RU2794043C1 - Multi-channel digital transmission fault recorder - Google Patents

Abstract

FIELD: transport; technological machines.

SUBSTANCE: built-in diagnostic systems for transport and technological machines. Technical result consists in increasing the accuracy of diagnosing elements of mechanical transmissions in real time. The technical result is achieved by the fact that in the claimed multi-channel digital transmission fault recorder installed on board a transport or technological machine, a plurality of temperature sensors, both contact and non-contact, are provided, connected to analog-to-digital converters that are connected to a controller to which a light indicator is connected temperature rise alarm, a temperature rise alarm light, and a seven-segment display showing the number of the temperature sensor that transmitted the temperature rise alarm.

EFFECT: increasing the accuracy of diagnosing elements of mechanical transmissions in real time.

1 cl, 1 dwg

Description

The invention relates to built-in diagnostic systems for transport and technological machines. The main objective of the invention is the diagnosis of mechanical transmission elements (bearings, mechanical transmissions, movable and swivel joints, couplings, cardan joints, etc.).

There is a known method for determining temperature as an indicator of the technical condition of a bearing assembly, based on a system for reading the state of a component of the vehicle running gear [1], which includes a sensor containing an array of infrared reading elements aimed at the zone of the element of the bearing assemblies. The disadvantage of this method is the inability to control the rate of temperature rise of the bearing assembly, as an important diagnostic parameter.

Known registrar failure of transmission elements [2], including two photocells of infrared radiation with different rates of change of resistance, two resistors, which are included in the measuring bridge, in series with one of the photocells connected limiting resistor. The measuring diagonal of the bridge is connected to the comparator input, the output of which is connected to the control electrode of the thyristor, in the executive circuit of which a light indicator is included. The device allows you to record both the fact of reaching the maximum allowable temperature, and the increase in the rate of its increase. The disadvantage of the invention lies in the implementation of the device on the principles of analog electronics, which reduces its accuracy.

A device for measuring the temperature of overheated components of railway wheels based on the measurement of infrared radiation is known, and the device is stationary, the railway wheels move, and the measurement takes place in motion. The disadvantage is the sequential temperature measurement and the impossibility of simultaneous measurement for continuous diagnosis [3].

The closest technical solution is a digital transmission failure recorder containing an infrared radiation photocell, a lens, a light indicator, an analog-to-digital converter connected to the controller. The controller is connected to a light indicator, and the digital recorder is located on board the transport or technological machine. The disadvantage of the device lies in the impossibility of simultaneous diagnosing a plurality of elements of mechanical transmissions, the impossibility of contact temperature measurement, the impossibility of differentiating the operation from exceeding the permissible temperature or the operation from exceeding the permissible rate of temperature increase [4].

The technical result consists in increasing the accuracy of diagnosing elements of mechanical transmissions.

The technical result is achieved due to the fact that a multi-channel digital transmission failure recorder is installed on board a transport or technological machine, contains analog-to-digital converters connected to the controller, a plurality of temperature sensors, both contact and non-contact, connected to analog-to-digital converters, light an overtemperature indicator, an overtemperature indicator light, and at least one seven-segment indicator connected to the controller.

The multi-channel digital transmission fault recorder differs from the prototype in that it contains a plurality of temperature sensors, both contact and non-contact, connected to analog-to-digital converters, a light indicator for exceeding the permissible temperature, a light indicator for exceeding the permissible temperature rate, and at least one seven-segment indicator connected to to the controller.

The scheme of the multi-channel digital transmission fault recorder is shown in Fig.1. The multi-channel digital transmission fault recorder consists of a plurality of temperature sensors 1, both contact and non-contact. The temperature sensors 1 are combined with the elements of the mechanical transmission - the objects of diagnosis, and their number is equal to the number of objects of diagnosis. The temperature sensors 1 are connected to analog-to-digital converters 2, which are connected to the controller 3, in which the temperature control program is recorded. A light indicator of exceeding the permissible temperature 4, a light indicator of exceeding the permissible temperature rise rate 5 and a seven-segment indicator 6 are connected to the controller 3. All elements of the device, with the exception of temperature sensors 1, are installed in the visibility zone of the operator of the transport or technological machine, for example, in the cab, and the electrical circuit device is connected to the on-board power supply. Temperature sensors 1 are installed in close proximity to the diagnosed elements of mechanical transmissions.

The device works as follows. During the operation of a transport or technological machine, heat is released in the elements of mechanical transmissions due to friction. Temperature sensors 1 transmit analog information about temperatures to analog-to-digital converters 2, which form digital signals of measured temperatures and transmit them to controller 3. Controller 3 executes the program recorded in it and takes into account the current temperature value, the current value of the temperature rise rate, the set value of the allowable temperature and the set value of the allowable temperature rise rate for each of the temperature sensors 1. In case of intensive mechanical wear (malfunction) of any of the transmission elements, it begins to release more heat and heats up. If the current temperature value exceeds the set value of the allowable temperature, the controller 3 generates control signals, which include a light indicator of exceeding the allowable temperature 4 and a seven-segment indicator 6 displaying the number of the temperature sensor 1 that transmitted the signal.

If the current value of the temperature increase rate exceeds the set value of the allowable temperature increase rate, the controller 3 generates control signals, which include a light indicator for exceeding the allowable temperature increase rate 5 and a seven-segment indicator 6 displaying the number of the temperature sensor 1 that transmitted the signal.

The use of the recorder makes it possible to simultaneously diagnose a plurality of elements of mechanical transmissions using contact and non-contact sensors, detect a malfunction of a particular transmission element, and also characterize the malfunction by exceeding the permissible temperature or the permissible rate of temperature rise, which increases the information content and accuracy of diagnosis.

Information sources

1. RU 2393441 C2, G01J 5/00 (2006.01), 01/20/2009.

2. RU 199665 U1, G01K 13/08 (2006.01), 09/14/2020.

3. US 5060890 (A), B61K 9/06, 10/29/1991.

4. RU 209 268 U1, G01M 13/02, G01K 13/08, H04N 5/33 (2006.01), 10.02.2022.

Claims (1)

A multi-channel digital transmission failure recorder installed on board a transport or technological machine, containing a temperature sensor, an analog-to-digital converter, a controller, a light indicator, characterized in that it contains a plurality of temperature sensors, both contact and non-contact, connected to analog-to-digital converters, that are connected to a controller that is connected to an overtemperature indicator light, an overtemperature indicator light, and at least one seven-segment indicator.

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