发明名称 |
MASS SPECTROMETRIC DEVICE AND MASS SPECTROMETRIC DEVICE CONTROL METHOD |
摘要 |
This mass spectrometric device is provided with a sample container (8) for placing a measurement sample (12) therein, a detector (9) analyzing the mass of a sample and detecting a drug, or the like, in the sample, a dielectric container (3) linked to the sample container for running a discharge current into air to provoke ionization, a valve (2) for sending air intermittently to the sample container, the dielectric container and the detector, a barrier discharge high-voltage power source (6) to be discharged by the dielectric container, a current detection unit (5) connected to the barrier discharge high-voltage power source for detecting a discharge current (28), a discharge-start timing detection unit (7) connected to the current detection unit for detecting the discharge-start timing based on the current detection result from the current detection unit to send a discharge-start timing signal (17), and a control unit (11) for controlling each constituent. |
申请公布号 |
US2016141163(A1) |
申请公布日期 |
2016.05.19 |
申请号 |
US201414898158 |
申请日期 |
2014.05.30 |
申请人 |
HITACHI HIGH-TECHNOLOGIES CORPORATION |
发明人 |
YAMAMOTO Akio;WATANABE Toshimitsu;OOTSUKI Shigeo;KAJIMA Kazuki;YANOKURA Toshiaki |
分类号 |
H01J49/00;H01J49/04 |
主分类号 |
H01J49/00 |
代理机构 |
|
代理人 |
|
主权项 |
1. A mass spectrometric device comprising:
a sample container for containing a measurement sample; a detector for detecting a drug and the like included in the sample by analyzing mass of the sample; a dielectric container for coupling with the sample container and for ionizing an atmosphere by making a discharge current flow through the atmosphere; a valve for intermittently sending the atmosphere to the sample container, the dielectric container, and the detector; a barrier discharge high-voltage power source for causing discharge in the dielectric container; a current detection unit connecting with the barrier discharge high-voltage power source and for detecting a discharge current; a discharge-start timing detection unit for connecting with the current detection unit and for detecting discharge-start timing based on a current detection result of the current detection unit to transmit a discharge-start timing signal; and a control unit for controlling each constituent, wherein the current detection unit converts the detected current to a voltage, and compares the converted voltage with a threshold set in the discharge-start timing detection unit, and transmits a discharge-start signal to the control unit when the converted voltage exceeds the threshold, and the control unit performs control to cause discharge for a certain period after receiving the discharge-start signal. |
地址 |
Tokyo JP |