CN213987226U

CN213987226U - Car door data acquisition device integrating WIFI and field bus

Info

Publication number: CN213987226U
Application number: CN202023263695.2U
Authority: CN
Inventors: 董先鹏; 孔凡超; 张金城; 刘显峰; 刘海全; 王浩轩; 井晨志; 涂晓立; 许志兴; 王爱青
Original assignee: Nanjing Kangni Mechanical and Electrical Co Ltd; CRRC Qingdao Sifang Co Ltd; Jinan Rail Transit Group Co Ltd
Current assignee: Nanjing Kangni Mechanical and Electrical Co Ltd; CRRC Qingdao Sifang Co Ltd; Jinan Rail Transit Group Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-08-17
Anticipated expiration: 2030-12-29

Abstract

The utility model discloses a car door data acquisition device integrating WIFI and field bus, which comprises a vehicle bus communication module, a data acquisition processing module, a wireless communication module and a system power supply module; the input end of the vehicle bus communication module is respectively connected with each door controller, and the output end of the vehicle bus communication module is connected with the input end of the data acquisition processing module; the input end of the data acquisition and processing module is also connected with a door controller connected with a driving motor and a system power supply module respectively, the output end of the data acquisition and processing module is connected with a ground server through a WIFI circuit of the wireless communication module, and the ground server is connected with a display end. The utility model discloses a device supports vehicle field bus and WIFI wireless communication network's transmission simultaneously, does not change under the prerequisite of the original function of door controller, realizes the collection and the unified transmission of each door controller data of whole train, has the universality.

Description

Car door data acquisition device integrating WIFI and field bus

Technical Field

The utility model belongs to subway guest room door system, concretely relates to door data acquisition device of integrated WIFI and field bus.

Background

The existing door controller is based on the pure vehicle field bus (CAN/485/MVB/Ethernet, etc.) to collect and transmit the data or to transmit the data to the ground by using the data forwarding device in the vehicle. Both transmission modes have certain limitations, for example, when a vehicle field bus (CAN/485/MVB/ethernet, etc.) is used for acquiring and transmitting data in a carriage, the limitation of an in-vehicle data forwarding device is easily caused; when the in-vehicle data forwarding device is used for transmission, when the rail vehicle runs underground, data packet loss is easily caused due to poor signals.

SUMMERY OF THE UTILITY MODEL

Utility model purpose: an object of the utility model is to provide a door data acquisition device that has the universality, overcomes the integrated WIFI and the field bus of single transmission mode limitation.

The technical scheme is as follows: the utility model comprises a vehicle bus communication module, a data acquisition and processing module, a wireless communication module and a system power supply module; the input end of the vehicle bus communication module is respectively connected with each door controller, and the output end of the vehicle bus communication module is connected with the data acquisition and processing module; the input end of the data acquisition and processing module is also connected with a door controller connected with a driving motor and a system power supply module respectively, the output end of the data acquisition and processing module is connected with a ground server through a WIFI circuit of the wireless communication module, and the ground server is connected with a display end.

The vehicle bus communication module comprises a communication interface, is directly connected with each door controller through the communication interface, and can receive and monitor the rail transit vehicle field bus state signals transmitted between the door controllers under the condition that the original circuit and signal transmission are not influenced.

The data acquisition processing module comprises a storage circuit, a main control chip processing circuit and a watchdog circuit, and the storage circuit and the watchdog circuit are both in two-way connection with the main control chip processing circuit to realize two-way data storage and reading communication.

The main control chip processing circuit of the data acquisition and processing module is connected with the door controller connected with the driving motor through the SPI interface, can acquire the data of the door controller and the working parameter data of the door motor at the same time, and is flexible.

The watchdog circuit adopts an STM8S chip, board-level space is saved, and instability of peripheral analog devices is avoided.

The system power supply module comprises a power supply conversion circuit, the power supply of the system power supply module is provided by a door controller connected with a driving motor, and the system power supply module supplies power to each module after being converted into voltages of different sizes through the power supply conversion circuit, so that the power supply requirements of different modules can be met.

Has the advantages that: compared with the prior art, the utility model, its beneficial effect lies in: the automobile door controller and the data acquisition and transmission device are organically integrated, the acquisition and transmission of the operation parameters of each automobile door controller are realized simultaneously on the premise of not influencing the normal work of each automobile door controller, two transmission modes of a vehicle field bus (CAN/485/MVB/Ethernet and the like) and WIFI wireless network communication CAN be supported simultaneously, the main acquired and transmitted data comprise the operation parameters (current, rotating speed and torque) of the automobile door motor and the self state data (power supply voltage, DSP power supply voltage, MVB power supply voltage, multiple voltage analog quantity signals such as driving motor voltage and the like) of the automobile door controller, and a plurality of digital quantity signals such as CAN voltage state, relay state, IPM protection state and the like.

Drawings

Fig. 1 is a frame diagram of the hardware structure of the present invention.

Detailed Description

The invention is described in further detail below with reference to specific embodiments and the attached drawings.

As shown in fig. 1, the utility model discloses a vehicle bus communication module, data acquisition and processing module, wireless communication module and system power module. The input end of the vehicle bus communication module is respectively connected with each door controller, in the embodiment, the input end of the vehicle bus communication module is respectively connected with the door controller A and the door controller B. The vehicle bus communication module is directly connected with the door controller A and the door controller B through the communication interface, so that the rail transit vehicle field bus state signals transmitted between the monitoring door controllers are received under the condition that the original circuit and signal transmission are not influenced, and the field bus state signals are transmitted to the data acquisition and processing module through the communication interface. The gate controller A and the gate controller B are connected in a hand-in-hand mode; the door controller A is connected with the driving motor, and the door controller A, the door controller B and the driving motor are auxiliary equipment. The output end of the vehicle bus communication module, the door controller A and the system power supply module are respectively connected with the input end of the data acquisition and processing module. The output end of the data acquisition processing module is connected with a ground server through a WIFI circuit of the wireless communication module, and the ground server is connected with the display end.

The data acquisition and processing module is used for simultaneously acquiring and monitoring field bus (CAN/485/MVB/Ethernet and the like) data of the rail transit vehicle and working parameter (current, rotating speed and torque) data of a vehicle door motor and comprises a storage circuit, a main control chip processing circuit and a watchdog circuit. The storage circuit and the watchdog circuit are both bidirectionally connected with the main control chip processing circuit. Main control chip processing circuit still is connected with door control ware A through the SPI interface for gather driving motor and door self real-time status information, compare with the door controller that generally has the acquisition control function, the problem of multiple vehicle field bus data signal has not only been solved and gather door control ware self data and this function of door motor working parameter data simultaneously, greatly increased the flexibility of this device, this device can reach very high measurement accuracy to door driving motor's corner, torque and rotational speed isoparametric in theory, and the real-time is very high, and has the adjustable function of measuring range. The main control chip processing circuit also receives a field bus state signal transmitted by the vehicle bus communication module. The main control chip processing circuit collects and processes parameters such as rotating speed, rotating angle and torque related to the driving motor data and vehicle door controller data, when a vehicle enters a station, the WIFI circuit of the wireless communication module is used for quickly establishing connection with a ground server, the data are transmitted to the ground server in real time, and after algorithm processing such as an expert system is carried out, vehicle door state curve waveforms are displayed at a display end in real time, so that complete vehicle door data collection, transmission and processing functions are achieved. In the equipment maintenance and upgrade process, the WIFI circuit of the wireless communication circuit module can be used for debugging and maintaining the equipment.

The storage circuit of the data acquisition processing module comprises an off-chip eMMC circuit and a DDR storage chip circuit, the off-chip DDR storage circuit performs local large-capacity storage on vehicle door data and performs bidirectional communication with the main control chip, and the off-chip eMMC circuit performs starting and guiding operation on an operating system and the like. The storage circuit and the main control chip processing circuit are connected in a bidirectional mode to achieve bidirectional data storage and reading communication. In this embodiment, the watchdog circuit adopts the STM8S chip, realizes the hardware watchdog function as the follow control chip of supplementary main control chip work, can practice thrift board level space greatly, avoids adopting the instability of peripheral analogue means, provides the assurance for the reliable operation of equipment, when the equipment node crashes, can self-reset and restart.

The power supply of the system power supply module is provided by the gate controller A, the system power supply circuit module converts the DC5V voltage provided by the gate controller A into DC3.3V and DC1.8V voltages required by a board level with extremely low noise through a power supply conversion circuit, stable voltages are provided for the rest modules, and the generated DC5V, DC3.3V and DC1.8V meet the power supply requirements of different modules.

The utility model discloses with door controller and data acquisition, transmission device is the same together organically, realize the collection and the transmission to each door controller running parameter simultaneously under the prerequisite that does not influence each door controller normal work, CAN support the transmission mode of vehicle field bus (CAN/485 MVB ethernet etc.) and WIFI wireless network communication simultaneously, the data of main collection and transmission have the working parameter (electric current) of door motor and the state data (supply voltage, DSP supply voltage, MVB supply voltage, multiple voltage analog quantity signals such as driving motor voltage, and CAN voltage status, the relay state, a plurality of digital quantity signals such as IPM protected state etc.).

The utility model discloses with vehicle bus communication module, wireless communication module is integrated to a circuit board on, with door controller and data acquisition, the transmission device three is organic unified, realize the collection and the transmission to each door controller running parameter simultaneously under the prerequisite that does not influence each door controller normal work, place inside the door controller in the circuit board, CAN support vehicle field bus (CAN/485 MVB ethernet etc.) and WIFI wireless communication network's transmission simultaneously, universal adaptability has. The layout mode can realize the data collection and the unified transmission of all the door controllers of the whole train on the premise of not changing the original functions of the door controllers, and the device has high integration level and strong practicability.

Claims

1. The utility model provides an integrated WIFI and field bus's door data acquisition device, includes vehicle bus communication module, its characterized in that: the system also comprises a data acquisition processing module, a wireless communication module and a system power supply module; the input end of the vehicle bus communication module is respectively connected with each door controller, and the output end of the vehicle bus communication module is connected with the input end of the data acquisition processing module; the input end of the data acquisition and processing module is also connected with a door controller connected with a driving motor and a system power supply module respectively, the output end of the data acquisition and processing module is connected with a ground server through a WIFI circuit of the wireless communication module, and the ground server is connected with a display end.

2. The integrated WIFI and fieldbus vehicle door data acquisition device of claim 1, wherein: the vehicle bus communication module comprises a communication interface, and the vehicle bus communication module is directly connected with each door controller through the communication interface.

3. The integrated WIFI and fieldbus vehicle door data acquisition device of claim 1, wherein: the data acquisition processing module comprises a storage circuit, a main control chip processing circuit and a watchdog circuit, and the storage circuit and the watchdog circuit are both in two-way connection with the main control chip processing circuit.

4. The WIFI and field bus integrated vehicle door data acquisition device of claim 3, wherein: and a main control chip processing circuit of the data acquisition processing module is connected with a door controller connected with a driving motor through an SPI interface.

5. The WIFI and field bus integrated vehicle door data acquisition device of claim 3, wherein: the watchdog circuit adopts an STM8S chip.

6. The WIFI and field bus integrated vehicle door data acquisition device of claim 3, wherein: the system power supply module comprises a power supply conversion circuit, the power supply of the system power supply module is provided by a door controller connected with a driving motor, and the system power supply module supplies power to each module after the power supply is converted into voltages of different sizes through the power supply conversion circuit.