# US 7,327,002 B2 · Industrial control circuit using a single-chip microprocessor

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 7,327,002 B2
- Document ID: US7327002B2
- Status: Granted
- Kind: B2
- Application number: 11/224,157
- Filed: 2005-09-12
- Published: 2006-03-16
- Granted: 2008-02-05
- Earliest claimed: 2004-09-10
- Assignees: Innocom Technology (Shenzhen) Co., Ltd.; Innolux Display Corp.
- Inventors: Tie-Hai He
- Web page: https://patentgrep.com/patent/US7327002B2

## CPC

- G05B 19/0425: {Safety, monitoring}
- G05B 2219/25338: Microprocessor
- G05B 2219/25458: Opto isolation, optical separation
- G05B: CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS (systems for controlling or regulating non-electric variables G05D; systems for regulating electric or magnetic variables G05F; control devices or systems insofar as characterised by mechanical features only G05G)

## Abstract

An industrial control circuit includes: a first isolation circuit (22) for converting an analog signal to a low level voltage; a single-chip microprocessor SCM (23) for receiving the low level voltage from the first isolation circuit, and generating a control signal according to the low level voltage; and a second isolation circuit (24) for converting the control signal to a high level voltage. The SCM has at least thirty-two input/output (I/O) channels. Because the SCM used in the industrial control circuit has at least thirty-two I/O channels, the industrial control circuit can synchronously deal with sixteen-bit bidirectional communication.

## Claims

### Claim 1

An industrial control circuit, comprising:
a first isolation circuit for converting an analog signal to a low level voltage;
a single-chip microprocessor (SCM) for receiving the low level voltage from the first isolation circuit, and generating a control signal according to the low level voltage; and
a second isolation circuit for directly receiving the control signal and converting the control signal to a high level voltage;
wherein the SCM has at least thirty-two input/output (I/O) channels, which can synchronously deal with at least sixteen-bit bidirectional communication.

### Claim 2 (depends on 1)

The industrial control circuit as claimed in claim 1, further comprising a signal input circuit for receiving the analog signal from an external circuit and outputting the analog signal to the first isolation circuit.

### Claim 3 (depends on 1)

The industrial control circuit as claimed in claim 1, further comprising a switcher used to switch an external load circuit on and off according to the high level voltage.

### Claim 4 (depends on 3)

The industrial control circuit as claimed in claim 3, wherein the switcher is a high-power transistor.

### Claim 5 (depends on 3)

The industrial control circuit as claimed in claim 3, further comprising an output circuit for electrically connecting the switcher and the external load circuit.

### Claim 6 (depends on 1)

The industrial control circuit as claimed in claim 1, wherein the first isolation circuit comprises a light emitting diode (LED).

### Claim 7 (depends on 1)

The industrial control circuit as claimed in claim 1, wherein the second isolation circuit comprises a light emitting diode (LED).

### Claim 8 (depends on 1)

The industrial control circuit as claimed in claim 1, wherein the first and second isolation circuits each comprise an optoisolator.