CN117212194A

CN117212194A - Intelligent control system and method for oil pump

Info

Publication number: CN117212194A
Application number: CN202311280959.0A
Authority: CN
Inventors: 龙汉钊; 张宏; 李国华; 王英豪
Original assignee: Bedkelly Electric Suzhou Co ltd
Current assignee: Bedkelly Electric Suzhou Co ltd
Priority date: 2023-10-07
Filing date: 2023-10-07
Publication date: 2023-12-12

Abstract

The application relates to the technical field of intelligent control, and provides an intelligent control system and method for an oil pump, wherein the system comprises the following components: BLDC oil pump and control module: the acquisition unit in the control module is used for acquiring the running rotating speed and the running temperature of the BLDC oil pump; the judging unit judges whether to trigger the sleep mode and sets the initial sleep time according to the condition; the correcting unit is used for acquiring the ambient temperature and correcting the initial dormancy time; the delay unit is used for acquiring the task quantity difference value and setting delay dormancy time; the adjusting unit is used for acquiring the change rate of the operating parameters of the BLDC oil pump in the delay dormancy time and adjusting the delay dormancy time; the wake-up unit is used for detecting an emergency signal in real time when the BLDC oil pump is in a sleep mode, starting the BLDC oil pump according to the emergency signal and giving an early warning. The application can flexibly control the sleep time, adapt to different working conditions and task amount changes and improve the energy efficiency. The wake-up unit is used for timely coping with emergency, so that the response speed and reliability of the system are improved.

Description

Intelligent control system and method for oil pump

Technical Field

The application relates to the technical field of intelligent control, in particular to an intelligent control system and method for an oil pump.

Background

In the industrial and mechanical fields, an oil pump is a mechanical device for transporting liquid or gas from one place to another by a rotating or compressing action. The oil pump is widely applied to various industrial fields and application scenes, including petrochemical industry, agricultural irrigation, water supply systems, automobile industry and the like.

However, the conventional oil pump generally operates in a fixed manner, and the sleep mode cannot be automatically adjusted according to actual demands and environmental conditions. This results in the possibility that the oil pump is in a high power consumption state when operating, and still keeps running at a high speed even under low load or low demand, thereby causing waste of energy consumption and reduction of efficiency, and the conventional oil pump cannot start or wake up the oil pump in real time according to a specific emergency signal or demand. Resulting in an emergency situation requiring operation of the oil pump, failure to quickly start the oil pump to provide the desired functions and services, and possible system delays or malfunctions.

In order to solve the problem, an intelligent control system and method for the oil pump are provided. The intelligent control system for the system can realize intelligent management and control of the oil pump, optimize energy consumption and energy efficiency and improve the performance and reliability of the system.

Disclosure of Invention

In view of the above, the invention provides an intelligent control system and method for an oil pump, which aim to solve the problems that in the prior art, the oil pump cannot automatically adjust power consumption according to actual demands to cause resource waste and cannot timely respond according to emergency signals to cause system delay or failure.

The invention provides an intelligent control system for an oil pump, which comprises a BLDC oil pump and a control module, wherein the control module is electrically connected with the BLDC oil pump and is used for controlling the oil pump to enter a sleep mode:

wherein, the control module includes:

the acquisition unit is used for acquiring the real-time running rotating speed and the real-time running temperature of the BLDC oil pump;

the judging unit is used for comparing the real-time running rotating speed with a preset rotating speed threshold value, judging whether to trigger a sleep mode according to a comparison result, and also used for comparing the real-time running temperature with the preset temperature threshold value and setting initial sleep time according to the comparison result;

the correcting unit is used for acquiring the ambient temperature, correcting the initial sleep time according to the ambient temperature and acquiring corrected sleep time;

the delay unit is used for acquiring a task quantity difference value when the judging unit judges that the BLDC oil pump triggers the sleep mode, and setting delay sleep time according to the task quantity difference value;

The adjusting unit is used for acquiring the running parameter change rate of the BLDC oil pump in the delayed sleep time, adjusting the delayed sleep time according to the running parameter change rate and acquiring the adjusted delayed sleep time;

and the wake-up unit is used for detecting an emergency signal in real time when the BLDC oil pump is in the sleep mode, starting the BLDC oil pump according to the emergency signal and sending out early warning.

Further, the judging unit is configured to compare the real-time running rotation speed with a preset rotation speed threshold, and judge whether to trigger the sleep mode according to a comparison result, including:

presetting a minimum rotation speed threshold Z1, and judging whether to trigger a sleep mode according to the magnitude relation between the real-time running rotation speed Z0 and the preset minimum rotation speed threshold Z1;

when Z0 is less than or equal to Z1, judging that the BLDC oil pump reaches a sleep condition, and triggering a sleep mode;

when Z0 is larger than Z1, judging that the BLDC oil pump reaches a non-dormant condition and does not trigger a dormant mode, and continuously detecting data by the judging unit.

Further, the judging unit is further configured to compare the real-time running temperature with a preset temperature threshold, and set an initial sleep time according to a comparison result, including:

The judging unit is further used for presetting a first preset temperature T1, a second preset temperature W2, a third preset temperature W3 and a fourth preset temperature W4, wherein W1 is more than W2 and less than W3 and less than W4; presetting a first preset dormancy time length X1, a second preset dormancy time length X2, a third preset dormancy time length X3 and a fourth preset dormancy time length X4, wherein X1 is more than X2 and less than X3 and less than X4;

the judging unit selects preset dormancy time according to the magnitude relation between the real-time operation temperature W0 and each preset temperature;

when W1 is less than or equal to W0 and less than W2, selecting the first preset dormancy time length X1 as the initial dormancy time length;

when W2 is less than or equal to W0 and less than W3, selecting the second preset dormancy time length X2 as the initial dormancy time length;

when W3 is less than or equal to W0 and less than W4, selecting the third preset dormancy time length X3 as the initial dormancy time length;

and when W4 is less than or equal to W0, selecting the fourth preset dormancy time length X4 as the initial dormancy time length.

Further, after selecting the i-th preset sleep duration Xi, i=1, 2,3,4, the correcting unit corrects the initial sleep duration according to the ambient temperature, and obtains a corrected sleep duration, including:

the correction unit is further used for presetting a first preset environmental temperature H1, a second preset environmental temperature H2, a third preset environmental temperature H3 and a fourth preset environmental temperature H4, wherein H1 is more than H2 and less than H3 and less than H4; presetting a first preset correction coefficient A1, a second preset correction coefficient A2, a third preset correction coefficient A3 and a fourth preset correction coefficient A4, wherein A1 is more than A2 and less than A3 and less than A4;

The correction unit selects a correction coefficient to correct the initial dormancy duration Xi according to the magnitude relation between the environment temperature H0 and each preset environment temperature, and obtains corrected dormancy duration;

when H1 is less than or equal to H0 and less than H2, selecting the first preset correction coefficient A1 to correct the initial dormancy time Xi to obtain corrected dormancy time Xi A1;

when H2 is less than or equal to H0 and less than H3, selecting the second preset correction coefficient A2 to correct the initial dormancy time Xi to obtain corrected dormancy time Xi A2;

when H3 is less than or equal to H0 and less than H4, selecting the third preset correction coefficient A3 to correct the initial dormancy time Xi to obtain corrected dormancy time Xi A3;

when H4 is less than or equal to H0, the fourth preset correction coefficient A4 is selected to correct the initial dormancy time Xi, and corrected dormancy time Xi is obtained.

Further, the delay unit is configured to obtain a task amount difference when the judging unit judges that the BLDC oil pump triggers the sleep mode, and set a delay sleep time according to the difference, and includes:

the delay unit is also used for acquiring an initial task quantity R0 and a task completion quantity delta R, acquiring a task quantity difference value R0-delta R according to the initial task quantity R0 and the task completion quantity delta R, and presetting a first preset difference value C1, a second preset difference value C2, a third preset difference value C3 and a fourth preset difference value C4, wherein C1 is more than C2 and C3 is more than C4; presetting a first preset delay time Y1, a second preset delay time Y2, a third preset delay time Y3 and a fourth preset delay time Y4, wherein Y1 is more than Y2 and less than Y3 and less than Y4;

The delay unit selects preset delay time as the delay dormancy time according to the magnitude relation between the task quantity difference value R0-DeltaR and each preset difference value;

when C1 is less than or equal to R0-delta R is less than C2, selecting the first preset delay time Y1 as the delay dormancy time;

when C2 is less than or equal to R0-delta R is less than C3, selecting the second preset delay time Y2 as the delay dormancy time;

when C3 is less than or equal to R0-delta R is less than C4, selecting the third preset delay time Y3 as the delay dormancy time;

and when C4 is less than or equal to R0-delta R, selecting the fourth preset delay time Y4 as the delay dormancy time.

Further, after selecting an i-th preset delay time Yi as the delay dormancy time, i=1, 2,3,4, the adjusting unit is configured to obtain an operation parameter change rate of the BLDC oil pump in the delay dormancy time, adjust the delay dormancy time according to the operation parameter change rate, and obtain an adjusted delay dormancy time, where the operation parameter change rate includes an operation current change rate V0 and an operation rotation speed change rate L0;

the adjusting unit is further used for presetting a first preset current change rate V1, a second preset current change rate V2, a third preset current change rate V3 and a fourth preset current change rate V4, wherein V1 is more than V2 and less than 0 and less than V3 and less than V4; presetting a first preset adjustment coefficient B1, a second preset adjustment coefficient B2, a third preset adjustment coefficient B3 and a fourth preset adjustment coefficient B4, wherein B1 is more than B2 and more than 0 and less than B3 and more than B4;

The adjusting unit selects an adjusting coefficient to adjust the delay dormancy time Yi according to the magnitude relation between the current change rate V0 and each preset current change rate, and acquires the adjusted delay dormancy time;

when V1 is less than or equal to V0 and less than V2, selecting the fourth preset adjustment coefficient B4 to adjust the delay dormancy time Yi, and obtaining adjusted delay dormancy time Yi×B4;

when V2 is less than or equal to V0 and less than 0, selecting the third preset adjustment coefficient B3 to adjust the delay dormancy time Yi, and obtaining the adjusted delay dormancy time Yi which is equal to B3;

when V0 is more than or equal to 0 and less than V3, selecting the second preset adjustment coefficient B2 to adjust the delay dormancy time Yi, and obtaining adjusted delay dormancy time Yi×B2;

when V3 is less than or equal to V0 and less than V4, the first preset adjustment coefficient B1 is selected to adjust the delay dormancy time Yi, and the adjusted delay dormancy time Yi is obtained.

Further, after selecting the ith preset adjustment coefficient Bi to adjust the delayed sleep time Yi and obtaining the adjusted delayed sleep time yi×bi, the adjustment unit adjusts the delayed sleep time according to the operation parameter change rate, and obtains the adjusted delayed sleep time, and the method further includes:

Presetting a first preset rotating speed change rate L1, a second preset rotating speed change rate L2, a third preset rotating speed change rate L3 and a fourth preset rotating speed change rate L4, wherein L1 is more than L2 and less than 0 and less than L3 and less than L4;

the adjusting unit is further configured to select an adjusting coefficient according to the magnitude relation between the running rotation speed change rate L0 and each preset rotation speed change rate, and perform secondary adjustment on the adjusted delayed sleep time yi×bi, so as to obtain a secondary adjusted delayed sleep time.

Further, the adjusting unit is further configured to select an adjusting coefficient according to the magnitude relation between the running rotation speed change rate L0 and each preset rotation speed change rate, and perform secondary adjustment on the adjusted delayed sleep time yi×bi, to obtain a secondary adjusted delayed sleep time, where the secondary adjustment includes:

when L1 is less than or equal to L0 and less than L2, selecting the fourth preset adjustment coefficient B4 to carry out secondary adjustment on the adjusted delayed dormancy time Yi Bi, and obtaining the delayed dormancy time Yi Bi B4 after secondary adjustment;

when L2 is less than or equal to L0 and less than 0, selecting the third preset adjustment coefficient B3 to carry out secondary adjustment on the adjusted delayed dormancy time YiBi, and obtaining the delayed dormancy time YiBi B3 after secondary adjustment;

when L0 is less than or equal to 0 and L3, selecting the second preset adjustment coefficient B2 to carry out secondary adjustment on the adjusted delayed dormancy time YiBi, and obtaining the delayed dormancy time YiBi B2 after secondary adjustment;

When L3 is less than or equal to L0 and less than L4, selecting the first preset adjustment coefficient B1 to perform secondary adjustment on the adjusted delayed sleep time Yi Bi, and obtaining the secondary adjusted delayed sleep time Yi Bi B1.

Further, the wake-up unit is configured to detect an emergency signal in real time when the BLDC oil pump is in the sleep mode, start the BLDC oil pump according to the emergency signal, and send out an early warning, and includes:

the emergency signal comprises a liquid level low signal and a pressure abnormal signal;

when the liquid level low signal is detected, the wake-up unit controls the BLDC oil pump to exit the sleep mode and sends a liquid level low alarm;

when the pressure abnormality signal is detected, the wake-up unit controls the BLDC oil pump to exit the sleep mode and sends a pressure abnormality alarm.

Compared with the prior art, the application has the beneficial effects that:

according to the application, whether the oil pump needs to enter the sleep mode or not can be accurately judged by collecting the data such as the real-time running rotating speed and the real-time running temperature of the BLDC oil pump and comparing the data with the preset rotating speed threshold and the preset temperature threshold. According to the comparison result of the real-time data and the threshold value, the system can set the initial dormancy time, and the correction unit is used for obtaining the environment temperature for correction, so that the more accurate dormancy time is obtained. The delay unit can set delay sleep time according to the sleep mode and task amount difference value judged by the judging unit so as to avoid the influence of frequent start and stop on the system stability. The adjusting unit adjusts the delay dormancy time according to the change rate of the operation parameters of the oil pump in the delay dormancy time, so that the delay dormancy time is more accurate and is suitable for actual working conditions. When the oil pump is in the sleep mode, the emergency signal is detected in real time, the oil pump is started according to the signal, and early warning is sent out. The emergency can be responded quickly, and the safety and reliability of the system are improved.

On the other hand, the application also provides an intelligent control method for the oil pump, which is applied to the system and comprises the following steps:

step S100: acquiring the real-time operation rotating speed and the real-time operation temperature of the BLDC oil pump;

step S200: comparing the real-time running rotating speed with a preset rotating speed threshold value, judging whether to trigger a sleep mode according to a comparison result, wherein the judging unit is also used for comparing the real-time running temperature with the preset temperature threshold value, and setting initial sleep time according to the comparison result;

step S300: acquiring an ambient temperature, correcting the initial sleep time according to the ambient temperature, and acquiring corrected sleep time;

step S400: when the judging unit judges that the BLDC oil pump triggers the sleep mode, acquiring a task quantity difference value, and setting delay sleep time according to the difference value;

step S500: acquiring the running parameter change rate of the BLDC oil pump in the delayed dormancy time, and adjusting the delayed dormancy time according to the running parameter change rate to acquire the adjusted delayed dormancy time;

step S600: and when the BLDC oil pump is in the sleep mode, detecting an emergency signal in real time, starting the BLDC oil pump according to the emergency signal and giving out early warning.

It can be appreciated that the intelligent control and method for the oil pump have the same beneficial effects and are not described herein.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:

FIG. 1 is a composition diagram of intelligent control for an oil pump according to an embodiment of the present invention;

fig. 2 is a diagram of a control module in intelligent control for an oil pump according to an embodiment of the present invention;

fig. 3 is a flowchart of an intelligent control method for an oil pump according to an embodiment of the present invention.

In the figure, 100, BLDC oil pump; 200. a control module; 210. an acquisition unit; 220. a judging unit; 230. a correction unit; 240. a delay unit; 250. an adjusting unit; 260. and waking up the unit.

Detailed Description

Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.

The BLDC (Brushless DC) oil pump is an oil pump driven by a brushless direct current motor. BLDC oil pumps have higher efficiency, longer life and lower noise levels than conventional brushed dc motors. The basic structure of the BLDC oil pump includes a motor part and a pump body part. The motor part consists of a brushless dc motor, typically consisting of a stator and a rotor. The stator is a fixed part containing windings and poles. The rotor is the rotating part, containing permanent magnets. The pump body portion includes a suction port, a discharge port, an impeller, and the like.

However, when the intelligent oil pump is applied, the oil pump cannot automatically switch the working mode according to real-time data and external signals, and cannot be intelligently adjusted according to actual requirements. This results in waste of energy, instability of the system and a decrease in response capacity. Therefore, in order to improve energy efficiency, reduce energy consumption and improve reliability of the system, it is very important to control and manage the oil pump by adopting the intelligent regulation control system.

Referring to fig. 1-2, the present embodiment provides an intelligent control system for an oil pump, which includes a BLDC oil pump 100 and a control module 200, wherein the control module 200 is electrically connected to the BLDC oil pump 100, and is used for controlling the oil pump to enter a sleep mode. The control module 200 includes an acquisition unit 210, a judgment unit 220, a correction unit 230, a delay unit 240, an adjustment unit 250, and a wake-up unit 260. The collection unit 210 is used for obtaining the real-time operation rotation speed and the real-time operation temperature of the BLDC oil pump 100. The judging unit 220 is configured to compare the real-time running speed with a preset speed threshold, judge whether to trigger the sleep mode according to the comparison result, and compare the real-time running temperature with the preset temperature threshold, and set an initial sleep time according to the comparison result. The correction unit 230 is configured to obtain an ambient temperature, correct the initial sleep duration according to the ambient temperature, and obtain a corrected sleep duration. The delay unit 240 is used for obtaining a task amount difference value and setting a delay sleep time according to the difference value when the judging unit 220 judges that the BLDC oil pump 100 triggers the sleep mode. The adjusting unit 250 is configured to obtain a change rate of an operation parameter of the BLDC oil pump 100 in the delayed sleep time, adjust the delayed sleep time according to the change rate of the operation parameter, and obtain the adjusted delayed sleep time. The wake-up unit 260 is configured to detect an emergency signal in real time when the BLDC oil pump 100 is in the sleep mode, and start the BLDC oil pump 100 and issue an early warning according to the emergency signal.

Specifically, the acquisition unit 210 is responsible for acquiring the real-time operation rotational speed and the real-time operation temperature of the BLDC oil pump 100. The judging unit 220 compares the real-time running rotation speed with a preset rotation speed threshold value, and judges whether to trigger the sleep mode according to the comparison result. Meanwhile, the judging unit 220 also compares the real-time running temperature with a preset temperature threshold value, and sets an initial sleep time according to the comparison result. The method and the device realize that the proper sleep time length is determined according to the actual running condition and temperature of the pump body so as to avoid entering the sleep state too early or too late. The correction unit 230 obtains the ambient temperature, and corrects the initial sleep time according to the ambient temperature, to obtain a corrected sleep time. The influence of environmental factors on the sleep time is fully considered, so that the sleep mode is more accurate and reliable. The delay unit 240 obtains the task amount difference after the judging unit 220 triggers the sleep mode, and sets the delay sleep time according to the difference. Frequent switching of sleep modes due to transient task or demand changes is avoided, thus stabilizing the operation of the oil pump. The adjusting unit 250 is configured to obtain a change rate of an operation parameter of the oil pump in the delayed sleep time, and adjust the delayed sleep time according to the change rate, so as to obtain an adjusted delayed sleep time. And the dynamic change of the operation parameters of the oil pump is considered, so that the sleep mode is more flexible and intelligent. Finally, the wake-up unit 260 detects the emergency signal in real time when the oil pump is in the sleep mode, starts the oil pump according to the emergency signal, and gives an early warning. The oil pump can be quickly responded and started under the emergency condition, and the safety and reliability of the system are improved.

It can be appreciated that by automatically adjusting the sleep mode and sleep wake-up functions, the energy efficiency of the oil pump can be improved, the energy consumption can be reduced, and the wear and maintenance costs can be reduced. Meanwhile, the intelligent control system can carry out intelligent adjustment according to real-time data and external signals, and stability and response capacity of the system are improved. In addition, through the early warning function, emergency can be found and handled in time, the security and the reliability of system are promoted.

In some embodiments of the present application, the determining unit 220 is configured to compare the real-time running speed with a preset speed threshold, and determine whether to trigger the sleep mode according to the comparison result, including: and presetting a minimum rotation speed threshold Z1, and judging whether to trigger a sleep mode according to the magnitude relation between the real-time running rotation speed Z0 and the preset minimum rotation speed threshold Z1. When Z0 is less than or equal to Z1, the BLDC oil pump 100 is judged to reach the sleep condition, and the sleep mode can be triggered. When Z0 > Z1, it is determined that the BLDC oil pump 100 reaches the non-sleep condition, the sleep mode is not triggered, and the determination unit 220 continues to detect data.

Specifically, if the real-time running rotational speed Z0 is less than or equal to the preset minimum rotational speed threshold Z1, that is, Z0 is less than or equal to Z1, it is determined that the oil pump reaches the sleep condition, and the sleep mode may be triggered. This means that the operating speed of the oil pump is below the preset threshold, and entering sleep mode at this time can save energy and reduce unnecessary operation due to reduced workload or reduced system requirements. If the real-time running rotational speed Z0 is greater than the preset minimum rotational speed threshold Z1, that is, Z0 > Z1, it is determined that the oil pump does not reach the sleep condition, the sleep mode is not triggered, and the determining unit 220 is allowed to continue to monitor data. At this time, the running speed of the oil pump is higher than a preset threshold, and the normal running state is maintained at this time due to the reasons of increasing the working load or increasing the system demand, etc., so as to meet the demand of the system.

It can be appreciated that the present embodiment enables intelligent control and adaptive adjustment of the oil pump. By setting the comparison of the minimum rotation speed threshold and the real-time rotation speed, the sleep mode can be triggered or canceled according to the actual running condition, so that the energy efficiency is optimized and the resources are effectively utilized. In addition, the judging unit 220 further has a continuous monitoring function, so that the running state of the oil pump can be detected in real time, and the stability and reliability of the system are ensured. The intelligent judging mechanism can also set different thresholds according to different working scenes and requirements so as to adapt to diversified application environments, and further improve the flexibility and adaptability of the system.

In some embodiments of the present application, the determining unit 220 is further configured to compare the real-time operating temperature with a preset temperature threshold, and set an initial sleep time according to the comparison result, including: the determining unit 220 is further configured to preset a first preset temperature T1, a second preset temperature W2, a third preset temperature W3, and a fourth preset temperature W4, where W1 < W2 < W3 < W4. The method comprises the steps of presetting a first preset dormancy time length X1, a second preset dormancy time length X2, a third preset dormancy time length X3 and a fourth preset dormancy time length X4, wherein X1 is more than X2 and less than X3 and less than X4. The judging unit 220 selects the preset sleep time according to the magnitude relation between the real-time operation temperature W0 and each preset temperature. When W1 is less than or equal to W0 and less than W2, selecting a first preset dormancy time length X1 as an initial dormancy time length. When W2 is less than or equal to W0 and less than W3, selecting a second preset dormancy time length X2 as an initial dormancy time length. When W3 is less than or equal to W0 and less than W4, selecting a third preset dormancy time length X3 as an initial dormancy time length. And when W4 is less than or equal to W0, selecting a fourth preset dormancy time length X4 as an initial dormancy time length.

Specifically, when the real-time operation temperature W0 satisfies different temperature intervals, a corresponding preset sleep duration is selected as the initial sleep duration. For example, when W1 is less than or equal to W0 < W2, the first preset sleep period X1 is selected as the initial sleep period. When W2 is less than or equal to W0 and less than W3, selecting the second preset dormancy time length X2 as the initial dormancy time length, and the like. The design of this determination unit 220 enables the sleep mode to be automatically adjusted according to the change of the real-time operation temperature. When the real-time running temperature of the oil pump exceeds or reaches a preset temperature threshold, entering a corresponding temperature interval and setting initial dormancy time length, thereby realizing automatic dormancy control of the oil pump.

It will be appreciated that the specific temperature values and sleep durations at the time of application depend on the application requirements and control strategy. The automatic sleep control device can be adjusted according to actual conditions so as to select the most suitable temperature value and sleep time length, is favorable for realizing the automatic sleep control of the oil pump and meets specific requirements. The flexibility enables temperature selection and sleep time to have infinite possibility in theory, personalized setting can be carried out according to different application conditions, and the application range of the device is effectively improved.

It can be understood that by selecting a proper sleep time according to the real-time operation temperature, the problems of overheating, loss increase and the like caused by overhigh temperature of the oil pump can be effectively avoided, and the service life of the oil pump can be prolonged. Meanwhile, different dormancy time lengths are set according to different temperature intervals, so that the energy efficiency requirements under different working conditions can be met more flexibly, and the energy efficiency performance of the system is improved. In addition, the design also has self-adaptability, and can dynamically adjust the sleep time length according to the temperature change under different environments, so that the application range of the oil pump is effectively improved.

In some embodiments of the present application, after selecting the i-th preset sleep duration Xi, i=1, 2,3,4, the correction unit 230 corrects the initial sleep duration according to the ambient temperature, and obtains the corrected sleep duration, including: the correction unit 230 is further configured to preset a first preset environmental temperature H1, a second preset environmental temperature H2, a third preset environmental temperature H3, and a fourth preset environmental temperature H4, where H1 < H2 < H3 < H4. The method comprises the steps of presetting a first preset correction coefficient A1, a second preset correction coefficient A2, a third preset correction coefficient A3 and a fourth preset correction coefficient A4, wherein A1 is more than A2 and less than A3 and less than A4. The correction unit 230 selects a correction coefficient to correct the initial sleep duration Xi according to the magnitude relation between the environmental temperature H0 and each preset environmental temperature, and obtains the corrected sleep duration.

Specifically, when H1 is less than or equal to H0 and less than H2, a first preset correction coefficient A1 is selected to correct the initial sleep duration Xi, and corrected sleep duration xi×a1 is obtained. When H2 is less than or equal to H0 and less than H3, a second preset correction coefficient A2 is selected to correct the initial dormancy time Xi, and corrected dormancy time Xi is obtained. When H3 is less than or equal to H0 and less than H4, a third preset correction coefficient A3 is selected to correct the initial dormancy time Xi to obtain corrected dormancy time Xi A3. When H4 is less than or equal to H0, a fourth preset correction coefficient A4 is selected to correct the initial dormancy time Xi, and corrected dormancy time Xi is obtained.

Specifically, when the ambient temperature is higher, the dormant heat dissipation of the oil pump is not facilitated, the dormant time of the oil pump needs to be prolonged according to the actual application condition in order to fully ensure the operation safety of the oil pump, and otherwise, the dormant time needs to be reduced to enlarge the working capacity of the oil pump. The correction unit 230 is designed so that the sleep time period can be automatically adjusted according to the change of the real-time ambient temperature. By selecting an appropriate correction coefficient according to the magnitude of the ambient temperature, the sleep time length can be adjusted under different ambient conditions, so that more accurate and adaptive sleep control is realized.

It can be understood that the preset correction coefficient in the application is only used for fully describing the correction process, the specific numerical value and the number can be freely selected according to the application condition, and personalized setting is carried out according to different application conditions.

It can be appreciated that by correcting the initial sleep time based on the real-time ambient temperature, the energy efficiency requirements under different ambient conditions can be better accommodated. The magnitude relation of the preset environmental temperature is considered in the selection of the correction coefficient, so that correction of different degrees is performed in different temperature intervals, and the sleep time of the oil pump is controlled more accurately. The phenomenon of excessive dormancy or insufficient dormancy is avoided, the working stability of the system is improved, and the service life of the oil pump is prolonged. Meanwhile, correction is carried out according to the actual environment temperature, and the device can adapt to the change of different working environments.

In some embodiments of the present application, the delay unit 240 is configured to obtain a task amount difference when the judging unit 220 judges that the BLDC oil pump 100 triggers the sleep mode, and to set a delay sleep time according to the difference, including: the delay unit 240 is further configured to obtain an initial task amount R0 and a task completion amount Δr, obtain task amount difference values R0- Δr according to the initial task amount R0 and the task completion amount Δr, and preset a first preset difference value C1, a second preset difference value C2, a third preset difference value C3, and a fourth preset difference value C4, where C1 < C2 < C3 < C4. The first preset delay time Y1, the second preset delay time Y2, the third preset delay time Y3 and the fourth preset delay time Y4 are preset, and Y1 is more than Y2 and less than Y3 and less than Y4. The delay unit 240 selects a preset delay time as the delay sleep time according to the magnitude relation between the task amount difference R0- Δr and each preset difference.

Specifically, when C1 is less than or equal to R0-DeltaR < C2, the first preset delay time Y1 is selected as the delay dormancy time. When C2 is less than or equal to R0-DeltaR is less than C3, selecting a second preset delay time Y2 as delay dormancy time. When C3 is less than or equal to R0-DeltaR is less than C4, selecting a third preset delay time Y3 as delay dormancy time. And when C4 is less than or equal to R0-delta R, selecting a fourth preset delay time Y4 as delay dormancy time.

Specifically, the initial task amount R0 may be set manually, and the task completion amount Δr may be calculated from the oil pump operation time and the oil pump operation power.

It can be understood that the specific data size and the specific data number of the delay time can be set individually according to different application conditions, so that the delay time has infinite possibility theoretically, and the application range of the delay time is improved.

It will be appreciated that the oil pump can delay dormancy according to the change in the amount of tasks after triggering the dormancy mode to ensure that the current task is completed. And setting the delay dormancy time, and adapting to different task conditions by adopting different preset delay times according to the difference value of the task quantity. The setting of the delay dormancy considers the magnitude of the task quantity difference, and selects proper delay time according to different task requirements and working states, thereby improving the working efficiency and task completion capacity of the system. Meanwhile, the flexibility and the adaptivity of the delayed dormancy can adapt to the changes of different task loads and working environments, and the stability and the reliability of the system are effectively improved.

In some embodiments of the present application, after selecting the i-th preset delay time Yi as the delay sleep time, the adjusting unit 250 is configured to obtain an operating parameter change rate of the BLDC oil pump 100 in the delay sleep time, adjust the delay sleep time according to the operating parameter change rate, and obtain an adjusted delay sleep time, where the operating parameter change rate includes an operating current change rate V0 and an operating rotation speed change rate L0. The adjusting unit 250 is further configured to preset a first preset current change rate V1, a second preset current change rate V2, a third preset current change rate V3, and a fourth preset current change rate V4, where V1 < V2 < 0 < V3 < V4. The first preset adjustment coefficient B1, the second preset adjustment coefficient B2, the third preset adjustment coefficient B3 and the fourth preset adjustment coefficient B4 are preset, and B1 is more than B2 and less than 0 and less than B3 and less than B4. The adjusting unit 250 selects an adjusting coefficient to adjust the delay sleep time Yi according to the magnitude relation between the current change rate V0 and each preset current change rate, and obtains the adjusted delay sleep time.

Specifically, when V1 is less than or equal to V0 and less than V2, a fourth preset adjustment coefficient B4 is selected to adjust the delay dormancy time Yi, and the adjusted delay dormancy time yi×b4 is obtained. When V2 is less than or equal to V0 and less than 0, a third preset adjustment coefficient B3 is selected to adjust the delay dormancy time Yi, and the adjusted delay dormancy time Yi is obtained. When V0 is more than or equal to 0 and less than V3, a second preset adjustment coefficient B2 is selected to adjust the delay dormancy time Yi, and the adjusted delay dormancy time Yi is obtained. When V3 is less than or equal to V0 and less than V4, a first preset adjustment coefficient B1 is selected to adjust the delay dormancy time Yi, and the adjusted delay dormancy time Yi is obtained.

Specifically, the current change rate refers to the rate at which the current changes over time. In an electric motor or other electrical device, the rate of change of current may reflect the changing condition of the device load. When the load increases, the current will correspondingly increase, and when the load decreases, the current will correspondingly decrease. The magnitude of the current change rate may be indicative of the speed and magnitude of the load change. The rotation speed change rate refers to a rate at which the rotation speed changes with time. When the current change rate of the system fluctuates greatly, indicating that the load of the system changes more frequently, there may be a case where the instantaneous load increases or decreases. In such a case, the delay sleep time may be increased or decreased accordingly in order to ensure the stability of the system and the normal completion of the tasks. When the current change rate is increased, the working efficiency of the oil pump is increased, and the delay dormancy time is shortened at the moment so as to avoid the idle running condition of the oil pump after the task amount is completed.

It will be appreciated that depending on the magnitude of the current rate of change, the system may adaptively adjust the delay sleep time to achieve a more efficient and energy efficient operating state. By reasonably adjusting the delay dormancy time, the energy consumption can be reduced to the maximum extent on the premise of ensuring the normal operation of the system, and the service life of the equipment can be prolonged.

In some embodiments of the present application, after selecting the i-th preset adjustment coefficient Bi to adjust the delayed sleep time Yi and obtaining the adjusted delayed sleep time Yi, the adjusting unit 250 adjusts the delayed sleep time according to the change rate of the operation parameter to obtain the adjusted delayed sleep time, and further includes: the first preset rotating speed change rate L1, the second preset rotating speed change rate L2, the third preset rotating speed change rate L3 and the fourth preset rotating speed change rate L4 are preset, and L1 is more than L2 and less than 0 and less than L3 and less than L4. The adjusting unit 250 is further configured to select an adjusting coefficient according to the magnitude relation between the running rotational speed change rate L0 and each preset rotational speed change rate, and perform secondary adjustment on the adjusted delayed sleep time yi×bi, so as to obtain the secondary adjusted delayed sleep time.

Specifically, when L1 is less than or equal to L0 and less than L2, a fourth preset adjustment coefficient B4 is selected to perform secondary adjustment on the adjusted delayed sleep time Yi Bi, and the delayed sleep time Yi Bi B4 after secondary adjustment is obtained. When L2 is less than or equal to L0 and less than 0, selecting a third preset adjustment coefficient B3 to carry out secondary adjustment on the adjusted delayed dormancy time Yi and Bi, and obtaining the delayed dormancy time Yi and Bi B3 after secondary adjustment. When L0 is less than or equal to 0 and L3, selecting a second preset adjustment coefficient B2 to carry out secondary adjustment on the adjusted delayed dormancy time Yi and Bi, and obtaining the delayed dormancy time Yi and Bi B2 after secondary adjustment. When L3 is less than or equal to L0 and less than L4, selecting a first preset adjustment coefficient B1 to carry out secondary adjustment on the adjusted delayed dormancy time Yi Bi, and obtaining the delayed dormancy time Yi Bi B1 after secondary adjustment.

It will be appreciated that the use of four adjustment coefficients herein is merely illustrative of the adjustment process and is not intended to limit the number of adjustment coefficients. The number and the size of the adjustment coefficients mentioned in the description can be determined according to practical situations, and the adjustment of the delay dormancy time can be personalized. This means that the number and range of adjustment coefficients can be adjusted as needed to achieve a more flexible and accurate adjustment.

It will be appreciated that the actual rotational speed of the oil pump is affected in many ways during operation, such as current, voltage, bearings, lubrication, etc. Therefore, the change rate of the rotational speed of the oil pump is obtained, and the delay dormancy time is secondarily adjusted according to the change rate of the rotational speed of the oil pump, so that the running condition of the oil pump can be more met, and the influence of external conditions on dormancy of the oil pump is reduced. The most suitable delayed sleep time can be determined more precisely according to the actual operation of the system. By dynamically adjusting the delay dormancy time, the system can be dormant more flexibly in different running states, so that the energy efficiency and stability of the system are effectively improved. In addition, the system can be adjusted according to actual current and rotation speed change conditions, challenges in actual scenes such as load change and fluctuation of working conditions can be effectively met, and the performance and response capability of the system are improved.

In some embodiments of the present application, the wake-up unit 260 is configured to detect an emergency signal in real time when the BLDC oil pump is in the sleep mode, and start the BLDC oil pump 100 and issue an early warning according to the emergency signal, including: the emergency signal includes a low liquid level signal and a pressure anomaly signal.

Specifically, when the liquid level low signal is detected, the wake-up unit 260 controls the BLDC oil pump 100 to exit the sleep mode and transmits a liquid level low alarm. When the pressure abnormality signal is detected, the wake-up unit 260 controls the BLDC oil pump 100 to exit the sleep mode and transmits a pressure abnormality alarm.

It will be appreciated that the oil pump is not able to normally supply liquid to the system or apparatus when the liquid level is below the desired level. This may result in equipment failure to function properly, process interruption, or failure to provide the desired lubrication, cooling, or fluid transfer functions. Low fluid levels may also mean that the system has problems with leakage or other loss of fluid, requiring timely maintenance and replenishment of the fluid. When the pressure of the system exceeds a safe range, it may negatively affect the equipment, piping or process. Excessive pressures may cause pipe breakage, equipment damage, or system failure. Too low a pressure may result in the device not functioning properly, the fluid flow rate being slowed or interrupted, and even causing gas-liquid mixing or other instability.

It will be appreciated that interrupting dormancy and starting the oil pump in the event of an anomaly may be accomplished by providing enough fluid to maintain the fluid level, make up for fluid loss or maintain the required pressure. This prevents equipment damage, process interruption or system failure and ensures system stability and reliability. The start of the oil pump can respond to the abnormal signal of the liquid level low or the pressure in time to restore the normal liquid supply or the pressure, thereby ensuring the system to operate according to the expected and avoiding the potential equipment damage and the production interruption.

In the above embodiment, the intelligent control system can accurately judge whether the oil pump needs to enter the sleep mode by collecting the data such as the real-time running speed and the real-time running temperature of the BLDC oil pump and comparing the data with the preset speed threshold and temperature threshold. According to the comparison result of the real-time data and the threshold value, the system can set the initial dormancy time, and the correction unit is used for obtaining the environment temperature for correction, so that the more accurate dormancy time is obtained. The delay unit can set delay sleep time according to the sleep mode and task amount difference value judged by the judging unit so as to avoid the influence of frequent start and stop on the system stability. The adjusting unit adjusts the delay dormancy time according to the change rate of the operation parameters of the oil pump in the delay dormancy time, so that the delay dormancy time is more accurate and is suitable for actual working conditions. When the oil pump is in the sleep mode, the emergency signal is detected in real time, the oil pump is started according to the signal, and early warning is sent out. The emergency can be responded quickly, and the safety and reliability of the system are improved.

In another preferred mode of the foregoing embodiment, referring to fig. 3, the present embodiment provides an intelligent control method for an oil pump, which is applied to the intelligent control system for an oil pump, including:

step S100: the real-time operation rotational speed and the real-time operation temperature of the BLDC oil pump 100 are obtained.

Step S200: the real-time running speed is compared with a preset speed threshold, whether the sleep mode is triggered is judged according to the comparison result, and the judging unit 220 is further used for comparing the real-time running temperature with the preset temperature threshold, and setting the initial sleep time according to the comparison result.

Step S300: and acquiring the ambient temperature, correcting the initial dormancy time according to the ambient temperature, and acquiring the corrected dormancy time.

Step S400: when the judging unit 220 judges that the BLDC oil pump 100 triggers the sleep mode, a task amount difference is obtained, and a delay sleep time is set according to the difference.

Step S500: the operating parameter change rate of the BLDC oil pump 100 in the delayed sleep time is obtained, the delayed sleep time is adjusted according to the operating parameter change rate, and the adjusted delayed sleep time is obtained.

Step S600: the emergency signal is detected in real time when the BLDC oil pump is in the sleep mode, and the BLDC oil pump 100 is started and an early warning is given according to the emergency signal.

It can be appreciated that the intelligent control system and method for the oil pump have the same beneficial effects and are not described herein.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

Finally, it should be noted that: the above embodiments are only for illustrating the technical aspects of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the above embodiments, it should be understood by those of ordinary skill in the art that: modifications and equivalents may be made to the specific embodiments of the invention without departing from the spirit and scope of the invention, which is intended to be covered by the claims.

Claims

1. The intelligent control system for the oil pump is characterized by comprising a BLDC oil pump and a control module, wherein the control module is electrically connected with the BLDC oil pump and is used for controlling the oil pump to enter a sleep mode:

wherein, the control module includes:

2. The intelligent control system for an oil pump according to claim 1, wherein the judging unit is configured to compare the real-time running rotational speed with a preset rotational speed threshold, and judge whether to trigger a sleep mode according to a comparison result, and includes:

3. The intelligent control system for an oil pump according to claim 1, wherein the judging unit is further configured to compare the real-time operating temperature with a preset temperature threshold, and set an initial sleep time period according to a comparison result, and includes:

4. The intelligent control system for an oil pump according to claim 3, wherein after selecting an i-th preset sleep period Xi, i=1, 2,3,4, the correction unit corrects the initial sleep period according to the ambient temperature, and obtains a corrected sleep period, including:

5. The intelligent control system for an oil pump according to claim 1, wherein the delay unit is configured to obtain a task amount difference when the determination unit determines that the BLDC oil pump triggers the sleep mode, and to set a delay sleep time based on the difference, comprising:

6. The intelligent control system for an oil pump according to claim 5, wherein after selecting an i-th preset delay time Yi as the delay sleep time, i=1, 2,3,4, the adjusting unit is configured to obtain an operation parameter change rate of the BLDC oil pump in the delay sleep time, adjust the delay sleep time according to the operation parameter change rate, and obtain an adjusted delay sleep time, where the operation parameter change rate includes an operation current change rate V0 and an operation rotation speed change rate L0;

7. The intelligent control system for an oil pump according to claim 6, wherein after selecting an i-th preset adjustment coefficient Bi to adjust the delayed sleep time Yi and obtaining an adjusted delayed sleep time Yi, the adjusting unit adjusts the delayed sleep time according to the operation parameter change rate, and obtains an adjusted delayed sleep time, further comprising:

8. The intelligent control system for an oil pump according to claim 7, wherein the adjusting unit is further configured to select an adjustment coefficient according to a magnitude relation between the running rotational speed change rate L0 and each preset rotational speed change rate, perform secondary adjustment on the adjusted delayed sleep time Yi x Bi, and obtain the secondary adjusted delayed sleep time, and the method includes:

9. The intelligent control system for an oil pump according to claim 1, wherein the wake-up unit is configured to detect an emergency signal in real time when the BLDC oil pump is in the sleep mode, activate the BLDC oil pump according to the emergency signal, and issue an early warning, and includes:

10. An intelligent control method for an oil pump, applied to the intelligent control system for the pump according to any one of claims 1 to 9, comprising:

step S500: acquiring the running parameter change rate of the BLDC oil pump in the delayed sleep time, adjusting the delayed sleep time according to the running parameter change rate, and acquiring the adjusted delayed sleep time: