AI Image Sensor Calibration

= 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.

13

14

= 2. Calibrate Digits Readings =

15

16

According to the requirements to upgrade the firmware to correct the reading, respectively:[[Digital wheel dial firmware>>url:https://www.dropbox.com/scl/fi/nxa0nw0k2qhbpcxzfsz03/Digital-table-wheel-firmware.rar?rlkey=u9wqmilfwu899fhc9i2jfcwou&st=ftsl46f5&dl=0]]，[[Pointer dial firmware>>url:https://www.dropbox.com/scl/fi/y03feisk7ztq1ey6pmhqb/Pointer-dial-firmware.rar?rlkey=knlx67m1g26xukrthcum1kk23&st=5m196s89&dl=0]].

17

18

Firmware upgrade Reference:[[Update Firmware for the AI Sensors>>http://wiki.dragino.com/xwiki/bin/view/Main/Update%20Firmware%20for%20AI%20Sensor/]].

19

20

== 2.1 Calibrate a Water Meter ==

21

22

=== 2.1.1 Introduce ===

23

24

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.

25

26

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

27

28

The assembly necessitates the use of two screws, two spacers, and this specific device.

29

30

Additionally, there are AIS Sensors available along with AUC USB TTL adapters for AIS Sensors.

31

32

The fixture below is just a demo, user might adjust it with their water meter. Here is the STEP file for the fixture as below: [[Water Meter Fixture Demo>>https://www.dropbox.com/scl/fo/p1ykgysrv8p454swsh4zj/AHCYr5pcOM0WNad4fT1sf_I?rlkey=7x964q1tuvh0ezbhgxb9b2zqg&st=wxxq87t3&dl=0]].

33

34

[[image:image-20240428163842-3.png||height="425" width="609"]] [[image:image-20240428155254-1.png||height="424" width="358"]]

35

36

The procedure is as follows:

37

38

~1. Secure back of the AIS sensor onto the small board and adjust its position according to your requirements. You may use two additional screws for fixation or utilize 3M double-sided adhesive for attachment.

39

40

[[image:image-20240428165320-4.gif]]

41

42

2. Proceed by fastening the device using the previously prepared screws and gaskets.

43

44

[[image:image-20240428165354-5.gif]]

45

46

3. Finally, nestle the device onto your water meter, ensuring that it can be adjusted to meet your specific needs while guaranteeing that the camera is directed towards the digital wheel face.

47

48

[[image:image-20240428165412-6.gif]].

49

50

The AI Sensors and AUC USB TTL Adapter for AIS Sensors are connected and then connected to the PC.

51

52

[[image:image-20240428165634-7.gif]][[image:image-20240428165645-8.jpeg||height="332" width="443"]]

=== 2.1.3 Calibration ===

58

59

Open the software [[HMX_FT4222H_GUI.exe>>https://www.dropbox.com/scl/fi/yktibns4o33oh0lqitqjl/HIMAX_AMR_PC_Tool.7z?rlkey=94d637ntx152idhw8vij39icv&st=4lsq8xf9&dl=0]]. Please ensure that the firmware upgrade software ota.exe is closed before opening HMX_FT4222H_GUI.exe.

60

61

For example, Select the corresponding serial port number, here 14.

62

63

(% class="box warningmessage" %)

64

(((

65

(% 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>>https://www.dropbox.com/scl/fi/mzqx6ld5a4zkcecntqjjg/VisualCppRedist_AIO_x86_x64_v42.rar?rlkey=9fuzodmed1fg9ulquh22h0dtr&st=ph6ozi4d&dl=0]] configuration environment. Otherwise, an error pop-up window occurs when running software.

66

)))

67

68

(% 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" %)

69

70

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

71

72

(% 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" %)

73

74

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.

75

76

(% 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" %)

77

78

(% 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" %)

79

80

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

81

82

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.

83

84

(% 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" %)

85

86

The computer's drawing tool can be used to open the latest bmp image and get the coordinates of the digital wheel dial, as shown below. Based on the format of the digital wheel dial, we can obtain each coordinate point of the current use dial. The (x,y) coordinate on the image is located at the bottom left corner.

87

88

(% 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" %)

89

90

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

91

92

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

93

94

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

95

96

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

97

98

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

99

100

(% 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" %)

101

102

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

103

104

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

105

106

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

107

108

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

109

110

5: Click to write all configuration to AIS;

111

112

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.

113

114

(% 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" %)

115

116

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

117

118

(% 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" %)

119

120

121

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.

122

123

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

124

125

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

126

127

== 2.2 Calibration Power Meter ==

128

129

=== 2.2.1 Introduce ===

130

131

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.

132

133

=== 2.2.2 Fix Sensor to a Power Meter(% title="Click and drag to resize" %)(%%) ===

134

135

You can utilize a couple of pea clips or other suitable fixtures to securely fasten the AIS sensor and ensure precise alignment of the camera with the digital watch wheel.

136

137

[[image:image-20240429091325-1.png||height="706" width="535"]]

138

139

=== 2.2.3 Calibration ===

140

141

Open the software [[HMX_FT4222H_GUI.exe>>https://www.dropbox.com/scl/fi/yktibns4o33oh0lqitqjl/HIMAX_AMR_PC_Tool.7z?rlkey=94d637ntx152idhw8vij39icv&st=4lsq8xf9&dl=0]]. Please ensure that the firmware upgrade software ota.exe is closed before opening HMX_FT4222H_GUI.exe.

142

143

For example, Select the corresponding serial port number, here 14.

144

145

(% class="box warningmessage" %)

146

(((

147

(% 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>>https://www.dropbox.com/scl/fi/mzqx6ld5a4zkcecntqjjg/VisualCppRedist_AIO_x86_x64_v42.rar?rlkey=9fuzodmed1fg9ulquh22h0dtr&st=ph6ozi4d&dl=0]] configuration environment. Otherwise, an error pop-up window occurs when running software.

148

)))

149

150

(% 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" %)

151

152

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

153

154

(% 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="485" width="706"]]

155

156

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.

157

158

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

159

160

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

161

162

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.

163

164

(% 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"]]

165

166

The computer's drawing tool can be used to open the latest bmp image and get the coordinates of the digital wheel dial, as shown below. Based on the format of the digital wheel dial, we can obtain each coordinate point of the current use dial. The (x,y) coordinate on the image is located at the bottom left corner.

167

168

[[image:image-20240420153316-11.png||height="569" width="755"]]

169

170

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

171

172

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

173

174

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

175

176

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

177

178

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

179

180

(% 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" %)

181

182

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

183

184

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

185

186

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

187

188

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

189

190

5: Click to write all configuration to AIS;

191

192

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.

193

194

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

195

196

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

197

198

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

199

200

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.

201

202

[[image:1713595371004-125.png]]

203

204

205

== 2.3 Calibration Gas Meter ==

206

207

=== 2.3.1 Introduce ===

208

209

This gas meter uses G2.5 membrane gas meter. It features eight dial numbers for measurement accuracy.

210

211

=== 2.3.2 Fix Sensor to a Gas Meter ===

212

213

You can utilize a couple of pea clips or other suitable fixtures to securely fasten the AIS sensor and ensure precise alignment of the camera with the digital watch wheel.

214

215

[[image:image-20240429092436-2.png||height="676" width="519"]]

216

217

218

=== 2.3.3 Calibration ===

219

220

Open the software [[HMX_FT4222H_GUI.exe>>https://www.dropbox.com/scl/fi/yktibns4o33oh0lqitqjl/HIMAX_AMR_PC_Tool.7z?rlkey=94d637ntx152idhw8vij39icv&st=4lsq8xf9&dl=0]]. Please ensure that the firmware upgrade software ota.exe is closed before opening HMX_FT4222H_GUI.exe.

221

222

For example, Select the corresponding serial port number, here 14.

223

224

(% class="box warningmessage" %)

225

(((

226

(% 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>>https://www.dropbox.com/scl/fi/mzqx6ld5a4zkcecntqjjg/VisualCppRedist_AIO_x86_x64_v42.rar?rlkey=9fuzodmed1fg9ulquh22h0dtr&st=ph6ozi4d&dl=0]] configuration environment. Otherwise, an error pop-up window occurs when running software.

227

)))

228

229

(% 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" %)

230

231

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

232

233

(% 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:1713598021017-402.png]]

234

235

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.

236

237

[[image:1713592384928-500.png||height="494" width="266"]][[image:1713598094208-496.png||height="494" width="790"]]

238

239

This gas meter has eight fields, and the coordinates of the digital roulette wheel are shown in the figure.

240

241

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

242

243

(% aria-label="image-20240420094632-15.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:image-20240420094632-15.png||data-widget="image" height="113" width="542"]]

244

245

(% id="cke_bm_196694S" style="display:none" %) (%%)The computer's drawing tool can be used to open the latest bmp image and get the coordinates of the digital wheel dial, as shown below. Based on the format of the digital wheel dial, we can obtain each coordinate point of the current use dial. The (x,y) coordinate on the image is located at the bottom left corner.

246

247

[[image:image-20240420153139-10.png||height="530" width="710"]]

248

249

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

250

251

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

252

253

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

254

255

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

256

257

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

258

259

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

260

261

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

262

263

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

264

265

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

266

267

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

268

269

5: Click to write all configuration to AIS;

270

271

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.

272

273

[[image:image-20240420154023-12.png||height="436" width="942"]](% title="Click and drag to resize" %)

274

275

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

276

277

[[image:1713598855240-454.png]]

278

279

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.

280

281

[[image:1714358288601-933.png]]

282

283

== 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"]]

304

305

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

306

307

== 2.5 Pressure Pointer Meter Calibration ==

308

309

=== 2.5.1 Introduce ===

310

311

The pressure pointer meter of the example is 1.6MPa range

312

313

=== 2.5.2 Fix Sensor to a Power Meter ===

314

315

You can utilize a couple of pea clips or other suitable fixtures to securely fasten the AIS sensor and ensure precise alignment of the camera with the pressure pointer meter.

316

317

[[image:image-20240516163229-1.jpeg||height="595" width="446"]]

318

319

=== 2.5.3 Calibration ===

320

321

Open the software [[HMX_FT4222H_GUI.exe>>https://www.dropbox.com/scl/fi/yktibns4o33oh0lqitqjl/HIMAX_AMR_PC_Tool.7z?rlkey=94d637ntx152idhw8vij39icv&st=4lsq8xf9&dl=0]]. Please ensure that the firmware upgrade software ota.exe is closed before opening HMX_FT4222H_GUI.exe.

322

323

For example, Select the corresponding serial port number, here 14.

324

325

(% class="box warningmessage" %)

326

(((

327

(% 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>>https://www.dropbox.com/scl/fi/mzqx6ld5a4zkcecntqjjg/VisualCppRedist_AIO_x86_x64_v42.rar?rlkey=9fuzodmed1fg9ulquh22h0dtr&st=ph6ozi4d&dl=0]] configuration environment. Otherwise, an error pop-up window occurs when running software.

328

)))

329

330

[[image:image-20240516163338-2.png||height="455" width="733"]]

331

332

333

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

334

335

[[image:image-20240516163423-3.png]]

336

337

338

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.

339

340

[[image:image-20240516163501-4.png||height="482" width="694"]]

341

342

[[image:image-20240516163528-5.png||height="336" width="696"]]

343

344

345

The computer's drawing tool can be used to open the latest bmp image and get the coordinates of the pressure pointer meter, as shown below.

346

347

The coordinates of the pressure pointer table are located as shown below.

348

349

1 is the start point, 2 is the center point, and 3 is the end point.

350

351

The (x,y) coordinate on the image is located at the bottom left corner.

352

353

[[image:image-20240516163622-6.png||height="648" width="666"]]

354

355

356

Click on the ROI settingbutton in himax_amr_pc_tool. it will have three optionsThe long dial" option is a long dial dial.The "short dial" option is a short pointer and a number of wheel dial.The digit wheeler option is the digital wheel dial.Now the calibration is the pressure pointer table, which is long dialon."

357

358

[[image:image-20240516163910-7.png]]

359

360

361

Fill in the values of the coordinates you just got, and it's best to get one and write one

362

363

1 Coordinates of the starting point of the scale

364

365

2 Coordinates of the center point of the dial

366

367

3 Coordinates of the end of the scale

368

369

4 Starting scale value

370

371

5 End point scale value *100

372

373

After filling in the data, click "send ROI" to save the Settings and click "Cancel" to exit.

374

375

[[image:image-20240516164128-13.png||height="410" width="889"]]

376

377

378

After the calibration process is completed, The AIS cannot move thereafter to avoid misreading.

379

380

it can be observed that the obtained reading aligns consistently with the numerical value displayed on the digital wheel dial.

381

382

[[image:image-20240516164153-14.png]]

= (% title="Click and drag to resize" %)3. Get Sensor Data.(%%) =

387

388

389

== (% title="Click and drag to resize" %)3.1 Get Image and show in PC(%%) ==

390

391

To get the AIS current image on the PC, you can connect AIS to your PC with TTL to send commands through the serial port to obtain relevant data packets.

392

393

=== (% id="cke_bm_3839S" style="display:none" %) (%%)3.1.1 The image date are obtained by serial port ===

394

395

Select the corresponding baud rate and serial port number through the serial port tool, select HEX display and HEX send, and continuously receive data from the AIS Sensor

396

397

[[image:image-20240514161623-2.png||height="541" width="1439"]]

398

399

In the serial port to send data C0 5A 00 00 00 00 04, and then send C0 5A 00 00 00 00 09, AIS Sensor will send a real-time image of the data packet, and then stop sending. Start with FFD8 and put it in TXT file

400

401

[[image:image-20240514161658-3.png||height="544" width="1441"]]

402

403

404

=== 3.1.2 Combined image ===

405

406

Once all the data has been uploaded to the TTN platform, the subsequent step involves concatenating each packet in sequential order and saving it into a new TXT file. It is important to note that the first 8 bytes of each packet should be removed before concatenation.

407

408

When you combine all the packets, you need to convert the data inside to binary. Here the conversion is demonstrated using the [[WinHex>>http://www.x-ways.net/winhex/index-m.html]] software.

409

410

Open WinHex to open the combined image data file.

411

412

[[image:1714467040612-103.png||height="134" width="649"]]

413

414

Click on the edit option to choose and convert.

415

416

[[image:1714467065723-178.png||height="349" width="762"]]