from a power source;
a step-up/step-down converter that is inserted between the AC/DC converter circuitry and the two capacitors, and configured to apply a voltage resultant of stepping up or stepping down the direct-current voltage to the two capacitors; and
step-up/step-down switching circuitry configured to switch to a configuration in which the step-up/step-down converter steps up the direct-current voltage, a configuration in which the step-up/step-down converter steps down the direct-current voltage, and to a configuration in which the step-up/step-down converter does neither step up nor step down the direct-current voltage.

15. The X-ray diagnosis system according to claim 2 , further comprising:
AC/DC converter circuitry configured to generate a direct-current voltage from an alternating current supplied from a power source;
a step-up/step-down converter that is inserted between the AC/DC converter circuitry and the two capacitors, and configured to apply a voltage resultant of stepping up or stepping down the direct-current voltage to the two capacitors; and
step-up

Assignees

• Canon Medical Systems Corp

Inventors

• Ishiyama Fumio

Classifications

• A61B6/40

  Arrangements for generating radiation specially adapted for radiation diagnosis · CPC title

• H01J35/10

  Rotary anodes; Arrangements for rotating anodes; Cooling rotary anodes · CPC title

• A61B6/42

  Arrangements for detecting radiation specially adapted for radiation diagnosis · CPC title

• A61B6/0407

  Supports, e.g. tables or beds, for the body or parts of the body · CPC title

• H05G1/56

  Switching-on; Switching-off · CPC title