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In this article, we use ssh to connect to a remote system and run a demo, Security Barrier Camera. The demo will be launched on the IEI Tank* AIoT Developer Kit (target) running Linux* from the Developer Workstation (host).
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When you run the demo, the command will run on the target from the host and the results will return to the host machine using X forwarding.
Terminology
Term | Description |
Host Device | Your Development Environment Machine - For example, your dev laptop or dev desktop machine |
Target Device | IEI Tank* AIoT Developer Kit |
ssh | Secure Shell |
scp | Not recommended per OpenSSH: secure copy protocol |
rsync | remote sync - an open source utility that provides fast incremental file transfer |
sftp | SSH File Transfer Protocol or Secure File Transfer Protocol |
For this article, the following recommended requirements are listed in the table below.
Requirements
Host Device Requirements |
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Target Device Requirements |
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Knowledge Requirement | To install and run the demo application, you will need: Familiarity with Linux* commands |
In this article, we will explore using ssh server to remotely run the toolkit demo. The host and target in this example are on the same network.
Step 1: Setup SSH Connection Between Target and Host | Setup SSH. Connect via ssh to the target. |
Step 2: Run the Security Barrier Demo Remotely from Host Development Environment - CPU | Open Security Barrier Demo Remotely using your Host Machine to run on Target, returning image result on your Host |
Step 3: Run the Security Barrier Demo Remotely from Host Development Environment - GPU | Run on GPU using -d GPU |
Security Barrier Camera Demo
The demo you will run is the Security Barrier Camera Demo included in the Intel® Distribution of OpenVINO™ toolkit. This demo runs multiple deep learning models, including license plate detection, vehicle attributes, and license plate recognition.
The host system connected to the target system, will be used to run the demo.
Note: The security barrier demo is located at /opt/intel/openvino/deployment_tools/demo
Below is an example of the security barrier demo output.
Step 1: Setup a SSH Connection Between the Target and Host
In this step you will be setting up a Secure Shell (SSH) connection between your host and target systems. This connection is required. This example scenario includes physical access to the target for setup.
Physical access: Connect a keyboard, monitor, and mouse to your target system.
- Connect your target system to same network as your host system.
- On your target system, install openssh-server. This is not installed by default.
- Obtain the IP address of the target system (IEI Tank*) using ip or ifconfig:
Once the target machine IP address is discovered, you can connect via ssh.
From the host system, test the SSH connection.
Use the flag X to enable X11 forwarding. The -X flag in the ssh command allows X11 from your target to display an output on your host.
When prompted enter the password of the user.
Troubleshooting Tip
If you get an error:
Verify the two systems are on the same network. Try pinging the target from the host, and the host from the target.
Verify the ssh service is running on the target
If it’s not running, restart the service.
Note: Without physical access, there are a few ways to discover the IP: Running a port scan, or if you have router access, you can use this to discover the IP address.
Step 2: Run the Security Barrier Camera Demo - CPU
The Security Barrier demo script in the Intel® Distribution of OpenVINO™ toolkit:
- initializes the environment
- downloads the models
- runs the security barrier demo
The results display using the car image provided in the demo directory. Since we used the -X flag when the ssh connection was established, we will see the results on the host system.
- Run this command in the terminal to change to the demo directory.
- Run the following command to run the demo
The results display with a car being identified in the frame with an overlay of the frames per second.
Because the target device is set at run-time, you can use the same binary to run on CPU, GPU, orother Intel® Vision Accelerator Design product. Run the same demo, but with the GPU to compare performance.
Step 3: Run the Security Barrier Demo - GPU
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- Run the following command to run the demo
2. Results display on the host. The results are similar to the image below.
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See Also
How To Get Your IEI Laptop Battery To Last A Long Time?
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Are you ready to get your acer laptop battery to last for a while? Understanding what type of battery you have and how to care forit can go a long way toward that goal. Steps that will extend the lifeof one type of rechargeable battery will kill another type of battery.Being knowledgeable on the type of laptop battery you own can go a longway towards being able to use your laptop battery for a long time tocome.
Know What Kind of Battery your Laptop Uses
The three most common rechargeable batteries on the market includelithium ion, nickel metal cadmium, and nickel metal hydride. Most acerlaptop batteries today use either lithium ion batteries or lithium ionpolymer batteries for a number of reasons. You can confirm this bypulling your acer laptop battery out from the bottom or back of yourlaptop and examining the tiny writing on it. Look for something thatsays either lithium ion, nickel cadmium, or nickel metal hydride.
Advantages of Lithium Ion Batteries
The most common battery in modern laptops uses lithium ion technology.This battery has a number of advantages over the other types ofrechargeable batteries. I'll list them below:
Lithium Ion Batteries don't develop a battery memory. Both other typesof rechargeable batteries can develop a 'memory' for shorter chargesdrastically shortening the amount of time your battery lasts betweencharges. Lithium Ion batteries though, don't suffer from memoryproblems.
Lithium Ion Batteries hold their charge for a long period of time. Theother battery types will lose their charge if left to sit around even if they aren't being used. Lithium Ion batteries will hold their chargefor a lot longer between charges even if the battery ends up sittingaround for a while.
You get more battery life than the other rechargeable types. For thesame size and weight, lithium ion batteries last longer between chargesbecause more of the bulk of the battery is dedicated to capacity ratherthan just 'overhead'.
Quick Way to Kill Your Lithium Ion Battery
Avoid the following list of things in order to get the maximum life outof your acer laptop battery. Some of the most common things to avoidinclude:
Do not subject your battery to extreme temperatures. Lithium ionbatteries do not handle heat well. One of the quickest ways to kill your battery is to leave it in a hot car even for a short period of time. In fact, if you aren't going to use your battery for awhile, you arebetter off storing it in the refrigerator but NOT the freezer, that will kill it too.
Avoid completely discharging your battery where possible. While othertypes of rechargeables like nickel cadmium batteries need to becompletely discharged, doing this with lithium ion batteries will killit. As much as possible, recharge your battery when it has around 40% of its battery power left. Recharge often.
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