Analog analyzer change the background in the signal processing from buchs
(57) Abstract:Usage: in the automated control systems hot box on railway transport. The inventive device includes a fixation temperature 1-4, the four elements rarefaction write amplifiers 9-11 and the block defining the relationship of the amplitudes of the signals 12. 1 Il. The invention relates to a pulse technique and can be used in automated control systems on the railway transport.Closest to the claimed is an analog analyzer change background when testing the signal from books containing the amplifier associated with the output to the inputs of one and other items write-enable, outputs, each of which is connected to the inputs of the elements of the fixing temperature, and the block determining the ratio of the signal amplitude.A disadvantage of the known device is the low reliability of the detection of overheated journal boxes.The aim of the invention is to increase the reliability of the detection of overheated axle box cars with missing elements of the lower part of the car in the field of view of the optics due to more accurate determination of the amplitude value of thermal pulse from books.the containing power, associated output with inputs of one and other items write-enable, outputs, each of which is connected to the inputs of one and the other elements of the fixing temperature, and the block defining the relationship of the amplitudes of the signals, characterized in that it is equipped with differential amplifiers and additional fixation temperature and elements permit records, the inputs of which are connected to the output of the amplifier, and outputs to the inputs of additional elements fixing temperature, and the outputs of the first and third elements of the fixing temperature is connected to reinvestiruet inputs of one and the other differential amplifiers, respectively, and the outputs of the second, the fourth fixation temperature to the inverting inputs respectively of the first and second differential amplifiers whose outputs are connected to inputs of the block to determine the ratio of the amplitudes of the signals.The drawing shows a functional diagram of the analog analyzer change background in signal processing from books.Analog analyzer change background in signal processing from the books contains elements fixing temperature 1,2,3,4 whose inputs are connected to outputs of the elements permits the recording of 5,6,7,8 sootvetstvenno 1,3 stored values of the amplitudes of thermal pulses and the second one Buchs, respectively, relative to background, connected to reinvestiruet inputs of the differential amplifiers 10, 11 and the fixation temperature of 2,4-values of the amplitudes of thermal pulses from the background on the first and the second values, connected to the inverting inputs of the differential amplifiers 10 and 11, respectively, which is the subtraction of the amplitude of thermal pulses from the background and the amplitudes of thermal pulses of the first and the second books. The outputs of the differential amplifiers 10 and 11 are connected to inputs of the block 12 to determine the ratio of the amplitudes of the signals 12. The output of the circuit is connected to the communication channel.The device operates as follows. When in the field of view of the optics of the first wheel open solution items record of 5.6. The values of the amplitudes of thermal pulse from the pan relative to the background is recorded by the fixation element temperature 1, and the value of the amplitude of thermal pulse background is recorded by the fixation element temperature 2. Stepping into the field of view of the second wheel pair opens the circuit of the recording resolution of 7.8. The value of the amplitude of thermal pulse from the pan is recorded by the fixation element temperature 3, and the value of the amplitude of thermal pulse of the background element fixing temperature 4.After passing zone review optiClient fixing temperature 1,2,3,4, moreover, the values of the amplitudes of thermal pulses and fixation temperature 2,4 come to the inverting inputs of the differential amplifiers 10 and 11 and is subtracted from the values of the amplitudes of thermal pulses stored in the fixation temperature of 1.3, coming to the noninverting inputs of the differential amplifiers, then the values of the amplitudes of thermal pulses of the first and second pair of wheels are received in the block to determine the ratio of the amplitudes of 12.The alarm signal is produced when the ratio of the values of the amplitudes of thermal pulse from the books first, second wheel pairs exceeds a preset value. ANALOG ANALYZER CHANGE the BACKGROUND IN the SIGNAL PROCESSING FROM the BOOKS containing the amplifier associated with the output to the inputs of one and other items write-enable, outputs, each of which is connected to the inputs of one and the other elements of the fixing temperature, and the block defining the relationship of the amplitudes of the signals, characterized in that it is equipped with differential amplifiers and additional fixation temperature and elements permit records, the inputs of which are connected to the output of the amplifier, and outputs to the inputs of additional elements fixing temperature is wow and other differential amplifiers, respectively, and the outputs of the second and fourth elements of the fixing temperature to the inverting inputs respectively of the first and second differential amplifiers whose outputs are connected to inputs of the block to determine the ratio of the amplitudes of the signals.
FIELD: railway transport.
SUBSTANCE: invention relates to auxiliary railway equipment, particularly, to method of revealing and indicating overheating of parts and units of railway vehicle bogies. Using infra-red scanner shots of wheels, axle boxes ands frames of bogies of passing train are taken. Degree of axle box heating is analyzed and decision is taken whether it is in serviceable condition or not. Degree of heating of frame and wheel is analyzed and decision is taken whether wheel or frame is cracked on not.
EFFECT: improved accuracy and reliability of diagnosing condition of units of wheel bogie.
FIELD: transportation, physics.
SUBSTANCE: method for detection of braked wheel pairs in rolling equipment in motion is based on recording power of IR (infrared) radiation from wheel elements within limits of strobe pulse of wheel pair pass fixation sensor located in one section with IR radiation receiver inclined at an angle of 90 degrees to road axis and comparing the amplitudes of thermal signals from wheel elements of one axle. Thermal signals minimums are determined within strobe pulses, current values of thermal signals amplitudes are measured in section of these minimums. According to results of these amplitudes comparison against preset value alarm system signal is generated to stop train for checking the condition of brake equipment. This provides identification of rims, disks and hubs overheating occurrences during train service braking in consequence of wheel pairs blocking when brake equipment is faulty.
EFFECT: improvement of brakes technical condition control reliability, reduction of causeless train delays due to control facilities indications of heated wheel elements IR radiation during service braking.
SUBSTANCE: device to adjust heat control hardware (HCH) of rolling stock running gear comprises supporting structure with outer casing, IR-radiation source imitating heated axle-box, modulator, modulator rotation drive, control components and connector assembly for the device to be connected to HCH to be adjusted. The proposed device incorporates fan to blow the modulator over by outside air, modulator position pickup, thermal screen and shutter made from different-heat conductivity materials and representing disks provided with different number of holes. The said disks are arranged between modulator and radiator and fitted unfixed on motor shaft. The device comprises also microprocessor controller p.c.b., control components and display to output temperatures and HCH adjustment conditions. The modulator is made up of two disks with holes, i.e. outer metal disk making the aforesaid thermal shield, and bearing disk made from heat-insulation material. Both disks are rigidly fitted on the motor shaft spaced a bit apart. The IR-radiation source incorporates electric heater and radiator temperature pickup.
EFFECT: higher accuracy of adjustment, reduced adjustment time.
4 cl, 9 dwg
FIELD: railway transport.
SUBSTANCE: floor chamber receiving capsule incorporates IR-radiation receiver adjustment unit, microprocessor control unit and ADC converter of output signal of the said receiver in digital code. Chamber inlet window gate is arranged on the chamber front wall. Aforesaid gate represents rotary sector crank-driven from step motor and is furnished with two radiators, i.e. passive and active, heaters, temperature pickups, position pickup and gate turn limiters. Floor chamber control microprocessor incorporates programmable memory containing temperature difference values for gate active and passive radiators in measuring circuit automatic control mode.
EFFECT: computerised adjustment and control over operating parametres, higher validity of readings at various ambient destabilising effects.
2 cl, 4 dwg
FIELD: railway transport.
SUBSTANCE: proposed invention comprises receiving IR-radiation by receivers oriented perpendicular to track axis towards wheel hub motion and IR-radiation from wheel elements heated by braking forces. It comprises also isolating thermal signal fragments, within gating pulse from wheel pair pass pickup in preset time interval whereat one wheel pair wheel disk and hub are scanned. It also includes generating alarm signal on availability of braked wheel pair if measured thermal signal values of one wheel pair differs by more than two times and there are no indications of brakes actuation, which is judged upon from the results of wheel pair speed in control zone limited by two surface pickups. Deceleration exceeding preset value, alarm signaling of train stop for brakes check is interlocked to generate "braking in check zone" character.
EFFECT: higher validity of control, reduced number of traffic delays.
FIELD: measurement equipment.
SUBSTANCE: invention refers to instrumentation, namely to devices for contact-free temperature measurement of axle boxes of rolling-stock of railways. Inlet assembly of floor-mounted chamber includes the casing attached to the housing of floor-mounted chamber, inside which a gate is installed with possibility of being turned and equipped with calibration elements of measurement channel of floor-mounted chamber. External and protective openings respectively are made in the casing and housing of floor-mounted chamber. Gate is made in the form of a ball from waterproof material with through cylindrical hole. Ball rotation axis is located eccentrically to its centre and perpendicular to axis of cylindrical hole. External opening of casing is round and has an edge from waterproof material and is arranged coaxially to protective opening of the housing. In protective opening of the housing there installed is plate from abrasion-resistant material for example leucosapphire. Gate is equipped with cleaning brushes.
EFFECT: increasing scheduled maintenance period of floor-mounted chambers with simultaneous reduction of background illumination of measurement channel of floor-mounted chamber.
SUBSTANCE: proposed method relates to measurement assurance of contactless device of thermal control and may be used at rolling stock axle box temperature control devices. Proposed method comprises arranging external check passive and active irradiators opposite protective glass. Passive irradiator features temperature T1 equal to ambient temperature while active irradiator features temperature T2 higher than T1. It comprises also registering responses to effects of check irradiators formed as equivalent temperatures T'1 and T'2, and estimating relation n=T'1/T1·T2/T'2, and at n>γ+1, where γ=Δ/T1 is relative error of measurement at T1, while Δ is nameplate mean square measurement error of thermal control device. It includes also performing routine maintenance of protective glass.
EFFECT: higher accuracy of measurements.
SUBSTANCE: invention relates to railway transport. Proposed method of identification in contactless thermal control by IR hardware proceeds from analysis of bearing heating in every rolling stock unit. Availability of cylindrical or taper bearings is decided on by comparing with preset threshold Qthreshol of indicator Qmean i.e, ratio of mean average excess temperature of bearing assemblies (axle boxes) on even mounted axles to those on odd mounted axles, that is, dTthreshol even-to-dTmean_even ratio. In case indicator Qmean_= dTmean_even /K* dTmean_even >Qthreshold, then, for both taper and cylindrical bearings of rolling stock unit automatically set are higher thresholds of axle box overheating registration, while if Qmean= dTmean_even /K* dTmean_even <Qthreshold, then, for rolling stock cylindrical bearings, set are invariable or decreased said thresholds with due allowance for the fact that numerical values of factor K* are selected from the range of 1.00, 1.05…1.15 and so on depending on quantity of mounted axles in rolling stock units.
EFFECT: higher validity of identification and estimation of serviceability.
SUBSTANCE: invention relates to railway transport, particularly to heat diagnostics of rolling stock running gear parts with the help of thermistor receivers of IR receivers, that is, bolometers. Thermistor bolometer with immersion germanium lens is arranged in case with circular spherical surface. Bolometer attachment fitting body is arranged in mating ball surface of thermal barrel and locked by yoke. Bolometer optimum temperature is maintained by heaters built in thermal barrel grooves. Bolometer temperature gage is secured opposite the thermal barrel heaters. To trap out dust and moisture sleeve with circular crosswise baffles is fitted in thermal barrel upstream of bolometer. Flap with radiators to simulate the box is composed of turn sector is secured directly at step motor shaft mounted at chamber baffle. Chamber front cover in inlet zone accommodates adapter with heating elements, sleeve with transverse ribs and thermal barrel sleeve.
EFFECT: higher reliability, decreased electric power consumption.
SUBSTANCE: method consists in conversion of IR radiation energy of thermal control objects - bearings and journal-boxes - into electric signals with presentation of intermediate results in the form of digital code characterising heating level of objects relative to ambient air temperature in standard units - ADC quanta. To improve reliability of evaluation of bearing and axle equipment condition in the whole it is proposed to calculate ADC quantum value from Plank integral formula in radiation density units according to results of calibration and testing of amplifier channels in autocontrol mode. Herewith, bearing (journal-box) temperature is determined by multiplying its heating in quanta by quantum value in radiation densities with regard to radiation density of running gears having ambient air temperature according to piecewise linear approximation polynom of Plank formula or according to precalculated charts of controlled objects radiation densities and their temperature correlation. These charts are stored in memory of microprocessor controller or automated workstation (AWS) computer of thermal control facilities.
EFFECT: higher reliability of thermal condition evaluation of bearings and axle equipment of moving rail rolling-stock.
3 cl, 2 dwg