CN212989475U - Power failure detection circuit and power consumption equipment - Google Patents
Power failure detection circuit and power consumption equipment Download PDFInfo
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- CN212989475U CN212989475U CN202022051136.9U CN202022051136U CN212989475U CN 212989475 U CN212989475 U CN 212989475U CN 202022051136 U CN202022051136 U CN 202022051136U CN 212989475 U CN212989475 U CN 212989475U
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Abstract
The utility model provides a fall electric detection circuitry and consumer, fall electric detection circuitry includes fall electric detection module and processor module, fall electric detection module's sense terminal and connect power supply, fall electric detection module's output and connect the input of processor module, wherein: the power failure detection module is used for detecting the voltage of a power supply, detecting the working state of the power supply according to the voltage, and sending a power failure signal to the processor module when detecting that the working state of the power supply is a power failure state; the processor module is used for carrying out power-down protection measures when receiving the power-down signals sent by the power-down detection module. By detecting the power supply condition of the power supply, when the power failure condition is detected, the power failure protection measures are timely carried out, and the problems of data loss, noise or incapability of working of certain modules and the like are avoided.
Description
Technical Field
The utility model relates to a fall the electric field of handling, especially relate to a fall electric detection circuitry and consumer.
Background
In the existing direct current power supply system, if the power supply source is powered down, the power supply of the power utilization device is insufficient or directly powered off, so that the problems of data loss, noise, incapability of working of certain modules and the like occur.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a fall electric detection circuitry and consumer, aims at solving prior art power supply and falls the problem that leads to the power consumption device to break down.
In order to achieve the above object, the utility model provides a power down detection circuit, power down detection circuit is including power down detection module and processor module, power supply is connected to power down detection module's sense terminal, power down detection module's output is connected the input of processor module, wherein:
the power failure detection module is used for detecting the voltage of a power supply, detecting the working state of the power supply according to the voltage, and sending a power failure signal to the processor module when detecting that the working state of the power supply is a power failure state;
the processor module is used for carrying out power-down protection measures when receiving the power-down signals sent by the power-down detection module.
Optionally, the power failure detection module comprises a voltage dividing unit, an energy storage unit, a control unit and a signal sending unit, wherein the input end of the voltage dividing unit is connected with a power supply, the output end of the voltage dividing unit is connected with the input end of the energy storage unit, the output end of the energy storage unit is connected with the input end of the control unit, the control end of the control unit is connected with the power supply, the output end of the control unit is connected with the control end of the signal sending unit, and the output end of the signal sending unit is connected with the input end of the processor module.
Optionally, the voltage dividing unit includes a first resistor and a second resistor,
the first end of the first resistor is connected with a power supply, the second end of the first resistor is connected with the input end of the energy storage unit, and the second end of the first resistor is grounded through the second resistor.
Optionally, the energy storage unit comprises a diode and a capacitor,
the anode of the diode is connected with the output end of the voltage division unit, the cathode of the diode is connected with the input end of the control unit, and the cathode of the diode is grounded through the capacitor.
Optionally, the control unit comprises a first switch tube and a third resistor,
the control end of the first switch tube is connected with a power supply through the third resistor, the input end of the first switch tube is connected with the output end of the energy storage unit, and the output end of the first switch tube is connected with the control end of the signal sending unit.
Optionally, the first switch tube is a PNP type triode.
Optionally, the signal transmitting unit includes a second switch tube, a fourth resistor and a fifth resistor,
the control end of the second switch tube is connected with the output end of the control unit through the fourth resistor, the control end of the second switch tube is grounded through the fifth resistor, the output end of the second switch tube is grounded, and the input end of the second switch tube is connected with the input end of the processor module.
Optionally, the second switching tube is an NPN-type triode.
Optionally, the signal transmitting unit further comprises a sixth resistor,
and the input end of the second switching tube is also connected with a pull-up power supply through the sixth resistor.
Furthermore, for realizing the above object, the utility model also provides an electric equipment, electric equipment includes the power, falls electric detection device and electric installation, fall electric detection device including as above fall electric detection circuit.
The utility model provides a fall electric detection circuitry and consumer, fall electric detection circuitry is including falling electric detection module and processor module, the power supply is connected to the sense terminal that falls electric detection module, the output that falls electric detection module is connected the input of processor module, wherein: the power failure detection module is used for detecting the voltage of a power supply, detecting the working state of the power supply according to the voltage, and sending a power failure signal to the processor module when detecting that the working state of the power supply is a power failure state; the processor module is used for carrying out power-down protection measures when receiving the power-down signals sent by the power-down detection module. By detecting the power supply condition of the power supply, when the power failure condition is detected, the power failure protection measures are timely carried out, and the problems of data loss, noise or incapability of working of certain modules and the like are avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a functional block diagram of an embodiment of the power down detection circuit of the present invention;
fig. 2 is a circuit structure diagram of the power down detection circuit of the present invention applied in the embodiment of fig. 1;
fig. 3 is a circuit structure diagram of the power down detection circuit of the present invention applied in another embodiment of fig. 1.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Power failure detection module | R1～R7 | First to |
| 200 | Processor module | C1 | Capacitor with a |
| 101 | Voltage dividing unit | D1 | Diode with a high- |
| 102 | Energy storage unit | Q1 | |
| 103 | Control unit | Q2 | |
| 104 | Signal transmitting unit | U1 | |
| 105 | Optical coupling unit |
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used to explain the relative position relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a fall electric detection circuitry is applied to in the consumer, and this consumer can be washing machine, microwave oven and TV set etc. please see figure 1, and figure 1 is the utility model discloses fall electric detection circuitry's an embodiment's functional module diagram. In this embodiment, the power down detection circuit includes a power down detection module 100 and a processor module 200, a detection end of the power down detection module 100 is connected to a power supply, an output end of the power down detection module 100 is connected to an input end of the processor module 200, wherein:
the power failure detection module 100 is configured to detect a voltage of a power supply, detect a working state of the power supply according to the voltage, and send a power failure signal to the processor module 200 when detecting that the working state of the power supply is a power failure state;
the processor module 200 is configured to perform a power-down protection measure when receiving a power-down signal sent by the power-down detection module 100.
The power failure protection measures comprise data storage and the operation of restarting the related modules when the low voltage is recovered to the high voltage or the power supply is recovered from the power failure state, so that the related modules work normally.
The following description is made in principle with reference to fig. 2:
a first switching tube Q1 is a PNP type triode; the power supply of the second switching tube Q2 for the NPN type triode is 12V; the resistance of the first resistor R1 is 2.2K; the second resistor R2 with a resistance of 33K is illustrated as an example;
the normal operating voltage is stabilized at 12V, and after the voltage is divided by the first resistor R1 and the second resistor R2, the capacitor C1 is charged through the diode D1, and the charging voltage between 11.25 and 0.3V across the capacitor C1 is 10.95V. The base of the first switch tube Q1 is connected to the power supply through the third resistor R3, the base voltage 12V of the first switch tube Q1 is greater than the emitter voltage 10.95V, the first switch tube Q1 works in the cut-off state, therefore, the second switch tube Q2 also processes the cut-off state, and the collector of the second switch tube Q2 outputs a high level to the processor module 200.
When the power supply is powered down, the voltage across the capacitor C1 is cut off reversely by the diode D1 and does not discharge to the power supply direction, and before the voltage of the power supply drops to 10.95V, the first switch tube Q1 is kept in an off state, the voltage of the capacitor C1 is kept at about 10.95V basically, when the voltage of the power supply drops to 10.95V-0.65V-10.3V, the voltage of the transmitter and the base of the first switch tube Q1 is biased positively, the first switch tube Q1 is turned on, the voltage of 10.95V makes the second switch tube Q2 enter an on state through the fourth resistor R4, and the collector of the second switch tube Q2 outputs a low level to the processor module 200.
When the processor module 200 receives a low level signal, which represents that the power supply is in a power-down state, a power-down protection operation is performed.
The embodiment detects the power supply condition of the power supply source, so that when the power failure condition is detected, power failure protection measures are timely carried out, and the problems that data is lost, noise or certain modules cannot work and the like are avoided.
Further, as an embodiment, referring to fig. 2, the power failure detection module 100 includes a voltage dividing unit 101, an energy storage unit 102, a control unit 103, and a signal sending unit 104, an input end of the voltage dividing unit 101 is connected to a power supply, an output end of the voltage dividing unit 101 is connected to an input end of the energy storage unit 102, an output end of the energy storage unit 102 is connected to an input end of the control unit 103, a control end of the control unit 103 is connected to the power supply, an output end of the control unit 103 is connected to a control end of the signal sending unit 104, and an output end of the signal sending unit 104 is connected to an input end of the processor module 200.
The power failure detection module 100 may also have other circuit structures, in another embodiment, the power failure detection module 100 may further include a voltage dividing unit 101, an energy storage unit 102, a control unit 103, and an optical coupling unit 105, where the optical coupling unit 105 includes an optical coupler U1 and a seventh resistor R7, see fig. 3:
the first control end of the photoelectric coupler U1 is connected to the output end of the control unit 103, the first control end of the photoelectric coupler U1 is further grounded through the seventh resistor R7, the second control end of the photoelectric coupler U1 is grounded, the first output end of the photoelectric coupler U1 is grounded, and the second output end of the photoelectric coupler U1 is connected to the input end of the processor module 200. As can be seen from the above description, those skilled in the art may also design other circuit structures to implement the power down detection function, for example, an operational comparator or a voltage detection chip is used.
Further, the voltage dividing unit 101 includes a first resistor R1 and a second resistor R2,
the first end of the first resistor R1 is connected to a power supply, the second end of the first resistor R1 is connected to the input end of the energy storage unit 102, and the second end of the first resistor R1 is also connected to ground through the second resistor R2.
Further, the energy storage unit 102 includes a diode D1 and a capacitor C1,
the anode of the diode D1 is connected to the output terminal of the voltage dividing unit 101, the cathode of the diode D1 is connected to the input terminal of the control unit 103, and the cathode of the diode D1 is also connected to ground through the capacitor C1.
Further, the control unit 103 includes a first switch tube Q1 and a third resistor R3,
the control end of the first switch tube Q1 is connected to a power supply through the third resistor R3, the input end of the first switch tube Q1 is connected to the output end of the energy storage unit 102, and the output end of the first switch tube Q1 is connected to the control end of the signal transmission unit 104.
Further, the first switch tube Q1 is a PNP type triode.
Further, the signal transmitting unit 104 includes a second switch tube Q2, a fourth resistor R4 and a fifth resistor R5,
the control end of the second switch tube Q2 is connected to the output end of the control unit 103 through the fourth resistor R4, the control end of the second switch tube Q2 is further grounded through the fifth resistor R5, the output end of the second switch tube Q2 is grounded, and the input end of the second switch tube Q2 is connected to the input end of the processor module 200.
Further, the second switching tube Q2 is an NPN-type transistor.
The input end of the second switching tube Q2, i.e. the collector of the NPN transistor, is an OC gate, and the voltage level of the output is determined by the pull-up level.
Further, the signal transmitting unit 104 further includes a sixth resistor R6 (not shown),
the input end of the second switch tube Q2 is also connected with a pull-up power supply through the sixth resistor R6.
The sixth resistor R6 is a pull-up resistor for clamping the output terminal of the signal transmitting unit 104 at a high level when the second switch Q2 is not conductive.
The utility model discloses still protect an electric equipment, this electric equipment include the power, fall electric detection device and electric installation, fall electric detection device and include as above fall electric detection circuit, should fall electric detection circuit's structure can refer to above-mentioned embodiment, no longer gives unnecessary details here. It should be noted that, because the protection device of this embodiment adopts the technical solution of the above power failure detection circuit, the protection device has all the beneficial effects of the above power failure detection circuit.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. The term "comprising", without further limitation, means that the element so defined is not excluded from the group of processes, methods, articles, or systems that include the element. The above embodiment numbers of the present invention are only for description, and do not represent the advantages and disadvantages of the embodiments.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (10)
1. The utility model provides a power failure detection circuit, its characterized in that, the circuit is including power failure detection module and processor module, power supply is connected to the sense terminal of power failure detection module, the output of power failure detection module is connected the input of processor module, wherein:
the power failure detection module is used for detecting the voltage of a power supply, detecting the working state of the power supply according to the voltage, and sending a power failure signal to the processor module when detecting that the working state of the power supply is a power failure state;
the processor module is used for carrying out power-down protection measures when receiving the power-down signals sent by the power-down detection module.
2. The power-down detection circuit according to claim 1, wherein the power-down detection module comprises a voltage dividing unit, an energy storage unit, a control unit and a signal sending unit, an input end of the voltage dividing unit is connected to a power supply, an output end of the voltage dividing unit is connected to an input end of the energy storage unit, an output end of the energy storage unit is connected to an input end of the control unit, a control end of the control unit is connected to the power supply, an output end of the control unit is connected to a control end of the signal sending unit, and an output end of the signal sending unit is connected to an input end of the processor module.
3. The power down detection circuit of claim 2, wherein the voltage dividing unit includes a first resistor and a second resistor,
the first end of the first resistor is connected with a power supply, the second end of the first resistor is connected with the input end of the energy storage unit, and the second end of the first resistor is grounded through the second resistor.
4. The power down detection circuit of claim 2, wherein the energy storage unit comprises a diode and a capacitor,
the anode of the diode is connected with the output end of the voltage division unit, the cathode of the diode is connected with the input end of the control unit, and the cathode of the diode is grounded through the capacitor.
5. The power down detection circuit of claim 2, wherein the control unit comprises a first switch tube and a third resistor,
the control end of the first switch tube is connected with a power supply through the third resistor, the input end of the first switch tube is connected with the output end of the energy storage unit, and the output end of the first switch tube is connected with the control end of the signal sending unit.
6. The power down detection circuit of claim 5, wherein the first switching transistor is a PNP type transistor.
7. The power down detection circuit of claim 5, wherein the signal transmitting unit comprises a second switch tube, a fourth resistor and a fifth resistor,
the control end of the second switch tube is connected with the output end of the control unit through the fourth resistor, the control end of the second switch tube is grounded through the fifth resistor, the output end of the second switch tube is grounded, and the input end of the second switch tube is connected with the input end of the processor module.
8. The power down detection circuit of claim 7, wherein the second switching transistor is an NPN transistor.
9. The power down detection circuit of claim 7, wherein the signal transmitting unit further comprises a sixth resistor,
and the input end of the second switching tube is also connected with a pull-up power supply through the sixth resistor.
10. An electric device comprising a power supply, a power-down detection device and an electric device, the power-down detection device comprising the power-down detection circuit of any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022051136.9U CN212989475U (en) | 2020-09-17 | 2020-09-17 | Power failure detection circuit and power consumption equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022051136.9U CN212989475U (en) | 2020-09-17 | 2020-09-17 | Power failure detection circuit and power consumption equipment |
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| CN212989475U true CN212989475U (en) | 2021-04-16 |
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| CN202022051136.9U Active CN212989475U (en) | 2020-09-17 | 2020-09-17 | Power failure detection circuit and power consumption equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113395177A (en) * | 2021-06-10 | 2021-09-14 | 浙江亿邦通信科技有限公司 | Power failure protection method for 5G gateway |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113395177A (en) * | 2021-06-10 | 2021-09-14 | 浙江亿邦通信科技有限公司 | Power failure protection method for 5G gateway |
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