-
針對當前安檢力學試驗機所能完成的試驗種類單一、自動化程度低等問題，提出一種以ATmega128單片機為核心控制器的安檢力學試驗機的設計。詳細闡述了該安檢力學試驗機各個組成部分的設計原理和方案，并且給出了各部分的軟件設計思想和操作流程。經(jīng)過大量測試試驗表明：設計的安檢力學試驗機可以完成多達十余種的力學安檢試驗，完全符合相關(guān)國家標準，并且具有數(shù)據(jù)采集精度高、傳輸速度快、操作安全簡便等特點，實現(xiàn)了安檢設備的多功能化、數(shù)字化和自動化。
Abstract:
Currently， many mechanical security testing machines have only one function. The degree of automation of them is low. To solve those problems， a new kind of mechanical security testing machine， using ATmega128 micro-controller as its core controller， has been advanced. It describes the components of the machine. The principles and the scheme in the designing processes are presented in detail， and the software architecture and the operation processes of each part are given. After having done many testing， we have reached the following conclusions: the mechanical security testing machine presented can do over ten mechanical security tests complying with related national standards. It has high data acquisition accuracy and high transmission speed. The operation of the machine is simple and safe. In general， this machine is a multi-functional， highly automatic， digitalized security testing device.
標簽：
ATmega
128
安檢
試驗機
上傳時間：
2013-11-05
上傳用戶：a67818601
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This white paper discusses how market trends, the need for increased productivity, and new legislation have
accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is
changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to
market. This allows FPGA users to design their own customized safety controllers and provides a significant
competitive advantage over traditional microcontroller or ASIC-based designs.
Introduction
The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in
cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas
around machines such as fast-moving robots, and distributed control systems in process automation equipment such
as those used in petrochemical plants.
The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of
electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing
safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was
developed in the mid-1980s and has been revised several times to cover the technical advances in various industries.
In addition, derivative standards have been developed for specific markets and applications that prescribe the
particular requirements on functional safety systems in these industry applications. Example applications include
process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC
62304), automotive (ISO 26262), power generation, distribution, and transportation.
圖Figure 1. Local safety System
標簽：
FPGA
安全系統(tǒng)
上傳時間：
2013-11-05
上傳用戶：維子哥哥
-
This white paper discusses how market trends, the need for increased productivity, and new legislation have
accelerated the use of safety systems in industrial machinery. This TÜV-qualified FPGA design methodology is
changing the paradigms of safety designs and will greatly reduce development effort, system complexity, and time to
market. This allows FPGA users to design their own customized safety controllers and provides a significant
competitive advantage over traditional microcontroller or ASIC-based designs.
Introduction
The basic motivation of deploying functional safety systems is to ensure safe operation as well as safe behavior in
cases of failure. Examples of functional safety systems include train brakes, proximity sensors for hazardous areas
around machines such as fast-moving robots, and distributed control systems in process automation equipment such
as those used in petrochemical plants.
The International Electrotechnical Commission’s standard, IEC 61508: “Functional safety of
electrical/electronic/programmable electronic safety-related systems,” is understood as the standard for designing
safety systems for electrical, electronic, and programmable electronic (E/E/PE) equipment. This standard was
developed in the mid-1980s and has been revised several times to cover the technical advances in various industries.
In addition, derivative standards have been developed for specific markets and applications that prescribe the
particular requirements on functional safety systems in these industry applications. Example applications include
process automation (IEC 61511), machine automation (IEC 62061), transportation (railway EN 50128), medical (IEC
62304), automotive (ISO 26262), power generation, distribution, and transportation.
圖Figure 1. Local safety System
標簽：
FPGA
安全系統(tǒng)
上傳時間：
2013-11-14
上傳用戶：zoudejile
-
One of the strengths of Synplify is the Finite State Machine compiler. This is a powerfulfeature that not only has the ability to automatically detect state machines in the sourcecode, and implement them with either sequential, gray, or one-hot encoding. But alsoperform a reachability analysis to determine all the states that could possibly bereached, and optimize away all states and transition logic that can not be reached.Thus, producing a highly optimal final implementation of the state machine.
標簽：
Synplicity
Machine
Verilog
Design
上傳時間：
2013-10-20
上傳用戶：蒼山觀海
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Finite state machines are widely used in digital circuit designs. Generally, when designing a state machine using an HDL, the synthesis tools will optimize away all states that cannot be reached and generate a highly optimized circuit. Sometimes, however, the optimization is not acceptable. For example, if the circuit powers up in an invalid state, or the circuit is in an extreme working environment and a glitch sends it into an undesired state, the circuit may never get back to its normal operating condition.
標簽：
Creating
Machines
Mentor
State
上傳時間：
2013-11-02
上傳用戶：xauthu
-
Anthill是一個確保受控建造過程和促進在組織內(nèi)部共享知識的工具。Anthill在每一次建造之前從項目最新版本的源文件庫中借出文件，并在每一次建造之后用一個唯一的版本號標記源文件庫。它支持的庫適配器有：CVS (Concurrent Versions System), Visual Source safe, Perforce, PVCS, StarTeam, MKSIntegrity, 和 FileSystem. 來源：http://freshmeat.net/projects/ant8/?topic_id=45%2C822%2C52%2C46%2C861
標簽：
Anthill
過程
版本
項目
上傳時間：
2014-02-08
上傳用戶：水口鴻勝電器
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This module defines safer C library string * * routine replacements. These are meant to make C * * a bit more safe in reference to security and * * robustness
標簽：
replacements
defines
library
routine
上傳時間：
2014-01-04
上傳用戶：佳期如夢
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Structure the sources so that the compression and decompression code
form a library usable by any program, and write both gzip and zip on
top of this library. This would ideally be a reentrant (thread safe)
library, but this would degrade performance. In the meantime, you can
look at the sample program zread.c.
標簽：
decompression
compression
Structure
the
上傳時間：
2015-08-06
上傳用戶：jackgao
-
Secure Programming Cookbook for C and C++ is an important new resource for developers serious about writing secure code for Unix(including Linux) and Windows environments. This essential code companion covers a wide range of topics, including safe initialization, access control, input validation, symmetric and public key cryptography, cryptographic hashes and MACs, authentication and key exchange, PKI, random numbers, and anti-tampering.
標簽：
Programming
developers
for
important
上傳時間：
2015-09-03
上傳用戶：gundan
-
Contains source to demonstrate how to copy/delete files and folders with HFS+ APIs. It also demonstrates a technique to rename an object if an object of the same name exists in the destination.
This sample shows how to perform these operations in an MP-safe way.
標簽：
demonstrate
Contains
demonstr
folders
上傳時間：
2016-01-14
上傳用戶：我們的船長
