Patent EA-005087-B1 (EA)
Title: Telematic wireless thermometer
IPC: G01K1/02
Filed: 1999-05-12
Abstract: 1. A wireless telematic thermometer for remote measuring of the temperature of a human or animal body, comprising a transmitting module connected with the body to be controlled, and a receiving module positioned at a remote place and tuned to the same frequency as the frequency of the transmitting module, which is characterised in that the transmitting module comprises a transistor (2), to the collector of which a parallel resonant circuit is connected to transmit corresponding signals to the receiving module; as well as a quartz crystal to control the frequency of the transistor's switching; a microprocessor (1) for modulating the oscillations of the transmitting circuit through its connection with the base of the transistor (2) connected with a probe (4) in contact with the body whose temperature is to be controlled, wherein the resistance of said probe (4) depends on the temperature of the body whose temperature is to be controlled, wherein the microprocessor is designed to provide the transformation of the probe (4) resistance alteration into a corresponding code designating a new value of temperature; a condenser (5) with a sufficiently high capacity to maintain the electrical power supply of the transmitting module for a predetermined minimum period of time, at least 12 hours; terminal means (A, B, C, D, E), intended for setting codes in the transmitter from the receiver, for recharging the power supply means (5), or for possible connection, through an interface, to an appropriate computer; a receiving module, a microprocessor (7) which of comprises an internal generator with a frequency stabilized by the crystal (8), a group of means (9, 10, 11) of recording movement, electrically connected to said processor (7) and controlling the viewing screen means (12) consisting of a liquid crystal display for demonstrating the information supported by said group of recording means (9, 10, 11), as well as the following devices also associated with the processor (7) - a consequence port consisting of terminals (13); several buttons (14) for determining and setting the different functions; acoustic (15) and luminous (16) warning means, and different terminal means (A', B', C') for providing electric connection with said means (A, B, C) of the said transmitting module for ensuring exchange of the corresponding operations. 2. A wireless telematic thermometer, as claimed in claim 1, characterised in that the said probe (4) associated with the microprocessor (1) in the transmitting module consists, preferably, of a thermo-resistant probe, preferably of an NTC-type resistance, housed inside, and in contact with, a small capsule made of very heat-conductive metal, so that any variation in the temperature of the body to be controlled is transmitted immediately to the said element (4), and through the same to the microprocessor (1). 3. A wireless telematic thermometer, as claimed in claims 1 and 2, characterised in that the information concerning the temperature obtained by the said probe (4) is periodically sent to the receiver, at predetermined time intervals which may oscillate, preferably, between 5 and 10 minutes 4. A wireless telematic thermometer, as claimed in claims 1 to 3, characterised in that the said buttons (14) of the receiving module both allow one to choose the information to be viewed on the screen (12) and to establish the parameters relating to the latter's operation, such as alarm temperature, measurement system, and others, and in that the acoustic warning means preferably consist of a piezoelectric buzzer (15) and the luminous warning means consist, also preferably, of a Led-type diode (16), controlled by means of a transistor (17).