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Detection method of output electric parameters of railway snow melting system

A detection method and technology of electrical parameters, applied in the direction of measuring electrical variables, measuring electricity, measuring devices, etc., can solve the problems of unstable output of snow melting system, output deviation from rated value, and reduced snow melting effect, and achieve strong real-time performance and reliability. , to ensure stability, easy to use effect

Active Publication Date: 2018-10-02
XIAN RAILWAY SIGNAL
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Problems solved by technology

[0003] Since the quality of the input power supply varies from site to site, frequent site power grid fluctuations will cause the output of the snow melting system to be unstable or even seriously deviate from the rated value, resulting in serious consequences such as a decline in the snow melting effect. Therefore, a simple and practical snow melting system output detection device imminent

Method used

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  • Detection method of output electric parameters of railway snow melting system
  • Detection method of output electric parameters of railway snow melting system
  • Detection method of output electric parameters of railway snow melting system

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Embodiment Construction

[0072] Such as figure 1 As shown, after the external AC voltage signal 1 passes through the photocoupler 2 and the comparator 3, a pulse signal is generated, and this pulse signal is sent to the timer of the microprocessor 14. The timer captures the edge of the pulse signal, and the rising edge of the signal Trigger the edge capture interrupt. After entering the interrupt, read the count value of the timer, measure the period of the pulse signal, and convert the frequency value of the AC signal.

[0073]The 16-way current signal 4 is converted into a voltage signal 6 by the first resistance sampling circuit 5 and sent to the multiplexer 11; the 8-way current signal and the 3-way voltage signal 8 are converted into a voltage signal 10 by the second resistance sampling circuit 9 and sent to the multiplexer. Road selector 11; After the multiplexer 11, divide into two roads and enter the first signal conditioning circuit 7 and the second signal conditioning circuit 12 respectively...

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Abstract

The invention belongs to the electric parameter collection and analysis field, and concretely relates to a detection method for a railway snow melting system output electric parameter. Because a high-precision electric quantity isolation mutual inductor is employed to collect current and voltage data, requirements of a system to collection precision can be met, and the stability of the system can be ensured. A CAN bus communication mode is employed, the Baud rate is 0.5Mbps, and high real-time and reliability of the system are ensured. A module has an optional measuring range scope, an external interface has two modes of internal connection and external connection, usage is simple and maintenance is convenient.

Description

technical field [0001] The invention belongs to the field of electric parameter collection and analysis, and in particular relates to a detection method for output electric parameters of a railway snow melting system. Background technique [0002] The turnout of the railway station is an important part of the station transportation equipment. The technical status of the turnout is very strict. When there is a gap of more than 4 mm between the tip of the switch rail and the basic rail, the approach cannot be locked and the signal can not be opened. In winter snowfall weather in cold regions, if the snow removal of railway turnouts is not timely, snow or ice will accumulate in the turnouts, resulting in the tip rail of the turnout and the basic rail cannot be reliably attached, directly affecting the normal operation of train receiving and dispatching operations and shunting operations at the station , In severe cases, it may cause interruption of railway transportation. With...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 宋志翟文革卢智李安福韩志强蒋文斌黄晨涛
Owner XIAN RAILWAY SIGNAL
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