CN202661180U - Temperature acquisition system based on CAN bus - Google Patents
Temperature acquisition system based on CAN bus Download PDFInfo
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- CN202661180U CN202661180U CN201220213910.4U CN201220213910U CN202661180U CN 202661180 U CN202661180 U CN 202661180U CN 201220213910 U CN201220213910 U CN 201220213910U CN 202661180 U CN202661180 U CN 202661180U
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Abstract
A temperature acquisition system based on a CAN bus comprises temperature acquisition terminals, the CAN bus, and a host computer. Each temperature acquisition terminal comprises a central processing unit, and a data acquisition interface module, a digital display module, a parameter setting module, and a CAN bus communication module which are respectively connected with the central processing unit. The CAN bus communication module is connected with the host computer through the CAN bus. According to the utility model, CAN industrial field bus technologies are adopted and a data transmission network is in a tree structure in which multistage expansions can be performed and the farthest transmission distance of a single branch can reach ten thousand meters; and each temperature acquisition terminal can be externally connected with multiple digital temperature sensors, so that the temperature acquisition system can flexibly meet different requirements of a field and maximally reduce the total power consumption and cost of the system. The temperature acquisition system not only is characterized by being high in transmission rate, far in transmission distance, and strong in anti-interference capability, but also is capable of meeting the needs for long-range cable temperature measurement of industrial and mining enterprises and reducing the total power consumption of the system.
Description
Technical field
The utility model relates to a kind of data acquisition, specifically a kind of temperature acquisition system based on the CAN bus.
Background technology
Industrial enterprise's production task is heavy, and electric load is large, generally all is in the large load operation state for various production equipments provide the power cable of power, produces easily overheating fault, need to carry out Real-Time Monitoring to its running temperature.
Because power cable is laid on the underground of whole industrial enterprise mainly with tunnel style greatly, have have a very wide distribution, the characteristics of manual patrol detection difficult, and the cable tunnel reaches several meters deeply, and almost completely therefore electromagnetic screen can't use communication transmission image data.At present, the transmission mode of the temperature monitoring of underground power cable commonly used extensively adopts RS485 or RS232 communication mode, but not only transfer rate is low for this transfer bus technology, and transmission range is short, and the data antijamming capability on the transmission line is low, does not satisfy real-time.
The utility model content
For above-mentioned deficiency, the utility model provides a kind of temperature acquisition system based on the CAN bus, it not only has the strong characteristics of transfer rate height, long transmission distance and antijamming capability, and can satisfy industrial enterprise's needs of cable thermometric on a large scale, has reduced the overall system power consumption.
The technical scheme in the invention for solving the technical problem is: a kind of temperature acquisition system based on the CAN bus, comprise the temperature acquisition terminal, CAN bus and host computer, described temperature acquisition terminal is connected with host computer by the CAN bus, it is characterized in that, described temperature acquisition terminal comprises central processing unit, the data acquisition interface module, digital display module, parameter setting module and CAN bus communication module, described CPU (central processing unit) respectively with the data acquisition interface module, digital display module, parameter setting module is connected with CAN bus communication module, and described CAN bus communication module is connected with the CAN bus.
Preferably, described data acquisition interface module comprises the digital temperature sensor interface, connects in order to connect digital temperature sensor.
Preferably, institute's central processing unit comprises the MSP430 series monolithic.
Preferably, described CAN bus communication module comprises the CAN controller chip.
The beneficial effects of the utility model are: the utility model has adopted CAN industrial field bus technology, and data transmission network is tree, can carry out multi-tier, and single branch farthest transmission range can reach ten kms; Each temperature acquisition terminal can external multi-path digital temperature sensor, has both satisfied flexibly on-the-spot different demand, also reduces to greatest extent overall power consumption and the cost of system.The utility model not only has the strong characteristics of transfer rate height, long transmission distance and antijamming capability, and can satisfy industrial enterprise's needs of cable thermometric on a large scale, has reduced the overall system power consumption.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing:
Fig. 1 theory diagram of the present utility model.
Embodiment
As shown in Figure 1, a kind of temperature acquisition system based on the CAN bus of the present utility model comprises temperature acquisition terminal, CAN bus and host computer.Described temperature acquisition terminal comprises central processing unit, data acquisition interface module, digital display module, parameter setting module and CAN bus communication module, described CPU (central processing unit) is connected with data acquisition interface module, digital display module, parameter setting module and CAN bus communication module respectively, and described CAN bus communication module is connected with host computer by the CAN bus.
Wherein, described data acquisition interface module comprises the digital temperature sensor interface, with thinking that the access of multi-path digital temperature sensor provides interface, accessible at most 8 road DS18B20 sensors; Institute's central processing unit comprises the MSP430 series monolithic, selects the MSP430 series monolithic MSP430F149 of American TI Company, by communicating to be responsible for the control and management of each module and collection, processing, demonstration and the transmission of temperature data with each module; The MCP2515 CAN controllers chip that described CAN bus communication module adopts Microchip company to release, by SPI interface and MCU swap data, be transmitted to central controller in order to the host computer instruction that will receive and process, and upload the repeat-back data on the CAN bus; Described parameter setting module adopts 18 toggle switch to set mailing address, and 14 toggle switch is set external digital temperature sensor way; Described digital display module adopts a plurality of 7 segment numeral pipe 74HC595 to form, and is used for showing the temperature that collects, and with LED indicating device running status.
Claims (4)
1. temperature acquisition system based on the CAN bus, comprise temperature acquisition terminal, CAN bus and host computer, described temperature acquisition terminal is connected with host computer by the CAN bus, it is characterized in that, described temperature acquisition terminal comprises central processing unit, data acquisition interface module, digital display module, parameter setting module and CAN bus communication module, described CPU (central processing unit) is connected with data acquisition interface module, digital display module, parameter setting module and CAN bus communication module respectively, and described CAN bus communication module is connected with the CAN bus.
2. a kind of temperature acquisition system based on the CAN bus according to claim 1 is characterized in that, described data acquisition interface module comprises the digital temperature sensor interface, connects in order to connect digital temperature sensor.
3. a kind of temperature acquisition system based on the CAN bus according to claim 1 is characterized in that, institute's central processing unit comprises the MSP430 series monolithic.
4. a kind of temperature acquisition system based on the CAN bus according to claim 1 is characterized in that, described CAN bus communication module comprises the CAN controller chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220213910.4U CN202661180U (en) | 2012-05-11 | 2012-05-11 | Temperature acquisition system based on CAN bus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220213910.4U CN202661180U (en) | 2012-05-11 | 2012-05-11 | Temperature acquisition system based on CAN bus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202661180U true CN202661180U (en) | 2013-01-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201220213910.4U Expired - Fee Related CN202661180U (en) | 2012-05-11 | 2012-05-11 | Temperature acquisition system based on CAN bus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202661180U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625276A (en) * | 2014-12-04 | 2015-05-20 | 宁波市华正信息技术有限公司 | On-line operation parameter real-time monitoring system and method of spark machine |
| CN106404196A (en) * | 2016-11-30 | 2017-02-15 | 南宁学院 | Temperature measurer based on CAN bus |
-
2012
- 2012-05-11 CN CN201220213910.4U patent/CN202661180U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104625276A (en) * | 2014-12-04 | 2015-05-20 | 宁波市华正信息技术有限公司 | On-line operation parameter real-time monitoring system and method of spark machine |
| CN106404196A (en) * | 2016-11-30 | 2017-02-15 | 南宁学院 | Temperature measurer based on CAN bus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130109 Termination date: 20140511 |