Vehicle speedometer

1、 Working principle

　　Vehicle speedometerAccording to the Doppler effect, by emitting radio waves to the vehicle, when the energy of the waves hits the vehicle, a small portion of the wave energy returns to the radar to set up the antenna; According to the frequency of the return signal, the vehicle speed can be measured, supporting dynamic speed measurement on board.

2、 Usage scenarios

1. Set up temporary checkpoints on roads, bends, schools, or accident prone sections without fixed speed measuring equipment to quickly measure the speed of passing vehicles.

2. Speed up passing vehicles on roads in suburban mountainous areas to ensure the safety of road traffic.

3. The speed of moving objects within the factory area, such as forklifts, winches, etc., to ensure production safety and efficiency.

4. Non contact measurement, where it is not allowed or necessary to install any sensors or markers on the target.

3、 Product Features

1. Overspeed setting: Supports setting overspeed values, with two modes of automatic and manual sampling.

2. Can display overspeed ratio: (real-time speed - limited speed)/limited speed.

3. Can display overspeed: the speed value reached by the target during the measurement process.

4. It can display the last three overspeed data: overspeed time and overspeed value.

5. Language: Supports switching between Chinese and English.

6. Historical data: Historical data can be queried and exported.

4、 Technical parameters

Measurement principle: Doppler effect

Radio frequency: 24GHz (not easily affected by rainy and foggy weather)

Transmission power: ≤ 20dBm

Transmission standard power: 10mW

Launch angle: 22 ° x 8 °

Range: 1-240km/h

Resolution: 0.1km/h

Error: ± 1km/h

Detection direction: positive indicates movement close to the radar, negative indicates movement away from the radar

Measurement distance: greater than or equal to 200m

Angle compensation: Automatic vertical angle compensation

Charging limit voltage: 12.6V

Battery capacity: 3600mAh

Working hours: ≥ 10 hours

Shell material: ABS resin

Instrument weight: 504g

Operator: 1 person (can measure handheld or place on a tripod)

Note:Vehicle speedometerNot applicable in the following scenarios

1. Scenarios that require high-precision, long-term continuous monitoring.

2. Multi objective or dense target environment. For example, dense traffic with similar speeds or multipath reflection environments.

3. Unable to provide clear target reflections in the scene. For example, small or non-metallic targets and weather effects.

4. Difficult to operate or dangerous scenarios.