SF

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gas infrared imaging leakage detection technology has such advantages as non-contact and high sensi-tivity.However

for some scenarios with complex observation environment and more background interference

it is dif-ficult to get ideal effect for SF

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gas leakage detection by the direct use of the infrared thermal imaging leakage detec-tor.In view of above situation and on the basis of practical scenario

two types of convenient and feasible leakage ef-fect strengthening methods are proposed in this paper

related experiments are designed and completed with pu

rposeof quantitatively evaluating its effectiveness improvement.Firstly

the joint detection of negative corona detectiontechnology and infrared imaging leak detector is used to improve application range of SF

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gas leakage detectionthrough the complementation of the two kinds of methods in different application scenarios.Secondly

for specificscenes

the self-heating metal plate is used to improve the background and surrounding temperature so to improve ef-fectively the infrared imaging effect.The method in this paper has a strong engineering value and a great innovation.And the proposed method is verified by the experiment and field scene cases.