CN218041417U - Interface board card device for vehicle-mounted safety monitoring system - Google Patents

Abstract

The utility model belongs to the technical field of the interface integrated circuit board, a interface board clamps and puts for on-vehicle safety monitoring system is disclosed, keep apart conversion module, a plurality of CAN isolation conversion module, a plurality of MVB transceiver module, a plurality of TRDP communication module, CAN communication module, communication interface and internal communication interface including DI interface circuit, DO interface circuit, CPU module, MVB transceiver controller module, ethernet. The utility model discloses an interface board clamps and puts and utilizes the built-in selection function of CPU module, whether the realization is worked interface module circuit and is selected, with the demand that reaches the matching, make the communication conversion that equipment supported multiple agreement module, the application scope of equipment is improved, the switch characteristic and the isolation control principle of utilizing opto-coupler and relay have realized the collection and the output of digital quantity, control the communication for the train and provide a redundant decision-making mode, increase the credibility of judging to equipment, provide the lamp simultaneously and show indicating circuit, make things convenient for the user of service visual inspection communication state.

Description

Interface board card device for vehicle-mounted safety monitoring system

Technical Field

The utility model relates to an interface board clamps and puts for on-vehicle safety monitoring system belongs to interface integrated circuit board technical field.

Background

The interface board is a board card which can match various network communication interfaces according to the type of a required network communication protocol on the premise of not increasing the network communication interfaces to carry out mutual communication with the connected equipment;

when the communication equipment connected with the interface board module in a single communication form fails, the communication function fails, so that the function of the equipment fails, and at the moment, a redundant communication mode is needed to avoid the problems.

The communication between equipment and trains is usually completed in modes of MVB communication, TRDP communication and the like on high-speed trains and motor train units, and the module equipment with a single communication mode has poor universality and often only supports one communication mode or provides a plurality of communication interfaces. When the vehicle communication form is changed, large-scale replacement of the equipment connecting cable or board card is required, which increases the cost.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a solve above-mentioned problem, designed an interface board card device for on-vehicle safety monitoring system, solved the single problem of interface board module communication form, made the interface board card pass with a integrated circuit board and need not to change under the prerequisite of wiring support multiple communication protocol, provide redundant judgement to important information simultaneously, increased the suitable scene of equipment and the credibility of information content. Meanwhile, a multicolor LED lamp display indicating circuit is provided on the panel of the equipment and used for judging the communication mode and the communication state.

The technical scheme of the utility model:

an interface board card device for a vehicle-mounted safety monitoring system comprises a CPU module 103, an MVB transceiver controller module 104, an Ethernet isolation conversion module 105, a CAN isolation conversion module 106, an MVB transceiver module, a TRDP communication module, a CAN communication module, an external communication interface, an internal communication interface 115 and a light display indicating circuit 116;

the MVB transceiving controller module 104, the Ethernet isolation conversion module 105, the CAN isolation conversion module 106, the internal communication interface 115 and the light display indicating circuit 116 are respectively connected with the CPU module 103; the MVB transceiver controller module 104 is respectively connected with a plurality of MVB transceiver modules, the Ethernet isolation conversion module 105 is respectively connected with a plurality of TRDP communication modules, and the CAN isolation conversion module 106 is respectively connected with a plurality of CAN communication modules; an MVB transceiver module, a TRDP communication module and a CAN communication module are correspondingly connected with an external communication interface;

the interface board card device also comprises a DI interface circuit 101, a DO interface circuit 102, the DI interface circuit 101, a CPU module 103 and an internal communication interface 115 which are connected in sequence and used as redundant data input; the D0 interface circuit 102, the CPU module 103, and the internal communication interface 115 are connected in sequence, and output as redundant data.

Preferably, the DI interface circuit receives external data input in the form of digital quantity and transmits the external data input to the CPU module; data sent by an external system (such as a train control system) is received through the DI circuit, processed by the CPU module and transmitted to equipment connected with the interface board card device in the vehicle-mounted safety monitoring system through the internal communication interface.

Preferably, the D0 interface circuit receives internal data transmitted by the CPU module and sends the internal data to an external system in a digital quantity mode; the internal data refers to data information provided by equipment connected with an interface board card device in the vehicle-mounted safety monitoring system, and the equipment information received by the internal communication interface is processed by the CPU module through the DO interface circuit and then is sent to an external system, such as a train control system.

Furthermore, the number of the MVB transceiver modules is at least two, the number of the TRDP communication modules is at least two, and the number of the CAN communication modules is at least two.

Further, the light display indicating circuit 116 is formed by connecting three common cathode LED indicating lamps with red, green and yellow colors respectively with 3 different GPIOs of the CPU module 103 after passing through a protection circuit, wherein the red LED is matched with an MVB communication form, the green LED is matched with a TRDP communication form, and the yellow LED is matched with a CAN communication form.

The utility model has the advantages that: the interface board card device for the vehicle-mounted safety monitoring system utilizes the built-in selection function of the CPU module to realize the selection of whether an interface module circuit works or not so as to achieve the purpose of matching requirements, so that the equipment supports the communication conversion of various protocol modules, and the application range of the equipment is improved; important parameters are received and sent in a digital quantity mode through the DI interface circuit and the DO interface circuit, a redundant communication mode is provided for train control communication, and the reliability of equipment judgment is increased; the DI interface circuit and the DO interface circuit respectively utilize the switching characteristics and the isolation control principle of an optical coupler and a relay to ensure the safety of equipment and simultaneously ensure the interference of an external circuit; the communication form of the equipment and whether data interaction exists are judged by the color of the indicator lamp displayed by the lamp display indicating circuit and the constant lighting and flashing of the indicator lamp.

Drawings

Fig. 1 is a structural diagram of an interface board card device of the present invention.

In the figure: 101DI interface circuitry; 102DO interface circuitry; 103 a CPU module; 104MVB receiving and transmitting controller module; 105 an Ethernet isolation conversion module; 106CAN isolation conversion module; 107 first MVB transceiver module; 108 a first TRDP communication module; 109 a first CAN communication module; 110 second MVB transceiver module; 111 a second TRDP communication module; 112 a second CAN communication module; 113 a first pair of external communication interfaces; 114 a second external-to-external communication interface; 115 internal communication interface; 116 to illuminate the indicating circuit.

Detailed Description

The following further describes a specific embodiment of the present invention with reference to the drawings and technical solutions.

An interface board card device for a vehicle-mounted safety monitoring system, as shown in fig. 1, includes a DI interface circuit 101, a DO interface circuit 102, a CPU module 103, an MVB transceiver controller module 104, an ethernet isolation conversion module 105, a CAN isolation conversion module 106, a first MVB transceiver module 107, a first TRDP communication module 108, a first CAN communication module 109, a second MVB transceiver module 110, a second TRDP communication module 111, a second CAN communication module 112, a first external-to-external communication interface 113, a second external-to-external communication interface 114, an internal communication interface 115, and a light display indicating circuit 116;

the DI interface circuit 101, the DO interface circuit 102, the MVB transceiver controller module 104, the ethernet isolation conversion module 105, the CAN isolation conversion module 106, the internal communication interface 115, and the light display indicating circuit 116 are respectively connected to the CPU module 103, the MVB transceiver controller module 104 is respectively connected to the first MVB transceiver module 107 and the second MVB transceiver module 110, the ethernet isolation conversion module 105 is respectively connected to the first TRDP communication module 108 and the second TRDO communication module 111, the CAN isolation conversion module 106 is respectively connected to the first CAN communication module 109 and the second CAN communication module 112, the first MVB transceiver module 107, the first TRDP communication module 108, and the first CAN communication module 109 are respectively connected to the first external communication interface 113, the second external communication interface 114 is respectively connected to the second MVB transceiver module 110, the second TRDP communication module 111, and the second CAN communication module 112 is respectively connected to the second external communication interface 114.

The DI interface circuit 101 is an external state input circuit and can receive 70VDC-150VDC voltage, when the train control system sends a corresponding instruction, the DI interface circuit 101 can be input with 70VDC-150VDC voltage, at the moment, the DI interface circuit 101 detects a corresponding high-level signal, and the signal is transmitted to the CPU module 103 in an optical coupling isolation mode. Because the module adopts the mode of optical coupling input, the DI level detection point is not electrically connected with the internal signal acquisition circuit, thereby ensuring that the interior of the interface board card device is isolated from the DI level detection point, ensuring the safety of the device and avoiding the electromagnetic interference of strong electricity.

The DO interface circuit 102 outputs an on/off state, and can send internal information received by the internal communication interface 115 to the train control system in a digital quantity manner after being processed by the CPU module 103, and the information content is normal or failure. The DO interface module 102 realizes output of DO switching value by means of a relay, and controls power on and power off of a relay coil through the interface board card device D0 interface circuit 102, so as to control on and off of relay contacts, realize isolation of an internal circuit and an external circuit by the relay, and protect the interface board card device from interference of the external circuit.

The principle of network matching is that the first external communication interface 113 and the second external communication interface 114 adopt a 4-pin connector design, when the protocol type is MVB, 1-4 pins of the connector design correspond to a P pole of a line a of MVB, an N pole of a line a of MVB, a P pole of a line B of MVB and an N pole of a line B of MVB, and when the protocol type is TRDP, 1-4 pins correspond to a transmitting positive pole, a receiving positive pole, a transmitting negative pole and a receiving negative pole. When the protocol type is CAN communication, the 1-4 needles are respectively CANH, CANL and CANG and are forbidden. The CPU module 103 is used for matching and selecting communication modes through a built-in system, when one communication mode is selected, the other two communication modes are isolated at the same time, the corresponding external communication interface is matched to be the selected communication mode to complete the mutual communication with external equipment, the data is converted into a corresponding communication protocol form after being transported and processed by receiving the data sent by the internal communication interface 115, and the data is output to the first external communication interface 113 and the second external communication interface 114 through the communication module.

The utility model discloses interface board clamps the theory of operation of device as follows:

(1) Data entry

The interface board card device receives communication data issued by a train control system through a matched external communication interface (such as a first external communication interface 113), sequentially transmits the communication data to the CPU module 103 through a first MVB transceiver module 107 and an MVB transceiver controller module 104, or a first TRDP transceiver module 108 and an Ethernet isolation conversion module 105, or a first CAN communication module 109 and a CAN isolation conversion module 106, and forwards the data to equipment needing the data through an internal communication interface 115 after the data processing is carried out on the CPU module 103;

meanwhile, the DI interface circuit 101 also receives important parameters (such as vehicle speed and the like) issued by the train control system, receives the parameters in a digital quantity form, transmits the parameters to the CPU module 103, and forwards the parameters to the equipment needing data through the internal communication interface 115;

the data input through the DI interface circuit and the data input through the external communication interface are redundant to each other.

(2) Data output

The CPU module 103 of the interface board card device receives data sent by the device through the internal communication interface 115, converts the data into a set type communication protocol, and isolates the remaining communication types, and sends the data content to the train control system in an MVB communication protocol mode through the MVB transceiver controller module 104, the first MVB transceiver module 107, the second MVB transceiver module 110, and the first external communication interface 113/the second external communication interface 114, or sends the data content to the train control system in a TRDP communication protocol mode through the ethernet isolation conversion module 105, the first TRDP communication module 108, the second TRDP communication module 111, and the first external communication interface 113/the second external communication interface 114, or sends the data content to the train control system in a CAN communication protocol mode through the CAN isolation conversion module 106, the first CAN communication module 109, the second CAN communication module 112, and the first external communication interface 113/the second external communication interface 114;

meanwhile, the DO interface circuit 102 sends the internal information received by the internal communication interface 115 to the train control system in a digital manner after being processed by the CPU module 103 (for example, the device state information in the communication protocol is extracted, and the information content is device normal or failure);

the data output via the DO interface circuit and the data output via the external communication interface are mutually redundant.

(3) Lamp display indicator

The principle of the light display indicating circuit is that three LED indicating lamps with common cathodes, red, green and yellow, are respectively connected with 3 different GPIOs of the CPU module 103 after passing through a protection circuit in the light display indicating circuit, the red LED is matched with an MVB communication form, the green LED is matched with a TRDP communication form, and the yellow LED is matched with a CAN communication form. And after the equipment completes network matching, the indicator lamp corresponding to the communication form can be lightened through the corresponding GPIO pin to remind the user equipment of the current communication form. Meanwhile, when data exchange exists in the equipment, the CPU module can control the corresponding GPIO port to turn over at high and low levels at a specific frequency, so that the indicator lamp flickers at the specific frequency, when no data exchange exists, a program in the CPU can be in a blocking state to wait for data, at the moment, the CPU module can control the GPIO port to output and light an LED state level, so that the corresponding LED is normally lighted, and a user is reminded of no data exchange at the moment.

Claims (5)

1. An interface board card device for a vehicle-mounted safety monitoring system is characterized by comprising a CPU module (103), an MVB transceiver controller module (104), an Ethernet isolation conversion module (105), a CAN isolation conversion module (106), an MVB transceiver module, a TRDP communication module, a CAN communication module, an external communication interface, an internal communication interface (115) and a light display indicating circuit (116);

the MVB transceiving controller module (104), the Ethernet isolation conversion module (105), the CAN isolation conversion module (106), the internal communication interface (115) and the light display indicating circuit (116) are respectively connected with the CPU module (103); the MVB transceiving controller module (104) is respectively connected with a plurality of MVB transceiving modules, the Ethernet isolation conversion module (105) is respectively connected with a plurality of TRDP communication modules, and the CAN isolation conversion module (106) is respectively connected with a plurality of CAN communication modules; an MVB transceiver module, a TRDP communication module and a CAN communication module are correspondingly connected with an external communication interface;

the interface board card device also comprises a DI interface circuit (101) and a DO interface circuit (102), wherein the DI interface circuit (101) and the CPU module (103) are sequentially connected with an internal communication interface (115); the D0 interface circuit (102) and the CPU module (103) are sequentially connected with the internal communication interface (115).

2. The interface board card device of claim 1, wherein there are at least two MVB transceiver modules, at least two TRDP communication modules, and at least two CAN communication modules.

3. The interface board card device according to claim 1 or 2, wherein the light display indicating circuit (116) is formed by connecting three common cathode LED indicating lamps with colors of red, green and yellow with 3 different GPIOs of the CPU module (103) after passing through a protection circuit, wherein the red LED is matched with an MVB communication form, the green LED is matched with a TRDP communication form, and the yellow LED is matched with a CAN communication form.

4. The interface board card device according to claim 1, characterized in that the DI interface circuit (101) receives external data input in the form of digital quantities and transmits to the CPU module (103).

5. The interface board card device according to claim 1, wherein the D0 interface circuit (102) receives internal data transferred from the CPU module (103) and transmits the internal data to an external system by means of digital quantity.

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