CN211179995U

CN211179995U - Current signal detection conversion hardware device

Info

Publication number: CN211179995U
Application number: CN201922138293.0U
Authority: CN
Inventors: 樊爱东; 贾晓龙
Original assignee: Tangshan Dongtang Electric Co ltd
Current assignee: Tangshan Dongtang Electric Co ltd
Priority date: 2019-12-03
Filing date: 2019-12-03
Publication date: 2020-08-04
Anticipated expiration: 2029-12-03

Abstract

The utility model provides a current signal detects conversion hardware device, include: the mainboard is arranged in the shell, and is provided with a CPU processor, a current detection chip and a communication chip; the current analog signal is subjected to signal isolation and amplification by a current detection chip and then transmitted to a CPU (central processing unit); the CPU processor converts the signals into RS485 digital signals, and the converted signals are output through the communication chip.

Description

Current signal detection conversion hardware device

Technical Field

The utility model relates to a signal conversion technology field, in particular to current signal detects conversion hardware device.

Background

The electric isolation is to isolate the power supply and the circuit, i.e. to isolate the branch circuit of the power consumption from the whole electric system, so that the branch circuit becomes an independent non-earth safety system which is electrically isolated, thereby preventing the danger of indirect electric shock under the condition that the exposed conductor is electrified due to failure.

The industrial production needs to amplify, convert and isolate the current signals, and requires that the measurable current signals be converted into digital signals, electrically isolated and remotely transmitted.

Disclosure of Invention

An object of the utility model is to provide a current signal detects conversion hardware device to measurable quantity current signal, converts the digital signal into, carries out electrical isolation, carries out remote transmission.

In order to achieve the above object, the utility model provides a current signal detects conversion hardware device adopts following technical scheme: a hardware device for detecting and converting current signals comprises a mainboard arranged in a shell, wherein a CPU (central processing unit) processor, a current detection chip and a communication chip are arranged on the mainboard, the current detection chip is electrically connected with the CPU processor, and the CPU processor is electrically connected with the communication chip; the current analog signal is subjected to signal isolation and amplification by a current detection chip and then transmitted to a CPU (central processing unit); the CPU processor converts the signals into RS485 digital signals, and the converted signals are output through the communication chip.

The main board is further provided with an input end, the input end is a double port and is welded on the main board through a first wiring terminal seat, a first wiring terminal is plugged on the first wiring terminal seat, and an upper left pole of the first wiring terminal seat is electrically connected with a current detection chip on the main board.

Further still be provided with the output on the mainboard, the output is single port and welds on the mainboard by wiring terminal seat two, and wiring terminal seat two is pegged graft on wiring terminal seat two, and communication chip output pin electric connection wiring terminal seat two.

Further still be provided with on the mainboard with CPU treater electrical property continuous power indicator, operation pilot lamp, operation button.

Further still be provided with power module on the mainboard, CUP treater, current detection chip, communication chip electric connection power module, power module is CUP treater, current detection chip, communication chip power supply.

And a further operation key controls the CPU processor to be powered on to operate, and the CPU processor drives the operation indicator lamp to light up during operation.

The utility model has the beneficial effects that the utility model provides a present current signal detect, can carry out signal isolation, transmission to the CPU treater after enlargiing to the electric current analog signal via the current detection chip, convert 485 digital signal into, through the signal output after communication chip will convert, pass to the host computer in the master control room through communication cable teletransmission, realize the data teletransmission.

Drawings

FIG. 1 is a block diagram of an embodiment of the present invention;

FIG. 2 is a schematic diagram of an embodiment of the present invention;

FIG. 3 is a diagram of a circuit pin of a CPU processor according to an embodiment of the present invention;

FIG. 4 is a circuit pin diagram of a current detection chip according to an embodiment of the present invention;

FIG. 5 is a pin diagram of a power circuit according to an embodiment of the present invention;

FIG. 6 is a circuit pin diagram of a communication chip according to an embodiment of the present invention;

fig. 7 is a schematic diagram of the overall circuit connection according to the embodiment of the present invention.

In the figure: 1 connecting terminal head I, 101 connecting terminal head I upper left extreme, 102 connecting terminal head I upper right extreme, 2 power indicator, 3 operation indicator, 4 operation buttons, 5 shells, 6 connecting terminal seat I, 601 connecting terminal seat I upper left extreme, 602 connecting terminal seat I upper right extreme, 7 mainboards, 701 power module, 702 CPU processor, 703 current detection chip, 704 communication chip, 8 connecting terminal seat II, 9 connecting terminal head II.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

Example 1

The types of the electric elements used in the embodiment are as follows, CPU STC8A8K64S4A 12-L QFP44, current detection chips ACS712-5 and SOIC-8, communication chips MAX485 and SOIC-8, power supply modules PB5N-2025(5V/3W), circuit pin diagrams thereof are shown in figures 3-6, and circuit pin connections thereof are shown in figure 7.

The utility model provides a current signal detects conversion hardware device, as shown in fig. 1, mainboard 7 is installed in shell 5, and power indicator 2, operation pilot lamp 3, operation button 4, a binding post seat 6, two 8 of binding post seat weld on mainboard 7, and binding post head 1 is pegged graft on binding post seat 6, and binding post head two is pegged graft on binding post seat two.

The mainboard is also provided with a power module 701, the CUP processor 702, the current detection chip 703 and the communication chip 704 are electrically connected with the power module 701, and the power module supplies power for the CUP processor, the current detection chip and the communication chip. The current detection chip is electrically connected with the CPU, and the CPU is electrically connected with the communication chip; the current analog signal is subjected to signal isolation and amplification by a current detection chip and then transmitted to a CPU (central processing unit); the CPU processor converts the signals into RS485 digital signals, and the converted signals are output through the communication chip.

The device is used for detecting current analog signals in the circuit and converting the current analog signals into RS485 digital signals, and is electrically isolated, so that remote data transmission is realized.

The working principle is as follows: the current signal detection and conversion structure is connected with an external power supply through an upper right pole 102 of a wiring terminal head and an upper right pole 602 of a wiring terminal seat, the upper right pole 602 of the wiring terminal seat is connected with a power supply module 701 on the mainboard 7, the power supply module 701 is powered on at the moment, the CUP processor 702, the current detection chip 703 and the communication chip 704 are electrically connected with the power supply module 701, and the power supply module supplies power for the CUP processor, the current detection chip and the communication chip. The CUP processor is powered on and detects a power supply signal, and a power supply indicator lamp 2 connected with the CPU processor is driven to light; pressing an operation key 4 connected with the CPU processor, starting the CPU processor to work, and simultaneously lightening an operation indicator lamp 2 connected with the CPU processor;

then, an external current analog signal is accessed by an upper left pole 101 of a first connecting terminal and an upper left pole 601 of a first connecting terminal seat which are connected with each other, the upper left pole 601 of the first connecting terminal seat is electrically connected with a current detection chip 703 on the mainboard 7, and at the moment, the current detection chip 703 detects the current analog signal, and the current analog signal is subjected to signal isolation and amplification by the current detection chip 703 and then is transmitted to a CPU (central processing unit) 702 connected with the current detection chip 703; the CPU processor 702 performs data operation processing, converts the data into 485 digital signals, and outputs the converted signals through the communication chip 704 connected to the CPU processor 702.

Claims

1. A current signal detection and conversion hardware device comprises a main board (7) arranged in a shell (5), and is characterized in that a CPU (central processing unit) processor (702), a current detection chip (703) and a communication chip (704) are arranged on the main board (7), the current detection chip is electrically connected with the CPU processor, and the CPU processor is electrically connected with the communication chip; the current analog signal is subjected to signal isolation and amplification by a current detection chip and then transmitted to a CPU (central processing unit); the CPU processor converts the signals into RS485 digital signals, and the converted signals are output through the communication chip.

2. A current signal detecting and converting hardware device according to claim 1, wherein said main board further has an input end, said input end is dual-port and is soldered on the main board by a first connection terminal block (6), said first connection terminal block (1) is plugged on said first connection terminal block, and an upper left pole (601) of said first connection terminal block is electrically connected to the current detecting chip on the main board.

3. The hardware device as claimed in claim 1, wherein the motherboard further comprises an output port, the output port is a single port and is soldered to the motherboard by a second connection terminal block (8), the second connection terminal block (9) is plugged into the second connection terminal block, and the output pin of the communication chip is electrically connected to the second connection terminal block.

4. The current signal detecting and converting hardware device according to claim 1, wherein the main board further comprises a power indicator (2), an operation indicator (3), and an operation button (4) electrically connected to the CPU processor.

5. The current signal detecting and converting hardware device according to claim 1, wherein the motherboard further comprises a power module (701), the CPU processor (702), the current detecting chip (703) and the communication chip (704) are electrically connected to the power module (701), and the power module supplies power to the CPU processor, the current detecting chip and the communication chip.

6. The hardware device for detecting and converting current signal as claimed in claim 1, wherein the run button (4) controls the CPU processor (702) to turn on the power supply for running, and the CPU processor (702) drives the run indicator lamp (3) to light up during running.