Equipment electrical fast transient pulse train detection and control system and charging pile

Abstract

The invention relates to the technical field of electrical fast transient pulse train detection, in particular to an equipment electrical fast transient pulse train detection and control system and a charging pile, the system comprises a main board, a main control unit and an onboard relay are integrated on the main board, the onboard relay is configured at a pin of the main board, the main board is connected with an equipment component through the pin, and the main board is connected with the equipment component through the pin. The on-board relay is used for realizing electrical isolation between the mainboard control loop and an external circuit, and in a normal state, the on-board relay is in a closed state; and the main control unit is used for performing electrical fast transient burst interference detection and response on the running equipment, and is also used for performing downtime protection control on the downtime host. Therefore, active detection and response of the electrical fast transient pulse train can be carried out on the running equipment, meanwhile, downtime protection is carried out on the mainboard, the running stability of the equipment is improved, and the operation and maintenance cost is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical fast transient pulse group detection, and in particular to a detection and control system for electrical fast transient pulse groups of equipment and a charging pile. Background Art

[0002] Electrical Fast Transient / burst (EFT) is mainly caused by cutting off inductive loads, relay contact jitter, high-voltage switch switching, etc. This transient disturbance consists of a large number of pulses.

[0003] Therefore, developing a system for detecting and controlling electrical fast transient pulse groups is a problem that needs to be solved. Summary of the invention

[0004] In order to solve one of the above technical problems, the present invention proposes the following technical solution.

[0005] The first aspect of the present invention proposes a detection and control system for electrical fast transient pulse groups of equipment, including a main board, on which a main control unit and an onboard relay are integrated, the onboard relay is configured at the pins of the main board, and the main board is connected to the components of the equipment through the pins. The onboard relay is used to achieve electrical isolation between the mainboard control loop and the external circuit. Under normal conditions, the onboard relay is in a closed state; the main control unit is used to detect and respond to electrical fast transient pulse group interference in the running equipment, and is also used to perform downtime protection control on the host after a downtime.

[0006] In addition, the detection and control system for electrical fast transient pulse groups of equipment according to the above-mentioned embodiment of the present invention may also have the following additional technical features.

[0007] According to one embodiment of the present invention, a redundant power supply and a backup battery are also integrated on the main board. The main control unit is also used to enable the redundant power supply or the backup battery to power the main board when the main board loses power or the main power supply is abnormal, and to perform mainboard power loss protection and recovery control.

[0008] According to one embodiment of the present invention, a power supply detection circuit is also integrated on the mainboard, and the power supply detection circuit is used to detect whether the mainboard has lost power and whether the main power supply of the mainboard is abnormal, and is also used to detect whether the redundant power supply and backup battery of the mainboard are abnormal.

[0009] According to one embodiment of the present invention, a bandwidth filter circuit is also integrated on the main board. The bandwidth filter circuit is arranged at the feedback port of the electrical fast transient pulse group detection main board. The bandwidth filter circuit is used to filter out high-frequency noise interference. Under normal conditions, the bandwidth filter circuit does not participate in signal processing. When an abnormal situation is detected, it is automatically switched to the circuit.

[0010] According to an embodiment of the present invention, a distortion signal detection circuit is also integrated on the mainboard, and the distortion signal detection circuit is used to determine whether the mainboard communication is distorted.

[0011] According to one embodiment of the present invention, when the main control unit performs electrical fast transient pulse group interference detection and response on a running device, it is specifically used to: when the device is subjected to electrical fast transient pulse group interference during operation, detect that the components of the device malfunction, and record the number of malfunctions; when the number of malfunctions is multiple, start the detection program to detect whether the component is a key component; if the component is a key component, control the device to stop running, issue an alarm and report a fault code to the monitoring platform; if the component is not a key component, disconnect the pins related to the component and keep the device running.

[0012] According to one embodiment of the present invention, when the main control unit performs downtime protection control on the host after a downtime, it is specifically used to: when the mainboard is subjected to electrical fast transient pulse group interference during equipment operation, causing the mainboard to crash, disconnect the onboard relays except the onboard relay at the power supply; enter the electrical fast transient pulse group interference self-test mode to detect components and pins related to the mainboard crash, and feed back the component and pin numbers to the monitoring platform; start the detection program to detect whether the component is a key component; if the component is a key component, control the device to stop running, issue an alarm and report a fault code to the monitoring platform; if the component is not a key component, disconnect the pins related to the component and keep the device running.

[0013] According to one embodiment of the present invention, the electrical fast transient pulse group interference self-test mode is: to energize the current onboard relay, and determine whether the mainboard crashes again after a first preset time. If the mainboard crashes again, the number of the crash pin is recorded, and the phase components and pin numbers are fed back to the monitoring platform. After restarting the mainboard and skipping the crash pin, the process returns to the step of energizing the current onboard relay until the end.

[0014] According to one embodiment of the present invention, when the main control unit performs power failure protection and recovery control of the mainboard, it is specifically used to: when the main power supply of the mainboard is interfered by an electrical fast transient pulse group, causing the mainboard to lose power, report the mainboard power failure to the monitoring platform, disconnect all onboard relays, and at the same time control the onboard relay at the power supply end to be energized once every second preset time to detect whether the power supply of the mainboard has returned to normal; if it is detected that the power supply of the mainboard has returned to normal, control the onboard relay at the power supply end to remain in a closed state, and control the remaining onboard relays to be energized to restore the normal operation of the device.

[0015] The second aspect of the present invention proposes a charging pile, including a power distribution unit, a charging plate and a detection and control system for the equipment electrical fast transient pulse group proposed in the first aspect of the present invention, and the system is communicated with the power distribution unit and the charging plate respectively.

[0016] The technical solution of the embodiment of the present invention can actively detect and respond to electrical fast transient pulse groups of running equipment, and at the same time protect the mainboard from downtime, thereby improving the operating stability of the equipment and saving operation and maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the mainboard of the detection and control system of the electrical fast transient pulse group EFT of the equipment according to the embodiment of the present invention.

[0018] Figure 2 The present invention is a flowchart of EFT interference detection and response and mainboard downtime protection control according to an embodiment of the present invention.

[0019] Figure 3 It is a structural block diagram of a charging pile according to an embodiment of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Figure 1 This is a structural schematic diagram of a mainboard of a device electrical fast transient pulse group detection and control system according to an embodiment of the present invention.

[0022] like Figure 1 As shown, the detection and control system of the electrical fast transient pulse group of the equipment includes a main board 1 (PCB board), on which the main control unit and on-board relays J1 to J6 are integrated. The on-board relays are configured at all external pins of the main board 1. Figure 1 POWER refers to the power pin, PCB-OUT refers to the pin that controls the on / off of the external protection circuit, PCB-IN and PCB-IN-POWER refer to the EFT detection circuit pins, and CAN / RS485 refers to the motherboard communication interface. The motherboard is connected to the components of the device through the pins to detect and respond to the electrical fast transient pulse group of the device.

[0023] Figure 1 In the figure, PCIE refers to the external interface, which is used to expand the EFT detection motherboard. 4G is connected to the platform and feeds the detection information back to the platform through the 4G signal. BIT DIP SWITCH is a 6-bit dial, which is used to allocate addresses after the EFT motherboard is expanded.

[0024] The onboard relay is used to achieve electrical isolation between the mainboard control circuit and the external circuit. Under normal conditions, the onboard relay is in a closed state, and the mainboard can normally receive feedback signals and execute control instructions. The main control unit is used to detect and respond to electrical fast transient pulse group interference on the running equipment, and is also used to control the downtime protection of the host after the downtime.

[0025] Specifically, when the device is running, the onboard relay is closed, and the main control unit is connected to the external circuit and external port through the mainboard pins and the onboard relay to detect EFT interference, and respond accordingly when EFT interference is detected, so as to realize active screening and response to EFT interference. When the device is interfered by EFT and the mainboard crashes, the onboard relay can be used to perform corresponding protection and self-recovery control to realize the protection of the crashed mainboard under EFT interference.

[0026] Among them, the main board 1 has a PLD simulation test algorithm to determine whether the device can work normally when the power quality is poor or it is subjected to EFT impact.

[0027] Therefore, the detection and control system for electrical fast transient pulse groups of equipment in the embodiment of the present invention can actively detect and respond to electrical fast transient pulse groups of running equipment, and at the same time protect the mainboard from downtime, thereby improving the operating stability of the equipment and saving operation and maintenance costs.

[0028] In one embodiment, a redundant power supply and a backup battery are integrated on the mainboard 1. The main control unit is also used to enable the redundant power supply or the backup battery to supply power to the mainboard when the mainboard loses power, and is also used to perform mainboard power failure protection and recovery control.

[0029] Further, refer to Figure 1 The mainboard 1 also integrates a power detection circuit for detecting whether the mainboard loses power and whether the main power supply of the mainboard is abnormal, and is also used to detect whether the redundant power supply and backup battery of the mainboard are abnormal.

[0030] Specifically, refer to Figure 1 The redundant power supply can be an onboard capacitor C, which charges the onboard capacitor when the mainboard 1 is powered on, and the onboard capacitor C continues to provide power to the mainboard after the mainboard 1 loses power. The backup battery can be a button battery CR2032, which continues to supply power to the mainboard as a redundant power supply when the onboard capacitor C fails.

[0031] When the power detection circuit detects that the mainboard 1 loses power or the main power supply is abnormal, the main control unit can also perform power failure protection and recovery control through the onboard relay to protect the mainboard 1 and restore the device to normal operation.

[0032] Therefore, the motherboard has built-in onboard capacitors and backup batteries as redundant backup for the main power supply, ensuring that when the main power supply fails, the device can maintain basic operation, including reporting fault information, disconnecting relays and other key operations.

[0033] In one embodiment, referring to Figure 1 The main board 1 also integrates a bandwidth filter circuit, which is arranged at the feedback port of the electrical fast transient pulse group detection main board.

[0034] The bandwidth filter circuit is used to filter out high-frequency noise interference. Under normal conditions, the bandwidth filter circuit does not participate in signal processing. When an abnormal situation is detected, it is automatically switched into the circuit according to the preset judgment logic to enhance the anti-interference ability of the equipment.

[0035] In one embodiment, referring to Figure 1 The mainboard 1 also integrates a distortion signal detection circuit, which is used to determine whether the mainboard communication is distorted.

[0036] Specifically, the distortion signal detection circuit is mainly composed of a high-speed sampling circuit and a comparison circuit. The analysis of the comparison circuit output is used to determine whether the communication is distorted. For digital CAN signals, they are compared frame by frame with the standard digital signal template. If there is a misalignment or timing error between the detected signal and the template signal, it means that the communication is distorted.

[0037] In one embodiment, when the main control unit detects and responds to electrical fast transient pulse group interference on a running device, it is specifically used to: when the device is subjected to electrical fast transient pulse group interference during operation, detect that the components of the device have malfunctioned, and record the number of malfunctions; when the number of malfunctions is multiple, start the detection program to detect whether the component is a key component; if the component is a key component, control the device to stop running, issue an alarm and report the fault code to the monitoring platform; if the component is not a key component, disconnect the pins related to the component and keep the device running.

[0038] Among them, each pin of the mainboard is connected to the corresponding components of the device. Key components refer to components that affect the normal operation of the device. In actual applications, they can be set in advance according to the specific needs of the device operation.

[0039] Specifically, the EFT interference detection and response process is as follows: Figure 2 As shown in the figure, when the mainboard power supply or peripheral circuits are subject to EFT interference, the mainboard control pins (pins) may be affected, causing the components of the device to malfunction. When the main control unit detects that a component malfunctions, it records the number of malfunctions (n). When n ≥ 2, it is further recorded as m. If m ≥ 2 times, the detection program is started to detect whether the component is a key component. According to the test results, if the component belongs to the key component K, it is determined that the device cannot be used normally, the control device stops running, and an alarm message is immediately issued and the fault code is reported to the monitoring platform; if it does not belong to K, the mainboard pins related to the component are disconnected, and its corresponding detection or control program is shielded to keep the device running.

[0040] Therefore, when EFT interference occurs during equipment operation, it causes equipment components to malfunction, and the equipment is controlled to stop or continue running according to the number of malfunctions, thereby achieving active detection and response to equipment EFT interference.

[0041] In one embodiment, when the main control unit performs downtime protection control on the host after a downtime, it is specifically used to: when the mainboard is subjected to electrical fast transient pulse group interference during equipment operation, causing the mainboard to crash, disconnect the onboard relays except the onboard relay at the power supply; enter the electrical fast transient pulse group interference self-test mode to detect components and pins related to the mainboard crash, and feed back the component and pin number to the monitoring platform; start the detection program to detect whether the component is a key component; if the component is a key component, control the equipment to stop running, issue an alarm and report the fault code to the monitoring platform; if the component is not a key component, disconnect the pin related to the component and keep the equipment running.

[0042] Furthermore, the electrical fast transient pulse group interference self-test mode is: to energize the current onboard relay, and determine whether the mainboard crashes again after a first preset time. If the mainboard crashes again, the number of the crash pin is recorded, and the phase components and pin numbers are fed back to the monitoring platform. The mainboard is restarted and the crash pin is skipped, and then the step of energizing the current onboard relay is returned until the end.

[0043] Specifically, refer to Figure 2When the device is disturbed by EFT and the mainboard crashes, the main control unit immediately disconnects the onboard relays except the onboard relay (J1) at the power supply and enters the EFT self-test mode, that is, the current onboard relay is energized, and after 10 seconds, it is determined whether the mainboard crashes again. If it crashes again, the current pin number is recorded, and the relevant components and pin numbers are fed back to the monitoring platform. After the mainboard is restarted, the pin is skipped and the process returns to the step of energizing the current onboard relay until all pins and components are judged and the self-test is terminated. The mainboard pins and components corresponding to the crash are obtained and fed back to the monitoring platform.

[0044] Detect whether the component is a key component. If it is, the control device stops running, an alarm is issued and the fault code is reported to the monitoring platform; if not, the pins related to the component are disconnected and the device continues to run.

[0045] In one embodiment, when the main control unit is performing power failure protection and recovery control for the mainboard, it is specifically used to: when the main power supply of the mainboard is interfered by EFT and causes the mainboard to lose power, report the mainboard power failure to the monitoring platform, disconnect all onboard relays, and at the same time control the onboard relay at the power supply end to be energized once every second preset time to detect whether the power supply of the mainboard has returned to normal; if it is detected that the power supply of the mainboard has returned to normal, control the onboard relay at the power supply end to remain in a closed state, and control the remaining onboard relays to be energized to restore the device to normal operation.

[0046] Specifically, when the main power supply at the front end of the motherboard is interfered by EFT and causes the motherboard to lose power, the onboard capacitor and backup battery will maintain the basic activities of the motherboard. At this time, the main control unit immediately reports the motherboard power failure to the monitoring platform and disconnects all onboard relays. At the same time, the power supply end relay is controlled to be energized once a minute, and the power supply detection circuit is used to monitor whether the front-end power supply is restored. Once the power supply is detected to be normal, the power supply end relay remains closed and controls the remaining relays to be energized, so that the equipment resumes normal operation.

[0047] In summary, the detection and control system of the electrical fast transient pulse group of the equipment in the embodiment of the present invention can actively eliminate the interfering line after the equipment is subjected to EFT interference, restore the operation of the equipment, and improve the operation stability of the equipment; actively analyze the problem lines and problem equipment, saving R&D and operation and maintenance costs.

[0048] Corresponding to the detection and control system of the electrical fast transient pulse group of the equipment in the above-mentioned embodiment, the present invention also proposes a charging pile.

[0049] Figure 3 It is a structural block diagram of a charging pile according to an embodiment of the present invention.

[0050] like Figure 3As shown, the charging pile includes a power distribution unit, a charging board and a detection and control system for electrical fast transient pulse groups of the equipment in the above-mentioned embodiment, and the system is connected to the power distribution unit and the charging board for CAN communication respectively.

[0051] Specifically, refer to Figure 3 ,The main control unit of the system communicates with the power distribution unit and the charging board respectively. When ,the charging pile is running, the main control unit actively detects whether the power distribution unit and the charging board are ,interfered with EFT and responds accordingly.

[0052] It should be noted that the specific implementation of the charging pile can refer to the specific implementation of the detection and control system of the electrical fast transient pulse group of the above-mentioned equipment. In order to avoid redundancy, it will not be described in detail here.

[0053] The charging pile of the embodiment of the present invention can actively detect and respond to the electrical fast transient pulse group of the running charging pile through the detection and control system of the electrical fast transient pulse group of the equipment, and perform downtime protection at the same time, thereby improving the operating stability of the equipment and saving operation and maintenance costs.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be construed as limitations on the present invention, and those of ordinary skill in the art can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A detection and control system for electrical fast transient pulse groups of equipment, characterized in that: It includes a mainboard, on which a main control unit and an onboard relay are integrated, the onboard relay is configured at the pins of the mainboard, and the mainboard is connected to the components of the device through the pins, The onboard relay is used to realize electrical isolation between the mainboard control circuit and the external circuit. Under normal conditions, the onboard relay is in a closed state; The main control unit is used to detect and respond to electrical fast transient pulse group interference on the running equipment, and is also used to perform downtime protection control on the host after downtime.

2. The detection and control system for electrical fast transient pulse groups of equipment according to claim 1 is characterized in that: The mainboard also integrates a redundant power supply and a backup battery. The main control unit is also used to enable the redundant power supply or the backup battery to supply power to the mainboard when the mainboard loses power or the main power supply is abnormal, and to perform mainboard power failure protection and recovery control.

3. The detection and control system of electrical fast transient pulse groups of equipment according to claim 2, characterized in that: The mainboard also integrates a power detection circuit. The power supply detection circuit is used to detect whether the mainboard has lost power and whether the main power supply of the mainboard is abnormal, and is also used to detect whether the redundant power supply and backup battery of the mainboard are abnormal.

4. The detection and control system for electrical fast transient pulse groups of equipment according to claim 1, characterized in that: The mainboard also integrates a bandwidth filter circuit, which is arranged at the feedback port of the electrical fast transient pulse group detection mainboard. The bandwidth filter circuit is used to filter out high-frequency noise interference. Under normal conditions, the bandwidth filter circuit does not participate in signal processing. When an abnormal situation is detected, it is automatically switched into the circuit.

5. The detection and control system of electrical fast transient pulse groups of equipment according to claim 1, characterized in that: The mainboard is also integrated with a distortion signal detection circuit, and the distortion signal detection circuit is used to determine whether the mainboard communication is distorted.

6. The detection and control system for electrical fast transient pulse groups of equipment according to claim 1, characterized in that: When the main control unit detects and responds to electrical fast transient pulse group interference on the running equipment, it is specifically used to: When the equipment is interfered by electrical fast transient pulse groups during operation, it is detected that the components of the equipment malfunction and the number of malfunctions is recorded; When the number of malfunctions is multiple, starting a detection program to detect whether the component is a key component; If the component is a critical component, the device is controlled to stop running, an alarm is issued and a fault code is reported to the monitoring platform; If the component is not a critical component, the pins related to the component are disconnected and the device is kept running.

7. The detection and control system for electrical fast transient pulse groups of equipment according to claim 1, characterized in that: When the main control unit performs downtime protection control on the host after downtime, it is specifically used to: When the mainboard is disturbed by an electrical fast transient pulse group during the operation of the equipment, causing the mainboard to shut down, disconnect the onboard relays except the onboard relay at the power supply; Enter the EFT self-test mode to detect components and pins related to the motherboard failure, and feed back the component and pin numbers to the monitoring platform; Starting a detection program to detect whether the component is a key component; If the component is a critical component, the device is controlled to stop running, an alarm is issued and a fault code is reported to the monitoring platform; If the component is not a critical component, the pins related to the component are disconnected and the device is kept running.

8. The detection and control system for electrical fast transient pulse groups of equipment according to claim 7, characterized in that: The electrical fast transient pulse group interference self-test mode is: The current onboard relay is attracted, and after a first preset time, it is determined whether the mainboard crashes again. If the mainboard crashes again, the number of the crash pin is recorded, and the phase component and pin number are fed back to the monitoring platform. The mainboard is restarted and the crash pin is skipped, and then the step of attracting the current onboard relay is returned until the end.

9. The detection and control system for electrical fast transient pulse groups of equipment according to claim 2, characterized in that: When the main control unit performs power-off protection and recovery control on the mainboard, it is specifically used to: When the main power supply of the mainboard is interfered by an electrical fast transient pulse group and causes the mainboard to lose power, the mainboard power failure is reported to the monitoring platform, and all onboard relays are disconnected, and at the same time, the onboard relay at the power supply end is controlled to be attracted once every second preset time to detect whether the power supply of the mainboard has returned to normal; If it is detected that the power supply of the mainboard has returned to normal, the onboard relay at the power supply end is controlled to remain in a closed state, and the remaining onboard relays are controlled to be energized, so that the device returns to normal operation.

10. A charging pile, characterized in that: It comprises a power distribution unit, a charging plate and a detection and control system for electrical fast transient pulse groups of the equipment as claimed in any one of claims 1 to 9, wherein the system is communicatively connected with the power distribution unit and the charging plate respectively.

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