Imaging device and temperature control device and temperature control method thereof

Abstract

The invention discloses an imaging device and a temperature control device and a temperature control method thereof. In one embodiment of the invention, the temperature control device can comprise: arefrigeration element which is fixed on a closed cavity wall of a lens mechanism in the imaging device; a heat exchanger which is provided with a cold end face, wherein the cold end face is communicated with the internal space of the closed cavity; a first temperature acquisition element which is configured to acquire the temperature of the cold end surface of the refrigeration element; a second temperature acquisition element which is configured to acquire the temperature of the outer surface of the lens; and a controller which is electrically connected with the refrigeration element, the first temperature acquisition element and the second temperature acquisition element, and is configured to supply power to the refrigeration element according to the temperature of the cold end surface of the refrigeration element and the temperature of the outer surface of the lens, so that the temperature of the cold end surface of the refrigeration element is lower than the temperature of the surface of the lens. The embodiment of the invention can effectively prevent the inner side of the imaging device lens from fogging.

Description

technical field [0001] The present application relates to the field of imaging technology, in particular to an imaging device, a temperature control device, and a temperature control method thereof. Background technique [0002] In fields such as intelligent driving, the lens of the imaging device is exposed to the outdoor environment for a long time. When the speed of the vehicle equipped with the imaging device is changed (such as the acceleration process from stationary to normal speed), due to the effect of high-speed airflow, the temperature outside the lens of the imaging device will drop rapidly in a short time, so that the outside of the lens and the inside of the lens A certain temperature difference is formed, and then a short-term fogging phenomenon appears on the inside of the lens. Fogging will make the lens blurred, which will cause problems such as abnormal picture quality or even complete disappearance of the picture. Intelligent driving has high requirement...

AI Technical Summary

Problems solved by technology

Fogging will make the lens blurred, which will cause problems such as abnormal picture quality or even complete disappearance of the picture. Intelligent driving has high requirements for real-time and clarity of images collected by imaging devices. Once the images collected by imaging devices are clear If the speed is not enough or the delay of image transmission exceeds the upper limit of the ms level, it will lead to abnormal decision-making of the intelligent driving function, and even affect the normal use of the intelligent driving function

[0003] At present, the main way to solve the problem of lens fogging in imaging devices is to coat the inner surface of the lens, but the cost of the film itself is relatively high, the technical standard of the coating process is also relatively high, and the anti-fogging effect of the coating method is not good. Imaging devices that are not suitable for applications such as visual inspection of industrial robots and mobile image acquisition

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