With the rapid development of new energy vehicles, the demand for testing in the automotive industry is also increasing. It is often necessary to simultaneously perform a series of test requirements such as battery charge and discharge analysis, driver efficiency analysis, and motor performance analysis. Simultaneous measurement has become a basic requirement. How to achieve it?
In the evaluation of electrical parameters in industrial sites, the test requirements are often varied and complex. The most typical requirement is the simultaneous testing of multiple electrical parameters. For example, in the field of motor testing, the early evaluation methods only need to accurately measure the three phases of the motor. Voltage, current, and power are sufficient. Nowadays, motor measurement has basically entered a new era. In addition to the early testing requirements, even control characteristics analysis is required to test the transient waveform of the control process and analyze the control response time. And other transient parameters. This requires the synchronous test of the motor's various voltages, currents, and speed torque of the torque sensor. If a more complex system is encountered, more and more test points will be required. How to complete multi-channel synchronization? Measure it?
Zhiyuan Electronics' single PA5000H/6000H/PA8000 power analyzer supports seven measurement channels. Each measurement channel can be configured as a motor card or power card. If there are more than 7 channels of measurement requirements, you can use multiple power analyzers to solve the connection. If you turn on the multi-machine synchronous measurement mode, you can expand any measurement channel. What is multi-machine synchronization? Zhiyuan Electronic's PA Power Analyzer can “plot†the number of measurement channels you want with any PA. The “measured†measurement channels not only can maintain strict time synchronization with the measurement data, but also operate synchronously. This is PA's Multi-machine synchronous measurement mode.
Taking 4 machine cascades as an example here, a total of 28 measurement channels can be expanded. This is basically sufficient for general measurement applications, but the PA supports up to 128 instruments connected at the same time, that is, it can support up to 896 channels simultaneously. measuring.
Figure 2 Example of 4 cascaded examples
In the multi-machine synchronous measurement mode, the user can set the device as master slave. All operations (such as range configuration, HOLD, storage, etc.) on the master will be automatically synchronized to all connected slaves at the same time. In the case of multiple slaves, changing the roles of the master and slave may be very tedious. The PA supports the automatic switching of the master to the slave when any slave is set as the master.
Figure 3 Synchronous measurement setup
Thanks to the FPGA's powerful real-time processing capabilities, data synchronization and time synchronization are all based on the underlying FPGA hardware. In the multi-machine synchronous measurement mode, all channels are synchronously acquired, while operations on the host can distribute the host configuration parameters to each A slave or a slave specifies that the simultaneous measurement of multiple machines is as simple as operating a machine. Such a convenient operation, such a powerful feature, look forward to your use.
Figure 4 synchronous measurement support synchronous storage
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