CN110412403B - Nuclear safety level system general input/output port dynamic diagnosis circuit and method - Google Patents
Nuclear safety level system general input/output port dynamic diagnosis circuit and method Download PDFInfo
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Abstract
The invention discloses a dynamic diagnosis circuit and a method for a universal input/output port of a nuclear safety level system, wherein the dynamic diagnosis circuit comprises a pull-up resistor R1 for determining a level value when an input high-resistance state is provided, an input filter circuit, an alternating current capacitor C2, a rectifier diode D1, a triode Q1, a circuit for providing dynamic diagnosis of a triode base voltage pull-down resistor R3 and an output circuit, a dynamic change frequency signal and a fixed level signal of the universal input/output port are identified, and the monitoring of the self state of the universal input/output port is completed while the fault output and the non-fault state output are completed; the invention overcomes the defect that the fault of the universal input/output port can not be diagnosed when the universal input/output port is used for carrying out contact signal output in the prior art, ensures that the preset output function is finished when the output is required, and can effectively improve the reliability and the usability of the system.
Description
Technical Field
The invention relates to the technical field of diagnosis of a safety-level digital instrument control system of a nuclear power plant, in particular to a circuit and a method for dynamically diagnosing a general input/output port of a nuclear safety-level system.
Background
With the increasing digitalization degree of the instrument control system of the nuclear power plant and the increasing requirements on reliability and safety, the diagnostic technology is more and more widely applied to the protection system of the nuclear power plant. For diagnosing fault signals, the signals are generally output through a communication uploading or local hardware dry contact.
For a hardware dry contact output mode, a general input/output port is basically adopted to control the on-off of a dry contact in a high-low level mode at present. Similar control modes have the defect that diagnosis cannot be completed aiming at the self fault of the universal input/output port, so that the fault output function cannot be completed when fault output is needed, and the module fault cannot be found in time.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a dynamic diagnostic circuit and a dynamic diagnostic method for a universal input/output port of a nuclear security level system, which solve the problems. The invention overcomes the defect that the general input/output port is invariable high, invariable low or invariable high resistance state can not be detected by the system after being damaged, ensures that the preset output is finished when the fault output is required, and can effectively improve the reliability and the availability of the system.
The invention is realized by the following technical scheme:
the universal input/output port dynamic diagnostic circuit for the nuclear safety level system comprises a pull-up resistor R1 for determining a level value when an input high-resistance state is provided, an input filter circuit, an alternating current capacitor C2, a rectifier diode D1, a triode Q1, a pull-down resistor R3 for providing triode base voltage and an output circuit; the universal input/output port inputs signals through the input port FaultIn of the circuit, the input signals sequentially pass through the input filter circuit, the alternating current capacitor C2, the rectifier circuit, the triode Q1 and the output circuit, and the signals are output through the output port faulout of the circuit.
The invention identifies the dynamic change frequency signal and the fixed level signal of the general input/output port through the hardware circuit, and completes the monitoring of the self state of the general input/output port while completing the fault output or the non-fault output.
Preferably, the input filter circuit is a low-pass filter circuit, and includes a resistor R2 and a capacitor C1.
Preferably, the output circuit comprises a resistor R4 and a capacitor C3, and the resistor R4 and the capacitor C3 are sequentially connected in series between the power supply and the ground terminal.
Preferably, the pull-up resistor R1, the resistor R2 and the capacitor C1 are connected in series between the power supply and the ground terminal in sequence; the input port FaultIn is arranged at the common connection end of the pull-up resistor R1 and the resistor R2; one end of the alternating current capacitor C2 is connected to the common connection end of the resistor R2 and the capacitor C1, and the other end of the alternating current capacitor C2 is connected to the base level of the triode Q1; the rectifier diode D1 and the pull-down resistor R3 are sequentially connected in parallel between the common connection end of the capacitor and the triode Q1 and the ground end; the emitter of the triode Q1 is grounded; the collector of the triode Q1 is connected to the common connection end of the resistor R4 and the capacitor C3; and the output port FaultOut is provided at the common connection of resistor R4 and capacitor C3.
Preferably, the circuit further comprises a contact device, wherein the contact device is controlled according to a signal output by the output port FaultOut, and the circuit is isolated.
Preferably, the contact device is a relay.
Preferably, the input filter circuit has a cutoff frequency greater than the frequency of the input port FaultIn input signal.
Preferably, the cutoff frequency of the alternating current capacitor is smaller than the frequency of the input signal of the input port FaultIn.
The invention also provides a dynamic diagnosis method for the general input/output port of the nuclear safety level system, which realizes the identification of fault output or non-fault output through the dynamic diagnosis circuit.
Preferably, when the input port FaultIn inputs a dynamic signal with fixed frequency and amplitude exceeding 1V, the output port faulout outputs a fixed low level signal, and the signal is identified as non-fault output; when the input port FaultIn inputs a high-level signal, a low-level signal or a high-resistance signal, the output port faulout outputs a fixed high-level signal, and the fault output is identified.
The invention has the following advantages and beneficial effects:
1. compared with the prior art, the invention utilizes the hardware circuit, distinguishes the non-fault output state and the fault output state of the system by using the input port to input the dynamic signal with fixed frequency and the amplitude exceeding 1V and the logic level value of the output signal of the circuit when any other constant state (constant high, constant low or high resistance state) is input, and realizes the self-diagnosis function of the universal input/output port; the invention overcomes the defect that the general input/output port is constant in high, low or high resistance state after being damaged and can not be detected by the system, ensures that the preset output is finished when the fault output is needed, and can effectively improve the reliability and the availability of the system.
2. The invention can be applied to all modules which use the universal input/output port to control the output and the input of the contact in the safety-level DCS platform of the nuclear power plant, has the advantages of simplicity and low cost, and can effectively improve the reliability and the usability of the system.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic circuit diagram of the present invention.
Detailed Description
Hereinafter, the term "comprising" or "may include" used in various embodiments of the present invention indicates the presence of the invented function, operation or element, and does not limit the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to mean that the specified features, numbers, steps, operations, elements, components, or combinations of the foregoing, are only meant to indicate that a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the existence of, or adding to the possibility of, one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.
Expressions (such as "first", "second", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements described. The foregoing description is for the purpose of distinguishing one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. In contrast, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their contextual meaning in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Example 1
The embodiment provides a nuclear power plant safety level system general input/output port dynamic diagnosis circuit, which solves the problem that the diagnosis cannot be completed by the current control mode aiming at the self fault of the general input/output port, and identifies the dynamic change frequency signal and the fixed level signal of the general input/output port through a hardware circuit, so that the self state monitoring of the general input/output port is completed while the fault output and the non-fault state output are completed.
In the embodiment, a pull-up resistor R1 for determining a level value when an input high-resistance state is provided, an input filter circuit, an alternating current capacitor C2, a rectifier diode D1, a triode Q1 and a circuit for providing dynamic diagnosis of a base voltage pull-down resistor R3 and an output circuit of the triode are arranged, a dynamic change frequency signal and a fixed level signal of a universal input/output port are identified, and the monitoring of the self state of the universal input/output port is completed while fault output and non-fault state output are completed; the invention overcomes the defect that the fault of the universal input/output port can not be diagnosed when the universal input/output port is used for carrying out contact signal output in the prior art, ensures that the preset output function is finished when the output is required, and can effectively improve the reliability and the usability of the system.
The dynamic diagnostic circuit for the general input/output port of the nuclear security level system of the embodiment is shown in fig. 1.
The diagnosis circuit comprises a pull-up resistor R1 for determining a level value when an input high-resistance state is provided, an input filter circuit, an alternating current capacitor C2, a rectifier diode D1, a triode Q1, a pull-down resistor R3 for providing triode base voltage and an output circuit; the universal input/output port inputs signals through the input port FaultIn of the circuit, the input signals sequentially pass through the input filter circuit, the alternating current capacitor C2, the rectifier circuit, the triode Q1 and the output circuit, and the signals are output through the output port faulout of the circuit.
In the present embodiment, the pull-up resistor R1 is used to determine a level value when the input signal is in a high-impedance state.
In this embodiment, the pull-down resistor R3 mainly plays two roles; firstly, the pull-down resistor R3 and the pull-down resistor C2 form a high-pass filter circuit for passing an alternating current signal; second, the pull-down resistor R3 is used to provide a stable level for the base of the transistor Q1 when the input signal is in a constant high, constant low and high impedance state.
In this embodiment, the input filter circuit is a low-pass filter circuit, and includes a resistor R2 and a capacitor C1.
Specifically, in order to improve the reliability and safety of diagnosis, the input filter circuit is used for low-pass filtering the input signal; and the cut-off frequency of the input filter circuit is greater than the frequency of the input signal of the input port FaultIn.
In this embodiment, the ac capacitor C2 is used to isolate the dc signal, and pass the ac signal; the cut-off frequency of the alternating current capacitor C2 is smaller than the frequency of the input signal of the input port FaultIn.
In the present embodiment, the rectifying diode D1 is used for rectifying the ac signal passing through the ac capacitor C2 into a dc signal.
In this embodiment, the output circuit includes a resistor R4 and a capacitor C3, and the resistor R4 and the capacitor C3 are connected in series between the power supply and the ground in sequence.
In the embodiment, the pull-up resistor R1, the resistor R2 and the capacitor C1 are connected in series between the power supply and the ground terminal in sequence; the input port FaultIn is arranged at the common connection end of the pull-up resistor R1 and the resistor R2; one end of the alternating current capacitor C2 is connected to the common connection end of the resistor R2 and the capacitor C1, and the other end of the alternating current capacitor C2 is connected to the base level of the triode Q1; the rectifier diode D1 and the pull-down resistor R3 are sequentially connected in parallel between the common connection end of the capacitor and the triode Q1 and the ground end; the emitter of the triode Q1 is grounded; the collector of the triode Q1 is connected to the common connection end of the resistor R4 and the capacitor C3; and the output port FaultOut is provided at the common connection of resistor R4 and capacitor C3.
The diagnostic circuit of the present embodiment further includes a resistor R5, and the resistor R5 is disposed between the emitter of the transistor Q1 and the ground. The resistor R5 is used to adjust the level of the output signal.
Example 2
This embodiment differs from embodiment 1 described above only in that: the dynamic diagnosis circuit for the general input/output port of the nuclear power plant safety level system further comprises a contact device, and the circuit is isolated by the contact device, so that interference of other faults to the system is prevented, and the reliability and the safety of the system are improved.
In this embodiment, the contact device is controlled according to the signal output from the output port FaultOut, and the circuit is isolated.
In another preferred embodiment, the contact device is a relay, such as a PhotoMos or solid state relay.
Example 3
Based on the above embodiments, the present embodiment provides a method for dynamically diagnosing a general input/output port of a nuclear security class system, and a diagnostic circuit provided by the above embodiments identifies a faulty output or a non-faulty output.
In this embodiment, when the input port FaultIn inputs a dynamic signal with a fixed frequency and an amplitude exceeding 1V, the output port faulout outputs a fixed low level signal, and the signal is identified as a non-fault output; when the input port FaultIn inputs a high-level signal, a low-level signal or a high-resistance signal, the output port faulout outputs a fixed high-level signal, and the fault output is identified.
In this embodiment, the hardware diagnostic circuit provided in the above embodiment is used to implement the method, and the test determines that, in the dynamic diagnostic circuit for the universal input/output port of the safety level system of the nuclear power plant:
a pull-up resistor R1 is provided to determine the level when a high impedance state is input, which in this embodiment is 100k omega.
The input filter circuits R2 and C1, in this embodiment, the resistor R2 takes the value of 470 Ω, and the capacitor C1 takes the value of 0.1 μ F.
The value of the ac capacitor C2 is 0.1 μ F in this embodiment.
A pull-down resistor R3 is provided, which in this embodiment takes the value of 5.1k Ω.
Output circuits R4 and C3, in this embodiment, the value of the resistor R4 is 100k Ω; the capacitance C3 takes the value 1 μ F.
In the diagnostic circuit, VCC is a system operating power supply, and in this embodiment, the value is + 3.3V.
The FaultIn is used as an input port of the embodiment and is controlled by a general input/output port, the FaultOut is used as an output port of the embodiment, and the output signal is used for controlling contact devices such as a relay (PhotoMOS).
When the system normally operates (when non-fault output is carried out), a square wave signal with the frequency of 2kHz, the high level amplitude of 3.3V, the low level amplitude of 0V and the duty ratio of 50 percent is input into the FaultIn through the universal input/output port, and the FaultOut outputs a low level signal to control a post-stage contact device.
When the system has a fault (carries out fault output) or the universal input/output port has a fault and cannot output the square wave signal, the FaultIn input is a high-level or low-level or high-resistance signal, and the faulout outputs a fixed high-level signal for controlling a rear-stage contact device.
By the embodiment, the indication of normal operation and abnormal operation of the system can be finished, and the diagnosis of the state of the universal input/output port can also be finished.
In the embodiment, a pull-up resistor R1 for determining a level value when an input high-resistance state is provided, an input filter circuit, an alternating current capacitor C2, a rectifier diode D1, a triode Q1 and a circuit for providing dynamic diagnosis of a base voltage pull-down resistor R3 and an output circuit of the triode are arranged, a dynamic change frequency signal and a fixed level signal of a universal input/output port are identified, and the monitoring of the self state of the universal input/output port is completed while fault output and non-fault state output are completed; the embodiment overcomes the defect that the general input/output port is constant high, constant low or constant high-resistance state after being damaged and cannot be detected by a system, ensures that the preset output is finished when fault output is required, and can effectively improve the reliability and the availability of the system.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The dynamic diagnostic circuit of the universal input/output port of the nuclear safety level system is characterized by comprising a pull-up resistor R1 for determining a level value when an input high-resistance state is provided, an input filter circuit, an alternating current capacitor C2, a rectifier diode D1, a triode Q1, a pull-down resistor R3 for providing triode base voltage and an output circuit; the universal input/output port inputs signals through the circuit input port FaultIn, the input signals sequentially pass through the input filter circuit, the alternating current capacitor C2, the rectifier diode D1, the triode Q1 and the output circuit, and the signals are output through the circuit output port faulout; the input filter circuit is a low-pass filter circuit and comprises a resistor R2 and a capacitor C1; the output circuit comprises a resistor R4 and a capacitor C3, and the resistor R4 and the capacitor C3 are sequentially connected in series between a power supply and a ground terminal; the pull-up resistor R1, the resistor R2 and the capacitor C1 are sequentially connected in series between a power supply and a ground terminal; the input port FaultIn is arranged at the common connection end of the pull-up resistor R1 and the resistor R2; one end of the alternating current capacitor C2 is connected to the common connection end of the resistor R2 and the capacitor C1, and the other end of the alternating current capacitor C2 is connected to the base level of the triode Q1; the rectifier diode D1 and the pull-down resistor R3 are sequentially connected in parallel between the common connection end of the alternating current capacitor C2 and the triode Q1 and the ground end; the emitter of the triode Q1 is grounded; the collector of the triode Q1 is connected to the common connection end of the resistor R4 and the capacitor C3; and the output port FaultOut is provided at the common connection of resistor R4 and capacitor C3.
2. The nuclear power plant gpio port dynamic diagnostic circuit of claim 1 further comprising a contact device that is controlled and isolated based on a signal output from the fault out port.
3. The nuclear safety level system general purpose input/output port dynamic diagnostic circuit as recited in claim 2, wherein the contact device is a relay.
4. The nuclear safety level system general purpose input-output port dynamic diagnostic circuit of claim 1, wherein a cutoff frequency of the input filter circuit is greater than a frequency of an input port FaultIn input signal.
5. The nuclear safety level system gpio port dynamic diagnostic circuit of claim 1, wherein a cutoff frequency of the ac capacitor is less than a frequency of an input port FaultIn input signal.
6. A method for dynamically diagnosing a general input/output port of a nuclear safety level system, which is characterized in that the method identifies a fault output or a non-fault output through a dynamic diagnosis circuit of any one of claims 1 to 5.
7. The method of claim 6, wherein when the input port FaultIn inputs a dynamic signal having a fixed frequency and an amplitude exceeding 1V, the output port faulout outputs a fixed low level signal, which is identified as a non-fault output; when the input port FaultIn inputs a high-level signal, a low-level signal or a high-resistance signal, the output port faulout outputs a fixed high-level signal, and the fault output is identified.
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08327697A (en) * | 1995-05-30 | 1996-12-13 | Hitachi Ltd | General purpose jig for ict |
| CN101349726A (en) * | 2007-07-17 | 2009-01-21 | 大唐移动通信设备有限公司 | Method and apparatus for malfunction detection of general-purpose input/output interface |
| CN102970012A (en) * | 2012-11-22 | 2013-03-13 | 中国船舶重工集团公司第七一一研究所 | On-off output module with diagnosing function |
| CN204065301U (en) * | 2014-07-17 | 2014-12-31 | 珠海西默电气科技有限公司 | A kind of power distribution cabinet input/output port pick-up unit |
| CN104297619A (en) * | 2014-10-13 | 2015-01-21 | 上海移为通信技术有限公司 | Testing device for chip input and output pin |
| CN105092998A (en) * | 2014-05-19 | 2015-11-25 | 华为技术有限公司 | Interface detection circuit, device and method |
| CN205861835U (en) * | 2016-08-10 | 2017-01-04 | 深圳市赋安安全系统有限公司 | A kind of line status testing circuit |
| CN108270482A (en) * | 2017-12-21 | 2018-07-10 | 瑞斯康达科技发展股份有限公司 | A kind of port testing method and system |
| CN109062169A (en) * | 2018-10-10 | 2018-12-21 | 中国核动力研究设计院 | A kind of the on-off model acquisition system and its acquisition method of high reliability |
| CN110031754A (en) * | 2019-04-16 | 2019-07-19 | 江铃汽车股份有限公司 | Detection device, detection method and the electric car of high-voltage relay electric shock state |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6798209B2 (en) * | 2002-01-17 | 2004-09-28 | General Electric Company | Circuit breaker with integral testing unit |
| US7031868B2 (en) * | 2003-09-15 | 2006-04-18 | Rambus, Inc. | Method and apparatus for performing testing of interconnections |
| US8855962B2 (en) * | 2012-02-22 | 2014-10-07 | Freescale Semiconductor, Inc. | System for testing electronic circuits |
| CN203572943U (en) * | 2013-09-25 | 2014-04-30 | 深圳市共进电子股份有限公司 | DC-DC circuit output failure detection circuit |
-
2019
- 2019-08-07 CN CN201910724268.2A patent/CN110412403B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08327697A (en) * | 1995-05-30 | 1996-12-13 | Hitachi Ltd | General purpose jig for ict |
| CN101349726A (en) * | 2007-07-17 | 2009-01-21 | 大唐移动通信设备有限公司 | Method and apparatus for malfunction detection of general-purpose input/output interface |
| CN102970012A (en) * | 2012-11-22 | 2013-03-13 | 中国船舶重工集团公司第七一一研究所 | On-off output module with diagnosing function |
| CN105092998A (en) * | 2014-05-19 | 2015-11-25 | 华为技术有限公司 | Interface detection circuit, device and method |
| CN204065301U (en) * | 2014-07-17 | 2014-12-31 | 珠海西默电气科技有限公司 | A kind of power distribution cabinet input/output port pick-up unit |
| CN104297619A (en) * | 2014-10-13 | 2015-01-21 | 上海移为通信技术有限公司 | Testing device for chip input and output pin |
| CN205861835U (en) * | 2016-08-10 | 2017-01-04 | 深圳市赋安安全系统有限公司 | A kind of line status testing circuit |
| CN108270482A (en) * | 2017-12-21 | 2018-07-10 | 瑞斯康达科技发展股份有限公司 | A kind of port testing method and system |
| CN109062169A (en) * | 2018-10-10 | 2018-12-21 | 中国核动力研究设计院 | A kind of the on-off model acquisition system and its acquisition method of high reliability |
| CN110031754A (en) * | 2019-04-16 | 2019-07-19 | 江铃汽车股份有限公司 | Detection device, detection method and the electric car of high-voltage relay electric shock state |
Non-Patent Citations (2)
| Title |
|---|
| Model Based Fault Detection and Diagnosis Using Structured Residual Approach in a Multi-Input Multi-Output System;A. Asokan et.al;《SERBIAN JOURNAL OF ELECTRICAL ENGINEERING》;20071130;第4卷(第2期);第133-145页 * |
| 转子式微陀螺ASIC接口检测电路设计;王頔;《中国优秀硕士学位论文全文数据库 信息科技辑》;20170228;I136-2162 * |
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