AN INFORMATION PROCESSING AND LOGGING SYSTEM FOR 
	THE BRONCHODILATOR LABORATORY....DON COLLELA  5/73

SIGNALS FROM MULTIPLE ANALOG SOURCES ARE PROCESSED IN REAL TIME
AND THE DATA TRANSMITTED VIA PHONE TO A MINICOMPUTER. AFTER
MANIPULATION BY A FOCAL LANGUAGE PROGRAM THE RESULTS ARE
TRANSMITTED BACK TO THE LOCAL PRINTER AT THE LABORATORY.
THE TURNAROUND TIME FROM ANALOG SIGNAL TO PRINTED RESULTS IS 
A FEW SECONDS. TWO COMPUTERS HAVE BEEN MODIFIED TO ALLOW 
TELEPHONE COMMUNICATION FOR THIS AND OTHER PROJECTS:THE 
PDP8/I IN PHARMACOLOGY AND THE PDP12 IN PLANNING  & OPERATIONS.
THE SAME PROCESSING PROGRAM IS AVAILABLE ON EITHER COMPUTER

..... ANALOG SOURCES...
THE ESSENTIAL DATA SENT TO THE COMPUTER  FROM THE CAT SOLEUS PREPARATION
 INCLUDES:

	. THE SYSTOLIC AND DIASTOLIC VALUES OF AORTIC BLOOD PRESSURE.
	. THE AREA UNDER A MUSCLE RESPONSE CURVE.
	. THE CURRENT HEART RATE.

TRANSDUCERS ATTACHED TO THE ANIMAL PREPARATION ARE ATTACHED
TO SANBORN AMPLIFIERS WHICH OUTPUT TO THE MULTICHANNEL ANALOG CHART
RECORDERS. OUTPUT SIGNALS REPRESENTING BLOOD PRESSURE AND MUSCLE
RESPONSE ARE FED TO A CARDIOTACH AND GATED INTEGRATOR RESPECTIVELY.
THESE HARDWARE UNITS IN TURN OUTPUT ANALOG SIGNALS REPRESENTING
HEART RATE AND AREA. A UNIQUE CIRCUIT DESIGN, THE PEAK DETECTOR,
CAPTURES INDIVIDUAL SYSTOLIC AND DIASTOLIC VALUES AND STORES THE
ANALOG LEVEL. THUS ALL CONTINUOUS ANALOG SIGNALS ARE CONVERTED
TO STATIONARY ANALOG LEVELS READY TO BE PRESENTED TO THE 
DATA LOGGING AND TRANSMISSION SYSTEM.