Fully-digital distributed scintillation crystal lifting furnace control system

A scintillation crystal, all-digital technology, applied in the direction of total factory control, total factory control, electrical program control, etc., can solve the problems of large interference, achieve the effect of convenient centralized monitoring, strong stability, and avoid interruption of the growth process

Inactive Publication Date: 2016-06-29
RAYCAN TECH CO LTD SU ZHOU
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Problems solved by technology

Analog signals are susceptible to various interferences, especially in the scintillation crystal pulling furnace control system, due to the existence of intermediate frequency, the interference is relatively large

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  • Fully-digital distributed scintillation crystal lifting furnace control system

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Embodiment Construction

[0035] The invention discloses an all-digital collection and distribution scintillation crystal pulling furnace control system, which has the characteristics of higher degree of automation, more concentrated display operation and management analysis, stronger anti-interference ability and the like. This distributed control system is based on programmable controllers, and has the advantages of decentralized control functions, centralized display and operation, taking into account division and autonomy and comprehensive coordination.

[0036] Such as figure 1 As shown, the fully digitalized collection and distribution scintillation crystal pulling furnace control system disclosed in the present invention includes a host computer, a control module and an execution module, and the control module communicates with the host computer and the execution module respectively. The execution module includes an intermediate frequency heating module to control the temperature of the growth f...

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Abstract

A fully-digital distributed scintillation crystal lifting furnace control system includes an upper computer, an intermediate-frequency heating module, a weighing module, and a crystal growth control module. A control module communicates with the weighing module to obtain a weighing signal, the control module communicates with the intermediate-frequency heating module to set a power value and read an intermediate-frequency parameter, the control module communicates with the upper computer to upload a monitoring signal and receive an operating command, and all the communication is digital and greatly improves the control accuracy of the system. The system provided by the invention is designed based on the ideal of a distributed control system. The control module and the upper computer are mutually independent in function, so that crystal growth control can get rid of software of the upper computer and normally proceed, and hidden danger brought by faults of the upper computer is prevented. Meanwhile, one upper computer can be connected with multiple lower computer control modules, so that crystal growth can be monitored in a more concentrated manner, and equipment and manpower costs are reduced greatly.

Description

technical field [0001] The invention relates to the field of scintillation crystal pulling furnaces, in particular to an all-digital collection and distribution scintillation crystal pulling furnace control system. Background technique [0002] The pulling method, also known as the Czochralski method, is a method invented by J. Czochralski in 1917 to grow high-quality single crystals from a melt. In order to achieve defined crystal growth, the diameter of the crystal must be controlled during the growth process. [0003] Inorganic scintillation crystals LYSO and YSO are widely used in radiation detection and large-scale nuclear medical imaging equipment. At present, domestic scintillation crystal pulling furnaces generally adopt a control system based on a host computer and a temperature control meter, and the crystal growth control must rely on the software of the host computer. Because the crystal growth cycle is very long, computer crashes and software crashes will caus...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/418
CPCY02P90/02
Inventor 郑睿肖鹏林立谢庆国
Owner RAYCAN TECH CO LTD SU ZHOU
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