CN2833672Y - HART interface holding blue tooth wireless transmission - Google Patents
HART interface holding blue tooth wireless transmission Download PDFInfo
- Publication number
- CN2833672Y CN2833672Y CNU2005200446432U CN200520044643U CN2833672Y CN 2833672 Y CN2833672 Y CN 2833672Y CN U2005200446432 U CNU2005200446432 U CN U2005200446432U CN 200520044643 U CN200520044643 U CN 200520044643U CN 2833672 Y CN2833672 Y CN 2833672Y
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- China
- Prior art keywords
- hart
- interface
- circuit
- wireless transmission
- power supply
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- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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- Small-Scale Networks (AREA)
- Control By Computers (AREA)
Abstract
The utility model discloses an HART interface holding blue tooth wireless transmission, which comprises a main control CPU, a Bluetooth module, a power supply voltage stabilization and switching circuit, an HART signal modulation and demodulation circuit, a battery charging management circuit, etc., wherein the Bluetooth module is connected with the main control CPU to carry out bidirectional information interchange; an HART bus interface after passing through a transformer or photoelectric isolation circuit, a shaping and filter circuit and a level switching circuit carries out HART signal modulation and demodulation, and is connected with the main control CPU to realize bidirectional information interchange; the power supply voltage stabilization and switching circuit and the battery charging management circuit respectively supply power to the main control CPU, the Bluetooth module, the HART level switching circuit, the shaping and filter circuit, and the transformer or photoelectric isolation circuit. A computer can send control information by Bluetooth, and the control information can be transformed into HART field bus standard signals and sent to an HART device in the field by the interface; answer signals of the HART device in the field can be transformed into Bluetooth signals by the interface to be sent to the computer.
Description
Technical field
The utility model relates to industrial field bus, especially a kind of HART interface that is used for possessing on the industrial field bus Bluetooth wireless transmission.
Background technology
Along with the further maturation of blue tooth wireless technology, it will permeate to industrial application, the facility that provides the user to operate.Yet, also do not have application so far at the relevant blue tooth wireless technology in HART fieldbus field.
Summary of the invention
The utility model is that a kind of HART interface of supporting Bluetooth transmission will be provided, it provides the interface between HART fieldbus and the bluetooth, computing machine sends control information by bluetooth, becomes the signal of HART standard for Fieldbus to be transferred to on-the-spot HART equipment by this interface conversion; And the answer signal of on-the-spot HART equipment becomes Bluetooth signal to send to computing machine by this interface conversion.
The utility model is achieved in that a kind of HART interface of supporting Bluetooth wireless transmission, comprises modulation and demodulation, HART level conversion, shaping and filtering circuit, transformer or the photoelectric isolating circuit of master cpu, bluetooth module, power supply voltage stabilizing and switching, battery charging management circuit, HART signal.Bluetooth module links to each other with master cpu, and carries out bi-directional exchanges of information; The HART bus interface is isolated by transformer or photoelectricity, shaping and filtering circuit, and level shifting circuit, the modulation and demodulation of HART signal are connected the realization bi-directional exchanges of information with master cpu; Power supply voltage stabilizing and switching, battery charging management circuit are given master cpu, bluetooth module, HART level conversion, shaping and filtering circuit, transformer or photoelectric isolating circuit power supply respectively.
It also comprises the electric power controller of being made up of power supply voltage stabilizing and switching, battery charging management circuit and backup battery, when the external power supply input disconnects, powers to system.
Realize two-way communication between bluetooth and the HART fieldbus.
The HART interface is the interface that meets the HART standard for Fieldbus.Master cpu can be 8,16 or 32-bit microprocessor.
The utlity model has the interface between HART fieldbus and the bluetooth, calculate function and send control information, become the signal of HART standard for Fieldbus to be transferred to on-the-spot HART equipment by this interface conversion by bluetooth; And the answer signal of on-the-spot HART equipment becomes Bluetooth signal to send to computing machine by this interface conversion.It makes user's operation break away from the constraint of cable, can be widely used in industry spot.
Description of drawings
Fig. 1 is the utility model system schematic.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is further described.
As shown in Figure 1, a kind of HART interface of supporting Bluetooth wireless transmission comprises modulation and demodulation, HART level conversion, shaping and filtering circuit, transformer or the photoelectric isolating circuit of master cpu, bluetooth module, backup battery, power supply voltage stabilizing and switching, battery charging management circuit, HART signal.Bluetooth module links to each other with master cpu, and carries out bi-directional exchanges of information; The HART bus interface is isolated by transformer or photoelectricity, and shaping and filtering circuit, level shifting circuit are connected with master cpu realizes bi-directional exchanges of information; Power supply voltage stabilizing and switching, battery charging management circuit are given master cpu, bluetooth module, HART level conversion, shaping and filtering circuit, transformer or photoelectric isolating circuit power supply respectively and backup battery are charged, when the external power supply input disconnects, power by backup battery.
Realize two-way communication between bluetooth and the HART fieldbus.The HART interface is the interface that meets the HART standard for Fieldbus.Master cpu can be 8,16 or 32-bit microprocessor.
The HART interface of support Bluetooth wireless transmission of the present utility model, its master cpu can also be realized the conversion of HART agreement and other communications protocol by protocol conversion.
The utility model can convert the wireless blue tooth communications protocol to the HART bus signals of standard, i.e. the BELL202 frequency shift keyed signals of 1200 baud rates, and 1200Hz is modulated to logical one, and 2200Hz is modulated to logical zero.Bluetooth module is the standard that meets Bluetooth version 1.1, has realized the modular circuit of bluetooth underlying protocol (comprising BaseBand Protocol (BBP) baseband protocol, LinkControl Protocol (LCP) interlinkage agreement, Link Management Protocol (LMP) LMP Link Manager Protocol, HostController Interface (HCI) master interface).The power supply of interface can be outside direct current input, also can be the internal cell power supply, and battery management and charging circuit are provided, and when the external dc power input is arranged, can charge to battery.Bluetooth module is when receiving the signal input, carry out protocol analysis, then data are sent to master cpu by serial or parallel interface, master cpu is sent to the HART chip by serial line interface with data, carries out the modulation and demodulation of HART signal, will remove undesired signal through shaping and filtering circuit, guarantee the signal transmission accurately and reliably, by behind the level shifting circuit, isolate the HART signal of the standard that converts to again by transformer or photoelectricity then, be sent to the HART bus.Data transmission is two-way, and the signal of HART bus is sent to HART modulation and demodulation chip through after filtering and the level conversion, and the digital signal after the demodulation is sent to master cpu by serial line interface, and then sends from bluetooth module.
Embodiment
Below in conjunction with embodiment the utility model is further described.
Master cpu adopts the two serial ports RISC CPU of ATMEL MEGA162, wherein built-in 16K FLASH, and 1K RAM and 512BYTE EEPROM adopt built-in house dog.HART modulation and demodulation chip adopts the HT2012 of SMAR company, and it is connected with the serial ports of CPU, and HART filtering and shaping circuit adopt operation amplifier circuit, adopts the transformer isolation mode to realize the isolation of HART bus and internal circuit.External dc power power supply and two kinds of modes of internal cell power supply are adopted in the power supply power supply, the LM2576DC-DC circuit of National Semiconductor is adopted in the external power source voltage stabilizing, can adapt to the wide voltage input of 9～36V, battery adopts the mobile phone of standard lithium battery 3.6V 600mAH, inside provides battery charging management circuit, adopt the MAX1811 chip of MAXIM company, when the external power source input is arranged, adopt external power source and give lithium cell charging, when not having the external power source input, adopt inner lithium battery power supply.Bluetooth module adopts SBT-800-BBM (UART) bluetooth module of the blue communication common carrier of Canadian prestige, is connected with the another one serial ports of CPU.
Utilize the HART interface of described support Bluetooth wireless transmission and the palm PC of support bluetooth, can form wireless HART fieldbus acquisition system, palm PC just can escalate into the manual operator of HART fieldbus.
Claims (6)
1. HART interface of supporting Bluetooth wireless transmission, the modulation and demodulation circuit, HART level conversion, shaping and filtering circuit, transformer or the photoelectric isolating circuit that comprise master cpu, bluetooth module, power supply voltage stabilizing and switching, battery charging management circuit, HART, it is characterized in that, described bluetooth module links to each other with master cpu, and carries out bi-directional exchanges of information; The HART bus interface is isolated by transformer or photoelectricity, shaping and filtering circuit, and the modulation and demodulation of carrying out the HART signal behind the level conversion electricity are connected the realization bi-directional exchanges of information with master cpu; Power supply voltage stabilizing and switching, battery charging management circuit are given modulation and demodulation circuit, HART level conversion, shaping and filtering circuit, transformer or the photoelectric isolating circuit power supply of master cpu, bluetooth module, HART respectively.
2. the HART interface of support Bluetooth wireless transmission according to claim 1, it is characterized in that, it also comprises the electric power controller of being made up of power supply voltage stabilizing and switching, battery charging management circuit and backup battery, when the external power supply input disconnects, is powered by the backup battery through overcharging.
3. the HART interface of support Bluetooth wireless transmission according to claim 1 is characterized in that, realizes two-way communication between described bluetooth and the HART fieldbus.
4. the HART interface of support Bluetooth wireless transmission according to claim 1 is characterized in that, described HART interface is the interface that meets the HART standard for Fieldbus.
5. the HART interface of support Bluetooth wireless transmission according to claim 1 is characterized in that, described master cpu can be 8,16 or 32-bit microprocessor.
6. the HART interface of support Bluetooth wireless transmission according to claim 1 is characterized in that, described master cpu can be realized the conversion of HART agreement and other communications protocol by protocol conversion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200446432U CN2833672Y (en) | 2005-08-30 | 2005-08-30 | HART interface holding blue tooth wireless transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200446432U CN2833672Y (en) | 2005-08-30 | 2005-08-30 | HART interface holding blue tooth wireless transmission |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2833672Y true CN2833672Y (en) | 2006-11-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200446432U Expired - Fee Related CN2833672Y (en) | 2005-08-30 | 2005-08-30 | HART interface holding blue tooth wireless transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2833672Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252163A (en) * | 2013-06-28 | 2014-12-31 | 罗斯蒙特公司 | Logic capable power module |
| CN105704618A (en) * | 2016-01-15 | 2016-06-22 | 泉州市九都电子科技有限公司 | Solar Bluetooth loudspeaker box |
-
2005
- 2005-08-30 CN CNU2005200446432U patent/CN2833672Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104252163A (en) * | 2013-06-28 | 2014-12-31 | 罗斯蒙特公司 | Logic capable power module |
| CN104252163B (en) * | 2013-06-28 | 2020-07-10 | 罗斯蒙特公司 | Power module with logic capability |
| CN105704618A (en) * | 2016-01-15 | 2016-06-22 | 泉州市九都电子科技有限公司 | Solar Bluetooth loudspeaker box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |