CN215264422U

CN215264422U - Switch

Info

Publication number: CN215264422U
Application number: CN202120553413.8U
Authority: CN
Inventors: 廖立勋
Original assignee: Foshan Pioneer Technology Co ltd
Current assignee: Foshan Pioneer Technology Co ltd
Priority date: 2021-03-17
Filing date: 2021-03-17
Publication date: 2021-12-21
Anticipated expiration: 2031-03-17

Abstract

The utility model relates to the field of communication equipment, and discloses a switch, which comprises a single chip microcomputer, a storage module, a state indication module, a POE module, an interface module, a data exchange module, a camera module and a power supply module, wherein the single chip microcomputer is respectively connected with the storage module, the state indication module, the POE module, the data exchange module and the power supply module; the power supply module comprises a power supply source, a first capacitor, a first resistor, a second capacitor, a first triode, a second resistor, a second triode, a second diode, a first voltage-regulator tube, a third potentiometer, a fourth resistor, a third triode, a third capacitor and a voltage output end, and the power supply source is connected with one end of the first capacitor, one end of the first resistor and a collector electrode of the first triode respectively. The utility model discloses circuit structure is comparatively simple, the cost is lower, the security and the reliability of convenient maintenance, circuit are higher.

Description

Switch

Technical Field

The utility model relates to a communications facilities field, in particular to switch.

Background

A switch is a network device used for forwarding electrical signals. It may provide an exclusive electrical signal path for any two network nodes accessing the switch. The most common switch is an ethernet switch. Other common are telephone voice switches, fiber switches, and the like. Fig. 1 is a schematic circuit diagram of a power supply portion of a conventional switch, and it can be seen from fig. 1 that the power supply portion of the conventional switch uses many components, has a complex circuit structure, has a high hardware cost, and is inconvenient to maintain. In addition, since the power supply part of the conventional switch lacks the corresponding circuit protection function, for example: the safety and reliability of the circuit are poor due to the lack of the current-limiting protection function.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, a circuit structure is comparatively simple, the cost is lower, the security and the higher switch of reliability of convenient maintenance, circuit are provided.

The utility model provides a technical scheme that its technical problem adopted is: the method comprises the steps that a switch is constructed and comprises a single chip microcomputer, a storage module, a state indication module, a POE module, an interface module, a data exchange module, a camera module and a power supply module, wherein the single chip microcomputer is respectively connected with the storage module, the state indication module, the POE module, the data exchange module and the power supply module, the camera module is connected with the data exchange module, and the interface module is respectively connected with the POE module and the data exchange module;

the power supply module comprises a power supply source, a first capacitor, a first resistor, a second capacitor, a first triode, a second resistor, a second triode, a second diode, a first voltage regulator tube, a third potentiometer, a fourth resistor, a third triode, a third capacitor and a voltage output end, wherein the power supply source is respectively connected with one end of the first capacitor, one end of the first resistor and a collector of the first triode, a base of the first triode is respectively connected with the other end of the first resistor, one end of the second capacitor and an anode of the second diode, a cathode of the second diode is connected with a collector of the second triode, an emitter of the first triode is respectively connected with one end of the second resistor, one end of the fourth resistor, one end of the third capacitor and the voltage output end, and an emitter of the second triode is respectively connected with the other end of the second resistor, one end of the third capacitor and the voltage output end, The anode of the first voltage-regulator tube is connected with one fixed end of a third potentiometer, the sliding end of the third potentiometer is connected with the base electrode of the third triode, the base electrode of the second triode is respectively connected with the other end of the fourth resistor and the collector electrode of the third triode, and the other end of the first capacitor, the other end of the second capacitor, the cathode of the first voltage-regulator tube, the other fixed end of the third potentiometer, the emitting electrode of the third triode and the other end of the third capacitor are all grounded.

In the switch of the present invention, the second diode has a model of S-152T.

The switch in, power module still includes the fifth resistance, the one end of fifth resistance with the base of second triode is connected, the other end of fifth resistance with the collecting electrode of third triode is connected.

In the switch of the present invention, the resistance of the fifth resistor is 36k Ω.

In the switch of the present invention, the first transistor is an NPN transistor.

In the switch of the present invention, the second triode is an NPN-type triode.

In the switch of the present invention, the third transistor is an NPN transistor.

Implement the utility model discloses a switch has following beneficial effect: because be equipped with the singlechip, memory module, status indication module, the POE module, interface module, the data exchange module, camera module and power module, power module includes power supply, first electric capacity, first resistance, the second electric capacity, first triode, the second resistance, the second triode, the second diode, first stabilivolt, the third potentiometre, the fourth resistance, the third triode, third electric capacity and voltage output end, this power module compares with the power supply part of traditional switch, its components and parts that use are less, owing to saved some components and parts, can reduce the hardware cost like this, in addition, the second diode is used for carrying out the current-limiting protection, therefore circuit structure is comparatively simple, the cost is lower, convenient maintenance, the security and the reliability of circuit are higher.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 a circuit schematic of the power supply portion of a conventional switch;

fig. 2 is a schematic structural diagram of an embodiment of the switch of the present invention;

fig. 3 is a schematic circuit diagram of the power supply module in the embodiment.

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.

In the embodiment of the switch of the present invention, a schematic structural diagram of the switch is shown in fig. 1. In fig. 1, this switch includes singlechip 1, storage module 2, status indication module 3, POE module 4, interface module 5, data exchange module 6, camera module 7 and power module 8, wherein, singlechip 1 is connected with storage module 2, status indication module 3, POE module 4, data exchange module 6 and power module 8 respectively, camera module 7 is connected with data exchange module 6, interface module 5 is connected with POE module 4 and data exchange module 6 respectively.

The single chip microcomputer 1 is mainly used for working in coordination with the POE module 4 to realize the basic data exchange function. In addition, the singlechip 1 is also used for driving the camera module 7 to work.

The camera module 7 is used for shooting images of the surrounding environment, and a user can accurately judge whether the mains supply power-off condition is caused by external force damage or not based on image data shot by the camera module 7. In practical application, when the commercial power is cut off, the camera module 7 shoots an image of the surrounding environment, and a user looks at the image data to judge whether the commercial power is cut off due to external damage, for example, the commercial power is broken due to manual tearing or the commercial power is broken due to impact of foreign objects.

POE module 4 and singlechip 1 coordinated work realize basic data exchange function, and storage module 2 can save the image data that camera module 7 was shot. The unnecessary data exchange module 6 is coded into a proper data stream, and the data stream information is transmitted through communication of a line connected with the singlechip 1. The data exchange module 6 can further enrich and improve the data exchange function and capability of the switch.

The interface module 5 comprises a number of rich interfaces, such as a number of wired ethernet interfaces, an RS485 bus interface, etc. Abundant interface setting can be convenient for be connected with multiple types of external equipment to realize that external equipment constitutes the network that satisfies current application scene demand.

The status indication module 3 is used to characterize the working status of the current switch, and the working status may include normal, abnormal/faulty and stop working. In particular, the status indication module 3 may comprise status indicator lights, which characterize the different operating states of the switch by flashing different colors/frequencies. For example, a normally-on green light may be used to indicate normal operation; a flashing yellow light may be used to indicate an abnormal/faulty operating condition; the normally-on red light can be used for representing the state of stopping working and waiting.

Fig. 3 is a schematic circuit diagram of a power supply module in this embodiment, in fig. 3, the power supply module 8 includes a power supply VCC, a first capacitor C1, a first resistor R1, a second capacitor C2, a first triode Q1, a second resistor R2, a second triode Q2, a second diode D2, a first regulator D1, a third potentiometer RP3, a fourth resistor R4, a third triode Q3, a third capacitor C3 and a voltage output Vo, where the power supply VCC is respectively connected to one end of the first capacitor C1, one end of the first resistor R1 and a collector of the first triode Q1, a base of the first triode Q1 is respectively connected to the other end of the first resistor R1, one end of the second capacitor C2 and an anode of a second diode D2, a cathode of the second diode D2 is connected to a collector of the second triode Q2, an emitter of the first Q1 is respectively connected to one end of the second resistor R4 and one end of the fourth resistor R2, One end of a third capacitor C3 is connected with the voltage output end Vo, an emitter of a second triode Q2 is respectively connected with the other end of a second resistor R2, an anode of a first voltage regulator tube D1 and a fixed end of a third potentiometer RP3, a sliding end of a third potentiometer RP3 is connected with a base of a third triode Q3, a base of the second triode Q2 is respectively connected with the other end of a fourth resistor R4 and a collector of a third triode Q3, and the other end of the first capacitor C1, the other end of the second capacitor C2, a cathode of the first voltage regulator tube D1, the other fixed end of the third potentiometer RP3, an emitter of the third triode Q3 and the other end of the third capacitor C3 are all grounded.

Compared with the power supply part of the traditional switch in fig. 1, the power supply module 8 has the advantages of fewer used components, simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the second diode D2 is a current limiting diode for current limiting protection of the collector current of the second transistor Q2. The current limiting protection principle is as follows: when the collector current of the second triode Q2 is large, the second diode D2 can reduce the collector current of the second triode Q2 to keep the second triode Q2 in a normal working state, so that the device in the circuit is not burnt out due to too large current, and the safety and reliability of the circuit are high. It should be noted that in the present embodiment, the second diode D2 has a model number S-152T. Of course, in practical applications, the second diode D2 may also be another type of diode with the same function.

This power module 8 turns into output voltage with 12V power VCC between 3V to 9V to it is adjustable, it is very convenient to use, the utility model discloses simple structure, it is with low costs, job stabilization, long service life.

In this embodiment, the first transistor Q1 is an NPN transistor, the second transistor Q2 is an NPN transistor, and the third transistor Q3 is an NPN transistor. Of course, in practical applications, the first transistor Q1, the second transistor Q2, and the third transistor Q3 may also be PNP transistors, but the structure of the circuit is also changed accordingly.

In this embodiment, the power supply module 8 further includes a fifth resistor R5, one end of the fifth resistor R5 is connected to the base of the second transistor Q2, and the other end of the fifth resistor R5 is connected to the collector of the third transistor Q3. The fifth resistor R5 is a current-limiting resistor, and is used for current-limiting protection of the collector current of the third transistor Q3, so as to further enhance the safety and reliability of the circuit. It should be noted that, in the present embodiment, the resistance of the fifth resistor R5 is 36k Ω. Of course, in practical applications, the resistance of the fifth resistor R5 may be increased or decreased according to specific situations.

In a word, in this embodiment, compared with the power supply part of the conventional switch, the power supply module 8 has fewer used components, a simpler circuit structure and convenience in maintenance, and can reduce the hardware cost due to the fact that some components are saved. In addition, the power supply module 8 is provided with a current limiting diode, so that the safety and the reliability of the circuit are high.

The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A switch is characterized by comprising a single chip microcomputer, a storage module, a state indication module, a POE module, an interface module, a data exchange module, a camera module and a power supply module, wherein the single chip microcomputer is respectively connected with the storage module, the state indication module, the POE module, the data exchange module and the power supply module;

2. The switch of claim 1, wherein the second diode is of type S-152T.

3. The switch according to claim 2, wherein the power supply module further comprises a fifth resistor, one end of the fifth resistor is connected to the base of the second transistor, and the other end of the fifth resistor is connected to the collector of the third transistor.

4. A switch according to claim 3, characterised in that the fifth resistor has a value of 36k Ω.

5. The switch according to any of claims 1 to 4, wherein the first transistor is an NPN transistor.

6. The switch according to any of claims 1 to 4, wherein the second transistor is an NPN transistor.

7. The switch according to any of claims 1 to 4, wherein the third transistor is an NPN transistor.