CN206146447U - Gray code display circuit and gray code testing arrangement - Google Patents
Gray code display circuit and gray code testing arrangement Download PDFInfo
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- CN206146447U CN206146447U CN201621012121.9U CN201621012121U CN206146447U CN 206146447 U CN206146447 U CN 206146447U CN 201621012121 U CN201621012121 U CN 201621012121U CN 206146447 U CN206146447 U CN 206146447U
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Abstract
The utility model relates to a gray code display circuit and gray code testing arrangement. The gray code display circuit is connected in gray code generation module for the gray code signal output who generates according to gray code generation module shows the signal. The gray code display circuit includes switch tube and display element. The gray code signal is received to the switch tube to control display element's demonstration, display element can accurate demonstrations gray code signal state, thus realization gray code signal testing. Maintenance person person can clearly know current gray code output signal, accurate fault localization, and safeguard.
Description
Technical field
This utility model be related to nuclear power station control stick bit test technical field, more particularly to Gray code display circuit and
Gray code test device.
Background technology
Checked or to controlling rod position measuring in the Control card processed to nuclear power station control stick position information
During channel failure process, the Gray code produced to Control card is needed to test, to confirm current Gray code and reality output
Rod position information it is whether consistent.
Traditional nuclear power station can only be checked to the threshold value of Control card and measurement magnitude of voltage, according to comparing threshold value and survey
Amount voltage further judges that Gray code is exported, without the special purpose device tested by the Gray code to reality output.When threshold value ratio
During compared with module failure or abnormal Gray code output loop, maintainer can not clearly know current Gray code output signal,
Failure can not be accurately positioned.
Utility model content
Based on this, it is necessary to for the problems referred to above, there is provided one kind can accurately show gray code signal state, realize Gray code
The Gray code display circuit and Gray code test device of signal testing.
A kind of Gray code display circuit, is connected to Gray code generation module, for what is generated according to Gray code generation module
Gray code signal output display signal；The Gray code display circuit includes switching tube and display unit；
The switching tube receives the gray code signal, and controls the display of the display unit；
The control end of the switching tube is connected with the Gray code generation module, and the input of the switching tube is aobvious with described
Show that unit connects, the display unit is connected with the feeder ear in Gray code generation module；The output head grounding of the switching tube.
Wherein in one embodiment, the display unit includes the first diode, the anode of first diode with
Feeder ear connection in the Gray code generation module, the negative electrode of first diode are connected with the input of the switching tube
Connect.
Wherein in one embodiment, the display unit also include the second diode, second diode with it is described
First diodes in parallel, and the negative electrode of second diode is connected with the anode of first diode, the two or two pole
The anode of pipe is connected with the negative electrode of first diode.
Wherein in one embodiment, also including first resistor and second resistance, the first resistor is connected to described
Between feeder ear in the anode of one diode and the Gray code generation module；The second resistance is connected to the switching tube
Control end and the Gray code generation module between.
Wherein in one embodiment, the switching tube is NPN type triode；The colelctor electrode of the NPN type triode, send out
Emitter-base bandgap grading, base stage are respectively as the input of the switching tube, outfan and control end.
Wherein in one embodiment, the switching tube is insulating gate type field effect tube；The insulating gate type field effect tube
Drain electrode, source electrode, grid is respectively as the input of the switching tube, outfan, control end.
Additionally, a kind of Gray code test device is also provided, including the above-mentioned Gray code of Gray code generation module and five tunnels shows
Circuit, the Gray code generation module are used to generate five standard gray code signals；The Gray code display circuit is received all the way
One standard gray code signal.
Wherein in one embodiment, the Gray code generation module includes：
Stick location probe, for detecting control stick position information；
Control card, for processing rod position information, and generates five standard gray code signals；
Extension board, is connected with the stick location probe, Control card, Gray code display circuit respectively, for by the rod
Position information transfer gives the Gray code display circuit to the Control card and by five standard Gray codes signal output.
Above-mentioned Gray code display circuit, is connected to Gray code generation module, can be generated according to Gray code generation module
Gray code signal output display signal, including switching tube and display unit, switching tube receive gray code signal, and control to show single
The display of unit, display unit can accurately show gray code signal state, so as to realize that gray code signal is tested, maintainer energy
It is enough clearly to know current Gray code output signal, failure is accurately positioned, and is safeguarded.
Description of the drawings
Schematic diagrams of the Fig. 1 for Gray code display circuit；
Circuit diagrams of the Fig. 2 for Gray code test device.
Specific embodiment
For the ease of understanding this utility model, this utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But, this utility model can come real in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
The understanding for opening content is more thorough comprehensive.
Unless otherwise defined, all of technology used herein and scientific terminology are led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.In term used in the description of the present utility model it is simply herein
The purpose of description specific embodiment, it is not intended that limit this utility model.Term as used herein "and/or" includes one
The arbitrary and all of combination of individual or multiple related Listed Items.
Circuit theory diagrams for Gray code display circuit as shown in Figure 1, Gray code display circuit 10 are connected to Gray code
Generation module 20, for the gray code signal output display signal generated according to Gray code generation module 20, including switching tube 110
With display unit 120.Switching tube 110 receives gray code signal, and the display of control display unit 120.The control of switching tube 110
End is connected with Gray code generation module 20, and the input of switching tube 110 is connected with display unit 120, display unit 120 and Gray
Feeder ear connection in code generation module 20；The output head grounding of switching tube 110.
In the present embodiment, switching tube 110 is NPN type triode Q1；Wherein, the colelctor electrode of NPN type triode, transmitting
Pole, base stage are respectively as the input of switching tube 110, outfan and control end.NPN type triode Q1 can also use positive-negative-positive three
Pole pipe is substituted.In other embodiments, switching tube 110 can also be insulating gate type field effect tube；Insulating gate type field effect tube
Drain electrode, source electrode, grid are respectively as the input of switching tube 110, outfan, control end.
Display unit 120 includes the first diode D1, in the anode and Gray code generation module 20 of the first diode D1
Feeder ear connects, and the negative electrode of the first diode D1 is connected with the input of switching tube 110.In the present embodiment, Gray code is generated
Feeder ear in module 20 is 5 volts of DC voltages.When the gray code signal of the output of Gray code generation module 20 is high level, its
Switching tube is turned on so that the first diode D1 (LED) is lighted；If when the gray code signal of the output of Gray code generation module 20 is
During low level, its switching tube is turned on so that the first diode D1 (LED) extinguishes.Show current by the first diode D1
The state of gray code signal, realizes the test of gray code signal.
Display unit 120 also includes the second diode D2, and the second diode D2 is in parallel with the first diode D1, and the two or two
The negative electrode of pole pipe D2 is connected with the anode of the first diode D1, and the negative electrode of the anode of the second diode D2 and the first diode D1 connects
Connect.Second diode D2 is in parallel with the first diode D1, realizes the protection to the first diode D1.
The display circuit also includes first resistor R1 and second resistance R2, and first resistor R1 is connected to the first diode D1's
Between feeder ear in anode and Gray code generation module 20；Second resistance R2 is connected to the control end of switching tube 110 and Gray
Between code generation module 20.First resistor R1 and second resistance R2 are current-limiting resistance, arrange first resistor R1 and second resistance
R2 to limit the size of place branch current, in case electric current is excessive to burn out the first connected diode D1 and switching tube 110.
In the inspection work to Gray code generation module, can be accurately to Gray code using the Gray code display circuit
Tested, maintainer can clearly know current Gray code output signal, be accurately positioned failure, and safeguarded.
A kind of Gray code test device, with reference to Fig. 2, test device includes that Gray code generation module 20 and five road Gray codes are aobvious
Show circuit 10, Gray code generation module 20 is used to generate five standard gray code signals；Gray code display circuit 10 is received all the way
One standard gray code signal.Wherein, Gray code generation module 20 includes：Stick location probe 210, for detecting control stick position
Information；Control card 220, for processing rod position information, and generates five standard gray code signals；Extension board 230, respectively
Be connected with the stick location probe 210, Control card 220, Gray code display circuit, for by rod position information transfer to institute
State Control card 220 and by five standard Gray codes signal output to the Gray code display circuit.
During test, 210 secondary coil of stick location probe sets up the magnetic field of alternation by sensing primary winding, produces
Raw induced voltage, generates rod position information, by extension board 230 by rod position information transfer to Control card 220, by Control card
220 pairs of rod position information are processed, and generate 5 standard gray code signals.The five standard gray code signals for generating are again by extending
Five ports of plate 230 are exported to five road Gray code display circuits 10.When Gray code exports high level, switching tube 110 is turned on,
First diode D1 (LED light) is lighted, conversely, the first diode D1 (LED light) extinguishes, five road Gray codes show electricity
Road 10 shows the state of five standard gray code signals simultaneously, and then realizes the test of gray code signal, and improve equipment can
By property.
Each technical characteristic of embodiment described above arbitrarily can be combined, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more concrete and detailed,
But therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, some deformations and improvement can also be made, these belong to
Protection domain of the present utility model.Therefore, the protection domain of this utility model patent should be defined by claims.
Claims (8)
1. a kind of Gray code display circuit, it is characterised in that be connected to Gray code generation module, for generating mould according to Gray code
The gray code signal output display signal that block is generated；The Gray code display circuit includes switching tube and display unit；
The switching tube receives the gray code signal, and controls the display of the display unit；
The control end of the switching tube is connected with the Gray code generation module, and the input of the switching tube shows single with described
Unit's connection, the display unit are connected with the feeder ear in Gray code generation module；The output head grounding of the switching tube.
2. Gray code display circuit according to claim 1, it is characterised in that the display unit includes the one or two pole
Pipe, the anode of first diode are connected with the feeder ear in the Gray code generation module, the moon of first diode
Pole is connected with the input of the switching tube.
3. Gray code display circuit according to claim 2, it is characterised in that the display unit also includes the two or two pole
Pipe, second diode and first diodes in parallel, and the negative electrode of second diode and first diode
Anode connection, the anode of second diode is connected with the negative electrode of first diode.
4. Gray code display circuit according to claim 2, it is characterised in that also including first resistor and second resistance,
The first resistor is connected between the feeder ear in the anode of first diode and the Gray code generation module；It is described
Second resistance is connected between the control end of the switching tube and the Gray code generation module.
5. Gray code display circuit according to claim 1, it is characterised in that the switching tube is NPN type triode；Institute
The colelctor electrode of NPN type triode, emitter stage, base stage are stated respectively as the input of the switching tube, outfan and control end.
6. Gray code display circuit according to claim 1, it is characterised in that the switching tube is insulated-gate type field effect
Pipe；The drain electrode of the insulating gate type field effect tube, source electrode, grid are respectively as the input of the switching tube, outfan, control
End.
7. a kind of Gray code test device, it is characterised in that including Gray code generation module and five tunnels such as claim 1～6 times
Gray code display circuit described in one, the Gray code generation module are used to generate five standard gray code signals；Institute all the way
State Gray code display circuit and receive a standard gray code signal.
8. Gray code test device according to claim 7, it is characterised in that the Gray code generation module includes：
Stick location probe, for detecting control stick position information；
Control card, for processing rod position information, and generates five standard gray code signals；
Extension board, is connected with the stick location probe, Control card, Gray code display circuit respectively, for the rod position is believed
Breath is transmitted to the Control card and by five standard Gray codes signal output to the Gray code display circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621012121.9U CN206146447U (en) | 2016-08-30 | 2016-08-30 | Gray code display circuit and gray code testing arrangement |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621012121.9U CN206146447U (en) | 2016-08-30 | 2016-08-30 | Gray code display circuit and gray code testing arrangement |
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| CN206146447U true CN206146447U (en) | 2017-05-03 |
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| CN201621012121.9U Active CN206146447U (en) | 2016-08-30 | 2016-08-30 | Gray code display circuit and gray code testing arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113110278A (en) * | 2021-04-13 | 2021-07-13 | 珠海格力智能装备有限公司 | Information interaction method and device, storage medium and processor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113110278A (en) * | 2021-04-13 | 2021-07-13 | 珠海格力智能装备有限公司 | Information interaction method and device, storage medium and processor |
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