楼宇控制可以说是一个很好玩的行业,价格奇高,但功能却不并复杂,所以现在有很多工程商在使用小点数的PLC组网代替DDC,但在易开发方面相对要差一些(主要是监控软件),主要是楼宇本身是高利润行业,大家对一个点近千元的价格并不感到无法承受,只有当楼市价格下降竞争大了才会有可能重视成本方面。
个人认为未来楼控很难作为一个单独的控制器种类存在,而会被其它产品给吞并,例于PLC。
数采行业因为受到了GPRS、GSM等业务的影响,正出现一次比较大的变革,特别是在远距离方面,传统的MODEM、RTU方式正受到很大的冲击,在我们经手的很多环境监控、管道监控、路灯节能、水文监控方面很少有客户能经受GPRS DTU的诱惑。DTU的基于网络和透明通信方式深受大家的喜爱,只是目前DTU的价格相对而言还是比较高,如果能掉到GSM MODEM的价格就比较合适了。除此之外移动对于数据业务的支持还是不够,早期还可以用神州行卡,现在已全部关闭了,只能用全球通,而全球通每月50元的月租实在让人很恼火,一个城市的路灯节能控制器如果全部上GPRS,假设有1000个点,那么每个月就需要5万元的开支,还不包括流量的收费,对于公共事业这还算好,对于工厂或者电梯的监控就很难受了。
无论如何GPRS DTU是一个方向,单节点月费用不超过二十元,单节点价格低于400元时将是其大行其市的日子。
2、未来的控制系统
前面讲了这么多历史,下面看看我心目中的未来控制器。
经过FCS和现场总线的浪潮后,各大公司好像都累了,这几年大家都在底头为下一代的控制器做各种研发和准备(包括理论和实践),在这个过程中,我们与东芝、AB、思博等公司进行了比较深入的合作和交流同时也有了一些自己的想法:
我认为将来的控制器将会分为以下三类:
Tektronix THS730A Digital Oscilloscope 200MHz Scope DMM
Tektronix DMM4050 6.5 Digit Resolution Multimeter
Comes with CD Manual, Documentation, USB Cable, Leads
One-day shipping available
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Tektronix TDS430A 400 MHz, Digital Storage Oscilloscope
Tektronix ADA400A Differential Preamplifier
TEKTRONIX TLA7N4-6S 2 GHZ LOGIC ANALYZER TLA704 TLA711
Tektronix 11801C
Tektronix ADA400A Differential Preamplifier
Tektronix Model 7854 4 Channel Oscilloscope. With Opt.
Tektronix 11801B 50 GHz Digital Sampling Oscilloscope
Tektronix 015-0310-01 TMS5006 CG5001 SG503 Calibrator
Tektronix 7B92A Dual Time Base Plug-In
One-day shipping available
Tektronix TAS475 oscilloscope 4 channel 100 Mz w probes
TEKTRONIX SD-42 6 GHZ HEAD CSA803C 11801C ELECTRICAL
TEKTRONIX P7330 3.5 GHz DIFFERENTIAL PROBE
TEKTRONIX SPG-422
Tektronix 11801 Digital Sampling Oscilloscope
Tektronix TSG170D Digital Composite NTSC Generator
Tektronix TSG170D Digital Composite with 1J – 1S
Tektronix TSG170D with 1J
Tektronix ADA400A Differential Preamplifier
Expedited shipping available
Tektronix 760A Stereo Audio Monitor
Tektronix 11403 Digitizing Oscilloscope – 4 Modules
Tektronix CG551AP Programmable Calibration Generator
Calibrated, 30-day warranty/14-day right of return
TEKTRONIX CTS 710 SONET TEST SET CTS-710 w/access.
Tektronix TSG271 PAL TV Generator
30-day warranty/14-day right of return
TEKTRONIX PS280 DC POWER SUPPLY
Tektronix 2465A DM Oscilloscope
TEKTRONIX TLA714 Logic Analyzer,Color Mainframe,6 Slots
NIST calibration/30-day warranty/14-day right of return
Tektronix TLA7N4/6s Logic Analyzer Module, 136 Ch.
Guaranteed fully working. New 1yr calibration 14day RoR
Tektronix P6042 Current Probe
Tektronix TEK 2467/10 Oscilloscope 4 Ch. 350 MHz
TEKTRONIX 1503B METALLIC TDR CABLE TESTER W/ EXTRAS!
@@@ CALIBRATED @@@ CALIBRATED @@@ CALIBRATED @@@
TEKTRONIX 2337 100 MHZ DIGITIZING OSCILLOSCOPE
Tektronix VX4610 SDH/SONET Generator/Receiver
Expedited shipping available
Tektronix 2465ADV Portable Oscilloscope 350MHz, 4 Ch.
Expedited shipping available
Tektronix Model: VX4790A arbirary Waveform Generator
Tektronix 1735 Waveform Monitor
Tektronix 1740 WaveForm Monitor w/opt 06 (Reduced!)
Tektronix P7240 4Ghz Probe ACCESSORIES #25 Tested
Tektronix TDS 340Areal time osilloscope
Tektronix SD-22 Low Noise Sampling Head Module
Tektronix RFM151 SignalScout Signal CATV Meter RFM 151
@CALIBRATED@SALE@5 to 1080 MHz Range@90 Day Warranty@
Tektronix THS710 THS 710 “TekScope,” NIST-calibrated
additional free NIST recalibration within one year
Tektronix TekScope THS720A 100MHz Oscilloscope THS720
@CALIBRATED@SALE@100 MHz/ DIMM/ 500 MS/s@90DayWarranty@
Tektronix TDS 310 TDS310 digital scope, NIST-calibrated
additional free NIST recalibration within one year
Tektronix 2232 storage scope with RS232, NIST-certified
additional free NIST recalibration within one year
Tektronix TDS 310 TDS310 digital scope, NIST-calibrated
additional free NIST recalibration within one year
TEKTRONIX ASG-100 AUDIO SIGNAL GENERATOR
Tektronix 2465BCT Oscilloscope, 400 MHz, 4-Channel with
Tektronix 11403 1 GHz Color Digitizing Oscilloscope
Tektronix 1730 NTSC Waveform Monitor
Tektronix HFS9DG2 Four Channel Single-ended output Data