CN112343890A - Hydraulic system on-line monitoring system - Google Patents
Hydraulic system on-line monitoring system Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention discloses an online monitoring system of a hydraulic system, which comprises an acquisition system and an analysis monitoring scheduling system, wherein the acquisition system and the analysis monitoring scheduling system are connected with the hydraulic system; the acquisition system is used for acquiring data signals at each position in the hydraulic system; the analysis monitoring scheduling system evaluates the running state of the hydraulic system according to the data signals of all positions in the hydraulic system, which are acquired by the acquisition system; the analysis monitoring scheduling system comprises an operating state monitoring and evaluating module, a fault storage database, an infinite radio frequency module and a remote monitoring center server. The invention can feed back the working state of the hydraulic system in real time by collecting the operation parameters of key components in the hydraulic system on line in real time, and can give an alarm in time before a fault occurs or becomes a serious fault, thereby not only ensuring the safe and stable operation of the hydraulic system, but also improving the automation level of monitoring of the hydraulic system.
Description
Technical Field
The invention relates to the technical field of online monitoring, in particular to an online monitoring system of a hydraulic system.
Background
With the increasing requirement of modern products on reliability, the modern products are required to be capable of accurately and quickly diagnosing and positioning faults and providing auxiliary decision support for maintenance personnel, so that the maintenance downtime is effectively reduced, and the maintainability and comprehensive guarantee of product equipment are improved. The original mode of relying on designers for fault location and maintenance is far from meeting the requirement.
The hydraulic system is widely applied to various industrial fields, is one of important power sources for providing power for mechanical devices, and is one of important component devices for ensuring the effective operation of the mechanical devices. The normal operation of the mechanical device system is directly influenced by the operating performance of the hydraulic system, and the operation performance of the hydraulic system is guaranteed to be the key for guaranteeing the operation of the mechanical device.
Because the hydraulic system realizes energy conversion and transmission through the pressurized medium in the closed pipeline, the fault of the hydraulic system has the characteristics of concealment, diversity, uncertainty, complex cause-effect relationship and the like, the difficulty of fault diagnosis and detection is increased, and once the hydraulic system breaks down, huge personnel loss and economic loss can be caused.
Therefore, it is urgently needed to develop an online monitoring system for a hydraulic system, so that the operation parameters of key components in the hydraulic system can be acquired online in real time, the working state of the hydraulic system can be fed back in real time, and an alarm can be given in time when a fault occurs, so that the safe and stable operation of the hydraulic system can be ensured.
Disclosure of Invention
The invention aims to overcome the defects and provides an online monitoring system for a hydraulic system, which can feed back the working state of the hydraulic system in real time by acquiring the operation parameters of key parts in the hydraulic system online in real time and can give an alarm in time before a fault occurs or develops into a serious fault, thereby not only ensuring the safe and stable operation of the hydraulic system, but also improving the automation level of the monitoring of the hydraulic system.
In order to achieve the purpose, the invention provides the following technical scheme that the hydraulic system online monitoring system comprises an acquisition system and an analysis monitoring scheduling system, wherein the acquisition system and the analysis monitoring scheduling system are connected with each other;
the acquisition system is used for acquiring data signals at each position in the hydraulic system;
and the analysis monitoring and dispatching system evaluates the running state of the hydraulic system according to the data signals of all the positions in the hydraulic system, which are acquired by the acquisition system.
The online monitoring system for the hydraulic system comprises a sensor assembly and a data acquisition module, wherein the sensor assembly is connected with the hydraulic system; the analysis monitoring scheduling system comprises an operating state monitoring and evaluating module, a fault storage database, an infinite radio frequency module and a remote monitoring center server;
the data acquisition module is used for receiving the monitoring numerical value output by the sensor assembly, converting the monitoring numerical value into a digital signal and then sending the digital signal to the running state monitoring and evaluating module;
the running state monitoring and evaluating module comprises a reference database, a data calling module and an analyzing module, the analyzing module receives a monitoring value output by the sensor assembly and sent by the data acquisition module, a standard threshold corresponding to the monitoring value in the reference database is called through the data calling module, the analyzing module compares the monitoring value with the standard threshold corresponding to the monitoring value, if the monitoring value is consistent with the standard threshold corresponding to the monitoring value, a fault-free diagnosis monitoring report is automatically generated, and if the monitoring value is not consistent with the standard threshold corresponding to the monitoring value, a fault risk diagnosis monitoring report is automatically generated; the fault-free monitoring report comprises monitoring time, a corresponding monitoring numerical value and a diagnosis monitoring result description, and the fault risk diagnosis monitoring report comprises the monitoring time, the corresponding monitoring numerical value, a fault position, a fault reason and a fault diagnosis analysis description;
the remote monitoring center server comprises a central processing unit and a display module;
the fault storage database is used for storing the fault risk diagnosis monitoring report;
the wireless radio frequency module is used for receiving the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report output by the running state monitoring and evaluating module and transmitting the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report to the central processing unit;
the central processing unit generates reminding information according to the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report which are sent by the infinite radio frequency module, and the reminding information is displayed through the display module.
The above-mentioned hydraulic system on-line monitoring system, wherein, the sensor assembly includes a first vibration sensor disposed on the hydraulic pump, a first speed sensor disposed on the hydraulic pump, a first noise sensor disposed on the hydraulic pump, a first pressure sensor disposed at the inlet of the hydraulic pump, a second pressure sensor disposed at the outlet of the hydraulic pump, a first current sensor disposed on the electric motor, a second noise sensor disposed on the electric motor, a second speed sensor disposed on the output shaft of the electric motor, a third speed sensor disposed on the hydraulic motor, a third noise sensor disposed on the hydraulic motor, a first temperature sensor disposed on the hydraulic motor, a torque sensor disposed on the hydraulic motor, a differential pressure sensor disposed in the filter, a second speed sensor disposed on the hydraulic pump, a second noise sensor disposed on the output shaft of the electric motor, a third speed sensor disposed on the, The filter comprises a first temperature sensor arranged in the filter, a second pressure sensor arranged at an outlet of a stop valve, a first flow sensor arranged at an outlet of the stop valve, a third temperature sensor arranged at an outlet of the stop valve, a fourth pressure sensor arranged at an outlet of a one-way valve, a second flow sensor arranged at an outlet of the one-way valve, a fourth temperature sensor arranged at an outlet of the one-way valve, a fifth pressure sensor arranged at an outlet of an overflow valve, a third flow sensor arranged at an outlet of the overflow valve, a fifth temperature sensor arranged at an outlet of the overflow valve, a sixth pressure sensor arranged at an outlet of the restrictor, a fourth flow sensor arranged at an outlet of the restrictor, a sixth temperature sensor arranged at an outlet of the restrictor, a seventh pressure sensor arranged at an outlet of a servo valve, a first pressure sensor arranged at an outlet of the servo, The hydraulic control system comprises a fifth flow sensor arranged at the outlet of the servo valve, a seventh temperature sensor arranged at the outlet of the servo valve, an eighth pressure sensor arranged at the P port of the electromagnetic valve, a sixth flow sensor arranged at the P port of the electromagnetic valve, an eighth temperature sensor arranged at the P port of the electromagnetic valve, a ninth pressure sensor arranged at the outlet of the unloading valve, a seventh flow sensor arranged at the outlet of the unloading valve and a ninth temperature sensor arranged at the outlet of the unloading valve.
The above online monitoring system for the hydraulic system, wherein the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the fifth temperature sensor, the sixth temperature sensor, the seventh temperature sensor, the eighth temperature sensor, and the ninth temperature sensor are all GWSD 100/98;
the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, the fifth pressure sensor, the sixth pressure sensor, the seventh pressure sensor, the eighth pressure sensor, and the ninth pressure sensor are all PMP4000 amplification output pressure sensors.
In the above online monitoring system for a hydraulic system, the analyzing, monitoring and scheduling system further includes an alarm module, and the alarm module is in control connection with the remote monitoring center server; the alarm module is a buzzer alarm, the hydraulic pump, the motor, the hydraulic motor, the filter, the stop valve, the one-way valve, the overflow valve, the throttler, the servo valve, the electromagnetic valve and the unloading valve are all provided with the buzzer alarm, and the remote monitoring center server starts the corresponding buzzer alarm according to the fault position in the fault risk diagnosis monitoring report.
In the above online monitoring system for a hydraulic system, the analyzing, monitoring and scheduling system further includes at least one mobile terminal pre-bound to the central processing unit, and the central processing unit sends the received fault-free diagnosis monitoring report or the received fault risk diagnosis monitoring report and the reminding information generated by the remote monitoring center to the at least one mobile terminal.
The online monitoring system for the hydraulic system is characterized in that the mobile terminal is one or more of a smart phone, a tablet personal computer and a portable computer.
Compared with the prior art, the invention has the beneficial effects that: the invention can feed back the working state of the hydraulic system in real time by collecting the operation parameters of key components in the hydraulic system on line in real time, and can give an alarm in time before a fault occurs or becomes a serious fault, thereby not only ensuring the safe and stable operation of the hydraulic system, but also improving the automation level of monitoring of the hydraulic system.
Drawings
Fig. 1 is a schematic structural diagram of an online monitoring system of a hydraulic system in embodiment 1.
Fig. 2 is a schematic structural diagram of an acquisition system in the on-line monitoring system of the hydraulic system in embodiment 1.
Fig. 3 is a schematic structural diagram of an analysis monitoring scheduling system in an online monitoring system of a hydraulic system in embodiment 1.
Fig. 4 is a schematic structural diagram of an operation state monitoring and evaluating module in the online monitoring system of the hydraulic system in embodiment 1.
Fig. 5 is a schematic structural diagram of a remote monitoring center server in an online monitoring system of a hydraulic system in embodiment 1.
Fig. 6 is a schematic structural diagram of an online monitoring system of a hydraulic system in embodiment 2.
The correspondence between each mark and the part name is as follows:
the system comprises an acquisition system 1, a sensor assembly 101, a data acquisition module 102, an analysis monitoring scheduling system 2, an operation state monitoring and evaluation module 201, a reference database 2011, a data retrieval module 2012, an analysis module 2013, a fault storage database 202, a radio frequency module 203, a remote monitoring center server 204, a central processing unit 2041, a display module 2042, an alarm module 205, a mobile terminal 206 and a hydraulic system 3.
Detailed Description
In order to make the technical means, the characteristics, the purposes and the functions of the invention easy to understand, the invention is further described with reference to the specific drawings.
Example 1
As shown in fig. 1, an online monitoring system for a hydraulic system comprises an acquisition system 1 and an analysis monitoring scheduling system 2 which are connected with a hydraulic system 3, wherein the acquisition system 1 and the analysis monitoring scheduling system 2 are connected through wireless or bluetooth to realize data interaction; the acquisition system 1 is used for acquiring data signals at various positions in the hydraulic system 3; the analysis monitoring and dispatching system 2 evaluates the running state of the hydraulic system 3 according to the data signals of all the positions in the hydraulic system 3, which are acquired by the acquisition system 1.
As shown in fig. 2, the acquisition system 1 includes a sensor assembly 101 and a data acquisition module 102, the sensor assembly 101 is connected with the hydraulic system 3; as shown in fig. 3, the analysis monitoring scheduling system 2 includes an operation status monitoring and evaluating module 201, a fault storage database 202, an infinite radio frequency module 203, and a remote monitoring center server 204;
the data acquisition module 102 is configured to receive the monitoring value output by the sensor assembly 101, convert the monitoring value into a digital signal, and send the digital signal to the operating state monitoring and evaluation module 201;
as shown in fig. 4, the operating state monitoring and evaluating module 201 includes a reference database 2011, a data retrieving module 2012 and an analyzing module 2013, the analyzing module 2013 receives a monitoring value sent by the data acquiring module 102 and output by the sensor component 101, and retrieves a standard threshold corresponding to the monitoring value in the reference database 2011 through the data retrieving module 2012, the analyzing module 2013 compares the monitoring value with the standard threshold corresponding to the monitoring value, if the monitoring value is consistent with the standard threshold corresponding to the monitoring value, a no-fault diagnosis monitoring report is automatically generated, and if the monitoring value is inconsistent with the standard threshold corresponding to the monitoring value, a fault risk diagnosis monitoring report is automatically generated; the fault-free monitoring report comprises monitoring time, a corresponding monitoring numerical value and a diagnosis monitoring result description, and the fault risk diagnosis monitoring report comprises the monitoring time, the corresponding monitoring numerical value, a fault position, a fault reason and a fault diagnosis analysis description;
as shown in fig. 5, the remote monitoring center server 204 includes a central processor 2041 and a display module 2042.
The fault storage database 202 is used for storing fault risk diagnosis monitoring reports;
the radio frequency limitless module 203 is configured to receive the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report output by the operating state monitoring and evaluating module 201, and further configured to transmit the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report to the central processing unit 2041.
The central processor 2041 generates a reminding message according to the fault-free diagnosis monitoring report or the fault risk diagnosis monitoring report sent by the infinite radio frequency module 203, and the reminding message is displayed by the display module 2042.
The hydraulic system 3 comprises a hydraulic pump, an electric motor, a hydraulic motor, a filter, a stop valve, a one-way valve, an overflow valve, a restrictor, a servo valve, an electromagnetic valve and an unloading valve; the remote monitoring center server 204 is respectively connected with a hydraulic pump, an electric motor, a hydraulic motor, a filter, a stop valve, a one-way valve, an overflow valve, a restrictor, a servo valve, an electromagnetic valve and an unloading valve.
Wherein, the sensor assembly 101 comprises a first vibration sensor arranged on the hydraulic pump, a first rotating speed sensor arranged on the hydraulic pump, a first noise sensor arranged on the hydraulic pump, a first pressure sensor arranged at the inlet of the hydraulic pump, a second pressure sensor arranged at the outlet of the hydraulic pump, a first current sensor arranged on the electric motor, a second noise sensor arranged on the electric motor, a second rotating speed sensor arranged on the output shaft of the electric motor, a third rotating speed sensor arranged on the hydraulic motor, a third noise sensor arranged on the hydraulic motor, a first temperature sensor arranged on the hydraulic motor, a torque sensor arranged on the hydraulic motor, a differential pressure sensor arranged in the filter, a second temperature sensor arranged in the filter, a third pressure sensor arranged at the outlet of the stop valve, a first current sensor arranged on the electric motor, a second current, A first flow sensor arranged at the outlet of the stop valve, a third temperature sensor arranged at the outlet of the stop valve, a fourth pressure sensor arranged at the outlet of the one-way valve, a second flow sensor arranged at the outlet of the one-way valve, a fourth temperature sensor arranged at the outlet of the one-way valve, a fifth pressure sensor arranged at the outlet of the overflow valve, a third flow sensor arranged at the outlet of the overflow valve, a fifth temperature sensor arranged at the outlet of the overflow valve, a sixth pressure sensor arranged at the outlet of the throttler, a fourth flow sensor arranged at the outlet of the throttler, a sixth temperature sensor arranged at the outlet of the throttler, a seventh pressure sensor arranged at the outlet of the servo valve, a fifth flow sensor arranged at the outlet of the servo valve, a seventh temperature sensor arranged at the outlet of the servo valve, an eighth pressure sensor arranged at the P port of the electromagnetic valve, a, The electromagnetic valve comprises an eighth temperature sensor arranged at the P port of the electromagnetic valve, a ninth pressure sensor arranged at the outlet of the unloading valve, a seventh flow sensor arranged at the outlet of the unloading valve and a ninth temperature sensor arranged at the outlet of the unloading valve.
The first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the fifth temperature sensor, the sixth temperature sensor, the seventh temperature sensor, the eighth temperature sensor and the ninth temperature sensor are all GWSD 100/98;
the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, the fifth pressure sensor, the sixth pressure sensor, the seventh pressure sensor, the eighth pressure sensor and the ninth pressure sensor are all PMP4000 amplification output pressure sensors.
Example 2
As shown in fig. 6, an online monitoring system for a hydraulic system includes an acquisition system 1 and an analysis monitoring scheduling system 2 connected to a hydraulic system 3, where the acquisition system 1 and the analysis monitoring scheduling system 2 are connected wirelessly or via bluetooth to implement data interaction; the acquisition system 1 is used for acquiring data signals at various positions in the hydraulic system 3; the analysis monitoring and dispatching system 2 evaluates the running state of the hydraulic system 3 according to the data signals of all the positions in the hydraulic system 3, which are acquired by the acquisition system 1.
The acquisition system 1 comprises a sensor assembly 101 and a data acquisition module 102, wherein the sensor assembly 101 is connected with the hydraulic system 3; the analysis monitoring scheduling system 2 comprises an operating state monitoring and evaluating module 201, a fault storage database 202, an infinite radio frequency module 203 and a remote monitoring center server 204;
the data acquisition module 102 is configured to receive the monitoring value output by the sensor assembly 101, convert the monitoring value into a digital signal, and send the digital signal to the operating state monitoring and evaluation module 201;
the running state monitoring and evaluating module 201 outputs a fault-free monitoring report or a fault risk diagnosis monitoring report according to the monitoring value; the fault-free monitoring report comprises monitoring time, a corresponding monitoring numerical value and a diagnosis monitoring result description, and the fault risk diagnosis monitoring report comprises the monitoring time, the corresponding monitoring numerical value, a fault position, a fault reason and a fault diagnosis analysis description.
The remote monitoring center server 204 includes a central processor 2041 and a display module 2042.
The fault storage database 202 is used for storing fault risk diagnosis monitoring reports;
the radio frequency limitless module 203 is configured to receive the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report output by the operating state monitoring and evaluating module 201, and further configured to transmit the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report to the central processing unit 2041.
The central processor 2041 generates a reminding message according to the fault-free diagnosis monitoring report or the fault risk diagnosis monitoring report sent by the infinite radio frequency module 203, and the reminding message is displayed by the display module 2042.
The analysis monitoring scheduling system 2 in this embodiment further includes an alarm module 205, and the alarm module 205 is in control connection with the remote monitoring center server 204; the alarm module 205 is a buzzer alarm, the hydraulic pump, the electric motor, the hydraulic motor, the filter, the stop valve, the one-way valve, the overflow valve, the restrictor, the servo valve, the electromagnetic valve and the unloading valve are all provided with the buzzer alarm, and the remote monitoring center server 204 starts the corresponding buzzer alarm according to the fault position in the fault risk diagnosis monitoring report.
The analysis monitoring scheduling system 2 in this embodiment further includes at least one mobile terminal 206 pre-bound to the remote monitoring center server 204, and the central processor 2041 sends the received fault-free diagnosis monitoring report or fault risk diagnosis monitoring report and the reminding information to the at least one mobile terminal 206.
The mobile terminal 206 is one or more of a smart phone, a desktop computer, and a laptop computer.
In conclusion, the invention can feed back the working state of the hydraulic system in real time by collecting the operation parameters of key components in the hydraulic system on line in real time, and can give an alarm in time before a fault occurs or becomes a serious fault, thereby not only ensuring the safe and stable operation of the hydraulic system, but also improving the automation level of monitoring the hydraulic system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The on-line monitoring system of the hydraulic system is characterized by comprising an acquisition system and an analysis monitoring scheduling system which are connected with the hydraulic system, wherein the acquisition system and the analysis monitoring scheduling system are connected through wireless or Bluetooth to realize data interaction;
the acquisition system is used for acquiring data signals at each position in the hydraulic system;
and the analysis monitoring and dispatching system evaluates the running state of the hydraulic system according to the data signals of all the positions in the hydraulic system, which are acquired by the acquisition system.
2. The online monitoring system for the hydraulic system as claimed in claim 1, wherein the acquisition system comprises a sensor assembly and a data acquisition module, the sensor assembly is connected with the hydraulic system; the analysis monitoring scheduling system comprises an operating state monitoring and evaluating module, a fault storage database, an infinite radio frequency module and a remote monitoring center server;
the data acquisition module is used for receiving the monitoring numerical value output by the sensor assembly, converting the monitoring numerical value into a digital signal and then sending the digital signal to the running state monitoring and evaluating module;
the running state monitoring and evaluating module comprises a reference database, a data calling module and an analyzing module, the analyzing module receives a monitoring value output by the sensor assembly and sent by the data acquisition module, a standard threshold corresponding to the monitoring value in the reference database is called through the data calling module, the analyzing module compares the monitoring value with the standard threshold corresponding to the monitoring value, if the monitoring value is consistent with the standard threshold corresponding to the monitoring value, a fault-free diagnosis monitoring report is automatically generated, and if the monitoring value is not consistent with the standard threshold corresponding to the monitoring value, a fault risk diagnosis monitoring report is automatically generated; the fault-free monitoring report comprises monitoring time, a corresponding monitoring numerical value and a diagnosis monitoring result description, and the fault risk diagnosis monitoring report comprises the monitoring time, the corresponding monitoring numerical value, a fault position, a fault reason and a fault diagnosis analysis description;
the remote monitoring center server comprises a central processing unit and a display module;
the fault storage database is used for storing the fault risk diagnosis monitoring report;
the wireless radio frequency module is used for receiving the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report output by the running state monitoring and evaluating module and transmitting the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report to the central processing unit;
the central processing unit generates reminding information according to the fault-free diagnosis monitoring report and the fault risk diagnosis monitoring report which are sent by the infinite radio frequency module, and the reminding information is displayed through the display module.
3. The hydraulic system on-line monitoring system as claimed in claim 2, wherein the hydraulic system comprises a hydraulic pump, an electric motor, a hydraulic motor, a filter, a stop valve, a check valve, an overflow valve, a restrictor, a servo valve, a solenoid valve, an unloading valve; the remote monitoring center server is respectively connected with the hydraulic pump, the electric motor, the hydraulic motor, the filter, the stop valve, the one-way valve, the overflow valve, the throttler, the servo valve, the electromagnetic valve and the unloading valve in a control way.
4. The hydraulic system on-line monitoring system of claim 3, wherein the sensor assembly comprises a first vibration sensor disposed on the hydraulic pump, a first speed sensor disposed on the hydraulic pump, a first noise sensor disposed on the hydraulic pump, a first pressure sensor disposed at an inlet of the hydraulic pump, a second pressure sensor disposed at an outlet of the hydraulic pump, a first current sensor disposed on the electric motor, a second noise sensor disposed on the electric motor, a second speed sensor disposed on an output shaft of the electric motor, a third speed sensor disposed on the hydraulic motor, a third noise sensor disposed on the hydraulic motor, a first temperature sensor disposed on the hydraulic motor, a torque sensor disposed on the hydraulic motor, a first noise sensor disposed on the hydraulic motor, a second noise sensor disposed on the output shaft of the electric motor, a second noise sensor disposed on, The pressure difference sensor is arranged in the filter, the second temperature sensor is arranged in the filter, the third pressure sensor is arranged at the outlet of the stop valve, the first flow sensor is arranged at the outlet of the stop valve, the third temperature sensor is arranged at the outlet of the stop valve, the fourth pressure sensor is arranged at the outlet of the one-way valve, the second flow sensor is arranged at the outlet of the one-way valve, the fourth temperature sensor is arranged at the outlet of the one-way valve, the fifth pressure sensor is arranged at the outlet of the overflow valve, the third flow sensor is arranged at the outlet of the overflow valve, the fifth temperature sensor is arranged at the outlet of the overflow valve, the sixth pressure sensor is arranged at the outlet of the throttler, the fourth flow sensor is arranged at the outlet of the throttler, the sixth temperature sensor is arranged at the outlet of the throttle, The hydraulic control system comprises a seventh pressure sensor arranged at an outlet of the servo valve, a fifth flow sensor arranged at the outlet of the servo valve, a seventh temperature sensor arranged at the outlet of the servo valve, an eighth pressure sensor arranged at a P port of the electromagnetic valve, a sixth flow sensor arranged at the P port of the electromagnetic valve, an eighth temperature sensor arranged at the P port of the electromagnetic valve, a ninth pressure sensor arranged at an outlet of the unloading valve, a seventh flow sensor arranged at an outlet of the unloading valve and a ninth temperature sensor arranged at an outlet of the unloading valve.
5. The online monitoring system for hydraulic system as claimed in claim 4, wherein the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the fifth temperature sensor, the sixth temperature sensor, the seventh temperature sensor, the eighth temperature sensor and the ninth temperature sensor are all GWSD 100/98;
the first pressure sensor, the second pressure sensor, the third pressure sensor, the fourth pressure sensor, the fifth pressure sensor, the sixth pressure sensor, the seventh pressure sensor, the eighth pressure sensor, and the ninth pressure sensor are all PMP4000 amplification output pressure sensors.
6. The hydraulic system on-line monitoring system as claimed in claim 3, wherein said analysis monitoring and scheduling system further comprises an alarm module, said alarm module is in control connection with said remote monitoring center server; the alarm module is a buzzer alarm, the hydraulic pump, the motor, the hydraulic motor, the filter, the stop valve, the one-way valve, the overflow valve, the throttler, the servo valve, the electromagnetic valve and the unloading valve are all provided with the buzzer alarm, and the remote monitoring center server starts the corresponding buzzer alarm according to the fault position in the fault risk diagnosis monitoring report.
7. The online monitoring system of claim 2, wherein the analyzing, monitoring and scheduling system further comprises at least one mobile terminal pre-bound to the central processing unit, and the central processing unit sends the received no-fault diagnosis monitoring report or the received fault risk diagnosis monitoring report and the reminding information generated by the remote monitoring center to the at least one mobile terminal.
8. The online monitoring system for the hydraulic system according to claim 7, wherein the mobile terminal is one or more of a smart phone, a tablet computer and a portable computer.
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