A02YYUW Ultrasonic Sensor returns 'FF 00 00 FF'.
Account cancelled 2021-09-03 04:37:42 453 Views1 Replies Hello.
Recently I have been receiving data from A02YYUW that says 'FF 00 00 FF'.
I don't think I received this value before.
I think this data indicates that the distance to the object is zero, but what does this actually mean?
I don't think it is possible to detect zero distance to an object using ultrasonic waves, so I assume that the data is being transmitted from A02YYUW with some intention.
This phenomenon appears to occur without warning, and then returns to normal after some time.
The object is stationary at this time, and the distance is about 70Cm.
(measured diagonally backward to a parked car outside.)
Thank you very much.
1) Example of normal data
Recently I have been receiving data from A02YYUW that says 'FF 00 00 FF'.
I don't think I received this value before.
I think this data indicates that the distance to the object is zero, but what does this actually mean?
I don't think it is possible to detect zero distance to an object using ultrasonic waves, so I assume that the data is being transmitted from A02YYUW with some intention.
This phenomenon appears to occur without warning, and then returns to normal after some time.
The object is stationary at this time, and the distance is about 70Cm.
(measured diagonally backward to a parked car outside.)
Thank you very much.
1) Example of normal data
2) Example of abnormal data[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:40] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 B2 B3 ( 690)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:41] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:42] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:43] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:08:44] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:44] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AF B0 ( 687)
[2021/08/25 18:08:45] A02YYUW FF 02 AE AF ( 686)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:40] A02YYUW FF 08 46 4D (2118)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:40] A02YYUW FF 09 DB E3 (2523)
[2021/08/25 18:45:40] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:41] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 07 9D A3 (1949)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:42] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 04 9A 9D (1178)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:43] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 06 71 76 (1649)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:44] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 06 07 0C (1543)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 06 ED F2 (1773)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
[2021/08/25 18:45:45] A02YYUW FF 00 00 FF (9999)
2024-03-09 01:00:48 tttt.dddd
Hi,
I have the same issue on some sensor. I have 1 that does not seem to have this issue.
From the testing I have done they work but when the object is in a certain location or they have a clear line of sight they return:
FF 00 00 FF
They return values when something comes in sight.
tttt.dddd 