Multifunctional alarm method and system for mobile equipment

Abstract

The invention relates to the technical field of dynamic equipment fault alarm, and discloses a dynamic equipment multifunctional alarm method and system, and the method comprises the steps: S1, obtaining the temperature information, vibration information and rotation speed information of dynamic equipment in real time; s2, temperature increment alarm information J2 is obtained based on the temperature increment delta T; s3, vibration increment alarm information J4 in a certain time period before the measurement moment is obtained in combination with the rotating speed information; s4, obtaining a fault characteristic value frequency alarm value J5 according to the relationship between the fault characteristic frequency at the measurement moment and the fault characteristic value frequency reference interval; s5, comparing the temperature measurement value at the newest measurement moment with the temperature alarm threshold value T1 to obtain temperature alarm information J1, and comparing the vibration measurement value at the newest measurement moment with the vibration alarm threshold value Z1 to obtain vibration alarm information J3; and S6, giving weights to J1, J2, J3, J4 and J5, carrying out summation, and judging whether to give an alarm or not according to a summation result. According to the invention, multi-parameter alarm of vibration, temperature and characteristic frequency is realized, which is more comprehensive and accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of fault alarm of moving equipment, and in particular to a multifunctional alarm method and system for moving equipment. Background Art

[0002] At present, the fault alarm of dynamic equipment (rotating equipment such as motors, pumps, fans, transmissions, etc.) mainly relies on the alarm of monitoring parameters such as temperature, vibration and other parameters, and is usually a vibration and temperature threshold alarm method. This alarm method has great problems: on the one hand, the threshold alarm method cannot truly reflect the occurrence of the fault and cannot effectively prevent the expansion of the fault; on the other hand, relying solely on temperature and vibration values ​​for fault alarm is not comprehensive and cannot detect early equipment faults in time; thus, the purpose of preventing the expansion of faults and reducing losses through fault alarms cannot be achieved. Summary of the invention

[0003] The present invention provides a multifunctional alarm method and system for moving equipment, which can timely and accurately detect moving equipment failures and generate alarm prompts, prevent the expansion of failures, and reduce failure losses.

[0004] The present invention is achieved through the following technical solutions:

[0005] A multifunctional alarm method for a mobile device, comprising:

[0006] S1, real-time acquisition of temperature information, vibration information and speed information of moving equipment;

[0007] S2, based on the latest measurement moment, calculate the temperature alarm threshold T1 of the measurement moment according to the temperature information of a period of time before the latest measurement moment, and obtain the temperature increment ΔT in a certain period of time before the measurement moment, and obtain the temperature increment alarm information J2 based on the temperature increment ΔT;

[0008] S3, based on the latest measurement time, calculate the vibration alarm threshold Z1 of the measurement time according to the vibration information of a period of time before the latest measurement time, and obtain the vibration increment alarm information J4 of a certain period of time before the measurement time in combination with the speed information;

[0009] S4, based on the latest measurement time, calculate the fault characteristic frequency value according to the vibration information of a period of time before the latest measurement time combined with the bearing parameters of the moving equipment, set the fault characteristic value frequency reference interval based on the fault characteristic frequency value, and obtain the fault characteristic value frequency alarm value J5 according to the relationship between the fault characteristic frequency at the measurement time and the fault characteristic value frequency reference interval;

[0010] S5, comparing the temperature measurement value at the latest measurement time with the temperature alarm threshold T1 to obtain temperature alarm information J1, and comparing the vibration measurement value at the latest measurement time with the vibration alarm threshold Z1 to obtain vibration alarm information J3;

[0011] S6. Assign weights to the temperature alarm information J1, the temperature increment alarm information J2, the vibration alarm information J3, the vibration increment alarm information J4, and the fault characteristic value frequency alarm value J5, and calculate the sum of the weights, and determine whether to alarm based on the sum result.

[0012] As an optimization, the specific calculation process of the temperature alarm threshold T1 is:

[0013] A1. Obtain the first temperature effective value T according to all the temperature information in the period before the latest measurement time. 有效1 ;

[0014] A2, the effective value of the first temperature T 有效1 Assign the first coefficient to obtain the temperature alarm threshold T1, that is, T1 = T 有效1 *Q1, Q1 is the first coefficient.

[0015] As an optimization, the specific calculation process of the temperature increment alarm threshold T2 is:

[0016] B1. Obtain the second temperature effective value T according to all the temperature information of the first period of one hour before the latest measurement time. 有效2 , and at the same time, a third temperature effective value T is obtained based on all the temperature information of the second period one hour before the first period 有效3 ;

[0017] B2. Calculate the room temperature increase value ΔT during the first period and the second period 室温 ;

[0018] B3, the second temperature effective value T 有效2 Subtract the effective value of the third temperature T 有效3 and room temperature growth value ΔT 室温 , we get the temperature increment ΔT, that is, ΔT = T 有效2 -T 有效3 -ΔT 室温 ;

[0019] B4. If the temperature increment ΔT>0, the temperature increment alarm information J2=1, otherwise the temperature increment alarm information J2=0.

[0020] As an optimization, the specific calculation process of the vibration alarm threshold Z1 is:

[0021] C1. Obtaining the first vibration effective value Z based on all the vibration information in the period before the latest measurement time有效1 ;

[0022] C2, the effective value Z of the first vibration 有效1 Assign the second coefficient to obtain the vibration alarm threshold Z1, that is, Z1 = Z 有效1 *Q2, Q2 is the second coefficient.

[0023] 5. A multifunctional alarm method for dynamic equipment according to claim 1, characterized in that the specific calculation process of the vibration increment alarm threshold Z2 is:

[0024] D1, obtain the second vibration effective value Z according to all the vibration information of the third period of two hours before the latest measurement time. 有效2 , and obtain the third vibration effective value Z according to all the temperature information of the fourth period of the first two hours of the third period 有效3 ;

[0025] D2, obtain the fourth vibration effective value Z according to all the vibration information of the fifth period of the hour before the latest measurement time. 有效4 , and obtain the fifth vibration effective value Z according to all the temperature information of the sixth period of the first two hours of the fifth period 有效5 , and obtain the sixth vibration effective value Z according to all the temperature information of the seventh period of the first three hours of the fifth period 有效6 ;

[0026] D3. Obtaining a first speed effective value V according to all the speed information in the fifth period 有效1 , and obtain the second speed effective value V according to all the speed information of the eighth period one hour before the fifth period 有效2 ;

[0027] D4, according to the first speed effective value V 有效1 and the second speed effective value V 有效2 Get the speed difference ΔV;

[0028] D5. According to the second vibration effective value Z 有效2 Subtract the third vibration effective value Z 有效3 Obtain the second vibration effective difference ΔZ2;

[0029] D6, according to the fourth vibration effective value Z 有效4 Subtract the fifth vibration effective value Z 有效5 Obtain the first vibration effective difference ΔZ1;

[0030] D7, according to the fourth vibration effective value Z 有效4 Subtract the sixth vibration effective value Z 有效6 Obtain the third vibration effective difference ΔZ3;

[0031] D8. Take the corresponding effective vibration difference according to the speed difference ΔV to determine whether the vibration increment alarm information J4 is 0 or 1. If the effective vibration difference is greater than 0, the vibration increment alarm information J4=0, otherwise, the vibration increment alarm information J4=1.

[0032] As an optimization, the corresponding effective difference is taken according to the speed difference ΔV:

[0033] If the speed difference ΔV is within the range of 0 to rated speed * 5%, the effective vibration difference is the second effective vibration difference ΔZ2;

[0034] If the speed difference ΔV is less than 0, the effective vibration difference is the first effective vibration difference ΔZ1;

[0035] If the speed difference ΔV is greater than the rated speed*5%, the effective vibration difference is the third effective vibration difference ΔZ3.

[0036] As an optimization, the fault characteristic value frequency reference interval is ±10% of the fault characteristic frequency value.

[0037] As an optimization, if the fault characteristic value at the latest measurement moment is within the fault characteristic value frequency reference interval, the frequency alarm value J5 is 0, otherwise, J5 is 1.

[0038] As an optimization, the specific calculation method for determining whether to alarm is based on the summation result is:

[0039] S=K1*J1+K2*J2+K3*J3+K4*J4+K5*J5;

[0040] Among them, K1, K2, K3, K4, and K5 are the weights of the alarm outputs of temperature alarm information, temperature increment alarm information, vibration alarm information, vibration increment alarm information, and fault characteristic value frequency alarm value, respectively;

[0041] When S≥1, the alarm output is triggered; when S<1, it is normal and no alarm is given.

[0042] The present invention discloses a multifunctional alarm system for a moving device, which is used to implement the multifunctional alarm method for a moving device, and comprises:

[0043] The acquisition module is used to obtain the temperature information, vibration information and speed information of the moving equipment in real time;

[0044] The temperature growth difference alarm information calculation module is used to calculate the temperature alarm threshold T1 of the measurement moment based on the temperature information of a period of time before the latest measurement moment, and obtain the temperature increment ΔT in a certain period of time before the measurement moment, and obtain the temperature increment alarm information J2 based on the temperature increment ΔT;

[0045] A vibration increment alarm information calculation module is used to calculate the vibration alarm threshold Z1 of the measurement moment based on the latest measurement moment and the vibration information of a period of time before the latest measurement moment, and obtain the vibration increment alarm information J4 of a certain period of time before the measurement moment in combination with the rotation speed information;

[0046] A fault characteristic value frequency alarm module is used to calculate the fault characteristic frequency value based on the latest measurement time, according to the vibration information of a period of time before the latest measurement time and the bearing parameters of the moving equipment, and to set the fault characteristic value frequency reference interval based on the fault characteristic frequency value, and to obtain the fault characteristic value frequency alarm value J5 according to the relationship between the fault characteristic frequency at the measurement time and the fault characteristic value frequency reference interval;

[0047] Temperature alarm, used to compare the temperature measurement value at the latest measurement time with the temperature alarm threshold T1 to obtain temperature alarm information J1,

[0048] A vibration alarm calculation module is used to obtain vibration alarm information J3 by comparing the vibration measurement value at the latest measurement time with the vibration alarm threshold Z1;

[0049] The judgment module is used to assign weights to the temperature alarm information J1, the temperature increment alarm information J2, the vibration alarm information J3, the vibration increment alarm information J4, and the fault characteristic value frequency alarm value J5, and sum them up, and judge whether to alarm according to the summation result.

[0050] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0051] (1) The present invention realizes multi-parameter alarm of vibration, temperature and characteristic frequency, which is more comprehensive and accurate;

[0052] (2) The temperature alarm of the present invention adds an alarm for the temperature increase at the same temperature measuring point on the basis of the currently commonly used threshold alarm, realizing the alarm for sudden temperature changes; and adds an alarm for the temperature difference at different temperature measuring points of the same device; thus, the temperature alarm more accurately reflects the changes in the device, and the fault alarm is also more precise;

[0053] (3) The vibration alarm of the present invention adds an alarm for the increase in vibration at the same vibration measuring point on the basis of the currently commonly used threshold alarm, thereby realizing an alarm for sudden vibration changes; the vibration alarm more accurately reflects the changes in the equipment, and the fault alarm is also more precise;

[0054] (4) The present invention calculates the characteristic frequency interval of equipment faults, such as the characteristic frequency intervals of rolling bearings, monitors the vibration frequency of the equipment in real time, and compares it with the fault characteristic frequency to implement fault characteristic frequency alarm;

[0055] (5) The present invention realizes comprehensive alarm by setting weight coefficients for temperature threshold alarm, vibration threshold alarm, temperature increment alarm, vibration increment alarm, vibration characteristic frequency alarm, temperature difference alarm, etc., so as to facilitate management personnel to make comprehensive judgments on equipment conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0057] Figure 1 This is a schematic diagram of a multifunctional alarm system for mobile devices of the present invention;

[0058] Figure 2 It is a flow chart of temperature alarm;

[0059] Figure 3 Flow chart for temperature increment alarm;

[0060] Figure 4 It is a flow chart of vibration alarm;

[0061] Figure 5 Flow chart for vibration increment alarm;

[0062] Figure 6 This is the flow chart of fault characteristic frequency alarm. DETAILED DESCRIPTION

[0063] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments and drawings. The exemplary embodiments of the present invention and their description are only used to explain the present invention and are not intended to limit the present invention.

[0064] A multifunctional alarm method for a mobile device according to embodiment 1 includes:

[0065] S1. Acquire the temperature information, vibration information and rotation speed information of the moving device in real time; acquire the temperature information, vibration information and rotation speed information of the device based on the temperature sensor, vibration sensor and rotation speed sensor installed on the device.

[0066] A set of devices is configured on each transmission chain. Temperature and vibration measurement points are deployed at the locations that need to be monitored, and multiple temperature and vibration measurement points are deployed on one transmission chain. Among them, the temperature measurement point and the vibration measurement point are integrated. That is, at the same measurement point, the temperature and vibration signals are collected synchronously. The speed signal is obtained by deploying a speed sensor to measure, and one speed measurement point is deployed on one transmission chain.

[0067] Temperature signals, vibration signals, and speed signals are collected and measured according to the established collection and measurement, with one group collected every hour and each group collected for 60 seconds. The sampling frequency of each channel is 25600Hz.

[0068] The data acquisition module is used to collect and process temperature signals, vibration signals, and speed signals. Each set of data is collected and stored according to the time stamp.

[0069] Calculate the effective value of vibration, effective value of temperature, and characteristic frequency value of vibration in the same set of data.

[0070] The effective value of temperature is the average value of each temperature information; the effective value of vibration is the root mean square value of each vibration information.

[0071] like Figure 2 , 3 As shown, S2, based on the latest measurement moment, the temperature alarm threshold T1 of the measurement moment is calculated according to the temperature information of a period of time before the latest measurement moment, and the temperature increment ΔT in a certain period of time before the measurement moment is obtained, and the temperature increment alarm information J2 is obtained based on the temperature increment ΔT;

[0072] In this embodiment, the specific calculation process of the temperature alarm threshold T1 is:

[0073] A1. Obtain the first temperature effective value T according to all the temperature information in the period before the latest measurement time. 有效1 For example, the previous period of time here can take the effective value of the temperature information of the previous month. For example, if the latest measurement time is 00:00 on July 10, 2023, then the temperature information can take the temperature data from 00:00 on June 10 to 23:00 on July 9, and then take the effective value of the temperature data during this period as the first temperature effective value T 有效1 .

[0074] A2, the effective value of the first temperature T 有效1 Assign the first coefficient to obtain the temperature alarm threshold T1, that is, T1 = T 有效1 *Q1, Q1 is the first coefficient. Q1 can be 125%, that is, 1.25. The temperature alarm threshold T1 is the upper temperature limit value. If the temperature information at the latest measurement time is equal to or exceeds the upper temperature limit value, an alarm is triggered. J1=1.

[0075] In this embodiment, the specific calculation process of the temperature increment alarm threshold T2 is:

[0076] B1. Obtain the second temperature effective value T according to all the temperature information of the first period of one hour before the latest measurement time. 有效2 , and at the same time, a third temperature effective value T is obtained based on all the temperature information of the second period one hour before the first period 有效3 ;

[0077] For example, if the latest measurement time is 00:00 on July 10, 2023, the first period is 23:00 on July 9, 2023-00:00 on July 10, 2023 (not included), and the second period is 22:00 on July 9, 2023-23:00 on July 9, 2023 (not included).

[0078] B2. Calculate the room temperature increase value ΔT during the first period and the second period 室温 ; Room temperature growth value ΔT 室温 Refers to the temperature difference between two points in time, indicating temperature rise or temperature drop. If the temperature rises, ΔT 室温 >0, if the temperature drops, ΔT 室温 <0.

[0079] For example, the room temperature at 00:00 on July 10, 2023 in the first period is 23°C, and the room temperature at 22:00 on July 9, 2023 in the second period is 24°C, then ΔT 室温 =23℃-24℃=-1℃.

[0080] B3, the second temperature effective value T 有效2 Subtract the effective value of the third temperature T 有效3 and room temperature growth value ΔT 室温 , we get the temperature increment ΔT, that is, ΔT = T 有效2 -T 有效3 -ΔT 室温 ;

[0081] B4. If the temperature increment ΔT>0, the temperature increment alarm information J2=1, otherwise the temperature increment alarm information J2=0.

[0082] like Figure 4 , 5 As shown, S3, based on the latest measurement moment, the vibration alarm threshold Z1 of the measurement moment is calculated according to the vibration information of a period of time before the latest measurement moment, and the vibration increment alarm information J4 of a certain period of time before the measurement moment is obtained in combination with the speed information;

[0083] Similarly, if the temperature information is taken from the data of the previous month, then the vibration information is also taken from the data of the previous month.

[0084] In this embodiment, the specific calculation process of the vibration alarm threshold Z1 is:

[0085] C1. Obtaining the first vibration effective value Z based on all the vibration information in the period before the latest measurement time 有效1 ;

[0086] C2, the effective value Z of the first vibration 有效1 Assign the second coefficient to obtain the vibration alarm threshold Z1, that is, Z1 = Z 有效1 *Q2, Q2 is the second coefficient.

[0087] For example, the vibration alarm threshold value Z1() obtained by multiplying the first vibration effective value of the vibration information of the previous month by 125% is the vibration upper limit value.

[0088] In this embodiment, the specific calculation process of the vibration increment alarm threshold Z2 is:

[0089] D1, obtain the second vibration effective value Z according to all the vibration information of the third period of two hours before the latest measurement time. 有效2 , and obtain the third vibration effective value Z according to all the temperature information of the fourth period of the first two hours of the third period 有效3 ;

[0090] For example, the latest measurement time is 00:00 on July 10, 2023, the third period is from 22:00 on July 9, 2023 to 00:00 on July 10, 2023 (not included), and the fourth period is from 20:00 on July 9, 2023 to 22:00 on July 9, 2023 (not included);

[0091] D2, obtain the fourth vibration effective value Z according to all the vibration information of the fifth period of the hour before the latest measurement time. 有效4 , and obtain the fifth vibration effective value Z according to all the temperature information of the sixth period of the first two hours of the fifth period 有效5 , and obtain the sixth vibration effective value Z according to all the temperature information of the seventh period of the first three hours of the fifth period 有效6 ;

[0092] For example, the latest measurement time is 00:00 on July 10, 2023, the fifth period is 23:00 on July 9, 2023-00:00 on July 10, 2023 (not included), the sixth period is 21:00 on July 9, 2023-23:00 on July 9, 2023 (not included), and the seventh period is 20:00 on July 9, 2023-23:00 on July 9, 2023 (not included).

[0093] D3. Obtaining a first speed effective value V according to all the speed information in the fifth period 有效1 , and obtain the second speed effective value V according to all the speed information of the eighth period one hour before the fifth period 有效2 ;

[0094] D4, according to the first speed effective value V 有效1 and the second speed effective value V 有效2 Get the speed difference ΔV;

[0095] D5. According to the second vibration effective value Z 有效2 Subtract the third vibration effective value Z 有效3 Obtain the second vibration effective difference ΔZ2;

[0096] D6, according to the fourth vibration effective value Z 有效4 Subtract the fifth vibration effective value Z 有效5 Obtain the first vibration effective difference ΔZ1;

[0097] D7, according to the fourth vibration effective value Z 有效4 Subtract the sixth vibration effective value Z 有效6 Obtain the third vibration effective difference ΔZ3;

[0098] D8. Take the corresponding effective vibration difference according to the speed difference ΔV to determine whether the vibration increment alarm information J4 is 0 or 1. If the effective vibration difference is greater than 0, the vibration increment alarm information J4=0, otherwise, the vibration increment alarm information J4=1.

[0099] In this embodiment, the corresponding effective difference value is obtained according to the speed difference value ΔV:

[0100] If the speed difference ΔV is within [-rated speed*5%, rated speed*5%], the effective vibration difference is the second effective vibration difference ΔZ2;

[0101] If the speed difference ΔV is less than -rated speed*5, the effective vibration difference is the first effective vibration difference ΔZ1;

[0102] If the speed difference ΔV is greater than the rated speed*5%, the effective vibration difference is the third effective vibration difference ΔZ3.

[0103] like Figure 6 As shown, S4, based on the latest measurement moment, the fault characteristic frequency value is calculated according to the vibration information of a period of time before the latest measurement moment combined with the bearing parameters of the moving equipment, and the fault characteristic value frequency reference interval is set based on the fault characteristic frequency value, and the fault characteristic value frequency alarm value J5 is obtained according to the relationship between the fault characteristic frequency at the measurement moment and the fault characteristic value frequency reference interval;

[0104] In this embodiment, the fault characteristic value frequency reference interval is ±10% of the fault characteristic frequency value.

[0105] According to the bearing parameters of the moving equipment being tested, the fault characteristic value frequency value is calculated. The characteristic frequency value ±10% is the reference fault characteristic value frequency reference interval; the calculated frequency value is close if it falls within the frequency reference interval; otherwise, it is not close. If the fault characteristic value at the latest measurement time is within the fault characteristic value frequency reference interval, the frequency alarm value J5 is 0, otherwise, J5 is 1;

[0106] S5, comparing the temperature measurement value at the latest measurement time with the temperature alarm threshold T1 to obtain temperature alarm information J1, and comparing the vibration measurement value at the latest measurement time with the vibration alarm threshold Z1 to obtain vibration alarm information J3;

[0107] S6. Assign weights to the temperature alarm information J1, the temperature increment alarm information J2, the vibration alarm information J3, the vibration increment alarm information J4, and the fault characteristic value frequency alarm value J5, and calculate the sum of the weights, and determine whether to alarm based on the sum result.

[0108] In this embodiment, the specific calculation method for determining whether to alarm based on the summation result is:

[0109] S=K1*J1+K2*J2+K3*J3+K4*J4+K5*J5;

[0110] Among them, K1, K2, K3, K4, and K5 are the weights of the alarm outputs of temperature alarm information, temperature increment alarm information, vibration alarm information, vibration increment alarm information, and fault characteristic value frequency alarm value, respectively;

[0111] When S≥1, the alarm output is triggered; when S<1, it is normal and no alarm is given.

[0112] The output of the data multi-function warning is in the form of 0 or 1. The result can be used to remind the equipment operation and maintenance inspection personnel through the indicator light, or transmitted to the server background for display through the communication module.

[0113] Definition: Five modules: temperature warning 1 (corresponding to temperature alarm information J1), temperature warning 2 (corresponding to temperature increment alarm information J2), vibration warning 1 (corresponding to vibration alarm information J3), vibration warning 2 (corresponding to vibration increment alarm information J4), and vibration warning 3 (corresponding to fault characteristic value frequency alarm value J5). If yes, the output is 1, otherwise, the output is 0.

[0114] By default:

[0115] K1=K2=K3=K4=K5=0.2

[0116] K1*temperature warning 1+K2*temperature warning 2+K3*vibration warning 1+K4*vibration warning 2+K5*vibration warning 3=S;

[0117] If S≥1, the alarm output is triggered; if S<1, it is normal;

[0118] K1, K2, K3, K4, and K5 are the weights of individual alarm outputs and can be adjusted according to the conditions of the industrial site.

[0119] For example: If the industrial site can accurately know the fault characteristic frequency of the moving equipment, if this frequency appears, it means a fault has occurred. In this case, the weight K5 of vibration warning 3 can be changed to 1. Or according to manual diagnosis experience, if this frequency appears, there is an 80% probability of a fault, and the weight K5 of vibration warning 3 can be changed to 0.8. The occurrence of mechanical failure is generally accompanied by the appearance of other characteristics. Mechanical failure will be accompanied by an increasing trend in effective value, K4*vibration warning 2+K5*vibration warning 3=0.2+0.8=1, which also triggers an alarm.

[0120] The temperature alarm threshold T1 and the vibration alarm threshold Z1 of the present invention change dynamically with the use time of the equipment, which can better reflect the process of performance aging of the equipment with the increase of use time, and is more accurate and effective; at the same time, the present invention provides temperature increment alarm information J2, which alarms when the temperature does not reach the temperature alarm threshold T1 but there is a sudden increase in temperature, so as to timely discover the temperature mutation caused by the fault; the present invention provides a vibration increment alarm J4, which can timely discover the vibration mutation caused by the fault when the vibration does not reach the vibration alarm threshold Z1; the present invention provides an equipment fault characteristic value frequency alarm value J5, which can timely discover the early equipment fault; on the basis of realizing single alarms J1, J2, J3, J4, J5, the present invention assigns weight coefficients K1, K2, K3, K4, K5 to J1, J2, J3, J4, J5, and provides a comprehensive alarm S for comprehensive judgment of equipment fault conditions, thereby improving the efficiency of management personnel in judging equipment faults.

[0121] A multifunctional alarm system for a mobile device in Embodiment 2 is used to implement a multifunctional alarm method for a mobile device in Embodiment 1, comprising:

[0122] The acquisition module is used to obtain the temperature information, vibration information and speed information of the moving equipment in real time;

[0123] The temperature growth difference alarm information calculation module is used to calculate the temperature alarm threshold T1 of the measurement moment based on the temperature information of a period of time before the latest measurement moment, and obtain the temperature increment ΔT in a certain period of time before the measurement moment, and obtain the temperature increment alarm information J2 based on the temperature increment ΔT;

[0124] A vibration increment alarm information calculation module is used to calculate the vibration alarm threshold Z1 of the measurement moment based on the latest measurement moment and the vibration information of a period of time before the latest measurement moment, and obtain the vibration increment alarm information J4 of a certain period of time before the measurement moment in combination with the rotation speed information;

[0125] A fault characteristic value frequency alarm module is used to calculate the fault characteristic frequency value based on the latest measurement time, according to the vibration information of a period of time before the latest measurement time and the bearing parameters of the moving equipment, and to set the fault characteristic value frequency reference interval based on the fault characteristic frequency value, and to obtain the fault characteristic value frequency alarm value J5 according to the relationship between the fault characteristic frequency at the measurement time and the fault characteristic value frequency reference interval;

[0126] The temperature alarm module is used to compare the temperature measurement value at the latest measurement time with the temperature alarm threshold T1 to obtain the temperature alarm information J1.

[0127] A vibration alarm calculation module is used to obtain vibration alarm information J3 by comparing the vibration measurement value at the latest measurement time with the vibration alarm threshold Z1;

[0128] The judgment module is used to assign weights to the temperature alarm information J1, the temperature increment alarm information J2, the vibration alarm information J3, the vibration increment alarm information J4, and the fault characteristic value frequency alarm value J5, and sum them up, and judge whether to alarm according to the summation result.

[0129] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A multifunctional alarm method for mobile equipment, characterized in that: include: S1, real-time acquisition of temperature information, vibration information and speed information of moving equipment; S2, based on the latest measurement moment, calculate the temperature alarm threshold T1 of the measurement moment according to the temperature information of a period of time before the latest measurement moment, and obtain the temperature increment ΔT in a certain period of time before the measurement moment, and obtain the temperature increment alarm information J2 based on the temperature increment ΔT; S3, based on the latest measurement time, calculate the vibration alarm threshold Z1 of the measurement time according to the vibration information of a period of time before the latest measurement time, and obtain the vibration increment alarm information J4 of a certain period of time before the measurement time in combination with the speed information; S4, based on the latest measurement time, calculate the fault characteristic frequency value according to the vibration information of a period of time before the latest measurement time combined with the bearing parameters of the moving equipment, set the fault characteristic value frequency reference interval based on the fault characteristic frequency value, and obtain the fault characteristic value frequency alarm value J5 according to the relationship between the fault characteristic frequency at the measurement time and the fault characteristic value frequency reference interval; S5, comparing the temperature measurement value at the latest measurement time with the temperature alarm threshold T1 to obtain temperature alarm information J1, and comparing the vibration measurement value at the latest measurement time with the vibration alarm threshold Z1 to obtain vibration alarm information J3; S6. Assign weights to the temperature alarm information J1, the temperature increment alarm information J2, the vibration alarm information J3, the vibration increment alarm information J4, and the fault characteristic value frequency alarm value J5, and calculate the sum of the weights, and determine whether to alarm based on the sum result.

2. A multifunctional alarm method for mobile equipment according to claim 1, characterized in that: The specific calculation process of the temperature alarm threshold T1 is: A1. Obtain the first temperature effective value T according to all the temperature information in the period before the latest measurement time. 有效1 ; A2, the effective value of the first temperature T 有效1 Assign the first coefficient to obtain the temperature alarm threshold T1, that is, T1 = T 有效1 *Q1, Q1 is the first coefficient.

3. A multifunctional alarm method for mobile equipment according to claim 1, characterized in that: The specific calculation process of the temperature increment alarm threshold T2 is: B1. Obtain the second temperature effective value T according to all the temperature information of the first period of one hour before the latest measurement time. 有效2 , and at the same time, a third temperature effective value T is obtained based on all the temperature information of the second period one hour before the first period 有效3 ; B2. Calculate the room temperature increase value ΔT during the first period and the second period 室温 ; B3, the second temperature effective value T 有效2 Subtract the effective value of the third temperature T 有效3 and room temperature growth value ΔT 室温 , we get the temperature increment ΔT, that is, ΔT = T 有效2 -T 有效3 -ΔT 室温 ; B4. If the temperature increment ΔT>0, the temperature increment alarm information J2=1, otherwise the temperature increment alarm information J2=0.

4. A multifunctional alarm method for mobile equipment according to claim 1, characterized in that: The specific calculation process of the vibration alarm threshold Z1 is: C1. Obtaining the first vibration effective value Z based on all the vibration information in the period before the latest measurement time 有效1 ; C2, the effective value Z of the first vibration 有效1 Assign the second coefficient to obtain the vibration alarm threshold Z1, that is, Z1 = Z 有效1 *Q2, Q2 is the second coefficient.

5. A multifunctional alarm method for mobile equipment according to claim 1, characterized in that The specific calculation process of the vibration increment alarm threshold Z2 is as follows: D1, obtain the second vibration effective value Z according to all the vibration information of the third period of two hours before the latest measurement time. 有效2 , and obtain the third vibration effective value Z according to all the temperature information of the fourth period of the first two hours of the third period 有效3 ; D2, obtain the fourth vibration effective value Z according to all the vibration information of the fifth period of the hour before the latest measurement time. 有效4 , and obtain the fifth vibration effective value Z according to all the temperature information of the sixth period of the first two hours of the fifth period 有效5 , and obtain the sixth vibration effective value Z according to all the temperature information of the seventh period of the first three hours of the fifth period 有效6 ; D3. Obtaining a first speed effective value V according to all the speed information in the fifth period 有效1 , and obtain the second speed effective value V according to all the speed information of the eighth period one hour before the fifth period 有效2 ; D4, according to the first speed effective value V 有效1 and the second speed effective value V 有效2 Get the speed difference ΔV; D5. According to the second vibration effective value Z 有效2 Subtract the third vibration effective value Z 有效3 Obtain the second vibration effective difference ΔZ2; D6, according to the fourth vibration effective value Z 有效4 Subtract the fifth vibration effective value Z 有效5 Obtain the first vibration effective difference ΔZ1; D7, according to the fourth vibration effective value Z 有效4 Subtract the sixth vibration effective value Z 有效6 Obtain the third vibration effective difference ΔZ3; D8. Take the corresponding effective vibration difference according to the speed difference ΔV to determine whether the vibration increment alarm information J4 is 0 or 1. If the effective vibration difference is greater than 0, the vibration increment alarm information J4=0, otherwise, the vibration increment alarm information J4=1.

6. A multifunctional alarm method for mobile equipment according to claim 5, characterized in that: According to the speed difference ΔV, the corresponding effective difference is: If the speed difference ΔV is within the range of -rated speed*5% to rated speed*5%, the effective vibration difference is the second effective vibration difference ΔZ2; If the speed difference ΔV is less than -rated speed*5%, the effective vibration difference is the first effective vibration difference ΔZ1; If the speed difference ΔV is greater than the rated speed*5%, the effective vibration difference is the third effective vibration difference ΔZ3.

7. A multifunctional alarm method for mobile equipment according to claim 6, characterized in that: The fault characteristic value frequency reference interval is ±10% of the fault characteristic frequency value.

8. A multifunctional alarm method for mobile equipment according to claim 7, characterized in that: If the fault characteristic value at the latest measurement moment is within the fault characteristic value frequency reference interval, the frequency alarm value J5 is 0; otherwise, J5 is 1.

9. A multifunctional alarm method for mobile equipment according to claim 8, characterized in that: The specific calculation method for judging whether to alarm based on the summation result is: S=K1*J1+K2*J2+K3*J3+K4*J4+K5*J5; Among them, K1, K2, K3, K4, and K5 are the weights of the alarm outputs of temperature alarm information, temperature increment alarm information, vibration alarm information, vibration increment alarm information, and fault characteristic value frequency alarm value, respectively; When S≥1, the alarm output is triggered; when S<1, it is normal and no alarm is given.

10. A multifunctional alarm system for mobile equipment, used to implement a multifunctional alarm method for mobile equipment according to any one of claims 1 to 9, characterized in that: include: The acquisition module is used to obtain the temperature information, vibration information and speed information of the moving equipment in real time; The temperature growth difference alarm information calculation module is used to calculate the temperature alarm threshold T1 of the measurement moment based on the temperature information of a period of time before the latest measurement moment, and obtain the temperature increment ΔT in a certain period of time before the measurement moment, and obtain the temperature increment alarm information J2 based on the temperature increment ΔT; A vibration increment alarm information calculation module is used to calculate the vibration alarm threshold Z1 of the measurement moment based on the latest measurement moment and the vibration information of a period of time before the latest measurement moment, and obtain the vibration increment alarm information J4 of a certain period of time before the measurement moment in combination with the rotation speed information; A fault characteristic value frequency alarm module is used to calculate the fault characteristic frequency value based on the latest measurement time, according to the vibration information of a period of time before the latest measurement time and the bearing parameters of the moving equipment, and to set the fault characteristic value frequency reference interval based on the fault characteristic frequency value, and to obtain the fault characteristic value frequency alarm value J5 according to the relationship between the fault characteristic frequency at the measurement time and the fault characteristic value frequency reference interval; Temperature alarm, used to compare the temperature measurement value at the latest measurement time with the temperature alarm threshold T1 to obtain temperature alarm information J1, A vibration alarm calculation module is used to obtain vibration alarm information J3 by comparing the vibration measurement value at the latest measurement time with the vibration alarm threshold Z1; The judgment module is used to assign weights to the temperature alarm information J1, the temperature increment alarm information J2, the vibration alarm information J3, the vibration increment alarm information J4, and the fault characteristic value frequency alarm value J5, and sum them up, and judge whether to alarm according to the summation result.

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