楼宇自动化与控制

Since electricity costs keep on rising, the bills for convenience stores keep on increasing and unfortunately it’s difficult for convenience stores to raise their prices to maintain the same profit margins. Variable overheads are difficult to budget for and give accountants a headache, therefore one convenience store chain in Thailand has decided to redress the balance and put themselves in chargeof power generation by installing solar panels in their stores.Our customer wanted to reduce their energy costs by at least 10 percent and having installed solar panels in their store locations they needed to be able to send the power to where it was needed and when it was needed. Since the stores are open for 24 hours and it’s onlysunny forroughly 12 of those, it was essential that the power distribution to the lighting and refrigeration units was managed efficiently.

- Multiple A/C systems to be monitored through single central monitoring system. - Monitor Status of UPS, generator and switch gear status. Both digital and analog signals. - Monitor building for low voltage conditions and power usage. - Monitor for water leak detections. - Monitor the actual operation of HVAC units to include compressor amperages, refrigerant pressures, fan and filter status. - Implement open protocol Building Automation System for future multi-vendor expansion. - Monitoring and alarming of Space Temperature within a prescribed limits. The Ernst & Young's primary concern was a power loss and high space temperatures in the both the data center and LAN rooms. The UPS or generator would start and all A/C units would cycle on and off with no delay and this would put a drain on the power supply. E&Y sought to implement an integrated system that would not only effectively monitor, but also time out and stage the A/C system restart. They were also looking for a system that allowed for future expansion of the remote alarm monitoring.

If the embedded developer is using an Intel Quark or the next generation smaller class product to power an IoT device, one of the biggest problems they face today is which IoT communication protocol to adopt. Dozens of new wired and wireless schema are competing to own the network, data and physical layers. Several consortia have emerged to describe new reference architectures for communicating between IoT devices and clouds. And there are many solid legacy protocols with strong track records. From the developer’s perspective, it may feel like the risk is so high of choosing the wrong protocol that it might as well be a no-fly zone.