CN213024048U

CN213024048U - PLC intelligent distribution box

Info

Publication number: CN213024048U
Application number: CN202022546804.5U
Authority: CN
Inventors: 颉晓强
Original assignee: Xi'an Tianchang Electrical Equipment Co ltd
Current assignee: Xi'an Tianchang Electrical Equipment Co ltd
Priority date: 2020-11-06
Filing date: 2020-11-06
Publication date: 2021-04-20
Anticipated expiration: 2030-11-06

Abstract

The utility model discloses a PLC intelligent distribution box, which comprises a LED display screen distribution box and a PLC controller arranged in the distribution box, wherein a sensor detection loop for detecting the operation state and the working environment of the distribution box is also arranged in the distribution box, and a strong current output loop for controlling the LED display screen is realized; the PLC is provided with a communication interface which is communicated with an external upper computer and is used for realizing remote control of the distribution box; the PLC is respectively connected with the sensor detection circuit, the strong current output circuit and an external upper computer; the effect is as follows: the working state and the working environment of the distribution box are monitored in real time through the sensor detection loop, and then the PLC is communicated with the upper computer through a communication interface, so that an operator does not need to arrive at the site, and the remote control and monitoring of the distribution box can be realized.

Description

PLC intelligent distribution box

Technical Field

The utility model belongs to the technical field of the block terminal, concretely relates to PLC intelligent power distribution box.

Background

The LED display screen is more and more widely used at present, and the high-power LED display screen is visible everywhere. In the traditional LED display screen distribution box, an operator needs to go to the site of the distribution box and start/stop the distribution box through a button or a breaker handle, so that the traditional LED display screen distribution box is inconvenient and easy to generate electric arcs and threatens the personal safety of the operator; meanwhile, the running state and the working environment of the distribution box cannot be detected in the running process of the distribution box, and potential safety hazards such as tapping points, high temperature, fire disasters and the like are easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to solve the problem, the utility model aims at providing an operating personnel need not to go the scene, realizes the PLC intelligent power distribution box of remote control and the monitoring of block terminal.

The utility model provides a following technical scheme: a PLC intelligent distribution box comprises an LED display screen distribution box and a PLC controller arranged in the distribution box, wherein a sensor detection loop for detecting the operation state and the working environment of the distribution box and a strong current output loop for controlling an LED display screen are also arranged in the distribution box;

the PLC is provided with a communication interface which is communicated with an external upper computer and is used for realizing remote control of the distribution box;

and the PLC is respectively connected with the sensor detection circuit, the strong current output circuit and an external upper computer.

Preferably, the communication interface comprises an RS485 interface and a TCP/IP interface.

Preferably, the sensor detection loop comprises an infrared sensor detection loop, a smoke sensor detection loop, a temperature and humidity sensor detection loop and a digital current voltmeter detection loop, and each detection loop is connected with the PLC in an RS485 mode.

Preferably, the PLC controller is further connected with a PLC extension module, and the PLC extension module comprises an IO extension module and a communication extension module.

Preferably, the strong current output circuit comprises a plurality of output branches arranged in parallel; each output branch comprises an intermediate relay, a contactor and an indicator light;

one end of the intermediate relay coil power supply is connected with the output end of the PLC, the other end of the intermediate relay coil power supply is connected with the COM end of the PLC, one end of a normally open contact of the intermediate relay is connected with a power L line through a fuse, the other end of the normally open contact of the intermediate relay is connected with one end of the contactor coil power supply, the other end of the contactor coil power supply is connected with a power N line, and the indicator lamp is connected with the contactor in parallel.

Preferably, the PLC controller is further connected to an input circuit, and the input circuit includes a transfer switch and a plurality of input branches; and one end of each input branch of the input switch is connected with the DC +24V port, and the other end of each input branch of the input switch is connected with the corresponding input end of the PLC.

Preferably, the PLC controller is further connected to a heat dissipation device, and the heat dissipation device is a heat dissipation fan.

By adopting the technical scheme, the method has the following advantages: the utility model provides a pair of PLC intelligent power distribution box through the operating condition and the operational environment of sensor detection return circuit real-time supervision block terminal, and communication interface and host computer that rethread PLC controller has communicate for operating personnel need not to the scene, can realize the remote control and the monitoring of block terminal.

Drawings

Fig. 1 is a schematic structural diagram of a PLC intelligent distribution box according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a sensor detection circuit according to an embodiment of the present invention;

fig. 3a is a schematic structural diagram of a part of an output branch according to an embodiment of the present invention;

fig. 3b is a schematic structural diagram of another part of an output branch according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of an input branch according to an embodiment of the present invention.

Detailed Description

To make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following detailed description will be made with reference to the accompanying drawings and specific embodiments, and the description herein does not mean that all the subject matters corresponding to the specific examples set forth in the embodiments are cited in the claims.

Referring to fig. 1 to 4, a PLC intelligent distribution box includes an LED display screen distribution box and a PLC controller disposed in the distribution box, and the distribution box is further provided therein with a sensor detection loop for detecting an operation state and a working environment of the distribution box, and a strong current output loop for controlling the LED display screen;

It should be noted that the present embodiment is a distribution box for controlling various LED display screens;

the PLC controller can adopt Siemens S7-1200 series, and the communication interface comprises an RS485 interface and a TCP/IP interface (namely an Ethernet interface); the sensor detection loop comprises an infrared sensor detection loop, a smoke sensor detection loop, a temperature and humidity sensor detection loop and a digital current voltmeter detection loop, each detection loop is connected with the PLC in an RS485 mode, namely, signals detected by the temperature and humidity sensor, the smoke sensor, the digital current voltmeter and the like are collected through an RS485 bus and sent to the PLC in a communication mode, the PLC processes the signals uploaded by each sensor and uploads the processed signals to an upper computer or a central control center, the signals are displayed to an operator through a visual interface, and the remote operation of the distribution box and the monitoring of the operation state of the distribution box by related personnel are facilitated;

in other embodiments, the PLC controller may further be in communication connection with an external upper computer through a wireless communication module, for example, a WIFI module, a 4G module, or the like.

Furthermore, in order to meet the power supply control requirements of the LED display screens with different powers, the strong current output circuit comprises a plurality of output branches which are connected in parallel; each output branch comprises an intermediate relay, a contactor and an indicator light;

one end of the intermediate relay coil power supply is connected with the output end of the PLC, the other end of the intermediate relay coil power supply is connected with the COM end of the PLC, one end of a normally open contact of the intermediate relay is connected with a power supply L line through a fuse, the other end of the normally open contact of the intermediate relay is connected with one end of the contactor coil power supply, the other end of the contactor coil power supply is connected with a power supply N line, and the indicator lamp is connected with the contactor in parallel;

the purpose of controlling strong current by weak current is achieved through the connecting structure, and the power supply requirements of the LED display screens with different powers are met by using contactors with different models; for example, the KM1 contactor indicates panel 1 group activation, and HG1 indicates panel 1 group operation indication.

It should be noted that fig. 3b only shows a schematic connection diagram of a part of the output branches, and the structures of other output branches are the same as those of the output branches, which is not described herein again.

Above-mentioned technical scheme surveys the operating condition and the operational environment of return circuit real-time supervision block terminal through the sensor, and the communication interface that the rethread PLC controller has communicates with the host computer for operating personnel need not to the scene, can realize the remote control and the monitoring of block terminal.

Further, the PLC controller is also connected with a PLC expansion module, and the PLC expansion module comprises an IO expansion module and a communication expansion module; like this when input or output point are not enough or when need increase other sensors or communication interface, accessible PLC expansion module satisfies above-mentioned requirement, thereby increases the utility model discloses a expansibility and intelligent.

Further, referring to fig. 4, the PLC controller is further connected with an input circuit, where the input circuit includes a transfer switch and a plurality of input branches; and one end of each input branch of the input switch is connected with the DC +24V port, and the other end of each input branch of the input switch is connected with the corresponding input end of the PLC.

Specifically, the structures of the input branches are the same, and the switch SA0 is used for manual or automatic switching, which should be well known to those skilled in the art and will not be described herein again, and the specific structures refer to the drawings in the specification.

Furthermore, in order to ensure the reliability and safety in the practical process, the PLC is also connected with a heat dissipation device which is a heat dissipation fan.

Finally, it should be noted that the above description is a preferred embodiment of the present invention, and those skilled in the art can make various similar representations without departing from the spirit and scope of the present invention.

Claims

1. A PLC intelligent distribution box comprises an LED display screen distribution box and a PLC controller arranged in the distribution box, and is characterized in that a sensor detection loop used for detecting the operation state and the working environment of the distribution box and a strong current output loop used for realizing the control of an LED display screen are also arranged in the distribution box;

2. The PLC intelligent distribution box of claim 1, wherein the communication interface comprises an RS485 interface and a TCP/IP interface.

3. The PLC intelligent distribution box of claim 2, wherein the sensor detection loop comprises an infrared sensor detection loop, a smoke sensor detection loop, a temperature and humidity sensor detection loop and a digital current voltmeter detection loop, and each detection loop is connected with the PLC controller in an RS485 manner.

4. The PLC intelligent distribution box of claim 1, wherein the PLC controller is further connected with a PLC expansion module, and the PLC expansion module comprises an IO expansion module and a communication expansion module.

5. The PLC intelligent distribution box of claim 1, wherein the high power output circuit comprises a plurality of output branches arranged in parallel; each output branch comprises an intermediate relay, a contactor and an indicator light;

6. The PLC intelligent distribution box of any one of claims 1 to 5, wherein an input loop is further connected to the PLC controller, and the input loop comprises a change-over switch and a plurality of input branches; and one end of each input branch of the input switch is connected with the DC +24V port, and the other end of each input branch of the input switch is connected with the corresponding input end of the PLC.

7. The PLC intelligent distribution box of claim 6, wherein the PLC controller is further connected with a heat dissipation device, and the heat dissipation device is a heat dissipation fan.