CN211086432U - Overload warning circuit - Google Patents
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- CN211086432U CN211086432U CN201921410016.4U CN201921410016U CN211086432U CN 211086432 U CN211086432 U CN 211086432U CN 201921410016 U CN201921410016 U CN 201921410016U CN 211086432 U CN211086432 U CN 211086432U
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Abstract
The utility model is suitable for the technical field of electronic circuits, and provides an overload warning circuit, which comprises an overload switch module, a detection control module and a warning module; the overload switch module is respectively connected with the alternating current and the load end and is used for carrying out corresponding switch protection when the load end is overloaded; the detection control module is respectively connected with the alternating current, the overload switch module and the warning module and is used for controlling the warning module to warn when detecting that the overload switch module carries out switch protection; the warning module is respectively connected with the alternating current and the detection control module and is used for correspondingly warning according to the control of the detection control module. The utility model discloses in, when taking place to transship and make overload switch module disconnection, detection control module control warning module warns and realizes reminding the function for the user can discover the overload problem fast according to warning of warning module, in time makes fault handling, makes reduction potential safety hazard that can furthest, has solved the current problem that is difficult for discovering circuit overload.
Description
Technical Field
The utility model belongs to the technical field of the electronic circuit, especially, relate to an overload warning circuit.
Background
Overload means that the operating current of the electric equipment exceeds the rated or allowable current of the electric equipment, and the temperature of a line and the electric equipment is easily increased after the overload, so that the insulation of the electric equipment and the line is damaged, and the potential safety hazard exists in the operation of the equipment.
In order to solve the problem of circuit overload, overload protectors are arranged to realize overload protection of electric equipment, wherein the overload protectors are devices which can automatically break a circuit within a specified time when current reaches a protector tripping value.
However, the existing overload protector does not indicate after the circuit is abnormally disconnected, so that a user cannot intuitively know whether the circuit is recovered to be normal or has a problem, the user does not have an intuitive distinguishing effect, the user cannot timely perform corresponding fault treatment when the circuit is overloaded, and the risk of power consumption of the user is increased.
SUMMERY OF THE UTILITY MODEL
An object of the embodiment of the utility model is to provide an overload warning circuit aims at solving the current problem that is difficult for perceiving the circuit overload.
The embodiment of the utility model provides a realize like this, an overload warning circuit, include: the overload protection device comprises an overload switch module, a detection control module and a warning module;
the overload switch module is respectively connected with the alternating current and the load end and is used for carrying out corresponding switch protection when the load end is overloaded;
the detection control module is respectively connected with the alternating current, the overload switch module and the warning module and is used for controlling the warning module to warn when detecting that the overload switch module carries out switch protection;
the warning module is respectively connected with the alternating current and the detection control module and is used for correspondingly warning according to the control of the detection control module.
Further, the detection control module includes:
the detection unit is connected with two ends of the overload switch module and is used for detecting the switching state of the overload switch module;
the control unit is respectively connected with the alternating current, the detection unit and the warning module and is used for correspondingly controlling the working state of the warning module according to the switch state of the overload switch module detected by the detection unit; and
and the voltage dividing unit is respectively connected with the alternating current and the detection unit and is used for dividing voltage.
Furthermore, the detection unit is a first resistor, the control unit comprises a first triode, a second resistor and a third resistor which are connected with the first triode, the voltage division unit is a fourth resistor, two ends of the first resistor are respectively connected with two ends of the overload switch module, an emitting electrode of the first triode is connected with a first end of alternating current, the first end of the alternating current is one end of the alternating current which is connected with the overload switch module and the detection unit, a base electrode of the first triode is connected with one end of the second resistor, a collector electrode of the first triode is connected with one end of the third resistor, the other end of the second resistor is connected with one end of the first resistor which is far away from the alternating current, the other end of the third resistor is connected with the warning module, and one end of the fourth resistor is connected with the other end of the second resistor, the other end of the fourth resistor is connected with the second end of the alternating current.
Still further, the circuit further comprises:
and the display module is connected with the load end and used for displaying the state of the load end.
Furthermore, the circuit further comprises a power switch module, one end of the power switch module is electrically connected with the alternating current, the other end of the power switch module is connected with the overload switch module and the detection control module, and the power switch module is used for controlling the overload warning circuit and the working state of the rear-connected load.
Furthermore, the warning module is a first light emitting diode, the anode of the first light emitting diode is connected with the detection control module, and the cathode of the first light emitting diode is electrically connected with the alternating current.
Furthermore, the warning module is a buzzer, the positive electrode of the buzzer is connected with the detection control module, and the negative electrode of the buzzer is electrically connected with the alternating current.
Furthermore, the warning module is a flashing lamp, the anode of the flashing lamp is connected with the detection control module, and the cathode of the flashing lamp is electrically connected with the alternating current.
Furthermore, the display module comprises a fifth resistor and a second light emitting diode, the fifth resistor and the second light emitting diode are connected between load ends, one end of the fifth resistor is connected with the overload switch module, the other end of the fifth resistor is connected with the anode of the second light emitting diode, and the cathode of the second light emitting diode is electrically connected with alternating current.
The embodiment of the utility model provides an overload warning circuit, can break off when the overload takes place to overload through the overload switch module that sets up and realize overload protection with being connected of load, the state of detection control module real-time detection overload switch module through setting up, and when the overload takes place to make overload switch module break off when the load, control warning module warns and realizes reminding the function, so that the user can be according to the quick discovery overload problem of warning module, and in time make corresponding fault handling, make not only can overload protection, still can indicate overload through warning module, make can furthest's reduction potential safety hazard, make to have solved current difficult circuit overload's of discovering problem.
Drawings
Fig. 1 is a schematic block diagram of an overload warning circuit according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of an overload warning circuit according to another embodiment of the present invention;
fig. 3 is a circuit diagram of an overload warning circuit according to another embodiment of the present invention;
fig. 4 is a circuit diagram of an overload warning circuit according to another embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The utility model discloses set up overload switch module, detection control module and warning module, wherein overload switch module can break off when the load takes place to transship and realize overload protection with being connected of load, the state of overload switch module is transshipped the detection control module real-time detection through the setting, and when the load takes place to transship and makes overload switch module break off, control warning module warns and realizes reminding the function, so that the user can be according to the quick discovery overload problem of warning module, and in time make corresponding fault handling, make not only can overload protection, still can remind overload through warning module, make can furthest's reduction potential safety hazard, make to have solved current difficult problem of perceiving circuit overload.
Example one
Please refer to fig. 1, which is a schematic block diagram of an overload warning circuit according to a first embodiment of the present invention, the overload warning circuit includes: the overload switch module 20, the detection control module 30 and the warning module 40;
the overload switch module 20 is respectively connected with the alternating current and the load end and is used for carrying out corresponding switch protection when the load end is overloaded;
the detection control module 30 is respectively connected with the alternating current, the overload switch module 20 and the warning module 40, and is used for controlling the warning module 40 to warn when detecting that the overload switch module 20 performs switch protection;
the warning module 40 is connected to the ac power and detection control module 30, and is configured to perform warning according to the control of the detection control module 30.
Wherein, in an embodiment of the present invention, the overload switch module 20 is respectively connected to a first end AC1 of the alternating current and one end of a load end, wherein the other end of the load end is connected to a second end AC2 of the alternating current, and the load end is used for connecting a load, so that the load can be connected to the alternating current for normal operation. It should be noted that, in this embodiment, the load end is connected to an overload protector, wherein when the load current reaches a trip value protected by the overload protector, the overload protector automatically opens the circuit within a specified time, so that the overload switch module 20 is in a disconnected state, and therefore, the ac cannot be connected to the load end, thereby implementing overload protection on the load. Therefore, in normal operation, the overload switch module 20 is in a conducting state, so that a loop between the alternating current and the load end is conducted; when the load is in an overload state, so that the load current is greater than the trip value, the overload protector controls the trip unit to trip to realize an open circuit, so as to drive the overload switch module 20 to be in an open state. In an embodiment of the present invention, the overload switch module 20 may be an overload protection switch.
The utility model discloses an embodiment, this detection control module 30 is connected with the first end AC1 of alternating current, overload switch module 20, and warning module 40 respectively, it is used for detecting the on off state that overloads switch module 20, and when detecting that overload switch module 20 is in the off-state and carries out overload protection, control warning module 40 carries out corresponding warning, make the user can distinguish the overload state of load according to the corresponding perception of warning module 40, with the corresponding fault handling of quick making.
In an embodiment of the present invention, the warning module 40 is respectively connected to the second end AC2 of the alternating current and the detection control module 30, and the warning module 40 is used for correspondingly warning when receiving the control signal sent by the detection control module 30.
Wherein, it is specific, in this embodiment, this alternating current's first end AC1 is the live wire end, and alternating current's second end AC2 is the zero line end, can understand that in the utility model discloses an in other embodiments, this alternating current's first end AC1 still can be the zero line end, and alternating current's second end AC2 still can be the live wire end, and it sets up according to user's in-service use needs, does not limit here.
When the overload switch module 20 is in a conducting state during normal operation, the detection control module 30 does not control the operation of the warning module 40 according to the detected conducting state of the overload switch module 20, and the load performs normal operation; when the load is overloaded, the overload switch module 20 is in the off state to drive the load to stop working, and the detection control module 30 controls the operation of the warning module 40 according to the detected off state of the overload switch module 20, so that the warning function can be realized, and a user can distinguish the overload state of the load according to the corresponding detection of the warning module 40, so as to rapidly perform corresponding fault processing.
In this embodiment, can break off when the load takes place to transship through the overload switch module that sets up and be connected with the load and realize overload protection, detection control module through the setting detects the state of overload switch module in real time, and when the overload takes place to make overload switch module break off, control warning module warns and realizes reminding the function, so that the user can be according to the quick discovery overload problem of warning module, and in time make corresponding fault handling, make not only can overload protection, still can indicate overload through warning module, make can furthest't reduce the potential safety hazard, make to have solved current difficult problem of perceiving circuit overload.
Example two
Please refer to fig. 2, which is a schematic block diagram of an overload warning circuit according to a second embodiment of the present invention, the second embodiment has a structure substantially the same as that of the first embodiment, and the difference is that in this embodiment, the detection control module 30 includes:
a detection unit 31 connected to both ends of the overload switch module 20 for detecting a switching state of the overload switch module 20;
the control unit 32 is respectively connected with the alternating current, the detection unit 31 and the warning module 40 and is used for controlling the working state of the warning module 40 correspondingly according to the switching state of the overload switch module 20 detected by the detection unit 31; and
and a voltage dividing unit 33 connected to the ac and detecting unit 31, respectively, for dividing voltage.
In specific implementation, referring to fig. 3, in an embodiment of the present invention, the overload switch module 20 is an overload protection switch S1, the detection unit 31 is a first resistor R1, the control unit 32 includes a first transistor Q1, a second resistor R2 and a third resistor R3 connected to the first transistor Q1, the voltage dividing unit 33 is a fourth resistor R4, two ends of the first resistor R1 are respectively connected to two ends of the overload switch module 20, an emitter e of the first transistor Q1 is connected to a first end AC1 of alternating current, wherein the first end AC1 of alternating current is one end of alternating current connected to the overload switch module 20 and the detection unit 31, a base b of the first transistor Q1 is connected to one end of the second resistor R2, a collector c of the first transistor Q1 is connected to one end of the third resistor R3, the other end of the second resistor R2 is connected to one end of the first resistor R1, and the other end of the third resistor R3 is connected to the warning module 40, one end of the fourth resistor R4 is connected with the other end of the second resistor R2, and the other end of the fourth resistor R4 is connected with the second end AC2 of the alternating current.
Further, in an embodiment of the present invention, the warning module 40 is a first light emitting diode L ED1, an anode of the first light emitting diode L ED1 is connected to the detection control module 30, and a cathode of the first light emitting diode L ED1 is electrically connected to the ac.
The first end AC1 of the alternating current is respectively connected with one end of the overload switch module 20, one end of a first resistor R1 and an emitter e of a first triode Q1, the other end of the overload switch module 20 is respectively connected with one end of a load end, the other end of the first resistor R1, one end of a second resistor R2, which is far away from a base b of the first triode Q1, and one end of a fourth resistor R4, the second end AC2 of the alternating current is respectively connected with a negative electrode of a first light emitting diode L ED1, the other end of the fourth resistor R4 and the other end of the load end, a collector c of the first triode Q1 is connected with one end of a third resistor R3, and the other end of the third resistor R3 is connected with a positive electrode of a first light emitting diode L ED 1.
Wherein, it is specific, in this embodiment, this alternating current's first end AC1 is the live wire end, and alternating current's second end AC2 is the zero line end, can understand that in the utility model discloses an in other embodiments, this alternating current's first end AC1 still can be the zero line end, and alternating current's second end AC2 still can be the live wire end, and it sets up according to user's in-service use needs, does not limit here.
Meanwhile, because the overload switch module 20 is in the on state, the current in the alternating current does not pass through the detection unit 31, the voltage of the emitter e of the first triode Q1 is the same as the voltage of the base b, so that the first triode Q1 is in the off state, no current passes through the first light emitting diode L ED1, the first light emitting diode L ED1 does not emit light, and a user can correspondingly determine whether the load is overloaded according to the operating state of the first light emitting diode L ED 1.
When the load is overloaded, the overload switch module 20 is in an off state to drive the load to stop working, at this time, the current in the alternating current passes through the detection unit 31, and therefore, when the current passes through the detection unit 31, the voltage drop exists between the emitter e and the base b of the first triode Q1, so that a voltage drop for conducting the first triode Q1 exists, so that the first triode Q1 is driven to be conducted, at this time, the current flowing out from the live wire end of the alternating current flows to the third resistor R3 after flowing through the first triode Q1, and flows to the zero line end of the alternating current after flowing through the first light emitting diode L ED1, so that the first light emitting diode L ED 7 emits light, at this time, the user can correspondingly determine whether the load is overloaded according to the working state of the first light emitting diode L ED1, and remove and adjust the load after the overload, so as to reduce the risk of electricity consumption for the user.
It should be noted that, in other embodiments of the present invention, the warning module 40 may also be a buzzer, the positive electrode of the buzzer is connected to the detection control module 30, the negative electrode of the buzzer is connected to the ac, and at this time, when the load is overloaded, the first triode Q1 is turned on, so that the buzzer works to generate a buzzer to prompt the user that the load is in an overload state, and the relevant electrical devices should be connected in turn; when the user removes the power consumption device and presses the overload switch module 20 again to close, the buzzer stops buzzing, so that the overload warning circuit is recovered to be normally used.
It should be noted that, in other embodiments of the present invention, the warning module 40 may also be a flashing light, the positive electrode of the flashing light is connected to the detection control module 30, and the negative electrode of the flashing light is connected to the ac power, at this time, when the load is overloaded, the first triode Q1 is turned on, so that the flashing light starts to flash when working, so as to prompt the user that the load is in an overload state, and the related electric devices should be used in sequence; when the user removes the electric equipment and presses and closes the overload switch module 20 again, the flashing lamp stops flashing, so that the overload warning circuit is recovered to be normally used.
It should be noted that, in other embodiments of the present invention, the warning module 40 may also be any one or combination of the first light emitting diode, the buzzer and the flashing light, so as to implement a plurality of ways to prompt the user of overload.
It should be noted that, in other embodiments of the present invention, the overload warning circuit may be integrated with the overload protector on the same circuit or the same circuit board, so that the overload protection and the overload warning can be realized in an integrated manner.
In this embodiment, make the on-off state that can detect overload switch module through setting up the detecting element, the control unit who makes through the setting makes can detect taking place the overload at the detecting element and overload switch module disconnection time corresponding control warning module's warning, so that the user can be according to the quick discovery overload problem of warning module, and in time make corresponding fault handling, make not only can overload protection, still can indicate overload through warning module, make can furthest's reduction potential safety hazard, make to have solved current difficult problem of perceiving circuit overload.
EXAMPLE III
Please refer to fig. 4, which is a schematic circuit diagram of an overload warning circuit according to a third embodiment of the present invention, the third embodiment has a structure substantially the same as that of the second embodiment, and the difference therebetween is that in this embodiment, the overload warning circuit further includes:
a display module 50 connected to the load terminal for displaying the state of the load terminal;
further, in an embodiment of the present invention, the overload warning circuit further includes a power switch module 60, one end of the power switch module 60 is electrically connected to the ac, the other end of the power switch module 60 is connected to the overload switch module 20 and the detection control module 30, and the power switch module 60 is used for controlling the overload warning circuit and the working state of the rear connection load. In one embodiment, the power switch module 60 may be a power switch K1.
Further, in an embodiment of the present invention, the display module 50 includes a fifth resistor R5 and a second light emitting diode L ED2 connected between the load terminals, one end of the fifth resistor R5 is connected to the overload switch module 20, the other end of the fifth resistor R5 is connected to the anode of the second light emitting diode L ED2, the cathode of the second light emitting diode L ED2 is connected to the ac power, specifically, one end of the fifth resistor R5 is connected to the end of the overload switch module 20 away from the ac power, and the cathode of the second light emitting diode L ED2 is connected to the second end of the ac power.
During normal operation, when a user closes the power switch module 60, the overload switch module 20 is in a conducting state, and ac current flows to a load end to supply power to a load connected to the load end, meanwhile, because the overload switch module 20 is in the conducting state, current in the ac current does not pass through the detection unit 31, voltage of an emitter e of the first triode Q1 is the same as voltage of a base b, so that the first triode Q1 is in a disconnecting state, no current passes through the first light emitting diode L ED1 at this time, the first light emitting diode L ED1 does not emit light, and simultaneously, current in the ac current passes through the display module 50 after passing through the load switch module 20, that is, current flowing from a live-current end of the ac current flows into a zero line end of the ac current after passing through the fifth resistor R5 and the second light emitting diode L ED2, so that the second light emitting diode L ED2 emits light, so that the user can determine whether the load end is in a normal operation state according to the display state of the display module 50, wherein the fifth resistor R5 is a current limiting resistor.
When the overload switch module 20 is in an off state to drive the load to stop working, at this time, the current in the ac power passes through the detection unit 31, and therefore, when the current passes through the detection unit 31, the voltage drop occurs at this time, so that a voltage drop for conducting the first triode Q1 exists between the emitter e and the base b of the first triode Q1, so that the first triode Q1 is driven to be conducted, and the current flowing out from the live end of the ac power flows through the first triode Q1 and then flows to the third resistor R3 and the zero line end of the ac power after the first light emitting diode L ED1, so that the first light emitting diode L ED1 emits light, at this time, the user can correspondingly determine whether the load is overloaded according to the working state of the first light emitting diode L ED1, and can open the power switch module 60 after the overload occurs, so that the entire overload circuit is in the off working state, at this time, the load can be removed and adjusted, thereby reducing the risk of the user that the overload switch module 20 can be closed again, and the overload circuit can be used normally.
In the embodiment, the power switch module is arranged to control the load to be connected with the circuit of the alternating current, so that when a user finds that the overload occurs, the potential safety hazard can be reduced to the maximum extent by turning off the power switch module, the display module can provide the display of the working state of the load for the user, the detection unit can detect the on-off state of the overload switch module, the control unit can correspondingly control the warning of the warning module when the detection unit detects that the overload switch module is disconnected, so that the user can quickly find the overload problem according to the warning of the warning module and timely make corresponding fault treatment, the overload protection device has the advantages that overload protection can be achieved, overload can be prompted through the warning module, potential safety hazards can be reduced to the maximum extent, and the problem that the existing overload of the circuit cannot be easily perceived is solved.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. An overload warning circuit, the circuit comprising: the overload protection device comprises an overload switch module, a detection control module and a warning module;
the overload switch module is respectively connected with the alternating current and the load end and is used for carrying out corresponding switch protection when the load end is overloaded;
the detection control module is respectively connected with the alternating current, the overload switch module and the warning module and is used for controlling the warning module to warn when detecting that the overload switch module carries out switch protection;
the warning module is respectively connected with the alternating current and the detection control module and is used for correspondingly warning according to the control of the detection control module.
2. The overload warning circuit of claim 1, wherein the detection control module comprises:
the detection unit is connected with two ends of the overload switch module and is used for detecting the switching state of the overload switch module;
the control unit is respectively connected with the alternating current, the detection unit and the warning module and is used for correspondingly controlling the working state of the warning module according to the switch state of the overload switch module detected by the detection unit; and
and the voltage dividing unit is respectively connected with the alternating current and the detection unit and is used for dividing voltage.
3. The overload warning circuit according to claim 2, wherein the detecting unit is a first resistor, the control unit includes a first transistor, a second resistor and a third resistor connected to the first transistor, the voltage dividing unit is a fourth resistor, two ends of the first resistor are respectively connected to two ends of the overload switch module, an emitter of the first transistor is connected to a first end of the alternating current, the first end of the alternating current is an end of the alternating current connected to the overload switch module and the detecting unit, a base of the first transistor is connected to one end of the second resistor, a collector of the first transistor is connected to one end of the third resistor, the other end of the second resistor is connected to one end of the first resistor far from the alternating current, the other end of the third resistor is connected to the warning module, and one end of the fourth resistor is connected to the other end of the second resistor, the other end of the fourth resistor is connected with the second end of the alternating current.
4. The overload warning circuit of claim 1, wherein the circuit further comprises:
and the display module is connected with the load end and used for displaying the state of the load end.
5. The overload warning circuit according to claim 1, further comprising a power switch module, wherein one end of the power switch module is electrically connected to the ac power, the other end of the power switch module is connected to the overload switch module and the detection control module, and the power switch module is configured to control the operating states of the overload warning circuit and the subsequent load.
6. The overload warning circuit according to claim 1, wherein the warning module is a first light emitting diode, an anode of the first light emitting diode is connected to the detection control module, and a cathode of the first light emitting diode is electrically connected to an alternating current.
7. The overload warning circuit according to claim 1, wherein the warning module is a buzzer, a positive electrode of the buzzer is connected to the detection control module, and a negative electrode of the buzzer is electrically connected to the alternating current.
8. The overload warning circuit according to claim 1, wherein the warning module is a flashing light, a positive pole of the flashing light is connected with the detection control module, and a negative pole of the flashing light is electrically connected with an alternating current.
9. The overload warning circuit according to claim 4, wherein the display module comprises a fifth resistor and a second light emitting diode connected between load terminals, one end of the fifth resistor is connected to the overload switch module, the other end of the fifth resistor is connected to an anode of the second light emitting diode, and a cathode of the second light emitting diode is electrically connected to an alternating current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410016.4U CN211086432U (en) | 2019-08-28 | 2019-08-28 | Overload warning circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921410016.4U CN211086432U (en) | 2019-08-28 | 2019-08-28 | Overload warning circuit |
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| Publication Number | Publication Date |
|---|---|
| CN211086432U true CN211086432U (en) | 2020-07-24 |
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| CN201921410016.4U Active CN211086432U (en) | 2019-08-28 | 2019-08-28 | Overload warning circuit |
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| CN (1) | CN211086432U (en) |
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