CN214674346U - Reverse connection prevention protection alarm device for direct current power supply - Google Patents
Reverse connection prevention protection alarm device for direct current power supply Download PDFInfo
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- CN214674346U CN214674346U CN202122487600.3U CN202122487600U CN214674346U CN 214674346 U CN214674346 U CN 214674346U CN 202122487600 U CN202122487600 U CN 202122487600U CN 214674346 U CN214674346 U CN 214674346U
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Abstract
The utility model discloses a DC supply's anti-reverse connection protection alarm device, include: the shell is in a cuboid shape, the shell buckles the circuit board in an inner cavity of the shell, the input interface and the output interface are respectively positioned on two opposite side surfaces of the shell, the input interface and the output interface are respectively electrically connected to the circuit board, and an anti-reverse connection circuit is arranged on the circuit board; the utility model discloses a prevent reverse connection circuit and avoided field operation personnel because the power joins conversely the reason and causes the damage to equipment, field operation personnel in case connect reverse back can not cause the influence to the power supply of equipment, reduced the equipment damage trouble, protected the safety of equipment.
Description
Technical Field
The utility model belongs to the technical field of the monitoring, especially, relate to a DC supply prevents reverse connection protection alarm device.
Background
When monitoring is carried out on water conservancy or agricultural sites, the equipment adopts a direct current power supply system, and the power supply of the system generally adopts a mode of converting 220V alternating current into direct current or supplying power by a battery. Because the direct current power supply is distinguished by the positive and negative polarities, once the polarity of the power supply is reversely connected, the fault of equipment burnout can be directly caused, and economic loss and time loss are brought; therefore, when operating, a field worker needs to judge not only the polarity of the power output but also the interface polarity of the equipment, however, sometimes it is difficult to distinguish the polarities of the positive and negative electrodes of the dc power supply in the field if no measuring tool is available, and even sometimes even after the polarity of the positive and negative electrodes of the dc power supply is measured by using the measuring tool, the polarity of the equipment is still opposite to the polarity of the positive and negative electrodes of the dc power supply for various reasons, so that unnecessary accidents and losses occur, which is always a trouble for the direct power supply to dock with the field worker; therefore, there is a need for an anti-reverse connection device to improve field work efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model provides a DC supply's anti-reverse connection protection alarm device, include: the shell is in a cuboid shape, the shell enables the circuit board to be buckled in an inner cavity of the shell, the input interface and the output interface are respectively positioned on two opposite side surfaces of the shell, and the input interface and the output interface are respectively and electrically connected to the circuit board; the circuit board is provided with an anti-reverse connection circuit, the circuit components of the anti-reverse connection circuit comprise diodes D1-D4, a switch tube Q2 and a resistor R11, and the connection mode of the anti-reverse connection circuit is as follows: a first end VIN1 of the input interface is electrically connected to an anode of a diode D1, a cathode of a diode D1 is electrically connected to an S-pole of a switching tube Q2, a second end VIN2 of the input interface is electrically connected to an anode of a diode D2, a cathode of a diode D2 is electrically connected to an S-pole of a switching tube Q2, a cathode of a diode D3 is electrically connected to an anode of a diode D1, a cathode of a diode D4 is electrically connected to an anode of a diode D2, anodes of the diodes D3 and D4 are connected to a G-pole of a switching tube Q2 through a resistor R11, a D-pole of a switching tube Q2 is connected to an anode of the output interface, and a G-pole of a switching tube Q2 is connected to a cathode of the output interface.
Preferably, the housing 1 is further provided with an optical alarm 5, and the optical alarm 5 is electrically connected to the circuit board 2.
Preferably, the circuit component of the light alarm 5 is a light emitting diode D5, and the connection mode of the light emitting diode D5 electrically connected with the anti-reverse connection circuit is as follows: the anode of the led D5 is connected to the anode of the diode D3 through the resistor R9, and the cathode of the led D5 is connected to the cathode of the diode D1.
Preferably, the shell 1 is further provided with an acoustic alarm 6, and the acoustic alarm 6 is electrically connected to the circuit board 2.
Preferably, the circuit component of the audible alarm 6 is a buzzer H6, and the buzzer H6 is electrically connected with an anti-reverse circuit in the following connection mode: the anode of the buzzer H6 is connected to the anode of the diode D3 through the resistor R10, and the cathode of the buzzer H6 is connected to the cathode of the diode D1.
The utility model has the advantages that:
1. the utility model discloses a prevent reverse connection circuit and avoided field operation personnel because the power joins conversely the reason and causes the damage to equipment, field operation personnel in case connect reverse back can not cause the influence to the power supply of equipment, reduced the equipment damage trouble, protected the safety of equipment.
2. The utility model discloses be provided with sound, light alarm device, sound, light alarm device electricity are connected to and are prevented reverse circuit, connect the positive negative pole of DC power supply when operating personnel carelessly when reversing, and sound, light alarm device start simultaneously and report to the police, and warning operating personnel in time carries out polarity connection rectification, has saved operating time and has improved work efficiency, has reduced the probability of equipment trouble, damage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments of the present invention or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are 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 a schematic structural diagram of a reverse-connection prevention protection alarm device with direct current power supply;
fig. 2 is a circuit diagram of an anti-reverse connection circuit.
In the figure, 1, a housing; 2. a circuit board; 3. an input interface; 4. an output interface; 5. an optical alarm; 6. an audible alarm.
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 some, but not all, embodiments of the present invention. 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.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. The terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the terms "mounted," "connected," and "connected" 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 embodiments of the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1-2, the utility model relates to a dc supply prevents reverse connection protection alarm device includes: the circuit board comprises a shell 1, a circuit board 2, an input interface 3 and an output interface 4, wherein the shell 1 is cuboid, the circuit board 2 is buckled in an inner cavity of the shell 1 by the shell 1, the input interface 3 and the output interface 4 are respectively positioned on two opposite side surfaces of the shell 1, and the input interface 3 and the output interface 4 are respectively and electrically connected to the circuit board 2; the circuit board 2 is provided with an anti-reverse connection circuit, the circuit components of the anti-reverse connection circuit comprise diodes D1-D4, a switch tube Q2 and a resistor R11, and the connection mode of the anti-reverse connection circuit is as follows: a first end VIN1 of the input interface 3 is electrically connected to an anode of the diode D1, a cathode of the diode D1 is electrically connected to an S-pole of the switching tube Q2, a second end VIN2 of the input interface 3 is electrically connected to an anode of the diode D2, a cathode of the diode D2 is electrically connected to an S-pole of the switching tube Q2, a cathode of the diode D3 is electrically connected to an anode of the diode D1, a cathode of the diode D4 is electrically connected to an anode of the diode D2, anodes of the diodes D3 and D4 are connected to a G-pole of the switching tube Q2 through a resistor R11, a D-pole of the switching tube Q2 is connected to an anode of the output interface 4, and a G-pole of the switching tube Q2 is connected to a cathode of the output interface 4.
Further, an optical alarm 5 is further arranged on the shell 1, and the optical alarm 5 is electrically connected to the circuit board 2.
Furthermore, the circuit component of the optical alarm 5 is a light emitting diode D5, and the connection mode of the light emitting diode D5 electrically connected with the anti-reverse connection circuit is as follows: the anode of the led D5 is connected to the anode of the diode D3 through the resistor R9, and the cathode of the led D5 is connected to the cathode of the diode D1.
Furthermore, the shell 1 is also provided with an acoustic alarm 6, and the acoustic alarm 6 is electrically connected to the circuit board 2.
Furthermore, the circuit component of the audible alarm 6 is a buzzer H6, and the connection mode of the buzzer H6 electrically connected with the anti-reverse connection circuit is as follows: the anode of the buzzer H6 is connected to the anode of the diode D3 through the resistor R10, and the cathode of the buzzer H6 is connected to the cathode of the diode D1.
Examples
In the embodiment, the working principle of unidirectional conductivity of diodes is utilized, 4 diodes D1-D4, a light emitting diode D5, a buzzer H6 and a switch tube Q2 are used to form a circuit input nonpolar output reverse connection acousto-optic protection device, when the positive pole of a power supply is input from the positive pole of a diode D1, a diode D1 is conducted, a diode D3 is cut off, the positive pole of a load is connected with V +, the negative pole of the load is connected with V-, the G pole voltage of the switch tube Q2 is lower than the S pole, a switch tube Q2 is conducted, the current direction flows to the D pole through the S pole of the switch tube Q2, then the current flows to the negative pole of the power supply through the diode D4 after passing through the load, and the diode D3 is cut off and flows to the negative pole of the power supply. When the positive pole of the power supply is input from the positive pole of the diode D2, the diode D2 is conducted, the diode D4 is cut off, the positive pole of the load is connected with V +, the negative pole of the load is connected with V-, the G pole voltage of the switch tube Q2 is lower than the S pole, the switch tube Q2 is conducted, the current direction flows to the D pole through the S pole of the switch tube Q2, then the current flows to the power supply negative pole through the diode D3 after passing through the load, and the diode D4 is cut off and flows to the power supply negative pole.
When the positive electrode of the load is connected with V-, and the negative electrode is connected with V +, the voltage of the G electrode of the switch tube Q2 is higher than the voltage of the S electrode, and the switch tube Q2 is cut off, so that a loop cannot be formed between the positive electrode and the negative electrode of the power supply of the load, no current passes through the load end, and the power supply of the equipment is protected. At the moment, the anode voltage of the light-emitting diode D5 is greater than the cathode voltage, D5 is conducted and emits light, the anode voltage of the buzzer H6 is greater than the cathode voltage, and the buzzer H6 is conducted and emits alarm sound. At the moment, the reverse connection prevention protection alarm device can warn field operators to check the positive and negative poles of the power supply wiring.
To sum up, the utility model relates to a direct current power supply prevents reverse-connection protection alarm device has avoided the field operation personnel to cause the damage to equipment because the power reversal reason through preventing reverse-connection circuit, and the field operation personnel can not cause the influence to the power supply of equipment in case connect reverse back, has reduced equipment damage trouble, has protected the safety of equipment, consequently the utility model discloses possess extensive application prospect.
The embodiments in the present specification are described in a progressive manner, and the same or similar parts among the embodiments may be referred to each other, and each embodiment focuses on the differences from the other embodiments.
The above embodiments are only used to illustrate the technical solution of the present invention, but not to limit the present invention; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications or substitutions do not depart from the scope of the present invention.
Claims (5)
1. A reverse connection prevention protection alarm device for direct current power supply is characterized by comprising: the circuit board comprises a shell (1), a circuit board (2), an input interface (3) and an output interface (4), wherein the shell (1) is cuboid, the circuit board (2) is buckled in an inner cavity of the shell (1) by the shell (1), the input interface (3) and the output interface (4) are respectively positioned on two opposite side surfaces of the shell (1), and the input interface (3) and the output interface (4) are respectively and electrically connected to the circuit board (2);
the anti-reverse-connection circuit is arranged on the circuit board (2), circuit components of the anti-reverse-connection circuit comprise diodes D1-D4, a switch tube Q2 and a resistor R11, and the connection mode of the anti-reverse-connection circuit is as follows: the first end VIN1 of the input interface (3) is electrically connected to the anode of the diode D1, the cathode of the diode D1 is electrically connected to the S-pole of the switching tube Q2, the second end VIN2 of the input interface (3) is electrically connected to the anode of the diode D2, the cathode of the diode D2 is electrically connected to the S-pole of the switching tube Q2, the cathode of the diode D3 is electrically connected to the anode of the diode D1, the cathode of the diode D4 is electrically connected to the anode of the diode D2, the anodes of the diodes D3 and D4 are connected to the G-pole of the switching tube Q2 through the resistor R11, the D-pole of the switching tube Q2 is connected to the anode of the output interface (4), and the G-pole of the switching tube Q2 is connected to the cathode of the output interface (4).
2. A dc-powered anti-reverse-connection protection alarm device according to claim 1, wherein a light alarm (5) is further provided on the housing (1), and the light alarm (5) is electrically connected to the circuit board (2).
3. The anti-reverse-connection protection alarm device for the direct current power supply according to claim 2, wherein a circuit component of the optical alarm (5) is a light emitting diode D5, and the connection mode that the light emitting diode D5 is electrically connected with the anti-reverse-connection circuit is as follows: the anode of the led D5 is connected to the anode of the diode D3 through the resistor R9, and the cathode of the led D5 is connected to the cathode of the diode D1.
4. A dc-powered reverse-connection prevention protection alarm device according to claim 1, wherein an audible alarm (6) is further provided on the housing (1), and the audible alarm (6) is electrically connected to the circuit board (2).
5. The direct-current-powered reverse connection prevention protection alarm device according to claim 4, wherein a circuit component of the audible alarm (6) is a buzzer H6, and the buzzer H6 is electrically connected with the reverse connection prevention circuit in a manner that: the positive pole of the buzzer H6 is connected to the positive pole of the diode D3 through the resistor R10, and the negative pole of the buzzer H6 is connected to the negative pole of the diode D1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122487600.3U CN214674346U (en) | 2021-10-15 | 2021-10-15 | Reverse connection prevention protection alarm device for direct current power supply |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122487600.3U CN214674346U (en) | 2021-10-15 | 2021-10-15 | Reverse connection prevention protection alarm device for direct current power supply |
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| Publication Number | Publication Date |
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| CN214674346U true CN214674346U (en) | 2021-11-09 |
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| CN202122487600.3U Active CN214674346U (en) | 2021-10-15 | 2021-10-15 | Reverse connection prevention protection alarm device for direct current power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002612A (en) * | 2021-10-26 | 2022-02-01 | 珠海格力电器股份有限公司 | Reverse connection detection circuit and method and power supply system |
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2021
- 2021-10-15 CN CN202122487600.3U patent/CN214674346U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002612A (en) * | 2021-10-26 | 2022-02-01 | 珠海格力电器股份有限公司 | Reverse connection detection circuit and method and power supply system |
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Denomination of utility model: A DC powered anti reverse connection protection alarm device Effective date of registration: 20230615 Granted publication date: 20211109 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: XI'AN XUNTENG TECHNOLOGY Co.,Ltd. Registration number: Y2023610000448 |