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

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]].

22

23

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

24

25

== 2.1 Calibrate a Water Meter ==

26

27

=== 2.1.1 Introduce ===

28

29

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.

30

31

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

32

33

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

34

35

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

36

37

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]].

38

39

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

40

41

The procedure is as follows:

42

43

~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.

44

45

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

46

47

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

48

49

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

50

51

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.

52

53

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

54

55

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

56

57

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

=== 2.1.3 Calibration ===

63

64

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.

65

66

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

67

68

(% class="box warningmessage" %)

69

(((

70

(% 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.

71

)))

72

73

(% 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" %)

74

75

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

76

77

(% 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" %)

78

79

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.

80

81

(% 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" %)

82

83

(% 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" %)

84

85

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

86

87

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.

88

89

(% 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" %)

90

91

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.

92

93

(% 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" %)

94

95

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

96

97

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

98

99

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

100

101

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

102

103

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

104

105

(% 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" %)

106

107

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

108

109

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

110

111

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

112

113

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

114

115

5: Click to write all configuration to AIS;

116

117

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.

118

119

(% 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" %)

120

121

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

122

123

(% 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" %)

124

125

126

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.

127

128

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

129

130

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

131

132

== 2.2 Calibration Power Meter ==

133

134

=== 2.2.1 Introduce ===

135

136

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.

137

138

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

139

140

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.

141

142

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

143

144

=== 2.2.3 Calibration ===

145

146

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.

147

148

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

149

150

(% class="box warningmessage" %)

151

(((

152

(% 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.

153

)))

154

155

(% 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" %)

156

157

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

158

159

(% 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"]]

160

161

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.

162

163

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

164

165

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

166

167

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.

168

169

(% 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"]]

170

171

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.

172

173

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

174

175

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

176

177

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

178

179

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

180

181

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

182

183

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

184

185

(% 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" %)

186

187

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

188

189

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

190

191

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

192

193

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

194

195

5: Click to write all configuration to AIS;

196

197

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.

198

199

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

200

201

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

202

203

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

204

205

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.

206

207

[[image:1713595371004-125.png]]

208

209

210

== 2.3 Calibration Gas Meter ==

211

212

=== 2.3.1 Introduce ===

213

214

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

215

216

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

217

218

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.

219

220

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

221

222

223

=== 2.3.3 Calibration ===

224

225

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.

226

227

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

228

229

(% class="box warningmessage" %)

230

(((

231

(% 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.

232

)))

233

234

(% 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" %)

235

236

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

237

238

(% 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]]

239

240

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.

241

242

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

243

244

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

245

246

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.

247

248

(% 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"]]

249

250

(% 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.

251

252

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

253

254

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

255

256

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

257

258

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

259

260

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

261

262

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

263

264

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

265

266

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

267

268

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

269

270

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

271

272

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

273

274

5: Click to write all configuration to AIS;

275

276

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.

277

278

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

279

280

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

281

282

[[image:1713598855240-454.png]]

283

284

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.

285

286

[[image:1714358288601-933.png]]

287

288

== 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"]]

309

310

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

311

312

== 2.5 Pressure Pointer Meter Calibration ==

313

314

=== 2.5.1 Introduce ===

315

316

The pressure pointer meter of the example is 1.6MPa range

317

318

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

319

320

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.

321

322

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

323

324

=== 2.5.3 Calibration ===

325

326

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.

327

328

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

329

330

(% class="box warningmessage" %)

331

(((

332

(% 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.

333

)))

334

335

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

336

337

338

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

339

340

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

341

342

343

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.

344

345

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

346

347

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

348

349

350

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.

351

352

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

353

354

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

355

356

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

357

358

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

359

360

361

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."

362

363

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

364

365

366

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

367

368

1 Coordinates of the starting point of the scale

369

370

2 Coordinates of the center point of the dial

371

372

3 Coordinates of the end of the scale

373

374

4 Starting scale value

375

376

5 End point scale value *100

377

378

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

379

380

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

381

382

383

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

384

385

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

386

387

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

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

392

393

394

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

395

396

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.

397

398

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

399

400

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

401

402

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

403

404

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

405

406

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

407

408

409

=== 3.1.2 Combined image ===

410

411

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.

412

413

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.

414

415

Open WinHex to open the combined image data file.

416

417

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

418

419

Click on the edit option to choose and convert.

420

421

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