CN103605071B - A kind of handset for communication type intelligence limit for tonnage isolating switch - Google Patents
A kind of handset for communication type intelligence limit for tonnage isolating switch Download PDFInfo
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- CN103605071B CN103605071B CN201310618485.6A CN201310618485A CN103605071B CN 103605071 B CN103605071 B CN 103605071B CN 201310618485 A CN201310618485 A CN 201310618485A CN 103605071 B CN103605071 B CN 103605071B
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- isolating switch
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Abstract
A kind of handset for communication type intelligence limit for tonnage isolating switch is provided with powerful main MCU and low power from MCU, and mode of operation commutation circuit is provided with between master and slave MCU, the dynamic perfromance of on-line checkingi intelligence limit for tonnage isolating switch is carried out by set DC-ac conversion circuit and mutual inductance circuit.This handset power consumption is little, and can extend working time and reach more than 10 times, energy-saving effect is remarkable; Due to the dynamic perfromance of energy on-line checkingi limit for tonnage isolating switch, thus, considerably improve convenience and the security of the detection of limit for tonnage isolating switch.
Description
Technical field
The present invention relates to the handheld terminal technical field of limit for tonnage isolating switch, particularly a kind of handset for communication type intelligence limit for tonnage isolating switch.
Background technology
Intelligence limit for tonnage System for Circuit Breaker body includes handset 1, intelligent limit for tonnage isolating switch 2 and PC 3, shown in Figure 1.Handset 1 is connected with the full duplex of intelligent limit for tonnage isolating switch 2 by UART9 asynchronous serial communication protocol realization, simultaneously by interface by the test circuit of handset 1 and intelligent limit for tonnage isolating switch 2 wired connection, the function such as read-write and test to intelligent limit for tonnage isolating switch 2 data can be realized.Handset 1 realizes, with the connection of PC 3, completing the functions such as the display of data, amendment, test by RS485 interface 8 communication protocol.
For adapting to market and user's request, for meeting the needs of on-the-spot test isolating switch 2 dynamic perfromance, robotization, intelligentized handheld device are arisen at the historic moment.Along with the development of computer technology, various hand-held terminal device emerges in large numbers market, is that core carries out sampling, process and exporting greatly mainly with certain single MCU.There is following weak point in the handset of this structure:
(1) existing handset product generally adopts single MCU mode to work, and many employing LCD or LED display translation, display screen exists the large problem of power consumption.Under the state that display screen is closed, MCU is work as usual, because single MCU power is large, causes the capacity requirement of handset battery high, and battery altering is frequent, adds cost.
(2) existing handset product mainly parameter display read, not direct function of being tested limit for tonnage isolating switch by handset, the state of limit for tonnage isolating switch will be obtained by other on-line testing methods, relative complex in program.
Summary of the invention
The object of the present invention is to provide a kind of for communication type intelligence limit for tonnage isolating switch handset, it can the state of on-line checkingi limit for tonnage isolating switch, and under handset display screen closed condition, can turn and controlled from MCU by low power, thus greatly reduce the power consumption of handset.
Technical solution proposed by the invention is such:
A kind of handset for communication type intelligence limit for tonnage isolating switch, comprise the main MCU4 of watt level, keyboard 6, LCD display 7, RS485 remote communication interface 8, UART interface 9, main MCU4 is connected with limit for tonnage isolating switch 2 by UART interface 9, handset 1 carries out data communication by asynchronous transmission and limit for tonnage isolating switch 2, be provided with milliwatt level from MCU5, between MCU5, be provided with mode of operation commutation circuit in the main MCU4 of watt level and milliwatt level; Also be provided with DC-ac conversion circuit 10 and mutual inductance circuit 11, the direct supply of peripheral hardware is transformed into alternating-current detection signal by DC-ac conversion circuit 10 and mutual inductance circuit 11, by the test circuit of TEST interface wired connection handset 1 and the sampling channel of limit for tonnage isolating switch 2, detect the dynamic perfromance of limit for tonnage isolating switch 2.
Described mode of operation commutation circuit is by triode, 1st diode D2, 2nd diode D3, resistance R, booster circuit 12 and mu balanced circuit 13 form, transistor emitter is connected with from MCU5 output terminal, the negative electrode of the 1st diode D2 is connected with the I/O mouth from MCU5, the anode of the 1st diode D2 is connected with resistance R one end with the anode of the 2nd diode D3, the resistance R other end is connected with transistor base, the negative electrode of the 2 two pole, pole pipe D3 is connected with the I/O mouth of main MCU4, the collector of triode is by booster circuit 12, mu balanced circuit 13 is connected with the input end of main MCU4, wherein, triode is PNP type triode.
Compared with prior art, the present invention has following remarkable result:
(1) handset being used for communication type intelligence limit for tonnage isolating switch due to this adopts two MCU pattern, and main MCU power is comparatively large, little from MCU power, is provided with mode of operation commutation circuit between master and slave MCU.So, between non-detection period, can shut down to main MCU, turn and work by from MCU.And be far longer than detection time the non-detection time of handset, therefore, it is possible to greatly reduce the power consumption of handset, reach more than 10 times the service time that can extend handset, energy-saving effect is remarkable.
(2) can the dynamic perfromance of on-line checkingi intelligence limit for tonnage isolating switch by the DC-ac conversion circuit of handset and mutual inductance circuit, compare and traditional add that the method for power detecting is more simple at limit for tonnage isolating switch two ends, and relevant featuring parameters can be shown on handset, thus, considerably improve convenience and the security of the detection of limit for tonnage isolating switch.
Accompanying drawing explanation
Fig. 1 is the theory structure block diagram of existing intelligent limit for tonnage System for Circuit Breaker body.
Fig. 2 is the schematic block circuit diagram of the handset for communication type intelligence limit for tonnage isolating switch of one embodiment of the invention.
Fig. 3 is mode of operation commutation circuit figure set between the master and slave MCU of the handset for communication type intelligence limit for tonnage isolating switch shown in Fig. 2.
Embodiment
By embodiment below, the present invention is further elaborated.
Shown in Fig. 2, Fig. 3, a kind of handset for communication type intelligence limit for tonnage isolating switch by main MCU4, to show 7 from MCU5, keyboard 6, LCD, RS485 remote communication interface 8, UART interface 9, DC-ac conversion circuit 10 and mutual inductance circuit 11 form.Handset 1 adopts two MCU pattern, and main MCU4 is a watt class large power MCU, is milliwatt level miniwatt MCU from MCU5, is provided with mode of operation commutation circuit at main MCU4 and between MCU5.Main MCU4 is the core of handset 1, and it is connected with limit for tonnage isolating switch 2 by UART interface 9, and handset 1 carries out data communication by asynchronous transmission and limit for tonnage isolating switch 2.Handset 1 is also attached to direct supply simultaneously, this direct supply is transformed to alternating-current detection signal by DC-ac conversion circuit 10 and mutual inductance circuit 11, by the test circuit of TEST interface wired connection handset 1 and the sampling channel of limit for tonnage isolating switch 2, detect the dynamic perfromance of intelligent limit for tonnage isolating switch 2.
Described mode of operation commutation circuit is by triode, 1st diode D2, 2nd diode D3, resistance R, booster circuit 12 and mu balanced circuit 13 form, transistor emitter is connected with from MCU5 output terminal, the negative electrode of the 1st diode D2 is connected with the I/O mouth from MCU5, the anode of the 1st diode D2 is connected with resistance R one end with the anode of the 2nd diode D3, the resistance R other end is connected with transistor base, the negative electrode of the 2nd diode D3 is connected with the I/O mouth of main MCU4, the collector of triode is by booster circuit 12, mu balanced circuit 13 is connected with the input end of main MCU4, wherein, triode is PNP type triode.
When needs carry out parameter reading and writing to limit for tonnage isolating switch 2 and detect, the handset 1 being used for communication type intelligence limit for tonnage isolating switch by this has come.Non-detection period, be save power consumption, turn off LCD display 7, the high-power watt of main MCU4 of level of handset 1 li quits work, and miniwatt milliwatt level works from MCU5.Specific works process is as follows: between non-detection period, press keyboard 6 " energy-saving mode " button on handset 1 panel, pass through procedure operation, export high-level control signal to the I/O mouth of main MCU4, output low level control signal to the I/O mouth from MCU5, now, 1st diode D2 conducting, 2nd diode D3 ends, and from MCU5 work, main MCU4 quits work; Between detection period, press " mode of operation " button of the keyboard 6 on handset 1 panel, pass through procedure operation, output low level control signal is to the I/O mouth of main MCU4,2nd diode D3 conducting, the collector conducting of PNP triode, gives main MCU4 work power supply by booster circuit 12, mu balanced circuit 13, main MCU4 work.Because handset 1 is regular working, non-detection time is far longer than detection time, and the power consumption of whole handset 1 just can reduce greatly.When detecting the dynamic perfromance of limit for tonnage isolating switch 2, it is then keyboard 6 " test " button by handset 1 panel, startup DC-ac conversion circuit 10 and mutual inductance circuit 11 have come, and described mutual inductance circuit 11 is connected with the sampling channel of filtration module with limit for tonnage isolating switch 2 by signal amplification.Corresponding dynamic characteristic parameter is transferred to handset 1 by UART interface 9, and LCD display 7 shows.The parameter that all handsets 1 detect can be shown at host computer PC 3 by RS485 remote communication interface 8, and same PC 3 also can be modified, be deleted by the parameter of RS485 interface 8 pairs of handsets 1.
Claims (2)
1. the handset for communication type intelligence limit for tonnage isolating switch, comprise the main MCU(4 of watt level), keyboard (6), LCD show (7), RS485 remote communication interface (8), UART interface (9), main MCU(4) be connected with limit for tonnage isolating switch (2) by UART interface (9), handset (1) carries out data communication by asynchronous transmission and limit for tonnage isolating switch (2), it is characterized in that: be provided with milliwatt level from MCU(5), the main MCU(4 in watt level) and milliwatt level from MCU(5) between be provided with mode of operation commutation circuit; Handset (1) is also provided with DC-ac conversion circuit (10) and mutual inductance circuit (11), the direct supply of peripheral hardware is transformed into alternating-current detection signal by DC-ac conversion circuit (10) and mutual inductance circuit (11), by the test circuit of TEST interface wired connection handset (1) and the sampling channel of limit for tonnage isolating switch (2), detect the dynamic perfromance of limit for tonnage isolating switch (2).
2. the handset for communication type intelligence limit for tonnage isolating switch according to claim 1, it is characterized in that: described mode of operation commutation circuit is by triode, 1st diode D2, 2nd diode D3, resistance R, booster circuit (12) and mu balanced circuit (13) composition, transistor emitter with from MCU(5) output terminal is connected, the negative electrode of the 1st diode D2 with from MCU(5) I/O mouth be connected, the anode of the 1st diode D2 is connected with resistance R one end with the anode of the 2nd diode D3, the resistance R other end is connected with transistor base, negative electrode and the main MCU(4 of the 2nd diode D3) I/O mouth be connected, the collector of triode is by booster circuit (12), mu balanced circuit (13) and main MCU(4) input end be connected, wherein, triode is PNP type triode.
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| CN103605071B true CN103605071B (en) | 2016-04-20 |
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| CN104485659B (en) * | 2014-11-10 | 2016-08-24 | 广东佛电电器有限公司 | Limit for tonnage breaker at times |
| CN105119373A (en) * | 2015-09-01 | 2015-12-02 | 广东佛电电器有限公司 | Intelligent distribution monitoring system terminal based on wireless transmission ad-hoc network |
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| US6614231B2 (en) * | 2001-08-21 | 2003-09-02 | Maxwell Technologies, Inc. | High efficiency electronic load |
| CN101802547B (en) * | 2007-07-27 | 2016-10-05 | 实耐宝公司 | There is wheel alignment head and the system of APM |
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| CN202886555U (en) * | 2011-12-08 | 2013-04-17 | 天津市职业大学 | All-digital double-station moulded case circuit breaker quality detection device |
| CN102520346A (en) * | 2011-12-13 | 2012-06-27 | 东南大学 | Permanent magnetic vacuum circuit breaker online monitoring and diagnosing device |
| CN203595787U (en) * | 2013-11-29 | 2014-05-14 | 广东佛电电器有限公司 | Handheld device applied to communication type intelligent load-limiting breaker |
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