What's the best PIR sensor?
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I have received:
- AM312 based complete PIR sensors, basic sensor with Vcc, GND and output. Claimed consumption on datasheet 20µA.
- AM612 PIR sensors (sensors only). This include all the circuitry in the metal cap, so you only have to add basic components like caps and resistors to set parameters: sensibility, trigger duration. Claimed consumption on datasheet: 15uA.
I'll try to test them this week to first see if the claims are true (or at least, not too optimistic :D ) on power consumption, then I'll make some basic sensors to check range and stability for a while.
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I have published the brochure in which I tested the eleven pyroelectric detectors from different manufacturers, pyroelectric materials, and electrical connections - both parallel and serial. I tested them under the same conditions. I hope this helps. Feel free to ask the questions:)
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I have published the brochure in which I tested the eleven pyroelectric detectors from different manufacturers, pyroelectric materials, and electrical connections - both parallel and serial. I tested them under the same conditions. I hope this helps. Feel free to ask the questions:)
@pyrodetector said in What's the best PIR sensor?:
I have published the brochure in which I tested the eleven pyroelectric detectors from different manufacturers, pyroelectric materials, and electrical connections - both parallel and serial. I tested them under the same conditions. I hope this helps. Feel free to ask the questions:)
For the TL;DR, which one did you like the best?
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@pyrodetector said in What's the best PIR sensor?:
I have published the brochure in which I tested the eleven pyroelectric detectors from different manufacturers, pyroelectric materials, and electrical connections - both parallel and serial. I tested them under the same conditions. I hope this helps. Feel free to ask the questions:)
For the TL;DR, which one did you like the best?
@NeverDie said in What's the best PIR sensor?:
@pyrodetector said in What's the best PIR sensor?:
I have published the brochure in which I tested the eleven pyroelectric detectors from different manufacturers, pyroelectric materials, and electrical connections - both parallel and serial. I tested them under the same conditions. I hope this helps. Feel free to ask the questions:)
For the TL;DR, which one did you like the best?
Dear NeverDie!
What is "TL;DR", please?
Every sensor is good for its application. Among a set of sensors the best two sensors or more are those having similar characteristics. -
@NeverDie said in What's the best PIR sensor?:
@pyrodetector said in What's the best PIR sensor?:
I have published the brochure in which I tested the eleven pyroelectric detectors from different manufacturers, pyroelectric materials, and electrical connections - both parallel and serial. I tested them under the same conditions. I hope this helps. Feel free to ask the questions:)
For the TL;DR, which one did you like the best?
Dear NeverDie!
What is "TL;DR", please?
Every sensor is good for its application. Among a set of sensors the best two sensors or more are those having similar characteristics.@pyrodetector "TL;DR" = "too long; didn't read." Nothing personal. Just a common internet acronym. It means, in effect, "What's the bottom line?"
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@NeverDie - Just in case you haven't seen them there are a number of TI Reference Designs and Application Notes that you may find useful.
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@pyrodetector "TL;DR" = "too long; didn't read." Nothing personal. Just a common internet acronym. It means, in effect, "What's the bottom line?"
@NeverDie said in What's the best PIR sensor?:
@pyrodetector "TL;DR" = "too long; didn't read." Nothing personal. Just a common internet acronym. It means, in effect, "What's the bottom line?"
Dear @NeverDie Thanks a lot! I am not an experienced user on the internet forums and you help me be getting better.
In order to say which sensor is the best, one has to determine the criteria. I research the dynamic behavior of pyroelectric detectors. One common rule is true for all pyroelectric detectors: the higher the AC responsivity, the higher the noise, the higher the current consumption, the shorter the transient response. And vice versa. If you want to gain more knowledge on pyroelectric detectors, you can build an experimental setup/bench similar to mine for testing your pyroelectric detectors. I wish anyone had such a bench and we could share the results with one another. Probably, closer to spring, I will test the sensor you mentioned above and publish its transient response here. -
At the time I thought the am612 was in a good sweet spot (low price, low power, and "good enough" sensitivity), but technology is constantly improving, and so I'm always interested if anyone knows of something better.
Also, these days wireless cameras are so cheap that I think the trend is toward combining them with PIR's, so that the cause of the trigger is always documented (well, to the degree it can be).
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At the time I thought the am612 was in a good sweet spot (low price, low power, and "good enough" sensitivity), but technology is constantly improving, and so I'm always interested if anyone knows of something better.
Also, these days wireless cameras are so cheap that I think the trend is toward combining them with PIR's, so that the cause of the trigger is always documented (well, to the degree it can be).
@NeverDie AM612 has been improved with BS612: down to 2.2V instead of 2.7V, and max 11uA working current compared to 14.
There's also a HM612 which is supposed to be "long range" and has a higher sensibility, other specs seem to be the same. I've not tested them, not using any pir sensors here it's too hot to be usable :) -
At the time I thought the am612 was in a good sweet spot (low price, low power, and "good enough" sensitivity), but technology is constantly improving, and so I'm always interested if anyone knows of something better.
Also, these days wireless cameras are so cheap that I think the trend is toward combining them with PIR's, so that the cause of the trigger is always documented (well, to the degree it can be).
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@NeverDie
Excelitas PYD1588/1598 are the best I've used, running now for years without a single false alert.
Fully integrated, 1.8V and only 3uA@lood29
I recently got a PYD1598 sensor up an running. I made a lot of guesses at the settings and would like to hear what you are using. I wound up with:
Pulse Detection Mode 0 = signal has to exceed the threshold and change of sign
High Pass Filter Freq. 1 = 0.2 Hz
Filter Source 0 = PIR (BPF)
Window Time 0 = 2 seconds
Pulse Counter 0 = 1 pulse
Blind Time 2 seconds
Threshold = 128I played around with the threshold a little, but didn't get a very good sense of the tradeoff of sensitivity vs false alarms (working in a relatively small room). The 128 seems to work, but wondering if there are better settings.
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@NeverDie
Excelitas PYD1588/1598 are the best I've used, running now for years without a single false alert.
Fully integrated, 1.8V and only 3uA -
@lood29
I recently got a PYD1598 sensor up an running. I made a lot of guesses at the settings and would like to hear what you are using. I wound up with:
Pulse Detection Mode 0 = signal has to exceed the threshold and change of sign
High Pass Filter Freq. 1 = 0.2 Hz
Filter Source 0 = PIR (BPF)
Window Time 0 = 2 seconds
Pulse Counter 0 = 1 pulse
Blind Time 2 seconds
Threshold = 128I played around with the threshold a little, but didn't get a very good sense of the tradeoff of sensitivity vs false alarms (working in a relatively small room). The 128 seems to work, but wondering if there are better settings.
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