add simple DMM temperature readout and plot

4fe7dba8 · Peter Jansweijer · 0cf79c68 · 4fe7dba8
Commit 4fe7dba8 authored Sep 08, 2023 by Peter Jansweijer
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log_temp.py sw/insitu_alpha/log_temp.py +113 -0

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--- a/sw/insitu_alpha/log_temp.py
+++ b/sw/insitu_alpha/log_temp.py
+#!/usr/bin/python
+
+"""
+log_temp.py: Logs the temperature and writes it to file
+
+-------------------------------------------------------------------------------
+Copyright (C) 2023 Peter Jansweijer
+    
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>
+-------------------------------------------------------------------------------
+
+Usage:
+  log_temp.py  -name log_temp.out <IP>
+  log_temp.py     -h | --help
+
+Options:
+  -h --help    Show this screen.
+
+"""
+
+import os
+import sys
+import time
+import scipy
+import matplotlib.pyplot as plt
+import vxi11
+
+import pdb
+
+###############################################
+# Main
+###############################################
+
+"""
+Usage:
+  pps_diff.py     -name ddelay.out [-ms /dev/ttyUSB2] [-ss /dev/ttyUSB1] [-t <IP>] -tic <IP> [-o <dir>] [-a <number>] [-r <number>]
+  pps_diff.py     -h | --help
+
+Options:
+  -h --help    Show this screen.
+  -ip          IP address of Digital Multimeter reading PT100 and 
+
+"""
+
+if __name__ == "__main__":
+  import argparse
+  parser = argparse.ArgumentParser()
+  parser.add_argument("-ip", default="10.0.0.237") # DMM default IP
+  parser.add_argument("-t", help="number of seconds between samples", default="1")
+  parser.add_argument("-f", help="no measurements are taken, filename is plotted instead")
+  args = parser.parse_args()
+ 
+  if args.f:
+    data_file = open(args.f, "r")
+    sample_lst = []
+    line_lst = []
+    while 1:
+      line = data_file.readline()
+      if line[:len("#")] != "#":  # Skip lines that are commented out
+        line_lst = line.split(" ")
+        if len(line_lst) < 3:
+          break
+        sample_lst.append(float(line_lst[2]))
+
+    arr=scipy.array(sample_lst)
+    data_file.close()
+    temperature = plt.figure("temperature:")
+    ax = temperature.add_subplot(111)
+    ax.set_xlabel('Sample')
+    ax.set_ylabel('Temp')
+    ax.plot(arr)
+    plt.show()
+
+  else:
+    # open and configure Digital Multimeter with attached PT100
+    dmm =  vxi11.Instrument(args.ip)
+    print(dmm.ask("*IDN?"))
+    # Returns 'Keysight Technologies,34465A,MY57501367,A.02.14-02.40-02.14-00.49-03-01'
+
+    # Configure for 4 wire temperature measurement
+    dmm.write("SAMPle:COUNt 1")
+    dmm.write("UNIT:TEMPerature C")
+
+    timestamp = time.localtime()
+  
+    filename=time.strftime(format("%y%m%d_%H_%M_%S"),timestamp)
+    data_file = open(filename,"w")
+    data_file.write("# Logged Temperature\n")
+
+    # keep measureing until ^C
+    while 1:
+      timestamp = time.localtime()
+      temp = float(dmm.ask("MEAS:TEMP? FRTD"))
+      print(time.strftime(format("%y%m%d %H:%M:%S ") + str(temp)))       
+      data_file.write(time.strftime(format("%y%m%d %H:%M:%S ") + str(temp) +"\n"))
+      data_file.flush()
+      time.sleep (int(args.t))
+
+    data_file.close()
+    
+    
+sys.exit()