CN203177971U - A calibrating device of an infrared thermal imager - Google Patents

Abstract

The utility model relates to a calibration device for an infrared thermal imager, which comprises a constant temperature box, an adjustment bracket, a computer, a monitor, a radiation source and a reference standard for measuring the temperature of the radiation source. The computer is connected to the thermal imaging camera and the monitor, and the radiation source is set facing the thermal imaging camera. Compared with the prior art, the utility model has the advantages of convenient calibration and high calibration precision.

Description

A calibration device for an infrared thermal imager

technical field

The utility model relates to a calibration device, in particular to a calibration device for an infrared thermal imager.

Background technique

Thermal imaging cameras can also be used to detect bad contacts in electrical equipment, as well as overheated components before they can cause catastrophic short circuits and fires.

Statistics show that more than 25% of the common defects in all electrical equipment have the characteristics of heating, which are often caused by poor contact. Thermal imaging products are able to identify thermal hazards at all connection points for all directly visible equipment. For those parts that cannot be directly seen due to shielding, thermal hazards can be found based on the conduction of heat to external components. Thermal imaging products can also easily detect circuit overloads or unbalanced three-phase loads. If infrared thermal imaging technology is not used, poor contact and overheating of equipment can only be found through disassembly inspection and cleaning of joints, which is inefficient. Of course, there is no substitute for thermal imaging products for routine testing of circuit breakers, conductors, busbars and other components.

However, since the infrared thermal imager involves more sensitive components, it needs to be regularly checked and calibrated to ensure that it can work normally, but there is currently a lack of a convenient, quick, and relatively standardized calibration equipment.

Utility model content

The purpose of this utility model is to provide a convenient and fast calibration device for infrared thermal imagers in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions:

A calibration device for an infrared thermal imager, comprising a constant temperature box, an adjustment bracket, a computer, a monitor, a radiation source and a reference standard for measuring the temperature of the radiation source, the infrared thermal imager to be calibrated is arranged on the adjustment bracket, and Placed in a constant temperature box, the computer is connected to the thermal imaging camera and the monitor, and the radiation source is set facing the thermal imaging camera.

The adjustment bracket is a bracket capable of rotation and three-axis movement.

The radiation source is a cavity black body.

The reference standard is a platinum resistance thermometer, a thermocouple thermometer or a radiation thermometer.

Compared with the prior art, the utility model can quickly adjust the imaging target of the infrared thermal imager by adjusting the bracket, and display the collected images of the infrared thermal imager by a high-resolution monitor through the computer, and combine the temperature of the radiator as the Reference, so as to quickly judge that the sensitive components in the infrared camera are qualified, and the calibration is fast and more standardized.

Description of drawings

Fig. 1 is the structural representation of the utility model.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example

As shown in FIG. 1 , a calibration device for an infrared thermal imager includes a constant temperature box 1 , an adjustment bracket 2 , a computer 3 , a monitor 4 , a radiation source 5 and a reference standard. The thermal imaging camera 6 to be calibrated is set on the adjustment bracket 2 and placed in the incubator 1 for ambient temperature adjustment. Since the adjustment bracket can be rotated and moved in three axes, the imaging target of the thermal imaging camera can be quickly adjusted. The computer 3 is connected to the thermal imaging camera 6 and the monitor 4 to collect imaging information and display it through a high-resolution monitor. The radiation source 5 can be a cavity-type black body, which is set facing the thermal imaging camera 6, and its temperature is calibrated by a reference standard as a calibration reference. In order to ensure the accuracy of the calibration, the reference standard can use platinum resistance thermometers, thermocouple thermometers or radiation thermometers according to different situations.

Claims (4)

1. the correcting device of a thermal infrared imager, it is characterized in that, comprise constant temperature oven, adjusting support, computing machine, monitor, radiation source and the reference standard that is used for the measuring radiation source temperature, thermal infrared imager to be calibrated is located to be regulated on the support, and place in the constant temperature oven, described computing machine connects thermal infrared imager and monitor, and described radiation source is over against the thermal infrared imager setting.

2. the correcting device of a kind of thermal infrared imager according to claim 1 is characterized in that, described adjusting support is for being rotated the support with three movements.

3. the correcting device of a kind of thermal infrared imager according to claim 1 is characterized in that, described radiation source is the cavate black matrix.

4. the correcting device of a kind of thermal infrared imager according to claim 1 is characterized in that, described reference standard is platinum-resistance thermometer, thermocouple thermometer or radiation thermometer.

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