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Circuit with analog-digital (AD) port collecting three analog quantity signals

An analog signal, analog signal technology, applied in the direction of analog-to-digital converter, etc., can solve the problem of not being able to collect three analog signals from one AD port, and achieve the effect of simple and reliable system

Inactive Publication Date: 2013-06-12
上海格立特电力电子有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0002] When the general-purpose inverter is controlled, it usually needs to collect multiple analog signals, but the AD analog-to-digital conversion port of the control CPU has only one channel, which cannot realize the acquisition of three analog signals by one AD port.

Method used

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  • Circuit with analog-digital (AD) port collecting three analog quantity signals

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Embodiment

[0011] like figure 1 As shown, the circuit schematic diagram of one AD port collecting three analog signals provided by the present invention, the circuit schematic diagram of one AD port collecting three analog signals is composed of U1 and U5, and the I / O port P1.4 of U1 , P1.5, P1.6 are respectively connected to ports 1, 9 and 8 of U5, the AD port of U1 is connected to ports 3, 6 and 11 of U5 at the same time, ports 2, 7 and 10 of U5 are respectively connected to analog signal 1, analog Connect to the output ports of signal 2 and analog signal 3.

[0012] In the present invention, U1 is the main CPU, P1.4, P1.5, and P1.6 are I / O ports, P0.4 is an AD port, and U5 is a signal gating chip. The present invention uses P1.4, P1.5, and P1.6 ports to control the strobe signal of U5, so that P0.4 port receives analog signal 1, analog signal 2, and analog signal 3 respectively and in time-sharing, and performs analog-digital The conversion is controlled by the main control program....

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Abstract

The invention relates to a circuit with an analog-digital (AD) port collecting three analog quantity signals. The circuit is characterized by comprising U1 and U2. An input / output (I / O) port P1.4, an I / O port P1.5 and an I / O port 1.6 of the U1 are respectively connected with a port 1, a port 9 and a port 8 of the U5. The AD port of the U1 is connected with a port 3, a port 6 and a port 11 of the U5 at the same time. A port 2, a port 7 and a port 10 of the U5 are respectively connected with an output port of an analog signal 1, an output port of an analog signal 2 and an output port of an analog signal 3. According to the circuit, the simple designed circuit extends the function of a central processing unit (CPU) and a whole system is enabled to be concise and reliable.

Description

technical field [0001] The invention relates to a circuit for collecting three analog signals by one AD port. Background technique [0002] When the general-purpose inverter is controlled, it usually needs to collect multiple analog signals, but the AD analog-to-digital conversion port of the control CPU has only one channel, which cannot realize the acquisition of three analog signals by one AD port. Contents of the invention [0003] The purpose of the present invention is to provide a circuit capable of collecting three analog signals through one AD port. [0004] In order to achieve the above-mentioned purpose, the technical solution of the present invention is to provide a three-way analog data collection method with one AD port [0005] The signal circuit is characterized in that it is composed of U1 and U5, the I / O ports P1.4, P1.5, and P1.6 of U1 are respectively connected to ports 1, 9 and 8 of U5, and the AD port of U1 is connected to U5 at the same time Ports ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03M1/12
Inventor 徐静
Owner 上海格立特电力电子有限公司
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