CN203930399U

CN203930399U - The contactless logic control element of a kind of CRH2 EMUs

Info

Publication number: CN203930399U
Application number: CN201420356628.0U
Authority: CN
Inventors: 蒋富
Original assignee: Central South University
Current assignee: Central South University
Priority date: 2014-06-30
Filing date: 2014-06-30
Publication date: 2014-11-05
Anticipated expiration: 2024-06-30

Abstract

The utility model discloses the contactless logic control element of a kind of CRH2 EMUs, comprise two groups of control circuits that structure is identical, every group of control circuit comprises n load module and n output module, described n the equal Access Control module of load module output terminal, described n output module input end is all connected with described control module; Described control module is connected with communication module, display alarm module, power module; Described power module provides power supply for described load module, communication module, output module, display alarm module; Between the control module of described two groups of control circuits, be connected to conversion equipment.Logic control element of the present utility model can substitute the relay of CRH2 EMUs, has solved the noise that uses relay to bring and greatly, has easily produced short problem of electromagnetic interference (EMI), serviceable life, and reliability is high.

Description

The contactless logic control element of a kind of CRH2 EMUs

Technical field

The utility model relates to the contactless logic control element of a kind of CRH2 EMUs.

Background technology

The relay board of CRH2 EMUs relay scheme that adopt or Mitsubishi, is transferred the possession of and is produced by domestic little ShitoJin Chuan company at present.The actuating of relay has noise, and easily produces electromagnetic interference (EMI), and serviceable life is short, has certain potential safety hazard for the security of operation of motor train unit, is unfavorable for motor train unit train operation for a long time at a high speed.

Summary of the invention

Technical problem to be solved in the utility model is, for above-mentioned existing technical deficiency, to provide a kind of CRH2 EMUs contactless logic control element.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is: a kind of CRH2 EMUs are contactless logic control element, comprise two groups of control circuits that structure is identical, every group of control circuit comprises n load module and n output module, described n the equal Access Control module of load module output terminal, described n output module input end is all connected with described control module; Described control module is connected with communication module, display alarm module, power module; Described power module provides power supply for described load module, communication module, output module, display alarm module; Between the control module of described two groups of control circuits, be connected to conversion equipment; Described load module input end receives switching value input signal and the Transistor-Transistor Logic level signal of CRH2 type motor-car.

Described load module comprises the voltage regulating module, the first light-coupled isolation module, the first phase inverter that connect successively.

Described output module comprises and door, is describedly connected with described control module with an input end of door, is describedly connected with an output terminal of another input end and double D trigger; Another output terminal of described double D trigger is connected with described control module; Describedly be connected with the second light-coupled isolation module with gate output terminal; Input end of clock of described double D trigger is connected with the second inverter output; Described the second phase inverter input end is connected with high speed photo coupling; Described the second light-coupled isolation module, high speed photo coupling all access MOSFET driver module, and described MOSFET driver module is connected with MOSFET.

Compared with prior art, the beneficial effect that the utility model has is: logic control element of the present utility model can substitute the relay of CRH2 EMUs, solved the noise that uses relay to bring and greatly, easily produced short problem of electromagnetic interference (EMI), serviceable life, reliability is high; Use conversion equipment, in the time that wherein one group of control circuit breaks down, can be switched to another group control circuit, guarantee CRH2 EMUs are normally worked.

Brief description of the drawings

Fig. 1 is the utility model one example structure block diagram;

Fig. 2 is the utility model one embodiment load module circuit theory diagrams;

Fig. 3 is the utility model one embodiment output module circuit theory diagrams.

Embodiment

As shown in Figure 1, the utility model one embodiment comprises two groups of control circuits (A group and B group) that structure is identical, every group of control circuit comprises n load module and n output module, described n the equal Access Control module of load module output terminal, described n output module input end is all connected with described control module; Described control module is connected with communication module, display alarm module, power module; Described power module provides power supply for described load module, communication module, output module, display alarm module; Between the control module of described two groups of control circuits, be connected to conversion equipment.

Control circuit need to have power module that the stabilized voltage supply of 5V and 24V is provided, and realizes the control of digital quantity.

Load module is for supplied with digital signal.For improving reliability, the antijamming capability of system, the control signal of relay is adopted to dual input path, and dual input adopts positive and negative two input compositions, to input fault is judged, can carry out A, B if there is fault and organize switching, simultaneously by the warnings such as emergency light and record trouble.Load module circuit theory diagrams are shown in Fig. 2.IN1 is 110V switching value input signal; DIN1 is the Transistor-Transistor Logic level signal of 5V.IN1 is the 110v switching value signal on locomotive, and input by R78, the pressure regulation of R79 resistance, by 4N35 light-coupled isolation, is output as low level signal after coming in, and by U37 phase inverter, is converted to the 5V Transistor-Transistor Logic level that control module can be identified.DIN1 exports to control module.

Output module provides amplification and the output of signal, by powerful MOSFET circuit formation, realize contactless output, and the output of every road is all with feedback and short-circuit protection function, to improve the reliability of system.If output abnormality detected, can carry out A, B and organize switching, report to the police and record with fault prompting pilot lamp simultaneously.Output module circuit theory diagrams are shown in Fig. 3.DOUT1 is the Transistor-Transistor Logic level signal of control module output; OUT1 is 110V output signal.After control module output DOUT1 signal, by U118 4N35 light-coupled isolation, make U22 IR21271 produce the driving voltage of M1 MOSFET, thereby produce OUT1 output signal.IR21271 has short-circuit protection function simultaneously, and by producing feedback signal LEDOE1 after U16 6N136 isolation, exports to control module.

When normal work, A group is in state of a control, and B group is in Status of Backups.B group is monitored A group duty, once A group breaks down, switch switches to B group state of a control (can manual switchover switch, also can utilize the action of Program-controled Conversion Switch) immediately, A group transfers listening state to simultaneously, reports fault demonstration, record simultaneously.

A, B organize switching condition:

1) any road input error or break down;

2) any road output fault (short-circuit protection, feedback error);

3) power module fault;

4) control module fault.

Display alarm module shows in real time, reports to the police failure message.The simultaneously details of record trouble, provide the download interface of recorded information.Failure message real-time demonstration on the pilot lamp of display panel, and the concrete meaning of each signal lamp is indicated on panel.Give full play to the advantage of logic control element, be beneficial to fault and look into and remove, and by the fault memory of system, can retrieve the reason that failure message analysis of failure occur.

Control module can adopt FPGA.

Communication module provides physical path for the communication between each parts.Communication module adopts high speed photo coupling and 485 chips, and the maximum data transfer rate can reach 1Mbps, and two-wire hot backup redundancy ability is provided simultaneously, ensures real-time and reliability.In topology, adopt bus type structure, medium distribution adopts token transmission as basic agreement.

Claims

1. the contactless logic control element of CRH2 EMUs, it is characterized in that, comprise two groups of control circuits that structure is identical, every group of control circuit comprises n load module and n output module, described n the equal Access Control module of load module output terminal, described n output module input end is all connected with described control module; Described control module is connected with communication module, display alarm module, power module; Described power module provides power supply for described load module, communication module, output module, display alarm module; Between the control module of described two groups of control circuits, be connected to conversion equipment; Described load module input end receives switching value input signal and the Transistor-Transistor Logic level signal of CRH2 type motor-car.

2. the contactless logic control element of CRH2 EMUs according to claim 1, is characterized in that, described load module comprises the voltage regulating module, the first light-coupled isolation module, the first phase inverter that connect successively.

3. the contactless logic control element of CRH2 EMUs according to claim 1, it is characterized in that, described output module comprises and door, is describedly connected with described control module with an input end of door, is describedly connected with an output terminal of another input end and double D trigger; Another output terminal of described double D trigger is connected with described control module; Describedly be connected with the second light-coupled isolation module with gate output terminal; Input end of clock of described double D trigger is connected with the second inverter output; Described the second phase inverter input end is connected with high speed photo coupling; Described the second light-coupled isolation module, high speed photo coupling all access MOSFET driver module, and described MOSFET driver module is connected with MOSFET.

4. according to the contactless logic control element of the CRH2 EMUs one of claim 1～3 Suo Shu, it is characterized in that, described conversion equipment is switch.