smart House

There are two smart man. The customer and integrator … Word for word, and away we go. They began to work out the terms of reference, the composition of possible requests for the establishment of a system for the smart home.

That’s about what happened:

Customer requirement

The parameters of the devices, binding scripts to facilities and events should be sewn inside the program, they must be stored separately and synchronized in the system for possible adjustments. Separately it is necessary to define the list of parameters.

Comment Integrator

I propose to store all settings and parameters in the Scud. You can optionally associate Scud with a file that will store all the recipes / parameters. Access is initialized at restart and then distribute the parameters controllers.

Customer response

If Scud – just for the record in the database, it is a little expensive solution. For example, the WAGO PLC can write to the database, there is a corresponding library. We need to discuss. Rdp-a definite plus. But we must look at all the features Citect.

In response to the Customer

Knowing the level of your problem, I will not take for its solution through Codesys library, as the complexity of this implementation and glyuchnost obvious to me. If your conscience does not torment use stolen food, then let’s install WinCC with kryaknuta key. similar functions.

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Customer requirement

Self-diagnosis system.

Comment Integrator

All intelligent components in the network will have a diagnosis (self-connected circuits + variable life for the master).

Customer response

SALE.

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Customer requirement

Redundant hardware and data.

Comment Integrator

It makes sense to invest in a cabinet in advance of the second set that can burn or messed up. So you can more quickly be repaired.

Customer response

It will turn out if the equipment is cheap, it is better to buy more expensive and more reliable. And if expensive – in the second set to go under.

In response to the Customer

Do you all very much. Aries IO quite reliable and relatively expensive. The more immersed in this task, the more clearly I see the PLC WAGO + Aries secondary modules, painted on different floors and niches. Easy to change, well-diagnosed.

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Customer requirement

Protection from false alarms: what to do with anomalous values of sensors, eg, when you exit them down, or turn off – check the values at the program level..

Comment Integrator

Will come sign line is closed or open. If you are due to security sensors, then the gap will have to put resistors and use the analog inputs. It is necessary to specify in advance.

Customer response

The situation: when you restart the new sensor values of the system will be equal to 0, the system will start to react. The same is true in case of failure of sensors. The idea is that sensors operating ranges must be defined at the program level. Eg., Temperature sensor from -40 to + 50. Any deviations beyond the range = failure.

In response to the Customer

Overloading – rare indeed sometimes accompanied by false reports. If you fail, the machine will be removed from the action in the system.

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Customer requirement

Discrete variables with a value of 1 or 2 to 0 signaled a fault.

comment Integrator

Please explain.

Customer response

If the sensor is faulty, it will give zero system. At your discretion, as Use bits instead of bytes and loads the program memory.

In response to the Customer

We will not diagnose the serviceability of a discrete sensor, alas. That is the reality. We can only diagnose the module where it is connected.

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Customer requirement

It is necessary to provide for programming immediately, what would happen if the sensor is turned off, as It can not be unconditionally tying the whole system to work the sensor, or if the sensor fails, the system will durkovat.

Comment Integrator

It has always done. The important algorithms provides rejection devices. If he refused, then there is a manual or remote modes. In nevazhnyh- simply crossed out and the fault is signaled.

Customer response

OK. Then it is necessary to classify all of the algorithms in the critical, important and ordinary.

In response to the Customer

Keep it simple. All are doing critical, just think through the logic of the algorithm in case of failure of the device. This will be the development of algorithms. Everything should be described before programming. So it turns out more expensive to develop, but then less questions.

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Customer requirement

In any case, you need to consider all the options for reservation: 1) if the slave has stopped working; 2) if the controller has stopped working. On the one hand, the decision – module redundancy, on the other hand – if I configure or disable individual systems, they somehow have to keep working in the clumsy mode without intelligent control – lights must be switched on, heating and ventilation work, security alarm should be standard alarm input and a separate input from the smart home -. eg, through relyushki from the controller – ie should be separation anxiety from the network installer secret police and my network.

Comment Integrator

Sense of place redundant controllers – can not see. This is not a nuclear power plant, not a chemical factory, not mine. Simply place a single, but good equipment with a reserve power. If fails, it will not soon, and in this case, consider a scenario and minimize risks. For all that it is important to be duplicated blunt, circuitous electrical circuits. If dead smart – work handles with shields. Divide the network into two or three – welcome.

Customer response

OK.

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Customer requirement

it must be installed if the equipment does not meet the need to determine what value for each type of sensor.

Comment Integrator

Usually I do 1.111. It is rare to find such a combination. If you see on your PDA, instead of the temperature unit – a device failure or communication with him. I suggest it to facilitate understanding of the system

Customer response

Clarification.

In response to the Customer

If you see on your PDA, instead of the temperature unit – a device failure or communication with him. Invented to facilitate understanding of the system.

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Customer requirement

The system shall signal and display panel of the output elements of the system.

Comment Integrator

Please specify which panels are meant (built-in cupboard in the wall). I had previously thought that the panel will not be ARM.

Customer response

Meant interfaces: the web interface and iridium.

In response to the Customer

Why do you need a web interface, if the Iridium? As you do not want to produce applications. The more manual work, the more significant the human factor. One application will be some errors on each other.

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Customer requirement

Recording and restore the settings and the settings in the PLC-volatile memory.

Comment Integrator

Everything is stored by default. You can even store the last entered values (retentive).

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Customer requirement

Recording of readings of sensors in a database set frequency depending on the type of sensor.

Сomment Integrator

All this serves SCADA level.

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Customer requirement

Register readings of all sensors should be performed in the matrix arrays of sensors for data types where a uniform index in the array variable identifies floor and the room on the floor.

Сomment Integrator

Identification will be conducted in accordance with the classification and coding system, which was developed jointly. Archiving all indications – the task of SCADA-system.

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Customer requirement

Separation of software and hardware for processing signals from the sensor frequency.

Сomment Integrator

Please explain why divide by the frequency of the signal processing software and equipment if power controllers to be missed.

Customer response

Where required a quick response (light), the processing of all parameters will slow down the system and response. Therefore switchable settings (security sensors) is better not to include an algorithm with light. Same with heating. We need to discuss.

In response to the Customer

The system will not work with a single cycle, of course) will be distributed in different PLC, each PLC different tasks with different cycle. If you are not going to cram it all into one PLC – nothing to worry about. Every PLC will stand in her closet. The roles of the cabinet will be strictly defined.

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Customer requirement

To create a system of programming web interface all the parameters and settings must be contained in a matrix on the host PC and broadcast in the PLC to achieve the backup of all parameters (settings).

Сomment Integrator

The interface will be connected to a SCADA system. SCADA system will contain all necessary settings which it will be broadcast on the associated PLC.

Customer response

Will the PC with Scud more reliable storage place than the PLC?

In response to the Customer

Your object is to recruit all hotelok – a full-fledged mini-factory. Such a volume of disparate data can accumulate in itself (and not least output) PC only. PLC and so good that it is unloaded from all the problems of windows, its task is to control the clock and all year round.

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Customer requirement

The ability to review the scenarios through the appointment of relations between the parameters, eg., Through a Web interface.

Сomment Integrator

It is due to the adjustment of the existing script (written) or something else?

Customer response

I mean that all the algorithms and scenarios need otstrukturirovat so that anyone could create a new appointment by any existing links between the parameters in the system. Roughly speaking, I want the button light switch in the bedroom to start a warm floor in the kitchen, so that it could be done. Eg., That it could be done by assigning it a new connection between the parameters of the algorithms.

In response to the Customer

The script – this is not a table linear interactions. Somewhere in this sequence, and in some cases quite ornate logic. I see this approach is somewhat utopian to implement, but if you are able on a sheet of plain language to present all scenarios show how it will look graphically – will do. I still see it, you’ll be able to build upon the operation of the house scenario, it will be much easier than to redo more than one application, only by the fact that a feature was not provided.

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Customer requirement

All notifications must be assigned to the importance of classes, eg., In sleep mode to alert was only about very important events.

Сomment Integrator

This is done on the basis of the PLC.

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Customer requirement

Alert Channels:

Speakers
Alarm control panel
SMS to the specified mobile phone number
A call to the specified mobile phone number
E-mail to the specified mobile phone number
Teletext included TV
Сomment Integrator

I know how to make a SMS to the specified mobile phone number. It takes a modem connected to the PLC. For the rest will have to take the advice. We call these multi-functions. There are companies and individuals who specialize in this. On the interface of interaction we agree.

Customer response

OK. I think that it needs to look for software solutions based on PC. By the way, about multiroom. I think we should definitely look for a solution to the software, as hardware solutions very quickly become obsolete and their upgrade very expensive.

In response to the Customer

There are pitfalls to such a solution on the PC. Firstly, to communicate with the modem will then Scud with communications module is coded into the PLC. SMS sending device with Simcoe, ie modem. You can of course and USB-modem sharpened by it, but it is important to work with a guarantee, industrial solution much less buggy.

Anyway, the important hardware solutions software. Interface exchange is also a hardware solution. Without ports with support for the protocol known to us, we do not associate equipment.

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Customer requirement

Manage internal facade, landscape lighting – inside the house, outside the zone, the facade, arbors, pathways, parking, gate.

Сomment Integrator

Let’s define the type and number of luminaires and lamps. If fluorescent lighting, this dimming ballast DALI. If this power spotlights, it starters or lattery. Depending on capacity, the number of fixtures in the beam, the need for a smooth (interest) ignition.

Customer response

After 1-1.5 months will be ready to design the project, all the lights and lamps to be mentioned by name there.

In response to the Customer

Looking specifications (table), somebody will buy everything.

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Customer requirement

Management as with conventional switches, and any interface.

Comment Integrator

All switches will be wound up on the controller. Master will understand and remember where and who that clicked. If you fall asleep, he turned out the light and highlight the pale, if, for example, stand up (motion sensor).

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Customer requirement

Automatic on / off / dimming interior and exterior lighting, depending on the light conditions.

Comment Integrator

If there is a sensor that measures the ambient light, it will be either one of the scenarios, or optional feature of each of the lighting scenarios.

Customer response

Yes. It turns out the following: lighting scheme – a discrete setting and adjustment to the light level – analog parameter. The question here is what I had planned to use a large number of energy-saving lamps, and they are discrete.

Therefore, the following options:

Light scheme – it only included a set of fixtures, the level of their brightness adjusted to the street lighting.
Street lighting can be divided into ranges: in each range includes its light scheme. Schemes otranzhirvat the level of light.
Your option, which, in fact – it is the combination of the first two.
In response to the Customer

Light Safety bulb – is, in fact, fluorescent lamp, only with base and ballast inside. They are used for long, stand as a fighter, if you take a lot. Manage brightness impossible. Convenient for you to change them? And why change them? Fluorescent lamp in floor heating, controlled by DALI ballast will last longer, and when the dies, the ballast will tell you about it. You decide.

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Customer requirement

The inclusion of external illumination by light sensor – through the modes of operation of the building.

Comment Integrator

When we develop lighting scenarios, then we discuss it in detail and describe. Will be called “Description of algorithms.”

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Customer requirement

To avoid the influence of ambient light fluctuations thresholds for turning on and off light should differ by 10%.

Comment Integrator

Rather, the delay timer is needed there. If the cloud has come and hang more than 5 minutes, whether it is not a reason to declare that it was dark, and turn on the backlight. Quenching can be without a timer.

Customer response

Let me explain: some parameters (light, temperature) change very inertia, so you might need a range of intervention. . For example, to turn on the 1st light illumination scheme should fall to 1000 lux, and to turn it off – up to 1100 lux. Otherwise, it may potentiate the activation of lighting around 1000 lux. Timer – also an option, but it will not take into account the drastic changes. I here mean not only light, but any analog sensors.

In response to the Customer

Option for switching hysteresis (ie what you have offered) is quite satisfied, simple and logical.

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Customer requirement

Automatic on / off according to the algorithms for determining the presence of people in a room, the direction of their movement.

Comment Integrator

Implemented with the presence in each area of the motion sensor and the selected management strategy in the house at the time of the passage of a person.

Customer response

You can put 2-3 Sensor in the same area included in points (if you can not pick up a very expensive sensors).

In response to the Customer

I can not pick up sensors and mechanisms. Creating automation system typically does not include the selection of secondary equipment (sensors, actuators, blowers, pumps, etc.). The implication is that it is already selected, and must be a part of the automation system to do. There’s a large number of unknowns for me. Mistakes are inevitable, and it is clear that the error in the selection of equipment = purchase of another. Ready to analyze the purchases that will choose, for connectivity.

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Customer requirement

Automatic shut-off light in the rooms where there are no people – to the data from the IR sensor.

Comment Integrator

Yes, this is no problem. Clearly it should be longer, and that the sensor? What is it out?

Customer response

The sensors must be chosen.

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Customer requirement

Discrete start and dimming lighting.

Comment Integrator

DALI. Now I am going to account for this equipment, study the markets.

Customer response

OK. Tell us about the possibilities at the meeting, or if there is a link to some manual / videos for beginners DALI.

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Customer requirement

Smooth switching on and off light bulbs (to increase their service life).

Comment Integrator

You are going to use incandescent bulbs? If so, some managed lattery. It is necessary to study this part of the work is likely that there are devices in DALI.

Customer response

You can do it through the dimmers?

In response to the Customer

What did not exist in nature. But if I did for myself, I try to execute the lighting fixtures on one and the same type, so it will be easier to maintain.

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Customer requirement

Binding of each light unit in the area / room – a table of data in the system.

Comment Integrator

Rather, the designation of each unit, we encode the name of the premises and the place where the lamp is placed. You can even place a current transformer and monitor how much current flows through the circuit, if less than the set point – then somewhere there is a break, go look in the zone.

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Customer requirement

Setting light scenes via an interface: the creation of a new stage based on the current values of the selected interface of lighting devices, for this choice of lighting in the room with one button.

Comment Integrator

Implemented on the basis of Saytekta. Will the recipes page with questions and check boxes Yes / No. Answer the way, here’s to you and a new recipe. You asked it ourselves.

Customer response

Same thing for DALI: is there any presentation / manual for beginners?

In response to the Customer

No, it’s in my head. He did something similar. Imagine the work of the hurdy-gurdy, now imagine that there is a table and you can put a tick differently. Run the hurdy-gurdy. We hear a very different music. Arrange rolls – a recipe.

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Customer requirement

Turning facade lighting at night, turn off at night.

Comment Integrator

Timer. It will be implemented in the master (PLC).

Customer response

Or, from the level of lighting. Turning off – already scheduled, or lighting of choice in the system.

In response to the Customer

Turning on the level of illumination, turn off timer.

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Customer requirement

Automatic control of lighting by the given modes of knowledge work / premises, run scripts

Comment Integrator

It will be implemented in the master (PLC).

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Customer requirement

ambient light sensor is placed so that they are not influenced facade lighting.

Comment Integrator

How much will all light sensor? I always thought that the one with the sunny side of the house is enough. All other scenarios can be proportional to associate with him, as always pales in proportion everywhere

Customer response

Similarly, you need to split in Nort and South, perhaps, another – on the East or West

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Customer requirement

Because Lighting can be a very high threshold of 10 000 – 65 000 lux can not give a measure radiation, leading to strong heating of premises through windows. Use multiple ambient light sensors with different ranges?

Comment Integrator

The idea of solar heat to heat I like. If the light on the side of the house, opens the blinds, temperature increase, hence the coolant regulator itself will cover, as the delta between the SP (set point) and the PV (temperature) decreases.

Customer response

Yes, there are two effects: 1) to use the sun’s heat to lower the battery to heat (here probably a fairly simple algorithm by heating the room temperature). 2) cover the shutters / blinds at too bright light.

In response to the Customer

You can combine.

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Customer requirement

The system incorporating the emergency lighting

Comment Integrator

For emergency lighting factory starter, their lines, perhaps with the battery, through a normally closed starter. When the main power disappears spontaneously, the starter is released and the emergency light is switched independently. PLC is not to blame.

Customer response

Yes, apparently, normal UPS-bound protected sockets, power lines to the UPS.

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Customer requirement

How the system will understand that the light is on? Variable? What use switches?

Comment Integrator

If the system variable is signaled, and her lamp is connected, it is likely that it is not lit, and the variable TRUE – is minimal. Switches the most common need only be thinner wires from them, it is the digital inputs.

Customer response



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