CN205753987U - DC conversion power - Google Patents
DC conversion power Download PDFInfo
- Publication number
- CN205753987U CN205753987U CN201620675981.4U CN201620675981U CN205753987U CN 205753987 U CN205753987 U CN 205753987U CN 201620675981 U CN201620675981 U CN 201620675981U CN 205753987 U CN205753987 U CN 205753987U
- Authority
- CN
- China
- Prior art keywords
- humidity
- humidity detection
- conversion power
- detection unit
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
The utility model discloses a kind of DC conversion power, solve housing and be in high humidity environment the problem being easily caused device damage for a long time, its drip irrigation device is, including for detecting whether the humidity outside housing arrives humidity warning value to export the humidity detection unit of Humidity Detection signal, it is coupled to humidity detection unit to receive Humidity Detection signal and export the control unit of control signal and be coupled to control unit to receive control signal the alarm unit in response to control signal, humidity detection unit has a reference value, reference value corresponds to humidity warning value, DC conversion power of the present utility model, humidity detection unit can be used for detecting the humidity condition outside DC conversion power housing；When humidity is too high, control unit can control alarm unit and sound the alarm, and to remind staff to take measures in time, it is to avoid equipment damages in high humidity environment, thus extends its service life.
Description
Technical field
This utility model relates to electronic technology field, particularly to DC conversion power.
Background technology
DC conversion power is to be another variable or fixed value by the DC voltage conversion of a scope or fixed value
The electric device of DC voltage, capacity of resisting disturbance is strong, reliability is high, output is big advantage that it has.
DC conversion power is usually required to carry out operation in a dry environment or deposit, if residing environment is excessively
Humidity, such as at plum rain season, the electronic devices and components accelerated ageing easily making enclosure interior is the most short-circuit, affects the normal of equipment
Run；Humidity can also invade inside IC from gaps such as pins through IC Plastic Package, produces IC hygroscopic effect, goes down for a long time, holds
It is easily caused IC resin-encapsulated cracking.
But staff is often to ambient humidity insensitive, causes DC conversion power to be in high humidity environment and nothing
Method is discovered in time, is greatly shortened its service life, therefore there is also certain room for improvement.
Utility model content
The purpose of this utility model be to provide a kind of can the DC conversion power of automatic warning when ambient humidity is too high.
Above-mentioned technical purpose of the present utility model has the technical scheme that
A kind of DC conversion power, including housing, also includes whether the humidity for detecting outside housing arrives humidity warning
Value is to export the humidity detection unit of Humidity Detection signal, to be coupled to humidity detection unit to receive Humidity Detection signal and to export
The control unit of control signal and be coupled to control unit to receive control signal the alarm unit in response to control signal, institute
Stating humidity detection unit and have a reference value, described reference value corresponds to humidity warning value；
When the humidity outside humidity detection unit detects housing arrives humidity warning value, described control unit controls warning
Unit warns.
Using such scheme, humidity detection unit can detect the humidity condition outside housing, and the humidity value that will detect
Compare with reference value；When the humidity detected outside housing arrives humidity warning value, it is single that control unit can control warning
Unit sends warning, to remind staff to take corresponding measure in time, it is to avoid DC conversion power is chronically at high humidity environment
And damage, thus increase its service life.
As preferably, described humidity detection unit includes humidity detection unit and for providing the comparing section of reference value；Described
Humidity detection unit changes for detecting the humidity outside housing to export moisture signal；Described comparing section be coupled to humidity detection unit with
Receive moisture signal, and export Humidity Detection signal to control unit after the value of moisture signal and reference value being compared.
Using such scheme, the humidity value that humidity detection unit can be recorded by comparing section is by exporting after comparing with reference value
Humidity Detection signal, to control unit, makes detection more accurate, moreover it is possible to avoid other small humidity changes extraneous to examine humidity
The detection surveying unit impacts.
As preferably, the outfan of described comparing section is coupled with the feedback section for improving reference value voltage.
Using such scheme, feedback section provides positive feedback signal for comparing section, makes comparing section in the humidity of output high level
After detection signal, improve the voltage of reference value, thus reduce the humidity warning value corresponding to reference value, it is to avoid Humidity Detection signal
Value fluctuate near humidity warning value.
As preferably, described comparing section is also coupled to the regulation portion for regulating reference value.
Using such scheme, regulation portion can adjust the reference value of comparing section, thus regulate the sensitive of humidity detection unit
Degree, to adapt to different operating mode.
As preferably, described alarm unit is sounding alarm.
Using such scheme, sounding alarm is more easy to cause the attention of staff, to remind DC conversion power currently
It is in high humidity environment, the alarming effect of further improving warning unit.
As preferably, described control unit has been also coupled to for receiving control signal and in response to control signal to cut off directly
The performance element of stream conversion electric power.
Use such scheme, when DC conversion power is in high humidity environment, if working on, can be increased it and be short-circuited
Risk, now performance element can cut off the current supply circuit of DC conversion power in time, it is to avoid dangerous occurs.
As preferably, described regulation portion is that electric resistance partial pressure regulates circuit.
Using such scheme, electric resistance partial pressure regulation circuit structure is simple, low cost, and is prone to the later stage and safeguards.
In sum, this utility model has the advantages that humidity detection unit can be for detecting direct current conversion
Humidity condition outside power shell；When humidity is too high, control unit can control alarm unit and sound the alarm, to remind work
Make personnel to take measures in time, it is to avoid equipment damages in high humidity environment, thus extend its service life.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model；
Fig. 2 is the circuit diagram of performance element in this utility model.
In figure: 1, control unit；2, alarm unit；3, humidity detection unit；4, comparing section；5, feedback section；6, regulation portion；7、
Performance element.
Detailed description of the invention
Below in conjunction with accompanying drawing, this utility model is described in further detail.
This specific embodiment is only that it is not to restriction of the present utility model, ability to explanation of the present utility model
The present embodiment can be made after reading this specification by field technique personnel as required does not has the amendment of creative contribution, but
As long as all being protected by Patent Law in right of the present utility model.
Disclosed in the present embodiment, a kind of DC conversion power, as it is shown in figure 1, include housing, also includes for detecting housing
Whether outer humidity arrives humidity warning value to export the humidity detection unit of Humidity Detection signal, to be coupled to humidity detection unit
To receive Humidity Detection signal and export the control unit 1 of control signal and be coupled to control unit 1 to receive control signal also
In response to the alarm unit 2 of control signal, humidity detection unit has a reference value, and reference value corresponds to humidity warning value；When
Humidity detection unit detects that when the humidity outside housing arrives humidity warning value, control unit 1 controls alarm unit 2 and warns
Show.
Humidity detection unit can detect the humidity condition outside housing, and is compared with reference value by the humidity value detected
Relatively；When the humidity detected outside housing arrives humidity warning value, control unit 1 can control alarm unit 2 and send warning, with
Staff is reminded to take corresponding measure in time, it is to avoid DC conversion power is chronically at high humidity environment and damages, thus increases
Add its service life.
As it is shown in figure 1, humidity detection unit includes humidity detection unit 3 and for providing the comparing section 4 of reference value.
As it is shown in figure 1, humidity detection unit 3 changes for detecting the humidity outside housing to export moisture signal.Humidity Detection
Portion 3 includes humistor Rs, resistance R6 and R7, and one end of resistance R7 is coupled to voltage V2, and the other end is coupled to humistor Rs
One end, the other end ground connection of humistor Rs, one end of resistance R6 is coupled to humistor Rs and the junction point of resistance R7, separately
One end output moisture signal is to comparing section 4, and the outfan of resistance R6 is also by electric capacity C2 ground connection.Humistor is to utilize wet sensitive material
Material absorbs the moisture in air and causes resistance value own to change what this principle was made.Wherein humistor Rs is preferably adopted
Using lithium chloride humistor, place it in tested air, when air humidity increases, then lithium chloride water absorption increases, and leads
Electrically strengthen, make the resistance of humistor Rs reduce；Otherwise, resistance increases.
Humistor Rs and resistance R7 constitute bleeder circuit, when the humidity of DC conversion power casing surroundings rises,
The resistance of humistor Rs reduces, and the junction point voltage between itself and resistance R7 decreases；On the contrary, work as the wet of casing surroundings
When degree declines, the resistance of humistor Rs increases, and the junction point voltage between itself and resistance R7 rises therewith.Wherein electric capacity C2 rises
The effect of voltage regulation filtering, resistance R6 is current-limiting resistance.
As it is shown in figure 1, comparing section 4 is coupled to humidity detection unit 3 to receive moisture signal, and by the value of moisture signal and base
Quasi-value exports Humidity Detection signal to control unit 1 after comparing.Comparing section 4 is comparator U, the anti-phase input of comparator U
End is coupled to the junction point of resistance R6 and electric capacity C2, and outfan exports Humidity Detection signal to control unit 1 by resistance R4.Electricity
Resistance R4 plays metering function.
As it is shown in figure 1, comparing section 4 is also coupled to the regulation portion 6 for regulating reference value.Regulation portion 6 includes variable resistance
R1, variable resistance R3 and electric capacity C1, a end of variable resistance R1 is coupled to voltage V1, and b end is coupled to a end of variable resistance R3；Can
The b end ground connection of power transformation resistance R3, the junction point of variable resistance R1 and variable resistance R3 is coupled to the in-phase input end of comparator U.
Variable resistance R1 Yu R3 together constitutes bleeder circuit, can be regulated between the two by the resistance of regulation R1 Yu R3
Junction point voltage, this voltage acts on the in-phase input end of comparator U as the reference value of humidity detection unit, and it corresponds to
The humidity warning value of housing, and magnitude of voltage is the highest, corresponding humidity warning value is the lowest.
The two ends of variable resistance R3 are also parallel with electric capacity C1, electric capacity C1 and play pressure stabilization function, make variable resistance R3 adjust
During joint, the voltage at its two ends can more be stablized.
As it is shown in figure 1, the outfan of comparing section 4 is coupled with the feedback section 5 for improving reference value voltage.Feedback section 5 is wrapped
Including variable resistance R2 and diode D1, the anode of diode D1 is coupled to the outfan of comparator U, and negative electrode is coupled to variable resistance
The a end of R2, the b end of variable resistance R2 is coupled to the in-phase input end of comparator U.
Positive feedback loop is defined, when comparator U exports high level, by just by diode D1 and variable resistance R2
Output signal is added to the in-phase input end of comparator U by feedback circuit, makes the voltage of in-phase input end raise；Wherein diode
D1 plays one-way conduction effect, prevents voltage V1 from pouring in down a chimney the outfan to comparator U；Resistance by regulation variable resistance R2 is permissible
Change the size of current being flowed into comparator U in-phase input end, thus regulate the value of positive feedback voltage.
Control unit 1 includes audion Q, relay K and sustained diode 2, and one end of the coil of relay K is coupled to
Voltage V3, the other end is coupled to the colelctor electrode of audion Q, and the base stage of audion Q is coupled to the outfan of comparing section 4, emitter stage
Ground connection；Sustained diode 2 and the coil inverse parallel of relay K.
As it is shown in figure 1, alarm unit 2 is sounding alarm.Alarm unit 2 includes resistance R8, buzzer SP and relay K
Normally opened contact K-1, one end of resistance R8 is coupled to voltage V4, and the other end is coupled to the anode of buzzer SP, buzzer SP's
Negative electrode is coupled to one end of the normally opened contact K-1 of relay K, the other end ground connection of the normally opened contact K-1 of relay K.
As in figure 2 it is shown, control unit 1 has been also coupled to for receiving control signal and in response to control signal to cut off direct current
The performance element 7 of conversion electric power.Performance element 7 is the normally-closed contact K-2 of relay K, and it is series at the confession of DC conversion power
Electricity loop.The current supply circuit of DC conversion power is also in series with the normally opened button SB1 for start and stop DC conversion power, and Guan Bi is often
Open button SB1 and can start DC conversion power, otherwise, close DC conversion power.
In sum, DC conversion power is under normal humidity environment, and the resistance of humistor Rs is higher, makes comparator U
The voltage of inverting input is more than the voltage of its normal phase input end, the at this moment Humidity Detection signal of comparator U output low level.When
When humidity around DC conversion power increases, the resistance of humistor Rs being arranged at outside housing reduces therewith, makes to act on
On comparator U, the voltage of inverting input reduces；When humidity exceedes humidity warning value, the voltage of inverting input is just less than
The voltage of normal phase input end, makes the Humidity Detection signal of comparator U output high level to the base stage of audion Q, makes audion Q lead
Logical, the coil of relay K obtains electric adhesive, the normally opened contact K-1 Guan Bi of its correspondence, makes buzzer SP conducting report to the police, normally-closed contact
K-2 disconnects, and to cut off the current supply circuit of DC conversion power so that it is out of service, thus guarantees safety.
The outfan of comparator U makes the voltage of in-phase input end raise by feedback section 5 simultaneously, so that direct current conversion electricity
The recovery humidity in source, less than original humidity warning value, can regulate the height recovering humidity by the resistance of regulation variable resistance R2
Low.
Ambient humidity is during declining, and the resistance of humistor Rs is being continuously increased, so that comparator U's is anti-phase
Input terminal voltage constantly raises, and when humidity drops to less than the recovery humidity of original humidity warning value, comparator U's is anti-phase defeated
Enter terminal voltage and could be more than the voltage of its normal phase input end, make the Humidity Detection signal of comparator U output low level to audion Q
Base stage, make audion Q end, the coil losing electricity of relay K resets, and the normally opened contact K-1 of its correspondence disconnects, and cuts off buzzer
The current supply circuit of SP, makes alarm unit 2 stop alarm, and the normally-closed contact K-2 of relay K re-closes simultaneously, if at this moment pressing
Normally opened button SB1, DC conversion power can normally start.
Claims (7)
1. a DC conversion power, including housing, is characterized in that: also include whether the humidity for detecting outside housing arrives wet
Degree warning value is to export the humidity detection unit of Humidity Detection signal, to be coupled to humidity detection unit to receive Humidity Detection signal
And export the control unit (1) of control signal and be coupled to control unit (1) to receive control signal and in response to control signal
Alarm unit (2), described humidity detection unit has a reference value, described reference value correspond to humidity warning value；
When the humidity outside humidity detection unit detects housing arrives humidity warning value, described control unit (1) controls warning
Unit (2) warns.
DC conversion power the most according to claim 1, is characterized in that: described humidity detection unit includes humidity detection unit
(3) with for providing the comparing section (4) of reference value；Described humidity detection unit (3) changes for detecting the humidity outside housing with defeated
Go out moisture signal；Described comparing section (4) is coupled to humidity detection unit (3) to receive moisture signal, and by the value of moisture signal with
Reference value exports Humidity Detection signal to control unit (1) after comparing.
DC conversion power the most according to claim 2, is characterized in that: the outfan of described comparing section (4) is coupled with use
In the feedback section (5) improving reference value voltage.
DC conversion power the most according to claim 3, is characterized in that: described comparing section (4) has been also coupled to for regulating
The regulation portion (6) of reference value.
DC conversion power the most according to claim 4, is characterized in that: described alarm unit (2) is sounding alarm.
DC conversion power the most according to claim 5, is characterized in that: described control unit (1) has been also coupled to for connecing
Receive control signal and in response to control signal to cut off the performance element (7) of DC conversion power.
DC conversion power the most according to claim 4, is characterized in that: described regulation portion (6) is electric resistance partial pressure regulation electricity
Road.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620675981.4U CN205753987U (en) | 2016-06-29 | 2016-06-29 | DC conversion power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620675981.4U CN205753987U (en) | 2016-06-29 | 2016-06-29 | DC conversion power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205753987U true CN205753987U (en) | 2016-11-30 |
Family
ID=57379550
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620675981.4U Active CN205753987U (en) | 2016-06-29 | 2016-06-29 | DC conversion power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205753987U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730523A (en) * | 2020-12-22 | 2021-04-30 | 苏州鸿本生物环保科技有限公司 | Humidity detection system |
-
2016
- 2016-06-29 CN CN201620675981.4U patent/CN205753987U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112730523A (en) * | 2020-12-22 | 2021-04-30 | 苏州鸿本生物环保科技有限公司 | Humidity detection system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205753987U (en) | DC conversion power | |
| CN204389129U (en) | Sealing cabin perforate automatic detection device | |
| CN202551167U (en) | Automatic power off device of wet cell phone | |
| CN204720956U (en) | A kind of three-phase uninterrupted power supply with lack detection circuit | |
| CN202127845U (en) | Coat for detecting mashgas underground | |
| CN209387736U (en) | The exchange wire breakage detector and system of robot | |
| CN103267592A (en) | Temperature and humidity detection system of small grain bins | |
| CN103777145A (en) | Storage battery intelligent monitoring and maintenance apparatus with functions of testing voltage and load discharge | |
| CN202937485U (en) | Ceiling fan monitoring device | |
| CN205656157U (en) | Touch -sensitive screen ticket distributing position | |
| CN207456507U (en) | A kind of outdoor full color LED display screen monitoring device | |
| CN207067373U (en) | Voltage monitoring instrument calibrating installation | |
| CN206740288U (en) | A kind of acquisition device of pointer pressure information | |
| CN206672325U (en) | A kind of intelligent safety and defence system | |
| CN104780637A (en) | Control circuit and lighting device | |
| CN206002220U (en) | There is the temperature transmitter of DTU broken string alarm | |
| CN205195242U (en) | Secondary overvoltage protection device of current transformer | |
| CN205578252U (en) | Wind -powered electricity generation blade vacuum pump rough vacuum alarm device | |
| CN205748609U (en) | Traceable electronic scale circuit | |
| CN203720559U (en) | Double-trigger MCU control circuit | |
| CN103169156B (en) | Ash tray with voice reminding function | |
| CN204576145U (en) | Frequency self-adaption microcomputer protecting device | |
| CN206805332U (en) | A kind of device for adjusting computer room temperature humidity | |
| CN206863523U (en) | Mine air environmental monitoring system | |
| CN110568371B (en) | Electric quantity detection circuit and method for fire detection alarm |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |