I have long had the idea to make a microwave radiation indicator, and I finally got down to business.
This is still a declaration of intent.
Of course, portable indicators are made by anyone who is not too lazy.
Unfortunately, marketing tricks do not allow the device to have a wide functionality (connection to a PC, logging) and at the same time be cheap.
The project provides for an easily removable detector part, which can be used autonomously.
In addition, the device produces an analog signal of 4-20 mA, which is recorded by many PLC ACS.
At the moment, the basic dimensions of the device are estimated at 140x 71x 27mm. Powered by two 14500 batteries (connected in parallel). The device has a power switch and three buttons:
- quick on-off
- switching the brightness of the Day-Night indicator
- battery charge control
How to choose an antenna design? This is a long and painful question. Fortunately, industrial products can provide answers.
Files
KiCAD_MW_Detect_8_2x14500.pdf
Adobe Portable Document Format -
1.48 MB -
03/30/2025 at 10:28
I continue to work on the circuit and design of the microwave indicator.
I have made a PCB layout, and have completed it by about three quarters. At the same time, it became COMPLETELY clear that the device can be placed on a single board, in acceptable dimensions. Without such a long and tedious procedure as tracing, it was impossible to be sure of this. I drew a single-board circuit. I modeled individual units in LTSpice, for example, the input amplifier. At the same time, it must be admitted that for complete confidence it is necessary to make a layout.