CN117080992A - Method and device for realizing fault detection processing - Google Patents
Method and device for realizing fault detection processing Download PDFInfo
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- CN117080992A CN117080992A CN202310926869.8A CN202310926869A CN117080992A CN 117080992 A CN117080992 A CN 117080992A CN 202310926869 A CN202310926869 A CN 202310926869A CN 117080992 A CN117080992 A CN 117080992A
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- 238000001514 detection method Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000004146 energy storage Methods 0.000 claims abstract description 62
- 230000008569 process Effects 0.000 claims description 16
- 239000000872 buffer Substances 0.000 claims description 4
- 239000006148 magnetic separator Substances 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 2
- 238000002955 isolation Methods 0.000 abstract description 10
- 239000003990 capacitor Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 3
- 230000008054 signal transmission Effects 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H1/00—Details of emergency protective circuit arrangements
- H02H1/06—Arrangements for supplying operative power
Abstract
The application discloses a method and a device for realizing fault detection processing, comprising the following steps: the power relay control system comprises a main control unit, a relay control unit, more than one group of power relays and an energy storage circuit, wherein each group of power relays and the energy storage circuit are connected with one device; the main control unit determines whether to output pulse signals with preset widths to the relay control unit according to preset periods for each device according to whether device faults are detected or not; the relay control unit controls the power relay contacts to be closed and opened according to whether pulse signals are received or not; the power relay is set as: when the contacts are closed, the power supply is used for supplying power to the equipment, and the energy storage circuit connected with the equipment is charged; the energy storage circuit is arranged as follows: when the power relay contacts are opened, the power is supplied to the device for the rest of the period except for charging. The embodiment of the application realizes the automatic detection and isolation of the equipment faults, avoids the influence of the equipment faults on the system, and improves the reliability and safety of the system operation.
Description
Technical Field
The present application relates to, but is not limited to, automated testing techniques, and relates to a method and apparatus for implementing fault detection processing.
Background
The fault detection and isolation technology is widely applied in the fields of automatic testing and the like. In the fault detection and isolation method in the related art, a fault detection and active reporting mode is generally adopted, and after receiving a fault alarm, a user or a maintainer is required to manually remove the fault equipment; during the period from the occurrence of the fault to the completion of fault isolation, the fault equipment is still connected inside the system, and the operation state of the fault equipment is abnormal, so that the fault equipment cannot be automatically isolated off-line and can be accompanied by the output of abnormal dangerous signals, and the whole system is caused to have operation faults. How to improve the processing efficiency of equipment faults, avoid the influence of the equipment faults on the system, improve the reliability and the safety of the system operation, and become a problem to be solved.
Disclosure of Invention
The following is a summary of the subject matter of the detailed description of the application. This summary is not intended to limit the scope of the claims.
The embodiment of the application provides a method and a device for realizing fault detection processing, which can realize automatic detection and isolation of equipment faults, avoid the influence of the equipment faults on a system and improve the reliability and the safety of the system operation.
The embodiment of the application provides a device for realizing fault detection processing, which comprises the following components: the system comprises a main control unit, a relay control unit and more than one group of power relays and energy storage circuits, wherein each group of power relays and energy storage circuits are connected with a predetermined device which needs fault detection processing; wherein,
the main control unit is set as follows: for each device, determining whether to output a pulse signal with a preset width to a relay control unit according to a preset period according to whether the device fault is detected;
the relay control unit is provided with: according to whether a pulse signal is received or not, controlling the power relay to execute contact closing and opening processing;
the power relay is set as: when the contacts are closed, the power supply is used for supplying power to the equipment, and the energy storage circuit connected with the power relay is charged through the power supply;
the energy storage circuit is arranged as follows: when the power relay contacts are opened, the power is supplied to the device for the rest of the period except for charging.
On the other hand, the embodiment of the application also provides a method for realizing fault detection processing, which is provided with more than one group of power relays and energy storage circuits in advance, wherein each group of power relays and energy storage circuits are connected with a device needing fault detection processing, and the method comprises the following steps of:
determining whether to output a pulse signal with a preset width to the relay control unit according to a preset period according to whether the equipment fault is detected, so that the relay control unit controls the power relay to execute contact closing and opening processing according to whether the pulse signal is received;
when the contacts of the power relay are closed, the power supply is used for supplying power to the equipment, and meanwhile, the energy storage circuit connected with the power relay is charged through the power supply;
when the power relay contacts are opened, the power is supplied to the device for the rest of the period except for charging.
The technical scheme of the application comprises the following steps: the system comprises a main control unit, a relay control unit and more than one group of power relays and energy storage circuits, wherein each group of power relays and energy storage circuits are connected with a predetermined device which needs fault detection processing; wherein, the main control unit sets up to: for each device, determining whether to output a pulse signal with a preset width to a relay control unit according to a preset period according to whether the device fault is detected; the relay control unit is provided with: according to whether a pulse signal is received or not, controlling the power relay to execute contact closing and opening processing; the power relay is set as: when the contacts are closed, the power supply is used for supplying power to the equipment, and the energy storage circuit connected with the power relay is charged through the power supply; the energy storage circuit is arranged as follows: when the power relay contacts are opened, the power is supplied to the device for the rest of the period except for charging. According to the embodiment of the disclosure, the charging process of the energy storage circuit is performed through the pulse signal, after the charging is finished, the energy storage circuit supplies power to the equipment in the residual period of the pulse signal transmission period, if the equipment fault is detected, the main control unit does not transmit the pulse signal any more, the equipment power supply is interrupted, namely, the automatic detection and isolation of the equipment fault are realized, the influence of the equipment fault on a system is avoided, and the reliability and the safety of the system operation are improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and do not limit the application.
FIG. 1 is a block diagram of an apparatus for implementing fault detection processing according to an embodiment of the present application;
FIG. 2 is a flow chart of a method for implementing fault detection processing according to an embodiment of the present application;
FIG. 3 is a schematic diagram of an exemplary apparatus for use with the present application;
fig. 4 is a process flow diagram of an example of an application of the present application.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present application more apparent, embodiments of the present application will be described in detail hereinafter with reference to the accompanying drawings. It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be arbitrarily combined with each other.
The steps illustrated in the flowchart of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, while a logical order is depicted in the flowchart, in some cases, the steps depicted or described may be performed in a different order than presented herein.
Fig. 1 is a block diagram of an apparatus for implementing fault detection processing according to an embodiment of the present application, as shown in fig. 1, including: the system comprises a main control unit, a relay control unit and more than one group of power relays and energy storage circuits, wherein each group of power relays and energy storage circuits are connected with a predetermined device (different devices and the power relays and energy storage circuits of different devices) which needs fault detection processing, and the power relays and the energy storage circuits of the different devices are distinguished by the serial numbers of the components in the figure 1); wherein,
the main control unit is set as follows: for each device, determining whether to output a pulse signal with a preset width to a relay control unit according to a preset period according to whether the device fault is detected;
the relay control unit is provided with: according to whether a pulse signal is received or not, controlling the power relay to execute contact closing and opening processing;
the power relay is set as: when the contacts are closed, the power supply is used for supplying power to the equipment, and the energy storage circuit connected with the power relay is charged through the power supply;
the energy storage circuit is arranged as follows: when the power relay contacts are opened, the power is supplied to the equipment in the residual period.
According to the embodiment of the disclosure, the charging process of the energy storage circuit is performed through the pulse signal, after the charging is finished, the energy storage circuit supplies power to the equipment in the residual period of the pulse signal transmission period, if the equipment fault is detected, the main control unit does not transmit the pulse signal any more, the equipment power supply is interrupted, namely, the automatic detection and isolation of the equipment fault are realized, the influence of the equipment fault on a system is avoided, and the reliability and the safety of the system operation are improved.
In one illustrative example, devices requiring fault detection processing in accordance with embodiments of the present disclosure may include the following kinds of devices: the fault tolerance rate is smaller than a preset fault tolerance rate threshold value, and logic connection exists between the fault tolerance rate and other equipment in the system, and when the fault occurs, the operation of the other equipment which is in logic connection with the fault tolerance rate can be influenced, so that the system is abnormal in operation. The above-described devices requiring a fault detection process may be determined analytically by those skilled in the art.
In one illustrative example, the power relay and tank circuit of the disclosed embodiments are connected to the above-described devices through an external interface unit. It should be noted that, in the embodiment of the present disclosure, a relay control unit corresponding to each device may be provided, or a plurality of devices that need to be detected by a fault may be provided to share one relay control unit; in other words, for each device requiring the fault detection process, a corresponding group of power relays and tank circuits is necessarily included, but one relay control unit may be shared among a plurality of devices. When the system includes a plurality of devices, the embodiments of the present disclosure may share one main control unit and an electromechanical control unit among the plurality of devices.
In an exemplary example, the disclosed embodiments may integrate the above-described apparatus into devices, each device including a respective master control unit, relay control unit, power relay, and tank circuit; the embodiment of the disclosure can also connect one device with each device, and each device comprises a corresponding main control unit, a relay control unit, a power relay and a storage circuit
In one illustrative example, the relay control unit of the embodiment of the present disclosure is configured to: and receiving a pulse signal, controlling the power relay to execute contact closing processing within the width time of the pulse signal according to the received pulse signal, and controlling the power relay to execute contact opening processing when the pulse signal disappears.
According to the embodiment of the disclosure, the control of the closing time of the power relay contact can be realized by setting the pulse signal width, and a basis is provided for controlling the charging of the energy storage circuit and the power supply control of equipment.
In one illustrative example, the master control unit of the disclosed embodiments is configured to:
for each device, when no device fault is detected, outputting a pulse signal to a relay control unit according to a period; when a device failure is detected, the output of the pulse signal to the relay control unit is stopped.
In an exemplary example, the master control unit of the disclosed embodiment is further configured to:
when the self-failure is detected, the output of the pulse signal to the relay control unit is stopped.
When the main control unit fails, the processing of stopping pulse signal output is performed, so that the influence of the main control unit failure on the operation of equipment is avoided, and the reliability and the safety of the operation of the system are improved.
In one illustrative example, the relay control unit of the embodiments of the present disclosure is composed of elements of one of any of the following categories: a data buffer, a photo coupler and a magnetic separator.
It should be noted that, the relay control unit according to the embodiments of the present disclosure may also be implemented by other elements, chips or devices with reference to the related art, so long as the function of the relay control unit can be implemented, and the embodiments of the present disclosure are not limited thereto.
In one illustrative example, the expression of the capacitance capacity of the tank circuit of the disclosed embodiments is:
C＝2P(T-t)/(U max -U min ) 2 ；
wherein U is min ～U max The working voltage range of the equipment is represented, T is the transmission period of the pulse signal, and T is the width of the pulse signal; here, when the device is connected through the external interface unit, U min ～U max Representing the allowed supply voltage range of the external interface unit.
The embodiment of the disclosure can realize the parameter configuration of the energy storage circuit based on the capacitance calculation formula, and provide accurate parameters for realizing the power supply control of equipment.
In an exemplary embodiment, each group of power relay and tank circuit of the disclosed embodiment is further connected to a current limiting unit, two ends of the current limiting unit are respectively connected to the tank circuit and ground, and the current limiting unit is configured to: and current limiting is performed in the charging process of the energy storage circuit.
In one illustrative example, the current limiting unit of the disclosed embodiments is composed of any one of the following types of elements:
resistance, inductance, or a component having a current limiting function composed of two or more components.
According to the embodiment of the disclosure, the current impact at the initial charging moment is avoided through the current limiting unit, and the stability and safety of the device are improved.
In one illustrative example, the width of the pulse signal of the disclosed embodiments satisfies: t=4τ=4rc;
wherein, C is the capacitance of the energy storage circuit, and R is the equivalent resistance of the current limiting unit.
According to the embodiment of the disclosure, the width of the pulse signal is calculated through the formula, and parameter support is provided for realizing the charge control of the energy storage circuit; in the embodiment of the disclosure, the capacitor of the energy storage circuit realizes the charging treatment of electric energy within the time period of t=4τ. In the embodiment of the disclosure, charging is performed within the period duration and the width T of the pulse signal, a power supply directly supplies power to equipment within the period T, and a tank circuit supplies power within the period T-T; once the pulse signal is no longer periodically emitted, the power supply will no longer be connected, and the device will not be supported by the power supply.
Fig. 2 is a flowchart of a method for implementing fault detection processing according to an embodiment of the disclosure, where more than one set of power relays and tank circuits are preset, each set of power relays and tank circuits is connected to a device that needs fault detection processing, and for each device that needs fault detection processing, as shown in fig. 2, the method includes:
step 201, determining whether to output a pulse signal with a preset width to a relay control unit according to a preset period according to whether equipment faults are detected, so that the relay control unit controls the power relay to execute contact closing and opening processing according to whether the pulse signal is received;
202, when the contacts of the power relay are closed, the power supply is used for supplying power to equipment, and a storage circuit connected with the power relay is charged through the power supply;
and 203, when the power relay contacts are opened, the equipment is powered for the rest period.
According to the embodiment of the disclosure, the charging process of the energy storage circuit is performed through the pulse signal, after the charging is finished, the energy storage circuit supplies power to the equipment in the residual period of the pulse signal transmission period, if the equipment fault is detected, the main control unit does not transmit the pulse signal any more, the equipment power supply is interrupted, namely, the automatic detection and isolation of the equipment fault are realized, the influence of the equipment fault on a system is avoided, and the reliability and the safety of the system operation are improved.
In an illustrative example, the process of step 201 is performed by the master control unit in an embodiment of the present disclosure, and the method in an embodiment of the present disclosure further includes:
when the main control unit detects that the main control unit fails, the main control unit stops outputting the pulse signal to the relay control unit.
In one illustrative example, the expression of the capacitance capacity of the tank circuit of the disclosed embodiments is:
C＝2P(T-t)/(U max -U min ) 2 ；
wherein U is min ～U max The operating voltage range for the device is shown, T being the period of the transmitted pulse signal and T being the width of the pulse signal.
In an exemplary embodiment, each group of power relay and tank circuit of the disclosed embodiment is further connected to a current limiting unit, two ends of the current limiting unit are respectively connected to the tank circuit and ground, and the current limiting unit is configured to: and current limiting is performed in the charging process of the energy storage circuit.
In one illustrative example, the current limiting unit of the disclosed embodiments is composed of any one of the following types of elements:
resistance, inductance, or a component having a current limiting function composed of two or more components.
In one illustrative example, the width of the pulse signal of the disclosed embodiments satisfies: t=4τ=4rc;
wherein, C is the capacitance of the energy storage circuit, and R is the equivalent resistance of the current limiting unit.
In one illustrative example, the relay control unit of the embodiments of the present disclosure is composed of elements of one of any of the following categories: a data buffer, a photo coupler and a magnetic separator.
The following briefly describes embodiments of the present disclosure by way of application examples, which are merely set forth embodiments of the present disclosure and are not intended to limit the scope of the embodiments of the present disclosure.
Application example
The application example provides a fault detection processing method, which is used for realizing equipment fault detection and automatic offline isolation of fault equipment, wherein the example only schematically comprises equipment needing fault detection processing, and the equipment is connected with a fault detection processing device of the embodiment of the disclosure through an external interface unit; fig. 3 is a schematic diagram of an exemplary device applied to the present application, as shown in fig. 3, a main control unit outputs a pulse signal with a width T to a relay control unit according to a period T, and the relay control unit controls a power relay contact to be closed under the driving of the input pulse signal so as to charge an energy storage circuit connected with a power relay while supplying power to an external interface unit; after the pulse signal with the width of T disappears, the power relay contacts are disconnected, and the energy storage circuit supplies power to the external interface unit in other periods except T in the period T, namely, the energy storage circuit supplies power to equipment connected with the external interface unit.
In an exemplary embodiment, when the main control unit of the application example fails or detects a device failure, the output of the pulse signal according to a preset period is stopped, the relay control unit can not receive the pulse signal, the power relay is not driven to be closed any more, the power relay keeps the contact open, the external interface unit is powered off after the energy of the energy storage circuit is exhausted, and the device is disconnected from the electrical connection of the system and is automatically offline.
The embodiment of the disclosure avoids the influence of equipment faults on the normal operation of the system, improves the reliability and the safety of the system, realizes the automatic off-line isolation processing of equipment while realizing the automatic detection of the equipment faults, and reduces the manual consumption and the equipment fault processing time delay.
In one illustrative example, the tank circuit of the disclosed embodiments may be implemented with a high capacity capacitor in parallel for powering the external interface unit when the power relay contacts are open. Capacitance of energy storage circuit (C)The external interface unit needs to be combined to allow the supply voltage range (U min ～U max ) The power consumption (P) of the external interface unit, the period (T) of the transmitted pulse signal, the preset width (T) of the pulse signal and the like are calculated and determined by referring to the related principles.
In the discharging process of the energy storage circuit, the power consumption of the external interface unit is assumed to be unchanged, and the discharging process has the following expression:
0.5C(U max -U min ) 2 ＝P(T-t) (1)
deducing the capacitance capacity of the energy storage circuit as follows:
C＝2P(T-t)/(U max -U min ) 2 (2)
as can be seen from the formula (2), when the maximum input voltage U is allowed to the external interface unit max Minimum input voltage U min After the power consumption P and the period (T) of the transmitted pulse signal are determined, the capacitance value (C) required by the energy storage circuit can be determined.
The power supply voltage of the power supply of the embodiment of the disclosure is the same as the maximum value of the allowable power supply voltage range of the external interface unit, namely, the power supply voltage=u max In the process of charging the energy storage circuit, the voltage U at two ends of the capacitor c And a power supply voltage U max The relation of (2) is:
U c ＝U max (1-e (-t/RC) ) (3)
wherein, the time constant tau=RC, R represents the equivalent resistance of a current limiting unit connected with the energy storage circuit, one end of the current limiting unit is connected with the energy storage circuit, and the other end is grounded; when t=0: u (U) c | t＝0 ＝U max (1-e (-t/RC) ) =0, when t=4τ: u (U) c | t＝4τ ＝U max (1-e (-4τ/τ) )≈0.9817U max ≈U max ；
As can be seen from the above process, when time t=4τ, the charging process of the capacitor is substantially finished, in other words, the tank capacitor is fully charged after the charging for 4τ. The width t=4τ=4rc of the pulse signal of the charge control can be obtained based on the above analysis.
In an exemplary embodiment, the pulse signal sent by the main control unit of the embodiment of the disclosure is generally a positive pulse signal, and after the period T of sending the pulse signal is determined, the capacitance value (C) and the pulse width T of the energy storage circuit can be determined by referring to the related technology; the main control unit outputs a periodic pulse signal meeting the time sequence requirement according to the sending period T and the pulse width T of the pulse signal, and the periodic pulse signal is used for driving the relay control unit to work so as to control the energy storage circuit to realize periodic charge and discharge.
In an exemplary embodiment, the relay control unit of the embodiment of the present disclosure is used as a relay for transmitting the charging control pulse signal, for improving the driving capability of the pulse signal, and simultaneously protecting the main control unit from the relay action. Alternatively, the relay control unit may be any one of the following: data buffers, optocouplers, and magnetic spacers, etc.
Fig. 4 is a process flow chart of an application example of the present application, as shown in fig. 4, the main control unit circularly sends a positive pulse signal with a pulse width T to the relay control unit with T as a period; the relay control unit controls the power relay contact to be closed under the drive of the positive pulse signal, at the moment, the power supply link of the power supply is conducted, the capacitor C of the back-end energy storage circuit is charged, and meanwhile, the external interface unit is powered. The positive pulse signal disappears after the duration t, the power relay contact is automatically disconnected, at the moment, the power supply link of the power supply is disconnected, and the energy storage circuit supplies power for the external interface unit. When the main control unit detects that the equipment fails or the main control unit fails, the main control unit stops outputting pulse signals, the relay control unit does not input positive pulse signals, the power relay is stopped to be driven to work, the power relay contact is in a normally open state, and a capacitor C in the energy storage circuit is not charged; with the continuous discharge of the capacitor in the energy storage circuit, the voltage difference between the two ends of the capacitor is continuously reduced, and when the voltage difference is reduced to the minimum working voltage U of the external interface unit min And after that, the external interface unit is powered off, the equipment is automatically off-line, and the electrical connection with the whole system is disconnected.
Those of ordinary skill in the art will appreciate that all or some of the steps, systems, functional modules/units in the apparatus, and methods disclosed above may be implemented as software, firmware, hardware, and suitable combinations thereof. In a hardware implementation, the division between the functional modules/units mentioned in the above description does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be performed cooperatively by several physical components. Some or all of the components may be implemented as software executed by a processor, such as a digital signal processor or microprocessor, or as hardware, or as an integrated circuit, such as an application specific integrated circuit. Such software may be distributed on computer readable media, which may include computer storage media (or non-transitory media) and communication media (or transitory media). The term computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data, as known to those skilled in the art. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technology, CD-ROM, digital Versatile Disks (DVD) or other optical disk storage, magnetic cassettes, magnetic tape, magnetic disk storage or other magnetic storage devices, or any other medium which can be used to store the desired information and which can be accessed by a computer. Furthermore, as is well known to those of ordinary skill in the art, communication media typically embodies computer readable instructions, data structures, program modules or other data in a modulated data signal such as a carrier wave or other transport mechanism and includes any information delivery media.
Claims (10)
1. An apparatus for implementing fault detection processing, comprising: the system comprises a main control unit, a relay control unit and more than one group of power relays and energy storage circuits, wherein each group of power relays and energy storage circuits are connected with a predetermined device which needs fault detection processing; wherein,
the main control unit is set as follows: for each device, determining whether to output a pulse signal with a preset width to a relay control unit according to a preset period according to whether the device fault is detected;
the relay control unit is provided with: according to whether a pulse signal is received or not, controlling the power relay to execute contact closing and opening processing;
the power relay is set as: when the contacts are closed, the power supply is used for supplying power to the equipment, and the energy storage circuit connected with the power relay is charged through the power supply;
the energy storage circuit is arranged as follows: when the power relay contacts are opened, the power is supplied to the device for the rest of the period except for charging.
2. The apparatus of claim 1, wherein the master control unit is configured to:
outputting the pulse signal to a relay control unit according to the period when no equipment fault is detected for each piece of equipment; and stopping outputting the pulse signal to the relay control unit when the equipment failure is detected.
3. The apparatus of claim 1, wherein the master control unit is further configured to:
and stopping outputting the pulse signal to the relay control unit when the self-failure is detected.
4. The device according to claim 1, characterized in that the relay control unit is constituted by elements of any of the following classes:
a data buffer, a photo coupler and a magnetic separator.
5. The apparatus of any one of claims 1-4, wherein the capacitance of the tank circuit is expressed as:
C＝2P(T-t)/(U max -U min ) 2 ；
wherein U is min ～U max Representing the operating voltage range of the device, T being the period, T, of the transmission of the pulse signalIs the width of the pulse signal.
6. The apparatus of claim 5, wherein each of the power relay and the tank circuit is further connected to a current limiting unit, and two ends of the current limiting unit are respectively connected to the tank circuit and the ground, and are configured to: and current limiting is performed in the charging process of the energy storage circuit.
7. The device according to claim 6, wherein the flow limiting unit consists of any one of the following types of elements:
resistance, inductance, or a component having a current limiting function composed of two or more components.
8. The apparatus of claim 6, wherein the pulse signal has a width that satisfies: t=4τ=4rc;
wherein C is the capacitance of the energy storage circuit, and R is the equivalent resistance of the current limiting unit.
9. The method for realizing fault detection processing is provided with more than one group of power relays and energy storage circuits in advance, each group of power relays and energy storage circuits are connected with a device needing fault detection processing, and the method comprises the following steps of:
determining whether to output a pulse signal with a preset width to the relay control unit according to a preset period according to whether the equipment fault is detected, so that the relay control unit controls the power relay to execute contact closing and opening processing according to whether the pulse signal is received;
when the contacts of the power relay are closed, the power supply is used for supplying power to the equipment, and meanwhile, the energy storage circuit connected with the power relay is charged through the power supply;
when the power relay contacts are opened, the power is supplied to the device for the rest of the period except for charging.
10. The method of claim 9, wherein the pulse signal has a width that satisfies: t=4τ=4rc;
wherein C is the capacitance of the energy storage circuit, and R is the equivalent resistance of the current limiting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310926869.8A CN117080992A (en) | 2023-07-26 | 2023-07-26 | Method and device for realizing fault detection processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310926869.8A CN117080992A (en) | 2023-07-26 | 2023-07-26 | Method and device for realizing fault detection processing |
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| CN117080992A true CN117080992A (en) | 2023-11-17 |
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| CN202310926869.8A Pending CN117080992A (en) | 2023-07-26 | 2023-07-26 | Method and device for realizing fault detection processing |
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- 2023-07-26 CN CN202310926869.8A patent/CN117080992A/en active Pending
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