Automotive electronics is the floorboard of the car body and car automobile electronic control unit, including engine control system, chassis control system and body electronic control system, such as car as people daily travel transport, automotive electronics is the most important role is to raise the safety, comfort, economy and entertaining, one of the most important is security, of course, once one of the system or components in automobile work is unusual, light vehicle can't start, seriously threaten the safety of life, so, both cars and auto parts manufacturers, before leaving the factory will do strict careful inspection of each component, such as sensors testing, engine test, battery test, the fuse test, etc.,
2. Auto electronic test how to select dc electronic load
Test in the field of automotive electronics related products, need to use a lot of different specifications of the electronic load, or cooperate with relevant software to facilitate rapid completion test and get accurate test data, at the same time, if you use the electronic load can have the function of communication and the communication protocol of open mode, and convenient remote control, and secondary development, would be a perfect choice,
IT8800 electronic load series, the electronic load series combines the test requirements of automotive electronics field a variety of products, from 150 w - 50 kw power range, voltage range up to 1000 v, current range up to 3000 a, is a flexible application, functional electronic load, can satisfy the various needs of automobile electronic test above, and have high cost performance, the following is a nano software for this series of dc electronic load generator test in the automotive electronics industry perfect application in the specific case,
3. Dc electronic load on the generator test application case
When generator test, need the electronic load can from idle to full speed generator is divided into four different projects, the simulation of the generator under various conditions when the car running power performance, in the process of the whole, need real-time observation data, the voltage and current of the traditional load box is completely unable to meet this requirement, and the test data is not accurate, so it is necessary to use electronic load to test, so, why choose this kind of electronic load series for auto generator test? Reason is that it not only fully meet the test requirements, and advantages are very significant,
1. The function description
Any test, the electronic products will have to the requirement of test accuracy and processing speed, and in the test of automobile generator, due to the start of the generator is a process for a short period of time, and in this short period of time, in the interior of the generator and will produce bigger change, in this case, nano engineers of course will focus on sample and record the data rate of testing instruments, the series of electronic load are using the latest CPU control technology and instrument internal sampling rate is higher, the data update rate was quick, the amount of voltage/current speed rate can be up to 50 KHZ, it can also be the resolution of up to 0.1 mV/0.01 mA, so in the test of generator, it can ensure accuracy of the test, at the same time, in the process of test data, such as voltage, current, power etc. real-time display on the instrument panel, convenient real-time observation and record, timely discovery is unusual, the operation of the digital interface and convenient setting test data,
Below for IT8800 dc electronic load series one of the models (power 300 w) :
2. The power of the optional
Generator in the test cars, different test will have different requirements for power, if each of the different power test with different series of products, its functions, operation and other aspects of difference, causes experiment engineers considerable inconvenience, don't look at the electronic load is small, it is just in a range of a type, there are many other models to choose from, Ed, IT8800 electronic load series single way from 150 w to 50 kw power, the power can reach 300 kw. So it can completely cover the broad scope of power, meet a variety of tests, as a result, to equipment selection and experimental operation, has brought great convenience,
3. A variety of work mode
In the test of automobile generator, a generator load performance testing, in which a test, electronic load to simulate generators of different speed, can obtain the perfect test results, the series of dc electronic load has various working modes to choose from, such as for generator load performance testing this item can work in the CC mode, can also work in CV mode, both models can be used to simulate the different rotation speed of generator, so as to help engineers to obtain perfect test results,
4. A List function
In addition to the simulation of the generator different rotational speed, the simulation under each of the different rotating speed through the current of generator is also important experiment project, through the two important experimental data, was able to paint a rotational speed and the curve of the current changes, to find out the relationship of the two, IT8800 series electronic load with the list function, can be directly on the front panel edit current and voltage waveform, simulation of different speed distributed motor current state, the diagram below:
In addition to edit waveform on the panel, of course, can also be controlled by computer, which makes operation more flexible,
5. Simulation of inductive or capacitive load
Usually car generator with the load is not pure resistance load, may be inductive or capacitive electronic load, IT8800 series electronic load increases the CZ model, can satisfy the requirements of simulation inductive or capacitive load,
6. A variety of interfaces to support rapid communication
Automobile generator in the moment when they produce a large current, with electronic load on the computer operation, if communication is slow, it is difficult to crawl to the instantaneous large current data, IT8800 series electronic load series, in the back of it there are a lot of standard communication interface, as shown in the figure below:
These standards include the RS232 communication interface, USB, GPIB and Mr.net, etc., can support various communication functions, communication is the fastest time can reach 5 ms, could collect the generator starting instantaneous large current status, and the more data in the process of work,
7. More application advantages
IT8800 series electronic load with OVP/OCP/OPP/OTP and polarity reverse connect protection function, can prevent the damage in the process of test test equipment, it is also convenient for secondary development, the computer can be in the process of test voltage and current status in the form of curve drawing, convenient for later analysis data,
4. Summarize
Nano test scheme of software research and development of the generator, is from IT8800 dc electronic load series one of the application in automobile electronic industry test case, in addition to the tests for the generator can realize programmable, automatic monitoring, complete testing, and other functions, the dc electronic load throughout the automotive electronics industry, and other electronics industry related tests have a wide range of applications, and showed the same obvious advantages,