The OMS7 optical sensor developed by Sensoric Solutions combines non-contact, optical, and inertial measurement technologies to measure vehicle speed, slip angle, pitch angle, roll angle, acceleration, angular velocity, etc Widely used in longitudinal and transverse dynamics, tire and braking performance, indoor experiments, racing, ADAS testing and other scenarios.
1、 Advantages of the product itself
·Higher speed testing range
·High measurement resolution
·High measurement accuracy
·High distance resolution
·Wide acceleration range
·High sampling frequency
·Low signal delay
·Better wet and slippery road performance
·Low power consumption
·Small volume
·Lightweight
·Sensor IP68 waterproof, ECU IP40 waterproof, not afraid of rainy situations
2、 Differences with Friendly Products
| Comparison of parameters between OMS7 and other competitors | ||
| Parameter | OMS7 | Friendly products |
| Speed | ||
| Range [km/h] | 250/350/450 | 250/400 |
| Angle | ||
| Measurement resolution | 0.003 ° | 0.01 ° |
| measurement accuracy | <0.1 ° @ ± 10 ° | ≤ 0.2 ° |
| Distance resolution [mm] | ≈ 0.6 | ≤ 1 |
| Placement height [mm] | 300 ± 150 | 350 ± 100 |
| Acceleration | ||
| Range [g] | ± 20 | ± 18 |
| Sampling frequency [Hz] | 1000 | 500 |
| Signal delay [ms] | 4.5 | 6 |
| Power consumption [W] | <25 | 35 |
| Sensor size [mm] | 95×65×40 | 118×70×45 |
| ECU size [mm] | 155×125×60 | 175×125×95 |
3、 Hardware composition and connection
The hardware equipment required for measurement is as follows:
| Number | Device Name | Quantity |
| 1 | OMS7 optical sensor | 1 unit |
| 2 | OMS7 ECU | 1 unit |
| 3 | Side Mount S1 side mount bracket | 2 pieces |
1.Install the bracket on the side, front, and rear of the vehicle first.
2. Install the OMS7 sensor onto the bracket, whether it is installed on the side or front and rear, ensuring that the orientation is consistent with the direction of the car's forward movement.
OMS7 installed at the rear of the car
OMS7 installed on the side of the car
3. Connect according to the diagram:
4. Modify the IPv4 Ethernet cable just inserted on the computer:
5. Open the browser, enter 192.168.1.10, and open the settings interface to set and use it.
4、 Comparison chart of output with competitor products
Comparison of measurement results of vehicle speed in wetlands:
The red line in the picture is OMS7; The blue line is a product of a friend; The green line represents ADMA
Based on GNSS, ADMA is not affected by splashing on slippery surfaces and can serve as a benchmark for comparison. From the above figure, it can be seen that the speed measured by OMS7 is closer to ADMA, and the noise is lower than that of friendly products. Comparing the reference line of the ADMA benchmark, it can be seen that OMS7 has better performance in wetlands.
Comparison of measurement results of lateral inclination angle on dry ground in a straight line:
The red line in the picture is OMS7; The blue line is a product of a friend; The green line represents ADMA
The curve of OMS7 is more in line with the ADMA baseline, and the smoother curve also reflects the lower noise level of OMS7. When the roll angle fluctuates greatly, OMS7 can also closely adhere to ADMA without excessive deviation.
Based on the above comparison, it can be seen that the measurement of roll angle and velocity of OMS7 has higher accuracy and stability, and in both graphs, it shows the low noise characteristics and smoother curves of OMS7, which are beneficial for providing more accurate data analysis in the future.