CN107358901A - A kind of digital display tube that alarm function is compared with electric current - Google Patents
A kind of digital display tube that alarm function is compared with electric current Download PDFInfo
- Publication number
- CN107358901A CN107358901A CN201710682173.XA CN201710682173A CN107358901A CN 107358901 A CN107358901 A CN 107358901A CN 201710682173 A CN201710682173 A CN 201710682173A CN 107358901 A CN107358901 A CN 107358901A
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- Prior art keywords
- current value
- electric current
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/04—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions
- G09G3/06—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources
- G09G3/12—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of a single character by selection from a plurality of characters, or by composing the character by combination of individual elements, e.g. segments using a combination of such display devices for composing words, rows or the like, in a frame with fixed character positions using controlled light sources using electroluminescent elements
- G09G3/14—Semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/0092—Arrangements for measuring currents or voltages or for indicating presence or sign thereof measuring current only
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Theoretical Computer Science (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention discloses a kind of digital display tube that alarm function is compared with electric current, its drip irrigation device is the pcb board for including reflection cap, being embedded on reflection cap madial wall and being adhesively fixed with reflection cap, safety alarm device is provided with reflection cap, safety alarm device includes：Current value detection module, current value detection module detect the electric current value information and output current value signal of energization in real time；Current value ratio compares signal to blocks current value will receive current value signals compared with default a reference value, output circuit conversion signal when current value signals are more than or less than default a reference value；Circuit conversion module, circuit switching is carried out when circuit conversion module receives circuit conversion signal so as to control digital display tube to start working, having reached convenience can ensure that digital display tube is not damaged by when misconnection enters in high-current circuit, misconnection enters to reduce when in low current circuit the loss of digital display tube, improves the technique effect of safety in utilization.
Description
Technical field
The present invention relates to a kind of charactron, more particularly to a kind of digital display tube that alarm function is compared with electric current.
Background technology
Charactron is a kind of light emitting semiconductor device, and its elementary cell is light emitting diode.Charactron can be divided into by hop count
Seven segment digital tubes and eight segment numeral pipes, eight segment numeral pipes light emitting diode more than seven segment digital tubes, that is, more one
Individual decimal point（DP）This decimal point can more accurately represent that charactron wants the content of display；It is how many individual by that can show（8）
1,2,3,4,5,6, the charactrons such as 7 can be divided into.
The existing Chinese patent for referring to Application No. 201020149540.3, it discloses a kind of LED charactrons, institute
Stating LED charactrons includes multiple LEDs, and on pcb board, the LED charactrons also include being arranged at the multiple LED paster
Light-guiding pillar above LED.In the present invention, by directly on pcb board paster use LED, and install and lead accordingly
Light beam, to realize the function of charactron, not only realize relatively simple, conveniently, and cost is low, also, display field, color can
Arbitrarily change.So, the LED charactrons of existing module are just solved, for different display requirements, it is necessary to re-mold,
Not only change is got up cumbersome, and the problem of cause cost to waste.
Common charactron is operated under 6V or so voltage, when current value is too high in the circuit of charactron series connection
Easily cause charactron to burn, and digital display tube does not work and is lost when the current value of access is too small, using rising
It is not very convenient to come.
The content of the invention
It is an object of the invention to provide a kind of digital display tube that alarm function is compared with electric current, have and enter height in misconnection
It can ensure that digital display tube is not damaged by when in current circuit, and be accessed in digital display tube in low current circuit and ensure number
Code display tube is not depleted, the advantages of improving safety in utilization.
The present invention above-mentioned technical purpose technical scheme is that：
It is a kind of with electric current compare alarm function digital display tube, including reflection cap, be embedded on reflection cap madial wall and
The pcb board being adhesively fixed with reflection cap, is provided with safety alarm device on reflection cap, and the safety alarm device includes：Electric current
It is worth detection module, the current value detection module detects the electric current value information and output current value signal of energization in real time；Electric current
It is worth comparing module, the current value comparing module connects current value detection module, and the current value ratio will receive electricity to signal
Flow valuve signal is compared with default a reference value, the output circuit when current value signals are more than or less than default a reference value
Conversion signal；Circuit conversion module, the circuit conversion module connect current value comparing module and in response to current value ratios pair
The circuit conversion signal of module output, circuit switching is carried out when the circuit conversion module receives circuit conversion signal so as to control
Digital display tube processed is started working.
By using such scheme, detected in real time by the current value detection module of setting during normal use
Electric current value information and output electric current measure signal between the both positive and negative polarity of PIN power supply terminals, current value detection signal is transmitted
Give current value comparing module, current value comparing module by the electric current value information detected compared with default a reference value, when
Circuit conversion signal is transferred to circuit conversion module, circuit conversion when electric current value information is less or greater than default a reference value
Module control circuit switches over and then controls digital display tube to start working, and can effectively avoid excessive in use
Current value causes to damage to digital display tube, improves the security performance of product.
Preferably, the current value detection module includes the current sensor being located between two poles and passed with electric current
The load resistance of sensor series connection.
By using such scheme, specifically, detecting PIN power supply terminals in real time just by current sensor when in use
Electric current value information between negative pole, finally realizes the detection to electric current value information, and equipment is simple and practical.
Preferably, current value comparing module includes：Electric current comparing unit, the electric current comparing unit connection current value detection
Module and by the current value signals that current value detection module exports compared with default a reference value, when current value signals are big
When default a reference value, electric current comparing unit output circuit conversion signal；Current amplification unit, the Current amplifier
Unit connects electric current comparing unit and exported after the circuit conversion signal that electric current comparing unit exports is amplified.
By using such scheme, in use by electric current comparing unit by the current value signals received with it is pre-
If a reference value be compared, output circuit conversion signal when more than or less than default a reference value, current amplification unit
Exported after the circuit conversion signal received is amplified, system operatio is simple and convenient, adds the practicality effect of system.
Preferably, also include：Alarming device, the alarming device connect current amplification unit and in response to Current amplifiers
The circuit conversion signal of unit output, the alarming device send information warning when receiving circuit conversion signal.
By using such scheme, in use, alarming device connection current amplification unit and receiving electricity
Control alarming device to send alarm during the conversion signal of road, remind the excessive or too small information of operating personnel's electric current value information, energy
The security performance during product use is enough improved, adds the practicality effect of product.
Preferably, the alarming device includes the buzzer of connection current amplification unit, the buzzer is receiving electricity
Buzzing alarming is sent during the conversion signal of road.
By using such scheme, specifically, alarming device includes buzzer, buzzer receives circuit and turned when in use
Feng Ming alarm can be sent when changing signal, improves the security performance during product use, adds the practicality effect of product
Fruit.
Preferably, also include：Current value display module, the current value display module connect current value detection module and
The electric current value information of current value detection module detection is shown.
By using such scheme, the current value display module real-time display electric current of setting can be passed through in use
Value information, convenient to carry out control to the electric current value information of socket in real time, product is easy to use, adds the practicality of product
Effect.
Preferably, the current value display module includes：Electric current video-stream processor, the electric current video-stream processor connection electricity
Flow valuve detection module and it will be exported after current value signals that current value detection module exports analyzing and processing；Current value displaying block,
The current value signals that the current value displaying block connects electric current video-stream processor and exports electric current video-stream processor are shown
Show.
By using such scheme, specifically, electric current video-stream processor by the current value signals received carry out analysis and
Handle and be transferred to current value displaying block, shown that product operation is simple and convenient by current value displaying block, add production
The practicality effect of product.
Preferably, the position for being fixedly mounted on the bottom surface with multigroup locating rod, locating rod being corresponded on the pcb board of the reflection cap
It is provided with the locating slot to be cooperated with locating rod.
By using such scheme, when pcb board is positioned in reflection cap so that locating slot on pcb board can be with
Locating rod is adapted so that pcb board smoothly can be embedded in reflection cap, be finally completed the installation to pcb board, enabled to
Lamp on pcb board can be just corresponding with loophole, adds the stabilizing effect of product.
Preferably, be installed with the locating piece of semi-cylindrical in the side wall of the reflection cap side, be provided with the pcb board with
The fixing groove that locating piece is adapted, the diameter of the locating piece upper end are less than the diameter of its lower end.
By using such scheme, specifically, locating piece that can be by setting during normal use and fixation
Groove is coordinated so that pcb board is capable of the placement of positive positioning during pcb board is placed, and effectively pcb board can be avoided to put
The occurrence of anti-so that pcb board can be corresponding with reflection cap, and product installation is simple and convenient, adds the practicality of product
Effect.
In summary, the invention has the advantages that：It can ensure when misconnection enters in high-current circuit digital aobvious
Show that pipe is not damaged by, can ensure that digital display tube is not depleted when digital display tube is accessed in low current circuit；Improve
Safety in utilization；Add the practicality effect of product.
Brief description of the drawings
Fig. 1 is digital display tube overall structure diagram in embodiment；
Fig. 2 is prominent reflection cap and the exploded perspective view of pcb board attachment structure in embodiment；
Fig. 3 is the block schematic illustration of safety alarm device in embodiment；
Fig. 4 is the circuit diagram of overall control circuit in embodiment；
Fig. 5 is the circuit diagram that control circuit highlights alarming device in embodiment；
Fig. 6 is the circuit diagram that embodiment convexity shows digital display tube circuit connecting relation；
Fig. 7 is the system framework figure that embodiment convexity shows current value display module.
In figure, 1, reflection cap；11st, locating rod；12nd, locating piece；2nd, pcb board；21st, locating slot；22nd, fixing groove；3rd, electric current
It is worth detection module；4th, current value comparing module；5th, circuit conversion module；6th, alarming device；7th, current value display module.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.Wherein identical parts identical reference
Represent.It should be noted that below in description the word "front", "rear", "left", "right", the "up" and "down" that use refer to it is attached
Direction in figure, word " bottom surface " and " top surface ", " interior " and " outer " are referred respectively to towards or away from particular elements geometric center
Direction.
Embodiment：A kind of digital display tube that alarm function is compared with electric current, as shown in figure 1, including reflection cap 1 and
The pcb board 2 being adhesively fixed in reflection cap 1 and in reflection cap 1 is embedded at, it is solid on the bottom surface of reflection cap 1 with reference to Fig. 1 and Fig. 2
Provided with multigroup locating rod 11 being parallel to each other, the position that locating rod 11 is corresponded on pcb board 2 is provided with what is be adapted with locating rod 11
Locating slot 21, the locating piece 12 of semi-cylindrical is installed with the inwall of the side of reflection cap 1, is provided with and positions on pcb board 2
The fixing groove 22 that block 12 is adapted, the wherein diameter of the upper end of locating piece 12 are less than the diameter of its lower end.
As shown in figure 3, in reflection cap 1（With reference to figure 1）Safety alarm device 6 is provided with, safety alarm device 6 includes electric current
It is worth detection module 3, current value comparing module 4, circuit conversion module 5, alarming device 6 and current value display module 7.
As shown in figure 4, current value detection module 3 includes the current sensor P being connected on power supply VCC and is connected on electricity
Load resistance R3 on flow sensor P；Current value comparing module 4 includes electric current comparing unit and connects electric current comparing unit
Current amplification unit, electric current comparing unit include connection current sensor P comparator T1 and connection current sensor P ratio
Compared with device T2, current sensor P couples with comparator T1 negative-phase input and comparator T2 positive input respectively, is comparing
Device T1 positive input input has a reference value Vref1, has a reference value Vref2, base in comparator T2 negative-phase input input
Quasi- value Vref1 can be more than or equal to a reference value Vref2, and XOR is coupled jointly in comparator T1 and comparator T2 output end
Gate circuit, it is different when the electric current value information that current sensor P is detected is higher than a reference value Vref2 or less than a reference value Vref1
OR circuit exports high level signal；Current amplification unit includes the amplifier T3 in connection NOR gate circuit output end, amplification
Device T3 positive input and the output end of NOR gate circuit are coupled, and resistance R2 is in series with amplifier T3 negative-phase input
And the end is in series with resistance R1 via setting is grounded after resistance R2 between amplifier T3 negative-phase input and output end；
Wherein load resistance R3 and amplifier T3 is arranged in series.
With reference to Fig. 4 and Fig. 5, circuit conversion module 5 includes the relay KA1, relay KA1 being series on load resistance R3
Including the magnet coil KA1 being series on load resistance R3, magnet coil KA1 other end ground connection is set, circuit conversion module 5
Also include the normally opened contact KA1 being series on power supply VCC, be coupled with protective resistance R4 in the normally opened contact KA1 other end, protect
Resistance R4 other end ground connection is set, and circuit conversion module 5 also includes the normally-closed contact KA1 being series on digital display tube（Ginseng
Examine Fig. 6）.
Alarming device 6 includes the buzzer H for being parallel to protective resistance R4 both ends, and buzzer H sends buzzing alarming when turning on.
As shown in fig. 7, current value display module 7 includes the electric current video-stream processor and connection electricity of connection current sensor
The current value displaying block of video-stream processor is flowed, wherein current value displaying block includes, and shows charactron, shows charactron real-time display
Electric current value information in circuit.
Concrete operations flow is as follows：
When in use, by the electric current value information in the current sensor P real-time detection circuits of setting and detection signal is exported,
When a reference value Vref1 is higher than a reference value Vref2, it is work to take the electric current value information between a reference value Vref1 and a reference value Vref2
The electric current value information of work, when electric current value information is maximum more than both or during less than both minimum values, NOR gate circuit output
High level signal, and exported after amplifying via amplifier T3, final to control magnet coil KA1 invocation points, normally opened contact KA1 is closed
Close, buzzer H sends buzzing alarming, and normally-closed contact KA1 disconnects, can protect digital display tube and then prevent digital display tube from damaging
It is bad.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (9)
1. a kind of digital display tube that alarm function is compared with electric current, including reflection cap（1）, be embedded at reflection cap（1）Inner side
On wall and and reflection cap（1）The pcb board being adhesively fixed（2）, it is characterised in that in reflection cap（1）Security warning is provided with to fill
Put（6）, the safety alarm device（6）Including：
Current value detection module（3）, the current value detection module（3）The electric current value information being powered is detected in real time and exports electricity
Flow valuve signal；
Current value comparing module（4）, the current value comparing module（4）Connect current value detection module（3）, the current value ratio
Current value signals will be received to signal compared with default a reference value, the current value signals are more than or less than default
Output circuit conversion signal during a reference value；
Circuit conversion module（5）, the circuit conversion module（5）Connect current value comparing module（4）And in response to current value
Comparing module（4）The circuit conversion signal of output, the circuit conversion module（5）Enter row line when receiving circuit conversion signal
Switch so as to control digital display tube to start working.
A kind of 2. digital display tube that alarm function is compared with electric current according to claim 1, it is characterised in that：It is described
Current value detection module（3）Including the current sensor between two poles and the load connected with current sensor electricity
Resistance.
A kind of 3. digital display tube that alarm function is compared with electric current according to claim 1, it is characterised in that electric current
It is worth comparing module（4）Including：
Electric current comparing unit, the electric current comparing unit connect current value detection module（3）And by current value detection module（3）
The current value signals of output are compared with default a reference value, when current value signals are more than or less than default a reference value,
Electric current comparing unit output circuit conversion signal；
Current amplification unit, the current amplification unit connect electric current comparing unit and the circuit for exporting electric current comparing unit
Conversion signal exports after being amplified.
4. a kind of digital display tube that alarm function is compared with electric current according to claim 3, it is characterised in that also wrap
Include：
Alarming device（6）, the alarming device（6）Connect current amplification unit and in response to the electricity of current amplification unit output
Road conversion signal, the alarming device（6）Information warning is sent when receiving circuit conversion signal.
A kind of 5. digital display tube that alarm function is compared with electric current according to claim 4, it is characterised in that：It is described
Alarming device（6）Buzzer including connecting current amplification unit, the buzzer are sent when receiving circuit conversion signal
Buzzing alarming.
6. a kind of digital display tube that alarm function is compared with electric current according to claim 1, it is characterised in that also wrap
Include：
Current value display module（7）, the current value display module（7）Connect current value detection module（3）And to current value
Detection module（3）The electric current value information of detection is shown.
A kind of 7. aobvious pipe of number that alarm function is compared with electric current according to claim 6, it is characterised in that the electricity
Flow valuve display module（7）Including：
Electric current video-stream processor, the electric current video-stream processor connect current value detection module（3）And current value is detected into mould
Block（3）Exported after the current value signals analyzing and processing of output；
Current value displaying block, what the current value displaying block connected electric current video-stream processor and exported electric current video-stream processor
Current value signals are shown.
A kind of 8. aobvious pipe of number that alarm function is compared with electric current according to claim 1, it is characterised in that：It is described anti-
Penetrate lid（1）Be fixedly mounted on the bottom surface with multigroup locating rod（11）, the pcb board（2）Upper corresponding locating rod（11）Position be provided with
Locating rod（11）The locating slot of mutual cooperation（21）.
A kind of 9. aobvious pipe of number that alarm function is compared with electric current according to claim 1, it is characterised in that：It is described anti-
Penetrate lid（1）The locating piece of semi-cylindrical is installed with the side wall of side（12）, the pcb board（2）On be provided with and locating piece（12）
The fixing groove being adapted（22）, the locating piece（12）The diameter of upper end is less than the diameter of its lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682173.XA CN107358901A (en) | 2017-08-10 | 2017-08-10 | A kind of digital display tube that alarm function is compared with electric current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710682173.XA CN107358901A (en) | 2017-08-10 | 2017-08-10 | A kind of digital display tube that alarm function is compared with electric current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107358901A true CN107358901A (en) | 2017-11-17 |
Family
ID=60288463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710682173.XA Pending CN107358901A (en) | 2017-08-10 | 2017-08-10 | A kind of digital display tube that alarm function is compared with electric current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107358901A (en) |
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Application publication date: 20171117 |
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| RJ01 | Rejection of invention patent application after publication |