CN103645718A

CN103645718A - Air conditioner monitoring system based on RS-485 bus

Info

Publication number: CN103645718A
Application number: CN201310692230.4A
Authority: CN
Inventors: 张建; 高耀雅; 吴杏峰; 胡震; 商小玥; 赵云涛
Original assignee: Guangdong Chigo Air Conditioning Co Ltd
Current assignee: Guangdong Chigo Air Conditioning Co Ltd
Priority date: 2013-12-14
Filing date: 2013-12-14
Publication date: 2014-03-19

Abstract

The invention provides an air conditioner monitoring system based on an RS-485 bus. The air conditioner monitoring system is characterized by comprising an upper monitoring machine, an RS-485 bus structure and multiple air conditioner test machines, wherein the RS-485 bus structure comprises the RS-485 bus, a host computer and multiple secondary computers, UART interfaces of the multiple secondary computers are respectively connected with communication interfaces of the corresponding air conditioner test machines, the upper monitoring machine is connected with the host computer through a serial communication module, and the host computer and RS-485 interfaces of the secondary computers are connected with the RS-485 bus. According to the air conditioner monitoring system, wiring layout of the air conditioner monitoring system in a laboratory can be greatly simplified, acquisition and analysis on data can be visually carried out by an engineer, performance control of frequency conversion air conditioners can be effectively improved, characteristics of high efficiency and energy-saving performance of the frequency conversion air conditioners can be better performed, moreover, the monitoring system can further reduce labor intensity and errors during artificial monitoring of the engineer.

Description

A kind of monitoring air-conditioner based on RS-485 bus

Technical field

The present invention relates to the technical field of air conditioning monitoring, refer in particular to a kind of monitoring air-conditioner based on RS-485 bus.

Background technology

Along with social development, the theory of energy-saving and emission-reduction is rooted in the hearts of the people, tradition air conditioning energy consumption is large, and do not meet the requirement of current environmental protection and energy saving, and convertible frequency air-conditioner has good energy-conserving effect, accuracy of temperature control is high, the many merits such as low noise, therefore, convertible frequency air-conditioner will inevitably replace traditional air-conditioning, the control program of current convertible frequency air-conditioner technology and control parameter are complicated and various, slip-stick artist is difficult to the parameter of converter technique to be optimized rectification, this has strengthened the difficulty that converter technique advances undoubtedly, limited the performance of convertible frequency air-conditioner high energy efficiency ratio, develop converter technique, develop converter technique, will test by a large amount of air conditioning test machines, by collecting the experimental data of air conditioning test machine, slip-stick artist carries out the analysis of performance again to these data, optimize and rectification, thereby the control program of improvement converter technique and control parameter, at present, in existing air-conditioning experiment monitor system, all much to take manually image data voluntarily of slip-stick artist, make the manual supervisory labour intensity of slip-stick artist large, easily there is error, simultaneously, slip-stick artist need to frequently enter laboratory, environment to laboratory easily damages, like this, the test environment of convertible frequency air-conditioner is changed, the data precision declines, be unfavorable for the technical parameter of convertible frequency air-conditioner accurately to collect, simultaneously, also easily cause potential safety hazard, therefore, the improvement of air-conditioning experiment monitor system is imperative.

Summary of the invention

The object of the invention is to overcome the deficiencies in the prior art, provide a kind of reasonable in design, can realize long Distance Transmission, can many, the convenient and simple for connection monitoring air-conditioners based on RS-485 bus of connection device.

For achieving the above object, technical scheme provided by the present invention is: a kind of monitoring air-conditioner based on RS-485 bus, this system includes upper monitoring machine, RS-485 bus structure and a plurality of air conditioning test machine, wherein, RS-485 bus structure are by RS-485 bus, main frame and a plurality of slave machine, the UART interface of a plurality of slaves joins with the communication interface of corresponding air conditioning test machine respectively, upper monitoring machine is connected by serial communication module with main frame, and RS-485 interface and RS-485 bus in main frame and slave are joined.

Described upper monitoring machine is equipped with the monitoring software of each operational factor of monitoring air conditioning test machine.

Described main frame and the hardware circuit of slave include microcontroller, UART interface module, keyboard input module, demonstration charactron and RS-485 interface module.

Described RS-485 interface module includes RS-485 chip and RS-485 interface, wherein, the A port of RS-485 chip and B port respectively after resistance in series R15 and resistance R 16 and RS-485 interface join.

The RO port of described RS-485 chip and DI port access respectively RXD port and the TXD port of microcontroller, and the SEL port of described keyboard input module, DOWN port, LEFT port, RIGHT port and UP port access respectively SEL port, DOWN port, LEFT port, RIGHT port and the UP port in microprocessor.

Described UART interface module and demonstration charactron and microprocessor are electrically connected.

The present invention is after having adopted such scheme, its great advantage is that upper monitoring machine realizes instant messaging by RS-485 bus and air conditioning test machine, utilize RS-485 bus transfer in upper monitoring machine the real-time running data parameter of air conditioning test machine, with the monitoring software in upper monitoring equipment, real time data is collected again, analyze, optimization, because the transmission range of RS-485 bus can reach 3000 meters, RS-485 bus can be accessed by numerous Devices to tests in addition, and RS-485 bus structure are simple, transmit convenient and swift, utilize RS-485 bus to design this supervisory system, can greatly simplify the distributing of laboratory monitoring air-conditioner, can make again slip-stick artist's collection analysis data more intuitively, can effectively improve the Properties Control of convertible frequency air-conditioner, its energy-efficient feature is brought into play better, simultaneously, this supervisory system not only can reduce artificial labour intensity and the error monitoring of slip-stick artist, and effectively protect staff frequently to carry out the destruction that laboratory environment is caused in laboratory, reduce potential safety hazard, can also make collection analysis air conditioning test machine service data more accurate, for improving converter technique scheme and optimizing frequency conversion parameter, provide effective guarantee.

Accompanying drawing explanation

Fig. 1 is system framework figure of the present invention.

Fig. 2 is electric control schematic diagram of the present invention.

Embodiment

Below in conjunction with specific embodiment, the invention will be further described:

Referring to accompanying drawing 1 to shown in accompanying drawing 2, the monitoring air-conditioner based on RS-485 bus described in the present embodiment, it includes upper monitoring machine 1, RS-485 bus structure 2 and a plurality of air conditioning test machine 3, wherein, RS-485 bus structure 2 include RS-485 bus 201, main frame 202 and a plurality of slave 203, the monitoring software of monitoring each operational factor of air conditioning test machine is housed in upper monitoring machine 1, and the hardware circuit of main frame 202 and slave 203 includes microcontroller 5, UART interface module 6, keyboard input module 7, show charactron 8 and RS-485 interface module 9, and RS-485 interface module 9 includes RS-485 chip 901 and RS-485 interface 902, the A port of RS-485 chip 901 and B port are connected respectively after R15 and R16 and are joined with RS-485 interface, UART interface module 6, show that charactron 8 and microcontroller 5 are electrically connected, the RO port of RS-485 chip 901 and DI port access respectively RXD port and the TXD port of microcontroller 5, and the SEL port of keyboard input module 7, DOWN port, LEFT port, RIGHT port and UP port electrically access respectively the SEL port in microprocessor (5), DOWN port, LEFT port, RIGHT port and UP port.Described microcontroller 5 plays major control effect, and show that acting as of charactron 8 shows the current information such as automatically controlled state, keyboard input module 7 act as collection keying input information, thereby the ID that makes main frame 202 or slave 203 resets or the function such as reset, described UART interface module 6 is joined with the communication interface of air conditioning test machine 3, service data that can Real-time Collection air conditioning test machine 3, and RS-485 interface and RS-485 bus in main frame 202 and slave 203 joined, realize data circulation.

In the time will carrying out convertible frequency air-conditioner experiment, 3 operations of air conditioning test machine, because each slave 203 is connected with corresponding convertible frequency air-conditioner testing machine 3 respectively, therefore, the various parameters of air conditioning test machine 3 operations are gathered by the UART interface module of slave 203, slave 203 collects after the service data of air conditioning test machine 3, slave 203 is adjusted optimization by 5 pairs of data of microprocessor, then, the RS-485 interface of data from slave 203 carries out transmitting in RS-485 bus, and the RS-485 interface of main frame 202 is same and RS-485 bus 201 is joined, slave 203 is set different IP by keyboard input module 7 simultaneously, therefore, the data that collect when each slave 203 are in RS-485 bus time, the data of different slave 203 can be found and identify to the RS-485 interface module 9 of main frame 202, collecting of 9 pairs of data of RS-485 interface module of main frame 202, again data are converted to UART data, by the UART interface module 6 access serial communication modules 4 of main frame 202, this serial communication module 4 is connected with the USB interface of upper monitoring machine 1, data are through the conversion of serial communication module 4, and then be sent in upper monitoring machine 1, monitoring software in upper monitoring machine 1 can reflect the ruuning situation of air conditioning test machine 3 intuitively, comprise real time data window, each parameter values curve map of laboratory etc., simultaneously, this monitoring software can also freely be selected the real time data of different air conditioning test machines 3, by the various real-time parameters of air conditioning test machine 3 are analyzed accordingly, optimize and rectification, and data in monitoring software can be uploaded in database, computer in LAN (Local Area Network) and upper monitoring machine 3 also can carry out data communication.Described supervisory system has effectively utilized RS-485 bus structure simple, easily realize, long transmission distance, the feature that access device is many, thereby a plurality of air conditioning test machines 3 are by being connected with slave 203 in access RS-485 bus 201, can meet to greatest extent the quantity of air conditioning test machine 3, hardware circuit is optimized to design simultaneously, can be remote thereby realize supervisory system, quick instantaneous acquiring operational factor and data, analyze rectification parameter, greatly alleviated the manual supervisory labour intensity of slip-stick artist, reduce the error of image data, slip-stick artist no longer needs frequently to enter laboratory, effectively protect the environment of air conditioning test machine 3 operations, also reduced potential safety hazard simultaneously, make the data of operation of air conditioner more accurate, experimental data can reflect intuitively, be conducive to slip-stick artist experimental data is analyzed to rectification, can effectively improve the Properties Control of convertible frequency air-conditioner, the energy-efficient advantage of convertible frequency air-conditioner is brought into play better.

The examples of implementation of the above are only the present invention's preferred embodiment, not with this, limit practical range of the present invention, therefore the variation that all shapes according to the present invention, principle are done all should be encompassed in protection scope of the present invention.

Claims

1. the monitoring air-conditioner based on RS-485 bus, it is characterized in that: this system includes upper monitoring machine (1), RS-485 bus structure (2) and a plurality of air conditioning test machine (3), wherein, RS-485 bus structure are by RS-485 bus (201), main frame (202) and a plurality of slave (203) form, the UART interface of a plurality of slaves (203) joins with the communication interface of corresponding air conditioning test machine (3) respectively, upper monitoring machine (1) is connected by serial communication module (4) with main frame (202), RS-485 interface and RS-485 bus (201) in main frame (202) and slave (203) are joined.

2. a kind of monitoring air-conditioner based on RS-485 bus according to claim 1, is characterized in that: described upper monitoring machine (1) is equipped with the monitoring software of each operational factor of monitoring air conditioning test machine.

3. a kind of monitoring air-conditioner based on RS-485 bus according to claim 1, is characterized in that: the hardware circuit of described main frame (202) and slave (203) includes microcontroller (5), UART interface module (6), keyboard input module (7), shows charactron (8) and RS-485 interface module (9).

4. a kind of monitoring air-conditioner based on RS-485 bus according to claim 3, it is characterized in that: described RS-485 interface module (9) includes RS-485 chip (901) and RS-485 interface (902), wherein, the A port of RS-485 chip (901) and B port respectively after resistance in series R15 and resistance R 16 and RS-485 interface (902) join.

5. a kind of monitoring air-conditioner based on RS-485 bus according to claim 4, it is characterized in that: the RO port of described RS-485 chip (901) and DI port access respectively RXD port and the TXD port of microcontroller (5), the SEL port of described keyboard input module (7), DOWN port, LEFT port, RIGHT port and UP port access respectively SEL port, DOWN port, LEFT port, RIGHT port and the UP port in microprocessor (5).

6. a kind of monitoring air-conditioner based on RS-485 bus according to claim 3, is characterized in that: described UART interface module (6), demonstration charactron (8) are electrically connected with microprocessor (5).