CN207472952U - A kind of power-fail detection circuit and protection circuit - Google Patents
A kind of power-fail detection circuit and protection circuit Download PDFInfo
- Publication number
- CN207472952U CN207472952U CN201721470759.1U CN201721470759U CN207472952U CN 207472952 U CN207472952 U CN 207472952U CN 201721470759 U CN201721470759 U CN 201721470759U CN 207472952 U CN207472952 U CN 207472952U
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- module
- power
- output terminal
- triode
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Abstract
The utility model discloses a kind of power-fail detection circuit and protection circuits, including power module, bulkhead lamp, detection module, PWM control modules, Voltage stabilizing module and alarm module, one output terminal of the power module and the input terminal of detection module connect, another output terminal of the power module and the input terminal of Voltage stabilizing module connect, one output terminal of the detection module is connect with alarm module, its another output terminal is connect with PWM control modules, the output terminal of the PWM control modules and an input terminal of bulkhead lamp connect, another input terminal connection Voltage stabilizing module of the bulkhead lamp；The utility model provides the circuit that a kind of power down to bulkhead lamp is detected and protects, and bulkhead lamp is avoided to be damaged due to unexpected power down.
Description
The utility model is related to circuit detection and protection technique field more particularly to a kind of power-fail detection circuit and protection electricity
Road.
Background technology
In the production operation area of factory, mine, warehouse or high canopy, bulkhead lamp often occurs because of power-off, dead electricity or electricity
Various power down failures and the cisco unity malfunction such as can't meet the quality requirement situation, therefore need to examine added with power down in circuit
Brake and defencive function.However in the prior art, the circuit with detection function is formed complicated, and is lacked because power down causes
Bulkhead lamp damage safeguard measure.
Utility model content
The utility model overcomes the deficiencies in the prior art, provides a kind of power-fail detection circuit and protection circuit.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is as follows：
A kind of power-fail detection circuit and protection circuit, including power module and bulkhead lamp, which is characterized in that further include detection
Module, PWM control modules, Voltage stabilizing module and alarm module, an output terminal of the power module and the input of detection module
The input terminal of end connection, another output terminal and Voltage stabilizing module connects, an output terminal and the warning mould of the detection module
Block connects, another output terminal connect with PWM control modules, the output terminal of the PWM control modules and one of bulkhead lamp
Input terminal connects, another input terminal of the Voltage stabilizing module and bulkhead lamp connects.
Further, the detection module include first resistor, second resistance and 3rd resistor and the first triode and
Second triode, first triode are located between first resistor and second resistance, the second triode be located at second resistance and
Between 3rd resistor.
First triode and the second triode use NPN silicon pipe.
Further, the Voltage stabilizing module includes voltage-stablizer, model TPS7A4901.
Further, the Voltage stabilizing module output voltage is 5V.
Further, the alarm module is alarm or LED light.
The beneficial effects of the utility model are：By power module, detection module, PWM control modules, Voltage stabilizing module, warning
Module is connected with bulkhead lamp, forms detection of power loss and protection circuit.Detection module detects the power-down conditions of bulkhead lamp, alarm module
Remind user's bulkhead lamp power down.When bulkhead lamp power down, burning voltage is defeated in Voltage stabilizing module holding power-supply device certain time
Go out, bulkhead lamp is avoided to be damaged due to unexpected power down, PWM control modules stop output current, and timely termination circuit operation ensures
The safety of entire circuit.
Description of the drawings
Fig. 1 is the integrated circuit figure of the utility model.
Fig. 2 is detection circuit figure.
Specific embodiment
The utility model is further illustrated with reference to the accompanying drawings and detailed description.
As shown in Figure 1, a kind of power-fail detection circuit and protection circuit, including power module, bulkhead lamp, detection module, PWM
Control module, Voltage stabilizing module and alarm module.One output terminal of the power module and the input terminal of detection module connect, institute
The input terminal of another output terminal and Voltage stabilizing module for stating power module connects.One output terminal of the detection module and warning
Module connects, another output terminal is connect with PWM control modules.The output terminal of the PWM control modules and the one of bulkhead lamp
A input terminal connection, another input terminal connection Voltage stabilizing module of the bulkhead lamp.
After power down phenomenon occurs for the bulkhead lamp, when the power module is power-down to threshold value, the detection module output
Low level sends power-off signal to alarm module, and alarm module receives power-off signal, plays the role of detection circuit power down.
The detection module includes first resistor R1, second resistance R2,3rd resistor R3, the first triode U1 and the two or three
Pole pipe U2.The first triode U1 is located between first resistor R1 and second resistance R2, and the second triode U2 is located at the second electricity
Between resistance R2 and 3rd resistor R3.The first triode U1 and the second triode U2 uses NPN silicon pipe.Two triodes are set
Make information warning more accurate.When bulkhead lamp normal operation, the first resistor R1, second resistance R2 and 3rd resistor R3 are carried out
The first triode U1 is connected in partial pressure, the voltage at the first resistor R1 both ends, and the voltage at the second resistance R2 both ends makes the
Two triode U2 are connected, and the first triode U1 and the second triode U2 is made to export high level signal, alarm module to alarm module
It closes.
The alarm module is alarm or LED light.After power down phenomenon occurs for the bulkhead lamp, the power module falls
Electricity is to threshold value, the first triode U1 and the second triode U2 output low level signals in the detection module.Work as alarm module
During for alarm, the alarm receives low level signal, sounds the alarm.When alarm module is LED light, the LED light
Low level signal is received, starts bright light.Alarm module plays the role of reminding user.
When power down occurs for bulkhead lamp, PWM control modules receive the power-off signal that detection module is sent out, the power-off signal
PWM control modules is made to stop output pwm signal, and then stop the electric current input of power module, it can fast break.
The Voltage stabilizing module includes voltage-stablizer, the voltage-stablizer model TPS7A4901, the Voltage stabilizing module output voltage
For 5V.When power down occurs for bulkhead lamp, slow down the rate of decay of output voltage, normal voltage can be kept within the regular hour,
Bulkhead lamp is avoided to be damaged due to unexpected power down.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
Art personnel without departing from the concept of the premise utility, can also make several improvements and modifications, these improvements and modifications
Also it should be regarded as in scope of protection of the utility model.
Claims (6)
1. a kind of power-fail detection circuit and protection circuit, including power module and bulkhead lamp, which is characterized in that further include detection mould
Block, PWM control modules, Voltage stabilizing module and alarm module, an output terminal of power module and the input terminal of detection module connect,
The input terminal of its another output terminal and Voltage stabilizing module connects, and an output terminal of detection module is connect with alarm module, another
One output terminal is connect with PWM control modules, and the output terminal of PWM control modules and bulkhead lamp input terminal connect, voltage stabilizing
Another of module and bulkhead lamp input terminal connect.
2. a kind of power-fail detection circuit according to claim 1 and protection circuit, it is characterised in that：The detection module packet
First resistor, second resistance and 3rd resistor and the first triode and the second triode are included, first triode is located at
Between one resistance and second resistance, the second triode is located between second resistance and 3rd resistor.
3. a kind of power-fail detection circuit according to claim 2 and protection circuit, it is characterised in that：First triode
NPN silicon pipe is used with the second triode.
4. a kind of power-fail detection circuit according to claim 1 and protection circuit, it is characterised in that：The Voltage stabilizing module packet
Include voltage-stablizer, model TPS7A4901.
5. a kind of power-fail detection circuit according to claim 1 and protection circuit, it is characterised in that：The Voltage stabilizing module is defeated
Go out voltage for 5V.
6. a kind of power-fail detection circuit according to claim 1 and protection circuit, it is characterised in that：The alarm module is
Alarm or LED light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721470759.1U CN207472952U (en) | 2017-11-07 | 2017-11-07 | A kind of power-fail detection circuit and protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721470759.1U CN207472952U (en) | 2017-11-07 | 2017-11-07 | A kind of power-fail detection circuit and protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207472952U true CN207472952U (en) | 2018-06-08 |
Family
ID=62263320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721470759.1U Expired - Fee Related CN207472952U (en) | 2017-11-07 | 2017-11-07 | A kind of power-fail detection circuit and protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207472952U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231508A (en) * | 2019-07-09 | 2019-09-13 | 和记奥普泰通信技术有限公司 | Packetizing OTN, PTN, IPRAN, SPN and PON device looses power alarm detection method |
-
2017
- 2017-11-07 CN CN201721470759.1U patent/CN207472952U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110231508A (en) * | 2019-07-09 | 2019-09-13 | 和记奥普泰通信技术有限公司 | Packetizing OTN, PTN, IPRAN, SPN and PON device looses power alarm detection method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180608 Termination date: 20191107 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |