Portable simulation tester for 25HZ phase-sensitive track circuits

Abstract

The invention discloses a portable simulation tester for 25HZ phase-sensitive track circuits. The simulation tester comprises a direct current power unit, a 25HZ sine wave signal generating unit and a wave shape signal control detecting unit, wherein the 25HZ sine wave signal generating unit comprises an inverter, a shaping transformer and an output interface, the input end of the shaping transformer is connected with the output end of the inverter through a power amplifier, and the output interface is connected with the output end of the shaping transformer. The wave shape signal control detecting unit comprises a CPU single-chip microcomputer controller and a digital display connected with a communication interface of the CPU single-chip microcomputer controller, the control output end of the CPU single-chip microcomputer controller is respectively connected with the inverter and the input control end of the power controller, the input control end of the CPU single-chip microcomputer controller is connected with an output voltage tuning knob and a starting button, and the sampling signal input end of the CPU single-chip microcomputer controller is connected with the output end of the shaping transformer. By means of the portable simulation tester for 25HZ phase-sensitive track circuits, simulation adjustment is conducted on the track circuits of a whole station yard in advance.

Description

technical field [0001] The invention relates to a tester for electrical characteristics of railway station track circuits, in particular to a portable 25H Z Phase sensitive track circuit analog tester. Background technique [0002] On the railway 25h Z During the construction and replacement of phase-sensitive track circuit equipment, the railway must be monitored for 25 hours according to the requirements. Z The phase-sensitive track circuit is tested for electrical characteristics to ensure the safety and reliability of the track circuit. Currently, on railway 25H Z The detection of the electrical characteristics of the phase-sensitive track circuit is mostly carried out with a multimeter. Because the multimeter can only test the on-off status of cables and local lines and the circuit voltage test, but cannot simulate the relevant electrical parameters of the sending and receiving circuits, there are the following deficiencies: 1. When the new line is built, the new li...

AI Technical Summary

Problems solved by technology

Because the multimeter can only test the on-off status of cables and local lines and the circuit voltage test, but cannot simulate the relevant electrical parameters of the sending and receiving circuits, there are the following deficiencies: 1. When the new line is built, the new line in the construction work is not in place. 1. When the railway track is not paved temporarily, the installation and debugging of outdoor track circuit equipment cannot be carried out; 2. In the absence of power supply, it will affect whether the verification sending and receiving system after the track circuit installation is connected, whether the indoor and outdoor circuits are connected, Whether the polarity crossing of the phase-sensitive track circuit is correct; 3. The 25H cannot be adjusted in advance Z The electrical characteristics of the phase-sensitive track circuit sending and receiving circuits are partially or systematically tested and tested, so it is difficult to find errors such as open circuits, short circuits, and poor electrical parameters that existed before the track circuit receiving and sending systems were replaced with larger ones; 4. During the overhaul and intermediate repair of some track line signal equipment, the station is always in use, which involves the issue of safe transportation. The track circuit equipment cannot be connected to the test before it is replaced with a larger one, causing great harm to the electrical engineering technicians. Therefore, during the reloading time, it often occurs that the faults in the track circuit are not handled smoothly, which seriously affects the railway transportation production; Problems in construction, installation, wiring and electrical parameters cannot be found in time

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