I want to bring all the electrics to the tablet on a Soviet car. What will be the ideas?

Question

linux

I want to remove all unnecessary and civilize the management. I'm happy to hear ideas and advice. interested in pay. software, and other little things. down to the turn buttons on the steering wheel itself. you can ready-made kits.

Answer 1

Let's fantasize?
For reading data: speedometer, tachometer, temperature / pressure sensors (liquids, gases), battery charge status, status of various nodes (I don’t know what you need to shoot), gyroscope (transverse / longitudinal slopes), gas tank fullness, etc .;
On control: everything that can be controlled and more, for example: lights, micro-motors of mirrors, all wipers, transmission control, there ... bridges, drives, shock absorber height, fuel path - economizing, fuel mixture, turbine mode, etc. P.
In the cabin: music (there is a lot of things in general), light, video, seats, heating - steering wheel, seats, interior, air conditioning, power supply status, windows, humidifier, signaling, engine warm-up, window tinting, navigation, informer, etc.
Here I see several architectural layers:
1. The level of various sensors: piezo, electromagnetic, gyroscopes, pressure, thermocouples, etc.
2. Galvanic isolation, wiring, relays and output to the computer / controller board
3. OS - low level: drivers, controls sensors, devices
4. OS - application level: Interface for managing and monitoring the entire electric kitchen of a car
Each of the layers in a good way needs a highly qualified specialist with development experience, for example, with which sensor is it best to capture this physics of the process? Or how to get all the devices on the computer? How many and which ports will be involved? In what format is communication with sensors read / write, analog, digital? Temperature/mechanical characteristics us-in. All very carefully design and order the board, components (having previously debugged / tested everything on the assembly lines). Write drivers or low-level abstraction code.
Reach out to the most interesting - the requirements for the software system for monitoring and managing this entire economy, logging, message bus, asynchrony / synchronism of all processes, process chains, for example, a pressure sensor generates an event, the parameters of which start adding oil to the system. This needs to be well understood at the system level with the OS, for example linux, android, etc.
Next - the display of widgets: panels, buttons, informants, alarms, messages, arrow / digital indicators, etc. And all this should be minimalistic, with perfect usability, as there is no time to enter the menu on the track, search for a section, select a submenu, launch and configure 10 parameters. Ideally 3 - click and everything is obvious. Ranging to VERY important, NORMAL and UNIMPORTANT control settings nodes, for example, switching the bridge operation mode is not as often as, for example, turning on the turn signals, so they should be on the nearest control panel in the interface, and the bridge can be hidden a little further away.
The asynchrony of all events and their debugging is a separate topic for discussion, these are dependent events, triggers, events ...
If there is time and versatile qualifications (perhaps many different people), then why not? It is best to allocate this to a startup for more than one year, of course.
Roles: auto-mechanic, auto-electrician, electronics engineer, programmers 3 pieces, etc.
You can, of course, not bother so much and connect several harnesses. pieces mustache, but I described the general principle, if interested, I will describe in more detail each of their layers.
In short ... do you need it??

Answer 2

The tablet is absolutely unsuitable for controlling devices while driving a car.
I say this as the author of the air suspension control device.

Answer 3

From my own experience - a Soviet car loves to burn electrics. Together with fuses, together with circuit board. I subscribed to the question, because the idea was the same last month. But I decided that I would not invent a CAN-BUS bus for the carburetor 2104.
In general, thinking about this issue, I decided that I needed to receive data not even from the relay unit, but from the actuators themselves, whether the contacts are closed / open. But to take in real life everything in the cabin (or near the stove motor) as a rule. The question remains open - you need a device that will drive the figure via USB, receiving an analog 12V signal.

Answer 4

First you need to decide:
If after answering all 3 questions there remains a desire to do something, then you can repeat the question, indicating the answers to the first two questions. Then the question "How" to implement all this will already arise.
While this question makes no more sense than "I want to paint an abstract horse in a vacuum, help me choose a paint."

Answer 5

A web interface can be displayed on a tablet, and the control itself and the web server can be raised on a separate computer.
In principle, using a USB relay , you can control the electrics.
For foreign cars there is a book: Car PC Hacks: Tips & Tools for Geeking Your Ride