We have been doing subsystems of the SIBUR company office. It was like being on a spaceship, because there are literally very few offices of that class in Russia. Most importantly, we implemented some very interesting things, which, it seems, will become the standards for office automation in several years. And in general it was interesting to work on this project.
Let me show you rather than tell you. Here, for example, is the weather station on the roof of the building :
It measures outside temperature, light, precipitation, and wind speed. All of this goes down to the climate control logic. The control controller takes data on room temperature, occupancy, and office schedule and from this determines how to use energy to maintain the desired mode. Proactive, that is, as soon as it gets a little colder outside, it starts to heat a little more.
Power consumption is minimized on holidays and at night. The system reacts to the presence of people and behaves accordingly.
This weather station also has GPS sensors for the building’s timekeeping system. But I’d better start with the dispatching and control of building subsystems, because that’s the most interesting part.
Rooftop chillers :
Manual remote control (used very rarely as a backup):
The power of automation is that all building systems work in a single logic. They change data, are connected with each other by scenarios. We have built everything on a single KNX bus (it is analogous to the CAN bus of a car, only huge and for buildings). Each node of the building is available in the bus, transmits to it its parameters and can receive commands. A light bulb burnout is seen as an event on the bus. And so on.
For example, inside office areas there is ventilation, cooling, electricity, lighting, convectors in the floor and so on – this is room automation. The office lighting is controlled through the bus, the curtains are controlled through the bus and so on. There are light sensors inside.
It looks like this :
– The climate control system takes the schedule and prepares the building for people coming in after the night. For example, it does not dehumidify or humidify the air at night.
– People come into the office in the morning. When they enter the offices, the office subsystems, particularly the lighting, are turned on. If there is no bright sun outside, the curtains are opened and the electric light is dimmed accordingly so that the sensors have a set working standard of light. In summer it is vice versa: when the system sees that the sun is on the side where the office window is, it is blocked by an automatic curtain.
– In addition to the general temperature, many rooms have their own control panels. For example, you decide to make some office or meeting room warmer or cooler. Then the climate control system selects the scenario automatically. You can’t heat and cool at the same time, for example. The system itself chooses what to run and with what intensity, by what means. There are convectors in the floor and fan coils in the ceiling. The fan coil has heating and cooling. For example, if you increase the temperature – the system sees what to do: only fan coils at low speed or only radiators, for example. If you need to heat a lot, maximum speed and all the valves.
– Lighting can also be controlled manually. For example, a person enters an executive’s office – the default is to turn on one group of lights at 30 percent, the light above the desk at 100 percent, and the main light at 60 percent. This is the "workday" scenario. You can further adjust everything manually or choose a different scenario.
The sensors throughout the building are very good: delays are normal, sensitivity is high. There is no problem of lights suddenly going out in corridors or toilets. In general, human breathing and micro-movements are enough for them to detect presence.
Bulbs via DALI protocol report replacement. Functionality of fault indication at the dispatcher is implemented. The technician sees a fault in a group of lamps, goes to take a look.
The control room sees all systems, all current parameters, alarm messages. For each parameter a historical graph can be displayed, for example, temperature for the last 24 hours. All 12 thousand signals are archived, about 2-3 thousand of them are logged. The data are stored depending on the criticality from a week to two months. Everything can be displayed as a graph to clarify emergency situations, see what, when, who is responsible. Without a comment from the dispatcher on the incident (what measures have been taken), the emergency event cannot be removed. The dispatcher’s screen is duplicated with the operations manager.
The system is very well protected from external influences. Standard set of protections plus its own very strict security policies on the network. No technical network : in fact, it’s important to the customer that you can’t just plug it in anywhere in the building.
A lot of work was done on the SCS. In general, there is a standard story, but two important things should be noted: in the offices there are hatches in the floor, in which there are consolidation points and backup ports. I.e. we put SCS "on the rise" and take into account the fact that it would be good to add the possibility of quick reconnection if we need it. The cross-country field is gorgeous and it was possible to use short patchcords everywhere. Like this :
Multimedia (and a little more automation)
Let’s start with the offices of department heads and top management, of which there were 24.
Management is always in touch with remote departments, so all offices have video conferencing (camera, digital screens, overhead microphone, etc.). Here’s that microphone in the photo, by the way :
As for the display panels, they are mounted on ceiling or wall mounts or built into niches in the wall. There is a separate PC to watch a presentation on the big screen or to give content to a videoconference. It is located behind the LCD display panel and a USB cable is connected to it.
It’s about the same on the top management floor, except the screens in the offices are larger in size. By the way, the 3D mounts on these 98-inch wall-mounted TVs move in different directions so that they are flush with the furniture and cabinets. Custom design.
Here is one of the cabinets :
By the way, if the top management or executives have questions about multimedia, the operator can remotely log in under the administrator and do what they need from their computer (the customer had requirements for remote maintenance of offices). The technician’s control is duplicated at the receptionist’s office as well.
Multimedia equipment is in the classrooms, and the central equipment is in the server room (codecs, controllers, switching). All lines are physical wired: acoustics, twisted pair, all microphone cables. Wi-Fi is forbidden. Nothing wireless according to IS requirements.
Each room (offices, meeting rooms) is equipped with a unified system of multimedia equipment control – a wall-mounted touch panel allows you to centrally configure its modes of operation.
Here is one of the talks :
This intercom system has a polarizing film on the glass. The transparency is controlled by the presence of people inside or manually from the intercom panel. When the transformer is energized, the film is frosted. To keep it unplugged after 11 p.m., the meeting room is transparent by default. This is how the lighting is controlled :
And here’s the column on the 9th floor in the elevator lobby (where the top management works) – a stele for 4k. You can’t see it’s a TV there, it’s all behind thick glass. It’s very nice. This very TV screen broadcasts SIBUR corporate news in real time (top management address, important events, training schedule, etc.).
A separate pain is how the screens were shaped into the interior. Many offices and walls were made in stemolite (the kind of glass that can only be shaped at the factory, frosted or with patterns). In order to install equipment (under a control panel or television set), you had to provide the factory with drawings. This is high-strength glass, which is made to order. It is important to hit with an accuracy of two millimeters. The glaziers didn’t always get it right.
The challenging part was the existing building and the space was limited. For cable routes, there was not enough space in the ceiling space, we had to reduce the plans to the millimeter, which sometimes gave rise to a rather strange form of junction. A total of 15.5 km of cable was laid. Somehow the contractor could not break the monolithic slab with armature for ventilation machines during all the days of the New Year, they were sawing it with special cutters.
Oh, yeah, and we did all this without stopping the office, just floor by floor.
Here’s my email if you have any questions – write :