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Modular digital nuclear measuring apparatus

A nuclear measurement and modular technology, applied in the field of nuclear measurement instruments, can solve the problems of module or product redundancy, waste of product resources, etc., and achieve the effect of low temperature drift and strong anti-interference ability

Active Publication Date: 2017-03-22
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, in the existing analog technology, a set of products is designed and developed for each measurement device; in the digital technology, the signal measurement and signal processing modules are arranged in different devices, and there are redundancy of some modules or products, which is a great waste product resources

Method used

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  • Modular digital nuclear measuring apparatus

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Embodiment 1

[0023] Such as figure 1 as shown,

[0024] Modular digital nuclear measurement device, including CPU, IO board, AT96 bus, special board for nuclear measurement, and a low-voltage unit that converts 220V AC power into DC power and supplies power to other modules.

[0025] The IO board includes an input board, an output board, and a communication card. The input board, the output board, and the communication card are all connected to the CPU through the AT96 bus, and the special nuclear measurement board is connected to the input board.

[0026] The low-voltage unit is also connected with the CPU, the IO board and the nuclear measurement special board to supply power for these modules.

[0027] In this embodiment, the CPU is an X86-based CPU, the communication card is a CAN communication card, and the CPU has an Ethernet port and a CAN bus interface.

[0028] The special board for nuclear measurement is mainly used for the measurement of current, pulse number or nuclear power ...

Embodiment 2

[0033] On the basis of Embodiment 1, in this embodiment, the IO board is further improved as follows:

[0034] Such as figure 2 As shown, the IO board includes a microprocessor, a dual-port RAM and a general-purpose board, and one of the left and right ports of the dual-port RAM is connected to the microprocessor through a set of data bus, control bus and address bus , the other port is also connected to the AT96 bus through a set of data bus, control bus and address bus; the general-purpose board is connected to the dual-port RAM, the microprocessor and the AT96 bus.

[0035] In this embodiment, the general-purpose board adopts a programmable logic device (CPLD), which is also connected with a base address encoding module; the base address encoding module is used for the processor to distinguish different types of general-purpose boards and perform data interaction with them; different general-purpose The boards have different base addresses in the base address encoding mod...

Embodiment 3

[0039] The professional cards used for nuclear instrument design usually include: amplification, high voltage, etc. Therefore, on the basis of Embodiment 1 or Embodiment 2, the following improvements are made to the modular digital nuclear measurement device in this embodiment:

[0040] The nuclear measurement special board includes an amplification unit and a high-voltage unit. The high-voltage unit mainly converts the external 220V AC of the nuclear measurement device into a DC power supply to supply power to other modules in the device; the amplification unit includes a pulse counting card, a wide range card, a logarithmic One or more of the current card, linear current card, and nuclear power card, the corresponding board is selected according to the actual measurement needs, and the selected board is connected to the custom interface of the input board.

[0041] The parameters of the amplifier unit, high voltage unit and low voltage unit in this embodiment are as follows:...

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Abstract

The invention, which relates to the nuclear measuring instrument field, discloses a modular digital nuclear measuring apparatus comprising a CPU, an IO board card, buses, a low-voltage unit for converting a 220-V alternating-current power source into a direct-current power source, and a special-purpose nuclear measuring board card. The IO board card consists of an input board card, an output board card, and a communication card; and the input board card, the output board card, and the communication card are connected with the CPU by buses. The special-purpose nuclear measuring board card is connected with the input board card. The low-voltage unit is connected with the CPU, the IO board card, and the special-purpose nuclear measuring board card and provides power for the CPU, the IO board card, and the special-purpose nuclear measuring board card. According to the invention, the modular structure and digitalization of the reactor nuclear measuring apparatus are realized; and requirements of low-temperature drift, high anti-interference capability, communication transmission, and value calculation of the nuclear measuring instrument can be met. The redundancy module is reduced, so that the universal module can be used repeatedly and module saving is realized.

Description

technical field [0001] The invention relates to the field of nuclear measuring instruments, in particular to a modular digital nuclear measuring device. Background technique [0002] Nuclear measuring instruments are an important part of the reactor control and protection system. It is used to measure the nuclear power, power distribution and power change (period and change rate, etc.) of the reactor from the neutron source level to full power, and to supervise the operation and operation of the reactor Provide necessary signals for the protection system and control system of the reactor. Its protective channel part belongs to nuclear safety level (1E level) equipment, which requires high safety and high reliability. [0003] The reactor nuclear measuring instrument can measure the reactor power and process other power-related parameters by measuring the output signal of the neutron detectors arranged around the reactor. Because the range of reactor power is very wide, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G21D3/00G21D3/04
CPCG21D3/001G21D3/04Y02E30/00
Inventor 李昆曾少立刘艳阳刘立新杨戴博王银丽袁彬
Owner NUCLEAR POWER INSTITUTE OF CHINA
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