CN203299575U

CN203299575U - Double-redundancy control signal communication display controller

Info

Publication number: CN203299575U
Application number: CN2013202804376U
Authority: CN
Inventors: 宋丽君; 侯学智; 黄丽芬
Original assignee: SHANGHAI KASUO AVIATION TECHNOLOGY Co Ltd
Current assignee: SHANGHAI KASUO AVIATION TECHNOLOGY Co Ltd
Priority date: 2013-05-21
Filing date: 2013-05-21
Publication date: 2013-11-20
Anticipated expiration: 2023-05-21

Abstract

A double-redundancy control signal communication display controller comprises a main control board and a power panel. The main control board adopts a control unit module (CPLD) to process data communication. An ETX module serves as a display processing unit. By adopting the CPLD to process data communication and the ETX module to perform processing display and maintenance functions, the controller can guarantee normal communication functions of a system in a bad power supply environment. Two CAN buses both adopt a double-redundancy design. The system reliability is increased. The controller further accords with the high reliability of ship-based equipment and airborne equipment. Isolation devices are added between CAN controllers and CAN drive modules. The system reliability and anti-interference capabilities are further improved. A solid-state disc can store great amounts of control data. Later maintenance is facilitated. The controller can be used in ship-based equipment and airborne equipment in ship systems and aviation systems for communication control.

Description

A kind of pair of remaining control signal communication display controller

Technical field:

The utility model relates to a kind of control signal communication display controller.This controller can be used for carrier-borne, the airborne equipment Control on Communication of naval vessel, air line.

Background technology:

The main manipulation control signal on naval vessel comprises discrete magnitude, analog quantity and CAN bus signals at present, and the communication display controller need to realize that these signals are sent in to display to be shown, sends to other equipment simultaneously.Existing experimental program is that signal forwards and Presentation Function is realized by PC104, and this scheme shortcoming is on naval vessel during voltage instability, and the PC104 outage, cause that communication function interrupts.

Summary of the invention:

The purpose of this utility model is to provide a kind of pair of remaining control signal communication display controller, when by CPLD, adding ETX and realize voltage instability, the signal forwarding capability still can be realized by CPLD, the ETX module is compared PC104 simultaneously, realized Core Feature, simplified redundancy function, so systemic-function is more stable.

In order to solve the existing problem of background technology, the utility model is by the following technical solutions: a kind of pair of remaining control signal communication display controller comprises master control borad and power panel, wherein: master control borad adopts control module module (CPLD) handle data communication, and the ETX module is as display processing unit.

Wherein, described master control borad also comprises two-way CAN bus; Described master control borad also comprises solid-state disk; Described master control borad also comprises standard interface and non-standard expansion module; Described plate power supply comprises input processing module and power panel supply module; Described CAN bus comprises that CAN controller, isolating device and CAN drive, and wherein isolating device is between CAN controller and CAN driving; Described standard interface mainly comprises VGA, keyboard, mouse, USB and Ethernet, and described non-standard expansion module comprises control module module (CPLD), discrete magnitude acquisition module, discrete magnitude generation module, analogue collection module, analog quantity generation module, CAN bus module and external sync clock module.

The beneficial effects of the utility model are: the CPLD handle data communication, and the functions such as ETX processes and displays and maintenance, under severe power environment, can guarantee that the system communication function is normal; Two-way CAN bus is all two redundancy designs, has increased system reliability, meets high reliability carrier-borne, airborne equipment; At CAN controller CAN driver module, increased isolating device, system reliability and antijamming capability are provided; Solid-state disk can be stored a large amount of control data, is convenient to later maintenance.

The accompanying drawing explanation:

Fig. 1 is the circuit theory diagrams of product master control borad.

Fig. 2 is the circuit theory diagrams of product power panel.

Fig. 3 is CAN control module circuit diagram.

Fig. 4 is CAN transceiver module circuit diagram.

Fig. 5 is discrete magnitude acquisition module circuit diagram.

Fig. 6 is discrete magnitude output module circuit diagram.

Fig. 7 is the analog input module circuit diagram.

Fig. 8 is the circuit diagram of analog output module.

Fig. 9 is the circuit diagram of power supply input processing module.

Embodiment:

The data message that ET module 1 shown in Figure 1 is processed from other modules of feature board, comprising: the analog quantity to input is sampled, and the information of CAN module input is resolved, and by the I/O mouth, controls the measures of dispersion certificate, output CAN data and analog quantity information.And provide standard interface mainly to comprise the multiple computer standard interfaces such as CF card, VGA, USB, serial ports 1 and serial ports 2, mouse, keyboard.

CAN bus module main circuit will comprise: the compositions such as CPLD7, controller 14, bus transceiver 16, isolator 15.In order to reduce the electrical damage of the transceiver that a variety of causes causes, adopt the redundancy of CAN communication network.In circuit, adopt SJA1000 controller that Philips company produces and with its supporting TJA1050 transceiver, carry out CAN and communicate by letter, and select the bus medium according to CAN bus physical layer protocol, the designing wiring scheme, connect into the CAN network.

CAN bus control circuit shown in Figure 3.CAN communication controler SJA1000 is the core of CAN bus interface circuit, by it, realizes the data communication between host computer and on-the-spot microprocessor, and supports the CAN2.0B agreement fully.SJA1000 mainly completes the communication protocol of CAN, and the major function of CAN bus transceiver is to increase communication distance, improves the moment antijamming capability of system, and the protection bus, reduce Radio frequency interference (RFI) (RFI), realizes thermal protection etc.Wherein SJA1000 receives the data from ETX by the multiplexing pin of AD address date by isa bus, by built-in CAN controller, data-switching is become to the CAN signal.The JS164245 digit chip is for completing the level conversion of SJA1000 chip and CPLD chip chamber, and the CPLD chip is communicated by letter with isa bus and simulates the control sequential of SJA1000 for the CAN bus.

Figure 4 shows that the CAN transceiver circuit.TJA1050 is the interface between CAN controller and physical bus, and the differential sending and receiving ability to bus can be provided, and is fully compatible with the IS011898 standard, and has the ability of anti-instantaneous interference, protection bus.For reliability and the antijamming capability that improves system, between CAN controller and CAN transceiver, adopt optocoupler 6N137 to isolate.

Fig. 5, Figure 6 shows that discrete magnitude collection, circuit for generating.JS164245 is on the one hand for level conversion, and optocoupler TLP627 is for electrical isolation.The withstand voltage V of collector-emitter of TLP627 _CEO=300V, maximum output circuit I _C=150mA, meet output and drive requirement.

Fig. 7, Figure 8 shows that analog acquisition collection, circuit for generating.Adopt the AD620 differential amplifier to carry out data acquisition, and carry out analog to digital conversion by the ADS8568 device of 16, guarantee sampling precision.

Product function power supply module is chosen the product of VPT company, and input voltage is that 15V～40V meets the product power requirement.The DC/DC power supply turns utensil high reliability, has good electromagnetic compatibility characteristic and high noise immunity, and volume is little and can realize high-efficiency operation, and can work in-55 ℃～+ 125 ℃ scopes.The basic switch frequency of the power supply changeover device of DV series is higher than 300kHz, interior noiseless source, and input voltage range, in the 24V left and right, meets design requirement.Output current, all greater than output-current rating, meets design requirement.

Figure 9 shows that input processing circuit.This module is processed input power on machine, and contents processing mainly comprises several parts such as lightning protection, Fang Jianfeng, surge, counnter attack, filtering.

Claims

1. two remaining control signals communication display controller, it is characterized in that: described controller comprises master control borad and power panel, wherein:

Master control borad adopts control module module (CPLD) handle data communication, and the ETX module is as display processing unit.

2. controller according to claim 1, it is characterized in that: described master control borad also comprises two-way CAN bus.

3. controller according to claim 1, it is characterized in that: described master control borad also comprises solid-state disk.

4. controller according to claim 1, it is characterized in that: described master control borad also comprises standard interface and non-standard expansion module.

5. controller according to claim 1, it is characterized in that: described power panel comprises input processing module and power panel supply module.

6. controller according to claim 2 is characterized in that: described CAN bus comprises that CAN controller, isolating device and CAN drive, and wherein isolating device is between CAN controller and CAN drive.

7. controller according to claim 4, it is characterized in that: described standard interface mainly comprises VGA, keyboard, mouse, USB and Ethernet, and described non-standard expansion module comprises control module module (CPLD), discrete magnitude acquisition module, discrete magnitude generation module, analogue collection module, analog quantity generation module, CAN bus module and external sync clock module.