CN100426159C - Control device with dual processors - Google Patents

Abstract

The invention provides a control device with dual processors, comprising: a circuit substrate; the first central processing unit is arranged on the circuit substrate and used for receiving a control signal so as to control a first device to operate; the second central processing unit is arranged on the circuit substrate and used for receiving the control signal so as to control a second device to operate; and the first communication circuit is arranged between the first central processing unit and the second central processing unit and used for providing communication between the first central processing unit and the second central processing unit, wherein the first central processing unit also executes core control software and peripheral software of the first device and peripheral software of the air conditioner, and the second central processing unit also executes the peripheral software of the first device and the peripheral software of the second device so as to respectively control the first device and the second device to operate.

Description

Control unit with dual processors

technical field

The invention relates to an air-conditioning system control device, in particular to an air-conditioning system control device with dual processors.

Background technique

With the development of the air-conditioning industry (Heating Ventilation and Air Conditioning, HVAC), buildings, department stores, factories, hotels and other public places use the air-conditioning system to adjust the indoor temperature to provide a more comfortable environment, and the air-conditioning system includes inverters and Air conditioners, and control the operation of inverters and air conditioners by detecting the temperature and humidity values of the external environment. However, frequency inverter manufacturers and air conditioner manufacturers often consider that their core technologies may be leaked, and control software integration is not easy to integrate with Problems such as high integration costs complicate the control method of the air conditioning system.

Most of the current air-conditioning system control devices use their own control circuit boards (that is, the inverter and the air conditioner are controlled independently), so they have the disadvantages of large circuit size and high manufacturing cost, and the two control circuits are connected through external communication circuits. Communication and control (for example, serial communication interface specification RS-232), in addition to the long communication path, is also susceptible to noise interference, which will lead to equipment misoperation in severe cases.

Please refer to Fig. 1, which is a system block diagram of a currently used air conditioning system control device. In the figure, the inverter processor 1a is arranged on the circuit board 1, and communicates with the air conditioner processor arranged on the circuit board 2 through an external communication circuit 3 2a for communication, and the inverter processor 1a and the air conditioner processor 2a respectively execute exclusive core control software, peripheral software and system software to control the inverter and the air conditioner (not shown in the figure) correspondingly, for the convenience of description , other circuit blocks of the circuit substrate 1 and the circuit substrate 2 are not shown in the figure.

Therefore, how to provide a low-cost integrated control device with two types of processors has become one of the problems to be solved by researchers.

Contents of the invention

In view of the above problems, the main purpose of the present invention is to provide a control device with dual processors, which integrates the processors and peripheral circuits of the first device and the second device on the same circuit substrate, and cooperates with the corresponding control Software, so as to reduce the size of the control device, further reducing its manufacturing cost.

Therefore, in order to achieve the above object, the air-conditioning system control device with dual processors disclosed in the present invention includes: a first central processing unit, a second central processing unit, a first communication circuit, a second communication circuit, and a power drive circuit , a first reset circuit, a second reset circuit, a command input circuit, an operating status display circuit, a detection circuit and peripheral circuits.

The first central processing unit receives the control signal to control the operation of the first device, and executes related control software and peripheral software.

The second central processing unit receives the control signal to control the operation of the second device, and executes related control software and peripheral software.

The first communication circuit provides the first central processing unit to communicate with the second central processing unit, and the first communication circuit includes: an isolated synchronous/asynchronous serial communication port, an optical coupler, an optical fiber circuit or an isolation transformer.

The second communication circuit provides the first central processing unit and the second central processing unit to communicate with an external device (for example, a remote computer) to perform remote control operations.

The power drive circuit is used for converting the power supply specification (for example, AC and DC power conversion), and providing the power required for the operation of the first CPU.

The first reset circuit is connected with the first central processing unit and is used to generate a reset signal to initialize the operation state of the first central processing unit.

The second reset circuit is connected with the second central processing unit and is used for generating a reset signal to initialize the operation state of the second central processing unit.

The command input circuit is used for inputting operation control commands and generating corresponding control signals to control the operation of the first device and the second device.

The operating status display circuit is used to display the operating status or fault information of the first device and the second device, and the operating status display circuit can be composed of a light emitting diode, a seven-segment display, a liquid crystal display and its driving circuit.

The detection circuit is used to detect the operation status of the first device and the second device, as well as the temperature value and humidity value of the external environment, and generate corresponding detection signals.

Peripheral circuits are used to process operations such as conversion, input and output of the control and detection signals of the first central processing unit and the second central processing unit, including: analog/digital converter (ADC), digital-to-analog converter (DAC ), input/output port (I/O), timer (Timer) and counter (Counter).

Specifically, the control device with dual processors provided by the present invention includes: a circuit substrate; a first central processing unit disposed on the circuit substrate to receive a control signal to control the operation of a first device; A second central processing unit, arranged on the circuit substrate, receives the control signal to control the operation of a second device; and a first communication circuit, arranged between the first central processing unit and the second central processing unit During the period, the first central processing unit is provided to communicate with the second central processing unit; wherein the first central processing unit also executes the core control software and peripheral software of the first device and the peripheral software of the second device. The two CPUs also execute the peripheral software of the first device and the peripheral software of the second device to respectively control the operation of the first device and the second device.

According to the control device with dual processors of the present invention, the first device is a frequency converter.

According to the control device with dual processors of the present invention, the second device is an air conditioner.

According to the control device with dual processors of the present invention, it also includes a second communication circuit, which provides the first central processing unit and the second central processing unit to communicate with an external device to perform a remote control operation.

According to the control device with dual processors of the present invention, it also includes: a first reset circuit that generates a reset signal to initialize the computing state of the first central processing unit; a second reset circuit that generates a A reset signal is used to initialize the computing state of the second central processing unit; a power drive circuit is used to convert a power supply specification to provide the power required for the operation of the first central processing unit; a command input circuit is used to input a an operation control command, and generate the control signal; an operation state display circuit, displaying the operation state of the first device and the second device; a detection circuit, used for detecting the operation state of the first device and the second device and A temperature value and humidity value of the external environment, and generate a corresponding detection signal; and a peripheral circuit, used for converting and inputting the control signal and the detection signal of the first central processing unit and the second central processing unit and output processing.

According to the control device with dual processors of the present invention, the operating state display circuit includes a plurality of light emitting diodes.

According to the control device with dual processors of the present invention, the operating state display circuit includes a plurality of seven-segment displays.

According to the control device with dual processors of the present invention, the operating state display circuit includes a liquid crystal display.

According to the control device with dual processors of the present invention, the peripheral circuit includes: an analog/digital converter, a digital-analog converter, an input/output port, a timer and a counter.

According to the control device with dual processors of the present invention, the first communication circuit is composed of isolated synchronous/asynchronous serial communication ports.

According to the control device with dual processors of the present invention, wherein the first communication circuit includes an optocoupler.

According to the control device with dual processors of the present invention, wherein the first communication circuit includes an optical fiber circuit.

According to the control device with dual processors of the present invention, wherein the first communication circuit includes an isolation transformer.

Through this dual-processor control device, the processors and peripheral circuits of the first device and the second device are integrated on the same circuit substrate, and the corresponding control software is used to control the operation of the first device and the second device , so as to reduce the circuit volume of the control device and reduce its manufacturing cost.

Regarding the features and implementation of the present invention, the preferred embodiments are described in detail as follows in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is a system block diagram of the prior art; and

Fig. 2 is a system block diagram proposed by the present invention.

Wherein, the reference signs are explained as follows:

1 circuit board 1a inverter processor

2 Circuit board 2a Air conditioner processor

3 external communication circuit 10 first central processing unit

11 Second central processing unit 12 First communication circuit

13 Second communication circuit 14 Power drive circuit

15 The first reset circuit 16 The second reset circuit

17 Command input circuit 18 Operating state display circuit

19 Detection circuit 20 Peripheral circuit

30 First device 40 Second device

50 External device 100 Circuit board

Detailed ways

Please refer to Fig. 2, which is a system block diagram of the present invention. The following description takes an air conditioning system as an example, including: a first central processing unit 10, a second central processing unit 11, a first communication circuit 12, a second communication circuit 13, a power supply The drive circuit 14 , the first reset circuit 15 , the second reset circuit 16 , the command input circuit 17 , the operation status display circuit 18 , the detection circuit 19 and the peripheral circuit 20 .

The circuit substrate 100 is composed of a printed circuit board, and the required circuits are produced by chemical etching to arrange various circuit components. The types of the circuit substrate 100 include: composite substrates, ceramic substrates, metal substrates, thermoplastic Substrate and glass fiber cloth copper foil layer substrate and so on.

The first central processing unit 10 is arranged on the circuit board 100, receives control signals and performs arithmetic processing operations to control the operation (for example, start, stop or speed change) of the first device 30 (for example, a frequency converter), and execute the first The core and peripheral control software of a device 30 and the peripheral software of a second device 40 .

The second central processing unit 11 is arranged on the circuit substrate 100, communicates with the first central processing unit 10 through the first communication circuit 12, receives control signals and performs arithmetic processing operations to control the second device 40 (for example, an air conditioner) ), and execute the peripheral software of the first device 30 and the second device 40 .

The first communication circuit 12 is arranged on the circuit substrate 100 to provide communication between the first central processing unit 10 and the second central processing unit 11, and the first communication circuit 12 may include: isolated synchronous/asynchronous serial communication Ports, optocouplers, fiber optic circuits, or isolation transformers to reduce noise interference by using isolated communication circuits for communication.

The second communication circuit 13 is arranged on the circuit substrate 100 and is respectively connected with the first central processing unit 10 and the second central processing unit 11 to provide the first central processing unit 10 or the second central processing unit 11 with the external device 50 (for example, a remote computer) for communication to provide remote control, for example, a serial communication interface standard RS-232 or RS-485.

The power drive circuit 14 is arranged on the circuit substrate 100 and connected to the first central processing unit 10 for converting the power supply specification (for example, the conversion between AC and DC) to provide the power required for the operation of the first central processing unit 10 .

The first reset (Reset) circuit 15 is arranged on the circuit board 100 and is connected with the first central processing unit 10. When the air-conditioning system is restarted, it is used to generate a reset signal to initialize the first central processing unit 10. operating status.

The second reset circuit 16 is arranged on the circuit substrate 100 and is connected to the second central processing unit 11. When the air-conditioning system is restarted, it is used to generate a reset signal to initialize the operation state of the second central processing unit 11. .

The command input circuit 17 is arranged on the circuit substrate 100 and is connected to the second central processing unit 11 for inputting an operation control command and generating a control signal corresponding to the operation control command to control the operation of the first device 30 or the second device 40 , and the command input circuit 17 can be combined with a man-machine control interface to provide the user with control.

The operating status display circuit 18 is arranged on the circuit substrate 100 and is connected to the second central processing unit 11 to display the operating status or fault information of the first device 30 and the second device 40, and the operating status display circuit 18 may include A plurality of LED circuits, seven-segment displays or liquid crystal displays and their driving circuits.

The detection circuit 19 is arranged on the circuit substrate 100, and is respectively connected with the first central processing unit 10 and the second central processing unit 11, and detects the operating states of the first device 30 and the second device 40 through sensors (not shown in the figure). , and detect the temperature value or humidity value of the external environment, and generate a corresponding detection signal to provide to the first central processing unit 10 and the second central processing unit 11 to perform related calculations, so as to monitor the first device 30 and the second device 40 operation.

Peripheral circuits 20 are arranged on the circuit substrate 100 and are respectively connected to the first central processing unit 10 and the second central processing unit 11 for controlling and detecting signals of the first central processing unit 10 and the second central processing unit 11 Processing operations such as conversion, input and output, including: analog/digital converter (Analog to Digital Converter, ADC), digital-to-analog converter (Digital to Analog Converter, DAC), input/output port (I/O), timer (Timer) and counter (Counter), etc., by sharing the peripheral circuit 19, circuit components are saved and the manufacturing cost of the control device is reduced.

In addition, the embodiments provided by the present invention have the following characteristics:

1. The peripheral circuit and peripheral software of the processor communicate with each other through the communication circuit and can support each other (independent peripheral circuit and control software can also be selected).

2. The core processor can be grounded together with the primary side of the power supply (the dual processors can also be installed on the secondary side of the power supply), and an isolated or non-isolated power drive circuit and protection circuit can be selectively used.

3. The processor and man-machine interface of the client are isolated from the main circuit on the primary side of the power supply (that is, the relevant circuit of the first central processing unit), that is, there is no danger of high-voltage electric shock.

4. The core processor (that is, the first central processing unit) communicates with the client processor (that is, the second central processing unit) through an isolated circuit such as an optical coupler, an isolation transformer, or an optical fiber circuit to reduce noise interference.

5. The dual processors can individually communicate with external devices through the second set of communication circuits for control and other operations.

Through this dual-processor control device, the processors and peripheral circuits of the first device and the second device are integrated on the same circuit board, and the corresponding control software is used to control the operation of the first device and the second device , so as to reduce the circuit volume of the control device and reduce its manufacturing cost.

Although the present invention is disclosed above with the aforementioned preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications and modifications without departing from the spirit and scope of the present invention. Therefore The scope of patent protection of the present invention must be defined by the appended claims of this specification.

Claims (13)

1, a kind of control device with dual processor includes:

One circuit substrate;

One first central processing unit is arranged on this circuit substrate, receives a control signal, to control one first device running;

One second central processing unit is arranged on this circuit substrate, receives this control signal, to control one second device running; And

One first telecommunication circuit is arranged between this first central processing unit and this second central processing unit, provides this first central processing unit and this second central processing unit to communicate;

Wherein this first central processing unit is also carried out the peripheral software of core Control Software, peripheral software and this second device of this first device, this second central processing unit is also carried out this peripheral software of this first device and this peripheral software of this second device, to control this first device and this second device running respectively.

2, control device as claimed in claim 1 is characterized in that this first device is a frequency changer.

3, control device as claimed in claim 1 is characterized in that this second device is an air conditioner.

4, control device as claimed in claim 1 is characterized in that this control device also includes a second communication circuit, provides this first central processing unit and this second central processing unit and an external device (ED) to communicate, to carry out a Long-distance Control operation.

5, control device as claimed in claim 1 is characterized in that this control device also includes:

One first reset circuit produces a reset signal, with the compute mode of this first central processing unit of initialization;

One second reset circuit produces a reset signal, with the compute mode of this second central processing unit of initialization;

One power driving circuit is changed power supply specifications for delivery, to provide this first central processing unit running required power supply;

One command input circuit in order to import a running control command, and produces this control signal;

One operating condition display circuit shows this first device and this second operating condition of installing;

One testing circuit in order to detecting this first device and the operating condition of this second device and the temperature value and the humidity value of an external environment, and produces corresponding detection signal; And

Processing operation is changed, imports and exported to one peripheral circuit in order to this control signal and this detection signal to this first central processing unit and this second central processing unit.

6, control device as claimed in claim 5 is characterized in that this operating condition display circuit includes a plurality of light emitting diodes.

7, control device as claimed in claim 5 is characterized in that this operating condition display circuit includes a plurality of seven-segment displaies.

8, control device as claimed in claim 5 is characterized in that this operating condition display circuit includes a LCD.

9, control device as claimed in claim 5 is characterized in that this peripheral circuit includes: analog/digital converter, digital analog converter, input/output end port, timer and counter.

10, control device as claimed in claim 1 is characterized in that this first telecommunication circuit is made up of isolated synchronous/asynchronous communication port.

11, control device as claimed in claim 1 is characterized in that this first telecommunication circuit includes photo-coupler.

12, control device as claimed in claim 1 is characterized in that this first telecommunication circuit includes a fiber optic circuit.

13, control device as claimed in claim 1 is characterized in that this first telecommunication circuit includes an isolating transformer.

Images