CN210518407U - Broadband data transmission module for rail transit - Google Patents

Abstract

The utility model discloses a broadband data transmission module and implementation method for track traffic, this module circuit is MT29C4G96 MA's memory chip, SD card interface equipment, model for the model is MAX 3232's serial port module, LCD, model are DM 900's vehicle event data recorder including MPU that adopts the model to be AM3715, the model is EM 350's LTE module, the model is TPS65930, the model is the model. The technical problem of data bandwidth is solved by improving the structure of a data transmission circuit in the prior art and adopting the measures of an LTE module, so that large data are transmitted in a video mode; and the video mode reports the scheduling center and the maintenance group to obtain professional guidance in time, so that ambiguity caused by voice description is avoided. The voice communication device can be used independently, transmits and processes broadband data, can be externally connected with operating equipment and display equipment, and overcomes the defect of single voice service in the prior art.

Description

Broadband data transmission module for rail transit

Technical Field

The utility model relates to a track traffic data transmission technique, in particular to broadband data transmission module for track traffic that broadband data transmission service is relevant for track traffic.

Background

In order to keep the sustainable development of economic health of China, the nation sets a strategic policy of 'guarantee growth, internal demand expansion and structure adjustment', wherein rail transit is used as an important hand grab for guarantee growth to obtain important support. The rail transit is an important infrastructure of the country, is a main artery of a traffic system, and has an important role in economic, political and cultural development.

Safety is a permanent theme of rail transit, and not only influences the production efficiency and economic benefit of operation enterprises, but also has a great influence on social stability and economic development. In order to meet the requirements of safety and transmission of various complex data, large data channels are established between a driver and a control center and among stations, station staff of each station, a locomotive and the control center, and information such as videos, images and the like is very necessary to be transmitted.

The prior data transmission circuit for rail transit adopts a TETRA narrow band channel to transmit data, and the defects and shortcomings of the circuit structure are as follows: the transmission rate is low, the bandwidth is narrow, and only a small amount of data service and voice transmission can be met. Due to the defect of low transmission bandwidth, the requirement of the current video service cannot be met when the narrow-band data transmits large data, and the technical problem that the transmission rate is improved by increasing the bandwidth is urgently needed to be solved.

Disclosure of Invention

The utility model aims at overcoming the not enough of prior art, to the video service of the big data volume in track traffic data transmission field, communication bandwidth needs increase to technical problem after this scheme solution bandwidth promotes provides a broadband data transmission module for track traffic very much. The technical problem of data bandwidth is solved by improving the structure of a data transmission circuit in the prior art and adopting the measures of an LTE module, so that large data can be transmitted in a video mode.

The utility model discloses a realize through such technical scheme: a broadband data transmission module for rail transit is characterized in that a module circuit comprises an MPU with the model of AM3715, an LTE module with the model of EM350, a power management chip with the model of TPS65930, a storage chip with the model of MT29C4G96MA, SD card interface equipment, a serial port module with the model of MAX3232, a liquid crystal display and a driving recorder with the model of DM 900.

The AM3715MPU is connected with the EM350LTE module through a Disable port, a Reset port, a 350_ INT port and a Wake port; the AM3715MPU is connected with the TPS65930 power management chip through an IIC bus, an MCBSP2 bus, an NRESWARM port, an NRESPWRON port, a 32KCLKOUT port and an HFCLKOUT port; the AM3715MPU is connected with a NAND flash memory in the MT29C4G96MA memory chip through a 32-bit SDRC address line, a 14-bit SDRC data line and an SDRC clock control line port, and is also connected with a mobile LPDRAM in the MT29C4G96MA memory chip through a 16-bit GPMC data line and a GPMC control line port; the AM3715MPU is connected with the SD card interface device through a data line, an MMC1_ CLK port and an MMC1_ CD port; the AM3715MPU is connected with the MAX3232 serial port module through the serial port 1, and the MAX3232 serial port module is connected with the debugging serial port; the AM3715MPU is connected with the liquid crystal display through a liquid crystal data line, an SPI bus and a clock control line port; the AM3715MPU is connected with the automobile data recorder DM900 through a data line and a control line; the automobile data recorder DM900 is externally connected with a network transformer; the AM3715MPU is connected to the audio circuit through the TDA _ MODE port.

The TPS65930 power management chip is connected with the OTG through an OTG _ VBUS port, an OTG _ P port, an OTG _ N port and an OTG _ ID port, and the OTG is used for externally connecting USB equipment; the TPS65930 power management chip is connected with the EM350LTE module through a Wake port; the TPS65930 power management chip is connected with the USB chip through a USB data line and a USB clock control line.

The EM350LTE module is connected with a SIM card; the USB chip is connected with the UD _ P port and the UD _ N port through the USB data line; the audio circuit is connected with the audio MIC and SPK input and output lines; the audio circuit is connected with the TPS65930 power management chip.

The utility model has the advantages that: the technical problem of data bandwidth is solved by improving the structure of a data transmission circuit in the prior art and adopting the measures of an LTE module, so that large data are transmitted in a video mode; the video mode of the design is adopted to report the scheduling center and the maintenance group, professional guidance is obtained in time, and ambiguity caused by voice description is avoided. The voice communication device can be used independently, transmits and processes broadband data, can be externally connected with operating equipment and display equipment, and overcomes the defect of single voice service in the prior art.

Drawings

Fig. 1 is a block diagram of the module circuit connection of the present invention.

Detailed Description

For a clearer understanding of the present invention, the following description is provided with reference to the accompanying drawings and examples.

As shown in fig. 1, the module circuit includes an MPU with a model of AM3715, an LTE module with a model of EM350, a power management chip with a model of TPS65930, a memory chip with a model of MT29C4G96MA, an SD card interface device, a serial port module with a model of MAX3232, a liquid crystal display, and a drive recorder with a model of DM 900; the AM3715MPU is connected with the EM350LTE module through a Disable port, a Reset port, a 350_ INT port and a Wake port; the AM3715MPU is connected with the TPS65930 power management chip through an IIC bus, an MCBSP2 bus, an NRESWARM port, an NRESPWRON port, a 32KCLKOUT port and an HFCLKOUT port; the AM3715MPU is connected with a NAND flash memory in the MT29C4G96MA memory chip through a 32-bit SDRC address line, a 14-bit SDRC data line and an SDRC clock control line port, and is also connected with a mobile LPDRAM in the MT29C4G96MA memory chip through a 16-bit GPMC data line and a GPMC control line port; the AM3715MPU is connected with the SD card interface device through a data line, an MMC1_ CLK port and an MMC1_ CD port; the AM3715MPU is connected with the MAX3232 serial port module through the serial port 1, and the MAX3232 serial port module is connected with a debugging serial port (UART 1); the AM3715MPU is connected with the liquid crystal display through a liquid crystal data line, an SPI bus and a clock control line port; the AM3715MPU is connected with the DM900 automobile data recorder through a data line and a control line; the DM900 automobile data recorder is externally connected with a network transformer (HR 911105); the AM3715MPU is connected to the audio circuit through the TDA _ MODE port.

The TPS65930 power management chip is connected with an OTG (USB On-The-Go) through an OTG _ VBUS port, an OTG _ P port, an OTG _ N port and an OTG _ ID port, wherein The OTG is used for externally connecting USB equipment; the TPS65930 power management chip is connected with the EM350LTE module through a Wake port; the TPS65930 power management chip is connected with a USB chip (USB 3320) through a USB data line and a USB clock control line.

The EM350LTE module is connected with the SIM card; the USB chip is connected with the UD _ P port and the UD _ N port through the USB data line; the audio circuit is connected with the audio MIC and SPK input and output lines; the audio circuit is connected with the TPS65930 power management chip.

The DM900 driving recorder is mainly characterized by a built-in 256M super cache memory, a 256Mhz ultrahigh-performance CPU, a fastest 60-frame/second video, a very wide angle of 170 degrees and a smallest body.

HR911105 embeds network transformer, status display lamp and resistance network, and the main function has: 1. signal coupling, 2 electrical isolation, 3 impedance matching, 4 noise suppression, 5 polarity transmission, and the HR911105 network transformer is convenient to use and saves the area on the board.

USB On-The-Go, commonly abbreviated USB OTG, is a complementary standard to The USB2.0 specification. It supports USB devices, such as digital audio players or cell phones, as hosts, allowing USB flash drives, mice, or keyboards to be connected thereto.

NAND flash is a better storage scheme than hard drives, which is especially apparent in low-capacity applications not exceeding 4 GB. As people continue to strive for lower power consumption.

The utility model relates to a principle: the EM350LTE module inside the data transmission module receives the wireless data signal and transmits the wireless data signal to the AM3715MPU, and the AM3715MPU parses corresponding content (such as video/audio, etc.), then displays the content on the liquid crystal screen of the data transmission module, and plays the audio through the speaker of the data transmission module. The data transmission module is connected with the DM900 automobile data recorder through a network port, receives information such as audio and video services, processes corresponding content through the AM3715MPU, transmits the content to the EM350LTE module, and transmits the content to the wireless base station through the EM350LTE module.

The utility model discloses the main function of realization:

1. the high-speed data transmission of the rail transit service can be realized, the single-user throughput is 8Mbps (uplink maximum data rate), the 2Mbps (downlink maximum data rate), and the video service can be transmitted.

2. The module is roughly divided into an EM350LTE module part, an AM3715MPU part, a TPS65930 power management chip part and an external interface part. The EM350LTE module part mainly performs call processing and data transmission functions; the AM3715MPU part mainly performs call control, data storage and communication control; the power TPS65930 Power management chip portion is primarily to provide power and wake-up control for the AM3715MPU portion.

3. The module provides communication and control interfaces such as an external NIC network interface, a USB interface, a serial port and the like.

4. The module adopts a plug board type structure, is used for a functional plug board of comprehensive communication equipment of a locomotive and a platform, and has the characteristic of convenient plugging and unplugging.

5. The module has the capability of completely compatible access to the TD-LTE private network.

6. The module adopts a high-performance MPU, can be optionally matched with a DSP chip, not only can transmit a large data signal, but also can carry out various analysis and compression processing and coding and decoding processing on the large data signal.

7. The android operating system is adopted in the module, and the system is deeply optimized and extremely high in stability.

The utility model discloses use and have following advantage on communication equipment:

1. will the utility model discloses on the module inserts communication equipment such as locomotive, platform, this module and equipment room adopted serial ports transmission control data, USB interface or net gape transmission big data.

2. The module can provide a high-speed transmission channel for the accessed equipment, so that the equipment has the capacity of accessing the LTE private network.

3. The driver, crew, station staff and other personnel can report the emergent conditions such as tunnel accidents, equipment faults and the like to a dispatching center, a maintenance group and the like in a video mode to obtain timely professional guidance, so that ambiguity caused by voice description is avoided.

4. The device can also be used independently to transmit and process broadband data, and the module can be externally connected with an operation device and a display device as required.

Claims (1)

1. A broadband data transmission module for rail transit is characterized in that a module circuit comprises an MPU with the model of AM3715, an LTE module with the model of EM350, a power management chip with the model of TPS65930, a memory chip with the model of MT29C4G96MA, SD card interface equipment, a serial port module with the model of MAX3232, a liquid crystal display and a driving recorder with the model of DM 900;

the AM3715MPU is connected with the EM350LTE module through a Disable port, a Reset port, a 350_ INT port and a Wake port; the AM3715MPU is connected with the TPS65930 power management chip through an IIC bus, an MCBSP2 bus, an NRESWARM port, an NRESPWRON port, a 32KCLKOUT port and an HFCLKOUT port; the AM3715MPU is connected with a NAND flash memory in the MT29C4G96MA memory chip through a 32-bit SDRC address line, a 14-bit SDRC data line and an SDRC clock control line port, and is also connected with a mobile LPDRAM in the MT29C4G96MA memory chip through a 16-bit GPMC data line and a GPMC control line port; the AM3715MPU is connected with the SD card interface device through a data line, an MMC1_ CLK port and an MMC1_ CD port; the AM3715MPU is connected with the MAX3232 serial port module through the serial port 1, and the MAX3232 serial port module is connected with the debugging serial port; the AM3715MPU is connected with the liquid crystal display through a liquid crystal data line, an SPI bus and a clock control line port; the AM3715MPU is connected with the DM900 automobile data recorder through a data line and a control line; the DM900 automobile data recorder is externally connected with a network transformer; the AM3715MPU is connected with the audio circuit through a TDA _ MODE port;

the TPS65930 power management chip is connected with the OTG through an OTG _ VBUS port, an OTG _ P port, an OTG _ N port and an OTG _ ID port, and the OTG is used for externally connecting USB equipment; the TPS65930 power management chip is connected with the EM350LTE module through a Wake port; the TPS65930 power management chip is connected with the USB chip through a USB data line and a USB clock control line;

the EM350LTE module is connected with a SIM card; the USB chip is connected with the UD _ P port and the UD _ N port through the USB data line; the audio circuit is connected with the audio MIC and SPK input and output lines; the audio circuit is connected with the TPS65930 power management chip.

Images