The demand for electronic control unit (ECU) testing is increasing year by year. Due to the obvious trend of integration of ECU, electronic components and electronicization in automotive mechanical systems, the number and control items of ECU components in automobiles have increased greatly, and the complexity of functions has also increased day by day, making ECU testing requirements very ardent. Guo Huangzhi, marketing manager of US National Instruments, said that due to the accelerated introduction of electronic technology in automotive systems, the in-vehicle control function has attracted much attention, which has led to a surge in the demand for automotive ECU testing. Guo Huangzhi, marketing manager of American National Instruments (NI), said that in the past, there were at most two or three items controlled by automobile ECUs, such as basic functions such as gasoline volume, exhaust control, and car acceleration and deceleration. However, as consumers expect car functions More and more, the ECU tasks given by car manufacturers are also increasing. Taking the brake system as an example, including sports, fuel-saving or power-saving modes, or electronically controlled gear shifting and self-shifting to artificial hand shifting systems, etc., the demand for ECU testing has begun to rise. Because the ECU is a component specifically used to control the engine, it relies heavily on the hardware in the loop (HIL) technology to assist in the test. The ECU HIL test simulates the state of the real engine through the hardware and software system environment , Allowing the ECU to achieve safe operation in the car by controlling the exercise of the fake engine. Guo Huangzhi pointed out that both PXI and CompactRIO platforms of National Instruments can conduct ECU HIL testing; if the test project is complex, PXI machine can be selected. The instrument has a large model, many test channels, and a large measurement flexibility; The CompactRIO platform has the characteristics of immediacy, low power consumption, and built-in field programmable gate array (FPGA), which are suitable for harsh test environments. On the other hand, Guo Huangzhi mentioned that the test products of American National Instruments are mainly used in a wide range of applications, that is, one machine can be applied to different application fields; the biggest difference between the company ’s ECU equipment and its competitors is that ECU R & D Through the LabVIEW software interface, personnel can develop ECU-specific testers on general-purpose instruments and input / output (I / O) modules, thereby achieving the purpose of customization. Guo Huangzhi emphasized that many instruments on the market today can also be designed with software and hardware to implement customized ECU measurement functions. However, because these products mostly write programs in low-level languages, it is difficult to achieve the measurement purpose or spend too much time. , Leading to longer time to market and shortened product life; LabVIEW can use high-level language to write test programs, which will help automotive manufacturers improve the competitiveness of ECU products.
Measurement data can be sent via PufangTech`s RS485 Wireless Modem for point to point or point to multi-point data communication with a range of 1km to 50km. It provides a transparent half duplex radio serial connection wirelessly operating in VHF/UHF frequency band.
The parameters of the wireless modems can be configured through the local serial port using Windows based software. The individual configuration parameters can be stored on PC for future use.
PufangTech wireless modem equipped with LEDs which enable the operator to see at a glance the status of the modem and its interfaces. The LEDs provide the operator with a quick visual check and if the modem is in normal operation, configuration or alarm status.
RS485 Wireless Modem is developed for remote supervision and control applications. Typical target applications such as slave stations of oil, gas and water pipelines, environmental monitoring, street light control, wastewater pumping stations and OEM applications.
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