TXS system channel precision automatic testing device with wireless transmission function
By designing an automatic test device for channel accuracy of the TXS system with wireless transmission function, the automatic generation, acquisition and result judgment of signals are realized, which solves the problems of complex wiring and cumbersome manual operation in the existing technology and improves the test efficiency and accuracy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-26
- Publication Date
- 2026-03-27
AI Technical Summary
Existing TXS system channel accuracy testing methods require frequent changes to wiring and test signal types, are complex to operate manually, have low levels of intelligence, and rely on manual recording for test results, resulting in low efficiency.
Design an automatic test device for the channel accuracy of a TXS system with wireless transmission function. The device uses a wireless transmission module to connect to a host computer (laptop). It automatically generates and acquires signals through a signal simulation module and a signal acquisition module. It uses a programmable resistor array module and a high-precision ADC conversion chip to achieve automated testing. The host computer automatically judges the test results.
It reduces on-site wiring work, improves testing efficiency, enhances channel input accuracy, reduces human error in reading, shortens testing time, and improves the level of intelligence in testing.
Smart Images
Figure CN121748016A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of testing, and particularly relates to a TXS system channel precision automatic testing device with wireless transmission function. BACKGROUND
[0002] The reactor protection system based on the TXS platform is an important system for ensuring stable operation of the reactor, and relevant regulations have strict requirements on channel precision of the protection system. According to literature retrieval, there is no automatic testing technology and device for channel precision of the TXS system at present, and the commonly used testing method is to use a signal generator and a multimeter for testing. This method has the following shortcomings: the tester needs to frequently change the wiring and the type of testing signal, different signal types need to use different signal generators, for example, a current signal needs to be externally connected to a current signal generator, and a resistance signal needs to be externally connected to a resistance box. The increase or decrease of the input signal needs to be manually operated, which increases the working time. The collection of testing results is read by the multimeter and needs to be manually recorded in the system, and the intelligent degree is not high. SUMMARY
[0003] The application aims to provide a TXS system channel precision automatic testing device with wireless transmission function, and solve the above technical problems.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the application is as follows:
[0005] A TXS system channel precision automatic testing device with wireless transmission function, a handle is arranged on the shell, plastic covers are arranged on both sides of the shell, a panel is installed on the shell through fixing screws, a controller module, a signal simulation module, a signal acquisition module and a wireless transmission module are arranged in the shell, an upper computer is connected with the controller module, the signal simulation module, the signal acquisition module and the wireless transmission module, the controller module, the signal simulation module, the signal acquisition module and the wireless transmission module are connected with each other, and a TXS system is connected with the signal simulation module and the signal acquisition module.
[0006] The shell is made of aluminum profile and is subjected to surface electrostatic spraying treatment.
[0007] The panel is made of aluminum alloy and is subjected to surface black oxidation treatment.
[0008] The controller module adopts a single-chip microcomputer, provides three power-saving modes of sleep, shutdown and standby, and the minimum working circuit of the controller includes a reset circuit, a download JTAG interface and an external crystal oscillator circuit.
[0009] The signal simulation module generates input signals of the TXS system, including current signals, voltage signals and resistance signals.
[0010] The current output range is 0-20 mA, with 2% over-range setting; the voltage output range is 0-10 V, with 20% over-range setting, the resistance output signal adopts a high-precision, high-step resolution program-controlled resistance array module, the program-controlled resistance array module uses electromagnetic relays + real resistance network, the resistance adopts high-precision low-temperature drift non-inductive resistance, the precision is 0.01%, the temperature coefficient is 2PPM, the programmable real resistance output is realized, the output range is 0.001Ω-1MΩ, and the step precision is 0.001Ω.
[0011] The signal acquisition module acquires the voltage and current signals output by the TXS system; when the acquisition object is current, an analog switch is switched to a high-precision sampling resistor in series to realize current-to-voltage conversion; when the input is a voltage signal, the switch is disconnected, the voltage signal does not pass through the resistor, and the voltage signal is sent to the ADC after amplification for acquisition; the ADC conversion chip selects a 16-bit ADC, a standard SPI interface, and a single power supply working mode, and utilizes temperature drift curve correction technology and XFET technology to minimize the nonlinearity of voltage change with temperature.
[0012] The wireless transmission module is powered by DC 5-36V, has an RJ45 interface, and has a maximum load capacity of connecting 32 devices, and a communication distance of 1200 meters; the host computer transmits signals through the wireless transmission module, and the transmission content includes cabinet information, channel information, signal type, and precision test result.
[0013] The host computer is a notebook computer, has a man-machine interface, includes a test operation interface, a data processing interface, and a system setting interface, issues a test command, and receives a test result.
[0014] Before the test, no shutdown signal is triggered, the output signal cable is connected to the test channel, the host computer sends a trigger signal to the test device according to the signal type of the determined channel, for high-value triggering, by default, a trigger signal with a trigger setting value of 105% is sent, for low-value triggering, by default, a trigger signal with a trigger setting value of 95% is sent, when the trigger signal is sent, a time point t0 is recorded, when the reactor protection system shutdown signal / special signal relay contact reverses, a time point t1 is recorded, the reactor protection system channel response time t=t1-t0 is calculated, the maximum value of multiple test values is taken as the channel response time, the measured data is wirelessly transmitted to the host computer, the host computer automatically judges whether the data is qualified according to the judgment standard and draws a conclusion, and the test personnel exports or prints all the measured data according to the preset document template.
[0015] The beneficial effects obtained by the application are as follows:
[0016] This invention utilizes a wireless transmission controller to replace hard-wired connections, reducing on-site wiring work, improving testing efficiency, and significantly shortening testing time. The resistance signal simulation uses a programmable resistor array module, which employs an electromagnetic relay + real resistor network. The resistors are high-precision, low-temperature drift, non-inductive resistors with an accuracy of 0.01% and a temperature coefficient of 2PPM, enabling programmable real resistance output with an output range of 0.001Ω-1MΩ, thus improving channel input accuracy. Timing is measured using a crystal oscillator, with an error in the microsecond range, reducing human error compared to traditional methods of manually reading high-speed recorder waveforms. Each channel test uses a three-sample, maximum-value method, reducing channel uncertainty. Attached Figure Description
[0017] Figure 1 This is an outline drawing of an automatic channel accuracy testing device for a TXS system with wireless transmission capabilities.
[0018] Figure 2 This is a structural diagram of an automatic channel accuracy testing device for a TXS system with wireless transmission capability.
[0019] Figure 3 This is a flowchart of an automatic testing method for channel accuracy in a TXS system with wireless transmission capabilities. Detailed Implementation
[0020] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.
[0021] An automatic channel accuracy testing device for a TXS system with wireless transmission capability includes a controller module 7, a signal simulation module 6, a signal acquisition module 8, a wireless transmission module 9, a host computer 10, a housing 1, a plastic cover 2, a handle 3, a panel 4, and fixing screws 5. The housing 1 is made of aluminum profile with electrostatic powder coating. The panel 4 is made of aluminum alloy with black anodized finish. A handle 3 is provided on the housing 1, and plastic covers 2 are located on both sides of the housing 1. The panel 4 is mounted on the housing 1 using fixing screws 5. The controller module 7, signal simulation module 6, signal acquisition module 8, and wireless transmission module 9 are housed inside the housing 1. The host computer 10 is connected to the controller module 7, signal simulation module 6, signal acquisition module 8, and wireless transmission module 9. The controller module 7, signal simulation module 6, signal acquisition module 8, and wireless transmission module 9 are interconnected. The TXS system is connected to the signal simulation module 6 and signal acquisition module 8.
[0022] The controller module 7 is installed inside the device and uses microcontroller technology, providing three power-saving modes: sleep, stop, and standby. The controller's minimum operating circuit includes a reset circuit, a JTAG download interface, and an external crystal oscillator circuit.
[0023] Signal simulation module 6 is used to generate input signals for the TXS system, including current, voltage, and resistance signals. The current output range is 0–20mA with a 2% over-range setting; the voltage output range is 0–10V with a 20% over-range setting. The resistance output signal uses a high-precision, high-step-resolution programmable resistor array module. This module uses electromagnetic relays and a real resistor network, employing high-precision, low-temperature drift, non-inductive resistors with an accuracy of 0.01% and a temperature coefficient of 2PPM. It enables programmable real resistance output with an output range of 0.001Ω–1MΩ and a step accuracy of 0.001Ω.
[0024] Signal acquisition module 8 acquires the voltage and current signals output by the TXS system. When the input is current, an analog switch is used to switch to a series high-precision sampling resistor to convert current to voltage. When the input is a voltage signal, the switch is turned off, and the voltage signal bypasses the resistor. The voltage signal is amplified and then sent to the ADC for acquisition. The ADC conversion chip is a 16-bit ADC with a standard SPI interface and operates on a single power supply. Temperature drift curve correction technology and XFET technology are used to minimize the nonlinearity of voltage changes with temperature.
[0025] The wireless transmission module 9 is powered by DC 5-36V, uses an RJ45 interface, and can connect up to 32 devices with a communication distance of 1200 meters. The host computer and testing device transmit signals wirelessly. Transmitted information includes rack information, channel information, signal type, and accuracy test results.
[0026] The host computer 10 is a laptop computer with a human-machine interface, including an experimental operation interface, a data processing interface, and a system settings interface. It communicates wirelessly with the testing device, issues test commands, and receives test results.
[0027] System initialization ensures no reactor shutdown signal triggers before the test. Determine the test channel and connect the test device's output signal cable to the test channel. Trigger signal: The host computer wirelessly sends a trigger signal to the test device based on the signal type of the determined channel. For high-value triggers, a trigger signal of 105% of the trigger setting is sent by default; for low-value triggers, a trigger signal of 95% of the trigger setting is sent by default. Trigger time acquisition: When the trigger signal is issued, record time point t0 and return to signal acquisition. When the reactor protection system shutdown signal / dedicated signal relay contact reverses, record time point t1. Calculate the reactor protection system channel response time. The test device calculates the channel response time t = t_0. 1-t0: Multiple tests are conducted, and the maximum value is taken as the response time for this channel. Wireless data transmission: The testing device wirelessly transmits the measured data to the host computer. Test conclusions: The host computer automatically determines whether the data is qualified and draws a conclusion based on the judgment criteria. Data export: Test personnel can export or print all measured data according to preset document templates.
Claims
1. An automatic testing device for channel accuracy of a TXS system with wireless transmission function, characterized in that: The outer casing has a handle and plastic covers on both sides. The panel is mounted on the outer casing with screws. Inside the outer casing are a controller module, a signal simulation module, a signal acquisition module, and a wireless transmission module. The host computer is connected to the controller module, signal simulation module, signal acquisition module, and wireless transmission module. The controller module, signal simulation module, signal acquisition module, and wireless transmission module are interconnected. The TXS system is connected to the signal simulation module and signal acquisition module.
2. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: The outer shell is made of aluminum profile with electrostatic spraying treatment on the surface.
3. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: The panel is made of aluminum alloy with a black anodized finish.
4. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: The controller module uses a microcontroller and provides three power-saving modes: sleep, stop, and standby. The minimum operating circuit of the controller includes a reset circuit, a JTAG download interface, and an external crystal oscillator circuit.
5. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: The signal simulation module generates the input signals of the TXS system, including current signals, voltage signals, and resistance signals.
6. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 5, characterized in that: The current output range is 0–20mA with a 2% over-range setting; the voltage output range is 0–10V with a 20% over-range setting. The resistance output signal uses a high-precision, high-step resolution programmable resistor array module. The programmable resistor array module uses an electromagnetic relay + real resistor network. The resistors are high-precision, low-temperature drift, non-inductive resistors with an accuracy of 0.01% and a temperature coefficient of 2PPM, realizing programmable real resistance output with an output range of 0.001Ω-1MΩ and a step accuracy of 0.001Ω.
7. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: The signal acquisition module acquires the voltage and current signals output by the TXS system. When the acquisition target is current, an analog switch is used to switch to a series high-precision sampling resistor to achieve the conversion from current to voltage. When the input is a voltage signal, the switch is turned off, and the voltage signal does not pass through the resistor. The voltage signal is amplified and then sent to the ADC for acquisition. The ADC conversion chip is a 16-bit ADC with a standard SPI interface and a single power supply operation mode. Temperature drift curve correction technology and XFET technology are used to minimize the nonlinearity of voltage changes with temperature.
8. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: The wireless transmission module is powered by DC5-36V, has an RJ45 interface, a maximum load capacity of 32 connected devices, and a communication distance of 1200 meters. The host computer transmits signals through the wireless transmission module, and the transmitted content includes rack information, channel information, signal type, and accuracy test results.
9. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: The host computer is a laptop computer with a human-machine interface, including an experimental operation interface, a data processing interface, and a system settings interface. It issues test commands and receives test results.
10. The automatic channel accuracy testing device for a TXS system with wireless transmission function according to claim 1, characterized in that: Before the test, ensure that no reactor shutdown signal is triggered. Connect the output signal cable to the test channel. The host computer wirelessly sends a trigger signal to the test device according to the signal type of the determined channel. For high-value triggers, the default trigger signal is 105% of the trigger setting. For low-value triggers, the default trigger signal is 95% of the trigger setting. When the trigger signal is sent, record the time point t0. When the reactor protection system shutdown signal / dedicated signal relay contact reverses, record the time point t1. Calculate the reactor protection system channel response time t = t1 - t0. Take the maximum value from multiple tests as the response time of this channel. The measured data is wirelessly transmitted to the host computer. The host computer automatically judges whether the data is qualified according to the judgment criteria and draws a conclusion. The test personnel export or print all the measured data according to the preset document template.