CN212483831U - Detection circuit capable of automatically detecting state of mutual inductor - Google Patents
Detection circuit capable of automatically detecting state of mutual inductor Download PDFInfo
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- CN212483831U CN212483831U CN202020883836.1U CN202020883836U CN212483831U CN 212483831 U CN212483831 U CN 212483831U CN 202020883836 U CN202020883836 U CN 202020883836U CN 212483831 U CN212483831 U CN 212483831U
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Abstract
The utility model discloses a detection circuitry who possesses automatic detection mutual-inductor state for to the detection of external mutual-inductor, keep apart sampling circuit and detected signal and keep apart output circuit including power regulating circuit, proximity switch signal, power regulating circuit respectively with proximity switch signal keeps apart sampling circuit with detected signal keeps apart output circuit electric connection. The utility model discloses a detection circuitry who possesses automatic detection mutual-inductor state, during external buckle formula mutual-inductor was installed to its cooperation proximity switch, can realize carrying out real-time detection to the side installation state that inclines of external mutual-inductor, according to the detection that the state output that external mutual-inductor inclines once corresponds.
Description
Technical Field
The utility model belongs to the technical field of electric power detects together, concretely relates to detection circuitry who possesses automatic detection mutual-inductor state.
Background
Most mutual-inductor inserts electric energy meter of formula and just carries out corresponding measurement according to the signal of mutual-inductor secondary side output to do not possess and detect the judgement to the state of mutual-inductor this moment, if whether the straining detects to the primary side buckle of open-close type mutual-inductor, judge to whether open a way to the mutual-inductor secondary side. When the installation state of the mutual inductor changes, the electric energy meter cannot acquire corresponding information at the first time, a user with a metering error caused by the change cannot know the information at the first time, the electric energy meter is likely to be damaged or the electric energy is likely to be lost, and a serious person can cause certain safety hazards.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a detection circuit with automatic detection mutual-inductor state, during external buckle formula mutual-inductor was installed to its cooperation proximity switch, can realize carrying out real-time detection to the side installation state that once inclines of external mutual-inductor, according to the detection that the state output that once inclines of external mutual-inductor corresponds.
Another object of the utility model is to provide a detection circuitry who possesses automatic detection mutual-inductor state, through foretell detection means, this external equipment can realize the real-time detection function to the side state once of external mutual-inductor through the signal of this detection circuitry output, has avoided because follow-up measurement that the installation problem of mutual-inductor leads to is inaccurate, the electric energy loses the scheduling problem, improves electrical parameter measurement's accuracy and security.
In order to achieve the above object, the present invention provides a detection circuit with automatic detection of the state of a mutual inductor, for detecting an external mutual inductor, comprising a power supply regulation circuit, a proximity switch signal isolation sampling circuit and a detection signal isolation output circuit, wherein the power supply regulation circuit is electrically connected with the proximity switch signal isolation sampling circuit and the detection signal isolation output circuit respectively;
the power supply regulating circuit comprises a transformer T2, a power chip U4, a voltage stabilizer U2 and a voltage stabilizer U3, wherein a 5 pin of the transformer T2 is electrically connected with a 5 pin of the power chip U4 sequentially through a diode Z1 and a diode D4, a 4 pin of the transformer T2 is electrically connected with a 5 pin of the power chip U4, a 10 pin of the transformer T2 is electrically connected with a 3 pin of the voltage stabilizer U2 through a diode D3, and a 7 pin of the transformer T2 is electrically connected with a 3 pin of the voltage stabilizer U3 through a diode D6;
the proximity switch signal isolation sampling circuit comprises a photoelectric coupler E8 and a proximity switch J1, wherein a 3 pin of the photoelectric coupler E8 is grounded through a resistor R51, a 2 pin of the photoelectric coupler E8 is electrically connected with a 2 pin of the proximity switch J1 through a resistor R50 and a resistor R48 in sequence, a 1 pin of the photoelectric coupler E8 is electrically connected with a common end of the resistor R50 and the resistor R48, and a 2 pin of the photoelectric coupler E8 is also grounded;
the detection signal isolation output circuit comprises a photoelectric coupler E9 and a triode Q5, wherein the 3 pin of the photoelectric coupler E9 is grounded through a resistor R56, the 2 pin of the photoelectric coupler E9 is electrically connected with the emitter of the triode Q5, the collector of the triode Q5 is connected with a power supply through a resistor R54, and the base of the triode Q5 is electrically connected with the 3 pin of the photoelectric coupler E8 through a resistor R52.
As a further preferable technical solution of the above technical solution, pin 1 of the transformer T2 is grounded through a diode D5, a resistor R12 and a capacitor C31 in sequence, pin 3 of the power chip U4 is grounded through a capacitor C30, and pin 4 of the power chip U4 is electrically connected to pin 4 of the photocoupler U5.
As a further preferable technical solution of the above technical solution, the pin 9 of the transformer T2 is electrically connected to the pin 2 of the voltage regulator U2, the capacitor C13 and the capacitor C14 are connected in parallel between the pin 3 of the voltage regulator U2 and the ground, and the capacitor E1 and the capacitor C15 are connected in parallel between the pin 1 of the voltage regulator U2 and the ground.
As a further preferable technical solution of the above technical solution, a capacitor C19 and a capacitor C20 are connected in parallel between the cathode of the diode D6 and the ground, and the 6 pin of the transformer T2 is grounded, the 3 pin of the voltage regulator U3 is electrically connected to the 1 pin of the photo-coupler U5 through a resistor R26, and the 3 pin of the voltage regulator U3 is electrically connected to the 2 pin of the photo-coupler U5 through a resistor R27.
As a more preferable technical solution of the above technical solution, a capacitor C26 and a capacitor C21 are connected in parallel between the 2 pin of the voltage regulator U3 and the ground, and the 2 pin of the photocoupler U5 is further electrically connected to the 3 pin of the voltage regulator U3 through a resistor R28, a capacitor C28 and a resistor R25 in this order.
Drawings
Fig. 1 is a circuit diagram of a power supply adjusting circuit with a detection circuit for automatically detecting the state of a transformer.
Fig. 2 is a circuit diagram of the proximity switch signal isolation sampling circuit of the detection circuit with the automatic detection mutual inductor state.
Fig. 3 is a detection signal isolation output circuit diagram of the detection circuit with the automatic detection mutual inductor status.
Detailed Description
The following description is presented to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, variations, modifications, equivalents and other technical solutions without departing from the spirit and scope of the invention.
The utility model discloses a detection circuitry who possesses automatic detection mutual-inductor state combines preferred embodiment below, further describes utility model's concrete embodiment.
Referring to fig. 1 of the drawings, fig. 1 is a power supply regulating circuit diagram of a detection circuit with an automatic detection mutual inductor state of the utility model, fig. 2 is a proximity switch signal isolation sampling circuit diagram of a detection circuit with an automatic detection mutual inductor state of the utility model, fig. 3 is a detection signal isolation output circuit diagram of a detection circuit with an automatic detection mutual inductor state of the utility model.
In the embodiments of the present invention, those skilled in the art will note that the resistors, capacitors, and the like according to the present invention can be regarded as the prior art.
Preferred embodiments.
The utility model discloses a detection circuit with automatic detection mutual-inductor state for the detection to external mutual-inductor, including power supply regulating circuit, proximity switch signal isolation sampling circuit and detection signal isolation output circuit, power supply regulating circuit respectively with proximity switch signal isolation sampling circuit with detection signal isolation output circuit electric connection;
the power supply regulating circuit comprises a transformer T2, a power chip U4, a voltage stabilizer U2 and a voltage stabilizer U3, wherein a 5 pin of the transformer T2 is electrically connected with a 5 pin of the power chip U4 sequentially through a diode Z1 and a diode D4, a 4 pin of the transformer T2 is electrically connected with a 5 pin of the power chip U4, a 10 pin of the transformer T2 is electrically connected with a 3 pin of the voltage stabilizer U2 through a diode D3, and a 7 pin of the transformer T2 is electrically connected with a 3 pin of the voltage stabilizer U3 through a diode D6;
the proximity switch signal isolation sampling circuit comprises a photoelectric coupler E8 and a proximity switch J1, wherein a 3 pin of the photoelectric coupler E8 is grounded through a resistor R51, a 2 pin of the photoelectric coupler E8 is electrically connected with a 2 pin of the proximity switch J1 through a resistor R50 and a resistor R48 in sequence, a 1 pin of the photoelectric coupler E8 is electrically connected with a common end of the resistor R50 and the resistor R48, and a 2 pin of the photoelectric coupler E8 is also grounded;
the detection signal isolation output circuit comprises a photoelectric coupler E9 and a triode Q5, wherein the 3 pin of the photoelectric coupler E9 is grounded through a resistor R56, the 2 pin of the photoelectric coupler E9 is electrically connected with the emitter of the triode Q5, the collector of the triode Q5 is connected with a power supply through a resistor R54, and the base of the triode Q5 is electrically connected with the 3 pin of the photoelectric coupler E8 through a resistor R52.
Specifically, the 1 pin of the transformer T2 is grounded through a diode D5, a resistor R12 and a capacitor C31 in sequence, the 3 pin of the power chip U4 is grounded through a capacitor C30, and the 4 pin of the power chip U4 is electrically connected with the 4 pin of the photocoupler U5.
More specifically, the pin 9 of the transformer T2 is electrically connected to the pin 2 of the regulator U2, the capacitor C13 and the capacitor C14 are connected in parallel between the pin 3 of the regulator U2 and the ground, and the capacitor E1 and the capacitor C15 are connected in parallel between the pin 1 of the regulator U2 and the ground.
Further, a capacitor C19 and a capacitor C20 are connected between the cathode of the diode D6 and the ground in parallel, and the 6 pin of the transformer T2 is grounded, the 3 pin of the voltage regulator U3 is electrically connected to the 1 pin of the photocoupler U5 through a resistor R26, and the 3 pin of the voltage regulator U3 is electrically connected to the 2 pin of the photocoupler U5 through a resistor R27.
Furthermore, a capacitor C26 and a capacitor C21 are connected between the pin 2 of the voltage regulator U3 and ground, and the pin 2 of the photocoupler U5 is electrically connected to the pin 3 of the voltage regulator U3 through a resistor R28, a capacitor C28 and a resistor R25 in sequence.
Preferably, the utility model discloses mainly keep apart module circuit such as sampling circuit, detection signal isolation output circuit by power supply adjusting circuit, proximity switch signal and constitute. The power supply regulating circuit realizes multi-path electrically isolated power supply output management through an input AC power supply and provides a corresponding power supply for the isolated sampling and isolated output circuit; the proximity switch signal isolation sampling circuit adopts an optical coupling isolation sampling mode to realize isolation sampling of the proximity switch signal, improves the sampling safety under the condition of ensuring that the signal can be correctly sampled, and prevents the detection circuit from being damaged when the mutual inductor leaks electricity; the detection signal isolation output circuit adopts an optical coupling isolation output mode, realizes electrical isolation output of detection signals, improves the use safety of external equipment, realizes high-low voltage isolation, and prevents high voltage from damaging the external equipment while realizing identification output of detection signals of a primary side installation state of the mutual inductor.
The proximity switch signal isolation sampling circuit triggers the on-off of a light emitting tube of the optical coupler through the on-off states of the proximity switch J1, so that the on-off of the output end of the optical coupler is promoted, and the function of sampling the proximity switch signal is realized; the triode is driven to amplify through two states of the optical coupler output signal, the processed signal drives the luminotron of the optical coupler of the detection signal isolation output circuit again, isolation output of the detection signal is achieved, and detection of the installation state of the mutual inductor is achieved as long as the external equipment isolates the voltage of the output circuit through the detection signal.
It is worth mentioning that the technical features such as the resistor and the capacitor related to the present invention should be regarded as the prior art, and the specific structure, the operation principle of these technical features and the control mode and the space arrangement mode that may be related to adopt the conventional selection in the field, and should not be regarded as the invention point of the present invention, and the present invention does not further specifically expand the detailed description.
It will be apparent to those skilled in the art that modifications and variations can be made in the above-described embodiments, or some features of the invention may be substituted or omitted, and any modification, substitution, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. A detection circuit capable of automatically detecting the state of a mutual inductor is used for detecting an external mutual inductor and is characterized by comprising a power supply regulating circuit, a proximity switch signal isolation sampling circuit and a detection signal isolation output circuit, wherein the power supply regulating circuit is electrically connected with the proximity switch signal isolation sampling circuit and the detection signal isolation output circuit respectively;
the power supply regulating circuit comprises a transformer T2, a power chip U4, a voltage stabilizer U2 and a voltage stabilizer U3, wherein a 5 pin of the transformer T2 is electrically connected with a 5 pin of the power chip U4 sequentially through a diode Z1 and a diode D4, a 4 pin of the transformer T2 is electrically connected with a 5 pin of the power chip U4, a 10 pin of the transformer T2 is electrically connected with a 3 pin of the voltage stabilizer U2 through a diode D3, and a 7 pin of the transformer T2 is electrically connected with a 3 pin of the voltage stabilizer U3 through a diode D6;
the proximity switch signal isolation sampling circuit comprises a photoelectric coupler E8 and a proximity switch J1, wherein a 3 pin of the photoelectric coupler E8 is grounded through a resistor R51, a 2 pin of the photoelectric coupler E8 is electrically connected with a 2 pin of the proximity switch J1 through a resistor R50 and a resistor R48 in sequence, a 1 pin of the photoelectric coupler E8 is electrically connected with a common end of the resistor R50 and the resistor R48, and a 2 pin of the photoelectric coupler E8 is also grounded;
the detection signal isolation output circuit comprises a photoelectric coupler E9 and a triode Q5, wherein the 3 pin of the photoelectric coupler E9 is grounded through a resistor R56, the 2 pin of the photoelectric coupler E9 is electrically connected with the emitter of the triode Q5, the collector of the triode Q5 is connected with a power supply through a resistor R54, and the base of the triode Q5 is electrically connected with the 3 pin of the photoelectric coupler E8 through a resistor R52.
2. The circuit for automatically detecting the state of the transformer according to claim 1, wherein pin 1 of the transformer T2 is grounded through a diode D5, a resistor R12 and a capacitor C31 in sequence, pin 3 of the power chip U4 is grounded through a capacitor C30, and pin 4 of the power chip U4 is electrically connected with pin 4 of a photocoupler U5.
3. The circuit of claim 2, wherein the pin 9 of the transformer T2 is electrically connected to the pin 2 of the regulator U2, the capacitor C13 and the capacitor C14 are connected in parallel between the pin 3 of the regulator U2 and ground, and the capacitor E1 and the capacitor C15 are connected in parallel between the pin 1 of the regulator U2 and ground.
4. The circuit of claim 3, wherein a capacitor C19 and a capacitor C20 are connected between the cathode of the diode D6 and ground, and the 6 pin of the transformer T2 is grounded, the 3 pin of the voltage regulator U3 is electrically connected to the 1 pin of the photocoupler U5 through a resistor R26, and the 3 pin of the voltage regulator U3 is electrically connected to the 2 pin of the photocoupler U5 through a resistor R27.
5. The circuit of claim 4, wherein a capacitor C26 and a capacitor C21 are connected in parallel between the pin 2 of the voltage stabilizer U3 and ground, and the pin 2 of the photocoupler U5 is further electrically connected to the pin 3 of the voltage stabilizer U3 through a resistor R28, a capacitor C28 and a resistor R25 in sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883836.1U CN212483831U (en) | 2020-05-22 | 2020-05-22 | Detection circuit capable of automatically detecting state of mutual inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020883836.1U CN212483831U (en) | 2020-05-22 | 2020-05-22 | Detection circuit capable of automatically detecting state of mutual inductor |
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| Publication Number | Publication Date |
|---|---|
| CN212483831U true CN212483831U (en) | 2021-02-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020883836.1U Active CN212483831U (en) | 2020-05-22 | 2020-05-22 | Detection circuit capable of automatically detecting state of mutual inductor |
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| Country | Link |
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| CN (1) | CN212483831U (en) |
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- 2020-05-22 CN CN202020883836.1U patent/CN212483831U/en active Active
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Address after: 314000 building 13, 1369 Chengnan Road, Jiaxing Economic and Technological Development Zone, Zhejiang Province Patentee after: Zhejiang Donghong Electronics Co.,Ltd. Address before: 314000 building 13, 1369 Chengnan Road, Jiaxing Economic and Technological Development Zone, Zhejiang Province Patentee before: ZHEJIANG EASTRON ELECTRONIC CO.,LTD. |
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