Why is the treatment of electrical workers and electrical engineers far from each other? These convince you to take orally!


Release time:

2021-01-12

"Electrical engineer" refers to the technical personnel engaged in the design of electrical systems. It is a professional name and a professional technical level. If it is an operator, it is called an "electrician".

"Electrical engineer" refers to the technical personnel engaged in the design of electrical systems. It is a professional name and a professional technical level. If it is an operator, it is called an "electrician".

 

 

Newcomer electrician: First of all, it takes about 1-3 months to do odd jobs, help the old electrician to be the guardian, hand over tools, take multimeters, put cables and collect materials (this is related to your learning ability and interpersonal relationship. Some teachers teach more and naturally learn more).
At the beginning, it was when you and your colleagues were running in. After passing the internship time, the master would arrange some, connect sockets, repair workshop lighting, check simple motor forward and reverse control, self-protection circuit failure, replace switches, contactors, limit switches, etc., so that you could contact some simple circuits and cultivate your independent maintenance ability and courage.
Because, after all, electricity is a dangerous substance, can not see, also can not touch, a second can waste a person, so always is safety first.
Formal electrician: work tends to be hands-on (and, of course, brain), repair and electricity-related equipment.
For example: lighting, lathe, sound, electric stove and so on.
Work focuses on hands-on installation, commissioning or maintenance of electrical equipment.
Electrical Engineer: The work tends to use one's mind (of course, one must also do it by hand). The work of electrical engineer is mainly the formulation of electrical construction plan. Electrical engineer needs to deal with the general quality problems in the construction process in time, so as to design drawings, develop new products and new processes, guide production, debug, supervise and inspect the electrical construction on the construction site, install and debug electrical equipment on the site, analyze and deal with on-site faults and other related equipment.
electrical engineers and electrician technicians:
Electrician: Personnel engaged in the installation, commissioning, maintenance and repair of mechanical equipment and electrical system circuits and devices.
Electrician technician certificate: professional qualification certificate for working as an electrician technician.
Electrical engineer: refers to engineers in the fields of electric power, electrical, electrical equipment, electrical automation, mechatronics, mechatronics, etc. It is a professional title, which is different from electrical technician, assistant electrical engineer and senior electrical engineer.









 

 

What is the difference between the two?


1, electrical engineers belong to the sequence of engineering and technical personnel, with technical title certificate; Electrician technician belongs to the sequence of engineering and technical workers, with grade certificate;
2. Electrical engineer belongs to the intermediate title of engineering and technical personnel sequence; electrician technician belongs to the high technical level of engineering and technical workers, which is equivalent to the former;
3, electrical engineers focus on theoretical knowledge; electrical technicians focus on practical operation ability;
4, the classification and surface of electrical engineers are much wider;
5, the work is not the same
The level of culture is different. Electrical engineers are generally trained in higher education systems for professional goals. The electrician technician is generally a lower cultural level of professionals, engaged in the level of work is generally poor;
7, the issuing unit is different. Electrical engineer is a professional and technical qualification, belongs to the intermediate title, the issuing unit is the personnel bureau or the personnel department, belongs to the cadre series, electrician belongs to the vocational skill qualification, belongs to the intermediate vocational skill, the issuing unit is the labor bureau, belongs to the worker series.
One is the professional qualification of skilled electrician and the other is the certificate of professional title of electrical engineering design and management level. One is for front-line skilled workers, and the other is for high-end talents in the design, manufacturing, and management of the industry. What if you change from an electrician to an electrical engineer?
have the [ability characteristics]]
1, can use the computer for PLC control programming and debugging.
2, can use the computer to draw CAD electrical principle drawings.
3, can according to the design requirements of the drawings, skilled use of electrical tools, equipment electrical circuit wiring, installation.
4, according to the requirements of mechanical and electrical system control, on-site programming, debugging.
5, according to customer requirements, quickly design solutions.
Advanced Level 1: Growth Stage
1, learning programming software: master one or many kinds of PLC programming software and products. For example: CODESYS, CPX-CEC, CECX, CECC
2, electrical CAD drawing software learning: according to the customer's mechanical and electrical system control requirements, according to industry standards to design the system electrical schematic diagram. For example: EPLAN
3. Touch screen software programming configuration: high-end man-machine interface gives customers a high-tech feeling. For example: CDPX, Design Studio
4. Electrical control cabinet line installation
5. On-site debugging: analyze the cause of system failure and eliminate the failure. The need for long-term practice accumulation, the need for constant diligence and love of industrial control industry.
To move towards the position of a real electrical engineer, you need to have the first three basic abilities. When the newcomer first entered the factory, he did not know how to start to understand the equipment control principle, PLC programming was not skilled, he could not find a component model on the Internet, and he could not understand the electrical drawings for more than half a month. In this way, he would appear and want to change his working environment for one year or even half a year.
Therefore, if you want to engage in the industrial control industry, you must be firm in your choice, "find the right way, take the right medicine", and be cruel to yourself.
Advanced Level 2: Ability Breakthrough
1. If you are an electrical engineer in your own company, you only need to be familiar with the electrical equipment of your company.
2. If it is to serve customers, it is not enough to be familiar with a PLC product. The more skills you master, the more it is a manifestation of experience and experience.
3, if you want to become a senior electrical engineer, the follow-up also need to learn hydraulic pressure transmission, inverter speed control, servo drive and so on. These can be slowly learned and accumulated in actual work projects.
Advanced Level 3: The outstanding stage
1, proficient in the process
For example, in the boiler control system, the drum level is an important control parameter, which reflects the balance between the boiler load and the feed water.
If the liquid level of the steam drum is too high, it will cause steam with water to be unfavorable to the operation of the superheater and affect the separation effect of steam and water; if the liquid level is too low, it will cause damage to the water circulation of the boiler and affect the operation of the economizer, which will easily cause all the water to vaporize and burn the boiler or even explode.
In addition to the normal factor of heating and vaporization, the factors affecting the liquid level of the steam drum also include the fluctuation of steam load and feed water flow. When the load suddenly increases and the pressure of the steam drum suddenly decreases, the water will vaporize sharply, and a large number of bubbles will appear, forming a "false liquid level".
For this reason, in the design of the control scheme, the three impulse control of liquid level, steam and water supply is often used. If you do not understand the process and use a simple liquid level control system, once a "false liquid level" occurs, it will affect production and even cause danger. Therefore, automation engineers must work hard on the process and be proficient in the process.
2) Choose the right network
For an automation project (especially large-scale control system), the choice of network is very important, and even some people put forward the concept of "network is the controller", so we should be familiar with all kinds of industrial bus and Ethernet protocol.
First, the network must be open to facilitate the integration of different devices and the expansion of future systems;
Secondly, the form of the network is selected for the transmission performance requirements of different network levels, which must be carried out on the premise of a deeper understanding of the protocol and mechanism of the network standard;
In addition, the network standards used at different levels are determined by taking into account specific issues such as system cost, equipment compatibility, and field environmental applicability. The performance of a real-time system can be measured from three aspects: time, reliability and application object.
3. Master the principle of PLC scanning
Compared with other control equipment, the most important feature of PLC is "scanning".
After the PLC is powered on, the program scan and I/O scan are automatically repeated, that is, the three stages of input sampling, user program execution and output refresh. The completion of the above three phases is called a scanning cycle.
During the input sampling phase, the PLC sequentially reads in all input states and data in a scanning manner and stores them in the corresponding cells in the I/O image area.
After the input sampling is completed, it is transferred to the user program execution and output refresh stage. Even if the input state and data change, the state and data of the corresponding unit in the I/O image area will not change.
During the execution phase of the user program, the PLC scans the program (ladder diagram) sequentially from top to bottom, left to right, and refreshes the state of the corresponding units in the RAM storage area or I/O map area according to the results of logical operations.
In the output refresh stage, according to the corresponding state and data in the I/O image area, all the output latch circuits are refreshed, and then the corresponding peripherals are driven by the output circuit. At this time, it is the real output of PLC.
It can be seen that the process and results of PLC program control are different from the relay logic circuit, especially when it comes to the order of steps and the capture of pulse signals, which are closely related to the scanning principle of PLC. In practice, a large number of procedural problems are derived from this, often there will be incredible results. Therefore, the design of PLC program, must be proficient in the basic principles of PLC.
4. Strive for structured programming
It is the goal of every program designer to comprehensively improve the quality of the program, improve the programming efficiency, and make the program have good readability, reliability, maintainability and good structure.
IEC61131-3 is a standardized programming language for industrial control introduced by the International Electrotechnical Commission (IEC) in 1999. It has the characteristics of openness, portability, structured programming and structured data, error detection and error correction capabilities, and is suitable for PLC programming.
Structured program design is used to facilitate the construction of programs (especially complex programs), multi-person design, debugging, and software management. Although the idea of software engineering has been accepted by most programmers, it is not easy to translate this idea into conscious behavior in the software development process.
5. Pay attention to anti-interference measures
The automation system is used in harsh industrial sites, and anti-interference measures are particularly important. In practice, there are often cases of debugging failure or even equipment damage due to interference. The interference of automation system has the following three types of sources:
(1) Space radiation interference;
(2) Interference introduced by external lines of the system, including power lines, signal lines, grounding systems, etc;
(3) Electromagnetic radiation and line interference within the system.
In response to these disturbances, the following measures shall be considered in the implementation of the project:
(1), in the system structure design and equipment selection, fully consider the environmental adaptability and electromagnetic compatibility;
(2) Adopt power supply with excellent performance to suppress the interference introduced by the power grid;
(3) Reasonable selection and laying of cables and wires;
(4) The isolation device or filter device is adopted on the hardware;
(5), software to take measures to improve reliability, such as digital filtering, timing correction reference point potential, information redundancy, etc;
(6), the correct choice of grounding mode, generally use a point grounding and series grounding.
Now you know why there is only a three-word difference between electricians and electrical engineers, but the salary gap is far from it. If you give, you will get something in return!