CN218217098U - Power module with surge detection function - Google Patents
Power module with surge detection function Download PDFInfo
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- CN218217098U CN218217098U CN202222268112.8U CN202222268112U CN218217098U CN 218217098 U CN218217098 U CN 218217098U CN 202222268112 U CN202222268112 U CN 202222268112U CN 218217098 U CN218217098 U CN 218217098U
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Abstract
The utility model discloses a power module with surge detection function, which comprises a control module, a filtering module, a main power module and a sampling module; the sampling module comprises a current detection amplifier, a capacitor C2, a resistor R3, a resistor R4 and a resistor R5. The utility model discloses a filtering module, main power module, control module, sampling module, alarm module and auxiliary power module's cooperation has realized the monitoring and the early warning of surge current-voltage in the circuit, has ensured power module and consumer's safety, avoids the consumer to damage. The utility model has the characteristics of small, the circuit is simple and easy, at the bottom of the consumption, work efficiency is high.
Description
Technical Field
The utility model relates to a power technical field, concretely relates to power module with surge detects function.
Background
The switch power supply module is a power electronic circuit, and achieves the purpose of stabilizing output voltage by adopting modern electronic technology and the on-off time ratio of a power switch tube.
The power module is widely applied to various low-power electronic devices, along with the development of the technology, the research and development and production technology of the power module is more mature, meanwhile, the requirements of electric equipment on the quality of the output electric energy of the power module are more strict, and many electric equipment can normally work after the original electric energy is converted and filtered, so that the power module is required to have higher stability.
Generally, a power module loads a filter circuit in a circuit to improve the electromagnetic compatibility of the device, and for mobile or outdoor devices, a coping manner with a complex electromagnetic environment needs to be considered, and a filter is loaded before a mains supply is connected to the power module in a common manner, so that the protection performance of the filter or the filter circuit is particularly important for the quality of a power supply output by the power module.
However, inevitably, the protection performance of the filter or the filter circuit is reduced along with the number of times of bearing surge current and the surge intensity, and if the problem of loss of the filter or the filter circuit cannot be found in time, the output voltage of the power supply module is unstable, the working stability of the electric equipment is affected, and even permanent damage is caused to the electric equipment.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model provides a power module with surge detects function.
A power module with a surge detection function comprises a control module, a filtering module, a main power supply module and a sampling module, wherein the filtering module is connected with the main power supply module, and the sampling module is respectively connected with the main power supply module and the control module; wherein the content of the first and second substances,
the sampling module comprises a current detection amplifier, a capacitor C2, a resistor R3, a resistor R4 and a resistor R5;
the output end of the main power supply module is sequentially connected with a resistor R2, a resistor R3 and a resistor R4;
an RS + pin of the current detection amplifier is connected with an input end of the resistor R2, and an RS-pin of the current detection amplifier is connected with an output end of the resistor R2;
the OUT pin of the current detection amplifier is respectively connected with the resistor R5, the capacitor C2 and the input end of the control module;
and the output end of the resistor R4 is connected with the input end of the control module.
Preferably, the filter module comprises a gas discharge tube GDT, a voltage dependent resistor R1 and an inductor L1;
gas discharge tube GDT, piezo-resistor R1 and inductance L1 connect gradually, inductance L1's output with main control unit's IN pin is connected.
Preferably, the system further comprises an alarm module; the alarm module comprises a resistor R6 and an LED lamp; the input end of the control module is sequentially connected with the resistor R6 and the LED lamp.
Preferably, the system further comprises an auxiliary power supply module; and the auxiliary power supply module is respectively connected with the control module, the current detection amplifier and a VCC pin of the main power supply unit.
The beneficial effects of the utility model embody: the utility model discloses a filtering module, main power module, control module, sampling module, alarm module and auxiliary power module's cooperation has realized the monitoring and the early warning of surge current-voltage in the circuit, has ensured power module and consumer's safety, avoids the consumer to damage. The utility model has the characteristics of small, the circuit is simple and easy, at the bottom of the consumption, work efficiency is high.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a system block diagram of a power module with surge detection function according to the present invention;
fig. 2 is a circuit diagram of a power module with surge detection function according to the present invention.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.
A power module with a surge detection function comprises a control module, a filtering module, a main power supply module and a sampling module, wherein the filtering module is connected with the main power supply module, and the sampling module is respectively connected with the main power supply module and the control module; wherein, the first and the second end of the pipe are connected with each other,
the sampling module comprises a current detection amplifier, a capacitor C2, a resistor R3, a resistor R4 and a resistor R5;
the output end of the main power supply module is sequentially connected with a resistor R2, a resistor R3 and a resistor R4;
an RS + pin of the current detection amplifier is connected with the input end of the resistor R2, and an RS-pin of the current detection amplifier is connected with the output end of the resistor R2;
the OUT pin of the current detection amplifier is respectively connected with the resistor R5, the capacitor C2 and the input end of the control module;
and the output end of the resistor R4 is connected with the input end of the control module.
The working principle is as follows:
RS-and RS + pins of the current detection amplifier are respectively connected to two ends of the resistor R2, and can collect voltages at two ends of the resistor R2; the output end of the current detection amplifier can output current, voltage is generated through the resistor R5 and the capacitor C2, the voltage can be identified by the control module, and the current in the output circuit can be detected because the voltage is in direct proportion to the voltage at the two ends of the R2 and the current output by the current detection amplifier is known;
the control module can sample a voltage signal between the resistor R3 and the resistor R4, so that the voltage in the output circuit can be detected.
In this embodiment, the filtering module includes a gas discharge tube GDT, a voltage dependent resistor R1, and an inductor L1; gas discharge tube GDT, piezo-resistor R1 and inductance L1 connect gradually, inductance L1's output with main power module's IN pin is connected.
The impact of surge current and voltage can be resisted through the filtering module so as to achieve the protection purpose.
In this embodiment, the system further comprises an alarm module; the alarm module comprises a resistor R6 and an LED lamp; the input end of the control module is sequentially connected with the resistor R6 and the LED lamp.
Inputting surge current into a power supply module, releasing surge energy by a filtering module, acquiring current voltage by an acquisition module and sending the data to a control module, judging whether the current voltage fluctuates or not by the control module, if so, normally working by the power supply module, and if not, sending an alarm signal by the control module to drive an LED to light for a preset time so as to achieve an early warning effect;
when the input power end power supply is disconnected, the auxiliary power supply module intervenes to work to provide power for the power supply module, the sampling module detects current and voltage and sends the data to the control module, whether the data deviate and are preset or not is judged under control, if not, the power end power supply is normally disconnected, if yes, the power end power supply is abnormally disconnected, the control module sends an alarm signal to drive the LED to be normally on, and therefore the early warning effect is achieved.
In this embodiment, the power supply further includes an auxiliary power supply module; the auxiliary power supply module is respectively connected with the control module, the current detection amplifier and a VCC pin of the main power supply unit,
the standby power can be provided through the power supply module, when no voltage is input into the main power supply module, the auxiliary voltage can drive the control module and the sampling module to continuously work, so that the control module can send out an alarm signal to achieve the warning effect.
To sum up, the utility model discloses a filtering module, main power module, control module, sampling module, alarm module and auxiliary power module's cooperation has realized the monitoring and the early warning of surge current-voltage in the circuit, has realized the monitoring of filtering module loss, has ensured power module and consumer's safety, avoids the consumer to damage.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.
Claims (4)
1. A power module with a surge detection function is characterized by comprising a control module, a filtering module, a main power supply module and a sampling module, wherein the filtering module is connected with the main power supply module; wherein the content of the first and second substances,
the sampling module comprises a current detection amplifier, a capacitor C2, a resistor R3, a resistor R4 and a resistor R5;
the output end of the main power supply module is sequentially connected with a resistor R2, a resistor R3 and a resistor R4;
an RS + pin of the current detection amplifier is connected with the input end of the resistor R2, and an RS-pin of the current detection amplifier is connected with the output end of the resistor R2;
the OUT pin of the current detection amplifier is respectively connected with the resistor R5, the capacitor C2 and the input end of the control module;
and the output end of the resistor R4 is connected with the input end of the control module.
2. The power supply module with surge detection function according to claim 1, wherein the filter module comprises a gas discharge tube GDT, a voltage dependent resistor R1 and an inductor L1;
gas discharge tube GDT, piezo-resistor R1 and inductance L1 connect gradually, inductance L1's output with main power module's IN pin is connected.
3. The power supply module with surge detection function according to claim 2, further comprising an alarm module;
the alarm module comprises a resistor R6 and an LED lamp;
the input end of the control module is sequentially connected with the resistor R6 and the LED lamp.
4. A power supply module with a surge detection function according to claim 3, characterized by further comprising an auxiliary power supply module;
and the auxiliary power supply module is respectively connected with the control module, the current detection amplifier and a VCC pin of the main power supply unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222268112.8U CN218217098U (en) | 2022-08-26 | 2022-08-26 | Power module with surge detection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222268112.8U CN218217098U (en) | 2022-08-26 | 2022-08-26 | Power module with surge detection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218217098U true CN218217098U (en) | 2023-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222268112.8U Active CN218217098U (en) | 2022-08-26 | 2022-08-26 | Power module with surge detection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218217098U (en) |
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2022
- 2022-08-26 CN CN202222268112.8U patent/CN218217098U/en active Active
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