A gearbox test temperature detection method and system

Abstract

The present invention discloses a gearbox test temperature detection method and system thereof, belonging to the field of temperature measurement technology; including: obtaining vehicle speed data; obtaining the gearbox reading temperature, the gearbox reading temperature is specifically obtained by reading temperature sensor data; based on the gearbox reading temperature and vehicle speed data, constructing a database, and constructing the relationship between the vehicle speed and the gearbox reading temperature; based on the constructed relationship between the vehicle speed and the gearbox reading temperature, retrieving data from the database, calculating the adjustment coefficient of the vehicle speed and the gearbox temperature, and obtaining the adjusted temperature; setting a detection interval, the detection interval is dynamically adjusted based on the vehicle speed and temperature difference change, and the final dynamic interval is obtained. The present invention realizes the use of the correlation between the vehicle speed and the gearbox temperature to obtain a final more accurate temperature, so as to better reflect the thermal state of the gearbox, and provides a basis for subsequent improvement, manufacturing, use, etc.

Description

Technical Field

[0001] The present invention relates to the technical field of temperature detection, and in particular to a temperature detection method for gearbox testing. Background Art

[0002] The performance and status of the gearbox, as a key component of the vehicle's power transmission system, are crucial to the operation of the entire vehicle. The gearbox generates heat during operation. If the temperature is too high, it will damage the internal parts of the gearbox and even affect driving safety. Therefore, it is particularly important to accurately detect the temperature of the gearbox.

[0003] During the gearbox production process, the gearbox needs to be tested in the laboratory. There are many test items, one of which is the test based on simulated vehicle speed. It mainly uses the correlation between vehicle speed and gearbox temperature. By collecting and analyzing vehicle speed data, the operating temperature of the gearbox can be calculated. This method avoids the limitations of simply reading the numerical measurement of the temperature sensor, and can better reflect the thermal state of the gearbox. Summary of the invention

[0004] In view of the above-mentioned technical deficiencies, the purpose of the present invention is to provide a transmission test temperature detection method and system thereof, which realizes the use of the correlation between vehicle speed and transmission temperature to obtain a final more accurate temperature, thereby better reflecting the thermal state of the transmission and providing a basis for subsequent improvement, manufacturing, and use.

[0005] According to a first aspect of the present invention, a method for detecting a transmission test temperature is provided, the method comprising: obtaining vehicle speed data based on a test device; obtaining the transmission read temperature, wherein the transmission read temperature is obtained by reading temperature sensor data; constructing a database based on the transmission read temperature and vehicle speed data, and constructing a relationship between the vehicle speed and the transmission read temperature; based on the constructed relationship between the vehicle speed and the transmission read temperature, retrieving data from the database, calculating an adjustment coefficient of the vehicle speed and the transmission temperature, and obtaining an adjusted temperature; and setting a detection interval, wherein the detection interval is dynamically adjusted based on changes in vehicle speed and temperature difference to obtain a final dynamic interval.

[0006] According to a second aspect of the present invention, a coating defect detection system for photovoltaic glass is provided, the system comprising: a vehicle speed acquisition module, the vehicle speed acquisition module acquires vehicle speed data based on a test device; a temperature acquisition module, the temperature acquisition module acquires a transmission reading temperature by reading temperature sensor data; a database module, the database module is used to store the transmission reading temperature and vehicle speed data; an adjustment temperature acquisition module, the adjustment temperature acquisition module retrieves data from a database based on a constructed relationship between vehicle speed and transmission reading temperature, calculates an adjustment coefficient of vehicle speed and transmission temperature, and acquires an adjusted temperature; and a detection interval module, the detection interval module performs dynamic adjustment based on changes in vehicle speed and temperature difference to acquire a final dynamic interval.

[0007] The beneficial effects of the present invention are:

[0008] The present invention forms segmented vehicle speed intervals and segmented adjustment coefficients by setting intervals. By subdividing the vehicle speed into different intervals, a specific adjustment coefficient can be specified for each interval; thereby, the influence of the vehicle speed on the thermal state of the gearbox can be more accurately reflected.

[0009] The segmented speed range allows the system to adjust according to the current vehicle speed. This flexibility allows the system to adapt to various driving conditions, thereby improving the overall detection accuracy and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 A schematic flow chart of a transmission test temperature detection method provided in this embodiment.

[0012] Figure 2 This is a schematic diagram of the structure of a gearbox test temperature detection system provided in this embodiment. DETAILED DESCRIPTION

[0013] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0014] Example:

[0015] like Figure 1 As shown, the present invention provides a method for detecting gearbox test temperature, the method comprising:

[0016] S1: Obtain vehicle speed data based on the test equipment;

[0017] Specifically, the test equipment is a device that simulates the operation of the test gearbox. For example, through the motor control system, it simulates the vehicle speed change and then obtains the vehicle speed data.

[0018] S2: Acquire the gearbox reading temperature, wherein the gearbox reading temperature is obtained by reading temperature sensor data;

[0019] Specifically, the gearbox temperature is obtained by reading the temperature sensor data. Generally, the temperature sensor is set on the gearbox. At this time, the temperature obtained is the temperature directly measured and read by the temperature sensor. In actual testing, the temperature sensor can use the commonly used existing one, which has a data pin, and the gearbox temperature can be obtained through the pin.

[0020] S3: Based on the transmission temperature and vehicle speed data, a database is constructed, and a relationship between the vehicle speed and the transmission temperature is constructed;

[0021] Specifically, in order to detect the temperature more accurately, the relationship between the vehicle speed and the transmission reading temperature is constructed based on the segmented vehicle speed interval, that is, the segmented vehicle speed interval and the segmented adjustment coefficient are set;

[0022] The segmented vehicle speed intervals include a first interval, a second interval, and a third interval; the segmented adjustment coefficients correspond to the segmented vehicle speed intervals one by one, that is, they correspond to the first segmented coefficient, the second segmented coefficient, and the third segmented coefficient;

[0023] When in the first interval, the vehicle speed has little effect on the transmission temperature;

[0024] When in the second interval, the vehicle speed has a moderate effect on the transmission temperature;

[0025] When in the third interval, the vehicle speed has a moderate effect on the transmission temperature;

[0026] Calculate the segment adjustment factor =( m×S+b );in, m and b is the coefficient, m Represents vehicle speed S Each time you increase one unit, the adjustment factor The increase in b Represents the adjustment coefficient when the vehicle speed is 0 The base value of

[0027] Calculate the adjusted temperature: Tb = The + ;in, The Read the temperature for the transmission;

[0028] Furthermore, for the above m and b , the specific calculation is as follows:

[0029] Collect data points corresponding to the segmented vehicle speed range ( S , The );

[0030]

[0031]

[0032] in, n is the number of data points, is the sum of the product of vehicle speed and adjustment coefficient, is the sum of the vehicle speeds, is the sum of the temperatures read by the gearbox, It is the sum of the squares of the vehicle speeds.

[0033] For a clearer description, in this embodiment, the definitions are as follows:

[0034] The first section: vehicle speed is 0-50 km / h;

[0035] The second range: vehicle speed is 50-100 km / h;

[0036] The third zone: the vehicle speed is above 100 km / h;

[0037] When the vehicle speed is in the first interval, the transmission temperature is sampled (the following example is only a calculation example and does not represent real data. During actual sampling, the system can be set according to actual conditions), for example:

[0038]

[0039] =150;

[0040] =97;

[0041] =0×10 + 10×12 + 20×15 + 30×17 + 40×20 + 50×23 = 2390;

[0042] =0² + 10² + 20² + 30² + 40² + 50² = 5500;

[0043] Substitute into the calculation ( n =6):

[0044] =0.217

[0045] =10.083

[0046] Therefore, the segment adjustment coefficient of the first interval is =( 0.217×S+10.083 ); When the vehicle speed is 45km / h, the adjusted temperature is: Tb = 45 + 0.217×45+10.083=64.848 .

[0047] The calculation of the second interval and the third interval is similar and will not be repeated here.

[0048] S4: Setting a detection interval, wherein the detection interval is dynamically adjusted based on changes in vehicle speed and temperature difference to obtain a final dynamic interval;

[0049] Specifically, a basic interval time and an adjustment factor are set; wherein the basic interval time can be set according to actual conditions, for example, set to 1000 milliseconds;

[0050] Obtain the current vehicle speed and temperature difference changes, and change the adjustment factor according to the current vehicle speed and temperature difference changes;

[0051] Get the final dynamic interval, where the final dynamic interval Ts = T 1× A 1× A 2; where T 1 is the basic interval time; A 1 adjustment factor corresponding to vehicle speed; A 2 is the adjustment factor corresponding to temperature.

[0052] Furthermore, the specific rules for changing the adjustment factor are as follows. In actual setting, the following rules are followed and the values ​​are assigned according to the actual situation.

[0053] The settings are based on the temperature difference, as follows:

[0054] When the temperature read by the gearbox changes greatly within a period of time, the detection frequency is increased and the adjustment factor increases; when the temperature read by the gearbox changes slightly within a period of time, the detection frequency is reduced and the adjustment factor decreases; the adjustment factor is set based on the temperature difference; for example, the change amplitude is set to 10 degrees Celsius, and the corresponding adjustment factors are set to 0.9 and 1.1 respectively.

[0055] The settings are based on vehicle speed, as follows:

[0056] When the vehicle speed is in the first interval, the detection frequency is reduced and the adjustment factor is reduced; when the vehicle speed is in the second interval, the basic interval time is maintained and the adjustment factor remains unchanged; when the vehicle speed is in the third interval, the detection frequency is increased and the adjustment factor is increased; for example, the vehicle speed is segmented according to the speed corresponding to the above-mentioned segmented speed intervals, and the corresponding adjustment factors are set to 0.8, 1 and 1.2 respectively.

[0057] Based on the above, for example, if the vehicle speed is 70 km / h and the temperature change is less than 10 degrees Celsius, then Ts = T 1× A 1× A 2=1000×1×1.1=1100 milliseconds; It should be noted that the basic interval time and adjustment factor are not absolute values ​​and can be set specifically during the actual test process as long as the above requirements are met.

[0058] In addition, in order to ensure the rationality of the final interval time, a minimum interval time and a maximum interval time can be directly set.

[0059] Embodiment 2:

[0060] Based on the first embodiment, Figure 2 As shown, this embodiment provides a gearbox test temperature detection system, the system comprising:

[0061] A vehicle speed acquisition module, wherein the vehicle speed acquisition module acquires vehicle speed data based on a test device;

[0062] A temperature acquisition module, wherein the temperature acquisition module obtains a transmission reading temperature by reading temperature sensor data;

[0063] A database module, the database module is used to store the transmission temperature and vehicle speed data;

[0064] An adjustment temperature acquisition module, which retrieves data from a database based on the established relationship between the vehicle speed and the transmission temperature, calculates adjustment coefficients of the vehicle speed and the transmission temperature, and obtains an adjusted temperature;

[0065] A detection interval module is used to dynamically adjust the vehicle speed and the temperature difference to obtain a final dynamic interval.

[0066] Furthermore, the adjusted temperature acquisition module is further used to perform the following steps:

[0067] Setting segmented vehicle speed intervals, the segmented vehicle speed intervals including a first interval, a second interval and a third interval;

[0068] Setting a segment adjustment coefficient, wherein the segment adjustment coefficient corresponds to the segment vehicle speed interval one by one, including a first segment coefficient, a second segment coefficient and a third segment coefficient; wherein in the first interval, the vehicle speed has a small effect on the transmission temperature, in the second interval, the vehicle speed has a medium effect on the transmission temperature, and in the third interval, the vehicle speed has a large effect on the transmission temperature;

[0069] Calculate the segment adjustment factor =( m×S+b );in, m and b is the coefficient, m Represents vehicle speed S Each time you increase one unit, the adjustment factor The increase in b Represents the adjustment coefficient when the vehicle speed is 0 The base value of

[0070] Calculate the adjusted temperature: Tb = The + ;in, The Take a temperature reading for the transmission.

[0071] Furthermore, calculating the segment adjustment coefficient includes:

[0072] Collect data points corresponding to the segmented vehicle speed range ( S , The );

[0073] Calculation coefficient m and b :

[0074]

[0075]

[0076] in, n is the number of data points, is the sum of the product of vehicle speed and adjustment coefficient, is the sum of the vehicle speeds, is the sum of the temperatures read by the gearbox, It is the sum of the squares of the vehicle speeds.

[0077] Furthermore, the detection interval module is also used to perform the following steps:

[0078] Set the base interval and adjustment factor;

[0079] Obtain the current vehicle speed and temperature difference changes, and change the adjustment factor according to the current vehicle speed and temperature difference changes;

[0080] Get the final dynamic interval, where the final dynamic interval Ts = T 1× A 1× A 2; where T 1 is the basic interval time; A 1 adjustment factor corresponding to vehicle speed; A 2 is the adjustment factor corresponding to temperature.

[0081] Further, the settings are made based on the temperature difference, as follows:

[0082] When the temperature read by the gearbox changes greatly within a period of time, the detection frequency is increased and the adjustment factor increases;

[0083] When the temperature reading of the transmission changes little within a period of time, the detection frequency is reduced and the adjustment factor is reduced.

[0084] Further, the settings are made based on the vehicle speed, as follows:

[0085] When the vehicle speed is in the first interval, the detection frequency is reduced and the adjustment factor is reduced;

[0086] When the vehicle speed is in the second interval, the basic interval time is maintained, and the adjustment factor remains unchanged;

[0087] When the vehicle speed is in the third interval, the detection frequency is increased and the adjustment factor is increased.

[0088] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A gearbox test temperature detection method, It is characterized in that The method comprises: Based on the test equipment, obtain vehicle speed data; Acquiring a transmission temperature reading, wherein the transmission temperature reading is obtained by reading temperature sensor data; Based on the transmission temperature and vehicle speed data, a database is constructed, and the relationship between the vehicle speed and the transmission temperature is constructed; Based on the established relationship between the vehicle speed and the transmission temperature, data is retrieved from the database, the adjustment coefficients of the vehicle speed and the transmission temperature are calculated, and the adjusted temperature is obtained; Setting a detection interval, wherein the detection interval is dynamically adjusted based on vehicle speed and temperature difference changes to obtain a final dynamic interval; Based on the transmission temperature and vehicle speed data, a database is constructed, and the relationship between vehicle speed and transmission temperature is constructed, including: Setting segmented vehicle speed intervals, the segmented vehicle speed intervals including a first interval, a second interval and a third interval; Setting a segment adjustment coefficient, wherein the segment adjustment coefficient corresponds to the segment vehicle speed interval one by one, including a first segment coefficient, a second segment coefficient and a third segment coefficient; wherein in the first interval, the vehicle speed has a small effect on the transmission temperature, in the second interval, the vehicle speed has a medium effect on the transmission temperature, and in the third interval, the vehicle speed has a large effect on the transmission temperature; Calculate the segment adjustment factor =( m×S+b );in, m and b is the coefficient, m Represents vehicle speed S Each time you increase one unit, the adjustment factor The increase in b Represents the adjustment coefficient when the vehicle speed is 0 The base value of Calculate the adjusted temperature: Tb = Ta + ;in, Ta Read the temperature for the transmission; Calculation of the segment adjustment factor includes: Collect data points corresponding to the segmented vehicle speed range ( S , Ta ); Calculation coefficient m and b : in, n is the number of data points, is the sum of the product of vehicle speed and adjustment coefficient, is the sum of the vehicle speeds, is the sum of the temperatures read by the gearbox, It is the sum of the squares of the vehicle speeds.

2. A gearbox test temperature detection method as claimed in claim 1, It is characterized in that Setting a detection interval, where the detection interval is dynamically adjusted based on vehicle speed and temperature difference changes, to obtain a final dynamic interval, including: Set the base interval and adjustment factor; Obtain the current vehicle speed and temperature difference changes, and change the adjustment factor according to the current vehicle speed and temperature difference changes; Get the final dynamic interval, where the final dynamic interval Ts = T 1 × A 1 × A 2 ; In the formula, T 1 is the basic interval time; A 1 The adjustment factor corresponding to the vehicle speed; A 2 is the adjustment factor corresponding to temperature.

3. A gearbox test temperature detection method as claimed in claim 2, It is characterized in that Setting the adjustment factor includes: The settings are based on the temperature difference, as follows: When the temperature read by the gearbox changes greatly within a period of time, the detection frequency is increased and the adjustment factor increases; When the temperature reading of the transmission changes little within a period of time, the detection frequency is reduced and the adjustment factor is reduced.

4. A gearbox test temperature detection method as claimed in claim 3, It is characterized in that Setting the adjustment factor includes: The settings are based on vehicle speed, as follows: When the vehicle speed is in the first interval, the detection frequency is reduced and the adjustment factor is reduced; When the vehicle speed is in the second interval, the basic interval time is maintained, and the adjustment factor remains unchanged; When the vehicle speed is in the third interval, the detection frequency is increased and the adjustment factor is increased.

5. A gearbox test temperature detection system, It is characterized in that For executing the method according to any one of claims 1 to 4, the system comprises: A vehicle speed acquisition module, wherein the vehicle speed acquisition module acquires vehicle speed data based on a test device; A temperature acquisition module, wherein the temperature acquisition module obtains a transmission reading temperature by reading temperature sensor data; A database module, the database module is used to store the transmission temperature and vehicle speed data; An adjustment temperature acquisition module, which retrieves data from a database based on the established relationship between the vehicle speed and the transmission temperature, calculates adjustment coefficients of the vehicle speed and the transmission temperature, and obtains an adjusted temperature; A detection interval module is used to dynamically adjust the vehicle speed and the temperature difference to obtain a final dynamic interval.

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