CN218825212U - Intelligent switch controller based on current sensor - Google Patents
Intelligent switch controller based on current sensor Download PDFInfo
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- CN218825212U CN218825212U CN202222598948.4U CN202222598948U CN218825212U CN 218825212 U CN218825212 U CN 218825212U CN 202222598948 U CN202222598948 U CN 202222598948U CN 218825212 U CN218825212 U CN 218825212U
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Abstract
The utility model discloses an intelligent switch controller based on a current sensor, which relates to the technical field of electronic circuits and comprises a current detection module used for current detection; the signal conditioning module is used for amplifying signals; the gain adjustable processing module is used for adjustable amplification of signal gain; the first overcurrent judgment module and the second overcurrent judgment module are used for overcurrent judgment; the first driving module and the second driving module are used for improving the driving capability of signals; the detection precision judging module is used for judging the detection precision; and the intelligent switch control module is used for controlling the on-off of the switch control circuit. The utility model discloses intelligent switch controller based on current sensor adopts two kinds of signal conditioning circuit to carry out the enlarged processing of different degrees to the current signal that detects, provides the current value of two kinds of precisions to overcurrent judgment is carried out to two kinds of signals respectively, and control switch control circuit carries out overcurrent protection when overflowing, and judges whether two kinds of signals all overflow.
Description
Technical Field
The utility model relates to an electronic circuit technical field specifically is an intelligence switch controller based on current sensor.
Background
Along with the continuous progress of science and technology, electronic equipment is for accomplishing more complicacy and manifold function, its inside system is comparatively complicated and the wiring is numerous, and adopt intelligent switch controller to accomplish control and protection to electronic equipment mostly, current intelligent switch controller is for realizing intelligent control, can directly be connected work with current transformer, realize the overcurrent protection to intelligent switch controller through the relevant detection protection circuit of current transformer, but only adopt current transformer circuit all the way when detecting and protection control intelligent switch controller, easily because the ageing of components and parts or external temperature's influence, and lead to detecting the error, reduce intelligent switch controller's reliability and security, consequently, remain to improve.
SUMMERY OF THE UTILITY MODEL
An embodiment of the utility model provides an intelligence switch controller based on current sensor to solve the problem that proposes among the above-mentioned background art.
The basis the embodiment of the utility model provides an in, provide an intelligence switch controller based on current sensor, this intelligence switch controller based on current sensor includes: the intelligent switch control system comprises a current detection module, a signal conditioning module, an adjustable gain processing module, a first overcurrent judgment module, a second overcurrent judgment module, a first driving module, a second driving module, a detection precision judgment module and an intelligent switch control module;
the current detection module is used for detecting the current of the electronic equipment through the current transformer circuit and outputting a current signal;
the signal conditioning module is connected with the current detection module, is used for carrying out double amplification and filtering processing on the current signal, and is used for outputting a first conditioning signal;
the gain adjustable processing module is connected with the current detection module, is used for carrying out two-to-twelve-fold amplification and filtering processing on the current signal, and is used for outputting a second conditioning signal;
the first overcurrent judging module is connected with the signal conditioning module, is used for receiving the first conditioning signal, compares the first conditioning signal with a set first current threshold value, judges whether overcurrent occurs and outputs a first control signal;
the second overcurrent judgment module is connected with the gain-adjustable processing module, and is configured to receive the second conditioning signal, compare the second conditioning signal with a set second current threshold, judge whether an overcurrent occurs, and output a second control signal;
the first driving module is connected with the first overcurrent judging module and used for improving the driving capability of the first control signal and outputting a first driving signal;
the second driving module is connected with the second overcurrent judging module and used for improving the driving capability of the second control signal and outputting a second driving signal;
the detection precision judging module is connected with the first driving module and the second driving module, and is used for carrying out logic operation on the first driving signal and the second driving signal and judging detection precision and carrying out error alarm;
and the intelligent switch control module is connected with the first driving module and the second driving module and is used for receiving the first driving signal and the second driving signal and controlling the on-off of the switch control circuit.
Compared with the prior art, the beneficial effects of the utility model are that: the utility model discloses intelligent switch controller based on current sensor adopts signal conditioning module and gain adjustable processing module to carry out the enlarged processing of different degrees to the current signal that detects, the current value of two kinds of precisions is provided, and overflow the judgement module by first overflow respectively and the second and judge that the module overflows, and when overflowing, first drive module and second drive module all can control intelligent switch control module and carry out overcurrent protection, carry out the logic operation by detecting precision judgement module to two kinds of signals simultaneously and handle, judge whether two kinds of signals that detect are the overflow, be convenient for judge intelligent switch controller overcurrent protection's reliability, improve the detection precision to current signal.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments of the present invention will be briefly introduced below, and 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 these drawings without creative efforts.
Fig. 1 is the utility model discloses the example provides a principle block diagram of intelligent switch controller based on current sensor.
Fig. 2 is a circuit diagram of the utility model discloses an intelligence switch controller based on current sensor that the example provided.
Fig. 3 is a circuit diagram of the detection precision determining module according to the embodiment of the present invention.
Detailed Description
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 work belong to the protection scope of the present invention.
Embodiment 1, referring to fig. 1, an intelligent switch controller based on a current sensor includes: the device comprises a current detection module 1, a signal conditioning module 2, a gain-adjustable processing module 3, a first overcurrent judgment module 4, a second overcurrent judgment module 5, a first driving module 6, a second driving module 7, a detection precision judgment module 8 and an intelligent switch control module 9;
specifically, the current detection module 1 is configured to perform current detection on an electronic device through a current transformer circuit and output a current signal;
the signal conditioning module 2 is connected with the current detection module 1, and is used for performing double amplification and filtering processing on the current signal and outputting a first conditioning signal;
the gain adjustable processing module 3 is connected with the current detection module 1, and is used for performing two-to-twelve-fold amplification and filtering processing on the current signal and outputting a second conditioning signal;
the first overcurrent judging module 4 is connected with the signal conditioning module 2, and is used for receiving the first conditioning signal, comparing the first conditioning signal with a set first current threshold, judging whether overcurrent occurs and outputting a first control signal;
the second overcurrent judgment module 5 is connected with the gain-adjustable processing module 3, and is configured to receive the second conditioning signal, compare the second conditioning signal with a set second current threshold, judge whether an overcurrent occurs, and output a second control signal;
the first driving module 6 is connected with the first overcurrent judging module 4 and is used for improving the driving capability of the first control signal and outputting a first driving signal;
the second driving module 7 is connected with the second overcurrent judging module 5 and is used for improving the driving capability of the second control signal and outputting a second driving signal;
the detection precision judging module 8 is connected with the first driving module 6 and the second driving module 7, and is used for performing logic operation on the first driving signal and the second driving signal, judging the detection precision and performing error alarm;
and the intelligent switch control module 9 is connected with the first driving module 6 and the second driving module 7 and is used for receiving the first driving signal and the second driving signal and controlling the on-off of the switch control circuit.
In a specific embodiment, the current detection module 1 may use a current transformer circuit to detect the current of the electronic device; the signal conditioning module 2 and the gain-adjustable processing module 3 can both adopt an operational amplifier circuit to amplify an input signal and adopt a filter capacitor circuit to filter the input signal, wherein the gain-adjustable processing module 3 adopts a potentiometer mode to adjust the amplification gain of the operational amplifier circuit; the first overcurrent judging module 4 and the second overcurrent judging module 5 can both adopt a comparison circuit, and are respectively compared with a set first current threshold and a set second current threshold so as to judge whether the two signals are overcurrent or not; the first driving module 6 and the second driving module 7 can both adopt driving circuits composed of triodes, and are used for improving the driving capability of input signals; the detection precision judging module 8 can adopt a logic operation circuit and a triode alarm circuit, and the logic operation circuit judges whether the two paths are simultaneously overcurrent so as to trigger the triode alarm circuit to alarm; the intelligent switch control module 9 may control transmission of electric energy or signals by using a power tube circuit.
Further, the current detection module 1 includes a first transformer CT, a first resistor R1, a first capacitor C1, and a second capacitor C2;
specifically, a first output end of the first transformer CT is connected to one end of the first resistor R1 and connected to the ground through the first capacitor C1, and a second output end of the first transformer CT is connected to the other end of the first resistor R1 and connected to the ground through the second capacitor C2.
In a specific embodiment, the first transformer CT may be a current transformer.
Further, the signal conditioning module 2 includes a second resistor R2, a third resistor R3, a fourth resistor R4, a first operational amplifier OP1, and a third capacitor C3;
specifically, one end of the second resistor R2 and the in-phase end of the first operational amplifier OP1 are respectively connected to the second output end and the first output end of the first transformer CT, the other end of the second resistor R2 is connected to the inverting end of the first operational amplifier OP1 and is connected to the first end of the fourth resistor R4, one end of the third capacitor C3 and the first overcurrent judgment module 4 through the third resistor R3, the second end of the fourth resistor R4 is connected to the output end of the first operational amplifier OP1, and the other end of the third capacitor C3 is connected to the ground.
Further, the gain-adjustable processing module 3 includes a fifth resistor R5, a first potentiometer RP1, a sixth resistor R6, a second operational amplifier OP2, and a fourth capacitor C4;
specifically, one end of the fifth resistor R5 and the in-phase end of the second operational amplifier OP2 are respectively connected to the second output end and the first output end of the first transformer CT, the other end of the fifth resistor R5 is connected to the inverting end of the second operational amplifier OP2 and is connected to the slider end of the first potentiometer RP1, the first end of the sixth resistor R6, one end of the fourth capacitor C4 and the second overcurrent judgment module 5 through the first potentiometer RP1, the other end of the fourth capacitor C4 is connected to the ground, and the second end of the sixth resistor R6 is connected to the output end of the second operational amplifier OP 2.
In a specific embodiment, both the first operational amplifier OP1 and the second operational amplifier OP2 may be LMV324 chips; the third resistor R3 determines the first operational amplifier OP1 to perform double gain amplification, and the first potentiometer RP1 determines the second operational amplifier OP2 to perform double to twelve gain amplification; the third capacitor C3 and the fourth capacitor C4 are used for filtering.
Further, the first overcurrent judging module 4 includes a first power supply VCC1, a seventh resistor R7, an eighth resistor R8, a first comparator A1, a tenth resistor R10, and a second power supply VCC1;
specifically, first power VCC1 connects first comparator A1's inverting terminal and eighth resistance R8's one end through seventh resistance R7, and the ground connection end is connected to eighth resistance R8's the other end, and first comparator A1's homophase end is connected fourth resistance R4's first end, and first comparator A1's output is connected first drive module 6 connects second power VCC1 through tenth resistance R10.
Further, the second overcurrent judging module 5 includes a ninth resistor R9, a second potentiometer RP2, a second comparator A2, a seventeenth resistor R17, and a third power VCC3;
specifically, ninth resistance R9's one end is connected first power VCC1, and second comparator A2's inverting terminal and second potentiometre RP 2's slider end and the ground connection end through second potentiometre RP2 are connected to ninth resistance R9's the other end, and second comparator A2's output is connected second drive module 7 and connect third power VCC3 through seventeenth resistance R17, and second comparator A2's homophase end is connected the first end of sixth resistance R6.
In a specific embodiment, the first comparator A1 and the second comparator A2 may both be LM339 comparators; the seventh resistor R7 and the eighth resistor R8 form a first current threshold, which is used as a critical point of overcurrent detection; the ninth resistor R9 and the second potentiometer RP2 form a second current threshold, wherein the magnitude of the second current threshold needs to be changed along with the change of the amplification gain, which is not described herein again.
Further, the first driving module 6 includes a first diode D1, an eleventh resistor R11, a first switching tube Q1, a twelfth resistor R12, a thirteenth resistor R13, a third switching tube VT3, a fourth switching tube VT4, and a fifth capacitor C5;
specifically, the anode of the first diode D1 is connected to the second power source VCC1, the cathode of the first diode D1 is connected to one end of an eleventh resistor R11, the collector of the fourth switching tube VT4 and one end of a fifth capacitor C5, the other end of the eleventh resistor R11 is connected to one end of a twelfth resistor R12 and the collector of the first switching tube Q1, the other end of the twelfth resistor R12 is connected to the base of the third switching tube VT3 and the base of the fourth switching tube VT4, the emitter of the first switching tube Q1 and one end of the thirteenth resistor R13 are both grounded, the other end of the thirteenth resistor R13 is connected to the emitter of the third switching tube VT3 and the other end of the fifth capacitor C5, the emitter of the third switching tube VT3 is connected to the emitter of the fourth switching tube VT4, and the base of the first switching tube Q1 is connected to the output terminal of the first comparator A1.
Further, the second driving module 7 includes a second diode D2, a sixteenth resistor R16, a second switching tube VT2, a fifteenth resistor R15, a fourteenth resistor R14, a fifth switching tube VT5, a sixth switching tube VT6, and a sixth capacitor C6;
specifically, the anode of the second diode D2 is connected to the third power supply VCC3, the cathode of the second diode D2 is connected to the collector of the sixth switching tube VT6 and one end of the sixth capacitor C6, and is connected to the collector of the second switching tube VT2 and one end of the fifteenth resistor R15 through the sixteenth resistor R16, the other end of the fifteenth resistor R15 is connected to the base of the sixth switching tube VT6 and the base of the fifth switching tube VT5, the base of the second switching tube VT2 is connected to the output end of the second comparator A2, the collector of the fifth switching tube VT5 and the other end of the sixth capacitor C6 are connected to the emitter and the ground of the second switching tube VT2 through the fourteenth resistor R14, and the emitter of the fifth switching tube VT5 is connected to the emitter of the sixth switching tube VT 6.
In a specific embodiment, the first switch tube Q1, the second switch tube VT2, the fourth switch tube VT4, and the sixth switch tube VT6 may all use NPN triodes, and the fourth switch tube VT4 and the fifth switch tube VT5 may use PNP triodes, where the first switch tube Q1 and the second switch tube VT2 are respectively configured to receive signals output by the first comparator A1 and the second comparator A2, and the third switch tube VT3 and the fourth switch tube VT4, and the fifth switch tube VT5 and the sixth switch tube VT6 respectively form a push-pull circuit.
Further, the intelligent switch control module 9 includes a first power tube Q1, a second power tube Q2, a third power tube Q3, an eighteenth resistor R18, an input port and an output port; the detection precision judging module 8 comprises a first logic chip U1, a nineteenth resistor R19, a seventh switching tube VT7, a fourth power supply VCC4 and an alarm device;
specifically, the gate of the first power tube Q1 and the first end of the first logic chip U1 are both connected to the emitter of the third switching tube VT3, the drain of the first power tube Q1 is connected to the gate of the second power tube Q2 and the drain of the third power tube Q3, and is connected to the drain and the input port of the second power tube Q2 through an eighteenth resistor R18, the source of the second power tube Q2 is connected to the output port, the source of the first power tube Q1 and the source of the third power tube Q3 are both grounded, the gate of the third power tube Q3 and the second end of the first logic chip U1 are both connected to the emitter of the sixth switching tube VT6, the third end of the first logic chip U1 is connected to the base of the seventh switching tube VT7 through a nineteenth resistor R19, the collector of the seventh switching tube VT7 is connected to the fourth power supply VCC4 through an alarm device, and the emitter of the seventh switching tube VT7 is connected to the ground.
In a specific embodiment, the first power transistor Q1, the second power transistor Q2, and the third power transistor Q3 may all be N-channel enhancement MOS transistors; the first logic chip U1 can select an exclusive-OR gate logic circuit; the seventh switching transistor VT7 may be an NPN transistor.
It should be noted that V1 and V2 shown in fig. 2 and V1 and V2 shown in fig. 3 are only used to show that the V1 terminal in fig. 2 is connected to the V1 terminal in fig. 3, and the V2 terminal in fig. 2 is connected to the V2 terminal in fig. 3, which are not described herein again.
The utility model relates to an intelligent switch controller based on current sensor, detect the electric current of electronic equipment by first mutual-inductor CT, and put OP1 and second fortune by first fortune and put OP2 and carry out signal amplification respectively, the gain of amplification is twice, twice to twelve times respectively, the signal after the amplification is carried out comparison processing by first comparator A1 and second comparator A2 respectively, when the current signal of amplifying twice exceeds first current threshold, first comparator A1 exports the high level, when the current signal of amplifying twice to twelve times exceeds second current threshold, the output high level of second comparator A2, the high level of output controls corresponding first switch tube Q1 and second switch tube VT2 to switch on respectively, improve the driving force of input signal, the first logic chip U1 outputs high level to control the seventh switch tube VT7 to be conducted when one driving signal is low level (overcurrent does not occur) and one driving signal is high level (overcurrent occurs), the alarm device gives an alarm to indicate that the sampled current has errors, wherein the current sampling degree of the first mutual inductor CT is unchanged, when high voltage is sampled, double amplification detection can be carried out through the first operational amplifier OP1, and when low voltage is sampled, double to twelve amplification detection can be carried out through the second operational amplifier OP 2.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (9)
1. An intelligent switch controller based on a current sensor is characterized in that,
this intelligent switch controller based on current sensor includes: the device comprises a current detection module, a signal conditioning module, a gain adjustable processing module, a first overcurrent judgment module, a second overcurrent judgment module, a first driving module, a second driving module, a detection precision judgment module and an intelligent switch control module;
the current detection module is used for detecting the current of the electronic equipment through the current transformer circuit and outputting a current signal;
the signal conditioning module is connected with the current detection module, is used for carrying out double amplification and filtering processing on the current signal, and is used for outputting a first conditioning signal;
the gain adjustable processing module is connected with the current detection module, is used for carrying out two-to-twelve-fold amplification and filtering processing on the current signal, and is used for outputting a second conditioning signal;
the first overcurrent judging module is connected with the signal conditioning module, is used for receiving the first conditioning signal, compares the first conditioning signal with a set first current threshold value, judges whether overcurrent occurs and outputs a first control signal;
the second overcurrent judgment module is connected with the gain-adjustable processing module, and is configured to receive the second conditioning signal, compare the second conditioning signal with a set second current threshold, judge whether an overcurrent occurs, and output a second control signal;
the first driving module is connected with the first overcurrent judging module and used for improving the driving capability of the first control signal and outputting a first driving signal;
the second driving module is connected with the second overcurrent judging module and used for improving the driving capability of the second control signal and outputting a second driving signal;
the detection precision judging module is connected with the first driving module and the second driving module, and is used for carrying out logic operation on the first driving signal and the second driving signal and judging detection precision and carrying out error alarm;
the intelligent switch control module is connected with the first driving module and the second driving module and used for receiving the first driving signal and the second driving signal and controlling the on-off of the switch control circuit.
2. The intelligent switch controller based on current sensors as claimed in claim 1, wherein the current detection module comprises a first transformer, a first resistor, a first capacitor, a second capacitor;
the first output end of the first mutual inductor is connected with one end of the first resistor and is connected with the ground end through the first capacitor, and the second output end of the first mutual inductor is connected with the other end of the first resistor and is connected with the ground end through the second capacitor.
3. The intelligent switch controller based on current sensor as claimed in claim 2, wherein the signal conditioning module comprises a second resistor, a third resistor, a fourth resistor, a first operational amplifier, a third capacitor;
one end of the second resistor and the in-phase end of the first operational amplifier are respectively connected with the second output end and the first output end of the first mutual inductor, the other end of the second resistor is connected with the inverting end of the first operational amplifier and is connected with the first end of the fourth resistor, one end of the third capacitor and the first overcurrent judgment module through the third resistor, the second end of the fourth resistor is connected with the output end of the first operational amplifier, and the other end of the third capacitor is connected with the ground end.
4. The intelligent switch controller based on current sensor as claimed in claim 3, wherein said gain adjustable processing module comprises a fifth resistor, a first potentiometer, a sixth resistor, a second operational amplifier, a fourth capacitor;
one end of the fifth resistor and the in-phase end of the second operational amplifier are respectively connected with the second output end and the first output end of the first mutual inductor, the other end of the fifth resistor is connected with the inverting end of the second operational amplifier and is connected with the slide sheet end of the first potentiometer, the first end of the sixth resistor, one end of the fourth capacitor and the second overcurrent judging module through the first potentiometer, the other end of the fourth capacitor is connected with the ground end, and the second end of the sixth resistor is connected with the output end of the second operational amplifier.
5. The intelligent switch controller based on the current sensor as claimed in claim 4, wherein the first over-current judging module comprises a first power supply, a seventh resistor, an eighth resistor, a first comparator, a tenth resistor and a second power supply;
the first power supply is connected with the inverting terminal of the first comparator and one end of the eighth resistor through the seventh resistor, the other end of the eighth resistor is connected with the ground terminal, the non-inverting terminal of the first comparator is connected with the first end of the fourth resistor, and the output end of the first comparator is connected with the first driving module and is connected with the second power supply through the tenth resistor.
6. The intelligent switch controller based on the current sensor as claimed in claim 5, wherein the second over-current determining module comprises a ninth resistor, a second potentiometer, a second comparator, a seventeenth resistor and a third power supply;
one end of the ninth resistor is connected with the first power supply, the other end of the ninth resistor is connected with the inverting terminal of the second comparator and the slide piece terminal of the second potentiometer and is connected with the ground terminal through the second potentiometer, the output terminal of the second comparator is connected with the second driving module and is connected with the third power supply through the seventeenth resistor, and the non-inverting terminal of the second comparator is connected with the first end of the sixth resistor.
7. The intelligent switch controller based on the current sensor as claimed in claim 6, wherein the first driving module comprises a first diode, an eleventh resistor, a first switch tube, a twelfth resistor, a thirteenth resistor, a third switch tube, a fourth switch tube, a fifth capacitor;
the anode of the first diode is connected with the second power supply, the cathode of the first diode is connected with one end of an eleventh resistor, the collector of a fourth switch tube and one end of a fifth capacitor, the other end of the eleventh resistor is connected with one end of a twelfth resistor and the collector of the first switch tube, the other end of the twelfth resistor is connected with the base of the third switch tube and the base of the fourth switch tube, the emitter of the first switch tube and one end of the thirteenth resistor are both grounded, the other end of the thirteenth resistor is connected with the emitter of the third switch tube and the other end of the fifth capacitor, the emitter of the third switch tube is connected with the emitter of the fourth switch tube, and the base of the first switch tube is connected with the output end of the first comparator.
8. The intelligent switch controller based on current sensor as claimed in claim 7, wherein the second driving module comprises a second diode, a sixteenth resistor, a second switch tube, a fifteenth resistor, a fourteenth resistor, a fifth switch tube, a sixth capacitor;
the anode of the second diode is connected with the third power supply, the cathode of the second diode is connected with the collector of the sixth switching tube and one end of the sixth capacitor, the collector of the second switching tube and one end of the fifteenth resistor are connected through the sixteenth resistor, the other end of the fifteenth resistor is connected with the base of the sixth switching tube and the base of the fifth switching tube, the base of the second switching tube is connected with the output end of the second comparator, the collector of the fifth switching tube and the other end of the sixth capacitor are connected with the emitter and the ground of the second switching tube through the fourteenth resistor, and the emitter of the fifth switching tube is connected with the emitter of the sixth switching tube.
9. The intelligent switch controller based on the current sensor as claimed in claim 8, wherein the intelligent switch control module comprises a first power tube, a second power tube, a third power tube, an eighteenth resistor, an input port and an output port; the detection precision judging module comprises a first logic chip, a nineteenth resistor, a seventh switching tube, a fourth power supply and an alarm device;
the grid electrode of the first power tube and the first end of the first logic chip are both connected with the emitter electrode of the third switch tube, the drain electrode of the first power tube is connected with the grid electrode of the second power tube and the drain electrode of the third power tube and is connected with the drain electrode and the input port of the second power tube through an eighteenth resistor, the source electrode of the second power tube is connected with the output port, the source electrode of the first power tube and the source electrode of the third power tube are both grounded, the grid electrode of the third power tube and the second end of the first logic chip are both connected with the emitter electrode of the sixth switch tube, the third end of the first logic chip is connected with the base electrode of the seventh switch tube through a nineteenth resistor, the collector electrode of the seventh switch tube is connected with the fourth power supply through an alarm device, and the emitter electrode of the seventh switch tube is connected with the ground end.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222598948.4U CN218825212U (en) | 2022-09-29 | 2022-09-29 | Intelligent switch controller based on current sensor |
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| CN202222598948.4U CN218825212U (en) | 2022-09-29 | 2022-09-29 | Intelligent switch controller based on current sensor |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116773896A (en) * | 2023-08-23 | 2023-09-19 | 深圳市新蕾电子有限公司 | Current detection circuit |
| CN117111520A (en) * | 2023-09-12 | 2023-11-24 | 中航试金石检测科技(大厂)有限公司 | Laboratory environment monitoring system |
-
2022
- 2022-09-29 CN CN202222598948.4U patent/CN218825212U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116773896A (en) * | 2023-08-23 | 2023-09-19 | 深圳市新蕾电子有限公司 | Current detection circuit |
| CN116773896B (en) * | 2023-08-23 | 2023-11-21 | 深圳市新蕾电子有限公司 | Current detection circuit |
| CN117111520A (en) * | 2023-09-12 | 2023-11-24 | 中航试金石检测科技(大厂)有限公司 | Laboratory environment monitoring system |
| CN117111520B (en) * | 2023-09-12 | 2024-02-20 | 中航试金石检测科技(大厂)有限公司 | Laboratory environment monitoring system |
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