National Institute of Metrology, China

Beijing Institute of Technology

Xingchuang Xiong

Xiang Fang

You Jiang

Zejian Huang

Wei Xu

Feng Tian

Zhen Liu

Muyi He

Meiying Liu

Yichuan Tang

Wenkui He

Xiaoyun Gong

Kan Kan

The present invention discloses a method for using RFID tags as carriers for digital calibration certificates and its system, which consists of following steps, i.e., generating standard DCC data; simplifying the DCC data to obtain the DCC-Lite data; after that, the DCC-Lite data is split into obtain multiple XML Lite files; and then, storing and writing multiple RFID tags in the multiple XML Lite files so that the DCC-Lite data can be spliced and restored by reading XML-Lite file information stored correspondence to the multiple RFID tags. The present invention realized unimpeded reading and application of instrument calibration information and data in the off-line state by means of simplifying, segmenting DCC files and storing them in multiple RFID tags respectively. Furthermore, the present invention may also split and store certain DCC-Lite with large amount of data in multiple RFID tags by splitting and splicing its content.

Method for using RFID tags as carriers for digital calibration certificates and its system

The present invention discloses a trusted alliance block chain digital calibration certificate system and an operation method therefor. The system comprises: a distributed ledger system () of a distributed storage system based on a hyperledger fabric; a CA system () for management of all entity identity certificates and registration of identities in the system; a UTC time calibration server () for providing a UTC time calibration service for all block chain node servers of the system; and a digital calibration certificate subsystem () for generating, by means of alliance management, instrument organization management, and calibration institution management, a digital calibration certificate from calibration certificate data by a digital signature technology, extracting related entity information, and forming original information of multiple data blocks. The system can overcome the shortcomings of existing block chain technology-based digital calibration certificate technologies by establishing a calibration chain and a traceability chain which are reliable, trusted, secure, and continuously growing.

Credible alliance blockchain digital calibration certificate system and operation method therefor

The invention proposes a mass spectrometry apparatus for ultraviolet light ionization of neutral lost molecules, and a method for operating same. The mass spectrometry apparatus for ultraviolet light ionization of neutral lost molecules includes a quadrupole tandem special linear ion trap mass analyzer, a vacuum ultraviolet lamp, a lamp front shutter, a gradient vacuum system and other necessary components for the mass spectrometry apparatus. In addition, the invention also proposes a method for operating the apparatus to efficiently store ions, fragment and analyze the ions, perform ultraviolet efficient ionization on lost neutral molecules, and then analyze the ions.

Mass spectrometry apparatus for ultraviolet light ionization of neutral lost molecules, and method for operating same

The present invention discloses a rectangular ion trap device and method for ion storage. The device comprises a front end cover including left electrode, middle layer insulator, and right electrode, wherein the left electrode and the right electrode are respectively positioned at both sides of the middle layer insulator; a rear end cover, wherein the rear end cover has the same axis as the front end cover, and the central position of the rear end cover electrode is penetrated; the front and rear electrodes and the upper and lower electrodes are symmetric along the axis of the front end cover, and these electrodes form a space region for ion storage about the axis between the front end cover and the rear end cover electrode. The present invention can increase the number of ions in storage within a unit time prominently.

Type rectangular ion trap device and method for ion storage and separation

An ion trap-based device and method for analyzing and detecting bipolar ions is provided. The device includes multiple electrodes of an ion trap; a radio frequency voltage source configured to form a radio frequency electric field; a direct current voltage source configured to form a bias electric field, positive and negative ions in the ion trap being separated by the bias electric field; a first and second detectors, configured to detect the positive and negative ions, respectively. A bipole and quadrupole field direct current voltage detection modes may be employed. A single positive ion or negative ion operation mode in a conventional biological mass spectrometry method is improved, so that the positive and negative ion modes are performed simultaneously; without any resolution loss, the analysis speed is increased, the sample consumption is reduced, and the accuracy of quantitative analysis of the samples is improved.

Ion trap-based apparatus and method for analyzing and detecting bipolar ions

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Beijing, China

Xingchuang Xiong