Control system

Abstract

The invention provides a control system. The control system is used for being connected with a delivery pump and controlling a motor of the delivery pump, the control system comprises a control mode switching pin, an operation state pin, a motor module and a state synchronization module, the state synchronization module is connected with the control mode switching pin so as to receive a first signal or a second signal input by the control mode switching pin, and the motor module is connected with the operation state pin. The first signal is used for indicating a motor of the delivery pump to perform start-stop control through a motor module, and the second signal is used for indicating the motor to perform start-stop control through a connected control button; the state synchronization module is connected with the running state pin so as to receive a starting state signal or a stopping state signal fed back by the motor; and when the state synchronization module receives the second signal, the state of the motor recorded in the motor module is adjusted to be matched with the state indicated by the signal received by the running state pin. The reliability of the control system is better.

Description

Technical Field

[0001] This application relates to the field of electronic technology, and more particularly to a control system. Background Technology

[0002] In automated control equipment, the motor of a delivery pump can be controlled by a control system, such as controlling the motor's start and stop. In some applications, in addition to automatic control via a control system, the motor may also be manually controlled locally via external control buttons or other devices. Existing control systems cannot reliably adapt to this manual control situation, leading to a decrease in the reliability of the control system's motor control.

[0003] For example, during compressor operation, a lubricating oil pump is needed to deliver lubricating oil to the compressor for lubrication and heat dissipation, ensuring reliable compressor operation. While existing lubricating oil pump motors can be remotely controlled via a control system, in some practical applications, the lubricating oil pump is also connected to an external control column, using control buttons on the column for start / stop control. When the motor is locally controlled via the control column, subsequent control systems struggle to accurately and reliably control the motor, leading to insufficient reliability of the control system. Summary of the Invention

[0004] To address the aforementioned technical problems, embodiments of this application provide a control system to solve at least one of the problems described above.

[0005] According to a first aspect of the embodiments of this application, a control system is provided. The control system is used to connect to a delivery pump and control the motor of the delivery pump. The control system includes a control mode switching pin, a running status pin, a motor module, and a status synchronization module. The status synchronization module is connected to the control mode switching pin to receive a first signal or a second signal input by the control mode switching pin. The first signal is used to instruct the motor of the delivery pump to be started and stopped by the motor module, and the second signal is used to instruct the motor to be started and stopped by a connected control button. The status synchronization module is connected to the running status pin to receive a start status signal or a stop status signal fed back by the motor. When the status synchronization module receives the second signal, it adjusts the state of the motor recorded in the motor module to match the state indicated by the signal received by the running status pin.

[0006] By adding a status synchronization module to the control system, the motor status indicated by the motor feedback signal is synchronized to the motor module. This ensures that the motor status recorded in the motor module can be synchronized and updated regardless of whether the motor is automatically controlled by the control system or controlled by the control button. This ensures the accuracy of the motor status recorded by the motor module, and in turn, ensures that the subsequent motor module can accurately and reliably control the motor.

[0007] Optionally, the motor module includes a manual start pin, and the state synchronization module includes a start synchronization branch. The start synchronization branch includes a first AND gate, the first input of which is connected to the control mode switching pin, the second input of which is connected to the running state pin, and the output of which is connected to the manual start pin of the motor module. When the control mode switching pin receives a second signal and the running state pin receives a start state signal, the output of the first AND gate triggers the manual start pin, so that the motor state recorded in the motor module is adjusted to the manual start state.

[0008] By using the first AND gate of the start-up synchronization branch to process the signals input to the control mode switching pin and the running status pin, the manual start pin in the motor module can be accurately triggered when the motor is manually started, thereby adjusting the state of the motor in the motor module to the manual start state, realizing automatic synchronization and accurate update of the state.

[0009] Optionally, the startup synchronization branch further includes a first delay unit, which is connected between the running state pin and the second input of the first AND gate. The first delay unit is used to output a high-level pulse signal to the second input of the first AND gate when the duration of the startup state signal input on the running state pin meets a first threshold.

[0010] The first delay unit can prevent the pins in the motor module from being accidentally triggered due to electromagnetic interference or errors, thus ensuring accuracy.

[0011] Optionally, an inverter is provided between the first input terminal of the first AND gate and the control mode switching pin. The control system also includes a remote control pin, and the start synchronization branch includes a second AND gate and a first OR gate. The first input terminal of the second AND gate is connected to the remote control pin to receive a start trigger signal for instructing the start motor. The second input terminal of the second AND gate is connected to the control mode switching pin. The output terminal of the second AND gate is connected to the first input terminal of the first OR gate. The second input terminal of the first OR gate is connected to the output terminal of the first AND gate. The output terminal of the first OR gate is connected to the manual start pin. When the remote control pin inputs a start trigger signal and the control mode switching pin inputs a first signal, the second AND gate outputs a high level to the first input terminal of the first OR gate, the first AND gate outputs a low level to the second input terminal of the first OR gate, and the output terminal of the first OR gate triggers the manual start pin to adjust the state of the delivery pump recorded in the motor module to the manual start state.

[0012] In the case where the control system includes a remote control pin, the start synchronization branch is equipped with a second AND gate and a first OR gate, which are used to process the signals of the remote control pin, the control mode switching pin, and the first AND gate, thereby ensuring accurate triggering of the manual start pin of the motor module.

[0013] Optionally, the motor module includes a manual stop pin, and the state synchronization module also includes a stop synchronization branch, which includes a stop delay unit. The input of the stop delay unit is connected to the running state pin through an inverter, and the output of the stop delay unit is connected to the manual stop pin. When the running state pin inputs a stop state signal, the stop delay unit triggers the manual stop pin to adjust the motor state recorded in the motor module to the manual stop state.

[0014] The stop synchronization branch can receive signals from the motor and, when the delay time is met, trigger the motor module to adjust the recorded motor state to the manual stop state. This ensures that when the motor is manually stopped via the control button, the motor module can accurately synchronize the motor state to the stop state.

[0015] Optionally, the control system further includes a remote stop pin, and the stop synchronization branch further includes a first NOT gate and a second OR gate. The input of the first NOT gate is connected to the remote stop pin, the output of the first NOT gate is connected to the first input of the second OR gate, the second input of the second OR gate is connected to the output of the stop delay unit, and the output of the second OR gate is connected to the manual stop pin. When the remote stop pin outputs a remote stop signal, the output of the first NOT gate outputs a high level, and the output of the second OR gate triggers the manual stop pin to adjust the motor state recorded in the motor module to the manual stop state, and outputs a stop command to the motor to switch the motor to the stop state.

[0016] To ensure compatibility with the signals from the remote stop pin of the control system, the stop synchronization branch is equipped with a first NOT gate and a second OR gate. These gates process the signals from the remote stop pin, the stop delay unit, and other components, thereby ensuring that the motor module can accurately record the motor's status.

[0017] Optionally, the motor module further includes an automatic start pin, and the control system further includes a test pin, a first pressure information pin, and a standby delivery pump status pin. The status synchronization module further includes a standby start branch, which includes a third AND gate and a fourth AND gate. The first input of the third AND gate is connected to the first pressure information pin via an inverter, the second input of the third AND gate is connected to the standby delivery pump status pin, the output of the third AND gate is connected to the first input of the fourth AND gate, the second input of the fourth AND gate is connected to the remote stop pin via an inverter and a first NOT gate, and the third input of the fourth AND gate is connected to the test pin. When the first pressure information pin inputs a pressure abnormality signal, the standby delivery pump status pin inputs a standby delivery pump available signal, the test pin inputs a test start signal, and the remote stop pin is not triggered, the output of the fourth AND gate triggers the automatic start pin, so that the motor module outputs a signal to start the standby delivery pump and adjusts the recorded motor status to the automatic start state.

[0018] The backup start branch of the status synchronization module can trigger the motor module to output a signal to start the backup pump when the test pin is triggered and no remote stop signal is received, in the case of abnormal pressure and availability of the backup delivery pump, thus ensuring operational safety.

[0019] Optionally, the delivery pump is connected to the target object to deliver the medium to the target object. The motor module also includes an automatic stop pin. The control system also includes a delivery pump abnormality detection branch, a target object status pin, and a fifth AND gate. The first input of the fifth AND gate is connected to the delivery pump abnormality detection branch through an inverter, the second input of the fifth AND gate is connected to the target object status pin through an inverter, and the output of the fifth AND gate is connected to the automatic stop pin. When the delivery pump abnormality detection branch outputs an abnormal signal and the target object status pin inputs a target object stop signal, the fifth AND gate triggers the automatic stop pin, so that the motor module updates the motor status to the automatic stop state and outputs a stop command to the motor, so that the motor switches to the stop state.

[0020] Optionally, when the target object status pin inputs the target object running signal, the abnormal detection branch of the delivery pump outputs an abnormal signal or a normal signal, and the output of the fifth AND gate outputs a low level to the automatic stop pin.

[0021] Optionally, a second delay unit is provided between the target object status pin and the inverter of the second input terminal of the fifth AND gate. The second delay unit outputs a low level when the duration of the target object stop signal input to the target object status pin meets the second threshold.

[0022] In the control system of this application embodiment, the motor module is used to record the state of the motor of the delivery pump and control it. This control system adds a state synchronization module, which is connected to the control mode switching pin and the running state pin, and processes the signals from these pins. For example, when the control mode signal input to the control mode switching pin is the second signal, it indicates that the motor is controlled by the control button. At this time, the state synchronization module can synchronize the signal input to the running state pin to the motor module, thereby enabling the synchronization of the motor status information fed back from the running state pin to the motor module even when the motor is not controlled by the motor module.

[0023] For example, when the control mode switching pin receives the second signal (i.e., low level, logic 0), it indicates that the motor of the current delivery pump is in the state of being controlled by the local control button. At this time, the status synchronization module updates the status recorded in the motor module to be consistent with the motor status input by the running status pin. This ensures that when the motor of the delivery pump is controlled by the local control button, the motor status can also be synchronized to the motor module in the control system, thereby ensuring that the subsequent motor module can accurately control the motor. Attached Figure Description

[0024] Figure 1 This is a logic diagram of signal processing for a first type of control system provided in an embodiment of this application;

[0025] Figure 2 This is a schematic diagram of a second type of control system provided in an embodiment of this application.

[0026] List of reference numerals in the attached diagram:

[0027] 11. Control Mode Switching Pin; 12. Running Status Pin; 13. Remote Control Pin; 14. Remote Stop Pin; 15. Test Pin; 161. First Pressure Information Pin; 162. Standby Transfer Pump Status Pin; 17. Error Information Pin; 181. Transfer Pump Fan Status Pin; 182. Second Liquid Level Information Pin; 183. Gas Sensor Pin; 19. Target Object Status Pin; 20. Motor Module; 21. Manual Start Pin; 22. Manual Stop Pin; 23. Automatic Start Pin; 24. Automatic Stop Pin; 25. 16. Lock pin; 27. Feedback pin; 28. Error pin; 29. ​​Reset pin; 20. Mode pin; 311. First AND gate; 312. First delay unit; 313. Second AND gate; 314. First OR gate; 321. Stop delay unit; 322. First NOT gate; 323. Second OR gate; 341. Fifth AND gate; 331. Third AND gate; 332. Fourth AND gate; 342. Second delay unit; 351. Sixth AND gate; 41. Stop pulse signal; 42. Start pulse signal; 43. Error signal; 44. Running signal. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0029] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0030] The control system in this application can be applied to the lubricating oil pump and compressor system mentioned in the background art, or to other systems of target objects connected to the delivery pump, to deliver a medium (such as any suitable liquid or gaseous medium) to the target object via the delivery pump, without limitation.

[0031] In the aforementioned example of a transfer pump used in conjunction with a compressor, the pump's motor is connected to a control circuit (MCC). The control system is a computing device configured with control logic. The control system can connect to the control circuit and send different signals to it to control the motor. The control system can provide a user-friendly interface through which the user can input control commands (such as start, stop, etc.). Of course, in other examples, the control system can also directly control the pump's motor; there are no limitations on this.

[0032] Reference Figure 1 The diagram illustrates the logic of a control system according to an embodiment of this application. This control system is connected to a delivery pump and controls the pump's motor. The control system includes a control mode switching pin 11, a running status pin 12, a motor module 20, and a status synchronization module. The status synchronization module is connected to the control mode switching pin 11 to receive a first signal or a second signal input from the control mode switching pin 11. The first signal instructs the delivery pump's motor to start and stop via the motor module 20, and the second signal instructs the motor to start and stop via a connected control button. The status synchronization module is connected to the running status pin 12 to receive a start status signal or a stop status signal from the motor. When the status synchronization module receives the second signal, it adjusts the motor status recorded in the motor module 20 to match the status indicated by the signal received by the running status pin 12.

[0033] In this embodiment, the motor module 20 of the control system is used to record the state of the motor of the delivery pump and control it. The control system adds a state synchronization module, which is connected to the control mode switching pin and the running state pin. The state synchronization module processes the signals from the control mode switching pin 11 and the running state pin 12. For example, when the control mode signal input to the control mode switching pin 11 is the second signal, it indicates that the motor is controlled by the control button. At this time, the state synchronization module can synchronize the signal input from the running state pin to the motor module, so that even when the motor is not controlled by the motor module, the state information of the delivery pump motor feedback obtained from the running state pin can be synchronized to the motor module.

[0034] For example, when the control mode switching pin 11 receives the second signal (i.e., low level, logic 0), indicating that the motor of the delivery pump is currently controlled by the local control button, the status synchronization module updates the status recorded in the motor module 20 to match the motor status input by the running status pin 12. This ensures that when the motor of the delivery pump is controlled by the local control button, the motor status can also be synchronized to the motor module 20 in the control system, thereby ensuring that the motor module 20 can accurately control the motor subsequently.

[0035] like Figure 1 and Figure 2 As shown, to facilitate understanding, before providing a detailed explanation of the synchronization process, a brief description of the pins included in the control system and motor module 20 will be given first. In addition to the aforementioned control mode switching pin 11 and running status pin 12, the control system also includes a remote control pin 13, a remote stop pin 14, a test pin 15, a first pressure information pin 161, a standby delivery pump status pin 162, an error information pin 17, a delivery pump fan status pin 181, a second liquid level information pin 182, a gas sensor pin 183, and a target object status pin 19.

[0036] Regarding the control mode switching pin 11, when the motor of the delivery pump is controlled by the locally connected control button, the control mode switching pin 11 receives the second signal (i.e., low level, logic 0). When the motor of the delivery pump is switched to remote control using the control system, the control mode switching pin 11 receives the first signal (i.e., high level, logic 1).

[0037] The running status pin 12 is used to receive the motor status of the delivery pump fed back by the delivery pump. When the motor is in the start state, the running status pin 12 receives the start status signal (i.e., high level, logic 1). When the motor is in the stop state, the running status pin 12 receives the stop status signal (i.e., low level, logic 0).

[0038] The remote control pin 13 is used to receive commands issued by the user through the interface of the control system. For example, if a command to start the delivery pump is issued through the interface, the pin will receive a high level (i.e., logic 1). Otherwise, if no command to start the delivery pump is received, the pin will be at a low level (i.e., logic 0).

[0039] The remote stop pin 14 is used to receive commands issued by the user through the control system interface. For example, if a command to stop the output pump is issued through the interface, the pin will receive a low level (i.e., logic 0). Conversely, if no command to stop the delivery pump is received, the pin will be at a high level (i.e., logic 1).

[0040] Test pin 15 is used to receive a test start signal. For example, when the user sends a test command through the test button in the control system interface, test pin 15 receives a test start signal (i.e., high level, logic 1).

[0041] The first pressure information pin 161 is used to receive the downstream pressure signal of the filter in the pipeline connected to the delivery pump, which is also the outlet pressure signal of the oil station. When the pressure is normal, the first pressure information pin 161 receives a normal pressure signal (i.e., high level, logic 1). When an abnormal pressure is detected, it outputs a pressure abnormal signal (i.e., low level, logic 0).

[0042] The standby delivery pump status pin 162 is used to receive the status of the standby delivery pump. When the standby delivery pump is available (i.e., the standby delivery pump is not started), this pin receives the standby delivery pump available signal (i.e., high level, logic 1).

[0043] Error message pin 17 This pin is used to receive error signals sent by the control circuit of the delivery pump and / or other sensors. When an error signal is received, this pin is at a low level (i.e., logic 0).

[0044] The fan status pin 181 of the delivery pump is used to receive the signal feedback from the sensor of the fan of the delivery pump. When the fan is normal, this pin receives the fan normal signal (i.e., high level, logic 1).

[0045] The second liquid level information pin 182 is used to receive the signal fed back by the second liquid level sensor. When the liquid level is normal, this pin receives a high level (i.e., logic 1).

[0046] The gas sensor pin 183 is used to receive the signal fed back by the gas sensor. When the detection is normal, this pin receives a high level (i.e., logic 1).

[0047] The target object status pin 19 is used to receive the operating status of the compressor. When the compressor is in the start state, this pin receives the target object running signal (i.e., high level, logic 1). When the compressor is in the stop state, this pin receives the target object stop signal (i.e., low level, logic 0).

[0048] The motor module 20 includes a manual start pin 21, a manual stop pin 22, an automatic start pin 23, an automatic stop pin 24, a lock pin 25, a feedback pin 26, an error reporting pin 27, a reset pin 28, and a mode pin 29.

[0049] When the manual start pin 21 receives a high level (i.e., logic 1), it is triggered, which in turn causes the motor module 20 to output a start pulse signal 42 (on pulse, i.e., logic 1).

[0050] When the manual stop pin 22 receives a high level, it is triggered, which in turn causes the motor module 20 to output a stop pulse signal 41 (off pulse, i.e., logic 0).

[0051] When the automatic start pin 23 receives a high level, it is triggered, which in turn causes the motor module 20 to output a start pulse signal 42 (on pulse, i.e. logic 1).

[0052] When the automatic stop pin 24 receives a high level, it is triggered, which in turn causes the motor module 20 to output a stop pulse signal 41 (off pulse, i.e. logic 0).

[0053] When the lock pin 25 receives a high level, it is triggered, which in turn locks the motor of the delivery pump in the motor module 20, thereby preventing accidental start-up.

[0054] Feedback pin 26 is used to receive feedback information, and the signal input to the running status pin 12 can be directly transmitted to this pin.

[0055] Error pin 27 is used to receive error signals. A NOT gate is set between error pin 27 and error information pin 17. That is, when error information pin 17 receives a high level (i.e., logic 1), the input of error pin 27 is low (i.e., logic 0). When error information pin 17 receives a low level, the input of error pin 27 is high. When error pin 27 is triggered, motor module 20 outputs error signal 43 (com err).

[0056] The reset pin 28 is used to reset the motor module 20. The reset is triggered when the reset pin 28 receives a high level.

[0057] Mode pin 29 is used to switch modes. Normally, mode pin 29 is connected to a low level (i.e., logic 0).

[0058] In addition, the motor module 20 can also output a running signal 44 (mot run).

[0059] The working process of this control system is explained below with reference to the accompanying drawings:

[0060] Reference Figure 1 and Figure 2 The state synchronization module includes a start synchronization branch, which includes a first AND gate 311. The first input of the first AND gate 311 is connected to the control mode switching pin 11, the second input of the first AND gate 311 is connected to the running status pin 12, and the output of the first AND gate 311 is connected to the manual start pin 21 of the motor module 20. When the control mode switching pin 11 receives a second signal and the running status pin 12 receives a start status signal, the output of the first AND gate 311 triggers the manual start pin 21 to adjust the motor status recorded in the motor module 20 to the manual start state.

[0061] For example, when the control mode switching pin 11 receives a second signal, it indicates that the user is not using the control system but is using the control buttons for local control. At this time, if the running status pin 12 inputs a start status signal (high level, logic 1) to the second input of the first AND gate 311, the first AND gate 311 outputs a high level, thereby triggering the manual start pin 21 of the motor module 20, so that the motor status recorded in the motor module 20 is adjusted to the manual start state.

[0062] Optionally, the startup synchronization branch further includes a first delay unit 312, which is connected between the running state pin 12 and the second input terminal of the first AND gate 311. The first delay unit 312 is used to output a high-level pulse signal to the second input terminal of the first AND gate 311 when the duration of the startup state signal input to the running state pin 12 meets a first threshold.

[0063] In this embodiment, the first delay unit 312 includes a first state delay unit and a first pulse delay unit. When the motor of the delivery pump switches from a stopped state to a started state, the signal of the running state pin 12 switches from a low level to a high level, and the signal input to the first state delay unit also switches from a low level to a high level. At this time, the output of the first state delay unit does not immediately switch to a high level. Instead, the output of the first state delay unit will only become high level when the duration of its input high level is greater than or equal to a first threshold (which can be determined as needed, such as 30 seconds, 1 minute, 2 minutes, etc.), thereby triggering the first pulse delay unit to output a high-level pulse signal. This effectively ensures that the state in the motor module 20 is updated only after the motor switches to a stable started state.

[0064] Optionally, an inverter is provided between the first input terminal of the first AND gate 311 and the control mode switching pin 11. The control system also includes a remote control pin 13, and the start synchronization branch further includes a second AND gate 313 and a first OR gate 314. The first input terminal of the second AND gate 313 is connected to the remote control pin 13 to receive a start trigger signal for instructing the starter motor. The second input terminal of the second AND gate 313 is connected to the control mode switching pin 11. The output terminal of the second AND gate 313 is connected to the first input terminal of the first OR gate 314. The second input terminal is connected to the output terminal of the first AND gate 311, and the output terminal of the first OR gate 314 is connected to the manual start pin 21. When the remote control pin 13 inputs a start trigger signal and the control mode switching pin 11 inputs a first signal, the second AND gate 313 outputs a high level to the first input terminal of the first OR gate 314, the first AND gate 311 outputs a low level to the second input terminal of the first OR gate 314, and the output terminal of the first OR gate 314 triggers the manual start pin 21 so that the state of the delivery pump recorded in the motor module 20 is adjusted to the manual start state.

[0065] In this embodiment, in order to ensure reliable control and status updates through both the control system and the control buttons, the start synchronization branch also includes a second AND gate 313 and a first OR gate 314.

[0066] When the remote control pin 13 receives a high level (i.e., logic 1), it indicates that the user is controlling the start of the delivery pump motor through the control system. The first input of the second AND gate 313 receives a high level. At this time, if the control mode switching pin 11 receives the first signal (i.e., high level, logic 1, indicating control through the control system), the second AND gate outputs a high level (i.e., logic 1). In this case, regardless of the signal input to the running status pin 12, the first OR gate 314 outputs a high level to the motor module 20, triggering the manual start pin 21. The status of the delivery pump recorded in the motor module 20 is adjusted to the manual start state, and the motor module 20 outputs a start pulse signal 42.

[0067] Optionally, such as Figure 1 As shown, in order to synchronize the state recorded in the motor module 20 to the stop state when the motor of the delivery pump is in the stop state, the state synchronization module also includes a stop synchronization branch. The stop synchronization branch includes a stop delay unit 321. The input terminal of the stop delay unit 321 is connected to the running state pin 12 through an inverter, and the output terminal of the stop delay unit 321 is connected to the manual stop pin 22.

[0068] When a stop status signal is input to the running status pin 12, the stop delay unit 321 triggers the manual stop pin 22 to adjust the motor status recorded in the motor module 20 to the manual stop state.

[0069] For example, when the motor of the delivery pump is in a stopped state, it inputs a stop state signal (i.e., low level, logic 0) to the running state pin. Because the input of the stop delay unit 321 is connected to the running state pin 12 through an inverter, the input of the stop delay unit 321 is high level (i.e., logic 1). The stop delay unit 321 is triggered and outputs a high level pulse signal to the manual stop pin 22 of the motor module 20, thereby triggering it. The motor module 20 adjusts the recorded motor state to the manual stop state (man off).

[0070] Optionally, to ensure that the motor module 20 can correctly record the motor status of the delivery pump when the motor of the delivery pump is started or stopped by the control system, the control system also includes a remote stop pin 14. The stop synchronization branch also includes a first NOT gate 322 and a second OR gate 323. The input of the first NOT gate 322 is connected to the remote stop pin 14, the output of the first NOT gate 322 is connected to the first input of the second OR gate 323, the second input of the second OR gate 323 is connected to the output of the stop delay unit 321, and the output of the second OR gate 323 is connected to the manual stop pin 22.

[0071] When the remote stop pin 14 outputs a remote stop signal, the output of the first NOT gate 322 outputs a high level, and the output of the second OR gate 323 triggers the manual stop pin 22, so that the motor state recorded in the motor module 20 is adjusted to the manual stop state, and a stop command is output to the motor to switch the motor to the stop state.

[0072] For example, such as Figure 2 As shown, the user can send a stop command through the stop button on the interface provided by the control system. When the remote stop pin 14 receives a low level (i.e., logic 0), it outputs a high level (i.e., logic 1) after passing through the first NOT gate 322. This high level is input to the first input terminal of the second OR gate 323. Since one of the first and second input terminals of the second OR gate 323 is high, its output terminal will also output a high level. Therefore, in this case, regardless of whether the second input terminal is high or low, the output terminal of the second OR gate 323 will output a high level, thereby triggering the manual stop pin 22 connected to the output terminal of the second OR gate 323. This adjusts the motor state recorded in the motor module 20 to the manual stop state (manoff) and outputs a stop command to the motor, causing the motor to switch to the stop state.

[0073] Optionally, when the motor of the delivery pump is started by the control system, the automatic start pin 23 (auto on) of the motor module 20 can be triggered. For this purpose, as mentioned above, the control system also includes a test pin 15, a first pressure information pin 161, and a standby delivery pump status pin 162. The status synchronization module also includes a standby start branch, which can trigger the automatic start pin 23 in response to a command input by the user through the test button on the interface provided by the control system.

[0074] In this embodiment, the backup start-up branch includes a third AND gate 331 and a fourth AND gate 332. The first input of the third AND gate 331 is connected to the first pressure information pin 161 through an inverter. The second input of the third AND gate 331 is connected to the backup delivery pump status pin 162. The output of the third AND gate 331 is connected to the first input of the fourth AND gate 332. The second input of the fourth AND gate 332 is connected to the remote stop pin 14 through an inverter and a first NOT gate 322. The third input of the fourth AND gate 332 is connected to the test pin 15.

[0075] When the first pressure information pin 161 inputs a pressure abnormality signal, the standby delivery pump status pin 162 inputs a standby delivery pump availability signal, the test pin 15 inputs a test start signal, and the remote stop pin 14 is not triggered, the output of the fourth AND gate 332 triggers the automatic start pin 23, so that the motor module 20 outputs a signal to start the standby delivery pump and adjusts the recorded motor status to the automatic start state.

[0076] As before, the first pressure information pin 161 can receive the pressure signal at the outlet of the lubricating oil delivery circuit. When the pressure is detected to be normal, the first pressure information pin 161 receives the normal pressure signal (i.e., high level, logic 1), which indicates that the current delivery pump is normal and there is no need to switch the delivery pump.

[0077] When the first pressure information pin 161 receives a pressure abnormality signal (i.e., low level, logic 0), because it is transmitted to the first input of the third AND gate 331 through the inverter, the first input of the third AND gate 331 is at a high level (i.e., logic 1). The standby delivery pump status pin 162 receives the signal from the standby delivery pump. If the standby delivery pump is in a stopped state, this pin inputs a high level (i.e., logic 1), and this signal is the standby delivery pump available signal. In this state, both the first and second inputs of the third AND gate 331 input a high level, so its output outputs a high level to the first input of the fourth AND gate 332.

[0078] In this example, the second input of the fourth AND gate 332 is connected to the remote stop pin 14 via an inverter, a first NOT gate 322, and a timer. When the user sends a stop command via the stop button on the interface provided by the control system, the pin receives a low level (i.e., logic 0). Conversely, if the user does not trigger a stop command, the pin receives a high level (i.e., logic 1). This high level is output as a low level after passing through the first NOT gate 322. The timer delays for a certain period of time (e.g., 2 seconds) and then outputs a low-level pulse signal. This low-level pulse signal is converted into a high-level pulse signal by the inverter and input to the second input of the fourth AND gate 332.

[0079] The third input of the fourth AND gate 332 is connected to test pin 15. When the user triggers the test command through the test button in the control system interface, test pin 15 receives a high level (i.e., logic 1), and conversely, it receives a low level (i.e., logic 0). When test pin 15 receives a high level, this high level is input to the third input of the fourth AND gate 332, making all three inputs of the fourth AND gate 332 high, thus its output is high, thereby triggering the automatic start pin 23.

[0080] In short, by using the backup start branch to detect abnormal pressure at the oil outlet of the currently used delivery pump, and if the backup delivery pump is available, the user can start the backup delivery pump by pressing the test button, and the motor module 20 will output a signal to start the backup delivery pump, and the recorded motor (which is the motor of the backup delivery pump) will be adjusted to the automatic start state.

[0081] Optionally, in order to respond to abnormalities in the delivery pump and automatically stop the delivery pump when an abnormality occurs, the control system also includes a delivery pump abnormality detection branch, a target object status pin 19, and a fifth AND gate 341. The first input of the fifth AND gate 341 is connected to the delivery pump abnormality detection branch through an inverter, the second input of the fifth AND gate 341 is connected to the target object status pin 19 through an inverter, and the output of the fifth AND gate 341 is connected to the automatic stop pin 24.

[0082] When the abnormal detection branch of the delivery pump outputs an abnormal signal and the target object status pin 19 inputs a target object stop signal, the fifth AND gate 341 triggers the automatic stop pin 24, so that the motor module 20 updates the motor status to the automatic stop state and outputs a stop command to the motor, so that the motor switches to the stop state.

[0083] like Figure 2As shown in the example of this application, the abnormal detection branch of the delivery pump includes a delivery pump fan status pin 181, a second liquid level information pin 182, a gas sensor pin 183, and a sixth AND gate 351. The first input of the sixth AND gate 351 is connected to the delivery pump fan status pin 181, the second input of the sixth AND gate 351 is connected to the second liquid level information pin 182, the third input of the sixth AND gate 351 is connected to the gas sensor pin 183, and the output of the sixth AND gate 351 serves as the output of the abnormal detection branch of the delivery pump, which is connected to the first input of the fifth AND gate 341 through an inverter.

[0084] When at least one of the following pins—pump fan status pin 181, second liquid level information pin 182, and gas sensor pin 183—detects an anomaly, at least one input of the sixth AND gate 351 receives a low level (logo 0), and its output outputs an anomaly signal (low level, logic 0). After passing through an inverter, the first input of the fifth AND gate 341 receives a high level. In this case, if the target object status pin 19 receives a target object stop signal (low level, logic 0, indicating that the target object, such as the compressor, is not running), the second input of the fifth AND gate 341 receives a high level. At this time, both inputs of the fifth AND gate 341 are high, and its output is high, triggering the automatic stop pin 24 (auto off) of the motor module 20, thereby stopping the pump motor. At this time, the start pulse automatically switches to the ready state so that the motor module 20 can be correctly controlled according to the accurate status.

[0085] Optionally, the fifth AND gate 341 can also be connected to the locking pin 25 of the motor module 20. When it outputs a high level, it not only triggers the automatic stop pin 24, but also triggers the locking pin 25 to prevent the motor of the delivery pump from being accidentally started before the fault is cleared.

[0086] Optionally, the above-mentioned abnormal detection branch of the delivery pump can automatically stop the pump system when an abnormality is detected when the target object is not running. In order to ensure the safety of the target object during operation, when the target object status pin 19 inputs the target object running signal, the abnormal detection branch of the delivery pump outputs an abnormal signal or a normal signal, and the output of the fifth AND gate 341 outputs a low level to the automatic stop pin 24.

[0087] For example, when the target object is in the start-up state, the target object status pin 19 receives the target object running signal (which is high, i.e., logic 1). This signal is inverted to a low level (i.e., logic 0) and input to the second input of the fifth AND gate 341. In this case, regardless of the signal input to the first input of the fifth AND gate 341 (i.e., whether the abnormal signal or normal signal is output by the abnormal detection branch of the delivery pump), the output of the fifth AND gate 341 is always low, thus preventing the delivery pump motor from stopping. This prioritizes the supply of lubricating oil during the operation of the target object, meaning that the delivery pump motor is not stopped when the target object is in the start-up state, thus prioritizing the safety of the target object's operation.

[0088] Optionally, to improve the reliability of control, a second delay unit 342 is provided between the target object status pin 19 and the inverter of the second input terminal of the fifth AND gate 341. The second delay unit 342 outputs a low level when the duration of the target object stop signal input to the target object status pin 19 meets the second threshold.

[0089] The second threshold can be determined as needed, such as 1 minute, 5 minutes, or 10 minutes. For example, when the target object switches from the stopped state to the started state, the signal received by the target object status pin 19 switches from low level to high level. The second delay unit 342 receives the high level, but it does not output a high level immediately. Instead, when the duration of the high level input by the second delay unit 342 reaches the second threshold (such as 10 minutes), it outputs a high level. This high level is then converted to a low level by an inverter and sent to the second input of the fifth AND gate 341. The output of the fifth AND gate 341 outputs a low level, thereby ensuring that the motor of the delivery pump will not be automatically switched to the stopped state when the target object is in the started state, thus prioritizing the safe operation of the target object.

[0090] In summary, this control system allows for free switching between control methods for the delivery pump motor. It can flexibly choose between control via the control system itself or control via buttons on the field control panel, improving operational flexibility. It can synchronize and track the on-site operating signals of the delivery pump motor, preventing erroneous outputs from the motor module due to signal asynchrony and enhancing safety. When the delivery pump motor malfunctions, it can automatically shut down and switch to backup equipment, improving reliability.

[0091] It should be noted that not all steps and modules in the above processes and system structure diagrams are mandatory; some steps or modules can be omitted as needed. The execution order of each step is not fixed and can be adjusted as required. The system structure described in the above embodiments can be a physical structure or a logical structure. That is, some modules may be implemented by the same physical entity, or some modules may be implemented by multiple physical entities, or they may be jointly implemented by certain components in multiple independent devices.

[0092] In the above embodiments, the hardware modules can be implemented mechanically or electrically. For example, a hardware module may include permanent, dedicated circuitry or logic (such as a dedicated processor, FPGA, or ASIC) to perform the corresponding operations. The hardware module may also include programmable logic or circuitry (such as a general-purpose processor or other programmable processor), which can be temporarily configured by software to perform the corresponding operations. The specific implementation method (mechanical, dedicated, permanent circuitry, or temporarily configured circuitry) can be determined based on cost and time considerations.

[0093] The present application has been shown and described in detail above with reference to the accompanying drawings and preferred embodiments. However, the present application is not limited to these disclosed embodiments. Based on the above multiple embodiments, those skilled in the art will know that more embodiments of the present application can be obtained by combining the code review methods in the different embodiments above. These embodiments are also within the protection scope of the present application.

Claims

1. A control system, characterized in that, The control system is used to connect to the delivery pump and control the motor of the delivery pump. The control system includes a control mode switching pin (11), a running status pin (12), a motor module (20), and a status synchronization module. The state synchronization module is connected to the control mode switching pin (11) to receive a first signal or a second signal input by the control mode switching pin (11). The first signal is used to instruct the motor of the delivery pump to start and stop through the motor module (20), and the second signal is used to instruct the motor to start and stop through the connected control button. The state synchronization module is connected to the running state pin (12) to receive the start state signal or stop state signal fed back by the motor; When the state synchronization module receives the second signal, it adjusts the state of the motor recorded in the motor module (20) to match the state indicated by the signal received by the running state pin (12).

2. The control system according to claim 1, characterized in that, The motor module (20) includes a manual start pin (21), the state synchronization module includes a start synchronization branch, the start synchronization branch includes a first AND gate (311), the first input terminal of the first AND gate (311) is connected to the control mode switching pin (11), the second input terminal of the first AND gate (311) is connected to the running state pin (12), and the output terminal of the first AND gate (311) is connected to the manual start pin (21) of the motor module (20); When the control mode switching pin (11) receives the second signal and the running status pin (12) receives the start status signal, the output of the first AND gate (311) triggers the manual start pin (21) so that the motor status recorded in the motor module (20) is adjusted to the manual start status.

3. The control system according to claim 2, characterized in that, The startup synchronization branch also includes a first delay unit (312), which is connected between the running state pin (12) and the second input terminal of the first AND gate (311). The first delay unit (312) is used to output a high-level pulse signal to the second input terminal of the first AND gate (311) when the duration of the startup state signal input to the running state pin (12) meets the first threshold.

4. The control system according to claim 2 or 3, characterized in that, An inverter is provided between the first input terminal of the first AND gate (311) and the control mode switching pin (11). The control system also includes a remote control pin (13). The start synchronization branch also includes a second AND gate (313) and a first OR gate (314). The first input terminal of the second AND gate (313) is connected to the remote control pin (13) to receive a start trigger signal for instructing the motor to start. The second input terminal of the second AND gate (313) is connected to the control mode switching pin (11). The output terminal of the second AND gate (313) is connected to the first input terminal of the first OR gate (314). The second input terminal of the first OR gate (314) is connected to the output terminal of the first AND gate (311). The output terminal of the first OR gate (314) is connected to the manual start pin (21). When the remote control pin (13) inputs the start trigger signal and the control mode switching pin (11) inputs the first signal, the second AND gate (313) outputs a high level to the first input terminal of the first OR gate (314), the first AND gate (311) outputs a low level to the second input terminal of the first OR gate (314), and the output terminal of the first OR gate (314) triggers the manual start pin (21) so that the state of the delivery pump recorded in the motor module (20) is adjusted to the manual start state.

5. The control system according to claim 1, characterized in that, The motor module (20) includes a manual stop pin (22), and the state synchronization module also includes a stop synchronization branch. The stop synchronization branch includes a stop delay unit (321). The input terminal of the stop delay unit (321) is connected to the running state pin (12) through an inverter, and the output terminal of the stop delay unit (321) is connected to the manual stop pin (22). When the running status pin (12) inputs a stop status signal, the stop delay unit (321) triggers the manual stop pin (22) so that the status of the motor recorded in the motor module (20) is adjusted to the manual stop state.

6. The control system according to claim 5, characterized in that, The control system further includes a remote stop pin (14), and the stop synchronization branch further includes a first NOT gate (322) and a second OR gate (323). The input terminal of the first NOT gate (322) is connected to the remote stop pin (14), the output terminal of the first NOT gate (322) is connected to the first input terminal of the second OR gate (323), the second input terminal of the second OR gate (323) is connected to the output terminal of the stop delay unit (321), and the output terminal of the second OR gate (323) is connected to the manual stop pin (22). When the remote stop pin (14) outputs a remote stop signal, the output of the first NOT gate (322) outputs a high level, and the output of the second OR gate (323) triggers the manual stop pin (22) so that the state of the motor recorded in the motor module (20) is adjusted to the manual stop state, and a stop command is output to the motor so that the motor switches to the stop state.

7. The control system according to claim 6, characterized in that, The motor module (20) also includes an automatic start pin (23), and the control system also includes a test pin (15), a first pressure information pin (161), and a standby delivery pump status pin (162). The status synchronization module also includes a backup start branch, which includes a third AND gate (331) and a fourth AND gate (332). The first input of the third AND gate (331) is connected to the first pressure information pin (161) through an inverter. The second input of the third AND gate (331) is connected to the backup delivery pump status pin (162). The output of the third AND gate (331) is connected to the first input of the fourth AND gate (332). The second input of the fourth AND gate (332) is connected to the remote stop pin (14) through an inverter and the first NOT gate (322). The third input of the fourth AND gate (332) is connected to the test pin (15). When the first pressure information pin (161) inputs a pressure abnormality signal, the backup delivery pump status pin (162) inputs a backup delivery pump available signal, the test pin (15) inputs a test start signal, and the remote stop pin (14) is not triggered, the output of the fourth AND gate (332) triggers the automatic start pin (23) so that the motor module (20) outputs a signal to start the backup delivery pump and adjusts the recorded motor status to the automatic start state.

8. The control system according to claim 1, characterized in that, The delivery pump is connected to the target object to deliver a medium to the target object. The motor module (20) also includes an automatic stop pin (24). The control system also includes a delivery pump abnormality detection branch, a target object status pin (19), and a fifth AND gate (341). The first input of the fifth AND gate (341) is connected to the delivery pump abnormality detection branch through an inverter. The second input of the fifth AND gate (341) is connected to the target object status pin (19) through an inverter. The output of the fifth AND gate (341) is connected to the automatic stop pin (24). When the abnormal detection branch of the delivery pump outputs an abnormal signal and the target object status pin (19) inputs a target object stop signal, the fifth AND gate (341) triggers the automatic stop pin (24) so ​​that the motor module (20) updates the motor status to the automatic stop state and outputs a stop command to the motor so that the motor switches to the stop state.

9. The control system according to claim 8, characterized in that, When the target object status pin (19) inputs the target object running signal, the abnormal detection branch of the delivery pump outputs an abnormal signal or a normal signal, and the output of the fifth AND gate (341) outputs a low level to the automatic stop pin (24).

10. The control system according to claim 8, characterized in that, A second delay unit (342) is also provided between the inverter of the second input terminal of the target object status pin (19) and the fifth AND gate (341). The second delay unit (342) outputs a low level when the duration of the target object stop signal input to the target object status pin (19) meets the second threshold.

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