Specialized courses mainly include: automatic control principle, process control principle, advanced control principle, instrument and its automation, etc. These are the most important.
The basis of learning professional courses well is the number of electricity, analog electricity, high number and linearity in public courses.
Hehe, come on.
Hope to adopt.
Question 2: What are the major of instrumentation? Instruments and meters are the comprehensive products of many kinds of science and technology, which are widely used, constantly updated and classified. According to the purpose and usage, there are mainly measuring instruments, automobile instruments, tractor instruments, navigation instruments, aviation instruments, navigation instruments, driving instruments, radio test instruments, carrier microwave test instruments, geological exploration test instruments, building materials test instruments, earthquake test instruments, geodetic survey instruments, hydrological instruments, timing instruments, agricultural test instruments, commercial test instruments, teaching instruments, medical instruments, environmental protection instruments and so on. Classification of instruments and meters of mechanical industrial products There are thirteen categories of instruments and meters belonging to mechanical industrial products, including industrial automation instruments, electrical instruments and meters, optical instruments, analytical instruments, laboratory instruments and devices, material testing machines, meteorological instruments, film machinery, photographic machinery, copying micro-processing machinery, instrument components, instrument materials and instrument technology equipment. They are universal, mass-produced, or an essential foundation for the instrument industry. According to different characteristics, various instruments can be further divided into several subcategories or subcategories according to different characteristics such as functions, detection and control objects, structures and principles. For example, industrial automation instruments can be divided into detection instruments, loop display instruments, adjustment instruments and actuators according to their functions; Among them, measuring instruments are divided into temperature measuring instruments, pressure measuring instruments, flow measuring instruments, liquid level measuring instruments and mechanical measuring instruments according to the measured physical quantities. Temperature measuring instruments are divided into contact temperature measuring instruments and non-contact temperature measuring instruments according to measuring methods; Contact thermometers can be divided into thermoelectric type, expansion type and resistance type. Other classification methods The classification methods of other instruments and meters are similar, which are mainly related to the development process, usage habits and classification of related products. There is no uniform standard for the classification of musical instruments, and the naming of musical instruments is similar. In practical work, we often divide instruments into two categories: automatic instruments and portable instruments. Automatic instrument refers to the instrument that needs to be fixed on the site, also known as field instrument or dial instrument, which needs to be used in conjunction with other equipment to complete one or more functions; Portable instruments are used alone, sometimes called detection instruments, and are generally divided into desktop and handheld. There is also a classification of instruments, called primary instruments and secondary instruments. The primary instrument refers to the part that directly feels the measured signal, such as the sensor, and the secondary instrument refers to the part that amplifies, displays and transmits the signal.
Question 3: Which major does the musical instrument belong to? Some colleges and universities have instrumentation major, which belongs to instrumentation major.
Some colleges and universities also classify instruments as automatic control or electronic technology.
Question 4: What is the major of instrument manufacturing?
Question 5: What is the abbreviation of thermal instrument automation? Now in heavy industrial enterprises, thermal instrumentation is basically an independent type of work, or combined with automation.
Question 6: What is the musical instrument major in vocational high schools? Don't go to vocational high school. Vocational high schools really have no future now. You should go to a technical school to learn Sichuan food. Sichuan cuisine is developing well now.
Question 7: What do you do during the internship of instrument major? I mainly study four parameters: pressure, flow, liquid level and temperature. First of all, we should understand them, and it will be much easier to learn when we understand the principles. Let me just say a few important things related to technology! 1, spring tube pressure gauge pop-up tube, also known as Bourdon tube, is a tube bent into arc, spiral or S shape, which is oblate or oval. The short axis direction of the cross section is consistent with the radial direction of the elbow. When the pressure inside the spring tube is higher than the pressure outside the tube, the cross section of the tube tends to be rounded because the inner surface area in the short axis direction is larger than that in the long axis direction and the force is greater. That is, the short axis becomes longer and the long axis becomes shorter, resulting in elastic deformation. At this time, the free end must move in the direction of straightening the pipe. When the elastic force generated by deformation and the acting force generated by pressure reach balance, the deformation stops. The displacement generated by the free end drives the amplification mechanism through the lever, so that the pointer deflects at a certain angle, and the measured pressure value is indicated by the dial. 2. Thermocouple Thermocouple thermometer is the most widely used thermometer at present. Thermocouple thermometer is an electric temperature measuring instrument, which usually consists of thermocouple, thermocouple cold end temperature compensation device (or element) and display instrument, connected by wires. Thermocouple temperature measurement principle Thermocouple is formed by welding one end of two different conductor or semiconductor linear materials A and B, and A and B are called hot electrodes (or thermocouple wires). The welding end is placed at the measured temperature t, which is called the hot end (or measuring end and working end) of the thermocouple; The non-welded end is called the cold end (or reference end or free end), and the cold end is placed outside the measured object in the environment with the temperature of t0. If the two cold ends of a thermocouple are also connected into a closed loop, as shown in Figure 2- 1, when the temperature of the hot end and the temperature of the cold end are not equal, that is, t≠to, current flows in the loop, indicating that electromotive force is generated in the loop. The electromotive force caused by the different temperatures at the two ends of the thermocouple is called thermoelectric (kinetic) potential, and the above phenomenon is called thermoelectric effect or Seebeck effect. Thermocouple uses thermoelectric effect to measure temperature. Further research shows that thermoelectric potential is composed of contact potential and thermoelectric potential. 3. 1 15 1 differential pressure transmitter When pressure is applied to the isolation diaphragm, the filling liquid transfers the pressure to the central filling liquid, and the central filling liquid transfers the pressure to the sensing diaphragm of the δ chamber sensing center. The sensing diaphragm is a tensioned elastic element, and its displacement changes with the pressure difference. Displacement is proportional to pressure; Capacitor plates at both sides detect the position of the sensing diaphragm; The capacitance difference between the sensing diaphragm and the capacitor plate is converted into corresponding current, and the DC current of 4-20mA is output through the output circuit. 4. Electric valve positioner The electric valve positioner is designed and works according to the principle of force balance, and its working principle is that the current signal developed on the basis of pneumatic valve positioner controls the valve positioner. When the current signal from the electric regulator is input to the coil of the torque motor assembly, a magnetic field is generated in the air gap of the torque motor, which works together with the magnetic field generated by the permanent magnet to make the armature generate a force to the left. The main lever (armature) rotates ⒂ around the fulcrum, and the baffle is close to the nozzle. After the nozzle back pressure is amplified by the amplifier, it is sent to the air chamber of the thin film actuator, so that the valve stem moves down and drives the feedback rod to rotate around the fulcrum. The feedback cam connected to the same shaft rotates counterclockwise in the main direction, and the auxiliary lever rotates around the fulcrum through the roller. When the feedback spring ⑾ is stretched and the tension of the spring on the main lever is equal to the torque acting on the main lever by the torque motor, the mechanical lever system reaches a balanced state. At this time, a certain signal current corresponds to a certain valve position. The spring is used to adjust the zero position. The above mode of action is positive. If you want to change the action mode, just flip the cam, and the direction A will become the direction B, and so on. The so-called positive-acting positioner means that the signal current increases and the output pressure also increases; The so-called reaction positioner means that the signal current increases and the output pressure decreases. As long as the forward actuator is equipped with a reaction positioner, the action of the reaction actuator can be realized; On the contrary, as long as a reaction actuator is equipped with a reaction positioner, it can realize the action of a positive actuator for reference.
Satisfied, please adopt.
Question 8: What books are there about musical instruments when studying musical instruments? Go to the online bookstore of Chemical Industry Press, where there are many professional books on instruments.
Applicable are Chemical Automation and Instrument, Instrument Maintainer, Chemical Measurement and Instrument, Instrument Workbook, etc. These are comprehensive knowledge books about musical instruments.
Question 9: What exactly does the instrument industry do? Instrument is a tool or system used to measure and control various parameters (variables) in various processes. The work of the instrument industry includes manufacturing, sales, research and development, design and maintenance.
Usually the so-called instrument industry work refers to the instrument maintenance work and technical management work in the factory.
Question 10: What about the instruments? Both industries are good. Now industrial and mining enterprises need such talents. Personally, I feel that the direction of automation is better, but it is only a personal suggestion. Different regions may have different requirements for these two industries. If there is someone or money at home, it is better to enter an institution such as an automation institute. I don't know what your internship stage is, so now I will take the time to get in touch with work and submit more resumes. If I am close to home or school, I'd better go to work directly. Good luck!