SU1304802A1 - Temperature sensitive element of biologically active points on skin surface of animals - Google Patents

Abstract

The invention relates to veterinary technology, namely to devices for 8 TS diagnostics in veterinary akku and elektropunktury. The invention aims to expand the functionality of the sensor. The measuring junction 1 of the thermocouple (ICT) is located inside the holder 8 connected to the thermostat 6. The thermal resistance of the holder 8 is equal to the thermal resistance of the coat of the animal. In the thermostat 6 posted output-heat pipe 5 with non-measuring thermocouple thermocouple (NST). The ICT is fixed at a biologically active point on the surface of the animal's skin. The electric heating circuit at the same time maintains the temperature of the NST at a constant level by controlling the temperature of the heat-conductor line 5 by a temperature-sensitive element. The signal from the ICT is fixed on the measuring device 3. 1 hp f-ly, 3 ill. i (L SO about 4 OO about Yu Figure 1

Description

The invention relates to veterinary technology, namely, devices for diagnostics in veterinary akku- and e-acupuncture.

The aim of the invention is to enhance the functionality of the sensor. FIG. I shows the device, a general view; in fig. 2 - output-heat conductor; in fig. 3 - electrical circuit, containing electrical heating.

The temperature sensor of biologically active points on the skin of animals consists of a thermocouple measuring spa 1, an electrode 2, which is connected to a measuring device 3, an electrode 4 connected with a lead-heat pipe 5 and a thermostat 6 located inside with a heating element 7. The working junction 1 of the thermocouple is placed in the holder 8. The output-heat pipe 5 is connected to the measuring device 3 and the non-measuring junction 9 of the thermocouple.

The lead-heat line 5 is separated from the heating element 7. The surface of the lead-heat line 5, to which the thermocouple electrode 4 is welded, is the plane e. legal symmetry of the non-measuring spa 9. Inside the output-heat conductor 5 of the non-measuring spa 9 there is a temperature-sensitive element 10, electrically isolated from the output-heat exchanger 5 and forming a small thermal resistance.

An electrical circuit with a heating element consists of measuring 1 and non-measuring 9 thermocouple junctions, a heat conductor output 5, electrodes 2 and 4, and a measuring device 3. A circuit containing element 7 is connected to thermal circuit element 5 of this circuit through a small thermal resistance. heating, a temperature-sensitive element 10, a regulating transistor 11, an operational amplifier 12, a reference voltage source 13, a current source 14.

In this case, the holder 8 is made of a material, the thermal resistance of which is equal to the thermal resistance of the coat of the animal.

The temperature sensor works as follows.

The measuring junction 1 of the thermocouple is fixed at a biologically active point on the surface of the skin of an agricultural animal, which is searched for by any of the known methods. The sensor is fixed at the point under study by mechanically pressing the time sufficient to warm up the junctions. Turning on the electric circuit

0

Heating the non-measuring spa 9 leads to the fact that the heating of the output-heat conductor 5 occurs until the voltage drop on the temperature-sensitive element 10 becomes equal to the reference voltage. In this case, the control transistor 11, controlled through the operational amplifier 12, is closed and the heating is stopped. After cooling the heat conduit 5 and associated with it through the small thermal resistance of the non-measuring spa 9 of the thermocouple and the temperature-sensitive element 10, the time constant of which is much less than the thermal constant of the heat conductor 5

5 by the order of magnitude, the cycle repeats.

The constancy of the temperature of the heat conductor 5 ensures the constancy of the temperature of the thermocouple unmeasuring spa 9. From the measuring spa 1 of the thermocouple, the signal corresponding to the detected temperature of the biologically active point on the body of the animal is recorded on the measuring device 3.

Claims (2)

1. Sensor of temperature of biologically active points on the skin of animals, containing a thermocouple with an element of artificial heating of one of the junctions, 0 placed in a thermostat, characterized in that, in order to expand the functionality of the sensor, the thermostat is made in the form of a hollow cylinder, one end of which is closed by a lid with a holder, the thermal resistance of which is equal to the thermal resistance of the scratched cover, and the thermocouple measuring junction is located inside the holder. 2. A sensor according to claim 1, characterized in that the first electrode of the measuring spa 0 thermocouples are connected to the measuring junction located on the surface of the output-heat conductor located in the thermostat; the heating element is connected to the output amplifier and the first input of the operational amplifier through the low thermal resistance; the input of which is connected to the source of the reference voltage, while the output of the operating force of the bodies is connected to the base of the regulating transistor, and the output terminals of the sensor are connected to the output at the heat conductor and the second electrode of the measuring spa, respectively. .five J ffIN In ///////////////////% / A At /////////////. FIG. 2 -I- / 55 Compiled by V. Andrievsky Editor L. LangazoTechred I. VeresKorrektor I. Erdeyi Order 1332/2 Circulation 596 Subscription VNIIPI USSR State Committee for Inventions and Discoveries I 13035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4 Fig.Z