CN109521323A - A kind of interface circuit on off operating mode detection device and method - Google Patents
A kind of interface circuit on off operating mode detection device and method Download PDFInfo
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- CN109521323A CN109521323A CN201710841393.2A CN201710841393A CN109521323A CN 109521323 A CN109521323 A CN 109521323A CN 201710841393 A CN201710841393 A CN 201710841393A CN 109521323 A CN109521323 A CN 109521323A
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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
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
- G01R31/66—Testing of connections, e.g. of plugs or non-disconnectable joints
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- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
Interface circuit on off operating mode detection device and method, the device include: power supply；Indicating circuit comprising if the identical instruction branch of stem structure, instruction branch includes output head anode and negative pole of output end, and the output head anode and negative pole of output end of indicating circuit are used to connect with two ports for corresponding to conductive branch in tested interface circuit；Wherein, if conductive branch is there are failure, instruction branch corresponding to the conductive branch will export corresponding indication signal；And if failure is not present in conductive branch conductive branch, instruction branch corresponding to the conductive branch will not export indication signal.Compared to existing interface circuit on off operating mode detection device, the circuit structure of the present apparatus is simpler, this also just effectively reduces the cost of detection device, and also contributes to the reliability of detection device.
Description
Technical field
The present invention relates to circuit detection technique fields, specifically, being related to a kind of interface circuit on off operating mode detection device
And method.
Background technique
The disconnection of electronics or electric wiring is one of main forms of the system failure.When number of, lines is less, survey
Amount is easier, for can be solved by using multimeter or electroprobe.And when number of, lines is more, measurement difficulty will be fast
Speed increases, and will expend a large amount of manpower and time cost for the measurement of route.
Typical multiplex roles route includes communication line, highly integrated vehicle control assembly low-voltage circuit, scale building
Power distribution room electric wiring etc..Currently, measurement interface circuit mainly includes two kinds of technical solutions with the presence or absence of open circuit fault.Wherein
One is by the signal output of one end of route connection control circuit board, the signal input of other end connection control circuit plate,
Control circuit is sent signal using single-chip microcontroller, industrial personal computer etc. and receives signal.If control circuit can receive sending
Signal, then then indicating that route is connected to；And if control circuit does not receive the signal of sending, then indicate that route disconnects.
Report etc. can be used to show on-off information in control circuit.Another kind is come using chip controls analog switch or mechanical switch
Switching channel realizes the on-off being input between output interface, and shows whether route is connected using LED or buzzer etc..
The circuit of existing interface circuit measuring device is complex, reliability is low.As test equipment, using secondary
Number is inevitable frequent, and Years Of Service is inevitable very long, therefore the complexity, the lifting means reliability that reduce equipment are critically important.
Summary of the invention
To solve the above problems, the present invention provides a kind of interface circuit on off operating mode detection device, described device includes:
Power supply；
Indicating circuit comprising if the identical instruction branch of stem structure, the instruction branch includes output head anode and defeated
Outlet cathode, the output head anode and negative pole of output end of the indicating circuit are used for and correspond to conductive branch in tested interface circuit
Two ports connection；
Wherein, if conductive branch is there are failure, instruction branch corresponding to the conductive branch will export corresponding
Indication signal；And if failure is not present in conductive branch conductive branch, instruction branch corresponding to the conductive branch will not
Export indication signal.
According to one embodiment of present invention, the first port of the instruction branch is connect with the anode of the power supply,
Second port is connect with the cathode of the power supply, third port respectively with each conductive branch in interface circuit to be measured first
End is correspondingly connected with, and the positive or negative pole of the power supply is also connect with the second end of the interface circuit to be measured.
According to one embodiment of present invention, the instruction branch includes:
Light emitting diode, anode are connect as the first port of the instruction branch with the anode of the power supply；
Current-limiting resistance, one end are connect with the cathode of the light emitting diode, the other end as the instruction branch the
Two-port netwerk is connect with the cathode of the power supply, and the public connecting end of the light emitting diode and current-limiting resistance is as instruction branch
The third port on road is connected with the first end of corresponding conductive branch.
According to one embodiment of present invention, the instruction branch includes:
Current-limiting resistance, one end are connect as the first port of the instruction branch with the anode of the power supply；
Light emitting diode, anode are connect with the other end of the current-limiting resistance, and cathode indicates the of branch as described
Two-port netwerk is connect with the cathode of the power supply, and the public connecting end of the light emitting diode and current-limiting resistance is as instruction branch
The third port on road is connected with the first end of corresponding conductive branch.
According to one embodiment of present invention, described device further include:
Controllable switch is connected between the power supply and indicating circuit, for the power supply and the instruction of being turned on or off
Galvanic circle between circuit.
The present invention also provides a kind of interface circuit on off operating mode detection method, the method is based on described in any one as above
Interface circuit on off operating mode detection device realize comprising:
It is filled Step 1: the both ends of conductive branch each in test line are detected with the interface circuit on off operating mode respectively
The anode and cathode set are correspondingly connected with；
Step 2: the electrical connection between power supply and indicating circuit is connected, according to instruction each in indicating circuit branch
The state on road judges the on off operating mode of corresponding conductive branch.
According to one embodiment of present invention, in the step 2,
If indicating that the light emitting diode in branch is lighted, determine that the corresponding conductive branch of the instruction branch has open circuit
Failure；
If indicating that the light emitting diode in branch is in OFF state, the corresponding conductive branch of instruction branch is determined
There is no open circuit faults.
The present invention also provides a kind of interface circuit on off operating mode detection methods, which is characterized in that the method is based on such as
Described in any item interface circuit on off operating mode detection devices are gone up to realize comprising:
Step 1: by one end of conductive branch to be measured in test line and having determined that the conductive branch there is no open circuit fault
One end connection, an output port of the interface circuit on off operating mode detection device and will have determined that there is no open circuit faults
Conductive branch other end connection, by the another of the conductive branch to be measured and the interface circuit on off operating mode detection device
Output port connection；
Step 2: the electrical connection between power supply and indicating circuit is connected, according to instruction each in indicating circuit branch
The state on road judges the on off operating mode of corresponding conductive branch.
Interface circuit on off operating mode detection device provided by the present embodiment can merely with power supply, light emitting diode and
Current-limiting resistance realizes the detection to interface circuit on off operating mode.Compared to existing interface circuit on off operating mode detection device,
Its circuit structure is obviously simpler, this also just effectively reduces the cost of detection device, and also contributes to detection dress
The reliability set.
Meanwhile when carrying out the detection of interface circuit on off operating mode using the detection device, for only needing interface line
The port of each conductive branch and the corresponding port of the detection device, which are correspondingly connected with, in road can be realized test process, compared to existing
Some methods, which enables to effectively reduce the operating procedure of entire detection process, to improve detection efficiency.
Other features and advantages of the present invention will be illustrated in the following description, also, partly becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by specification, right
Specifically noted structure is achieved and obtained in claim and attached drawing.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is required attached drawing in technical description to do simple introduction:
Fig. 1 is the structural schematic diagram of interface circuit on off operating mode detection device according to an embodiment of the invention；
Fig. 2 is that interface circuit on off operating mode is examined when the length of interface circuit to be measured according to an embodiment of the invention is very long
Survey the circuit connection diagram of device；
Fig. 3 is the structural schematic diagram of interface circuit on off operating mode detection device in accordance with another embodiment of the present invention.
Specific embodiment
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings and examples, how to apply to the present invention whereby
Technological means solves technical problem, and the realization process for reaching technical effect can fully understand and implement.It needs to illustrate
As long as not constituting conflict, each feature in each embodiment and each embodiment in the present invention can be combined with each other,
It is within the scope of the present invention to be formed by technical solution.
Meanwhile in the following description, for illustrative purposes and numerous specific details are set forth, to provide to of the invention real
Apply the thorough understanding of example.It will be apparent, however, to one skilled in the art, that the present invention can not have to tool here
Body details or described ad hoc fashion are implemented.
For the above problem in the presence of the prior art, the present invention provides a kind of new interface circuit on off operating mode inspections
The method surveyed device and the detection of interface circuit on off operating mode is carried out based on the device.Wherein, according to actual needs, above-mentioned interface
Route is also possible to low-voltage circuit either electronic interface board circuit, can also be other routes of such as Electric Wires & Cables.
Fig. 1 shows the structural schematic diagram of the interface circuit on off operating mode detection device in the present embodiment.
As shown in Figure 1, the output head anode and negative pole of output end of detection device 101 provided by the present embodiment respectively with quilt
Survey each conductive branch connection in interface circuit.Specifically, interface circuit on off operating mode detection device 101 includes 201 He of power supply
Indicating circuit 202.In the present embodiment, power supply 201 is preferably realized using battery, enable the detection device 101 more
It is convenient for carrying with adding, to meet the needs of application scenarios such as outdoor measurement.
If indicating circuit 202 include the identical instruction branch of stem structure, wherein it is each instruction branch output head anode and
Negative pole of output end is used to connect with two ports for corresponding to conductive branch in tested interface circuit.
Wherein, if conductive branch is there are failure, instruction branch corresponding to the conductive branch will export corresponding
Indication signal；And if failure is not present in conductive branch conductive branch, instruction branch corresponding to the conductive branch will not
Export indication signal.
Since the structure of each instruction branch is identical, for convenience of description, below with the first instruction branch and the
The specific original of its function is realized for two instruction branches to interface circuit on off operating mode detection device provided by the present embodiment
Reason and process are further described.
As shown in Figure 1, the first instruction branch and the second instruction branch include three ports in the present embodiment.Wherein,
The first port of one instruction branch and the second instruction branch connect with the anode of power supply 201, meanwhile, first indicates branch and the
The first port of two instruction branches is also used as the output head anode of indicating circuit and the second end of each interface circuit to be measured
Mouth (such as port F1_2, port F2_2 of the second conductive branch of the first conductive branch etc.) connection.First instruction branch and the
The second port of two instruction branches is connect with the cathode of power supply 201, the third port first end with each conductive branch respectively
Mouth (such as port F1_1, port F2_1 of the second conductive branch of the first conductive branch etc.) is correspondingly connected with.
Specifically, in the present embodiment, the first instruction branch is preferably included: the first light emitting diode D1 and the first current limliting electricity
Hinder R1.Wherein, the anode of the first light emitting diode D1 connects as the first port of the first instruction branch and the anode of power supply 201
It connects, the cathode of the first light emitting diode D1 is connect with one end of the first current-limiting resistance R1, and the other end of the first current-limiting resistance R1 is made
Second port for the first instruction branch is connect with the cathode of power supply 201.Meanwhile first light emitting diode D1 and the first current limliting electricity
The public connecting end of R1 is hindered as the third port of the first instruction branch and the first end (i.e. port F1_1) of the first conductive branch
Connection.
Similarly, the first instruction branch preferably includes: the second light emitting diode D2 and the second current-limiting resistance R2.This implementation
In example, since the second instruction branch is identical as the first instruction circuit structure of branch, herein no longer to the second light-emitting diodes
How pipe D2 and the second current-limiting resistance R2, which constructs to obtain the second instruction branch, is repeated.
In the present embodiment, the third port of the first instruction branch and the second instruction branch can be used as the output of indicating circuit
Cathode is held to connect with the corresponding ports of corresponding conductive branch.
Certainly, in the present embodiment, according to actual needs, which can also include controllable
It switchs (Fig. 1 is not shown).The controllable switch is connected between power supply 101 and indicating circuit 102, is used for the power supply that is turned on or off
Galvanic circle between 101 and indicating circuit 102.
In the present embodiment, when the galvanic circle between power supply 101 and indicating circuit 102 be connected and the first conductive branch not
There are conducting wires when failure, between the first end (i.e. port F1_1) and second end (i.e. port F1_2) of the first conductive branch
Will be normal, the first conductive branch will indicate that the first light emitting diode D1 in branch is short-circuit for first at this time, such first hair
Optical diode D1 would not also shine.
And it is connected when the galvanic circle between power supply 101 and indicating circuit 102 but the first conductive branch is there are when failure,
Conducting wire between the first end (i.e. port F1_1) and second end (i.e. port F1_2) of one conductive branch will be in disconnection shape
State, the first conductive branch will not indicate that the first light emitting diode D1 in branch is short-circuit for first at this time, and such first shines
Diode D1 also will normal luminous, thus instruction the first conductive branch there are failures.
Therefore, the inspection of interface circuit on off operating mode is being carried out using interface circuit on off operating mode detection device as shown in Figure 1
When survey, it is only necessary to by the output with interface circuit on off operating mode detection device respectively of the both ends of conductive branch each in test line
Rectify pole and negative pole of output end is correspondingly connected with, and the electrical connection between power supply and indicating circuit is connected, it so also can root
The on-off of corresponding conductive branch is judged according to the state (i.e. whether light emitting diode is lighted) of instruction branch each in indicating circuit
State.
As can be seen that interface circuit on off operating mode detection device provided by the present embodiment can be only sharp from foregoing description
The detection to interface circuit on off operating mode is realized with power supply, light emitting diode and current-limiting resistance.Compared to existing interface
Circuit on-off condition checkout gear, circuit structure is obviously simpler, this also just effectively reduces the cost of detection device, and
And also contribute to the reliability of detection device.Meanwhile in the inspection for carrying out interface circuit on off operating mode using the detection device
When survey, for only needing the corresponding port by the port of conductive branch each in interface circuit and the detection device to be correspondingly connected with i.e.
Test process can be achieved, compared to existing method, which enables to effectively reduce the operation of entire detection process
Step, to improve detection efficiency.
In the present embodiment, if route to be measured too long (such as the port F1_1 of the first conductive branch and port F1_2, second
The port F2_1 and port F2_2 of conductive branch) between spacing distance it is too long, user can also lead to be measured in test line
One end of electric branch is connect with determining one end there is no the conductive branch of open circuit fault, and will test an output of device
Port is connect with the other end for having determined that the conductive branch there is no open circuit fault, by the another of conductive branch to be measured and detection device
The connection of one output port.
Specifically, as shown in Fig. 2, if between the port F1_1 and port F1_2 of the first conductive branch and second is conductive
Spacing distance between the port F2_1 and port F2_2 of branch is too long, and the first conductive branch can determine that there is no disconnected
Road failure, then user can will be shorted between the port F1_2 of the first conductive branch and the port F2_2 of the second conductive branch,
By the output head anode of the port F1_1 of the first conductive branch and indicating circuit connect, by the port F2_2 of the second conductive branch with
Output port cathode (i.e. third port) connection of second instruction branch.
Since the first conductive branch is conducting, the port F2_2 of the second conductive branch is also just equivalent to and instruction electricity
The output head anode on road connects, and realizes docking by the way that test device to be arranged in a certain interface side of tested interface circuit in this way
The detection of the on off operating mode of each conductive branch to be measured in mouth line road, to overcome two ports due to same conductive branch
Spacing distance is too long and detection device is caused to need the problem of being equipped with too long conducting wire.
It should be pointed out that in other embodiments of the invention, indicating circuit 202 can also use other reasonable electricity
Road form realizes that the invention is not limited thereto.For example, in one embodiment of the invention, indicating circuit 202 can also use
Circuit form as shown in Figure 3 is realized.As shown in figure 3, in this embodiment, each instruction that indicating circuit 202 is included
The structure of branch is identical, and by taking the first instruction branch as an example, the first instruction branch includes the first current-limiting resistance R1 and first luminous two
Pole pipe D1.
Wherein, one end of the first current-limiting resistance R1 forms the first port of indicating circuit 202 and connects with the anode of power supply 101
It connects, the other end of the first current-limiting resistance R1 is connect with the anode of the first light emitting diode D1, the cathode of the first light emitting diode D1
It forms the third port of indicating circuit 202 and is connect with the cathode of power supply 101.First current-limiting resistance R1 and the first light emitting diode
The public connecting end of D1 formed the third port of indicating circuit 202 and with wherein the one of conductive branch is corresponded in interface circuit to be measured
A port connection, and another port of the conductive branch is then connect with the cathode of power supply 101.Comprising more in indicating circuit 202
The third port of a instruction branch, each instruction branch can be connect with the corresponding ports of each conductive branch respectively.
In the present embodiment, the working principle of interface circuit on off operating mode detection device shown in Fig. 3 and the course of work with it is upper
The working principle for stating interface circuit on off operating mode detection device shown in FIG. 1 is similar with the course of work, therefore herein no longer to Fig. 3 institute
The specific working mode for the interface circuit on off operating mode detection device shown is repeated.
It should be understood that disclosed embodiment of this invention is not limited to specific structure disclosed herein or processing step
Suddenly, the equivalent substitute for these features that those of ordinary skill in the related art are understood should be extended to.It should also be understood that
It is that term as used herein is used only for the purpose of describing specific embodiments, and is not intended to limit.
" one embodiment " or " embodiment " mentioned in specification means the special characteristic described in conjunction with the embodiments, structure
Or characteristic is included at least one embodiment of the present invention.Therefore, the phrase " reality that specification various places throughout occurs
Apply example " or " embodiment " the same embodiment might not be referred both to.
Although above-mentioned example is used to illustrate principle of the present invention in one or more application, for the technology of this field
For personnel, without departing from the principles and ideas of the present invention, hence it is evident that can in form, the details of usage and implementation
It is upper that various modifications may be made and does not have to make the creative labor.Therefore, the present invention is defined by the appended claims.
Claims (8)
1. a kind of interface circuit on off operating mode detection device, which is characterized in that described device includes:
Power supply；
Indicating circuit comprising if the identical instruction branch of stem structure, the instruction branch includes output head anode and output end
Cathode, the output head anode and negative pole of output end of the indicating circuit are used for and correspond to the two of conductive branch in tested interface circuit
A port connection；
Wherein, if conductive branch is there are failure, instruction branch corresponding to the conductive branch will export corresponding instruction
Signal；And if failure is not present in conductive branch conductive branch, instruction branch corresponding to the conductive branch will not export
Indication signal.
2. device as described in claim 1, which is characterized in that it is described instruction branch first port with the power supply just
Pole connection, second port are connect with the cathode of the power supply, and third port is propped up with conduction each in interface circuit to be measured respectively
The first end on road is correspondingly connected with, and the positive or negative pole of the power supply is also connect with the second end of the interface circuit to be measured.
3. device as claimed in claim 2, which is characterized in that the instruction branch includes:
Light emitting diode, anode are connect as the first port of the instruction branch with the anode of the power supply；
Current-limiting resistance, one end are connect with the cathode of the light emitting diode, second end of the other end as the instruction branch
Mouth is connect with the cathode of the power supply, and the public connecting end of the light emitting diode and current-limiting resistance is as the instruction branch
Third port is connected with the first end of corresponding conductive branch.
4. device as claimed in claim 2, which is characterized in that the instruction branch includes:
Current-limiting resistance, one end are connect as the first port of the instruction branch with the anode of the power supply；
Light emitting diode, anode are connect with the other end of the current-limiting resistance, second end of the cathode as the instruction branch
Mouth is connect with the cathode of the power supply, and the public connecting end of the light emitting diode and current-limiting resistance is as the instruction branch
Third port is connected with the first end of corresponding conductive branch.
5. device as described in any one of claims 1 to 4, which is characterized in that described device further include:
Controllable switch is connected between the power supply and indicating circuit, for the power supply and the indicating circuit of being turned on or off
Between galvanic circle.
6. a kind of interface circuit on off operating mode detection method, which is characterized in that the method is based on as appointed in Claims 1 to 5
Interface circuit on off operating mode detection device described in one is realized comprising:
Step 1: by the both ends of conductive branch each in test line respectively with the interface circuit on off operating mode detection device
Anode and cathode are correspondingly connected with；
Step 2: the electrical connection between power supply and indicating circuit is connected, according to instruction branch each in the indicating circuit
State judges the on off operating mode of corresponding conductive branch.
7. method as claimed in claim 6, which is characterized in that in the step 2,
If indicating that the light emitting diode in branch is lighted, determine that the corresponding conductive branch of the instruction branch has open circuit event
Barrier；
If indicating that the light emitting diode in branch is in OFF state, determine that the corresponding conductive branch of instruction branch is not deposited
In open circuit fault.
8. a kind of interface circuit on off operating mode detection method, which is characterized in that the method is based on as appointed in Claims 1 to 5
Interface circuit on off operating mode detection device described in one is realized comprising:
Step 1: by one end of conductive branch to be measured in test line with have determined that one of conductive branch there is no open circuit fault
End connection, by an output port of the interface circuit on off operating mode detection device with have determined that leading there is no open circuit fault
The other end of electric branch connects, by another output of the conductive branch to be measured and the interface circuit on off operating mode detection device
Port connection；
Step 2: the electrical connection between power supply and indicating circuit is connected, according to instruction branch each in the indicating circuit
State judges the on off operating mode of corresponding conductive branch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841393.2A CN109521323A (en) | 2017-09-18 | 2017-09-18 | A kind of interface circuit on off operating mode detection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841393.2A CN109521323A (en) | 2017-09-18 | 2017-09-18 | A kind of interface circuit on off operating mode detection device and method |
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| Publication Number | Publication Date |
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| CN109521323A true CN109521323A (en) | 2019-03-26 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710841393.2A Pending CN109521323A (en) | 2017-09-18 | 2017-09-18 | A kind of interface circuit on off operating mode detection device and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113238903A (en) * | 2021-05-14 | 2021-08-10 | 山东英信计算机技术有限公司 | Slot position detection device for memory slot on main board |
| CN114200346A (en) * | 2021-11-18 | 2022-03-18 | 苏州浪潮智能科技有限公司 | Device and method for detecting on-off of cables in server system |
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Application publication date: 20190326 |
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