AI Image Sensor Calibration

**Table of Contents:**

7

8

= 1. Overview =

AIS is a video photo recognition sensor, the sensor can be used in electricity meters, gas meters, water meters, pressure gauges and other types of meters. Accurately identify the number of the current dial or upload the picture of the current dial for comparison, which can replace people to go to the door to read the meter, and is more accurate and energy-saving than the meter. The first thing to do is to fix the AIS sensor, the end direction needs to be aligned with the object that needs to be identified, you can check whether the object all appears in the lens range through the upper computer, and then calibrate, Chapter 2 will explain the calibration method of different tables.

18

19

= 2. Calibrate Digits Readings =

20

21

== 2.1 Calibrate a Water Meter ==

22

23

=== 2.1.1 Introduce ===

24

25

This water meter is designed in accordance with the Chinese standard for drinking cold water meters and hot water meters, GB/T 778.1-2007. It features five dial numbers for measurement accuracy.

26

27

=== 2.1.2 Fix Sensor to a Water Meter ===

28

29

Do the following with EVB_Board

30

Debug Board SW12=[off on] : FT4222H SPI Slave mode

31

AIoT Board SW123456=[off off off off off off]

32

33

(% aria-label="image-20240419174248-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174248-4.png||data-widget="image" height="419" width="419"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)(%%) (% aria-label="image-20240419174159-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174159-3.png||data-widget="image" height="420" width="556"]](% title="Click and drag to resize" %)

34

35

Use a hot glue gun and several sticks to attach a triangle for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the water meter.

36

37

(% aria-label="image-20240419173432-1.jpeg image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419173432-1.jpeg||data-widget="image" height="757" width="757"]](% title="Click and drag to resize" %)

38

39

40

=== 2.1.3 Calibration ===

41

42

Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.

43

44

(% class="box warningmessage" %)

45

(((

46

(% class="mark" %)Note: before you start the software (%%)HMX_FT4222H_GUI.exe(% class="mark" %). you must pre-install the visualcppredist_aio_x6_x64_v42.exe configuration environment. Otherwise, an error pop-up window occurs when running software.

47

)))

48

49

(% aria-label="1713519971789-213.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713519971789-213.png||data-widget="image"]](% title="Click and drag to resize" %)

50

51

Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.

52

53

(% aria-label="image-20240419174908-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174908-5.png||data-widget="image" height="491" width="406"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)(% aria-label="image-20240419175103-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175103-7.png||data-widget="image" height="489" width="632"]](% title="Click and drag to resize" %)

54

55

Click "enable Raw" and save the BMP image in the "Save" folder. This step is necessary to obtain the coordinate points of the watch face.

56

57

(% aria-label="image-20240419175324-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175324-8.png||data-widget="image" height="637" width="911"]](% title="Click and drag to resize" %)

58

59

(% aria-label="image-20240419175324-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175324-9.png||data-widget="image" height="348" width="913"]](% title="Click and drag to resize" %)

60

61

This water meter has only five fields, and the coordinates of the digital roulette wheel are shown in the figure.

62

63

If your device's digital scroll wheel dial does not match these five fields, you can try the other field dial coordinate dot plots in 2.4.

64

65

(% aria-label="1713573839396-314.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713573839396-314.png||data-widget="image" height="198" width="649"]](% title="Click and drag to resize" %)

66

67

The computer's drawing tool should be used to open the most recent bmp image and get the coordinates of the digital wheel dial, as shown in the picture below. Also, we need to obtain each coordinate point of the current dial following the format of said digital wheel dial. It's important to note that the (x,y) coordinate of the mouse on the image corresponds to its bottom left corner.

68

69

(% aria-label="1713574859715-722.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713574859715-722.png||data-widget="image" height="481" width="576"]](% title="Click and drag to resize" %)

70

71

Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up

72

73

The "Long dial" option is the long hand dial.

74

75

The "Short dial" option is the short pointer and digital wheel dial.

76

77

The "Digit wheel" option is the digital wheel dial.

78

79

Now we are calibrating the digital wheel face of the water meter. Here we select "digit wheel".

80

81

(% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png||data-widget="image"]](% title="Click and drag to resize" %)

82

83

1:Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.

84

85

2: Fill in the number of number wheel on their dial,fi;

86

87

3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);

88

89

4: Preview whether the setting of their coordinates is accurate;

90

91

5: Click to write all configuration to AIS;

92

93

6: Click the exit configuration interface, at this time, there will be a readout. If the Reading of "reading" is consistent with the watch face, the calibration is successful. The AIS cannot move thereafter to avoid misreading.

94

95

(% aria-label="1713576930301-479.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576930301-479.png||data-widget="image"]](% title="Click and drag to resize" %)

96

97

The effect can be previewed by clicking the "Preview correction" button as shown below.

98

99

(% aria-label="1713577029535-253.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577029535-253.png||data-widget="image" height="748" width="1069"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)

100

101

102

After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.

103

104

(% aria-label="1713577072196-132.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577072196-132.png||data-widget="image" height="751" width="1073"]]

105

106

(% title="Click and drag to resize" %)

107

108

== 2.2 Calibration power meter ==

109

110

111

== 2.1 Calibrate a Water Meter ==

112

113

=== 2.2.1 Introduce ===

114

115

This power meter is designed in accordance with the Chinese standard for Electricity metering equipment, GB/T 17215.321-2008. It features six dial numbers for measurement accuracy.

116

117

=== 2.2.2 Fix Sensor to a Water Meter ===

118

119

Do the following with EVB_Board

120

Debug Board SW12=[off on] : FT4222H SPI Slave mode

121

AIoT Board SW123456=[off off off off off off]

122

123

(% aria-label="image-20240419174248-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174248-4.png||data-widget="image" height="419" width="419"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)(%%) (% aria-label="image-20240419174159-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174159-3.png||data-widget="image" height="420" width="556"]](% title="Click and drag to resize" %)

124

125

Use a hot glue gun and several sticks to attach a triangle for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the power meter.

126

127

[[image:image-20240420134742-1.jpeg||height="909" width="909"]](% title="Click and drag to resize" %)

128

129

130

=== 2.2.3 Calibration ===

131

132

Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.

133

134

(% class="box warningmessage" %)

135

(((

136

(% class="mark" %)Note: before you start the software (%%)HMX_FT4222H_GUI.exe(% class="mark" %). you must pre-install the visualcppredist_aio_x6_x64_v42.exe configuration environment. Otherwise, an error pop-up window occurs when running software.

137

)))

138

139

(% aria-label="1713519971789-213.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713519971789-213.png||data-widget="image"]](% title="Click and drag to resize" %)

140

141

Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.

142

143

(% aria-label="image-20240419174908-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174908-5.png||data-widget="image" height="491" width="406"]][[image:image-20240420135207-3.png||height="450" width="654"]]

144

145

Click "enable Raw" and save the BMP image in the "Save" folder. This step is necessary to obtain the coordinate points of the watch face.

146

147

[[image:1713592384928-500.png||height="494" width="266"]][[image:image-20240420141955-4.png||height="492" width="782"]]

148

149

This power meter has only six fields, and the coordinates of the digital roulette wheel are shown in the figure.

150

151

If your device's digital scroll wheel dial does not match these six fields, you can try the other field dial coordinate dot plots in 2.4.

152

153

(% aria-label="image-20240420094632-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-13.png||data-widget="image" height="148" width="588"]]

154

155

The computer's drawing tool should be used to open the most recent bmp image and get the coordinates of the digital wheel dial, as shown in the picture below. Also, we need to obtain each coordinate point of the current dial following the format of said digital wheel dial. It's important to note that the (x,y) coordinate of the mouse on the image corresponds to its bottom left corner.

156

157

[[image:image-20240420134851-2.jpeg||height="626" width="837"]]

158

159

(% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up

160

161

The "Long dial" option is the long hand dial.

162

163

The "Short dial" option is the short pointer and digital wheel dial.

164

165

The "Digit wheel" option is the digital wheel dial.

166

167

Now we are calibrating the digital wheel face of the power meter. Here we select "digit wheel".

168

169

(% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png||data-widget="image"]](% title="Click and drag to resize" %)

170

171

1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.

172

173

2: Fill in the number of number wheel on their dial,six;

174

175

3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);

176

177

4: Preview whether the setting of their coordinates is accurate;

178

179

5: Click to write all configuration to AIS;

180

181

6: Click the exit configuration interface, at this time, there will be a readout. If the Reading of "reading" is consistent with the watch face, the calibration is successful. The AIS cannot move thereafter to avoid misreading.

182

183

[[image:image-20240420143939-6.png||height="408" width="886"]](% title="Click and drag to resize" %)

184

185

The effect can be previewed by clicking the "Preview correction" button as shown below.

186

187

[[image:image-20240420144154-7.png||height="534" width="880"]]

188

189

After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.

190

191

[[image:1713595371004-125.png]]

192

193

194

== 2.3 Calibration gas meter ==

== 2.4 Digital wheel dial take point coordinate diagram ==

4 numbers：

(% aria-label="image-20240420094632-11.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-11.png||data-widget="image" height="134" width="410"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)

5 numbers：

(% aria-label="image-20240420094632-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-12.png||data-widget="image" height="130" width="427"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)

6 numbers：

(% aria-label="image-20240420094632-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-13.png||data-widget="image" height="112" width="444"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)

7 numbers：

(% aria-label="image-20240420094632-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-14.png||data-widget="image" height="111" width="454"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)

8 numbers：

(% aria-label="image-20240420094632-15.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-15.png||data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==||draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)

Wiki source code of AI Image Sensor Calibration

Applications

Navigation

author	version	line-number	content
		1
		2
		3
		4
		5
		6	Table of Contents:
		7
		8	{{toc/}}
		9
		10
		11
		12
		13
		14
		15	= 1. Overview =
		16
		17	AIS is a video photo recognition sensor, the sensor can be used in electricity meters, gas meters, water meters, pressure gauges and other types of meters. Accurately identify the number of the current dial or upload the picture of the current dial for comparison, which can replace people to go to the door to read the meter, and is more accurate and energy-saving than the meter. The first thing to do is to fix the AIS sensor, the end direction needs to be aligned with the object that needs to be identified, you can check whether the object all appears in the lens range through the upper computer, and then calibrate, Chapter 2 will explain the calibration method of different tables.
		18
		19	= 2. Calibrate Digits Readings =
		20
		21	== 2.1 Calibrate a Water Meter ==
		22
		23	=== 2.1.1 Introduce ===
		24
		25	This water meter is designed in accordance with the Chinese standard for drinking cold water meters and hot water meters, GB/T 778.1-2007. It features five dial numbers for measurement accuracy.
		26
		27	=== 2.1.2 Fix Sensor to a Water Meter ===
		28
		29	Do the following with EVB_Board
		30	Debug Board SW12=[off on] : FT4222H SPI Slave mode
		31	AIoT Board SW123456=[off off off off off off]
		32
		33	(% aria-label="image-20240419174248-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174248-4.png\|\|data-widget="image" height="419" width="419"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)(%%) (% aria-label="image-20240419174159-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174159-3.png\|\|data-widget="image" height="420" width="556"]](% title="Click and drag to resize" %)
		34
		35	Use a hot glue gun and several sticks to attach a triangle for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the water meter.
		36
		37	(% aria-label="image-20240419173432-1.jpeg image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419173432-1.jpeg\|\|data-widget="image" height="757" width="757"]](% title="Click and drag to resize" %)
		38
		39
		40	=== 2.1.3 Calibration ===
		41
		42	Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
		43
		44	(% class="box warningmessage" %)
		45	(((
		46	(% class="mark" %)Note: before you start the software (%%)HMX_FT4222H_GUI.exe(% class="mark" %). you must pre-install the visualcppredist_aio_x6_x64_v42.exe configuration environment. Otherwise, an error pop-up window occurs when running software.
		47	)))
		48
		49	(% aria-label="1713519971789-213.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713519971789-213.png\|\|data-widget="image"]](% title="Click and drag to resize" %)
		50
		51	Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
		52
		53	(% aria-label="image-20240419174908-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174908-5.png\|\|data-widget="image" height="491" width="406"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)(% aria-label="image-20240419175103-7.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175103-7.png\|\|data-widget="image" height="489" width="632"]](% title="Click and drag to resize" %)
		54
		55	Click "enable Raw" and save the BMP image in the "Save" folder. This step is necessary to obtain the coordinate points of the watch face.
		56
		57	(% aria-label="image-20240419175324-8.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175324-8.png\|\|data-widget="image" height="637" width="911"]](% title="Click and drag to resize" %)
		58
		59	(% aria-label="image-20240419175324-9.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419175324-9.png\|\|data-widget="image" height="348" width="913"]](% title="Click and drag to resize" %)
		60
		61	This water meter has only five fields, and the coordinates of the digital roulette wheel are shown in the figure.
		62
		63	If your device's digital scroll wheel dial does not match these five fields, you can try the other field dial coordinate dot plots in 2.4.
		64
		65	(% aria-label="1713573839396-314.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713573839396-314.png\|\|data-widget="image" height="198" width="649"]](% title="Click and drag to resize" %)
		66
		67	The computer's drawing tool should be used to open the most recent bmp image and get the coordinates of the digital wheel dial, as shown in the picture below. Also, we need to obtain each coordinate point of the current dial following the format of said digital wheel dial. It's important to note that the (x,y) coordinate of the mouse on the image corresponds to its bottom left corner.
		68
		69	(% aria-label="1713574859715-722.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713574859715-722.png\|\|data-widget="image" height="481" width="576"]](% title="Click and drag to resize" %)
		70
		71	Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
		72
		73	The "Long dial" option is the long hand dial.
		74
		75	The "Short dial" option is the short pointer and digital wheel dial.
		76
		77	The "Digit wheel" option is the digital wheel dial.
		78
		79	Now we are calibrating the digital wheel face of the water meter. Here we select "digit wheel".
		80
		81	(% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png\|\|data-widget="image"]](% title="Click and drag to resize" %)
		82
		83	1:Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
		84
		85	2: Fill in the number of number wheel on their dial,fi;
		86
		87	3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
		88
		89	4: Preview whether the setting of their coordinates is accurate;
		90
		91	5: Click to write all configuration to AIS;
		92
		93	6: Click the exit configuration interface, at this time, there will be a readout. If the Reading of "reading" is consistent with the watch face, the calibration is successful. The AIS cannot move thereafter to avoid misreading.
		94
		95	(% aria-label="1713576930301-479.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576930301-479.png\|\|data-widget="image"]](% title="Click and drag to resize" %)
		96
		97	The effect can be previewed by clicking the "Preview correction" button as shown below.
		98
		99	(% aria-label="1713577029535-253.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577029535-253.png\|\|data-widget="image" height="748" width="1069"]](% style="background:url(~"http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png~") rgba(220, 220, 220, 0.5); left:0px; top:-15px" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
		100
		101
		102	After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.
		103
		104	(% aria-label="1713577072196-132.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577072196-132.png\|\|data-widget="image" height="751" width="1073"]]
		105
		106	(% title="Click and drag to resize" %)
		107
		108	== 2.2 Calibration power meter ==
		109
		110
		111	== 2.1 Calibrate a Water Meter ==
		112
		113	=== 2.2.1 Introduce ===
		114
		115	This power meter is designed in accordance with the Chinese standard for Electricity metering equipment, GB/T 17215.321-2008. It features six dial numbers for measurement accuracy.
		116
		117	=== 2.2.2 Fix Sensor to a Water Meter ===
		118
		119	Do the following with EVB_Board
		120	Debug Board SW12=[off on] : FT4222H SPI Slave mode
		121	AIoT Board SW123456=[off off off off off off]
		122
		123	(% aria-label="image-20240419174248-4.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174248-4.png\|\|data-widget="image" height="419" width="419"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220, 220, 220, 0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)(%%) (% aria-label="image-20240419174159-3.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174159-3.png\|\|data-widget="image" height="420" width="556"]](% title="Click and drag to resize" %)
		124
		125	Use a hot glue gun and several sticks to attach a triangle for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the power meter.
		126
		127	[[image:image-20240420134742-1.jpeg\|\|height="909" width="909"]](% title="Click and drag to resize" %)
		128
		129
		130	=== 2.2.3 Calibration ===
		131
		132	Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
		133
		134	(% class="box warningmessage" %)
		135	(((
		136	(% class="mark" %)Note: before you start the software (%%)HMX_FT4222H_GUI.exe(% class="mark" %). you must pre-install the visualcppredist_aio_x6_x64_v42.exe configuration environment. Otherwise, an error pop-up window occurs when running software.
		137	)))
		138
		139	(% aria-label="1713519971789-213.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713519971789-213.png\|\|data-widget="image"]](% title="Click and drag to resize" %)
		140
		141	Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
		142
		143	(% aria-label="image-20240419174908-5.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240419174908-5.png\|\|data-widget="image" height="491" width="406"]][[image:image-20240420135207-3.png\|\|height="450" width="654"]]
		144
		145	Click "enable Raw" and save the BMP image in the "Save" folder. This step is necessary to obtain the coordinate points of the watch face.
		146
		147	[[image:1713592384928-500.png\|\|height="494" width="266"]][[image:image-20240420141955-4.png\|\|height="492" width="782"]]
		148
		149	This power meter has only six fields, and the coordinates of the digital roulette wheel are shown in the figure.
		150
		151	If your device's digital scroll wheel dial does not match these six fields, you can try the other field dial coordinate dot plots in 2.4.
		152
		153	(% aria-label="image-20240420094632-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-13.png\|\|data-widget="image" height="148" width="588"]]
		154
		155	The computer's drawing tool should be used to open the most recent bmp image and get the coordinates of the digital wheel dial, as shown in the picture below. Also, we need to obtain each coordinate point of the current dial following the format of said digital wheel dial. It's important to note that the (x,y) coordinate of the mouse on the image corresponds to its bottom left corner.
		156
		157	[[image:image-20240420134851-2.jpeg\|\|height="626" width="837"]]
		158
		159	(% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
		160
		161	The "Long dial" option is the long hand dial.
		162
		163	The "Short dial" option is the short pointer and digital wheel dial.
		164
		165	The "Digit wheel" option is the digital wheel dial.
		166
		167	Now we are calibrating the digital wheel face of the power meter. Here we select "digit wheel".
		168
		169	(% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png\|\|data-widget="image"]](% title="Click and drag to resize" %)
		170
		171	1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
		172
		173	2: Fill in the number of number wheel on their dial,six;
		174
		175	3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
		176
		177	4: Preview whether the setting of their coordinates is accurate;
		178
		179	5: Click to write all configuration to AIS;
		180
		181	6: Click the exit configuration interface, at this time, there will be a readout. If the Reading of "reading" is consistent with the watch face, the calibration is successful. The AIS cannot move thereafter to avoid misreading.
		182
		183	[[image:image-20240420143939-6.png\|\|height="408" width="886"]](% title="Click and drag to resize" %)
		184
		185	The effect can be previewed by clicking the "Preview correction" button as shown below.
		186
		187	[[image:image-20240420144154-7.png\|\|height="534" width="880"]]
		188
		189	After the calibration process is completed, it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.
		190
		191	[[image:1713595371004-125.png]]
		192
		193
		194	== 2.3 Calibration gas meter ==
		195
		196
		197
		198
		199
		200
		201
		202
		203
		204	== 2.4 Digital wheel dial take point coordinate diagram ==
		205
		206	4 numbers：
		207
		208	(% aria-label="image-20240420094632-11.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-11.png\|\|data-widget="image" height="134" width="410"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
		209
		210	5 numbers：
		211
		212	(% aria-label="image-20240420094632-12.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-12.png\|\|data-widget="image" height="130" width="427"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
		213
		214	6 numbers：
		215
		216	(% aria-label="image-20240420094632-13.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-13.png\|\|data-widget="image" height="112" width="444"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
		217
		218	7 numbers：
		219
		220	(% aria-label="image-20240420094632-14.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-14.png\|\|data-widget="image" height="111" width="454"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)
		221
		222	8 numbers：
		223
		224	(% aria-label="image-20240420094632-15.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-15.png\|\|data-widget="image"]](% style="background-image:url(http://wiki.dragino.com/xwiki/webjars/wiki%3Axwiki/application-ckeditor-webjar/1.61/plugins/widget/images/handle.png); background:rgba(220,220,220,0.5); display:none" %)[[image:data:image/gif;base64,R0lGODlhAQABAPABAP///wAAACH5BAEKAAAALAAAAAABAAEAAAICRAEAOw==\|\|draggable="true" height="15" role="presentation" title="Click and drag to move" width="15"]](% title="Click and drag to resize" %)