CN201909987U - Constant-current supply networking system on basis of serial bus - Google Patents
Constant-current supply networking system on basis of serial bus Download PDFInfo
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- CN201909987U CN201909987U CN2010206611203U CN201020661120U CN201909987U CN 201909987 U CN201909987 U CN 201909987U CN 2010206611203 U CN2010206611203 U CN 2010206611203U CN 201020661120 U CN201020661120 U CN 201020661120U CN 201909987 U CN201909987 U CN 201909987U
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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
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- 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
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Abstract
The utility model relates to a constant-current supply networking system on the basis of a serial bus, which comprises a master controller of an upper computer and a slave controller of a lower computer and is characterized in that the upper computer comprises a man-machine interaction module connected with the master controller; the master controller is connected with the slave controller of the lower computer through the bus; and the slave controller is connected with an address coding module and at least one voltage controlled constant-current supply. By the constant-current supply networking system on the basis of the serial bus, the current setting and the load voltage or the current feedback of one upper computer on at least one constant-current supply of the lower computer can be realized. The constant-current supply networking system has a simple circuit structure and a higher market value.
Description
Technical field
The utility model relates to a kind of constant-current supply group network system based on universal serial bus.
Background technology
Constant-current supply has purposes widely in commercial production such as electrical heating, battery charge, LED driving and sphere of life, prior art, as patent 200810219818.7, although can realize constant current control, and size of current can be set, may not be identical but set electric current with actual current, and this technology is not monitored the function of actual current, nor possess networking function, can only use separately; In addition, patent 200720190515.8, although have networking function, information can only one-way transmission, each node can only receive data but can't feedback information, the effective management when this is unfavorable for that a lot of application scenarios require constant-current supply used in batches.
Summary of the invention
The purpose of this utility model provides a kind of constant-current supply group network system based on universal serial bus, and host computer of realization is controlled the constant-current supply of at least one slave computer.
The utility model is realized by the following technical solutions: a kind of constant-current supply group network system based on universal serial bus, comprise the master controller of host computer and the slave controller of slave computer, it is characterized in that: described host computer also comprises the human-computer interaction module that is connected with master controller; Described master controller is connected with the slave controller of slave computer through bus, and described slave controller is connected with geocoding module and at least one voltage controlled current source.
The utility model utilizes host computer of bus realization that the constant-current supply of at least one slave computer is controlled, and each node feedback information timely just can be known setup parameter and the real work parameter of knowing each constant-current supply in the circuit at the host computer human-computer interaction module.
Description of drawings
Fig. 1 is the utility model structural principle synoptic diagram.
Fig. 2 is the circuit theory synoptic diagram that the utility model slave computer connects two voltage controlled current sources.
Fig. 3 is the networking connection diagram of the many constant current sources of the utility model.
Fig. 4 is the circuit connection diagram of the utility model one constant current source.
Fig. 5 is the utility model Voltage Feedback schematic flow sheet.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 1, the utility model provides a kind of constant-current supply group network system based on universal serial bus, comprises the master controller of host computer and the slave controller of slave computer, and it is characterized in that: described host computer also comprises the human-computer interaction module that is connected with master controller; Described master controller is connected with the slave controller of slave computer through bus, and described slave controller is connected with geocoding module and at least one voltage controlled current source.Described voltage controlled current source comprises D/A conversion unit, constant flow module and the sampling feedback module of cascade successively; The input end of described D/A conversion unit is connected with the output terminal of slave controller, and the output terminal of described curtage sampling module is connected with slave controller.
What deserves to be mentioned is that above-mentioned sampling feedback module can be the current sample module, also can be the voltage sample module, or comprises electric current and voltage sample module simultaneously.This module can design as required.
Above-mentioned human-computer interaction module can be a touch-screen in the utility model, also can be button and LED or LCD demonstration etc., can import and set and the feedback data device shown.Described master controller is made up of microcontroller, storer, communication module, communication module wherein comprise with the communication of man-machine interface and with the communication module of slave computer.Described slave controller is made up of microcontroller and communication module, and communication module is used to realize the communication with host computer.Described D/A conversion unit can be integrated in slave controller inside, electric current and (or) voltage sample also can be integrated in slave controller inside.Described bus can be the RS485 bus, but is not limited thereto.
The user is provided with the load current value that each voltage controlled current source drives by man-machine interface, these data are passed to master controller by man-machine interface, handle, store the back by master controller and pass to the slave computer slave controller by the serial bus communication network, the slave controller handle is passed to D/A conversion unit (also being the DA converter) with the corresponding digital quantity of setting current value, DA converter output analog quantity control constant flow module is realized required load current.Electric current and load both end voltage by voltage-controlled constant flow module are taken a sample, give the current-voltage sampling module, and handle is sent into slave controller with electric current, the proportional voltage of voltage or frequency signal.Slave controller is passed to load current and load voltage digital signal the master controller of host computer by the serial bus communication network, master controller is used for showing through passing to man-machine interface after suitably handling again, finally realizes the load current setting of package unit and the Presentation Function of load actual current, voltage.
In the present embodiment, slave computer can be provided with many according to the capacity of address coding module, a kind of simple implementation method of geocoding module is to adopt toggle switch, each slave computer has unique geocoding, host computer is by geocoding identification addressing slave computer, when having many slave computers, as shown in Figure 3, want in the load of the voltage controlled current source of slave computer 2, to obtain the electric current of 500mA as the user, just on man-machine interface slave computer 2 being provided with 500(unit is mA), after master controller receives man-machine interface set geocoding 2 and numerical value 500, the 500 EPPROM storeies that store master controller into, geocoding 2 and numerical value 500 send by the serial bus communication network as instruction then, each slave computer all receives this two data, but the slave computer that the geocoding 2 that only receives is identical with self geocoding is just carried out this instruction, and the slave computer that is not inconsistent with self geocoding is the direct discard processing of receiving of data.After slave computer 2 is received the instruction that is complementary with self geocoding, convert proportional digital quantity to 500 to, as 640, send to D/A converter module, this module is exported proportional aanalogvoltage such as 2.4V, give voltage-controlled constant flow module, then in load, just obtained and the proportional 500mA electric current of this aanalogvoltage.
The microcontroller of master controller can adopt single-chip microcomputer (MCU), digital signal processor (DSP), PLC and ARM etc., can adopt the modbus agreement with the touch-screen communication.The microcontroller of slave controller can adopt such as single-chip microcomputers such as PIC16F876, its built-in AD modular converter can be used as the sampling of load current or voltage signal, if adopt the microcontroller that does not have built-in AD modular converter, then the curtage sampling module needs expansion separately.D/A converter module can adopt DAC6573, MAX5741 etc.Each slave computer has a voltage controlled current source at least, according to digital-to-analogue and analog-to-digital port number, a plurality of voltage controlled current sources can be arranged, as shown in Figure 2.
The utility model constant flow module is used for realizing given aanalogvoltage is converted to corresponding load current, can adopt the mode of operational amplifier control field effect transistor to realize, as shown in Figure 4, R1 is called sampling resistor among the figure, 3 pin of operational amplifier are by the output voltage of resistance R 3 access digital to analog converters, and the electric current that obtains in load is
Excessive or occur when unusual when pull-up resistor, constant flow module is not to be in constant current state probably, if do not have load current or Voltage Feedback this moment to host computer, host computer and operation user just can't know slave computer and whether be in normal operating conditions so.Therefore, the feedback of load actual current, voltage is very necessary.When circuit adopted the voltage sample module, this module of present embodiment comprised tested voltage sample circuit, signal conditioning circuit, voltage-frequency change-over circuit and the photoelectric isolating circuit of cascade successively; The output terminal of described photoelectric isolating circuit is connected with the input end of slave controller.As shown in Figure 4 and Figure 5, the sampling of load current can directly be carried out the AD conversion to the voltage at R1 two ends, and can obtain the actual current of load equally according to following formula.Because the drain voltage of Q1 is uncertain in the constant flow module, therefore the voltage sample at load two ends can adopt the method for voltage-frequency conversion (VFC) to realize, promptly entering slave controller through load voltage sampling, signal Processing, voltage-frequency conversion, photoelectricity after isolating, slave controller further pushes away to such an extent that be sampled magnitude of voltage by calculating pulsed frequency.
The above only is preferred embodiment of the present utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (6)
1. the constant-current supply group network system based on universal serial bus comprises the master controller of host computer and the slave controller of slave computer, and it is characterized in that: described host computer also comprises the human-computer interaction module that is connected with master controller; Described master controller is connected with the slave controller of slave computer through bus, and described slave controller is connected with geocoding module and at least one voltage controlled current source.
2. the constant-current supply group network system based on universal serial bus according to claim 1 is characterized in that: described voltage controlled current source comprises D/A conversion unit, constant flow module and the sampling feedback module of cascade successively; The input end of described D/A conversion unit is connected with the output terminal of slave controller, and the output terminal of described curtage sampling module is connected with slave controller.
3. the constant-current supply group network system based on universal serial bus according to claim 2 is characterized in that: described sampling feedback module is current sample module or voltage sample module.
4. the constant-current supply group network system based on universal serial bus according to claim 3 is characterized in that, described voltage sample module comprises tested voltage sample circuit, signal conditioning circuit, voltage-frequency change-over circuit and the photoelectric isolating circuit of cascade successively; The output terminal of described photoelectric isolating circuit is connected with the input end of slave controller.
5. the constant-current supply group network system based on universal serial bus according to claim 2 is characterized in that: described sampling feedback module is electric current and voltage sample module.
6. the constant-current supply group network system based on universal serial bus according to claim 1, it is characterized in that: described slave computer has a plurality of, and slave controller separately is connected with the master controller of described host computer through bus.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206611203U CN201909987U (en) | 2010-12-15 | 2010-12-15 | Constant-current supply networking system on basis of serial bus |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010206611203U CN201909987U (en) | 2010-12-15 | 2010-12-15 | Constant-current supply networking system on basis of serial bus |
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| CN201909987U true CN201909987U (en) | 2011-07-27 |
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| CN2010206611203U Expired - Fee Related CN201909987U (en) | 2010-12-15 | 2010-12-15 | Constant-current supply networking system on basis of serial bus |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558824A (en) * | 2013-11-05 | 2014-02-05 | 北京四方继保自动化股份有限公司 | Extensible synchronous control system on the basis of energy storage master-slave control structure |
| WO2016127952A1 (en) * | 2015-02-11 | 2016-08-18 | 深圳配天智能技术研究院有限公司 | Correction device and method for digital-to-analog converter, numeric control system, and numeric control machine tool |
| CN106773893A (en) * | 2016-11-11 | 2017-05-31 | 东南大学 | The program controlled constant current source circuit of the device for force feedback based on magnetic flow liquid |
| CN111740302A (en) * | 2020-06-12 | 2020-10-02 | 苏州中科全象智能科技有限公司 | Laser stable output system and method of line laser camera laser generator |
| CN115378250A (en) * | 2022-08-30 | 2022-11-22 | 济南大学 | Parameter-configurable multi-path bidirectional constant current source circuit and control method |
-
2010
- 2010-12-15 CN CN2010206611203U patent/CN201909987U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103558824A (en) * | 2013-11-05 | 2014-02-05 | 北京四方继保自动化股份有限公司 | Extensible synchronous control system on the basis of energy storage master-slave control structure |
| CN103558824B (en) * | 2013-11-05 | 2015-09-30 | 北京四方继保自动化股份有限公司 | A kind of easily extensible synchronous control system based on energy storage master & slave control structure |
| WO2016127952A1 (en) * | 2015-02-11 | 2016-08-18 | 深圳配天智能技术研究院有限公司 | Correction device and method for digital-to-analog converter, numeric control system, and numeric control machine tool |
| CN106773893A (en) * | 2016-11-11 | 2017-05-31 | 东南大学 | The program controlled constant current source circuit of the device for force feedback based on magnetic flow liquid |
| CN111740302A (en) * | 2020-06-12 | 2020-10-02 | 苏州中科全象智能科技有限公司 | Laser stable output system and method of line laser camera laser generator |
| CN115378250A (en) * | 2022-08-30 | 2022-11-22 | 济南大学 | Parameter-configurable multi-path bidirectional constant current source circuit and control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Fuzhou Xinyi generation Electromechanical Equipment Co. Ltd Assignor: Fuzhou University Contract record no.: 2014350000105 Denomination of utility model: Constant-current supply networking system on basis of serial bus Granted publication date: 20110727 License type: Common License Record date: 20141021 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20161215 |