Summary of Contents for Dahua Technology BF 5421
- Page 1 Thermal Camera Installation Guide (BF 5421) V1.7 Zhejiang Dahua Technology Co., Ltd...
- Page 2 Preface Summary The temperature of all materials is higher than absolute zero (- 273.15 ℃) and radiates electromagnetic wave continuously. The thermal imaging camera collects the infrared radiation energy emitted by the measured objects, and establishes the accurate corresponding relationship between the target energy and temperature through complex temperature measurement algorithm and blackbody temperature measurement calibration and other processes, so as to realize the temperature measurement function of human body.
- Page 3 Change Record Revision date Version number Creater Reviser 2020.01.27 V1.0 房圣东 2020.01.28 V1.1 许芳荣/房圣东 房圣东 2020.01.31 V1.2 房圣东 李静 2020.02.03 V1.3 方璐 房圣东 2020.03.14 V1.7 方璐 房圣东...
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Page 4: Table Of Contents
Content Preface ....................................I 1 Equipment Installation ............................2 1.1 Installation Preparation ..............................2 1.2 Installation Distance................................ 2 1.3 Installation Diagram ............................... 3 1.4 Real Scene Diagram ............................... 3 1.5 Installation Precautions ..............................5 2 General Settings............................... 7 2.1 Equipment Upgrade ............................... 7 2.2 Debugging Of Human Body Temperature Detection Function .............. -
Page 5: Equipment Installation
Equipment Installation Installation Preparation ⚫ Installation Preparation： ◼ 5 meter long tape for distance measurement on site ◼ DC12V adapter, used with camera ◼ Some cable lines ⚫ Product appearance BF5421： Blackbody： Note: the recorded installation guidance video "Dahua indoor human body temperature measurement product installation video (BF3221)", which adopts tripod mode, is applicable to portable indoor installation guidance reference, and other fixed installation needs to be installed in strict accordance with the... -
Page 6: Installation Diagram
(13mm) as an example, the distance between blackbody and camera is 3M, the best distance for temperature measurement is 3M (the straight-line distance between the front of forehead and camera), the best test width at 3m is about 1.3m (about one gate), the forward temperature at 3m will be higher, and the backward temperature will be lower. -
Page 8: Installation Precautions
Sticking foot stickers at the temperature measurement position ⚫ Monitoring picture, the following is the effect of one person in front of the 13mm lens at the 3m position Installation Precautions ⚫ The thermal imaging camera and blackbody are installed on the same side to avoid the occlusion between the camera and blackbody ，... - Page 9 difference, multiple bow type routes can be planned and the area with wind at the door shall be avoided, and the temperature measurement can be conducted after the person reaches the indoor forehead temperature to be stable. ⚫ The black body radiation surface (Note: the radiation surface shall not be touched or dirty) shall be facing the camera irradiation direction, the black body shall be on the left or right side of the thermal imaging picture, and the tripod can be protected by temporary fence.
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Page 10: General Settings
Installation scenarios to avoid Backlight / scene open The direction of people moving is not toward Insufficient light. to the outside the camera. General Settings Equipment Upgrade The new factory version of the program already supports human body temperature detection and does not need to be upgraded. If there is a new iterative process will be notified in the delivery group, please pay attention to the group information in time. -
Page 11: Debugging Of Human Body Temperature Detection Function
Debugging Human Body Temperature Detection Function 2.2.1 Selection of human body temperature measurement intelligent scheme 2.2.2 Blackbody Parameter Setting ➢ Blackbody calibration. Note: the blackbody parameter setting steps are ignored for the scheme without blackbody. When the blackbody is actually set to 35 ℃, there may be two situations on the back of the blackbody, one is the digital tube display (left), the other is the LCD display (right):... - Page 12 Note：For the blackbody display of the LED, just press the bottom‘︿’‘﹀’to adjust the value; for the LCD display device, press the bottom‘<’ to select the value to be adjusted, and then press the bottom‘︿’‘﹀’to adjust the value. After fixing the camera and the blackbody position, make sure that the blackbody is on the right or left side of the image and is not blocked (the best position of the blackbody: put it on the top left or the middle position of the ‘Cross type’...
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Page 13: Drawing Of Human Body Temperature Detection Area
(The rule window of the program after 20200210 is rectangle. The drawing method is as follows: draw the rectangular area along the highlighted edge of the blackbody) Black regular window drawing is no longer the smaller the better. You need to draw the rectangular area along the highlighted edge of the blackbody. - Page 14 be generated when the head temperature of the subject exceeds 37.3 ℃ 1) Face frame size scaling. It can scale the thermal imaging face identification frame. 2) The lower limit of temperature detection can be set: for example, if it is set to 25 ℃, the target below 25 ℃...
- Page 15 Optional compensation mode: 1) mercury meter compensation (default); 2) forehead temperature meter compensation Note: please confirm whether the "adaptive ambient temperature" is consistent with the real ambient temperature on site. If not, please input the real and accurate ambient temperature on site (use a thermometer to measure or point to measure the temperature of the tripod under the blackbody as a reference, as shown in the figure below).
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Page 16: Alarm Temperature Correction
2.2.4 Alarm Temperature Correction Due to the difference of environment, there may be errors in the temperature of the measured person. If more than 5 person samples stand at the best temperature measurement distance and the measured temperature is generally high or low, they can be compensated by temperature correction. -
Page 17: Opening / Closing Function Of Visible Light Face Thermometer
2.2.6 Opening Closing Function Visual Face Thermometer Frame... -
Page 18: Announcements
Open： Close： Announcements The following is for blackbody： ➢ Warning A warning indicates a condition that may cause harm to the user. To avoid personal injury or instrument damage, follow these guidelines: ⚫ Ensure that the place is free of oil, chemicals, inflammables and explosives! ⚫... -
Page 19: Faq
and vibration. ⚫ Heat dissipation space shall be reserved around the blackbody, and the distance from the surrounding objects shall not be less than 10cm. ➢ Calibration ⚫ In order to ensure the accuracy of blackbody temperature measurement, it is recommended to send blackbody to Dahua Co., Ltd. - Page 20 Blackbody: power on and preheat for 20 minutes; thermal imaging equipment: power on and preheat for 60 minutes, with the best effect. 3. Whether it can be installed in outdoor or semi outdoor environment. Because the outdoor temperature, wind, humidity and other environmental factors have a great impact on the temperature measurement of the thermal imaging surface, it is not recommended to be installed outdoors or in the area directly connected to the outdoor, but in a closed and relatively stable environment without wind.
- Page 21 The system time is not synchronized, refer to the time synchronization setting in system debugging. 10. Why is the head frame inaccurate? It may be related to the installation angle and environmental background on site. If the head detection effect is not ideal, please provide the Dav video with two channels on site.
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