Nuclear power control rod rod position display system and its anti-interference display method
A display system and control rod technology, applied in nuclear power generation, nuclear engineering, nuclear reactor monitoring, etc., can solve problems such as abnormal rise and fall of potential, and inaccurate counter response, so as to overcome inaccurate counting and ensure normal operation Effect
Active Publication Date: 2017-05-31
ATOMHORIZON ELECTRIC JINAN CO LTD
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Problems solved by technology
[0005] Aiming at the inconsistency between the display in the main control room and the actual operating status of the on-site rod position due to the fact that the existing rod position display system commonly used in nuclear power is easily interfered by high-amplitude-frequency noise signals, the present invention provides a nuclear power control rod position display system. The display system and its anti-interference display method solve the problem that the counter of the display system in the main control room cannot accurately reflect the on-site rod position due to the rapid abnormal increase or decrease of the potential caused by noise interference during the pulse signal transmission process. The actual number of overlapping steps occurs
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[0018] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0019] Such as figure 1 As shown, the nuclear power control rod position display system mainly includes an analog filter circuit 3, an isolation circuit 4 and a single-chip digital filter circuit 5. The analog filter circuit 3 includes a resistor R1 connected in series to the input signal, and a digital filter circuit located behind the resistor R1 Parallel resistor R2 and capacitor C1 between the DGND ends of the power supply, the single-chip digital filter circuit 5 includes resistor R3 and capacitor C2 connected in series with the single-chip microcomputer 7, and the isolation circuit 4 includes an optocoupler 6, the The optocoupler 6 includes a light-emitting diode, and the digital filter circuit of the single-chip microcomputer also includes a timer.
[0020] The on-site pulse signal output is connected to the SIGNAL+ terminal of the analog filter...
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The invention relates to a rod position display system for a nuclear power control rod and an anti-jamming display method for the nuclear power control rod. The rod position display system for the nuclear power control rod mainly comprises an analog filter circuit, an isolating circuit and a single chip microcomputer digital filter circuit. The anti-jamming display method comprises the following steps: timing high and low level appearance time of a signal through a timer in a signal processing process; detecting whether the level state is consistent with the level state when the timer is started or not again by a single chip microcomputer only when fixed time is reached; if so, reckoning in a count value; and if not, neglecting transient high-level interference or low-voltage interference appearing within the timing time of the timer, so that the transient high-level interference or low-voltage interference is not reckoned in the count value. In the processing manner, count increase caused by high-noise interference with a high magnitude when a low-level signal is transmitted is avoided; and count decrease caused by low-noise interference with the high magnitude when a high-level signal is transmitted is avoided, so that the problem that the counter is inaccurate to count is solved.
Description
technical field [0001] The invention relates to a nuclear power control rod position display system and an anti-interference display method thereof which can filter out high-amplitude noise signal interference, prevent the rod position display system from counting errors caused by noise, and thus cannot accurately display the reactor reaction status . Background technique [0002] During the reaction of nuclear power reactors, raising the control rods will weaken the reactor's response capability, and dropping the control rods will enhance the reactor's response capability. The control rods are located in the nuclear island. When the fuel is reacting, people cannot observe the reaction of the reactor on site. The position and status of the control rods must be obtained remotely. Generally, the lifting or falling of the control rods is sent through the rod control system. The pulse signal of the nuclear power control rod is processed and controlled by the rod position displa...
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IPC IPC(8): G21C17/10
CPCG21C17/10Y02E30/30
Inventor 李苏
Owner ATOMHORIZON ELECTRIC JINAN CO LTD