Analog quantity expansion acquisition plug-in suitable for urban rail transit engineering vehicle operation protection system

Abstract

According to the analog quantity expansion acquisition plug-in suitable for the urban rail transit engineering vehicle operation protection system, a main air cylinder pressure sensor, a balance air cylinder I pressure sensor and a balance air cylinder II pressure sensor are respectively installed at corresponding positions of a main air cylinder, a balance air cylinder I and a balance air cylinder II, and the output mode is analog signal output. The pressure sensor is used for collecting pressure signals, the collected pressure signals are converted into electric signals, the electric signals are transmitted to the analog quantity expansion plug-in unit through a cable, the analog quantity expansion plug-in unit samples and processes the three paths of pressure signals, and collected pressure information is sent to the main control plug-in unit through a CAN channel. The main control plug-in processes and converts the received pressure information and then sends the converted pressure information to the screen display for display, on the basis that only two paths of pressure signals are supported to be collected at present, three paths of pressure signals are expanded and added, a driver can better control the engineering vehicle in the operation process, and the usability of the urban rail transit engineering vehicle operation protection system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to rail transit engineering vehicle technical field, especially a simulation quantity extension collection plug-in suitable for urban rail transit engineering vehicle operation protection system. BACKGROUND

[0002] Urban rail transit engineering vehicle operation protection system: it is the non-communication-based train automatic control auxiliary system that realizes the operation safety protection of engineering vehicle in the process of depot / parking lot or main line operation, guarantees engineering vehicle operation safety, and system mainly comprises cabinet, operation protection host computer, man-machine interaction unit (also called screen display), switch, vehicle-mounted readout, vehicle-mounted antenna, radio antenna (optional), 4G antenna (optional), vehicle-mounted AP host computer and AP antenna (when WLAN is selected, it can be selected), video system, speed sensor and accessory, pressure sensor, special cable etc.

[0003] At present, urban rail transit engineering vehicle operation protection system only provides 2 pressure collection channels, respectively collects train pipe pressure and brake cylinder pressure, but does not collect and display the pressure of total air cylinder and equalizing air cylinder, which is inconvenient for the driver to better control the vehicle in operation. UTILITY MODEL CONTENT

[0004] In view of the deficiencies in the prior art, the utility model aims at providing a collection plug-in for urban rail transit engineering vehicle operation protection system, which effectively solves the problem that the prior art does not collect and display the pressure of total air cylinder and equalizing air cylinder, which is inconvenient for the driver to better control the vehicle in operation.

[0005] The technical solution thereof is to include: total air cylinder pressure sensor, equalizing air cylinder I pressure sensor, equalizing air cylinder II pressure sensor, simulation quantity extension plug-in, main control plug-in, screen display, characterized in that the total air cylinder pressure sensor, equalizing air cylinder I pressure sensor and equalizing air cylinder II pressure sensor are connected to the simulation quantity extension plug-in through cable, the simulation quantity extension plug-in is connected to the main control plug-in through CAN, and the main control plug-in is connected to the screen display.

[0006] The utility model has the beneficial effects that: the total air cylinder pressure sensor, equalizing air cylinder I pressure sensor and equalizing air cylinder II pressure sensor convert the collected pressure signals into electric signals, and transmit the electric signals to the simulation quantity extension plug-in through cable; the simulation quantity extension plug-in samples and processes 3 pressure signals, and sends the collected pressure information to the main control plug-in through CAN channel; the main control plug-in processes and converts the received pressure information, and sends the processed pressure information to the screen display for display; on the basis of only supporting the collection of 2 pressure signals, the extension increases 3 pressure signals, which enables the driver to better control the engineering vehicle in operation, and improves the usability of urban rail transit engineering vehicle operation protection system. BRIEF DESCRIPTION OF DRAWINGS

[0007] Figure 1 The system structure diagram of the utility model. DETAILED DESCRIPTION

[0008] For the foregoing and other technical content, features and effects related to the utility model, the following will be described in conjunction with the accompanying drawings. Figure 1 The detailed description of the embodiments will be clearly presented. The structural content mentioned in the following embodiments is referred to the drawings.

[0009] The exemplary embodiments of the utility model will be described below with reference to the accompanying drawings.

[0010] Embodiment one, the collection plug-in for the urban rail transit engineering vehicle operation protection system, comprising: total air cylinder pressure sensor, equalizing air cylinder I pressure sensor, equalizing air cylinder II pressure sensor, analog quantity expansion plug-in, main control plug-in, screen display, the total air cylinder pressure sensor, equalizing air cylinder I pressure sensor, equalizing air cylinder II pressure sensor are respectively installed at the corresponding position of total air cylinder, equalizing air cylinder I, equalizing air cylinder II, can be TQG14E1 type pressure sensor, with high precision and reliability, the measurable range is 0kPa~1000kPa, the output mode is analog signal output, the collected pressure signal is converted into electric signal, and the electric signal is transmitted to the analog quantity expansion plug-in through the cable, the analog quantity expansion plug-in samples and processes 3-way pressure signals, and sends the collected pressure information to the main control plug-in through the CAN channel, and the main control plug-in sends the received pressure information to the screen display after processing and conversion for display, on the basis that only 2-way pressure signals are collected at present, 3-way pressure signals are expanded and added, which can make the driver better control the engineering vehicle during operation, and the availability of the urban rail transit engineering vehicle operation protection system is improved.

[0011] Embodiment two: the analog quantity expansion plug-in is installed at the standby slot position, AD conversion module and MCU are configured, three plugs of the front panel are respectively connected with the total air cylinder pressure sensor, equalizing air cylinder I pressure sensor and equalizing air cylinder II pressure sensor, and three-way pressure signals are collected in real time, after three-way pressure signals are sampled by AD in the plug-in, the pressure information is sent to the main control plug-in according to the predetermined CAN communication protocol format and the agreed period after being filtered and processed by the MCU.

[0012] The utility model is used in the urban rail transit engineering vehicle operation protection system, and the analog quantity expansion plug-in is added on the basis of the urban rail transit engineering vehicle operation protection, the collection and display of the total air cylinder pressure, equalizing air cylinder I pressure and equalizing air cylinder II pressure information are added on the basis of the system functions, which can make the driver better control the engineering vehicle during operation, and the availability of the urban rail transit engineering vehicle operation protection system is improved.

Claims

1. A analog quantity extension acquisition plug-in suitable for urban rail transit engineering vehicle operation protection system, comprising: The total air cylinder pressure sensor, the equalizing air cylinder I pressure sensor, the equalizing air cylinder II pressure sensor, the analog quantity expansion plug-in, the main control plug-in and the screen display are characterized in that the total air cylinder pressure sensor, the equalizing air cylinder I pressure sensor and the equalizing air cylinder II pressure sensor are connected with the analog quantity expansion plug-in through a cable, the analog quantity expansion plug-in is connected with the main control plug-in through CAN, the main control plug-in is connected with the screen display, the analog quantity expansion plug-in is installed in a spare slot position, an AD conversion module and an MCU are configured, three collected pressure signals are processed through the AD conversion module, and the MCU sends pressure information to the main control plug-in according to a predetermined CAN communication protocol format and an agreed period, and the total air cylinder pressure sensor, the equalizing air cylinder I pressure sensor and the equalizing air cylinder II pressure sensor are TQG14E1 type pressure sensors.

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