CN206038745U - Fault detection and take care of system based on gate circuit and CPLD - Google Patents
Fault detection and take care of system based on gate circuit and CPLD Download PDFInfo
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- CN206038745U CN206038745U CN201621022031.8U CN201621022031U CN206038745U CN 206038745 U CN206038745 U CN 206038745U CN 201621022031 U CN201621022031 U CN 201621022031U CN 206038745 U CN206038745 U CN 206038745U
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Abstract
The utility model relates to a fault detection and take care of system based on gate circuit and CPLD, simple structure, convenient to use, the reliability is high, satisfies multiple equipment requirement, and adaptability is wide. It includes: the signal collection circuit module, it includes a plurality of sampling circuit that are used for gathering fault -signal, the part sampling circuit be connected with being used for the signal comparison circuit module who detects fault -signal, and another part sampling circuit and logical circuit module are connected, the logic circuit module for the fault -signal with signal comparison circuit module produces to the collection of signal collection circuit module handles respectively in order to export comprehensive fault -signal, the combinational logic circuit module is connected and is handled the total fault -signal of output through latching with the different fault -signal of synthesis that the logic circuit module was exported with the logic circuit module, CPLD control circuit module is connected with combinational logic circuit module and signal comparison circuit module for receive the fault -signal of total fault -signal and production, and carry out the analysis to the signal.
Description
Technical field
This utility model is related to power system and power electronics and power drives technology, it is specially a kind of based on gate circuit and
The fault detect of CPLD and conditioning system.
Background technology
With the development of Power Electronic Technique, and to energy storage and the raising of recycling requirement.These cause electric power
Electronic equipment is put forward higher requirement for the Treatment Stability of the signals such as electric current, voltage, believes simultaneously for the failure of equipment
Number process demand also more and more higher.This is mainly reflected in for the status display after each signal sampling, fault alarm, failure lock
Deposit and the process to signal in terms of.
For the problems referred to above, mainly there are two kinds of main solutions at present.A kind of is using pure hardware circuit；Separately
A kind of is, by the signal input single-chip microcomputer or CPLD of sampling, to be judged by the logic of software.
The sampling failure detector circuit constituted based on pure hardware circuit is generally comprised signal sampling amplifying circuit signal and is compared
Circuit module, failure produce circuit and translation circuit composition.And utilize the detection circuit of single-chip microcomputer or DSP to be usually then used soft
Logical analyses in part judge to produce fault-signal to be detected.
Fault detection signal conditioning device based on hardware circuit cannot just change once circuit determination, can only detect specific
Signal fault.And due to being to determine the circuit of function, cannot typically extend, it is impossible to the detection signal outside receiving, significantly
Reduce the motility of detection means, it is impossible to meet plurality of devices demand.
And the single-chip microcomputer or DSP based on software, it is not modular circuit, the bad investigation when detection is broken down,
Reliability is relatively low.And that what is developed and safeguard is relatively costly.
Utility model content
For problems of the prior art, this utility model provides a kind of fault detect based on gate circuit and CPLD
And conditioning system, simple structure is easy to use, and reliability is high, additionally it is possible to meet plurality of devices demand, wide adaptability.
This utility model is to be achieved through the following technical solutions：
A kind of fault detect and conditioning system based on gate circuit and CPLD, including：
Signal sample circuit module, which includes multiple sample circuits for gathering fault-signal；Fractional-sample circuit with
For detecting that the signal comparator circuit module of fault-signal connects, another part sample circuit is connected with application of logic circuit module；
Application of logic circuit module, for the failure that gather to signal sample circuit module and signal comparator circuit module is produced
Signal is respectively processed with output integrated fault-signal；
Combinational logic circuit module, the different resultant faults for connecting from application of logic circuit module and application of logic circuit module being exported
Signal is processed, and exports latched total failare signal；
CPLD control circuit modules, are connected with combinational logic circuit module and signal comparator circuit module, total for receiving
Fault-signal and the fault-signal for producing, and signal is analyzed.
Preferably, the signal sample circuit module includes：Voltage sampling circuit unit, current sampling circuit unit, temperature
Degree failure detector circuit unit and driving malfunction input circuit unit；
Voltage sampling circuit unit and current sampling circuit unit are respectively connecting to signal comparator circuit module, temperature fault
Detection circuit unit and driving malfunction input circuit unit are respectively connecting to application of logic circuit module.
Further, voltage sampling circuit unit, current sampling circuit unit, temperature fault detection circuit unit and driving event
Barrier input circuit unit is extendible signal sample circuit module.
Further, it is provided with voltage sampling circuit unit for the Hall element of voltage sample and at signal
The operational amplifier of reason, feedback resistance and positive electrode resistance；Current sampling circuit unit be provided with operational amplifier, feedback resistance and
Positive electrode resistance；After the electric current and voltage signal of collection are respectively through operational amplifier, by feedback resistance and the ratio of positive electrode resistance
It is worth voltage signal and current signal conditioning to the signal processed for hardware gate circuit or CPLD.
Further, the temperature fault detection circuit unit is provided with photoelectrical coupler and pull-up resistor；Temperature fault is examined
The outside NTC of slowdown monitoring circuit unit connection or temperature switch input signal, produce more than setting through photoelectrical coupler and pull-up resistor
The temperature fault signal of temperature.
Further, the application of logic circuit module includes first for being connected and gate circuit unit and the first tri-state gate circuit list
Unit；Described first detects circuit unit and driving malfunction with signal comparator circuit module, temperature fault respectively with gate circuit unit
Input circuit unit connects, and the first tri-state gate circuit unit is connected with combinational logic circuit module.
Preferably, CPLD control circuit modules include：For perform send out ripple or signal locking pulse instruction CPLD chips,
Malfunction indicator lamp and the logical signal to being input into carry out the level shifting circuit unit of level conversion；Malfunction indicator lamp and level turn
Change circuit unit to be connected with CPLD chips respectively；
Combinational logic circuit module is connected to level shifting circuit unit；CPLD control circuit modules are circumscribed with driving wiring
Terminal or optical fiber, are connected with the single-chip microcomputer or DSP that send Fa Bo or the instruction of signal locking pulse by bus.
Preferably, comparator and adjustable resistance are provided with signal comparator circuit module；Comparator according to adjustable resistance and
The alarm threshold value of partial fault signal correspondence bias voltage produces fault-signal.
Preferably, combinational logic circuit module includes being connected fault latch circuit unit, second and gate circuit unit
With the second tri-state gate circuit unit.
Further, fault latch circuit unit includes the RS latch for latching resultant fault signal.
Compared with prior art, this utility model has following beneficial technique effect：
A kind of fault detect and conditioning system based on gate circuit and CPLD of this utility model, is employed in design simultaneously
Hardware logic electric circuit module and CPLD are combined, can be to needing the current and voltage signals for detecting to carry out failure in power electronic equipment
Detection and signal condition, while meeting different device requirements, and strengthen reliability.
Description of the drawings
Fig. 1 is a kind of fault detect and conditioning system based on gate circuit and CPLD described in this utility model example
Structural representation.
During Fig. 2 is a kind of fault detect and conditioning system based on gate circuit and CPLD described in this utility model example
The circuit diagram of fault latch circuit unit.
Specific embodiment
Below in conjunction with the accompanying drawings this utility model is described in further detail, it is described be to it is of the present utility model explanation and
It is not to limit.
As shown in figure 1, being a kind of fault detect based on gate circuit and CPLD and conditioning system according to this utility model, wrap
Include：
Signal sample circuit module, including multiple sample circuits for gathering fault-signal；
Fractional-sample circuit in the signal sample circuit module and the signal comparator circuit for detecting fault-signal
Module connects, and another part sample circuit is connected with application of logic circuit module；
The application of logic circuit module, for the signal sample circuit module and the collection of signal comparator circuit module and product
Raw fault-signal carries out integrated treatment respectively with the fault-signal of output integrated；
Combinational logic circuit module, from the application of logic circuit module connect and by the application of logic circuit module export it is different
Resultant fault signal carries out integrated treatment, exports total failare signal；
CPLD control circuit modules, are connected with the combinational logic circuit module and the signal comparator circuit module, are used
In the fault-signal for receiving the total failare signal and the generation, and signal is analyzed.
Wherein, comparator and adjustable resistance are connected with the signal comparator circuit module, the comparator can basis
The alarm threshold value of adjustable resistance and bias voltage produces fault-signal, into application of logic circuit module.Signal comparator circuit module quilt
It is configured for by partial fault signal and to corresponding alarm threshold value being compared, determines whether fault-signal, specifically
Collocation method be this area common knowledge, those skilled in the art can be according to prior art arrangement inner parameter.
Signal sample circuit module includes：Voltage sampling circuit unit, current sampling circuit unit, temperature fault detection electricity
Road unit and driving malfunction input circuit unit, they can be extended according to practically necessary number of samples.Wherein, voltage
Hall element for voltage sample, operational amplifier, feedback resistance and positive electrode resistance, and electricity is connected with sample circuit unit
Stream sample circuit unit is connected with operational amplifier, feedback resistance and positive electrode resistance, wherein, merely illustrates Hall element in Fig. 1,
Operational amplifier, feedback resistance and positive electrode resistance are not shown, and voltage sample uses Hall element, electric current and voltage signal to pass through
Operational amplifier, by the ratio of feedback resistance and positive electrode resistance by voltage, current regulating to an appropriate hardware gate circuit
Or the signal that CPLD is processed.Temperature fault signal is passed through by outside NTC or temperature switch input temp failure detector circuit unit
Photoelectrical coupler and pull-up resistor (not shown) produce excess temperature fault-signal；Driving malfunction is then defeated by outside binding post
Enter driving malfunction input circuit unit.It is more electric that voltage sampling circuit unit and current sampling circuit unit are respectively connecting to signal
Road module, signal comparator circuit module are connected to the level shifting circuit list of application of logic circuit module and CPLD control circuit modules
Unit, temperature fault detection circuit unit and driving malfunction input circuit unit are respectively connecting to application of logic circuit module, after conditioning
Voltage or current signal entering signal comparison circuit module, temperature fault signal and driving malfunction signal then enter to be directly entered logic
Circuit module.
The voltage sampling circuit unit and the current sampling circuit unit are respectively connecting to signal comparator circuit module,
The temperature fault detection circuit unit and the driving malfunction input circuit unit are respectively connecting to the application of logic circuit module；
Application of logic circuit module mainly includes first and gate circuit unit and the first tri-state gate circuit unit (not shown),
Fault-signal is respectively processed, first is electric with signal comparator circuit module, temperature fault detection respectively with gate circuit unit
Road unit and the connection of driving malfunction input circuit unit, the first tri-state gate circuit unit are connected with combinational logic circuit module.Its
In, in addition to per specific fault-signal will send into CPLD control circuit modules all the way, both believe voltage and current fault-signal
Number respectively a combination current fault-signal and an integrated voltage fault-signal is generated with two passages first and gate circuit unit.
Temperature and the fault-signal for driving equally also generate an integrated temperature failure using two passages first with gate circuit unit respectively
The combined application of logic circuit module of the comprehensive driving malfunction signal of signal and is processed in sending into CPLD chips.If needing
Will, also can individually enter on demand per temperature and driving malfunction signal all the way.The four road resultant fault signals for generating are through tri-state
Gate circuit unit sends into combinational logic circuit module.
Fault latch circuit unit that combinational logic circuit module includes being connected, second with gate circuit unit and the two or three
State gate circuit unit, as shown in Fig. 2 illustrate only the circuit diagram of fault latch circuit unit.Four road resultant fault signal connections
To the S ends of RS latch, latch R ends are grounded through pull down resistor R5, and the output of Q ends is sent to CPLD chips simultaneously.When upper electric
The R ends of latch are triggered by charging capacitor C1, institute is emptied faulty.When faulty signal comes special meeting triggering S ends, lock immediately
Deposit resultant fault signal.The fault-signal that simultaneously this four road is latched also pass through the second tri-state gate circuit unit and two passages second with
Gate circuit unit generates total failare signal input CPLD chip all the way.Reset switch SW is also passed through with pull-up electricity at latch R ends
Resistance R6 is connected, and uses as reset fault-signal.
CPLD control circuit modules include：Refer to for performing the CPLD chips for sending out ripple or the instruction of signal locking pulse, failure
Show the level shifting circuit unit that lamp and the logic signal levels to input to the CPLD control circuits are changed, malfunction indicator lamp
It is connected with CPLD chips with level shifting circuit unit respectively, combinational logic circuit module is connected to CPLD control circuit modules
Level shifting circuit unit, CPLD control circuit modules are interconnected with controller module by bus and are circumscribed with binding post
Or optical fiber, logic level signal is converted to the accessible level of CPLD chips by level shifting circuit unit.DSP or single-chip microcomputer are logical
Cross bus to be communicated, CPLD chips are responsible for receiving the fault-signal for latching, and perform the operation of drive signal locking pulse.CPLD
Chip internal resource can flexible configuration as desired.In addition the binding post of CPLD chips can also according to different situations come
Configuration, compatible various controller.The CPLD control circuit modules are circumscribed with driving binding post or optical fiber, by bus with
Send single-chip microcomputer or the DSP connections for sending out ripple or the instruction of signal locking pulse.
For a person skilled in the art, technical scheme that can be as described above and design, make other each
Plant corresponding change and deform, and all these changes and deforms the guarantor that should all belong to this utility model claim
Within the scope of shield.
Claims (10)
1. a kind of fault detect and conditioning system based on gate circuit and CPLD, it is characterised in that include：
Signal sample circuit module, which includes multiple sample circuits for gathering fault-signal；Fractional-sample circuit be used for
The signal comparator circuit module connection of detection fault-signal, another part sample circuit are connected with application of logic circuit module；
Application of logic circuit module, for the fault-signal that gather to signal sample circuit module and signal comparator circuit module is produced
It is respectively processed with output integrated fault-signal；
Combinational logic circuit module, the different resultant fault signals for connecting from application of logic circuit module and application of logic circuit module being exported
Processed, exported latched total failare signal；
CPLD control circuit modules, are connected with combinational logic circuit module and signal comparator circuit module, for receiving total failare
Signal and the fault-signal for producing, and signal is analyzed.
2. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 1, it is characterised in that
The signal sample circuit module includes：Voltage sampling circuit unit, current sampling circuit unit, temperature fault detection circuit list
Unit and driving malfunction input circuit unit；
Voltage sampling circuit unit and current sampling circuit unit are respectively connecting to signal comparator circuit module, temperature fault detection
Circuit unit and driving malfunction input circuit unit are respectively connecting to application of logic circuit module.
3. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 2, it is characterised in that：
Voltage sampling circuit unit, current sampling circuit unit, temperature fault detection circuit unit and driving malfunction input circuit unit
It is extendible signal sample circuit module.
4. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 2, it is characterised in that：
Be provided with voltage sampling circuit unit the Hall element for voltage sample and the operational amplifier for signal processing,
Feedback resistance and positive electrode resistance；Current sampling circuit unit is provided with operational amplifier, feedback resistance and positive electrode resistance；Collection
After electric current and voltage signal are respectively through operational amplifier, by the ratio of feedback resistance and positive electrode resistance by voltage signal and electricity
Stream signal condition is to the signal processed for hardware gate circuit or CPLD.
5. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 2, it is characterised in that：
The temperature fault detection circuit unit is provided with photoelectrical coupler and pull-up resistor；Temperature fault detection circuit unit connection is outer
Portion NTC or temperature switch input signal, produce the temperature fault letter more than design temperature through photoelectrical coupler and pull-up resistor
Number.
6. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 2, it is characterised in that：
The application of logic circuit module includes first for being connected and gate circuit unit and the first tri-state gate circuit unit；Described first and door
Circuit unit is connected with signal comparator circuit module, temperature fault detection circuit unit and driving malfunction input circuit unit respectively
Connect, the first tri-state gate circuit unit is connected with combinational logic circuit module.
7. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 1, it is characterised in that
CPLD control circuit modules include：For performing CPLD chips, the malfunction indicator lamp and right of sending out ripple or the instruction of signal locking pulse
The logical signal of input carries out the level shifting circuit unit of level conversion；Malfunction indicator lamp and level shifting circuit unit difference
It is connected with CPLD chips；
Combinational logic circuit module is connected to level shifting circuit unit；CPLD control circuit modules are circumscribed with driving binding post
Or optical fiber, it is connected with the single-chip microcomputer or DSP that send Fa Bo or the instruction of signal locking pulse by bus.
8. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 1, it is characterised in that：
Comparator and adjustable resistance are provided with the signal comparator circuit module；Comparator is according to adjustable resistance and partial fault signal
The alarm threshold value of correspondence bias voltage produces fault-signal.
9. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 1, it is characterised in that：
Fault latch circuit unit that the combinational logic circuit module includes being connected, second with gate circuit unit and the second triple gate
Circuit unit.
10. a kind of fault detect and conditioning system based on gate circuit and CPLD according to claim 9, its feature exist
In：The fault latch circuit unit includes the RS latch for latching resultant fault signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022031.8U CN206038745U (en) | 2016-08-30 | 2016-08-30 | Fault detection and take care of system based on gate circuit and CPLD |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621022031.8U CN206038745U (en) | 2016-08-30 | 2016-08-30 | Fault detection and take care of system based on gate circuit and CPLD |
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| Publication Number | Publication Date |
|---|---|
| CN206038745U true CN206038745U (en) | 2017-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621022031.8U Expired - Fee Related CN206038745U (en) | 2016-08-30 | 2016-08-30 | Fault detection and take care of system based on gate circuit and CPLD |
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| Country | Link |
|---|---|
| CN (1) | CN206038745U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656218A (en) * | 2017-11-06 | 2018-02-02 | 湖北汽车工业学院 | Induction heating power failure detects in real time and processing system |
-
2016
- 2016-08-30 CN CN201621022031.8U patent/CN206038745U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107656218A (en) * | 2017-11-06 | 2018-02-02 | 湖北汽车工业学院 | Induction heating power failure detects in real time and processing system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20200830 |