CN111208380A - Track circuit outdoor equipment testing device, system and method - Google Patents
Track circuit outdoor equipment testing device, system and method Download PDFInfo
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- CN111208380A CN111208380A CN202010302850.2A CN202010302850A CN111208380A CN 111208380 A CN111208380 A CN 111208380A CN 202010302850 A CN202010302850 A CN 202010302850A CN 111208380 A CN111208380 A CN 111208380A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
Abstract
The invention belongs to the field of rail transit equipment detection, and particularly relates to a device, a system and a method for testing outdoor equipment of a rail circuit. The testing device comprises an output module, a signal analysis module, a power supply module and a processor; the processor is respectively connected with the output module, the signal analysis module and the power supply module; the processor is used for generating and sending a test instruction to acquire test data; the output module is used for receiving a test instruction and outputting a driving signal to the tested equipment according to the test instruction; the signal analysis module is used for collecting test signals generated by the tested equipment, analyzing the test signals, and obtaining and sending test data. The testing device provided by the invention has the characteristic of standardization. And the same testing device is used for testing all outdoor equipment, so that the track circuit outdoor equipment can be tested under the unified testing standard.
Description
Technical Field
The invention belongs to the field of rail transit equipment detection, and particularly relates to a device, a system and a method for testing outdoor equipment of a rail circuit.
Background
The track circuit outdoor equipment is tested and processed periodically before and after being installed, so that the working performance of the outdoor equipment is good, and the running safety and reliability of a train are guaranteed.
Because the types and the models of the outdoor equipment and the testing device are more, and the testing device is designed by different design manufacturers and produced by different manufacturers, the hardware configuration of various testing devices is not uniform, and the interchange and the expansion cannot be realized; the standards for different test equipment are also different. The existing testing device has complex testing process and low automation degree. When testing personnel test a plurality of outdoor equipment in the same road section, the testing personnel not only need to select different testing equipment and execute complex operation steps, but also need to master the testing standards of the different testing equipment, thus greatly increasing the workload of the testing personnel and leading to lower accuracy of the testing result. In addition, the test program of the test device cannot be upgraded on line, so that the equipment is difficult to upgrade and deploy.
Because the test standards of the existing test devices are not uniform, the test results of all the test devices cannot be shared. After the test of the existing test device is completed, only a test report is generated, and the test data cannot be deeply and effectively utilized.
Disclosure of Invention
Aiming at the problems, the invention provides a track circuit outdoor equipment testing device, which comprises an output module, a signal analysis module, a power supply module and a processor, wherein the output module is used for outputting a signal to be tested; the processor is respectively connected with the output module, the signal analysis module and the power supply module;
the processor is used for generating and sending a test instruction to acquire test data;
the output module is used for receiving a test instruction and outputting a driving signal to the tested equipment according to the test instruction;
the signal analysis module is used for acquiring a test signal generated by the tested equipment, analyzing the test signal, and obtaining and sending test data;
and the power supply module is used for providing working voltage for the testing device.
Furthermore, the output module comprises a signal source generating unit, a power amplifier unit and an output unit;
the signal source generating unit is respectively connected with the processor and the power amplification unit; the processor is connected with the signal source generating unit through a signal amplitude adjusting circuit;
the power amplification unit is connected with the output unit; a capacitor is arranged between the power amplification unit and the output unit; the processor is connected with the output unit through an output selection circuit.
Furthermore, the signal analysis module comprises a plurality of groups of signal acquisition modules;
the signal acquisition module comprises an input unit and a signal processing unit;
the signal processing unit is respectively connected with the processor and the input unit; the processor is connected with the input unit through a signal input source selection circuit.
Furthermore, the output unit is connected with a sampling resistor, the other end of the sampling resistor is grounded, and the input unit is connected with the sampling resistor through a current detection circuit.
Furthermore, the signal processing unit comprises an input signal conditioning unit and an AD sampling unit, and is used for respectively filtering and collecting the test signals and sending the collected test signals to the processor;
the signal processing unit is arranged as an electrical isolation circuit.
Further, the processor is connected with the USB interface through the USB isolation circuit.
Further, the processor includes a main control unit;
the signal source generating unit comprises a digital frequency generator;
the power amplifier unit comprises a DA controller and a power amplifier and drive circuit;
the input unit comprises a first sampling interface and a second sampling interface;
the output unit comprises a standard resistor;
the signal processing unit comprises a digital sampling filtering processing unit;
the main control unit is connected with the PC equipment, the digital frequency generator, the DA controller and the digital sampling and filtering processing unit through communication buses; the DA controller is connected with a power amplifier and drive circuit, and the power amplifier and drive circuit is connected with the tested equipment through an output unit;
the digital sampling filtering processing unit is respectively connected with the first sampling interface and the second sampling interface; the first sampling interface is connected with the tested device, and the second sampling interface is connected with a standard resistor; and the standard resistor is connected with the power amplifier and the driving circuit.
Further, the processor includes a main control unit;
the signal source generating unit comprises a digital frequency generator;
the power amplifier unit comprises a DA controller and a power amplifier and drive circuit;
the output unit comprises a boosting selection unit and a boosting transformer;
the main control unit is connected with the boosting selection unit;
the input unit comprises a third sampling interface and a fourth sampling interface;
the signal processing unit comprises a digital sampling filtering processing unit;
the main control unit is connected with the PC equipment, the digital frequency generator, the DA controller and the digital sampling and filtering processing unit through communication buses; the DA controller is connected with a power amplifier and drive circuit, and the power amplifier and drive circuit is respectively connected with the step-up transformer and the tested equipment through a step-up selection unit; the step-up transformer is connected with the tested equipment;
and the digital sampling filtering processing unit is connected with the tested equipment through a third sampling interface and a fourth sampling interface respectively.
The invention also provides a test system for controlling the test device, which comprises a communication module, a task management module and an auxiliary module;
the communication module is used for establishing communication with each module in the testing device;
the task management module is used for receiving an instruction and controlling each module in the testing device according to the instruction;
the auxiliary module is used for receiving the test data of the test device and generating a test result report according to the test data.
The invention also provides a test method for the test system, which comprises the following steps:
the task management module acquires a test instruction;
the task management module sends a test instruction to the test device through the communication module and controls the test device to execute the test instruction;
the test device executes the test instruction to generate test data;
and the auxiliary module acquires the test data and generates a test result report according to the test data.
The testing device provided by the invention has the characteristic of standardization. Based on the same testing device and the same testing method, the condition that testing standards are not uniform due to different types of testing tools is avoided; and the same testing device is used for testing all outdoor equipment, so that the track circuit outdoor equipment can be tested under the unified testing standard.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
FIG. 1 shows a circuit schematic of a test apparatus according to an embodiment of the invention;
FIG. 2 is a schematic circuit diagram illustrating a test apparatus measuring impedance of a device under test according to an embodiment of the present invention;
FIG. 3 shows a schematic circuit diagram of a test apparatus measuring current and voltage of a device under test according to an embodiment of the present invention;
FIG. 4 shows a schematic structural diagram of a test system according to an embodiment of the invention;
FIG. 5 illustrates a workflow diagram of a communication module according to an embodiment of the invention;
FIG. 6 illustrates a workflow diagram of a task management module according to an embodiment of the invention;
FIG. 7 shows a flow diagram of a testing method according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides a track circuit outdoor equipment testing device which comprises an output module, a signal analysis module, a power supply module and a processor, wherein the output module is used for outputting a signal to be tested; the processor is respectively connected with the output module, the signal analysis module and the power supply module.
The processor is used for generating and sending a test instruction to acquire test data;
the output module is used for receiving a test instruction and outputting a driving signal to the tested equipment according to the test instruction;
the signal analysis module is used for acquiring a test signal generated by the tested equipment, analyzing the test signal and obtaining and sending test data;
and the power supply module is used for providing working voltage for the testing device.
Exemplarily, as shown in fig. 1, the output module includes a signal source generating unit, a power amplifier unit, and an output unit.
The signal source generating unit is respectively connected with the processor and the power amplification unit; the processor is connected with the signal source generating unit through a signal amplitude adjusting circuit. The power amplification unit is connected with the output unit; a capacitor is arranged between the power amplification unit and the output unit; the processor is connected with the output unit through an output selection circuit. The output unit includes, but is not limited to, two sets of output interfaces.
The signal source generating unit receives a test instruction sent by the processor, and generates a driving signal according to the test instruction, and the processor controls the signal source generating unit to adjust the frequency of the driving signal through a signal amplitude adjusting circuit. The signal source generating unit sends the driving signal to the power amplifier unit, the power amplifier unit amplifies the driving signal, and the amplified driving signal is sent to the tested equipment through the output unit to drive the tested equipment. The driving signal comprises an analog quantity signal and/or a digital quantity signal.
The signal analysis module comprises a plurality of groups of signal acquisition modules; in the embodiment of the present invention, the signal analysis module includes a first signal acquisition module and a second signal acquisition module.
Specifically, the first signal acquisition module comprises a first input unit and a first signal processing unit; the first signal processing unit is respectively connected with the processor and the first input unit; the processor is connected with the first input unit through a signal input source selection circuit.
Furthermore, the output unit is connected with a sampling resistor, the other end of the sampling resistor is grounded, and the first input unit is connected with the sampling resistor through a current detection circuit. Illustratively, the maximum resistance value of the sampling resistor is 0.1 Ω.
Specifically, the first input unit may be connected to the device under test, and is configured to obtain a test signal fed back by the device under test; the first input unit sends the test signal to a first signal processing unit. The first signal processing unit receives and processes the test signal, and specifically, the first signal processing unit includes a first input signal conditioning unit and a first AD sampling unit. The first input signal conditioning unit and the first AD sampling unit respectively filter and collect the test signals and send the collected test signals to the processor.
Preferably, the first signal processing unit is electrically isolated. For example, the power module is electrically isolated from the power utilization loop of the first signal processing unit, that is, the first signal processing unit is electrically isolated from the whole testing device, so that the first signal processing unit becomes an electrically isolated and independent non-grounded safety system to prevent the indirect electric shock hazard in the case of the exposed conductor being in a fault and electrified state.
Further, the processor receives and analyzes the test signal to generate test data. The first input unit comprises a plurality of input interfaces, and the processor controls the first input unit to select the corresponding interface to use through the signal input source selection circuit.
Specifically, the second signal acquisition module comprises a second input unit and a second signal processing unit; the second signal processing unit is respectively connected with the processor and the second input unit; the processor is connected with the second input unit through a signal input source selection circuit.
Specifically, the second input unit may be connected to the device under test, and is configured to obtain a test signal fed back by the device under test; the second input unit sends the test signal to a second signal processing unit. The second signal processing unit receives and processes the test signal, and specifically, the second signal processing unit includes a second input signal conditioning unit and a second AD sampling unit. The second input signal conditioning unit and the second AD sampling unit respectively filter and collect the test signals and send the collected test signals to the processor.
Preferably, the second signal processing unit is electrically isolated. For example, the power module is electrically isolated from the circuit of the second signal processing unit, i.e. the second signal processing unit is electrically isolated from the whole testing device, so that the second signal processing unit becomes an electrically isolated and independent non-grounded safety system to prevent the indirect electric shock hazard in the case of the exposed conductor being in a fault and electrified state.
Further, the processor receives and analyzes the test signal to generate test data. The second input unit comprises a plurality of input interfaces, and the processor controls the second input unit to select the corresponding interface to use through the signal input source selection circuit.
Furthermore, the processor is connected with the USB interface through the USB isolation circuit, and the PC equipment is connected with the processor through the USB interface and interacts with the test software in the processor, and can also upgrade and update the test software.
The testing device can realize the detection of different outdoor equipment of the track circuit. According to the type of the tested device, the corresponding detection circuit can be selected to work.
Illustratively, the signal analysis module is capable of making impedance measurements and voltage and current measurements. The impedance of the device under test is measured using, but not limited to, a test circuit as shown in figure 2. The processor includes a main control unit; the signal source generating unit comprises a digital frequency generator; the power amplifier unit comprises a DA controller and a power amplifier and drive circuit; the first input unit comprises a first sampling interface and a second sampling interface; the output unit comprises a standard resistor; the first signal processing unit includes a digital sampling filtering processing unit.
The PC equipment is connected with the main control unit through a USB interface, the main control unit is connected with the digital frequency generator, the main control unit is connected with the DA controller through a control bus, and the main control unit is connected with the digital sampling filtering processing unit through a communication bus; the DA controller is connected with a power amplifier and drive circuit, and the power amplifier and drive circuit is connected with the tested equipment through an output unit; the digital sampling filtering processing unit is respectively connected with the first sampling interface and the second sampling interface; the first sampling interface is connected with the tested device, and the second sampling interface is connected with a standard resistor; and the standard resistor is connected with the power amplifier and the driving circuit.
Specifically, the PC device sends the test type and the test parameters of the tested device to a main control unit, the main control unit controls the digital frequency generator to generate accurate frequency information, and the main control unit acquires and processes the frequency information and controls a DA controller to generate a sine signal with accurate frequency through a control bus. And the DA controller sends the sinusoidal signal to a power amplifier and driving circuit, and the power amplifier and driving circuit outputs a high-power driving signal to drive the tested equipment to operate.
After the tested device runs, the first sampling interface acquires the effective voltage value of the tested device, and the second sampling interface acquires the voltage value of the standard resistor. Specifically, the standard resistor refers to a resistor in a kelvin test method, and the standard resistor may be a non-inductive resistor.
The digital sampling filtering processing unit is communicated with the first sampling interface and the second sampling interface respectively to obtain voltage values and phase differences acquired by the two interfaces, and the current output current is calculated by acquiring the voltage values of the standard resistor. The main control unit adjusts the amplitude of the driving signal through the control bus, adjusts the power amplifier and the driving circuit, and ensures the requirements of the tested equipment under the stable constant current testing environment. And when the output current is stable, calculating the real part and the imaginary part of the impedance of the tested equipment through the voltage and the phase collected by the first sampling interface and the second sampling interface.
The test device measures the voltage and current of the device under test, and adopts but is not limited to a test circuit as shown in fig. 3.
The processor includes a main control unit; the signal source generating unit comprises a digital frequency generator; the power amplifier unit comprises a DA controller and a power amplifier and drive circuit; the output unit comprises a boosting selection unit and a boosting transformer; the main control unit is connected with the boosting selection unit; the second input unit comprises a third sampling interface and a fourth sampling interface; the second signal processing unit includes a digital sampling filter processing unit.
The PC equipment is connected with the main control unit through a USB interface, the main control unit is connected with the digital frequency generator, the main control unit is connected with the DA controller through a control bus, and the main control unit is connected with the digital sampling filtering processing unit through a communication bus; the DA controller is connected with a power amplifier and drive circuit, and the power amplifier and drive circuit is respectively connected with the step-up transformer and the tested equipment through a step-up selection unit; the step-up transformer is connected with the tested equipment; and the digital sampling filtering processing unit is connected with the tested equipment through a third sampling interface and a fourth sampling interface respectively.
Specifically, the PC device sends the test type and the test parameters of the tested device to a main control unit, the main control unit controls the digital frequency generator to generate accurate frequency information, and the main control unit acquires and processes the frequency information and controls a DA controller to generate a sine signal with accurate frequency through a control bus. And the DA controller sends the sinusoidal signal to a power amplifier and driving circuit, and the power amplifier and driving circuit outputs a high-power driving signal. And the boosting selection unit receives the driving signal and judges whether boosting processing is carried out or not according to the instruction of the main control unit. If the voltage needs to be boosted, the driving signal is boosted through a boosting transformer, and the boosted driving signal is sent to the tested equipment by the boosting transformer to drive the tested equipment to operate; and if the voltage does not need to be boosted, the boosting selection unit directly sends the driving signal to the tested equipment to drive the tested equipment to operate.
The third sampling interface and the fourth sampling interface respectively collect the output voltage of the tested device, the collected output voltage is subjected to filtering processing through the digital sampling filtering processing unit, the processed output voltage value is sent to the main control unit, the main control unit adjusts the output amplitude of the power amplifier and the driving circuit through the control bus, the power amplifier and the driving circuit output voltage with stable amplitude, and the requirement of the tested device under a stable constant voltage testing environment is met. And when the voltage is stable, the output voltage and the output current of the tested equipment are respectively collected through the two sampling interfaces.
The testing device provided by the invention has the characteristic of standardization. Based on the same testing device and the same testing method, the condition that testing standards are not uniform due to different types of testing tools is avoided; and the same testing device is used for testing all outdoor equipment, so that the track circuit outdoor equipment can be tested under the unified testing standard.
Each module in the testing device is provided with an interface, the PC equipment can be connected with the testing device through the interfaces, and the PC equipment testing system calls each module in the testing device.
On the basis of the testing device, the invention also provides a testing system for the track circuit outdoor equipment, which is used for controlling the running of the testing device and realizing human-computer interaction.
Illustratively, as shown in fig. 4, the test system includes a communication module, a task management module, and an auxiliary module.
Specifically, the communication module is used for establishing communication with each module in the testing device;
the task management module is used for receiving an instruction and controlling each module in the testing device according to the instruction;
the auxiliary module is used for receiving the test data of the test device and generating a test result report according to the test data.
Preferably, the test system is a test framework based on a Windows system, each module in the test system is expandable, and each module is provided with a corresponding Application Program Interface (API), through which each module in the test system can be called at any time.
Specifically, an RS232 communication serial port is adopted between the communication module and the testing device, and the automatic connection function is achieved.
Illustratively, as shown in fig. 5, the workflow of the communication module includes the following steps:
s1, the communication module acquires all serial ports of the testing device;
s2, the communication module traverses all the serial ports; sequentially sending connect information to each serial port and waiting for the serial port to respond;
s3, if the serial port responds, it indicates that the serial port is opened;
s31, the communication module sends connect information to the serial port at regular time and waits for the serial port to respond;
s32, if the serial port responds, it indicates that the serial port is opened successfully and the module corresponding to the serial port establishes communication with the test system;
s33, if the serial port has no response, returning to execute the step S1;
and S4, if the serial port does not respond, the communication module returns to the step S2.
Further, the task management module is based on a testing framework of the Windows system and is used for, but not limited to, preparation before testing the testing system, input condition checking and result judgment after testing; and interacts with the test device by calling an Application Program Interface (API), including but not limited to signal output control, signal analysis control, temperature acquisition.
Illustratively, as shown in fig. 6, the workflow of the task management module includes the following steps:
s5, the test system establishes communication with the test device and starts testing;
s6, the task management module traverses all test tasks;
s7, preparing before testing for each testing task;
specifically, different test items require different preparation tasks, such as: setting test parameters in advance and obtaining voltage and current values.
S8, the task management module acquires output data fed back by the power controller and judges whether the output data are abnormal;
s81, if the output data is abnormal, ending the test;
s82, if the output data is normal, executing the step S9;
s9, the task management module checks the test input condition and judges whether the input condition is abnormal;
specifically, the task management module compares the input condition with a test condition corresponding to the test task, and determines whether the input condition is abnormal. For example: and judging whether the test parameters and the voltage and current values in the input conditions meet the test conditions.
S91, if the input condition is abnormal, ending the test;
s92, if the input condition is normal, sending a test instruction to a test device according to the input condition;
s10, the testing device executes the test according to the test instruction to generate test data;
s11, the task management module acquires the test data and judges whether the test data is abnormal;
specifically, if the test data is within the standard range of the equipment operation, the test data is normal, otherwise, the test data is abnormal. The equipment operation standard comprises all operation parameters of the equipment to be tested when the equipment to be tested normally operates.
S111, if the test data are abnormal, ending the test;
s112, if the test data are normal, executing S12;
s12, judging whether all the test tasks are completely executed according to the test data;
s121, if the test task is not executed, returning to the step S6;
and S122, if the test tasks are completely executed, ending the test.
For different test tasks, the test device controls the circuit access required by different test tasks by controlling the relay set. The one-key automatic test is realized, the operation of personnel is not needed in the middle process, and the labor cost and the time cost are saved.
The testing system is based on a testing framework of a Windows system, and realizes scheduling control and task-visible control of each testing task; and each functional module of the test system can be networked to automatically carry out program upgrading, and the maintainability is strong.
Furthermore, the auxiliary module acquires the test data in the task management module and generates a test report according to the test data.
Preferably, the auxiliary module uploads the test data to a server for storage.
The test device realizes the test standardization of various outdoor equipment on the basis of hardware; the test system unifies and standardizes the structure of test data on the basis of software, and provides basic guarantee for informatization of the test device.
Specifically, data related to the testing device are divided into testing data and testing environment data, the testing data include but are not limited to impedance, voltage, current, temperature and switching value, the testing environment data include but are not limited to ambient temperature, humidity and testing personnel, data types of all data are unified, data tested by each testing device (including intermediate process data) are stored, and the data can be acquired by both the testing device and the data center.
A plurality of testing devices are combined together to form a networked platform, all elements of the equipment are gathered on the basis of modern communication, network and database technologies, the obtained result through analysis can be used by research personnel, production personnel and maintenance personnel, and the potential value of big data is explored by using big data thinking.
On the basis of the test device and the test system, the invention further provides a test method for the track circuit outdoor equipment, which includes, as shown in fig. 7 by way of example:
the task management module acquires a test instruction;
the task management module sends a test instruction to the test device through the communication module and controls the test device to execute the test instruction;
the test device executes the test instruction to generate test data;
and the auxiliary module acquires the test data and generates a test result report according to the test data.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (9)
1. The testing device for the track circuit outdoor equipment is characterized by comprising an output module, a signal analysis module, a power supply module and a processor; the processor is respectively connected with the output module, the signal analysis module and the power supply module;
the processor is used for generating and sending a test instruction to acquire test data;
the output module is used for receiving a test instruction and outputting a driving signal to the tested equipment according to the test instruction;
the signal analysis module is used for acquiring a test signal generated by the tested equipment, analyzing the test signal, and obtaining and sending test data;
the power supply module is used for providing working voltage for the testing device;
the output module comprises a signal source generating unit, a power amplifier unit and an output unit;
the signal source generating unit is respectively connected with the processor and the power amplification unit; the processor is connected with the signal source generating unit through a signal amplitude adjusting circuit;
the power amplification unit is connected with the output unit; a capacitor is arranged between the power amplification unit and the output unit; the processor is connected with the output unit through an output selection circuit.
2. The track circuit outdoor unit testing apparatus of claim 1,
the signal analysis module comprises a plurality of groups of signal acquisition modules;
the signal acquisition module comprises an input unit and a signal processing unit;
the signal processing unit is respectively connected with the processor and the input unit; the processor is connected with the input unit through a signal input source selection circuit.
3. The track circuit outdoor unit testing device of claim 2,
the output unit is connected with the sampling resistor, the other end of the sampling resistor is grounded, and the input unit is connected with the sampling resistor through the current detection circuit.
4. The outdoor unit testing device of the track circuit as claimed in claim 2 or 3, wherein the signal processing unit comprises an input signal conditioning unit and an AD sampling unit, and is used for filtering and collecting the test signal respectively, and sending the collected test signal to the processor;
the signal processing unit is arranged as an electrical isolation circuit.
5. The track circuit outdoor unit testing apparatus of claim 1,
the processor is connected with the USB interface through the USB isolation circuit.
6. The track circuit outdoor unit testing device of claim 4,
the processor includes a main control unit;
the signal source generating unit comprises a digital frequency generator;
the power amplifier unit comprises a DA controller and a power amplifier and drive circuit;
the input unit comprises a first sampling interface and a second sampling interface;
the output unit comprises a standard resistor;
the signal processing unit comprises a digital sampling filtering processing unit;
the main control unit is connected with the PC equipment, the digital frequency generator, the DA controller and the digital sampling and filtering processing unit through communication buses; the DA controller is connected with a power amplifier and drive circuit, and the power amplifier and drive circuit is connected with the tested equipment through an output unit;
the digital sampling filtering processing unit is respectively connected with the first sampling interface and the second sampling interface; the first sampling interface is connected with the tested device, and the second sampling interface is connected with a standard resistor; and the standard resistor is connected with the power amplifier and the driving circuit.
7. The track circuit outdoor unit testing device of claim 4,
the processor includes a main control unit;
the signal source generating unit comprises a digital frequency generator;
the power amplifier unit comprises a DA controller and a power amplifier and drive circuit;
the output unit comprises a boosting selection unit and a boosting transformer;
the main control unit is connected with the boosting selection unit;
the input unit comprises a third sampling interface and a fourth sampling interface;
the signal processing unit comprises a digital sampling filtering processing unit;
the main control unit is connected with the PC equipment, the digital frequency generator, the DA controller and the digital sampling and filtering processing unit through communication buses; the DA controller is connected with a power amplifier and drive circuit, and the power amplifier and drive circuit is respectively connected with the step-up transformer and the tested equipment through a step-up selection unit; the step-up transformer is connected with the tested equipment;
and the digital sampling filtering processing unit is connected with the tested equipment through a third sampling interface and a fourth sampling interface respectively.
8. A test system for controlling a test apparatus according to any one of claims 1 to 7, wherein the test system comprises a communication module, a task management module and an auxiliary module;
the communication module is used for establishing communication with each module in the testing device;
the task management module is used for receiving an instruction and controlling each module in the testing device according to the instruction;
the auxiliary module is used for receiving the test data of the test device and generating a test result report according to the test data.
9. A test method for the test system of claim 8, the test method comprising:
the task management module acquires a test instruction;
the task management module sends a test instruction to the test device through the communication module and controls the test device to execute the test instruction;
the test device executes the test instruction to generate test data;
and the auxiliary module acquires the test data and generates a test result report according to the test data.
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| CN202010302850.2A CN111208380A (en) | 2020-04-17 | 2020-04-17 | Track circuit outdoor equipment testing device, system and method |
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| CN202010302850.2A CN111208380A (en) | 2020-04-17 | 2020-04-17 | Track circuit outdoor equipment testing device, system and method |
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Cited By (1)
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