With collision warning capability, Lobula giant movement detector (LGMD) is simplified to design circuit in parametric method, and the parameters can be configured online by RS232. A collision warning sensor is designed based on LGMD module and from FPGA synthesis report, the pixel frequency is as much as 178MHz. A test system are also designed for verification. Under real-time mode, the sensor can generate warning alarm correctly using inputs from camera while under test mode, stimulated by test video the sensor’s membrane consists with software simulation, which demonstrates the designed sensor carries on the previous related work in software. The test system can also be used as a hardware accelerator to boost LGMD algorithm.