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Monitor device for voltage input and current output

A monitoring device and voltage input technology, applied in the direction of measuring devices, measuring electrical variables, instruments, etc., can solve problems such as low signal-to-noise ratio of output signals, internal device damage, hidden dangers in the use of terminal products, etc., to improve operational flexibility, The effect of improving accuracy

Inactive Publication Date: 2012-08-22
北京云海智慧科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These tiny signals are easily affected by the external environment (such as electromagnetic field, temperature, etc.) during use, resulting in damage to internal devices or a low signal-to-noise ratio of the output signal, which brings huge hidden dangers to the application of end products

Method used

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  • Monitor device for voltage input and current output
  • Monitor device for voltage input and current output
  • Monitor device for voltage input and current output

Examples

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Embodiment Construction

[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0033] see figure 1 As shown, the monitoring device for voltage input and current output of the present invention is installed on the use terminal and can output 0-5V analog signal V 电压 between the devices. The monitoring device can protect the terminal from being damaged due to the current exceeding the applicable range.

[0034] see Figure 1A As shown, the monitoring device for voltage input and current output of the present invention includes a casing and a circuit board installed in the casing. There are voltage interface J3, current interface J2 and alarm interface J6 on the upper panel of the housing, a power interface J1 is provided on the right panel of the housing, and an LCD display and a keyboard (on the keyboard) are provided on the front panel of the housing. There are 0-9 numbers, and commonly used keys such as OK, Cancel, etc.). The LCD d...

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Abstract

The invention discloses a monitor device for voltage input and current output, comprising a shell and a circuit board arranged in the shell; the upper faceplate of the shell is provided with a voltage port (J3), a current port (J2) and an alarming port (J6), the right faceplate of the shell is provided with a power port (J1), the front faceplate of the shell is provided with an LCD display screen and a keyboard; the circuit board comprises a central processing unit, an analog-digital conversion module, a digital-analog conversion module, an alarming output module, the keyboard and an alarming output module. The monitor device carries out differential demodulation on the received digital voltage signal Vin in the central processing unit to obtain a twelve digit binary numeral working voltage Vout; on the one hand, the working voltage Vout is used as an input voltage of current conversion, on the other hand, the working voltage Vout is compared with the voltage threshold Pin to obtain an alarming voltage, thus realizing the pre-alarming and protecting actions towards the damage caused by overcurrent at the use terminal.

Description

technical field [0001] The invention relates to a device for protecting the application current of the end product. More specifically, it refers to an input voltage V 电压 is converted into a current I 电流 output, and the output current I that does not meet the conditions 电流 A monitoring device that issues an alarm. Background technique [0002] For end products, using a power supply device with stable performance can fully protect its service life. The terminals used can be portable devices (such as mobile phones, PDAS, GPRS, game consoles), telecommunications / network equipment (such as routers, servers, VOIP systems), consumer electronics, medical systems, navigation systems, etc. Most of these industrial equipment are based on 0-5V voltage, and the circuit contains a large number of 4-20mA current signals. These tiny signals are easily affected by the external environment (such as electromagnetic field, temperature, etc.) during use, resulting in damage to internal devi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R15/00
Inventor 龙剑
Owner 北京云海智慧科技有限公司
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