 |
Family of communication devices
The family of communication devices (generation 1996) - SUS is intended for use in fault-tolerant control systems for space objects of various classes, including objects with a long period of active existence
Part number:
Description
The family of communication devices (generation 1996) - SUS is intended for use in fault-tolerant control systems for space objects of various classes, including objects with a long period of active existence
PROVIDER:
JSC "CONCERN OF RADIO ENGINEERING" VEGA"
DESCRIPTION
When integrating systems of space objects based on information and computer networks, not all connected devices meet the requirements of network protocols.
Communication devices included in the family provide adaptation of various terminal devices (sensors, activators, etc.) with specific interfaces and redundancy methods (instrument interface) to work in the network.
The family includes both independent devices that perform the functions of processing, switching messages, negotiation of network protocols, and electronic units that are embedded in the equipment of terminal devices and perform the functions of primary information conversion. The nomenclature of the family can be supplemented with new devices that provide the necessary completeness for the implementation of specific projects.
The structure of the family devices
A typical communication device consists of a processing section, a power supply section, and sections of communication modules.
The processing section is designed for managing communication modules, implementing higher-level exchange protocols, pre-processing information, as well as for interacting with service interfaces and local network subscribers.
Sections of communication modules are intended for implementation of protocols of functioning of channels of the instrument interface on physical and channel levels. The communication module section is programmatically controlled by the processing section processor and interacts with it via the IC interface.
The power supply section is designed to convert the primary voltage 27 B to the output voltage of the secondary power supply channel.
Communication with the instruments of the space object is carried out via the instrument interface channel, and with other computer systems - via the multiplex exchange channel of the MCO.
Telemetry channel TM and technological channel TC provide control of the state and operation of communication devices.
The DC diagnostic channel is used for Troubleshooting and debugging the communication device software.
The power connection is via a power - cap, and the channel of the COI provides supply secondary power to the elements of the communication device.
The interface of the interface modules-IC is an internal interface and is intended for exchange between the communication modules and the processor of the processing section.
The cs synchronization channel and the CC communication channel are used for synchronization and interconnection of computing processes between communication devices combined in a fault-tolerant structure
Application development technology
The design and debugging of the communication device software is performed at the automated workplace of the ARMP186 programmer. Programming is performed in the programming languages “C"and Assembler. Together with the communication devices, a set of functional module drivers is supplied, which implements functions similar to the BIOS. ARMP186 supports all stages of software debugging, starting from the stage of text specification of the project and ending with complex dynamic debugging in real time of a multi-machine complex.
The ARMP186 instruments can be operated in conjunction with the imitators of the IVS spacecraft instruments. The operation of imitators IVS in accordance with the specified algorithm provides a remote computer. The set of devices ARMP186, IVS, PC and communication devices form a complex of debugging programs KOP.
ARMP186 provides:
specification of a software project;
technical administration of a software project, including management of access rights to software modules;
Autonomous debugging of software modules in a cross system with emulation of the processor's computing core;
symbolic debugging of software;
tracing of program execution in real time with the depth of the track up to 1Mb;
dynamic output of information about user variables in digital form, as well as in the form of histograms and graphs;
the analysis of the collected route program execution through the user query composed in terms of programs;
debugging of two-machine complexes.
IVS provides simulation of external links of the instrument interface of communication devices.
The PC ensures the operation of the IVS in accordance with the software model of the space object.
Fault-tolerance
There are mechanisms and tools for building fault-tolerant structures with hardware and time redundancy. The pre-limit state is determined by the serviceability of one complete set of communication modules, which can belong to different redundancy channels, which allows for many independent failures.
Correction codes and procedures for restoring the computational process using a synchronization and communication channel are used to ensure noise immunity when exposed to solar flares and cosmic radiation. The presence of a watchdog timer allows you to avoid "hanging" programs.
The structure of the communication modules provides various options for the organization of redundancy in the communication channels.
Without dressing
The reserved instruments of the spacecraft are connected each to a” different " communication device.
With dressing at the entrance
The spacecraft's redundant instruments are connected to all communications devices. The “current” communication device is selected by the device.
With a dressing on the way out
The spacecraft's redundant instruments are connected to all communications devices. The “current” communication device is selected by the communication device.
The principle of building a family
The US family is a set of devices built on the basis of the basic load-bearing structure (BNK-96) using the modules of the basic set, which includes core modules.
The processing and power section modules are used as the core. The basic set of modules can be expanded if necessary. US configurations are defined by TK and are limited by BNC capabilities. The applied principle of unification allows to reduce the amount of work on the development of US and ensures the quality of design, and the delivery of the first samples in 18 months. The production cycle of the next batch of samples does not exceed 14 weeks
The basis of the RMC is the control panel of the PCG readiness.
The PCG consists of imitators of instruments of the space object IVS, means of indication and control of control modes.
Imitators IVS operate under the control of the communication device itself. IVS management directives and results are transmitted over the serial technological channel of the TC.
The RMC may also include standard measuring devices for measuring the parameters of external signals of the communication device.
The KK switching box allows to reduce the volume of IVS equipment by using symmetrical channels of the PI instrument interface.
The PKG corresponds to the performance group 1.1, the type of climatic performance-UHL.
Design
The basic load-bearing structure of the BNK96 provides for a "package" layout scheme using spring connectors with zero joint force as an element for connecting electric circuits.
The elements of this package are functional modules. Switching cells with external connectors installed on them divide the packet into sections. Each section consists of one switching cell and two to six functional module cells. In total, the package includes up to 20 cells.
The studded package is mounted on the base that secures the communication device. Package partitioning allows up to 160 circuits per section to be output to external connectors.
PROVIDER:
JSC "CONCERN OF RADIO ENGINEERING" VEGA"
DESCRIPTION
When integrating systems of space objects based on information and computer networks, not all connected devices meet the requirements of network protocols.
Communication devices included in the family provide adaptation of various terminal devices (sensors, activators, etc.) with specific interfaces and redundancy methods (instrument interface) to work in the network.
The family includes both independent devices that perform the functions of processing, switching messages, negotiation of network protocols, and electronic units that are embedded in the equipment of terminal devices and perform the functions of primary information conversion. The nomenclature of the family can be supplemented with new devices that provide the necessary completeness for the implementation of specific projects.
The structure of the family devices
A typical communication device consists of a processing section, a power supply section, and sections of communication modules.
The processing section is designed for managing communication modules, implementing higher-level exchange protocols, pre-processing information, as well as for interacting with service interfaces and local network subscribers.
Sections of communication modules are intended for implementation of protocols of functioning of channels of the instrument interface on physical and channel levels. The communication module section is programmatically controlled by the processing section processor and interacts with it via the IC interface.
The power supply section is designed to convert the primary voltage 27 B to the output voltage of the secondary power supply channel.
Communication with the instruments of the space object is carried out via the instrument interface channel, and with other computer systems - via the multiplex exchange channel of the MCO.
Telemetry channel TM and technological channel TC provide control of the state and operation of communication devices.
The DC diagnostic channel is used for Troubleshooting and debugging the communication device software.
The power connection is via a power - cap, and the channel of the COI provides supply secondary power to the elements of the communication device.
The interface of the interface modules-IC is an internal interface and is intended for exchange between the communication modules and the processor of the processing section.
The cs synchronization channel and the CC communication channel are used for synchronization and interconnection of computing processes between communication devices combined in a fault-tolerant structure
Application development technology
The design and debugging of the communication device software is performed at the automated workplace of the ARMP186 programmer. Programming is performed in the programming languages “C"and Assembler. Together with the communication devices, a set of functional module drivers is supplied, which implements functions similar to the BIOS. ARMP186 supports all stages of software debugging, starting from the stage of text specification of the project and ending with complex dynamic debugging in real time of a multi-machine complex.
The ARMP186 instruments can be operated in conjunction with the imitators of the IVS spacecraft instruments. The operation of imitators IVS in accordance with the specified algorithm provides a remote computer. The set of devices ARMP186, IVS, PC and communication devices form a complex of debugging programs KOP.
ARMP186 provides:
specification of a software project;
technical administration of a software project, including management of access rights to software modules;
Autonomous debugging of software modules in a cross system with emulation of the processor's computing core;
symbolic debugging of software;
tracing of program execution in real time with the depth of the track up to 1Mb;
dynamic output of information about user variables in digital form, as well as in the form of histograms and graphs;
the analysis of the collected route program execution through the user query composed in terms of programs;
debugging of two-machine complexes.
IVS provides simulation of external links of the instrument interface of communication devices.
The PC ensures the operation of the IVS in accordance with the software model of the space object.
Fault-tolerance
There are mechanisms and tools for building fault-tolerant structures with hardware and time redundancy. The pre-limit state is determined by the serviceability of one complete set of communication modules, which can belong to different redundancy channels, which allows for many independent failures.
Correction codes and procedures for restoring the computational process using a synchronization and communication channel are used to ensure noise immunity when exposed to solar flares and cosmic radiation. The presence of a watchdog timer allows you to avoid "hanging" programs.
The structure of the communication modules provides various options for the organization of redundancy in the communication channels.
Without dressing
The reserved instruments of the spacecraft are connected each to a” different " communication device.
With dressing at the entrance
The spacecraft's redundant instruments are connected to all communications devices. The “current” communication device is selected by the device.
With a dressing on the way out
The spacecraft's redundant instruments are connected to all communications devices. The “current” communication device is selected by the communication device.
The principle of building a family
The US family is a set of devices built on the basis of the basic load-bearing structure (BNK-96) using the modules of the basic set, which includes core modules.
The processing and power section modules are used as the core. The basic set of modules can be expanded if necessary. US configurations are defined by TK and are limited by BNC capabilities. The applied principle of unification allows to reduce the amount of work on the development of US and ensures the quality of design, and the delivery of the first samples in 18 months. The production cycle of the next batch of samples does not exceed 14 weeks
The basis of the RMC is the control panel of the PCG readiness.
The PCG consists of imitators of instruments of the space object IVS, means of indication and control of control modes.
Imitators IVS operate under the control of the communication device itself. IVS management directives and results are transmitted over the serial technological channel of the TC.
The RMC may also include standard measuring devices for measuring the parameters of external signals of the communication device.
The KK switching box allows to reduce the volume of IVS equipment by using symmetrical channels of the PI instrument interface.
The PKG corresponds to the performance group 1.1, the type of climatic performance-UHL.
Design
The basic load-bearing structure of the BNK96 provides for a "package" layout scheme using spring connectors with zero joint force as an element for connecting electric circuits.
The elements of this package are functional modules. Switching cells with external connectors installed on them divide the packet into sections. Each section consists of one switching cell and two to six functional module cells. In total, the package includes up to 20 cells.
The studded package is mounted on the base that secures the communication device. Package partitioning allows up to 160 circuits per section to be output to external connectors.