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泓格ET-7000在隧道监控Tunnel_Monitoring中的应用
由于空间不开放,照明缺乏,加上排烟散热效果差以及疏散困难,隧道总是交通事故最容易发生且伤害最严重的地方,因此隧道的安全俨然成为各国交通管理部门的重要课题。更糟的是,接踵而来的各种车辆中的驾驶员通常并不知道前方隧道发生了事故,因此后方的车辆一直往前挤入隧道,缺乏及时通报更是造成延迟救援及疏散的主因。为了减少隧道中交通事故的伤害及风险,尤其是那些长距离的隧道,安装一套能够提供实时监控的紧急通报系统绝对是必要的。 泓格科技推出的ET-7000系列I/O模块,提供了以太网络的及时、长距离数据传输功能,因此被使用在许多国家的交通控制系统中。在隧道中,每隔100米便安装一组配有ET-7000模块的紧急发报机,一旦事故发生,驾驶员只要按下发报机上的通报按钮,ET-7000模块便会收到信息并且立即通过以太网将紧急通报及事故地点发送给中控室。中控室可以通过网络人机接口监控隧道中的情况,并且也能够命令隧道中各个ET-7000打开发报机上的警铃。 ET-7000还有一项I/O Pair Connection功能,能够产生一对以太网之间DI与DO的联机。它可以让远程的DO模块读取本地ET-7000的DI讯号。在隧道外安装一个DO装置读取隧道内的信息,便可以在紧急事故发生时打开隧道口的警示灯,或者利用DO控制摄影机的转盘,让摄影机能够实时地拍摄现场画面。除此之外,在距离隧道最近的位置安装一个具有网络功能的PAC,紧急通报会通过中控室送到这个PAC,并由它通过RS-232将信息显示在LED显示器上,警告后方的驾驶员尽快离开高速公路,不要继续前进,以免影响救援与疏散的进行。
  1. 2010/1/2
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自动风筝Sky_liner
放飞风筝需要娴熟的技能,Festo公司凭借其“空中自动化风筝”首次证实运用机电学原理可以实现风筝全程自动化控制。这是其在运用流动气流核心技术上的新发展。 “空中自动风筝”包含两个分别用机电控制器操纵的双线风筝。运用伺服电机和人造风,这两个风筝就可以实现室内自动化操作。各风筝线通过快速开关阀连接到Festo公司生产的DMSP射流臂,它可以缩短风筝线的长度。如果风筝断线,通过射流臂收缩风筝线就可以使其平稳飞行。It takes a fair amount of skill to fly a kite. With its Sky_liner project, Festo has become the first company to demonstrate that fully automated control can be achieved with the aid of mechatronics, thus linking a new development to its core competency of automation using moving air. Sky_liner consists of two two-line kites, each of which is controlled using a mechatronic control unit. The two kites are operated automatically indoors, using servo motors and artificial wind. Each line is connected via fast-switching valves to a fluidic muscle DMSP from Festo, which shortens the line and counterbalances the kite by contracting when the kite breaks away. It takes a fair amount of skill to fly a kite. With its Sky_liner project, Festo has become the first company to demonstrate that fully automated control can be achieved with the aid of mechatronics, thus linking a new development to its core competency of automation using moving air. Sky_liner consists of two two-line kites, each of which is controlled using a mechatronic control unit. The two kites are operated automatically indoors, using servo motors and artificial wind. Each line is connected via fast-switching valves to a fluidic muscle DMSP from Festo, which shortens the line and counterbalances the kite by contracting when the kite breaks away.
  1. 2009/11/23
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气动机器人手臂Airics_arm
“气动机器人手臂”的灵感来源于自然界。结合机电一体化和人类仿生学模型,机器人手臂彰显了未来自动运动序列新的可行性。 “气动机器人手臂”由机器骨骼和机器肌肉组成。30块肌肉连接带动骨骼移动,包括尺骨、桡骨、掌骨和指骨以及肩关节和肩胛。这种连接技术目前还没有发明出来。 机器肌肉是Festo公司的一个产品,已经广泛应用于工业应用,叫做流体肌肉。这种技术使用了Festo公司的微型创新压力比例阀,让我们能够精确控制设计的力量和硬度。这些执行器与机电一体化系统和软件的技术水平同步。 扩展“气动机器人”的传感器系统也非常合理,就像开发后背、臀部和脖子部位一样,比如安装摄像头或者有感知能力的零件。这些扩展让机器人能够在更加危险的情况下工作发挥了重要作用。 Airics_arm is inspired by nature. Combining mechatronics and the model of human biology, the robotic arm shows new possibilities in automated motion sequences of the future. Airics_arm is equipped with artificial bones and muscles. 30 muscles move the bone structure comprising the ulna and radius, the metacarpal bones and the bones of the fingers as well as the shoulder joint and the shoulder blade; joints that are not found in the world of technology. The muscles are a product of Festo and are already widely used in industrial practice under the name of Fluidic Muscle. This technology, combined with very small and highly innovative piezo proportional valves from Festo, enable us to accurately control the designs forces and rigidity. These actuators are coordinated by state-of-the-art mechatronic systems and software. Extending the system of sensors of Airics_arm, e.g. with cameras or elements for tactile perception, is just as plausible as the development of a design for a back, hip and neck. These extensions will also play an important role in robotics as even more dangerous and hazardous situations in technology could be assigned to them.
  1. 2009/11/20
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空中鳐鱼Air_ray
以自然界的鳐鱼为模板的“空中鳐鱼”是一种由远程遥控的氦气气囊和羽翼振动产生驱动力组成的混合体。它轻便的设计借助氦气的浮力让它可以在广阔的空中“遨游”,这种方法与水中的鳐鱼相似。 “空中鳐鱼”的驱动力由羽翼振动产生。利用射线效应并基于与四周有连接的拱侧翼交替推拉运动的原理,私伺服控制的羽翼可以上下移动。当一侧受到压力时,它几何形的结构会自动向受力的反方向卷曲。一个伺服驱动两片侧翼交替地纵向移动,驱使羽翼上下运动。Air_ray, modelled on the manta ray, is a remote-controlled hybrid construction consisting of a helium-filled ballonet and a beating wing drive. Its lightweight design enables it to “swim” in the sea of air using the lift from the helium in a similar way to the manta ray in water. Propulsion is achieved by a beating wing drive. The servo drive-controlled wing, which can move up and down, utilises the Fin Ray Effect and is based on alternate pulling and pushing flanks connected via frames. When pressure is exerted on one edge, the geometrical structure automatically curves against the direction of the influencing force. A servo drive pulls the two flanks alternately in longitudinal direction, thus moving the wing up and down.
  1. 2009/11/17
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空中水母AirJelly
空中水母的环境是空气。与水下水母不同,远程控制的水母——空中水母不是在水中游,而是在广阔的空中滑翔,因为它有一个中央电机装置和一个智能听候指令的体系。它能够这样是因为它有一个充满氦气的球形网。 空中水母仅有的动力来源就是连接中央电动驱动器的两个锂离子电池。中央驱动器把动力传输到一个锥齿轮上,然后再传给八个连续的直齿轮,直齿轮通过曲柄带动水母上的八个“触角”。每个“触角”都设计成鱼鳍鳍条结构。把蠕动当做这个球形网的动力到目前为止在空军史上还是空白。空中水母是第一个以蠕动为驱动力的室内飞行物体。这种新型的驱动理念基于反弹原理的助推力,让水母轻轻地在空中穿行。 AirJellys environment is the air. Unlike AquaJelly, the remote-controlled jellyfish AirJelly does not swim through water, but instead glides instead through a sea of air thanks to its central electric drive unit and an intelligent, adaptive mechanism. It is able to do so because it consists of a helium-filled ballonett. AirJellys sole source of power is two lithium-ion polymer batteries connected to the central electric drive unit. It transmits the force to a bevel gear and from there to a succession of eight spur gears, which move the eight tentacles of the jellyfish via cranks. Each tentacle is designed as a structure with Fin Ray Effect . Propulsion of a ballonett by means of peristaltic motion is hitherto unknown in the history of aviation. AirJelly is the first indoor flight object with peristaltic drive. This new drive concept, with propulsion based on the principle of recoil, moves the jellyfish gently through the air.
  1. 2009/11/6
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计算机网络体系结构-计算机网络基础(3-4)
OSI参考模型,OSI (Open System Interconnection) 参考模型 1983年ISO 的 OSI 模型正式成为国际标准。 Fig. 1-16, Fig. 1-17 1. 物理层(The Physical Layer) 在物理线路上传输原始的二进制数据位(基本网络硬件)。 2. 数据链路层(The Data Link Layer) 在有差错的物理线路上提供无差错的数据传输(Frame)。 3. 网络层(The Network Layer) 控制通信子网提供源点到目的点的数据传送(Packet)。 4. 运输层(The Transport Layer) 为用户提供端到端的数据传送服务。 5. 会话层(The Session Layer) 为用户提供会话控制服务(安全认证)。token management and synchronization (insert checkpoints into the data stream) 6. 表示层(The Presentation Layer) 为用户提供数据转换和表示服务。 7. 应用层(The Application Layer)
  1. 2009/10/23
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水下企鹅AquaPenguins_Festo仿生技术
水下企鹅- 技术-水下自动运载工具AquaPenguins - technology-bearers as autonomous underwater vehicle.与它自然界的原型一样,来自费斯托(Festo)公司的水下企鹅具有一个带水动力的身体轮廓。其优雅的推进力以及其可向各个方向移动的机翼头部和尾部,让机器人企鹅可以在狭窄的空间条件下自由穿行,并且在必要时及时出现甚至可以向后游——这一点可不像它们的自然界的原型。 仿生企鹅设计成水下自动运载工具,可以自由定位并且可在水池中穿行。这种工具有一个3D的海豚音声纳系统,使得“企鹅”可以与周围的伙伴们交流,比如避免互相碰撞。Like its natural archetype, the AquaPenguin from Festo has a hydrodynamic body contour. Its elegant wing propulsion and its head and tail sections, which can be moved in all directions, allow the robotic penguins to manoeuvre in cramped spatial conditions, to turn on the spot when necessary and – unlike their biological counterparts – even to swim backwards. The bionic Penguins are designed as autonomous underwater vehicles that independently orient themselves and navigate through the water basin. They are supported by a 3D sonar system which, as with dolphins, allows communication with their surroundings and with other robotic penguins – for example to avoid collisions.
  1. 2009/10/22
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计算机网络体系结构-计算机网络体系结构(第二讲)
ISO 7498信息处理系统--开放系统互连--基本参考模型(ISO 7498,Information Processing Systems--Open Systems Interconnection--Basic references model)是OSI 标准中最基本的一个,它从OSI 体系结构方面规定了开放系统在分层、相应层对等实体的通信、标识符、服务访问点、数据单元、层操作、OSI管理等方面的基本元素、组成和功能等,并从逻辑上把每个开放系统划分为功能上相对独立的七个有序的子系统。所有互连的开放系统中,对应的各子系统结合起来构成开放系统互连基本参考模型中的一层。这样,OSI 体系结构就由如左示功能上相对独立的七个层次组成。各层功能简介:  第一层: 物理层PH (Physical)  第二层: 数据链路层DL(Data-link)  第三层: 网络层N (Network)  第四层: 运输层T (Transport)  第五层: 会话层S (Session)  第六层: 表示层P (Presentation)  第七层: 应用层A (Application)查看文字讲义
  1. 2009/8/19
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贝加莱:一个值得信赖的伙伴
贝加莱(B&R)是一家自动化技术领域的全球性领导厂商,总部位于奥地利Eggelsberg,于1979年由Erwin Bernecker先生和Josef Rainer先生共同创建。创新的信念伴随贝加莱不断成长,并引领技术发展的潮流。今天的贝加莱已经在全球55个国家设立了分支机构,拥有140个办事处。
  1. 2007/12/11
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