Pulse signal multiplication cycle test system for the out-of-core nuclear test system

Abstract

A pulse signal multiplication period test system for an out-of-core nuclear measurement system comprises a test subsystem and a control subsystem, wherein the test subsystem comprises a power supply subsystem, a processing subsystem and a conditioning subsystem; in the test subsystem, the power supply subsystem supplies power to the processing subsystem, the conditioning subsystem and the control subsystem; the processing subsystem comprises a management module, which is connected to a controller module in the control subsystem; the conditioning subsystem comprises a high-voltage module, an amplifier module and an operation unit, wherein the operation unit is connected to a digital quantity input module, a digital quantity output module and a function signal generator in the control subsystem; and the high-voltage module and the amplifier module are both connected to the operation unit; the control subsystem comprises a display unit, which is connected to the controller module, and the controller module is connected to the function signal generator.

Description

Technical Field

[0001] This patent relates to the technical field of collecting count rate signals of nuclear detectors in an out-of-core nuclear measurement system, and specifically to a pulse signal multiplication period testing system and method for an out-of-core nuclear measurement system. Background Art

[0002] In the prior art, the count rate signal of the proportional counter tube detector is collected by mostly using pure analog devices, which are plug-in components, and the collected count rate signal is converted into a logarithmic voltage signal for processing, and the collection accuracy is not high. Alternatively, the count rate signal conversion uses a manual knob switch to switch the range, which is time-consuming and cumbersome. Summary of the invention

[0003] The purpose of the present invention is to provide a wide range acquisition and automatic switching device for counting rate signals, so as to realize the acquisition of the multiplication period of nuclear detector pulse signals in the out-of-core nuclear measurement system, and achieve functions such as wide range measurement, automatic range gear switching, and high-precision acquisition.

[0004] The technical solution of the present invention is as follows: a pulse signal multiplication period test system for an out-of-core nuclear test system, comprising a test subsystem and a control subsystem, wherein the test subsystem comprises a power supply subsystem, a processing subsystem and a conditioning subsystem;

[0005] In the test subsystem, the power subsystem supplies power to the processing subsystem, the conditioning subsystem and the control subsystem;

[0006] The processing subsystem includes a management module, which is connected to the controller module in the control subsystem;

[0007] The conditioning subsystem includes a high voltage module, an amplifier module, and an operation unit, wherein the operation unit is connected to the digital input module, the digital output module, and the function signal generator in the control subsystem; and the high voltage module and the amplifier module are both connected to the operation unit;

[0008] The control subsystem comprises a display unit, the display unit is connected to a controller module, and the controller module is connected to a function signal generator.

[0009] The power subsystem introduces 220V DC power.

[0010] The conditioning subsystem converts the small current signal of the detector into a voltage signal.

[0011] The management module is connected to the controller module 9 in the control subsystem 5 via an RJ45 network interface.

[0012] The remarkable effects of the present invention are:

[0013] 1. The signal automatically switches the range and period gear, the function signal generator outputs current, and the current output range is wide.

[0014] 2. High acquisition accuracy and high anti-interference ability.

[0015] 3. The automated testing method is adopted, which is easy to test, reduces manpower and working hours costs, and realizes automated testing of equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the counting rate signal multiplication period test system of the out-of-core nuclear measurement system;

[0017] In the figure: 1 test subsystem, 2 control subsystem, 3 power subsystem, 4 processing subsystem, 5 conditioning subsystem; 6 display unit, 7 digital input module, 8 digital output module, 9 controller module, 10 function signal generator, 11 management module, 12 high voltage module, 13 amplifier module, 14 operation unit. DETAILED DESCRIPTION

[0018] The pulse signal multiplication period test system of the out-of-core nuclear test system includes a test subsystem 1 and a control subsystem 2. The test subsystem 1 includes a power supply subsystem 3, a processing subsystem 4 and a conditioning subsystem 5.

[0019] In the test subsystem 1, the power supply subsystem 3 introduces a 220V DC power supply to supply power to the processing subsystem 4, the conditioning subsystem 4 and the control subsystem 2. After the test subsystem 1 gives a test access signal enable, it reads and identifies whether the threshold voltage value is within the working voltage. If so, the control instruction issued by the control subsystem 2 starts the pulse period doubling test and sends the period doubling frequency to the conditioning subsystem 5. The processed data is then sent to the processing subsystem 4.

[0020] The conditioning subsystem 5 includes a high voltage module 12, an amplifier module 13, and an operation unit 14, wherein the operation unit 14 is connected to the digital input module 7, the digital output module 8, and the function signal generator 10 in the control subsystem 5. The main function of the conditioning subsystem 5 is to output the detector's count rate signal to the processing subsystem 4 after two-stage amplification, discrimination, shaping, and isolation, and meet the accuracy and response time required by the system. The amplifier module 13 in the conditioning subsystem 5 is directly connected to the detector to collect the detector's count rate signal. The operation unit 14 gives a self-test enable signal to the digital input module 7, and the digital output module 8 sets the amplifier module 13 to the self-test mode. The processing subsystem 4 converts the received count rate signal into an analog 4-20mA current signal; it also includes a power supply processing module, a voltage isolation output module, a gear and working mode isolation control module, and data processing of the board state monitoring module. It mainly realizes signal gear adjustment, count rate signal amplification, and isolation output to the conditioning subsystem 5.

[0021] The control subsystem 2 includes a display unit 6, which is connected to a controller module 9, which is connected to a function signal generator 10. After the digital input module 7 in the control subsystem 2 detects that the operating unit 14 in the test subsystem 1 sends a test self-test enable signal, it determines that the readback discrimination threshold voltage can start the pulse period doubling test after the working voltage, and the test command is written into the amplifier module 13. In the controller module 9, the pulse period doubling time is controlled to be 3 seconds, 6 seconds, 18 seconds and -30 seconds respectively, and the function signal generator 10 is controlled to output a current signal that increases exponentially with time. The corresponding analog data corresponding to the pulse period doubling is then calculated by the processing subsystem. There is a management module 11 in the processing subsystem 4, and the management module 11 is connected to the controller module 9 in the control subsystem 5 through the RJ45 network interface, and the pulse period doubling data of the processing subsystem in the subsystem 11 is read through the interface.

Claims

1. A pulse signal multiplication period test system for an out-of-core nuclear test system, characterized by: The system comprises a test subsystem (1) and a control subsystem (2), wherein the test subsystem (1) comprises a power subsystem (3), a processing subsystem (4) and a conditioning subsystem (5); In the test subsystem (1), the power subsystem (3) supplies power to the processing subsystem (4), the conditioning subsystem (5) and the control subsystem (2); The processing subsystem (4) includes a management module (11), and the management module (11) is connected to the controller module (9) in the control subsystem (5); The conditioning subsystem (5) comprises a high voltage module (12), an amplifier module (13), and an operating unit (14), wherein the operating unit (14) is connected to a digital quantity input module (7), a digital quantity output module (8), and a function signal generator (10) in the control subsystem (5); and the high voltage module (12) and the amplifier module (13) are both connected to the operating unit (14); The control subsystem (2) comprises a display unit (6), the display unit (6) is connected to a controller module (9), and the controller module (9) is connected to a function signal generator (10).

2. The current signal multiplication period test system of the out-of-core nuclear measurement system according to claim 1 is characterized by: The power subsystem (3) introduces a 220V DC power supply.

3. The current signal multiplication period test system of the out-of-core nuclear measurement system according to claim 1 is characterized by: The conditioning subsystem (5) converts the small current signal of the detector into a voltage signal.

4. The current signal multiplication period test system of the out-of-core nuclear measurement system according to claim 1 is characterized by: The management module (11) is connected to the controller module (9) in the control subsystem (2) via an RJ45 network interface.

Images