CN204101690U - A kind of Novel central telltale - Google Patents
A kind of Novel central telltale Download PDFInfo
- Publication number
- CN204101690U CN204101690U CN201420498467.9U CN201420498467U CN204101690U CN 204101690 U CN204101690 U CN 204101690U CN 201420498467 U CN201420498467 U CN 201420498467U CN 204101690 U CN204101690 U CN 204101690U
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- Prior art keywords
- door magnetic
- current
- magnetic current
- chip
- chip microcomputer
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- Relay Circuits (AREA)
Abstract
The utility model provides a kind of Novel central telltale, comprise modulus conversion chip, single-chip microcomputer, display alarm unit and door magnetic current transducers, described door magnetic current transducers converts thereof into digital signal by described modulus conversion chip and is sent to described single-chip microcomputer, display alarm unit described in described Single-chip Controlling, be characterized in due to what adopt it being electromagnetic induction, no matter there is any exception in outside accident and anticipating signal loop, all can not damage the fluxgate type current sensor of employing, and when occurring the abnormal alarm of resistive short big current.
Description
Technical field
The utility model belongs to detection field, especially a kind of pick-up unit for fault.
Background technology
At present at the national level, consisting of of central signal device: pulse relay, timing relay, auxiliary reclay, flashing relay, photon board, hummer, the compositions such as electric bell.Existing problems: power consumption is large, the shortcomings such as volume is large, and wiring link is many, and construction is complicated.By the relay of the impact of current differential (integration) principle work, when accident and anticipating signal loop start, being switched on or switched off of photon board or resistance causes the sudden change of signal electric power road instantaneous value to impact relay misoperation to do or the mistake of resistance does not access or the diminishing of resistance, impact relay permanent damage, and the current number breaking down and predict cannot be known.
Summary of the invention
The purpose of this utility model solves central signal device to suffer heavy current impact, and fragile, fault number such as cannot to measure at the problem.
To achieve these goals, the technical solution of the utility model is achieved in that a kind of Novel central telltale of the utility model, comprise modulus conversion chip, single-chip microcomputer, display alarm unit and door magnetic current transducers, described door magnetic current transducers converts thereof into digital signal by described modulus conversion chip and is sent to described single-chip microcomputer, the display alarm unit described in described Single-chip Controlling.
Further, described door magnetic current transducers comprises resistance, current transformer and relay, and described current transformer installs around on the circuit between described resistance and relay, and described current transformer is connected with described single-chip microcomputer.
Further, described door magnetic current transducers also comprises fuse, and described fuse is arranged between described resistance summation current transformer.
Further, the resistance of described door magnetic current transducers has 18.
Further, described door magnetic current transducers has two, one for anticipating signal, one for trouble-signal.
The utility model, on original technology, gives up the heavy fragile parts such as pulse relay, timing relay, auxiliary reclay and flashing relay, adopts fluxgate type current sensor.Due to employing is electromagnetic induction, no matter there is any exception in outside accident and anticipating signal loop, all can not damage the fluxgate type current sensor of employing. and when occurring the abnormal alarm of resistive short big current, by this fluxgate type current sensor, the electric current of collection is converted to voltage to export, analog quantity is become digital quantity by modulus conversion chip sampling by this voltage, these data process by single-chip microcomputer, when this certain numerical value larger than last secondary data, will jingle bell, lamp dodges, and calculate the number of advance notice and accident by the process of digital quantity and export.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1: utility model works schematic diagram.
Fig. 2: the utility model door magnetic current transducers structural drawing.
Embodiment
The technological means realized to make the utility model, creation characteristic, reaching object and effect is easy to understand, below in conjunction with concrete diagram, setting forth the utility model further.
As shown in Figure 1, a kind of Novel central telltale of the utility model, comprise a magnetic current transducers (1), modulus conversion chip (2), single-chip microcomputer (3) and display alarm unit (4), described door magnetic current transducers (1) converts thereof into digital signal by described modulus conversion chip (2) and is sent to described single-chip microcomputer (3), the display alarm unit (4) described in described single-chip microcomputer (3) controls.
As shown in Figure 2, door magnetic current transducers (1) comprises resistance R, current transformer T and relay, described current transformer T installs around on the circuit between described resistance R and relay, described current transformer (T) is connected with described single-chip microcomputer (3), described door magnetic current transducers (1) also comprises fuse F, described fuse F is arranged between described resistance R summation current transformer T, the resistance R of described door magnetic current transducers has 18, described door magnetic current transducers T has two, one for anticipating signal, one for trouble-signal.
Embodiment
Substance of the present utility model is input as resistance 15K/20W, making alive 220VDC, the electric current produced, Gong Wei 36 tunnel, wherein 18 tunnels are anticipating signal, other 18 tunnels are trouble-signal, 18 tunnel anticipating signals and 18 tunnel trouble-signals are passed respective door magnetic-type current sensor, the electric current of change is converted to corresponding linear voltage by electromagnetic induction, linear voltage is converted to digital quantity by modulus conversion chip MAX187, its digital quantity of type collection is interrupted by it again by ATMEGA128 single-chip microcomputer, then compare with previous digital quantity according to the digital quantity of current collection.If be greater than certain scope, run indicator is gone out, and calculate out of order number by comparing, shown by display device, hummer is loud, malfunction indicator lamp is bright, presses after removing failure button; Hummer stops the sound, and when fault is not got rid of, pilot lamp is still bright; When there being fault-signal to produce again, (when this digital quantity is greater than previous digital quantity certain limit) hummer continues the sound, malfunction indicator lamp is still bright, until fault gets rid of rear (when this digital quantity is not more than previous digital quantity certain limit) hummer completely stop the sound, malfunction indicator lamp is gone out, and run indicator is bright.
If there is a certain road short circuit phenomenon, electric current increases suddenly, input current scope due to this current transformer is 0-300MA, increase degree is: (220/15) * 18=264MA, stay certain surplus, when being greater than 280MA with convenient input current, can be judged as that certain road occurs that current-limiting resistance is abnormal, hummer sends the most urgent sound, and disconnected by monolithic processor controlled relay, (under normal operative condition, relay closes always, and Control is by the electric current of door magnetic-type mutual inductor).
Duty is divided into normal work, advance notice accident and big current fault three kinds of situations.
During normal work, input current is 0, be 2.50+/-0.05V when electric current is 0 by the output voltage of door magnetic current transducers CS01-P, after being changed by modulus conversion chip, digital quantity is 2500+/-50,, use pilot relay first to disconnect the electric current of a magnetic current transducers after switching on power, the initial value measuring access failure electric current stores, and then relay is kept closed, state running indicator lamp keeps bright.
During advance notice accident alarming, be that 220/15 mA multiple increases by the electric current of door magnetic current transducers, corresponding voltage 0.0586V multiple increases, and corresponding digital quantity increases with 58 multiples.Gathered by interrupt routine, be greater than gathered 50 last time if this gathers digital quantity, corresponding advance notice or breakdown lights bright, hummer rings, and running indicator goes out.Number of faults is with the ratio of its AD total increment and 58, by this data transfer on LCD12864, then press releasing advance notice/accident button, cancel sound, then when not removing fault, advance notice/breakdown lights is still bright, only have when the data value gathered maintains an equal level with not alive initial AD value, all advance notice/breakdown lights go out, and hummer stops ringing.
Big current fault, when the electric current by door magnetic current transducers is greater than 280MA, corresponding A D increment is 1120.When detecting that this is greater than 1120 than first AD increment, namely big current fault is judged as, now hummer rings, Control correspondence makes it disconnect by the current lead of door magnetic current transducers, by removing big current button, hummer stops ringing, and then search the circuit causing big current, after repairing loop, relay can automatically restore to initial closure state.
T is current transformer, by-pass, by fuse, and relay, the lower node of access voltage 220V and protection switch resistance.After switch has exception closed, cause the line current through coil to change, output voltage changes thereupon, voltage transitions is digital signal by MAX187, be transferred to single-chip microcomputer single-chip microcomputer data are processed, first record initial value, then this and previous record are compared.If this is greater than previous certain numerical value, cause hummer, pilot lamp is bright; (running indicator goes out) is if under having the situation of big current fault; first fuse F can protect relay; the data of single-chip microcomputer collection are greater than 1120 during than for the first time; be big current fault; Single-chip Controlling relay is opened; look into circuit and recover, can automatic closing relay after microprocessor detect completes.
More than show and describe ultimate principle of the present utility model and principal character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; what describe in above-described embodiment and instructions just illustrates principle of the present utility model; under the prerequisite not departing from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall within the scope of claimed the utility model.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (5)
1. a Novel central telltale, comprise modulus conversion chip, single-chip microcomputer and display alarm unit, it is characterized in that, also comprise a magnetic current transducers, described door magnetic current transducers converts thereof into digital signal by described modulus conversion chip and is sent to described single-chip microcomputer, the display alarm unit described in described Single-chip Controlling.
2. a kind of Novel central telltale according to claim 1, it is characterized in that, described door magnetic current transducers comprises resistance, current transformer and relay, described current transformer installs around on the circuit between described resistance and relay, and described current transformer is connected with described single-chip microcomputer.
3. a kind of Novel central telltale according to claim 2, is characterized in that, described door magnetic current transducers also comprises fuse, and described fuse is arranged between described resistance summation current transformer.
4. a kind of Novel central telltale according to Claims 2 or 3, is characterized in that, the resistance of described door magnetic current transducers has 18.
5. a kind of Novel central telltale according to claim 4, is characterized in that, described door magnetic current transducers has two, one for anticipating signal, one for trouble-signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498467.9U CN204101690U (en) | 2014-09-01 | 2014-09-01 | A kind of Novel central telltale |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420498467.9U CN204101690U (en) | 2014-09-01 | 2014-09-01 | A kind of Novel central telltale |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204101690U true CN204101690U (en) | 2015-01-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420498467.9U Withdrawn - After Issue CN204101690U (en) | 2014-09-01 | 2014-09-01 | A kind of Novel central telltale |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204101690U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251967A (en) * | 2014-09-01 | 2014-12-31 | 陕西欧瑞特电气有限公司 | Novel central signal device |
-
2014
- 2014-09-01 CN CN201420498467.9U patent/CN204101690U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104251967A (en) * | 2014-09-01 | 2014-12-31 | 陕西欧瑞特电气有限公司 | Novel central signal device |
| CN104251967B (en) * | 2014-09-01 | 2017-10-03 | 陕西欧瑞特电气有限公司 | A kind of novel central recoil simulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150114 Effective date of abandoning: 20171003 |
|
| AV01 | Patent right actively abandoned |