CN209337929U - A kind of explosion-proof lift light curtain - Google Patents
A kind of explosion-proof lift light curtain Download PDFInfo
- Publication number
- CN209337929U CN209337929U CN201822132597.1U CN201822132597U CN209337929U CN 209337929 U CN209337929 U CN 209337929U CN 201822132597 U CN201822132597 U CN 201822132597U CN 209337929 U CN209337929 U CN 209337929U
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- China
- Prior art keywords
- management chip
- power management
- explosion
- light curtain
- receiving end
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- 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.)
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Abstract
The utility model relates to a kind of explosion-proof lift light curtains, including transmitting terminal and receiving end, the transmitting terminal and receiving end are connected with respective power supply respectively, the power supply includes that the identical power circuit in three tunnels is formed in parallel, the power circuit is made of power management chip, the input terminal of the power management chip connects input voltage, and output end connects transmitting terminal and/receiving end, and the power management chip is used to the input voltage of input terminal carrying out reduced output voltage.The utility model can reduce the operating current of light curtain.
Description
Technical field
The utility model relates to a kind of light curtains, more particularly to a kind of explosion-proof lift light curtain.
Background technique
For the operating current of existing elevator light curtain generally in 100mA or so, explosion-proof lift requires the operating current of light curtain cannot
Greater than 20mA, therefore need a kind of explosion-proof lift light curtain.
Utility model content
The technical problem to be solved by the utility model is to provide a kind of explosion-proof lift light curtains, can reduce the work of light curtain
Make electric current.
The technical scheme adopted by the utility model to solve the technical problem is as follows: providing a kind of explosion-proof lift light curtain, wrap
Transmitting terminal and receiving end are included, the transmitting terminal and receiving end are connected with respective power supply respectively, and the power supply includes three Lu Xiangtong
Power circuit be formed in parallel, the power circuit is made of power management chip, and the input terminal of the power management chip connects
Connect input voltage, output end connects transmitting terminal and/receiving end, the power management chip be used for by the input voltage of input terminal into
Row reduced output voltage.
A diode is additionally provided between the input terminal and input voltage of the power management chip.
The input terminal of the power management chip also passes through two capacity earths parallel with one another.
The output end of the power management chip also passes through two capacity earths parallel with one another.
The power management chip is realized using LM1117, for input voltage to be depressurized to 3.3V.
Beneficial effect
Due to the adoption of the above technical solution, the utility model compared with prior art, has the following advantages that and accumulates
Pole effect: the utility model passes through power management chip for the voltage drop of 12V as low as 3.3V, passes through and increases input power (12V)
Reduce input current with the voltage difference of out-put supply (3.3V), to guarantee that the input current on every road is less than 20mA, to meet
The requirement of explosion-proof lift.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the power circuit diagram of transmitting terminal and receiving end in the utility model.
Specific embodiment
The present invention will be further illustrated below in conjunction with specific embodiments.It should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model.In addition, it should also be understood that, in the content for having read the utility model instruction
Later, those skilled in the art can make various changes or modifications the utility model, and such equivalent forms equally fall within this Shen
It please the appended claims limited range.
The embodiments of the present invention is related to a kind of explosion-proof lift light curtain, as shown in Figure 1, including transmitting terminal and reception
End, the transmitting terminal and receiving end are connected with respective power supply respectively.As shown in Fig. 2, the power supply includes the identical electricity in three tunnels
Source circuit is formed in parallel, and the power circuit is made of power management chip, and the input terminal connection of the power management chip is defeated
Enter voltage, output end connects transmitting terminal and/receiving end, and the power management chip is for dropping the input voltage of input terminal
Pressure output.
In present embodiment, a diode is additionally provided between the input terminal and input voltage of the power management chip
(D1, D2, D3) can be prevented from being reversely connected, and can be eliminated a little noise jamming by the diode.The power management chip
Input terminal also pass through two capacitors (C1 and E1, C12 and E3, C13 and E12) ground connection parallel with one another.The power management core
The output end of piece also passes through two capacitors parallel with one another (C2 and E2, C21 and E21, C23 and E5) ground connection, simultaneously by this two groups
The capacitor of connection can filter out the interference signal of power management chip input terminal and output end.
Power management chip uses LM1117-3.3V in present embodiment, which can be depressured to 12V 3.3V, and
The late-class circuit of this system all uses 3.3V to power, by the voltage for increasing input power (12V) and out-put supply (3.3V)
Difference reduces input current, guarantees that the input current on every road is less than 20mA with this.
Claims (5)
1. a kind of explosion-proof lift light curtain, including transmitting terminal and receiving end, the transmitting terminal and receiving end respectively with respective electricity
Source is connected, which is characterized in that the power supply includes that the identical power circuit in three tunnels is formed in parallel, and the power circuit is by power supply pipe
It manages chip to constitute, the input terminal of the power management chip connects input voltage, and output end connects transmitting terminal and/receiving end, institute
Power management chip is stated for the input voltage of input terminal to be carried out reduced output voltage.
2. explosion-proof lift light curtain according to claim 1, which is characterized in that the input terminal of the power management chip with
A diode is additionally provided between input voltage.
3. explosion-proof lift light curtain according to claim 1, which is characterized in that the input terminal of the power management chip is also
Pass through two capacity earths parallel with one another.
4. explosion-proof lift light curtain according to claim 1, which is characterized in that the output end of the power management chip is also
Pass through two capacity earths parallel with one another.
5. explosion-proof lift light curtain according to claim 1, which is characterized in that the power management chip uses LM1117
It realizes, for input voltage to be depressurized to 3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132597.1U CN209337929U (en) | 2018-12-18 | 2018-12-18 | A kind of explosion-proof lift light curtain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822132597.1U CN209337929U (en) | 2018-12-18 | 2018-12-18 | A kind of explosion-proof lift light curtain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209337929U true CN209337929U (en) | 2019-09-03 |
Family
ID=67757635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822132597.1U Active CN209337929U (en) | 2018-12-18 | 2018-12-18 | A kind of explosion-proof lift light curtain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209337929U (en) |
-
2018
- 2018-12-18 CN CN201822132597.1U patent/CN209337929U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191128 Address after: 315800 No.1-1, building 1, no.8-6, Wanquanhe Road, Xiapu, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo saifute Electronic Co., Ltd Address before: 315800 Zhejiang Province, Ningbo city Beilun District Xiapu Wanquanhe Road No. 1 Building No. 1 8-6 Patentee before: Ningbo Safety Electronic Co., Ltd. |
|
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 315800 4th floor, No.1, building 2, No.51 Longtanshan Road, Daqi street, Beilun District, Ningbo City, Zhejiang Province Patentee after: Ningbo saifute Electronic Co.,Ltd. Address before: 315800 No.1-1, building 1, no.8-6 Wanquanhe Road, Xiapu, Beilun District, Ningbo City, Zhejiang Province Patentee before: Ningbo saifute Electronic Co.,Ltd. |