图2-1给出了交流电动机电源切换的示意图，变频调速器的输出三相电源UV及电网电源US分别经自动转换开关ATS给电动机M供电。起动程序是：变频调速器按预先设定的升频及升压方式，通过ATS开关给电动机逐步由零升压及升频，并网控制器实时监测UV及US的频差、压差及相角差. PID(Proportional Integral Derivative比例微分积分)控制是控制工程中技术成熟，应用广泛的一种控制策略，它经过长期工程实践，已形成了一套完整的控制方法和典型的结构。PID控制器结构简单、稳定性好、工作可靠、调整方便。当被控对象的结构和参数不能完全被掌握，或得不到精确的数学模型时，控制理论的其它技术难以采用，系统控制器的结构和参数必须依靠经验和现场调试来确定，这时应用PID控制技术最为方便。因此当我们不能完全了解一个系统和被控对象，或不能通过有效的测量手段来获得系统参数时，就是PID的用武之地（图1）。3258J/2H3P 软件方面，Linux下的自由软件GNU gcc可以完成几乎所有知名CPU以及DSP的交叉C编译和调试，故IDE可以省去。至于操作系统，uClinux、RTLinux、μC/OS等源码开放的、免费的嵌入式操作系统也都性能稳定可靠。因此，全部使用自由软件开发嵌入式应用无疑是一种不错的选择。我们在32位MCU ColdFire上实现了上述全部开发过程。这一过程原则上也适合其它几乎所有的32位嵌入式应用系统的开发。作为范例，我们会将详细的开发步骤在本刊的《学习园地》栏目中陆续刊登若干篇文章介绍给读者，供嵌入式应用开发工程师们学习参考。提倡使用自由软件开发嵌入式系统自由软件有强大的网上技术支持是公认的，不断升级的新版本的推出表明了自由软件强大的生命力。

远程联网功能,通过ADSL、Cable Modem、以太网接入等宽带接入，所监控厂房可以自动发送该厂房的环境参数到监控主机上，由此，监控人员可以随地随时了解所监控厂房的情况；采用专用的程序来开发实现，确保系统的安全稳定性。这种方式简单可靠效果好，成本很低，仅是中心服务器需要一个公网静态IP地址；TFB0912UHE 触摸屏控制电路的硬件结构，触摸屏控制电路主要有一下四部分组成：进行数据处理、控制功能的MCU，一个四线电阻式触摸屏和控制芯片ADS7846, 以及显示触摸点坐标的显示部分。在这里主要对触摸屏的硬件电路和驱动设计做一个较详细的介绍，ADS7846是美国TI公司推出的一款四线制电阻式触摸屏控制器，通过机械式触摸，可以迅速得到触摸点位置信号。

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数字中继和模拟中继相当于普通交换机的中继线，而内线通道则相当于普通交换机的内线分机。软交换机具有以下功能，内线分机之间相互呼叫，内线拨外线，内线拨外线号码限制：通过限制被叫的字头来屏蔽某些电话号码。如：限制呼叫长途、国际长途、信息台等。出中继分组：内线呼叫外线可以选择某个出中继组呼出。 安全是居民生活中的大事，此系统不但有效控制了外来人员的随意出入，在软件中还可以清楚的记录何人、何时使用哪部电梯到达哪个楼层，为发生和避免治安案件或其它事件提供线索，降低发案率，使居民安全更有保障。比如：非法分子想去十楼，即便进入了电梯也无法操作，如果碰巧和某业主一起上，也不清楚到几层，如果和业主去十五层，非法分子也下来，那么他就无法操作下行的电梯，现在人们为了安全，如果不认识又没有刷卡的情况下，更不可能让他与自己同时乘梯。 国内外的资料表明，使用变频设备可使水泵运行平均转速比工频转速降低20%，从而大大降低能耗，节能效率可达20%～40%。节约了电费、降低了生产成本、减少了启动时对电网的冲击，改善了工作环境，并易于实现自动化，同时可根据生产工艺的要求控制的更准确、更快速。SY6000 系列变频器是上海山宇公司采用矢量控制技术、结合诸多先进的生产制造工艺推出的高性能变频器，它优越的速度控制和转矩控制特性、完整的保护功能以及灵活的编程能力， 在工业现场被广泛的应用。下面对SY6000系列 变频器在恒压供水中的应用作一下介绍。TFB0912UHE 当断丝或引丝 状态时，由于脉冲信号f小于f1值，图四的信号输入端为低电平，探丝器输出信号；当触摸延时感应端时，ic 1d的14脚输出高电平，对c8进行快速充电，输出截止。延时时间由c8及r24决定。通过这个触摸延时，可以进行伸头引丝操作。过流保护电路由ic 1c及r 27组成， r27可以限制峰值电流，同时将过流信号反馈至ic 1a的10脚，使输出快速截止。d5起续流作用，可以防止感性负载通断时损坏电路。

109L1448MB505 积分动作触发时机为温度先由上升至反转下降的时候，在加热开始时，原本温度即会产生超调的现象，若是该时刻再增加积分量，那么温度也就超过得更多了。因此当启动积分动作时，Ti值愈小积分量愈大，反之，Ti值愈大则计算的积分量则愈小。因此出厂的I默认值为260，是为避免积分量太大造成加热温度过高。TFB0912UHE 因为美国和欧洲采用了两种不同的排放法规体系，所以第二代车载诊断系统有OBDⅡ、EOBD两种形式。美国实施OBDⅡ，而采用欧洲排放法规的则实施EOBD系统。从根源上来说，美国的OBDⅡ系统实施得更早，标准更严格。美国环保局规定1996年以后生产的轿车和轻型卡车（载重在6.5t以下）的电控系统都要求配置OBDⅡ系统，并在2000年1月1日开始所有汽车制造商生产的轿车及轻型卡车都必须配置OBDⅡ系统。

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A860-0346-T241无机房限速器开关XS1-23XS1-24无机房电梯开关XS1-26XS1-25PE2A050AMDBP0A

A20B-8200-0543 L 57322055 A 32119081 - m Hitachi step treads Lilong step framesP30B06020DXV20

A06B-6079-H307Xinda door lock Xinda cargo ladder door lock Xinda hook lock PB 152A cargo ladder door lock medical ladder hook lockP30B06020DXS50

A860-0346-T141 Thyssen roller guide shoe roller Thyssen elevator roller guide shoe wheel Dawson 9814029 n guide shoe wheelR7M-A20030-B

A06B-6059-H003蒂森电梯门滑块蒂森电梯门导靴电梯配件蒂森门导靴蒂森门滑块S82J-15024D

A66L-2050-0025#AOtis Step Frame LDTJ - B - 14 Lilong Step Frame H 2106224 LDTJ - A - 16B TreadS3D2-CCD

A06B-0032-B075#0080迅达扶梯抱闸电机MBS54-10迅达扶梯制动器迅达抱闸欣达制动器MPT002-G4P-V1

6MBP50RA060-01 Otis梯级otis不锈钢梯级TJ800SX-E奥的斯梯级Otis扶梯配件EE-SX673P

A06B-6079-H291No machine room elevator two-way speed limiter WXS1 No machine room speed limiter speed limiter tension wheel rope pulleyE3X-A11-8

A06B-0031-B075LG Door Knife LG Elevator Door Knife Star Horse Elevator Door Knife LG Elevator Accessories Elevator Door KnifeG3A-240B

A20B-2902-0671Otis comb plate ldtj - b - 3 ldtj - b - 2 ldtj - b - 1 Otis escalator comb xaa 453 c5S8VS-48024A

TACS-4-IAKONE Elevator Alarm | KONE Elevator Voice Arrival Clock KM 851980 KONE Elevator Arrival LampEE-1010（带线）底座电眼底座2米线

R165189420Elevator copper boot lining elevator copper boot lining cargo elevator copper lining cargo elevator copper boot lining elevator accessories copper boot liningE3X-NA14V

A20B-8100-0271Mitsubishi Elevator Wire Rope Shopper Elevator Traction Rope Shopper Elevator Car Wire Rope ShopperE3Z-D67

A20B-8101-0430梅轮梯级梅轮不锈钢梯级TJ-S-1000梅轮扶梯梯级TJ-S-1000梯级E3Z-L61

A03B-0819-C011KONE Door Motor KONE Elevator Door Motor 89717 G 0889717 G 06 KONE Door Opening MotorK3415

6MBP75RA060Sirkon Motor 3201.05.9259 Schindler Overvoltage Protector ID.57601671G7SA-3A1B

A20B-2001-0781Otis扶梯驱动链轮Otis扶梯驱动链条轮Otis扶梯齿轮Otis链条轮E3HT-DS3E1直径M8 NPN常开

A20B-8100-0135 Kone Gate Transformer Witt Transformer 10004119 AT25 Porcupine Transformer 603805 G01PZ0A150H

A02B-0323-C205Munick boots lining munick elevator boots lining Liuzhou elevator boots lining Liuzhou munick elevator boots lining board正品时间继电器H5CR-B

A06B-6110-H006Double - fold side - split variable-frequency door opener elevator variable-frequency door opener Mitsubishi elevator double - fold side - split variable-frequency door openerE52-CA20A D=3.2 2M

A16B-3200-0427Otis electronic board MC B2 GBA 26800 H1 XAA 25140A B2 J 0610 GJN 62 P 20105T720-012EL0

A06B-6114-H211Schindler handrail with speed wheel Schindler speed wheel handrail with speed wheel escalator speed wheel escalator accessoriesG3M-202PL-UTU-1

A16B-1210-0591Elevator machine room distribution box XSD SF - 63 AKC elevator machine room brake box elevator power box padlockSRT2-OD16T

A16B-1100-0260-11BTriangle lock key Otis triangle lock key Otis elevator triangle lock key elevator triangle lock keyWL01D2-LD

A06B-6079-H104Kabbah lock core electric lock elevator Kabbah lock 300 # 400 # 500 # power lock elevator base station lockG3F-203LN

A20B-2900-0110KONE Escalator Running Indicator Escalator Direction Indicator Light Traffic Light KM 5225920 H 01 YK - LEDDRT1- OD32ML

A860-0370-V512Fujita Brake GSD - 100 DZS - 135 F Fujita Elevator Brake Fujita Hold BrakeG3SD-Z01P-PD

西尔康门刀西尔康变频门刀西尔康电梯配件威特变频门刀门刀C200H-OD212

A860-0392-V160Otis elevator floor magnetic stripe Otis magnetic stripe Otis elevator magnetic stripe 270 * 20 * 6 Otis floor magnetic stripeR88D-UA20HA

A06B-0148-B075 Zhan Peng Door Machine Inverter Show Peng VVVF Door Machine Controller VVVF Door Machine Inverter Elevator AccessoriesE3T-ST21

A20B-3900-0163Otis elevator opener synchronous belt wheel Otis elevator opener synchronous belt driven wheel synchronous belt wheel 8mP50B08075XHS

A06B-6079-H304The hollow guide rail pressure guide plate folding magnetic plate pressure guide plate fully presses the guide plate fully lifts the pressure guide plate pressure guide plateE3ZM-B61

CN-M3030A-C24P2

BFN-M1204A-V14S12

FM18-R2A-C24S12-F

FM12-T02P-C31S12

FQ60-R12MU-P35P2

BAB-M81.5-CV2P2

FM12-L52D-P51S12

BFB-M1805P-V21P2-S

BB-M50.8N-P-V21P2

FM12-T02N-P31S8

TSB13202B-3BTA-1

BFB-M3010U-V25P2

BB-Q2802P-P11P2-T

VELCONIC VLPSV-070P3-AB

BB-H6.503N-V21P2-S

BB-M802N-C11S12

FQ31-R4P-P31P2

BB-M51.2N-V11S8

VELCONIC VLBSV-Z08030

BB-H6.502N-V11P2-T

ESDA20B-CC401G27F

 SGDM-A3BD

 SGDB-60AN

 SGMP-15A314

 D43M24-02

 SGMPS-02ACA21编码器

 SM-6E

 RYS401S3-VVS

 VQ1200Y-5

 SGDS-20A12A

 ETP713481

 SGMGV-1EADC6C

 SGMGV-09ADC61

FM12-L52D-C51S12
BN-H6.502N-V21P2-S
JAPMC-IO2303-E
EV1000-2S0015G
FM18-R2A-P24P2-F
SGDM-60AD
BAB-M81.5-CV2S8
SGMG-75A6A 

CPT020022 YD5000 7300PA
EV3000-4T0185G
VELCONIC东荣TOEI VLAST-070P3
An Chuan Inverter G7 Universal Main Board 11kW
CB-M3020U-P15P2
BB-M40.6N-V21Z8
CIMR-G7B4185
BN-M804P-V11P2-S
BB-H6.501P-V11S8-S
ETC615992
CB-M1808U-C25P2
SGMM-A3C3SD11
BB-H6.503P-V11S8-R
MEV1000-20015-000
SGMGH-20ACA6S
BN-M1204A-C24P2
SGMAS-01A2A-AD11
ESDA20B

CIMR-E7B4110
BN-M3025P-C11S12
BN-M3016N-C11P2
SGMJV-08A3E6S
BB-M801N-V11P2
BB-H6.501P-V21S12
SJDE-04APA
VELCONIC东荣TOEI VLBSV-50015 VLBSV-75015 VLBSV-10030 VLBSV-18030 VLBSV-24030
BB-M1808C-C13P2
SGMJV-08A3A6C
BB-Q551.2N-C21Z8
SGDS-02A12AY506-E
BN-M802N-C21S12
BFN-M1204N-V21P2
BFN-M1206P-V11S12
VELCONIC东荣 VLPSX-320P3 3φ200～230V/35kVA 20.0kW
BAB-M3010-CV2P2
VELCONIC东荣 东芝BS VLBSV-75015 7.5kW/47.8Nm 1500/2000rpm
An Chuan Brake Unit 220 V 15kW Main Board D11 - A91290 - 5
CACR-05-SKAC

TFB0912UHE 工程的Tris Manning （左）和Rick Hannasch (中) 和他们的客户代表在一起。他们认识到用HMI功能代替复杂的PLC程序带来的好处， 如果附近有直接起动电动机和电磁炉等设备，为防止这些设备投入时造成的电压降低，应和变频器供电系统分离，减小相互影响；对于要求瞬时停电后仍能继续运行的场合，除选择合适价格的变频器外，还因预先考虑负载电机的降速比例。变频器和外部控制回路采用瞬停补偿方式，当电压回复后，通过速度追踪和测速电机的检测来防止在加速中的过电流；