CN113091858A - In-situ calibration device for lubricating oil mass - Google Patents
In-situ calibration device for lubricating oil mass Download PDFInfo
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Abstract
The invention relates to an in-situ calibration device for the oil mass of lubricating oil, which comprises an overhaul module, an acquisition module and a central control module, wherein the overhaul module is used for detecting whether a lubricating oil sensor and an oil mass indicator are correctly connected or not; the central control module is connected into the oil indicator by providing constant current for the calibration device through a constant current source, is connected with a fixed resistor in series, calculates the current value in the circuit by collecting the voltage at two ends of the fixed resistor, combines and adjusts the voltage in the circuit according to the resistance value of the lubricating oil sensor to obtain the resistance value of analog output and transmits the resistance value to the analog output resistance module; the analog output resistance module is used for receiving a resistance value of analog output, and the resistance value of the analog output is used for calibrating the lubricating oil indicator; the calibration module and the central control module are connected with the calibration module for adjustment.
Description
Technical Field
The invention relates to the technical field of oil mass in-situ calibration, in particular to an in-situ calibration device for the oil mass of lubricating oil.
Background
The in-situ calibration device for the lubricating oil quantity is a special device for calibrating a lubricating oil quantity indicator of a certain airplane, and has the function of calibrating the lubricating oil quantity indicator to accurately display the lubricating oil quantity and ensure the normal work of a lubricating oil indicating system of the airplane. The lubricating oil mass normal position calibrating device can calibrate according to the traditional mode, and can also directly input calibration data to calibrate the lubricating oil mass indicator, thereby reducing the workload of maintenance personnel. The lubricating oil mass in-situ calibration device can store calibrated data, and is convenient for later use and checking.
The problem that the calibration is inaccurate often appears in the continuous use process of calibrating device among the prior art, how to improve the accurate calibration work of calibrating device to lubricating oil quantity indicator and become the problem that awaits solution for the airline.
Disclosure of Invention
Therefore, the invention provides an in-situ calibration device for the amount of lubricating oil, which is used for solving the problem of how to improve the accurate calibration work of the calibration device on the amount indicator of the lubricating oil in the prior art.
In order to achieve the above object, the present invention provides an in-situ calibration apparatus for the amount of lubricating oil, comprising:
the maintenance module is used for detecting whether the lubricating oil sensor and the oil quantity indicator are correctly connected or not and transmitting a maintenance result to the central control module;
the acquisition module comprises a plurality of lubricating oil sensors, the plurality of lubricating oil sensors provide stable current through a constant current source to measure the quantity of lubricating oil, and the acquisition module receives the current value of the constant current source and the voltage values at two ends of the lubricating oil sensors measured by a voltmeter to obtain the resistance value of the lubricating oil sensors and transmits the resistance value to the central control module;
the central control module is connected into the oil quantity indicator by supplying constant current to the calibrating device through a constant current source, is connected with a fixed resistor in series, calculates the current value in a circuit by collecting the voltage at two ends of the fixed resistor, combines the resistance value of the lubricating oil sensor with the voltage in the regulating circuit to obtain the resistance value of analog output and transmits the resistance value to the analog output resistance module, and the central control module is also connected with the data storage module and is used for storing the data of the calibrating device;
the analog output resistance module is connected with the central control module and used for receiving the resistance value of the analog output, and the resistance value of the analog output is used for calibrating the lubricating oil indicator;
the calibration module comprises three modes of manual calibration, acquisition calibration and default calibration, wherein the manual calibration is used for calibrating the lubricating oil indicator by directly inputting calibration data, the acquisition calibration is used for calibrating the lubricating oil indicator by acquiring data of the lubricating oil sensor in real time, the default calibration is used for calibrating the lubricating oil indicator by a default calibration value, the calibration module is connected with the central control module by the analog output resistance module, and the central control module is used for adjusting working parameters of the calibration module;
the display module is connected with the central control module and used for displaying the calibration parameters of the calibration module;
the input module is connected with the central control module and used for outputting instructions to control the central control module;
the central control module receives data transmitted by m oil sensors transmitted by the acquisition module at a time T1, sets the average value of the resistance measured by the m oil sensors to be Rt1, sets the preset value of the resistance of the oil sensor to be R0, determines the resistance value of the analog output according to the difference range of the average value of the resistance Rt1 measured by the oil sensor at the time T1 and the preset value of the resistance of the oil sensor R0, and determines the number of the data transmitted by the oil sensor received at the time T2 according to the magnitude relation of the average value of the resistance Rt1 measured by the oil sensor at the time T1 and the preset value of the resistance of the oil sensor R0;
the central control module receives data transmitted by a preset number of oil sensors transmitted by the acquisition module at a T2 moment, sets the average value of resistance measured by the oil sensors at a T2 moment to be Rt2, determines the number of the data transmitted by the oil sensors at a T3 moment according to the magnitude relation of Rt2 and R0 and the relation of the Rt2-Rt1 and Ri in a difference matrix, and determines the resistance value of analog output according to the difference range of the average value of resistance Rt1 measured by the oil sensors at a T1 moment and the average value of resistance Rt2 measured by the oil sensors at a T2 moment and the preset value R0 of the resistance of the oil sensors;
the central control module receives data transmitted by a preset number of oil sensors transmitted by the acquisition module at a time T3, the average value of the resistance measured by the oil sensors received at a time T3 is set to be Rt3, the central control module determines the resistance value of the analog output according to the average value of the resistance Rt2 measured by the oil sensors at a time T2 and the difference range of the average value of the resistance Rt3 measured by the oil sensors at a time T3 and the preset value R0 of the resistance of the oil sensors, and determines the value of the oil indicator according to the resistance value of the analog output.
Further, when the collection calibration is selected, at the time of T1, the central control module receives data transmitted by the m oil sensors transmitted by the collection module, sets the average value of the resistances measured by the m oil sensors to be Rt1, sets the preset value of the resistance of the oil sensor to be R0,
if the Rt1 is larger than or equal to R0, the number of the data transmitted by the oil sensor received by the central control module at the T2 moment is m + 2;
if Rt1 is less than R0, the number of the data transmitted by the oil sensor received by the central control module at the time T2 is m + 1.
Furthermore, a difference matrix R and a resistance value Rm of analog output are preset in the central control module,
for the difference matrix R (R1, R2, R3 … Rn), wherein R1 represents a first preset difference, R2 represents a second preset difference, R3 represents a third preset difference, and Rn represents an nth preset difference;
a resistance value Rm (Rm1, Rm2, Rm3 … Rmn) for the analog output, where Rm1 represents a resistance value of a first preset analog output, Rm2 represents a resistance value of a second preset analog output, Rm3 represents a resistance value of a third preset analog output, and Rmn represents a resistance value of an nth preset analog output.
Further, the central control module determines the resistance value of the analog output according to the difference range of the resistance average value Rt1 measured by the oil sensor at the time T1 and the preset value R0 of the resistance of the oil sensor,
if the | Rt1-R0| ≦ R1, the central control module adjusts the resistance value of the analog output to be RS1, and RS1 ═ Rt1+ Rm 1-R0;
if R1 < | Rt1-R0| ≦ R2, the resistance value of the analog output adjusted by the central control module is RS1, and RS1 ═ Rt1+ Rm 2-R0;
if R2 < | Rt1-R0| ≦ R3, the resistance value of the analog output adjusted by the central control module is RS1, and RS1 ═ Rt1+ Rm 3-R0;
and if R (n-1) < | Rt1-R0| ≦ Rn, the central control module adjusts the resistance value of the analog output to be RS1, and RS1 ═ Rt1+ Rmn-R0.
Further, the central control module receives the data transmitted by the oil sensor at the time T2 according to the number of the oil sensor data received at the time T2 determined at the time T1, the average value of the resistance measured by (m +1) or (m +2) oil sensors is set as Rt2, the difference value DeltaRt 21 is set as | Rt2-Rt1|,
when the number of the collected oil sensors is (m +1), comparing Rt2 with R0,
if Rt2 is less than R0, the number of the data transmitted by the oil sensor received by the central control module at the time of T3 is m +1+ 1;
if the Rt2 is larger than or equal to R0, the central control module determines the number of data transmitted by the oil sensor received at the time of T3 according to the Delta Rt 21;
when the number of the collected oil sensors is (m +2), the central control module determines the number of the data transmitted by the oil sensors received at the time T3 according to the Δ Rt 21.
Further, when the central control module determines the number of the data transmitted by the oil sensor received at the time T3 according to the Δ Rt21,
if the delta Rt21 is not more than R1, the central control module determines that the number of the data transmitted by the oil sensor received at the T3 moment is m +1+ 1;
if R1 < [ delta ] Rt21 is not less than R2, the central control module determines that the number of data transmitted by the oil sensor received at the time of T3 is m +1+ 2;
if R2 < [ delta ] Rt21 is not less than R3, the central control module determines that the number of data transmitted by the oil sensor received at the time of T3 is m +1+ 3;
if R (n-1) < delta Rt21 is not more than Rn, the central control module determines that the number of the data transmitted by the oil sensor received at the time T3 is n;
the maximum number of the plurality of lubricating oil sensors is set to be n, m is set to be less than or equal to n, and if m +1 is greater than or equal to n, n is taken as the standard.
Further, the central control module determines the resistance value of the analog output according to the difference range of the resistance average value Rt2 measured by the oil sensor at the time T2 and the preset value R0 of the resistance of the oil sensor,
if the | Rt2+ Rt1- (2 × R0) | is less than or equal to R1, the resistance value of the analog output is adjusted to be RS2 by the central control module, and RS2 ═ Rt2+ Rm 1-R0;
if R1 < | Rt2+ Rt1- (2 xR 0) | is less than or equal to R2, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 ═ Rt2+ Rm 2-R0;
if R2 < | Rt2+ Rt1- (2 xR 0) | is less than or equal to R3, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 ═ Rt2+ Rm 3-R0;
and if R (n-1) < | Rt2+ Rt1- (2 xR 0) | is less than or equal to Rn, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 is Rt2+ Rmn-R0.
Furthermore, the central control module receives the data transmitted by the oil sensor at the time T3 according to the number of the data of the oil sensor received at the time T3 determined at the time T2, the average value of the resistance measured by the oil sensor received at the time T3 is set to Rt3, the central control module determines the resistance value of the analog output according to the difference range of the average value of the resistance Rt3 measured by the oil sensor at the time T3 and the preset value R0 of the resistance of the oil sensor,
if the | Rt2+ Rt3- (2 × R0) | is less than or equal to R1, the resistance value of the analog output is adjusted to be RS3 by the central control module, and RS3 ═ Rt3+ Rm 1-R0;
if R1 < | Rt2+ Rt3- (2 xR 0) | is less than or equal to R2, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 ═ Rt3+ Rm 2-R0;
if R2 < | Rt2+ Rt3- (2 xR 0) | is less than or equal to R3, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 ═ Rt3+ Rm 3-R0;
and if R (n-1) < | Rt2+ Rt3- (2 xR 0) | is less than or equal to Rn, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 is Rt3+ Rmn-R0.
Further, an oil indicator matrix H (H1, H2, H3 … Hn) is preset in the central control module, wherein H1 represents a first preset oil indicator, H2 represents a second preset oil indicator, H3 represents a third preset oil indicator, and Hn represents an nth preset oil indicator.
Furthermore, the central control module determines the oil indicator H according to the resistance value RSi of the analog output, sets i to be 1, 2 and 3,
if RSi is not more than Rm1, the central control module adjusts the indicated value of the lubricating oil indicator to be H1;
if Rm1 is larger than RSi and is not larger than Rm2, the indicated value of the lubricating oil indicator is adjusted to be H2 by the central control module;
if Rm2 is larger than RSi and is not larger than Rm3, the indicated value of the lubricating oil indicator is adjusted to be H3 by the central control module;
and if Rm (n-1) < RSi and not more than Rmn, the central control module adjusts the indicated value of the lubricating oil indicator to be Hn.
Compared with the prior art, the invention has the advantages that by providing the lubricating oil mass in-situ calibration device, the resistance value of the lubricating oil sensor is obtained by the acquisition module, the central control module is connected into the oil quantity indicator by providing constant current by the calibration device through a constant current source and is connected with a fixed resistor in series, the current value in the circuit is calculated by collecting the voltage at the two ends of the fixed resistor, the central control module combines the voltage in the regulating circuit according to the resistance value of the lubricating oil sensor to obtain the resistance value of analog output and transmits the resistance value to the analog output resistance module, the calibration work of the lubricating oil indicator is completed by simulating the output resistance value, the system error of the calibration device is reduced by the resistance value of the lubricating oil sensor and the simulation output resistance value, and the accurate calibration degree of the calibration device to the lubricating oil indicator is improved.
Particularly, the data of the oil sensors at the time of T1 are collected, the number of the oil sensors at the time of T2 is determined according to the number of the oil sensors collected at the first time, the number of the oil sensors at the time of T3 is determined according to the number of the oil sensors collected at the second time, and the number of the oil sensors from the time of T1 to the time of T3 is in an increasing state theoretically, so that the accurate degree of the oil indicator is required to be higher when the oil quantity is continuously reduced in a use state, particularly in a flying process, the oil indicator is required to be more accurate when the oil quantity is more late, the accurate calibration work of the calibration device on the oil indicator is met, and the accurate calibration degree of the calibration device on the oil indicator is further improved.
In particular, the present invention determines the resistance value of the analog output by the difference range of the average value Rt1 of the resistance measured by the oil sensor at the time T1 and the preset value R0 of the resistance of the oil sensor, and determines the resistance value of the analog output at the time T2 based on the difference range of the average value Rt1 of the resistance measured by the oil sensor at the time T1 and the average value Rt2 of the resistance measured by the oil sensor at the time T2 and the preset value R0 of the resistance of the oil sensor, determines the resistance value of the analog output at the time T3 based on the difference range of the average value Rt2 of the resistance measured by the oil sensor at the time T2 and the average value Rt3 of the resistance measured by the oil sensor at the time T3 and the preset value R0 of the resistance of the oil sensor, realizes different adjustment operations of the oil indicators at different times by calculating the average values of the resistances measured by the three times, and subtracts the preset value of the resistance of twice from the sum of the time T2 and the time T1, the error of operation is reduced to a certain extent, and the accurate calibration degree of the calibration device for the lubricating oil quantity indicator is further improved.
Furthermore, the calibration device provided by the embodiment of the invention can perform calibration work in a traditional mode, and can also directly input calibration data to calibrate the lubricating oil quantity indicator, so that the workload of maintenance personnel is reduced. The calibration device can store the calibrated data, is convenient for later use and check, and further improves the accurate calibration degree of the calibration device to the lubricating oil quantity indicator for adjusting and replacing the working condition of the lubricating oil sensor.
Drawings
FIG. 1 is a functional block diagram of an in-situ calibration apparatus for the amount of lubricant according to an embodiment of the present invention;
fig. 2 is a schematic frame diagram of the device for calibrating the amount of lubricant in situ according to the embodiment of the invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1-2, the present invention provides an in-situ calibration apparatus for the amount of lubricant, comprising: and the maintenance module is used for detecting whether the lubricating oil sensor and the oil quantity indicator are correctly connected or not and transmitting a maintenance result to the central control module. The collection module, it includes a plurality of lubricating oil sensors, and is a plurality of lubricating oil sensor provides stable electric current through the constant current source and measures the lubricating oil quantity, collection module receives the current value of constant current source and voltmeter measurement the voltage value at lubricating oil sensor both ends reachs the resistance value of lubricating oil sensor and transmission to well accuse module. The central control module is connected with the oil quantity indicator by supplying constant current to the calibrating device through a constant current source, is connected with a fixed resistor in series, calculates the current value in a circuit by collecting the voltage at two ends of the fixed resistor, combines the voltage in an adjusting circuit according to the resistance value of the lubricating oil sensor to obtain the resistance value of analog output and transmits the resistance value to the analog output resistance module, and the central control module is also connected with the data storage module and is used for storing the data of the calibrating device. The analog output resistance module is connected with the central control module and used for receiving the resistance value of the analog output, and the resistance value of the analog output is used for calibrating the lubricating oil indicator. The calibration module comprises three modes of manual calibration, acquisition calibration and default calibration, wherein the manual calibration calibrates the lubricating oil indicator by directly inputting calibration data, the acquisition calibration calibrates the lubricating oil indicator by acquiring data of the lubricating oil sensor in real time, the default calibration calibrates the lubricating oil indicator by a default calibration value, the calibration module is connected with the central control module by the analog output resistance module, and the central control module adjusts working parameters of the calibration module. And the display module is connected with the central control module and is used for displaying the calibration parameters of the calibration module. And the input module is connected with the central control module and used for outputting instructions to control the central control module.
Specifically, in the embodiment of the present invention, the central control module receives, at a time T1, data transmitted by m oil sensors transmitted by the acquisition module, sets an average value of resistances measured by the m oil sensors as Rt1, sets a preset value of a resistance of the oil sensor as R0, determines a resistance value of the analog output according to a difference range between an average value of resistances Rt1 measured by the oil sensor at the time T1 and a preset value of a resistance of the oil sensor R0, and determines the number of data transmitted by the oil sensor received at the time T2 according to a magnitude relation between an average value of resistances Rt1 measured by the oil sensor at the time T1 and a preset value of a resistance of the oil sensor R0.
Specifically, in the embodiment of the present invention, the central control module receives data transmitted by a preset number of oil sensors transmitted by the acquisition module at a time T2, sets an average value of resistances measured by the oil sensors at a time T2 as Rt2, determines the number of data transmitted by the oil sensors received at the time T3 according to a magnitude relationship between Rt2 and R0 and a relationship between | Rt2-Rt1| and Ri in a difference matrix, and determines the resistance value of the analog output according to a difference range between an average value of resistances Rt1 measured by the oil sensors at a time T1 and an average value of resistances Rt2 measured by the oil sensors at a time T2 and a preset value R0 of resistances of the oil sensors.
Specifically, in the embodiment of the present invention, the central control module receives data transmitted by a preset number of oil sensors transmitted by the acquisition module at a time T3, sets the average value of the resistances measured by the oil sensors received at the time T3 as Rt3, determines the resistance value of the analog output according to the difference range between the average value of the resistances measured by the oil sensors at the time T2 Rt2 and the average value of the resistances measured by the oil sensors at the time T3 Rt3 and the preset value R0 of the resistances of the oil sensors, and determines the value of the oil indicator according to the resistance value of the analog output.
Specifically, in the embodiment of the present invention, the time T1 is earlier than the time T2, and the time T2 is earlier than the time T3, but the specific time interval between T1 and T2, T3 is not specifically limited in the present invention, and may be determined according to the flight time of the aircraft, or according to the amount of fuel.
Specifically, in the embodiment of the invention, data of the oil sensors at the time T1 are collected, the number of the oil sensors at the time T2 is determined by the number of the oil sensors collected at the first time, the number of the oil sensors at the time T3 is determined by the number of the oil sensors at the second time, and the number of the oil sensors from the time T1 to the time T3 is theoretically in an increasing state, so that the accurate degree of the oil indicator is required to be higher when the oil quantity is continuously reduced in a use state, particularly when the oil indicator is in a flight process, the later section of the airplane is more accurate, the accurate calibration work of the calibration device on the oil indicator is met, and the accurate calibration degree of the calibration device on the oil indicator is further improved.
Specifically, in the embodiment of the present invention, the preset value R0 of the oil sensor resistance may be set as the maximum value of the oil sensor resistance, or may also be the minimum value or the average value of the oil sensor resistance.
Specifically, when the calibration device is started, the maintenance module in the embodiment of the invention firstly enters a self-test picture, determines whether the lubricating oil sensor and the oil quantity indicator are correctly connected, enters a calibration interface after the self-test of the calibration device is finished, and reduces the analog output resistance if the oil quantity indicator displays that the oil quantity is smaller than the oil quantity of the caliper; if the oil indicator shows that the oil volume is greater than the caliper oil volume, the analog output resistance is increased. When the calibration device runs, three modes of default calibration, acquisition calibration and manual calibration can be used, firstly, in the default calibration process, the calibration device calibrates the oil indicator through the analog output resistance value preset in the system, and the manual calibration can calibrate the oil indicator independently and can also be matched with the default calibration to calibrate more accurately. And after default calibration is performed, if the oil quantity display is inaccurate, manual calibration can be used for performing supplementary calibration.
Specifically, in the embodiment of the present invention, during the selection of the collection calibration, at the time T1, the central control module receives data transmitted by m oil sensors transmitted by the collection module, sets an average value of resistances measured by the m oil sensors to be Rt1, sets a preset value of a resistance of the oil sensor to be R0,
if the Rt1 is larger than or equal to R0, the number of the data transmitted by the oil sensor received by the central control module at the T2 moment is m + 2;
if Rt1 is less than R0, the number of the data transmitted by the oil sensor received by the central control module at the time T2 is m + 1.
Specifically, in the embodiment of the present invention, a difference matrix R and a resistance value Rm of the analog output are preset in the central control module,
for the difference matrix R (R1, R2, R3 … Rn), wherein R1 represents a first preset difference, R2 represents a second preset difference, R3 represents a third preset difference, and Rn represents an nth preset difference;
a resistance value Rm (Rm1, Rm2, Rm3 … Rmn) for the analog output, where Rm1 represents a resistance value of a first preset analog output, Rm2 represents a resistance value of a second preset analog output, Rm3 represents a resistance value of a third preset analog output, and Rmn represents a resistance value of an nth preset analog output.
Specifically, in the embodiment of the invention, the central control module determines the resistance value of the analog output according to the difference range between the average value Rt1 of the resistance measured by the oil sensor at the time T1 and the preset value R0 of the resistance of the oil sensor,
if the | Rt1-R0| ≦ R1, the central control module adjusts the resistance value of the analog output to be RS1, and RS1 ═ Rt1+ Rm 1-R0;
if R1 < | Rt1-R0| ≦ R2, the resistance value of the analog output adjusted by the central control module is RS1, and RS1 ═ Rt1+ Rm 2-R0;
if R2 < | Rt1-R0| ≦ R3, the resistance value of the analog output adjusted by the central control module is RS1, and RS1 ═ Rt1+ Rm 3-R0;
and if R (n-1) < | Rt1-R0| ≦ Rn, the central control module adjusts the resistance value of the analog output to be RS1, and RS1 ═ Rt1+ Rmn-R0.
Specifically, in the embodiment of the invention, the central control module receives the data transmitted by the oil sensor at the time T2 according to the number of the oil sensor data received at the time T2 determined at the time T1, sets the average value of the resistances measured by (m +1) or (m +2) oil sensors to be Rt2, sets the difference value Δ Rt21 ═ Rt2-Rt1|,
when the number of the collected oil sensors is (m +1), comparing Rt2 with R0,
if Rt2 is less than R0, the number of the data transmitted by the oil sensor received by the central control module at the time of T3 is m +1+ 1;
if the Rt2 is larger than or equal to R0, the central control module determines the number of data transmitted by the oil sensor received at the time of T3 according to the Delta Rt 21;
when the number of the collected oil sensors is (m +2), the central control module determines the number of the data transmitted by the oil sensors received at the time T3 according to the Δ Rt 21.
Specifically, in the embodiment of the invention, when the central control module determines the number of the data transmitted by the oil sensor received at the time point T3 according to the Δ Rt21,
if the delta Rt21 is not more than R1, the central control module determines that the number of the data transmitted by the oil sensor received at the T3 moment is m +1+ 1;
if R1 < [ delta ] Rt21 is not less than R2, the central control module determines that the number of data transmitted by the oil sensor received at the time of T3 is m +1+ 2;
if R2 < [ delta ] Rt21 is not less than R3, the central control module determines that the number of data transmitted by the oil sensor received at the time of T3 is m +1+ 3;
if R (n-1) < delta Rt21 is not more than Rn, the central control module determines that the number of the data transmitted by the oil sensor received at the time T3 is n;
the maximum number of the plurality of lubricating oil sensors is set to be n, m is set to be less than or equal to n, and if m +1 is greater than or equal to n, n is taken as the standard.
Specifically, in the embodiment of the invention, the central control module determines the resistance value of the analog output according to the difference range between the average value Rt2 of the resistance measured by the oil sensor at the time T2 and the preset value R0 of the resistance of the oil sensor,
if the | Rt2+ Rt1- (2 × R0) | is less than or equal to R1, the resistance value of the analog output is adjusted to be RS2 by the central control module, and RS2 ═ Rt2+ Rm 1-R0;
if R1 < | Rt2+ Rt1- (2 xR 0) | is less than or equal to R2, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 ═ Rt2+ Rm 2-R0;
if R2 < | Rt2+ Rt1- (2 xR 0) | is less than or equal to R3, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 ═ Rt2+ Rm 3-R0;
and if R (n-1) < | Rt2+ Rt1- (2 xR 0) | is less than or equal to Rn, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 is Rt2+ Rmn-R0.
Specifically, in the embodiment of the present invention, the central control module receives the data transmitted by the oil sensor at the time T3 according to the number of the oil sensor data received at the time T3 determined at the time T2, sets the average value of the resistances measured by the oil sensor received at the time T3 to Rt3, determines the resistance value of the analog output according to the difference range between the average value of the resistances Rt3 measured by the oil sensor at the time T3 and the preset value R0 of the resistance of the oil sensor,
if the | Rt2+ Rt3- (2 × R0) | is less than or equal to R1, the resistance value of the analog output is adjusted to be RS3 by the central control module, and RS3 ═ Rt3+ Rm 1-R0;
if R1 < | Rt2+ Rt3- (2 xR 0) | is less than or equal to R2, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 ═ Rt3+ Rm 2-R0;
if R2 < | Rt2+ Rt3- (2 xR 0) | is less than or equal to R3, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 ═ Rt3+ Rm 3-R0;
and if R (n-1) < | Rt2+ Rt3- (2 xR 0) | is less than or equal to Rn, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 is Rt3+ Rmn-R0.
Specifically, in the embodiment of the present invention, an oil indicator matrix H (H1, H2, H3 … Hn) is preset in the central control module, where H1 represents a first preset oil indicator, H2 represents a second preset oil indicator, H3 represents a third preset oil indicator, and Hn represents an nth preset oil indicator.
Specifically, in the embodiment of the present invention, the central control module determines the oil indicator H according to the resistance value RSi of the analog output, sets i to 1, 2, and 3,
if RSi is not more than Rm1, the central control module adjusts the indicated value of the lubricating oil indicator to be H1;
if Rm1 is larger than RSi and is not larger than Rm2, the indicated value of the lubricating oil indicator is adjusted to be H2 by the central control module;
if Rm2 is larger than RSi and is not larger than Rm3, the indicated value of the lubricating oil indicator is adjusted to be H3 by the central control module;
and if Rm (n-1) < RSi and not more than Rmn, the central control module adjusts the indicated value of the lubricating oil indicator to be Hn.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a lubricating oil mass normal position calibrating device which characterized in that includes:
the maintenance module is used for detecting whether the lubricating oil sensor and the oil quantity indicator are correctly connected or not and transmitting a maintenance result to the central control module;
the acquisition module comprises a plurality of lubricating oil sensors, the plurality of lubricating oil sensors provide stable current through a constant current source to measure the quantity of lubricating oil, and the acquisition module receives the current value of the constant current source and the voltage values at two ends of the lubricating oil sensors measured by a voltmeter to obtain the resistance value of the lubricating oil sensors and transmits the resistance value to the central control module;
the central control module is connected into the oil quantity indicator by supplying constant current to the calibrating device through a constant current source, is connected with a fixed resistor in series, calculates the current value in a circuit by collecting the voltage at two ends of the fixed resistor, combines the resistance value of the lubricating oil sensor with the voltage in the regulating circuit to obtain the resistance value of analog output and transmits the resistance value to the analog output resistance module, and the central control module is also connected with the data storage module and is used for storing the data of the calibrating device;
the analog output resistance module is connected with the central control module and used for receiving the resistance value of the analog output, and the resistance value of the analog output is used for calibrating the lubricating oil indicator;
the calibration module comprises three modes of manual calibration, acquisition calibration and default calibration, wherein the manual calibration is used for calibrating the lubricating oil indicator by directly inputting calibration data, the acquisition calibration is used for calibrating the lubricating oil indicator by acquiring data of the lubricating oil sensor in real time, the default calibration is used for calibrating the lubricating oil indicator by a default calibration value, the calibration module is connected with the central control module by the analog output resistance module, and the central control module is used for adjusting working parameters of the calibration module;
the display module is connected with the central control module and used for displaying the calibration parameters of the calibration module;
the input module is connected with the central control module and used for outputting instructions to control the central control module;
the central control module receives data transmitted by m oil sensors transmitted by the acquisition module at a time T1, sets the average value of the resistance measured by the m oil sensors to be Rt1, sets the preset value of the resistance of the oil sensor to be R0, determines the resistance value of the analog output according to the difference range of the average value of the resistance Rt1 measured by the oil sensor at the time T1 and the preset value of the resistance of the oil sensor R0, and determines the number of the data transmitted by the oil sensor received at the time T2 according to the magnitude relation of the average value of the resistance Rt1 measured by the oil sensor at the time T1 and the preset value of the resistance of the oil sensor R0;
the central control module receives data transmitted by a preset number of oil sensors transmitted by the acquisition module at a T2 moment, sets the average value of resistance measured by the oil sensors at a T2 moment to be Rt2, determines the number of the data transmitted by the oil sensors at a T3 moment according to the magnitude relation of Rt2 and R0 and the relation of the Rt2-Rt1 and Ri in a difference matrix, and determines the resistance value of analog output according to the difference range of the average value of resistance Rt1 measured by the oil sensors at a T1 moment and the average value of resistance Rt2 measured by the oil sensors at a T2 moment and the preset value R0 of the resistance of the oil sensors;
the central control module receives data transmitted by a preset number of oil sensors transmitted by the acquisition module at a time T3, the average value of the resistance measured by the oil sensors received at a time T3 is set to be Rt3, the central control module determines the resistance value of the analog output according to the average value of the resistance Rt2 measured by the oil sensors at a time T2 and the difference range of the average value of the resistance Rt3 measured by the oil sensors at a time T3 and the preset value R0 of the resistance of the oil sensors, and determines the value of the oil indicator according to the resistance value of the analog output.
2. The device for calibrating the amount of lubricant in situ according to claim 1, wherein when the collection calibration is selected, at the time T1, the central control module receives the data transmitted by the m lubricant sensors transmitted by the collection module, the average value of the resistances measured by the m lubricant sensors is set to Rt1, the preset value of the resistance of the lubricant sensor is set to R0,
if the Rt1 is larger than or equal to R0, the number of the data transmitted by the oil sensor received by the central control module at the T2 moment is m + 2;
if Rt1 is less than R0, the number of the data transmitted by the oil sensor received by the central control module at the time T2 is m + 1.
3. The device for calibrating the quantity of lubricating oil in situ according to claim 2, wherein a difference matrix R and a resistance value Rm of an analog output are preset in the central control module,
for the difference matrix R (R1, R2, R3 … Rn), wherein R1 represents a first preset difference, R2 represents a second preset difference, R3 represents a third preset difference, and Rn represents an nth preset difference;
a resistance value Rm (Rm1, Rm2, Rm3 … Rmn) for the analog output, where Rm1 represents a resistance value of a first preset analog output, Rm2 represents a resistance value of a second preset analog output, Rm3 represents a resistance value of a third preset analog output, and Rmn represents a resistance value of an nth preset analog output.
4. The device for calibrating the amount of lubricant in situ according to claim 3, wherein the central control module determines the resistance value of the analog output according to the difference between the average value Rt1 of the resistance measured by the lubricant sensor at the time T1 and the preset value R0 of the resistance of the lubricant sensor,
if the | Rt1-R0| ≦ R1, the central control module adjusts the resistance value of the analog output to be RS1, and RS1 ═ Rt1+ Rm 1-R0;
if R1 < | Rt1-R0| ≦ R2, the resistance value of the analog output adjusted by the central control module is RS1, and RS1 ═ Rt1+ Rm 2-R0;
if R2 < | Rt1-R0| ≦ R3, the resistance value of the analog output adjusted by the central control module is RS1, and RS1 ═ Rt1+ Rm 3-R0;
and if R (n-1) < | Rt1-R0| ≦ Rn, the central control module adjusts the resistance value of the analog output to be RS1, and RS1 ═ Rt1+ Rmn-R0.
5. The device for calibrating the amount of lubricant in situ according to claim 4, wherein the central control module receives the data transmitted by the lubricant sensor at a time T2 according to the number of the data of the lubricant sensor received at a time T2 determined at a time T1, sets the average value of the resistances measured by (m +1) or (m +2) lubricant sensors to Rt2, sets the difference Δ Rt21 | Rt2-Rt1|,
when the number of the collected oil sensors is (m +1), comparing Rt2 with R0,
if Rt2 is less than R0, the number of the data transmitted by the oil sensor received by the central control module at the time of T3 is m +1+ 1;
if the Rt2 is larger than or equal to R0, the central control module determines the number of data transmitted by the oil sensor received at the time of T3 according to the Delta Rt 21;
when the number of the collected oil sensors is (m +2), the central control module determines the number of the data transmitted by the oil sensors received at the time T3 according to the Δ Rt 21.
6. The device for calibrating the quantity of lubricating oil in situ according to claim 5, wherein when the central control module determines the number of data transmitted by the lubricating oil sensor received at the time T3 according to the Δ Rt21,
if the delta Rt21 is not more than R1, the central control module determines that the number of the data transmitted by the oil sensor received at the T3 moment is m +1+ 1;
if R1 < [ delta ] Rt21 is not less than R2, the central control module determines that the number of data transmitted by the oil sensor received at the time of T3 is m +1+ 2;
if R2 < [ delta ] Rt21 is not less than R3, the central control module determines that the number of data transmitted by the oil sensor received at the time of T3 is m +1+ 3;
if R (n-1) < delta Rt21 is not more than Rn, the central control module determines that the number of the data transmitted by the oil sensor received at the time T3 is n;
the maximum number of the plurality of lubricating oil sensors is set to be n, m is set to be less than or equal to n, and if m +1 is greater than or equal to n, n is taken as the standard.
7. The device for calibrating the amount of lubricant in situ according to claim 6, wherein the central control module determines the resistance value of the analog output according to the difference between the average value Rt2 of the resistance measured by the lubricant sensor at the time T2 and the preset value R0 of the resistance of the lubricant sensor,
if the | Rt2+ Rt1- (2 × R0) | is less than or equal to R1, the resistance value of the analog output is adjusted to be RS2 by the central control module, and RS2 ═ Rt2+ Rm 1-R0;
if R1 < | Rt2+ Rt1- (2 xR 0) | is less than or equal to R2, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 ═ Rt2+ Rm 2-R0;
if R2 < | Rt2+ Rt1- (2 xR 0) | is less than or equal to R3, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 ═ Rt2+ Rm 3-R0;
and if R (n-1) < | Rt2+ Rt1- (2 xR 0) | is less than or equal to Rn, the central control module adjusts the resistance value of the analog output to be RS2, and RS2 is Rt2+ Rmn-R0.
8. The apparatus as claimed in claim 7, wherein the central control module receives the data transmitted from the oil sensor at a time T3 based on the number of the data of the oil sensor received at a time T3 determined at a time T2, the average value of the resistances measured by the oil sensor received at the time T3 is set to Rt3, the central control module determines the resistance value of the analog output based on the difference between the average value of the resistances measured by the oil sensor at the time T3 Rt3 and the preset value of the resistance of the oil sensor R0,
if the | Rt2+ Rt3- (2 × R0) | is less than or equal to R1, the resistance value of the analog output is adjusted to be RS3 by the central control module, and RS3 ═ Rt3+ Rm 1-R0;
if R1 < | Rt2+ Rt3- (2 xR 0) | is less than or equal to R2, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 ═ Rt3+ Rm 2-R0;
if R2 < | Rt2+ Rt3- (2 xR 0) | is less than or equal to R3, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 ═ Rt3+ Rm 3-R0;
and if R (n-1) < | Rt2+ Rt3- (2 xR 0) | is less than or equal to Rn, the central control module adjusts the resistance value of the analog output to be RS3, and RS3 is Rt3+ Rmn-R0.
9. The device for calibrating the amount of lubricant in situ as set forth in claim 8, wherein a matrix H (H1, H2, H3 … Hn) of lubricant indicators is pre-installed in the central control module, wherein H1 represents a first pre-set lubricant indicator, H2 represents a second pre-set lubricant indicator, H3 represents a third pre-set lubricant indicator, and Hn represents an nth pre-set lubricant indicator.
10. The device for calibrating the quantity of lubricating oil in situ according to claim 9, wherein the central control module determines the lubricating oil indicator H according to a resistance value RSi of the analog output, sets i to 1, 2 and 3,
if RSi is not more than Rm1, the central control module adjusts the indicated value of the lubricating oil indicator to be H1;
if Rm1 is larger than RSi and is not larger than Rm2, the indicated value of the lubricating oil indicator is adjusted to be H2 by the central control module;
if Rm2 is larger than RSi and is not larger than Rm3, the indicated value of the lubricating oil indicator is adjusted to be H3 by the central control module;
and if Rm (n-1) < RSi and not more than Rmn, the central control module adjusts the indicated value of the lubricating oil indicator to be Hn.
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