Wiki source code of AI Image Sensor Calibration

Version 90.2 by Karry Zhuang on 2024/04/28 16:54
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5
6 **Table of Contents:**
7
8 {{toc/}}
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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
22 == 2.1 Calibrate a Water Meter ==
23
24 === 2.1.1 Introduce ===
25
26 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.
27
28 === 2.1.2 Fix Sensor to a Water Meter ===
29
30 The assembly necessitates the use of two screws, two spacers, and this specific device. Additionally, there are AIS Sensors available along with 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 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
51 (% class="wikigeneratedid" %)
52 === ===
53
54 (% id="cke_bm_19954S" style="display:none" %) (%%)The AI Sensors and AUC USB TTL Adapter for AIS Sensors are connected and then connected to the PC.
55
56
57 The AI Sensors are fixed in the device, and then the water meter is embedded and the Angle is adjusted.
58
59
60 [[image:image-20240428155835-2.png||height="493" width="371"]]
61
62
63 === 2.1.3 Calibration ===
64
65 Revised sentence: Launch [[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.
66
67 Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
68
69 (% class="box warningmessage" %)
70 (((
71 (% 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.
72 )))
73
74 (% 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" %)​
75
76 Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
77
78 (% 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" %)​
79
80 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.
81
82 (% 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" %)​
83
84 (% 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" %)​
85
86 This water meter has only five fields, and the coordinates of the digital roulette wheel are shown in the figure.
87
88 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.
89
90 (% 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" %)​
91
92 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.
93
94 (% 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" %)​
95
96 Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
97
98 The "Long dial" option is the long hand dial.
99
100 The "Short dial" option is the short pointer and digital wheel dial.
101
102 The "Digit wheel" option is the digital wheel dial.
103
104 Now we are calibrating the digital wheel face of the water meter. Here we select "digit wheel".
105
106 (% 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" %)​
107
108 1:Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
109
110 2: Fill in the number of number wheel on their dial,fi;
111
112 3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
113
114 4: Preview whether the setting of their coordinates is accurate;
115
116 5: Click to write all configuration to AIS;
117
118 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.
119
120 (% 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" %)​
121
122 The effect can be previewed by clicking the "Preview correction" button as shown below.
123
124 (% 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" %)​
125
126
127 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.
128
129 (% aria-label="1713577072196-132.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713577072196-132.png||data-widget="image" height="751" width="1073"]]
130
131 (% title="Click and drag to resize" %)​
132
133 == 2.2 Calibration Power Meter ==
134
135 === 2.2.1 Introduce ===
136
137 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.
138
139 === 2.2.2 Fix Sensor to a Power Meter ===
140
141 Do the following with EVB_Board
142 Debug Board SW12=[off on] : FT4222H SPI Slave mode
143 AIoT Board SW123456=[off off off off off off]
144
145 (% 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" %)​(%%) (% title="Click and drag to resize" %)​
146
147 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.
148
149 [[image:image-20240422092350-2.png]](% title="Click and drag to resize" %)​
150
151
152 === 2.2.3 Calibration ===
153
154 Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
155
156 Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
157
158 (% class="box warningmessage" %)
159 (((
160 (% 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.
161 )))
162
163 (% 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" %)​
164
165 Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
166
167 (% 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"]]
168
169 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.
170
171 [[image:1713592384928-500.png||height="494" width="266"]][[image:image-20240420141955-4.png||height="492" width="782"]]
172
173 This power meter has only six fields, and the coordinates of the digital roulette wheel are shown in the figure.
174
175 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.
176
177 (% 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"]]
178
179 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.
180
181 [[image:image-20240420153316-11.png||height="569" width="755"]]
182
183 (% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
184
185 The "Long dial" option is the long hand dial.
186
187 The "Short dial" option is the short pointer and digital wheel dial.
188
189 The "Digit wheel" option is the digital wheel dial.
190
191 Now we are calibrating the digital wheel face of the power meter. Here we select "digit wheel".
192
193 (% 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" %)​
194
195 1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
196
197 2: Fill in the number of number wheel on their dial,six;
198
199 3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
200
201 4: Preview whether the setting of their coordinates is accurate;
202
203 5: Click to write all configuration to AIS;
204
205 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.
206
207 [[image:image-20240420143939-6.png||height="408" width="886"]](% title="Click and drag to resize" %)​
208
209 The effect can be previewed by clicking the "Preview correction" button as shown below.
210
211 [[image:image-20240420144154-7.png||height="534" width="880"]]
212
213 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.
214
215 [[image:1713595371004-125.png]]
216
217
218 == 2.3 Calibration Gas Meter ==
219
220 === 2.3.1 Introduce ===
221
222 This gas meter uses G2.5 membrane gas meter. It features eight dial numbers for measurement accuracy.
223
224 === 2.3.2 Fix Sensor to a Gas Meter ===
225
226 Do the following with EVB_Board
227 Debug Board SW12=[off on] : FT4222H SPI Slave mode
228 AIoT Board SW123456=[off off off off off off]
229
230 (% 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" %)​(%%) (% title="Click and drag to resize" %)​
231
232 Use a hot glue gun and several sticks to attach  for stabilizing the AIS. Adjust the height of the sticks so that the AIS can clearly view the numbers on the gas meter.
233
234 (% title="Click and drag to resize" %)​[[image:image-20240422092731-2.png||height="693" width="518"]]
235
236
237 === 2.3.3 Calibration ===
238
239 Perform a power reset on the EVB board, making sure to close the ota.exe program before opening HMX_FT4222H_GUI.exe.
240
241 Choose the largest number of serial port, for example, here shows 13 and 14, then choose 14.
242
243 (% class="box warningmessage" %)
244 (((
245 (% 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.
246 )))
247
248 (% 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" %)​
249
250 Next, select a Baud rate of 921600 and click on "start". Then, click on "show full image" to display the camera screen.
251
252 (% 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]]
253
254 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.
255
256 [[image:1713592384928-500.png||height="494" width="266"]][[image:1713598094208-496.png||height="494" width="790"]]
257
258 This gas meter has eight fields, and the coordinates of the digital roulette wheel are shown in the figure.
259
260 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.
261
262 (% 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"]]
263
264 (% 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.
265
266 [[image:image-20240420153139-10.png||height="530" width="710"]]
267
268 (% id="cke_bm_67462S" style="display:none" %) (%%)Click the "ROI setting" button in "HIMAX_AMR_PC_Tool" and three options will pop up
269
270 The "Long dial" option is the long hand dial.
271
272 The "Short dial" option is the short pointer and digital wheel dial.
273
274 The "Digit wheel" option is the digital wheel dial.
275
276 Now we are calibrating the digital wheel face of the gas meter. Here we select "digit wheel".
277
278 (% aria-label="1713576691266-408.png image widget" contenteditable="false" role="region" tabindex="-1" %)[[image:1713576691266-408.png||data-widget="image"]]
279
280 1: Fill in the coordinates you just got; it's best to get a coordinate and fill in a coordinate.
281
282 2: Fill in the number of number wheel on their dial,eight;
283
284 3: Select the number of short Pointers (currently we don't use short Pointers, the "digit wheelu" option defaults to 0);
285
286 4: Preview whether the setting of their coordinates is accurate;
287
288 5: Click to write all configuration to AIS;
289
290 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.
291
292 [[image:image-20240420154023-12.png||height="436" width="942"]](% title="Click and drag to resize" %)​
293
294 The effect can be previewed by clicking the "Preview correction" button as shown below.
295
296 [[image:1713598855240-454.png]]
297
298 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.
299
300
301 == 2.4 Digital wheel dial take point coordinate diagram ==
302
303 4  numbers：
304
305 (% 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" %)​
306
307 5 numbers：
308
309 (% 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" %)​
310
311 6 numbers：
312
313 (% 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" %)​
314
315 7 numbers：
316
317 (% 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" %)​
318
319 8 numbers：
320
321 (% 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" %)​
322
323
324 = (% title="Click and drag to resize" %)3. Get Sensor Data.(%%) =
325
326 == (% title="Click and drag to resize" %)3.1 Get Digital Reading After Calibration(%%) ==
327
328
329 == (% title="Click and drag to resize" %)3.2 Get Image and show in PC(%%) ==
330
331

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