CN211456135U - Automatic power-off device - Google Patents
Automatic power-off device Download PDFInfo
- Publication number
- CN211456135U CN211456135U CN201922399151.XU CN201922399151U CN211456135U CN 211456135 U CN211456135 U CN 211456135U CN 201922399151 U CN201922399151 U CN 201922399151U CN 211456135 U CN211456135 U CN 211456135U
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- China
- Prior art keywords
- plug
- power
- jack
- wire loop
- temperature rise
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- Expired - Fee Related
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Abstract
The utility model provides an automatic power-off device. The automatic power-off device is suitable for linking at least one external wire loop with an electrical appliance. The automatic power-off device comprises a plug, a jack, a temperature sensor, a storage unit, a microprocessor and a power-off switch. The plug is used for being inserted into the electric wire loop, the electric equipment obtains the electric power provided by the electric wire loop through the jack, and the main material of the plug is copper. The temperature sensor is connected to the plug to acquire a temperature value of the plug. A memory cell, such as a flash memory, stores a normal temperature rise rate and a safe temperature rise range. The power-off switch is electrically connected between the plug and the jack, the microprocessor compares the difference between the actual rising rate of the temperature value of the plug and the normal temperature rising rate, and when the difference exceeds the safe temperature rising range, the microprocessor orders the power-off switch to disconnect the electrical connection between the plug and the jack.
Description
Technical Field
The utility model relates to a technical field of conflagration early warning particularly, relates to an auto-power-off device relevant with conflagration early warning.
Background
The electric wire fire is a common fire hazard, and mainly causes the electric wire to start heating and scalding when the power consumption exceeds the electric wire load, and a fire hazard is caused after a long time. However, current fire safety equipment does not have the function of early warning of a fire in an electric line.
Therefore, it is worth the thinking of those skilled in the art to design a device capable of warning the electric wire fire.
SUMMERY OF THE UTILITY MODEL
The utility model provides a problem provide an auto-power-off device that can early warning electric wire fire.
In order to solve the problem, the utility model provides an automatic power-off device. The automatic power-off device is suitable for linking at least one external wire loop with an electrical appliance. The automatic power-off device comprises a plug, a jack, a temperature sensor, a storage unit, a microprocessor and a power-off switch. The plug is used for being inserted into the electric wire loop, the electric equipment obtains the electric power provided by the electric wire loop through the jack, and the main material of the plug is copper. The temperature sensor is connected to the plug to acquire a temperature value of the plug. A memory cell, such as a flash memory, stores a normal temperature rise rate and a safe temperature rise range. The power-off switch is electrically connected between the plug and the jack, the microprocessor compares the difference between the actual rising rate of the temperature value of the plug and the normal temperature rising rate, and when the difference exceeds the safe temperature rising range, the microprocessor orders the power-off switch to disconnect the electrical connection between the plug and the jack.
In the above-mentioned auto-power-off device, a wireless communication chip is further included for sending out the temperature value of the plug.
Drawings
FIG. 1 is a block diagram of a circuit 7 of the auto-power-off device according to the present embodiment;
FIG. 2 is a schematic diagram of a wire loop;
fig. 3 is a perspective view of the auto-power-off device.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Referring to fig. 1, 2 and 3, fig. 1 is a block diagram of the auto-power-off device 10 of the present embodiment connected to the wire loop 7, fig. 2 is a schematic diagram of the wire loop 7, and fig. 3 is a perspective view of the auto-power-off device 10. The automatic power-off device 10 is adapted to connect at least one external wire loop 7 to an electrical apparatus 8.
The auto-power-off device 10 includes a plug 11, a jack 12, a temperature sensor 13, a storage unit 15, a microprocessor 16, and a power-off switch 19. The plug 11 is used for being inserted into the wire loop 7, and the electrical equipment 8 obtains the power provided by the wire loop 7 through the jack 12, and the main material of the plug 11 is copper. The temperature sensor 13 is connected to the plug 11 to obtain a temperature value of the plug 11. A memory unit 15 stores a normal temperature rise rate and a safe temperature rise range, and the memory unit 15 is, for example, a flash memory. The power-off switch 19 is electrically connected between the plug 11 and the jack 12, the microprocessor 16 compares the difference between the actual temperature rise rate of the plug 11 and the normal temperature rise rate, and when the difference exceeds the safe temperature rise range, the microprocessor 16 commands the power-off switch 19 to disconnect the electrical connection between the plug 11 and the jack 12.
Since the wire loop 7 and the plug 11 are both made of copper, the heat conduction rate is very fast, and when the wire loop 7 is energized to start heating the plug 11 will start heating, which will be reflected on the temperature measured by the temperature sensor 13. When the actual rate of rise of the temperature value of the plug 11 exceeds the normal rate of rise of the temperature, this is indicative of a situation in which the power line circuit 7 may have a charge exceeding the load of the power line, which may be a precursor to a fire. Therefore, the microprocessor 16 compares the difference between the actual temperature rise rate of the plug 11 and the normal temperature rise rate, and when the difference exceeds the safe temperature rise range recorded in the storage unit 15, the microprocessor 16 commands the power-off switch 19 to disconnect the electrical connection between the plug 11 and the jack 12, so that the electrical equipment 8 is no longer operated, and the temperature of the wire loop 7 is prevented from rising continuously. When the user notices that the electrical equipment 8 is no longer operating, the professional can be asked to check the electrical wire loop 7 to avoid further regret.
It should be noted that the reason why the power of the wire loop 7 exceeds the load of the wire may be many, for example, the wire loop 7 is bitten by a mouse to reduce the cross-sectional area of the wire. However, whatever the cause of the power exceeding the load of the electrical line, this will cause the actual rate of rise of the temperature value of the plug 11 to exceed the normal rate of rise of the temperature. Therefore, even if the user cannot visually observe the condition of the wire loop 7, the present invention can determine early whether the wire loop 7 has the problem of aging or corrosion. In addition, the normal temperature rise rate and the safe temperature rise range stored in the storage unit 15 may be values obtained by a manufacturer of the automatic power-off device 10 through a plurality of experiments in advance. In addition, the auto-power-off device 10 further includes a wireless communication chip 18, through the wireless communication chip 18, the auto-power-off device 10 can communicate with an external server 6, and when the manufacturer has the latest experimental value, the normal temperature rise rate and the safe temperature rise range stored in the storage unit 15 can be updated synchronously. Here, the wireless communication chip 18 is, for example, a communication chip conforming to the IEEE 802.11 standard.
In addition, as shown in fig. 3', the automatic power-off device 10 further includes an LED lamp 17, and when the difference between the actual rising rate of the temperature value of the plug 11 and the normal temperature rising rate exceeds the safe temperature rising range recorded in the storage unit 15, the microprocessor 16 commands the LED lamp 17 to be turned on.
Although the present disclosure has been described above, the scope of the present disclosure is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present disclosure, and these changes and modifications are intended to be within the scope of the present disclosure.
Claims (2)
1. An automatic power-off device adapted to connect an external electric wire loop with an electric appliance, comprising:
a plug for inserting the wire loop, wherein the plug is made of copper;
a jack, through which the electric equipment obtains the power provided by the wire loop;
a temperature sensor connected to the plug to obtain a temperature value of the plug;
a storage unit for storing a normal temperature rise rate and a safe temperature rise range;
a microprocessor connected to the temperature sensor and the storage unit, the microprocessor comparing the difference between the actual temperature rise rate of the temperature value of the plug and the normal temperature rise rate; and
a power-off switch electrically connected between the plug and the jack;
when the difference exceeds the safe temperature rise range, the microprocessor commands the power-off switch to disconnect the electrical connection between the plug and the jack.
2. The auto-power-off device as claimed in claim 1, wherein the auto-power-off device comprises a wireless communication chip for transmitting the temperature value of the plug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922399151.XU CN211456135U (en) | 2019-12-27 | 2019-12-27 | Automatic power-off device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922399151.XU CN211456135U (en) | 2019-12-27 | 2019-12-27 | Automatic power-off device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211456135U true CN211456135U (en) | 2020-09-08 |
Family
ID=72304947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922399151.XU Expired - Fee Related CN211456135U (en) | 2019-12-27 | 2019-12-27 | Automatic power-off device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211456135U (en) |
-
2019
- 2019-12-27 CN CN201922399151.XU patent/CN211456135U/en not_active Expired - Fee Related
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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: 20200908 Termination date: 20211227 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |