The electronic information device is installed in the cargo and generates ultrasonic sound so that the animal can not jump on the road of the vehicle being driven. The device comprises a simplified drive circuit for generating an electrical impulse of the form of a fine wave having a peak-to-peak voltage. The driver periodically and sequentially increases and then generates a square wave having a periodic reduction and a sequentially decreasing frequency. The coupling transformer transforms the square wave into a sinusoidal voltage with a high peak-to-peak voltage. Due to the sinusoidal voltage, the piezoelectric transducer will not overheat and will oscillate periodically after the periodically increasing frequency And emits a strong ultrasonic sound. The ultrasonic shimmering effect causes the animal to be confused without harming the animal in order to prevent the animal from jumping on the road.
展开▼