Railway turnout snow melting control system

Abstract

The utility model belongs to the technical field of railway turnout safety monitoring, and discloses a railway turnout snow melting control system which comprises an upper computer, a host module and a plurality of snow melting modules, the upper computer is in communication connection with the host module, and each snow melting module is provided with a slave module, an isolation transformer, a plurality of heating strips and a current acquisition module. Each of the slave module and the host module is provided with a microcontroller integrated with a LoRa function, the output end of the isolation transformer is connected in parallel with each heating strip, the heating strips are mounted on a railway turnout, and each heating strip is provided with a current acquisition module. According to the utility model, the real-time current signals of the heating strips are collected to judge whether the snow melting module has faults or not, environment and weather information does not need to be collected, the deployment is convenient, the monitoring efficiency is improved, and the equipment and operation and maintenance cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of railway switch safety monitoring, and particularly relates to a railway switch snow melting control system. Background Technique

[0002] Most of the existing railway switch snow melting monitoring systems judge the start-up and shutdown conditions of the snow melting device by monitoring data such as the real-time temperature, snow depth, snow melting duration, and meteorological information of the track or switch. Therefore, problems such as complex structure, high cost, and inability to immediately detect faults in the mechanism of the snow melting device are caused. Content of the Utility Model

[0003] Technical Objective: To solve the above technical problems, the utility model proposes a railway switch snow melting control system, which judges whether the snow melting module fails by collecting the real-time current signal of the heating strip, improves the monitoring efficiency, and reduces the equipment and operation and maintenance costs at the same time.

[0004] Technical Solution: To achieve the above technical objective, the utility model adopts the following technical solution:

[0005] A railway switch snow melting control system includes a host computer, a host module, and a plurality of snow melting modules. The host computer is communicatively connected to the host module. Among them, each snow melting module is provided with a slave module, an isolation transformer, a plurality of heating strips, and a current acquisition module. The slave module and the host module are both provided with a microcontroller integrated with LoRa function. The output ends of the isolation transformer are connected in parallel to each heating strip. The heating strips are installed on the railway switch. Each heating strip is provided with a current acquisition module. The current acquisition module is used to collect the real-time current data on the heating strip and send it to the corresponding slave module. The host module is used to send the real-time current data uploaded by each slave module to the host computer.

[0006] Preferably, the slave module and the host module both adopt the microcontroller ZSL420. The microcontroller ZSL420 is provided with a first current input terminal IN1, a second current input terminal IN2, a third current input terminal IN3, and a fourth current input terminal IN4;

[0007] Each snow melting module is provided with 4 heating strips and 4 current acquisition modules. The four current input terminals in the slave module are respectively connected to the output ends of a current acquisition module.

[0008] Preferably, each current acquisition module is provided with a rectifier U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, an electrolytic capacitor C1, and a voltage stabilizing diode D1. The rectifier U1 adopts a bridge rectifier of model DF10S, and the model of the voltage stabilizing diode D1 is ZM4728A;

[0009] The bridge rectifier U1 includes pin 1, pin 2, pin 3, and pin 4. Pin 1 and pin 3 serve as the input terminals of the working power supply of the bridge rectifier U1. Pin 2 and pin 4 are respectively connected to both ends of the heating strip, and a first resistor R1 is connected in parallel between pin 2 and pin 4. The second resistor R2 and the third resistor R3 are connected in series and then connected to pin 4. The positive electrode of the electrolytic capacitor C1 is connected to the common connection point of the second resistor R3 and the third resistor R3, and the negative electrode is grounded. The positive electrode of the voltage stabilizing diode D1 is connected to the negative electrode of the electrolytic capacitor C1, and the negative electrode serves as the output terminal of the bridge rectifier U1. Both ends of the fourth resistor R4 are respectively connected to pin 2 and the negative electrode of the voltage stabilizing diode D1.

[0010] Preferably, the upper computer is arranged in the indoor control station of the railway system and is communicatively connected to the host module in a wired manner.

[0011] Beneficial effects: Due to the adoption of the above technical solution, the present utility model has the following beneficial effects:

[0012] The present utility model judges whether the snow melting module fails by collecting the real-time current signal of the heating strip, without collecting environmental and meteorological information, which is convenient for deployment, improves the monitoring efficiency, and reduces the equipment and operation and maintenance costs at the same time. Description of the Drawings

[0013] Figure 1 is a structural block diagram of a railway switch snow melting control system proposed in the embodiment;

[0014] Figure 2 is a schematic diagram of the microcontroller ZSL429 adopted in Embodiment 1;

[0015] Figure 3 is an electronic circuit diagram of the current acquisition module in Embodiment 1. Detailed Embodiment

[0016] The embodiments of the present utility model will be described in detail below with reference to the drawings.

[0017] Embodiment 1

[0018] As Figure 1As shown in the figure, this embodiment proposes a snow melting control system for railway switches, which includes: a host computer, a host module, and multiple snow melting modules. The host computer is wired to the host module. Each snow melting module is provided with a power supply system, a slave module, an isolation transformer, multiple heating strips, and a current acquisition module. Among them, both the slave module and the host module are provided with a microcontroller MCU integrated with LoRa function. The input end of the isolation transformer is connected to the power supply system, and the output end is connected to each heating strip to provide working power for the heating strips. The heating strips are installed on the railway switch, and each heating strip is provided with a current acquisition module. The current acquisition module is used to collect the real-time current data on the heating strip and send it to the corresponding slave module. The host module is used to send the real-time current data uploaded by each slave module to the host computer.

[0019] As Figure 2 shown in the figure, in this embodiment, both the slave module and the host module adopt the microcontroller ZSL420. The microcontroller ZSL420 is provided with a first current input terminal IN1, a second current input terminal IN2, a third current input terminal IN3, and a fourth current input terminal IN4. In each snow melting module, there are 4 heating strips and 4 current acquisition modules. The four current input terminals in the slave module are respectively connected to the output ends of a current acquisition module.

[0020] Each current acquisition module adopts the same current acquisition circuit. As Figure 3 shown in the figure, the current acquisition module is provided with a rectifier U1, a first resistor R1, a second resistor R2, a third resistor R3, a fourth resistor R4, an electrolytic capacitor C1, and a voltage stabilizing diode D1. The model of the rectifier U1 is DF10S, and the model of the voltage stabilizing diode D1 is ZM4728A. After the current acquisition module collects the real-time current signal on the heating strip and performs rectification and voltage stabilization processing, the real-time current data suitable for directly inputting into the microcontroller ZSL420 is obtained.

[0021] The bridge rectifier U1 includes a pin 1, a pin 2, a pin 3, and a pin 4. The pin 1 and the pin 3 are used as the input ends of the working power supply of the bridge rectifier U1. The pin 2 and the pin 4 are respectively connected to both ends of the heating strip, and the first resistor R1 is connected in parallel between the pin 2 and the pin 4. The second resistor R2 and the third resistor R3 are connected in series and then connected to the pin 4. The positive electrode of the electrolytic capacitor C1 is connected to the common connection point of the second resistor R3 and the third resistor R3, and the negative electrode is grounded. The positive electrode of the voltage stabilizing diode D1 is connected to the negative electrode of the electrolytic capacitor C1, and the negative electrode is used as the output end of the bridge rectifier U1. The two ends of the fourth resistor R4 are respectively connected to the pin 2 and the negative electrode of the voltage stabilizing diode D1.

[0022] In the present utility model, a heating strip is used to melt snow and ice on the switch. The slave module is arranged on the isolation transformer, and a current acquisition module for detecting the real-time current signal of the heating strip is designed, which is convenient for deployment. The master module collects the information sent by the slave module and sends it to the upper computer. The staff can intuitively monitor the real-time current data of each heating strip from the upper computer, and can more intuitively observe the specific current data and fault information such as short circuit and open circuit, reducing potential safety hazards and improving the work efficiency of the staff.

[0023] In the present utility model, the master module is installed at the operation terminal in the station duty room, responsible for the management of the wireless communication network and the collection and forwarding of data. The slave module is installed in each isolation transformer in the station yard, and the slave module can simultaneously complete two functions of data acquisition and data relay. After the master module and the slave module are powered on, a networking mode is realized through the LoRa function. When the Lora self-organizing network is working properly, if a new slave module needs to be added, the master module and the existing slave modules need to be restarted and the networking process needs to be carried out again.

[0024] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the above embodiments do not limit the present utility model in any form. Any technical solutions obtained by using equivalent replacements or equivalent transformations fall within the protection scope of the present utility model.

Claims

1. A railway turnout snow melting control system, characterized in that: It includes a host computer, a host module and multiple snow melting modules. The host computer is connected to the host module in communication. Each snow melting module is provided with a slave module, an isolation transformer, multiple heating strips and a current acquisition module. Both the slave module and the host module are provided with a microcontroller with an integrated LoRa function. The output end of the isolation transformer is connected in parallel with each heating strip. The heating strip is installed on a railway turnout. Each heating strip is provided with a current acquisition module. The current acquisition module is used to collect real-time current data on the heating strip and send it to the corresponding slave module. The host module is used to send the real-time current data uploaded by each slave module to the host computer; The slave module and the host module both use a microcontroller ZSL420, and the microcontroller ZSL420 is provided with a first current input terminal IN1, a second current input terminal IN2, a third current input terminal IN3 and a fourth current input terminal IN4; The current acquisition module is used to collect the real-time current signal on the heating strip and obtain the real-time current data suitable for direct input into the microcontroller ZSL420 after rectification and voltage stabilization. Each current acquisition module is provided with a rectifier (U1), a first resistor (R1), a second resistor (R2), a third resistor (R3), a fourth resistor (R4), an electrolytic capacitor (C1) and a voltage regulator (D1). The rectifier (U1) adopts a bridge rectifier of model DF10S, and the voltage regulator (D1) is of model ZM4728A. The bridge rectifier U1 includes pin 1, pin 2, pin 3 and pin 4. Pin 1 and pin 3 serve as input ends of the working power supply of the bridge rectifier U1, and pin 2 and pin 4 serve as input ends of the working power supply of the bridge rectifier U1, respectively. The two ends of the heating strip are connected, and a first resistor (R1) is connected in parallel between pin 2 and pin 4; the second resistor (R2) and the third resistor (R3) are connected in series and then connected to pin 4; the positive electrode of the electrolytic capacitor (C1) is connected to the common connection point of the second resistor (R2) and the third resistor (R3), and the negative electrode is grounded; the positive electrode of the voltage regulator (D1) is connected to the negative electrode of the electrolytic capacitor (C1), and the negative electrode serves as the output end of the bridge rectifier (U1); the two ends of the fourth resistor (R4) are respectively connected to pin 2 and the negative electrode of the voltage regulator (D1).

2. A railway turnout snow melting control system according to claim 1, characterized in that: Each snow melting module is provided with 4 heating strips and 4 current acquisition modules, and the four current input terminals in the slave module are respectively connected to the output end of a current acquisition module.

3. A railway turnout snow melting control system according to claim 1, characterized in that: The host computer is arranged in an indoor control station of the railway system and is connected to the host module in a wired communication manner.

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