CN219497641U - Load power supply control circuit and electronic equipment - Google Patents
Load power supply control circuit and electronic equipment Download PDFInfo
- Publication number
- CN219497641U CN219497641U CN202320123935.3U CN202320123935U CN219497641U CN 219497641 U CN219497641 U CN 219497641U CN 202320123935 U CN202320123935 U CN 202320123935U CN 219497641 U CN219497641 U CN 219497641U
- Authority
- CN
- China
- Prior art keywords
- power supply
- load
- coil
- controller
- branch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Landscapes
- Control Of Electrical Variables (AREA)
Abstract
The application discloses load power supply control circuit and electronic equipment, load power supply control circuit includes switch branch road, detection branch road and controller. The first end of the switch branch is connected with the controller, the second end of the switch branch is connected with the first end of the first power supply, the second end of the first power supply is connected with the first end of the load, the third end of the switch branch is connected with the second end of the load, and the detection branch is connected with the controller. The controller is used for outputting a control signal. The switching leg includes a coil that is configured to conduct in response to a control signal to establish a connection between a first terminal of the first power source and a second terminal of the load, wherein the coil is energized when the switching leg receives the control signal. The detection branch is used for responding to a magnetic field generated when the coil is electrified and outputting a first level signal to the controller so that the controller determines that the switch branch is conducted. By the mode, whether the electromagnetic type electric appliance operates normally or not can be detected, and the reliability is high.
Description
Technical Field
The present disclosure relates to electronic circuits, and particularly to a load power supply control circuit and an electronic device.
Background
Electromagnetic type electric appliances are one of the most typical, most widely used and numerous types of electric appliances in electric control systems. Electromagnetic type piezoelectrics generally have two basic components, namely a sensing part and an executing part. The sensing part receives the signal of the outside person and makes regular reaction through conversion, amplification and judgment, so that the executing part acts and outputs corresponding instructions to realize the control purpose.
Electromagnetic type electric appliances are often used for controlling power supply and power failure of a load to control the load to perform work or stop work. Taking a relay as an example, when a coil in the relay is a sensing portion, each pair of normally open contacts is an executing portion. When the coil is powered on, each pair of normally open contacts is closed so as to enable the load to be powered on, otherwise, the load is powered off.
However, in the current use process of the electromagnetic low-voltage electric appliance, an open-loop control mode is generally adopted, that is, only a control signal is output to control the electromagnetic low-voltage electric appliance, but whether the electromagnetic low-voltage electric appliance is normally operated is not detected, and the reliability is poor.
Disclosure of Invention
The application aims at providing a load power supply control circuit and electronic equipment, and the application can detect whether electromagnetic type piezoelectric device normally acts or not, and the reliability is stronger.
To achieve the above object, in a first aspect, the present application provides a load power supply control circuit, including:
the device comprises a switch branch, a detection branch and a controller;
the first end of the switch branch is connected with the controller, the second end of the switch branch is connected with the first end of the first power supply, the second end of the first power supply is connected with the first end of the load, the third end of the switch branch is connected with the second end of the load, and the detection branch is connected with the controller;
the controller is used for outputting a control signal;
the switching branch comprises a coil, and the switching branch is used for being conducted in response to the control signal so as to establish connection between a first end of the first power supply and a second end of the load, wherein the coil is powered when the switching branch receives the control signal;
the detection branch is used for responding to a magnetic field generated when the coil is powered on and outputting a first level signal to the controller so that the controller can determine that the switch branch is conducted.
In an alternative manner, the switching branch comprises a first switching unit and a second switching unit, wherein the second switching unit comprises the coil;
the first end of the first switch unit is connected with the controller, the second end of the first switch unit is connected with the first end of the second switch unit, the second end of the second switch unit is connected with a second power supply, the third end of the second switch unit is connected with the first end of the first power supply, the fourth end of the second switch unit is connected with the second end of the load, wherein the first end of the coil is the first end of the second switch unit, and the second end of the coil is the second end of the second switch unit;
the first switch unit is used for responding to the control signal to conduct so that the second power supply supplies power to the coil;
the second switch unit is used for being conducted when the coil is electrified so as to establish connection between the first end of the first power supply and the second end of the load.
In an alternative manner, the first switching unit includes a first resistor and a first switching tube;
the first end of the first resistor is connected with the controller, the second end of the first resistor is connected with the first end of the first switching tube, the second end of the first switching tube is grounded, and the third end of the first switching tube is connected with the first end of the second switching unit.
In an alternative mode, the first switching tube is an NPN transistor;
the base electrode of the NPN triode is the first end of the first switching tube, the emitting electrode of the NPN triode is the second end of the first switching tube, and the collector electrode of the NPN triode is the third end of the first switching tube.
In an alternative manner, the second switch unit includes an electromagnetic low-voltage electrical appliance including the coil and a pair of normally open contacts;
the first end of the coil is connected with the second end of the first switch unit, the second end of the coil is connected with the second power supply, a first contact of the pair of normally open contacts is connected with the first end of the first power supply, and a second contact of the pair of normally open contacts is connected with the second end of the load.
In an alternative manner, the electromagnetic low-voltage electric appliance includes at least one of a relay and a contactor.
In an alternative, the detection branch comprises a hall sensor;
the power supply end of the Hall sensor is connected with a third power supply, the grounding end of the Hall sensor is grounded, and the signal output end of the Hall sensor is connected with the controller.
In an alternative manner, the detection branch further includes a second resistor and a first capacitor;
the first end of the second resistor is connected with the power supply end of the Hall sensor, the second end of the second resistor is respectively connected with the signal output end of the Hall sensor and the first end of the first capacitor, and the second end of the first capacitor is grounded.
In a second aspect, the present application provides an electronic device comprising a load supply control circuit as described above.
The beneficial effects of this application are: the load power supply control circuit comprises a switch branch, a detection branch and a controller. The first end of the switch branch is connected with the controller, the second end of the switch branch is connected with the first end of the first power supply, the second end of the first power supply is connected with the first end of the load, the third end of the switch branch is connected with the second end of the load, and the detection branch is connected with the controller. When the switch branch is required to be controlled, the controller outputs a control signal to the switch branch. At this time, the coil in the switching branch is energized, and the switching branch is turned on, the connection between the first power source and the load is established, and the load is energized. Meanwhile, a magnetic field is generated after the coil is electrified, the detection branch can detect the magnetic field, and a first level signal is output to the controller in response to the magnetic field. The controller is capable of determining that the switching leg has been actuated upon receipt of the first level signal. Therefore, when the switch branch circuit comprises the electromagnetic low-voltage electric appliance, the controller can determine whether the electromagnetic low-voltage electric appliance is normally operated or not based on whether the first level signal is received or not, and the reliability is high.
Drawings
One or more embodiments are illustrated by way of example and not limitation in the figures of the accompanying drawings, in which like references indicate similar elements, and in which the figures of the drawings are not to be taken in a limiting sense, unless otherwise indicated.
Fig. 1 is a schematic structural diagram of a load power supply control circuit according to an embodiment of the present disclosure;
fig. 2 is a schematic structural diagram of a load power supply control circuit according to another embodiment of the present disclosure;
fig. 3 is a schematic circuit diagram of a load power supply control circuit according to an embodiment of the present application.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a load power supply control circuit according to an embodiment of the present disclosure. As shown in fig. 1, the load power supply control circuit 100 includes a switching leg 10, a detecting leg 20, and a controller 30.
The first end of the switch branch 10 is connected to the controller 30, the second end of the switch branch 10 is connected to the first end of the first power V1, the second end of the first power V1 is connected to the first end of the load 200, the third end of the switch branch 10 is connected to the second end of the load 200, and the detection branch 20 is connected to the controller 30.
Specifically, the controller 30 is configured to output a control signal. The switching leg 10 comprises a coil KM, the switching leg 10 being arranged to conduct in response to a control signal for establishing a connection between a first terminal of the first power supply V1 and a second terminal of the load 200. Wherein the coil KM gets powered when the switching leg 10 receives the control signal. The detecting branch 20 is configured to output a first level signal to the controller 30 in response to a magnetic field generated when the coil KM is powered, so that the controller 30 determines that the switching branch 10 is turned on.
In practical applications, when the switch branch 10 needs to be controlled, the controller 30 outputs a control signal to the switch branch 10. In turn, the coil KM in the switching leg 10 is energized and the switching leg 10 is also turned on, a connection between the first terminal of the first power source V1 and the second terminal of the load 200 being established. The second terminal of the first power source V1 is also connected to the first terminal of the load 200, so that the first power source V1 is capable of supplying power to the load 200, i.e. the load 300. Meanwhile, a magnetic field is generated after the coil KM is powered, and the detecting branch 20 is capable of detecting the magnetic field and outputting a first level signal to the controller 30 in response to the magnetic field. The controller 30, upon receiving the first level signal, is able to determine that the switching leg 10 has been operated. Thus, in some embodiments, when the switching leg 10 includes an electromagnetic low-voltage apparatus, the controller 30 can determine whether the electromagnetic low-voltage apparatus has normally operated based on whether the first level signal is received, with high reliability.
In one embodiment, as shown in fig. 2, the switch branch 10 includes a first switch unit 11 and a second switch unit 12. Wherein the second switching unit 12 comprises a coil KM.
The first end of the first switch unit 11 is connected to the controller 30, the second end of the first switch unit 11 is connected to the first end of the second switch unit 12, the second end of the second switch unit 12 is connected to the second power V2, the third end of the second switch unit 12 is connected to the first end of the first power V1, and the fourth end of the second switch unit 12 is connected to the second end of the load 200. The first end of the coil KM is the first end of the second switch unit 12, and the second end of the coil KM is the second end of the second switch unit 12.
Specifically, the first switch unit 11 is configured to be turned on in response to a control signal, so that the second power source V2 supplies power to the coil KM. Corresponding to the coil KM being energized when the switching leg 10 receives the control signal.
The second switching unit 12 is configured to be turned on when the coil KM is energized, so as to establish a connection between the first terminal of the first power source V1 and the second terminal of the load 200, and the load 200 is energized. Wherein the second switching unit 12 is turned on for the corresponding switching branch 10.
Referring to fig. 3, one circuit configuration of the load power supply control circuit 100 is schematically shown in fig. 3.
In an embodiment, as shown in fig. 3, the first switching unit 11 includes a first resistor R1 and a first switching tube Q1.
The first end of the first resistor R1 is connected to the controller 30, the second end of the first resistor R1 is connected to the first end of the first switching tube Q1, the second end of the first switching tube Q1 is grounded GND, and the third end of the first switching tube Q1 is connected to the first end of the second switching unit 12. The first end of the first resistor R1 is a first end of the first switch unit 11, and the third end of the first switch tube Q1 is a second end of the first switch unit 11.
Specifically, the first resistor R1 is a current limiting resistor. However, when the controller 30 outputs the control signal, the control signal acts on the first end of the first switching tube Q1 to turn on the first switching tube Q1. The second power supply V1, the coil KM in the second switching unit 12 and the first switching tube Q1 form a loop, and the coil KM is powered.
It can be understood that, in this embodiment, the first switching tube Q1 is taken as an NPN type triode as an example, so the control signal output by the controller 30 should be a high level signal, and the voltage of the high level signal is greater than the conduction voltage drop of the first switching tube Q1, so as to drive the first switching tube Q1 to be turned on.
Meanwhile, in this embodiment, the first switching transistor Q1 is taken as an NPN transistor as an example. The base electrode of the NPN triode is the first end of the first switching tube Q1, the emitter electrode of the NPN triode is the second end of the first switching tube Q1, and the collector electrode of the NPN triode is the third end of the first switching tube Q1.
In addition, the first switching transistor Q1 may be any controllable switch, such as an Insulated Gate Bipolar Transistor (IGBT) device, an Integrated Gate Commutated Thyristor (IGCT) device, a gate turn-off thyristor (GTO) device, a Silicon Controlled Rectifier (SCR) device, a junction gate field effect transistor (JFET) device, a MOS Controlled Thyristor (MCT) device, or the like. Furthermore, the first switching tube Q1 shown in fig. 3 may be implemented as a plurality of switches connected in parallel.
In one embodiment, the second switching unit 12 includes an electromagnetic low-voltage electric device K1, and the electromagnetic low-voltage electric device K1 includes a coil KM and a pair of normally open contacts S1.
Wherein, the first end of the coil KM is connected to the second end of the first switch unit 11, the second end of the coil KM is connected to the second power source V2, a first contact of the pair of normally open contacts S1 is connected to the first end of the first power source V1, and a second contact of the pair of normally open contacts S1 is connected to the second end of the load 200. A first contact of the pair of normally open contacts S1 is the third terminal of the second switching unit 12, and a second contact of the pair of normally open contacts S1 is the fourth terminal of the second switching unit 12.
Specifically, when the first switching tube Q1 is turned on, the first end of the coil KM is grounded GND, and the second end of the coil KM is connected to the second power V2, the second power V2 supplies power to the coil KM. In turn, a pair of normally open contacts S1 are closed, and a first end of the first power source V1 is connected to a second end of the load 200. The second end of the first power source V1 is also connected to the first end of the load 200, so that the first power source V1 can supply power to the load 200 and the load 200 is powered.
In some embodiments, the electromagnetic appliance K1 may include at least one of a relay or a contactor.
In one embodiment, the detection branch 20 includes a hall sensor U1.
The power supply end of the hall sensor U1 (i.e., the 1 st pin of the hall sensor U1) is connected to the third power supply V3, the ground end of the hall sensor U1 (i.e., the 3 rd pin of the hall sensor U1) is grounded, and the signal output end of the hall sensor (i.e., the 2 nd pin of the hall sensor U1) is connected to the controller 30.
In this embodiment, when the coil KM is not powered, no magnetic field is generated, the signal output end of the hall sensor U1 keeps outputting the second level signal to the controller 30, and the controller 30 determines that the coil KM is not powered, that is, determines that the switching leg 10 is not operated; when the coil KM is powered on and generates a magnetic field, the hall sensor U1 senses the magnetic field, and the signal output end of the hall sensor U1 outputs a first level signal to the controller 30, and the controller 30 determines that the coil KM is powered on, that is, determines that the switching branch 10 is operated. Wherein the first level signal and the second level signal are signals with different levels to facilitate the distinction of the controller 30. For example, when the first level signal is a low level signal, the second level signal is a high level signal.
In some embodiments, hall sensor U1 may be selected from hall sensors model number ALLEGRO a 329X.
In another embodiment, the detection branch 20 further includes a second resistor R2 and a first capacitor C1.
The first end of the second resistor R2 is connected with the power supply end of the Hall sensor U1, the second end of the second resistor R2 is respectively connected with the signal output end of the Hall sensor U1 and the first end of the first capacitor C1, and the second end of the first capacitor C1 is grounded.
Specifically, the second resistor R2 is a pull-up resistor. The first capacitor C1 is a filter capacitor.
The embodiment of the application also provides an electronic device, which comprises the load power supply control circuit 100 in any embodiment of the application.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting thereof; the technical features of the above embodiments or in the different embodiments may also be combined under the idea of the present application, the steps may be implemented in any order, and there are many other variations of the different aspects of the present application as described above, which are not provided in details for the sake of brevity; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A load power supply control circuit, comprising:
the device comprises a switch branch, a detection branch and a controller;
the first end of the switch branch is connected with the controller, the second end of the switch branch is connected with the first end of the first power supply, the second end of the first power supply is connected with the first end of the load, the third end of the switch branch is connected with the second end of the load, and the detection branch is connected with the controller;
the controller is used for outputting a control signal;
the switching branch comprises a coil, and the switching branch is used for being conducted in response to the control signal so as to establish connection between a first end of the first power supply and a second end of the load, wherein the coil is powered when the switching branch receives the control signal;
the detection branch is used for responding to a magnetic field generated when the coil is powered on and outputting a first level signal to the controller so that the controller can determine that the switch branch is conducted.
2. The load supply control circuit of claim 1 wherein the switching branch comprises a first switching unit and a second switching unit, wherein the second switching unit comprises the coil;
the first end of the first switch unit is connected with the controller, the second end of the first switch unit is connected with the first end of the second switch unit, the second end of the second switch unit is connected with a second power supply, the third end of the second switch unit is connected with the first end of the first power supply, the fourth end of the second switch unit is connected with the second end of the load, wherein the first end of the coil is the first end of the second switch unit, and the second end of the coil is the second end of the second switch unit;
the first switch unit is used for responding to the control signal to conduct so that the second power supply supplies power to the coil;
the second switch unit is used for being conducted when the coil is electrified so as to establish connection between the first end of the first power supply and the second end of the load.
3. The load supply control circuit of claim 2 wherein the first switching unit comprises a first resistor and a first switching tube;
the first end of the first resistor is connected with the controller, the second end of the first resistor is connected with the first end of the first switching tube, the second end of the first switching tube is grounded, and the third end of the first switching tube is connected with the first end of the second switching unit.
4. The load power supply control circuit of claim 3 wherein the first switching tube is an NPN transistor;
the base electrode of the NPN triode is the first end of the first switching tube, the emitting electrode of the NPN triode is the second end of the first switching tube, and the collector electrode of the NPN triode is the third end of the first switching tube.
5. The load power supply control circuit of claim 2 wherein the second switching unit comprises an electromagnetic low voltage electrical appliance comprising the coil and a pair of normally open contacts;
the first end of the coil is connected with the second end of the first switch unit, the second end of the coil is connected with the second power supply, a first contact of the pair of normally open contacts is connected with the first end of the first power supply, and a second contact of the pair of normally open contacts is connected with the second end of the load.
6. The load power control circuit of claim 5 wherein the electromagnetic low voltage electrical device comprises at least one of a relay and a contactor.
7. The load supply control circuit of claim 1 wherein the detection branch comprises a hall sensor;
the power supply end of the Hall sensor is connected with a third power supply, the grounding end of the Hall sensor is grounded, and the signal output end of the Hall sensor is connected with the controller.
8. The load supply control circuit of claim 7 wherein the sense branch further comprises a second resistor and a first capacitor;
the first end of the second resistor is connected with the power supply end of the Hall sensor, the second end of the second resistor is respectively connected with the signal output end of the Hall sensor and the first end of the first capacitor, and the second end of the first capacitor is grounded.
9. An electronic device comprising a load supply control circuit as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320123935.3U CN219497641U (en) | 2023-02-06 | 2023-02-06 | Load power supply control circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320123935.3U CN219497641U (en) | 2023-02-06 | 2023-02-06 | Load power supply control circuit and electronic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219497641U true CN219497641U (en) | 2023-08-08 |
Family
ID=87475701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320123935.3U Active CN219497641U (en) | 2023-02-06 | 2023-02-06 | Load power supply control circuit and electronic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219497641U (en) |
-
2023
- 2023-02-06 CN CN202320123935.3U patent/CN219497641U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10038380B2 (en) | Apparatus for controlling insulating gate-type semiconductor element, and power conversion apparatus using apparatus for controlling insulating gate-type semiconductor element | |
| US6381110B1 (en) | Method and apparatus for detecting isolation faults in motor/inverter systems | |
| CN109599845B (en) | Protection circuit, upper bridge driving chip and IPM module | |
| US9300207B2 (en) | Switching control circuit and control method thereof | |
| US8373960B2 (en) | Driving circuit for AC contactor | |
| EP3432472B1 (en) | Solenoid diagnostics digital interface | |
| CN107404778B (en) | Electromagnetic heating cooking system and driving control circuit and detection method thereof | |
| CN110071620B (en) | Control circuit, voltage source circuit, driving device and driving method | |
| CN219497641U (en) | Load power supply control circuit and electronic equipment | |
| CN105684312A (en) | Semiconductor device | |
| US7737762B2 (en) | Solid-state switch | |
| JP2014239380A (en) | Abnormality detection device for electromagnetic device drive device | |
| CN107623510B (en) | Vehicle solid-state relay with overcurrent protection and PMOS (P-channel metal oxide semiconductor) tube | |
| CN205304756U (en) | IGBT driver | |
| CN220933145U (en) | Solid-state switching device and self-checking circuit thereof | |
| CN213426134U (en) | Novel three-wire system inductance proximity switch is used for circuit of two-wire system controlgear | |
| CN219780012U (en) | Dual-motor control circuit and variable frequency household appliance | |
| JP2015119594A (en) | Drive control device of semiconductor device | |
| CN217469447U (en) | Overcurrent protection circuit and electrical equipment | |
| CN219285273U (en) | Zero-crossing detection circuit, circuit board and electronic equipment | |
| CN217563524U (en) | Control circuit and electronic equipment | |
| CN216772282U (en) | Heating circuit and electrical equipment | |
| CN110690882A (en) | Motor drive circuit and switching tube drive circuit thereof | |
| CN216749740U (en) | Relay circuit and relay equipment | |
| CN101114828A (en) | Closedown zero power consumption touching electronic switch |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |