CN204190350U - A kind of Intelligent integrated prepayment switch - Google Patents
A kind of Intelligent integrated prepayment switch Download PDFInfo
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- CN204190350U CN204190350U CN201420544467.8U CN201420544467U CN204190350U CN 204190350 U CN204190350 U CN 204190350U CN 201420544467 U CN201420544467 U CN 201420544467U CN 204190350 U CN204190350 U CN 204190350U
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Abstract
The utility model discloses a kind of Intelligent integrated prepayment switch, the display circuit, current sensor, zero-sequence transformer, communicating circuit and the control circuit that comprise power-supplying circuit, microcontroller and be electrically connected with microcontroller respectively; Described microcontroller is single-chip microcomputer PIC18F; Described communicating circuit is RS485 communicating circuit, comprises RS-485 transponder chip, and RS-485 transponder chip is connected with microcontroller by serial communication interface.Intelligent integrated prepayment switch disclosed in the utility model; action control is carried out by microcontroller and display circuit, current sensor, zero sequence transducer, control circuit; be integrated with the several functions such as short circuit, overcurrent, overload, overvoltage/undervoltage, earth leakage protective; can also be connected with computer by communicating circuit; realize the Long-distance Control of staff, volume be little, reliability is high, easy to use.
Description
Technical field
The utility model relates to a kind of distribution technique field, particularly relates to a kind of Intelligent integrated prepayment switch.
Background technology
At present, reclosing system is widely used in power supply unit, extends to payment system.The timely separating brake of reclosing and close a floodgate and effectively can carry out protective circuit security of operation, but need manually-operated reclosing system, and need staff to carry out manual separating brake and combined floodgate, operate safety and convenient not.
The principle of Intelligent reclosing improves on the basis of earth leakage circuit-breaker; after earth leakage circuit-breaker action, carry out automatic reclosing through certain time delay, restore electricity; instead of the manually-operated reclosing system of original needs, ensure that the normal operation of power consumption equipment.But this series products, also needs the cooperation of some circuit breakers, contactor, can cause certain unreliability.
Existing reclosing system has been cut-off from power supply-distribution system at first and closed regular link and the effect of cut-offfing faulty line develop into the measurement and the effect such as protection, warning thereof that realize various power consumption parameter.But the measurement result of reclosing can only show in this locality at present, and when operating personnel need to check and approve power consumption parameter, must arrive the place at this reclosing place, check and approve, inconvenient operation, waste of manpower, reliability is not high.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of Intelligent integrated prepayment switch, low and can not remotely-controlled problem to solve existing reclosing reliability.
For solving the problems of the technologies described above, technical solution adopted in the utility model is:
A kind of Intelligent integrated prepayment switch, the display circuit, current sensor, zero-sequence transformer, communicating circuit, the control circuit that comprise power-supplying circuit, microcontroller and be electrically connected with microcontroller respectively, power-supplying circuit is connected with microcontroller, display circuit, current sensor, zero-sequence transformer, communicating circuit, control circuit respectively and powers; Described microcontroller is single-chip microcomputer PIC18F;
Described display circuit comprises charactron, current-limiting resistance and four triodes; Described charactron is connected by the output port of current-limiting resistance with described microcontroller;
Described current sensor comprises and carries out single-phase three transducers be connected respectively with three phase mains; Sensor output voltage signal is to the second analog-to-digital conversion mouth of microcontroller, the 3rd analog-to-digital conversion mouth and the 4th analog-to-digital conversion mouth;
Described zero-sequence transformer is connected respectively with three phase mains, the output of zero-sequence transformer is connected with the 5th analog-to-digital conversion mouth of microcontroller, and the electric leakage signal that zero-sequence transformer detects is converted to voltage signal by resistance R29 and after amplifying, sends into the analog-to-digital conversion mouth of microcontroller;
Described communicating circuit is RS485 communicating circuit, and communicating circuit comprises RS-485 transponder chip, and described RS-485 transponder chip is connected with microcontroller by serial communication interface;
Described control circuit comprises opening circuit and combined floodgate circuit; The sub-gate signal of described opening circuit is from the 4th output port of microcontroller, and sub-gate signal is connected to the release action of relay K 2 control relay through resistance, triode after amplifying;
The switching signal of described combined floodgate circuit is from the 5th output port of microcontroller, and switching signal is connected to relay K 1 and combined floodgate motor through resistance, triode after amplifying; From the 5th output port of microcontroller.
Owing to adopting technique scheme, the beneficial effect that the utility model produces is:
Intelligent integrated prepayment switch disclosed in the utility model; action control is carried out by microcontroller and display circuit, current sensor, zero sequence transducer, control circuit; be integrated with the several functions such as short circuit, overcurrent, overload, overvoltage/undervoltage, earth leakage protective; can also be connected with computer by communicating circuit; realize the Long-distance Control of staff, volume be little, reliability is high, easy to use.The electric brake meeting Automatic-falling when expense is not enough, when making electric brake closed power transmission automatically after payment of fees.
Accompanying drawing explanation
Fig. 1 is the anatomical connectivity schematic diagram of Intelligent integrated prepayment switch disclosed in the utility model;
Fig. 2 is the structural representation of the microcontroller in the prepayment of Intelligent integrated shown in Fig. 1 switch;
Fig. 3 is the structural representation of the display circuit in the prepayment of Intelligent integrated shown in Fig. 1 switch;
Fig. 4 is the current sensor in the prepayment of Intelligent integrated shown in Fig. 1 switch and zero-sequence transformer structural representation;
Fig. 5 is the structural representation of the power-supplying circuit in the prepayment of Intelligent integrated shown in Fig. 1 switch;
Fig. 6 is the structural representation of the communicating circuit in the prepayment of Intelligent integrated shown in Fig. 1 switch;
Fig. 7 is the structural representation of the opening circuit in the prepayment of Intelligent integrated shown in Fig. 1 switch;
Fig. 8 is the structural representation of the combined floodgate circuit in the prepayment of Intelligent integrated shown in Fig. 1 switch.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further details:
Fig. 1 shows the syndeton schematic diagram of Intelligent integrated prepayment switch disclosed in the utility model, comprising: microcontroller, display circuit, current sensor, zero-sequence transformer, power-supplying circuit, communicating circuit, control circuit; Microcontroller is connected with display circuit, current sensor, zero-sequence transformer, communicating circuit, control circuit respectively, and power-supplying circuit is also connected with display circuit, current sensor, zero-sequence transformer, communicating circuit, control circuit respectively and is that they are powered; Described microcontroller is single-chip microcomputer PIC18F; Described communicating circuit is specially RS485 communicating circuit.
Whether zero-sequence transformer detection line leaks electricity, and detection of electrical leakage signal is sent into microcontroller; The three-phase current of current sensor detection line, and three-phase current signal is sent into microcontroller; Microcontroller carries out digitized processing to electric leakage signal, three-phase current signal, controls control circuit and carries out protection act, and shown by display circuit, can also carry out communication by RS485 communicating circuit and computer after calculating by analysis.
Fig. 2 is the structure chart of the microcontroller of the prepayment of Intelligent integrated shown in Fig. 1 switch, and as shown in Figure 2, microcontroller U8 is single-chip microcomputer PIC18F, and electric capacity C11 meets the 6th pin VCAP of U8, is the filtering of microcontroller U8 core power; Electric capacity C10 connects the resetting pin (NRST) of U8, for U8 provides reset signal.
Fig. 3 is the structure chart of the display circuit of the prepayment of Intelligent integrated shown in Fig. 1 switch, as shown in Figure 3, display circuit is by charactron U1, resistance R5-R12, R7, R8, R9, R15, triode T1, T2, T3, T4 are formed, and in Fig. 2, output port PD0 ~ PD4, the PE0 ~ PE2 formation section of microcontroller U8 selects signal to be connected with A, B, C, D, E, F, G, DP section pin of charactron U1 by current-limiting resistance R5-R12; Triode T1, T2, T3, T4 are also connected with the VDD interface of microcontroller U8 respectively.
The current sensor of Fig. 4 for the prepayment of Intelligent integrated shown in Fig. 1 switch and the structure chart of zero-sequence transformer, as shown in Figure 4, current sensor comprises three transducers CT2, CT3, CT4, CT2, CT3, CT4 are each passed through UC, UB, UA three phase mains, CT2, CT3, CT4 export and are converted to respectively by resistance R51, R52, R53 the second analog-to-digital conversion mouth PB2, the 3rd analog-to-digital conversion mouth PB3 and the 4th analog-to-digital conversion mouth PB4 that voltage signal sends into the microcontroller U8 in Fig. 2, are converted to digital signal.Microcontroller U8 performs protection act by control circuit after being calculated by Digital Signal Analysis.
Zero-sequence transformer is made up of zero-sequence transformer CT1, CT1 is through UA, UB, UC three phase mains, when CT1 induces the electric leakage signal of circuit, this electric leakage signal is converted to voltage signal by resistance R29, resistance R27, R32, R25, R30, R31, electric capacity C6 form amplifying circuit, send into the 5th analog-to-digital conversion mouth PB5 of the microcontroller U8 in Fig. 2 after being amplified by electric leakage signal, electric leakage signal is converted to digital signal.
Fig. 5 is the structure chart of the power-supplying circuit of the prepayment of Intelligent integrated shown in Fig. 1 switch, and as shown in Figure 5, power-supplying circuit is made up of transformer T10, diode D1, D2, D3, D4, electrochemical capacitor C1, C3, C4, C7, three terminal regulator U3, U4.Transformer T10 is elementary connects AC power UA phase, UB phase, secondary by diode D1, D2, D3, D4 rectification, form positive and negative 12V power supply after electrochemical capacitor C1, C3 filtering, positive and negative 12V power supply becomes positive and negative 5V power supply to be each circuit supply through three terminal regulator U3, U4, electrochemical capacitor C4, C7 voltage stabilizing.
Fig. 6 is the structure chart of the communicating circuit of the prepayment of Intelligent integrated shown in Fig. 1 switch, as shown in Figure 6, described communicating circuit is specially RS485 communicating circuit, RS485 communicating circuit can be MAX485 by the integrated concrete model of RS-485 transponder chip U6() form, port RX, TX, the PD7 of microcontroller U8 in the receiving terminal RX of U6, TX, 485CTL and Fig. 2 connect, microcontroller U8 can carry out communication by RS485 communicating circuit and computer, realizes the Long-distance Control of Intelligent integrated prepayment switch.RX, TX of U6 are serial communication interface, and 485CTL effect switches to receive transmission state.
In the utility model, the control circuit of the prepayment of Intelligent integrated shown in Fig. 1 switch comprises opening circuit and combined floodgate circuit.
As shown in Figure 7, opening circuit is made up of resistance R38, R39, R40, R76, triode T6, T7, relay K 2, release L1 described opening circuit; Sub-gate signal OUT_OFF is connected by the 4th output port PA4 of the microcontroller U8 shown in R38 and Fig. 2.When needs separating brake, OUT_OFF is high level, triode T6, T7 conducting, relay K 2 line bag obtains 24V power supply, relay K 2 adhesive, release L1 bis-end obtains exchanging UA, UB two-phase power supply, and release action promotes mechanism's separating brake of Intelligent integrated prepayment switch internal.
Described combined floodgate circuit as shown in Figure 8, is made up of resistance R43, R61, R41, R42, triode T8, T9, relay K 1, motor M 1; Switching signal OUT_ON is connected by the 5th output port PA5 of the microcontroller U8 in R43 and Fig. 2.When needs close a floodgate, OUT_ON is high level, triode T8, T9 conducting, relay K 1 line bag obtains 24V power supply, relay K 1 adhesive, motor M 1 two end obtains exchanging UA, UB two-phase power supply, and motor M 1 is rotated the mechanism promoting Intelligent integrated prepayment switch internal and closed a floodgate.
Claims (1)
1. an Intelligent integrated prepayment switch, it is characterized in that: the display circuit, current sensor, zero-sequence transformer, communicating circuit, the control circuit that comprise power-supplying circuit, microcontroller and be electrically connected with microcontroller respectively, power-supplying circuit is connected with microcontroller, display circuit, current sensor, zero-sequence transformer, communicating circuit, control circuit respectively and powers; Described microcontroller is single-chip microcomputer PIC18F;
Described display circuit comprises charactron, current-limiting resistance and four triodes; Described charactron is connected by the output port of current-limiting resistance with described microcontroller;
Described current sensor comprises and carries out single-phase three transducers be connected respectively with three phase mains; Sensor output voltage signal is to the second analog-to-digital conversion mouth of microcontroller, the 3rd analog-to-digital conversion mouth and the 4th analog-to-digital conversion mouth;
Described zero-sequence transformer is connected respectively with three phase mains, the output of zero-sequence transformer is connected with the 5th analog-to-digital conversion mouth of microcontroller, and the electric leakage signal that zero-sequence transformer detects is converted to voltage signal by resistance R29 and after amplifying, sends into the analog-to-digital conversion mouth of microcontroller;
Described communicating circuit is RS485 communicating circuit, and communicating circuit comprises RS-485 transponder chip, and described RS-485 transponder chip is connected with microcontroller by serial communication interface;
Described control circuit comprises opening circuit and combined floodgate circuit; The sub-gate signal of described opening circuit is from the 4th output port of microcontroller, and sub-gate signal is connected to the release action of relay K 2 control relay through resistance, triode after amplifying;
The switching signal of described combined floodgate circuit is from the 5th output port of microcontroller, and switching signal is connected to relay K 1 and combined floodgate motor through resistance, triode after amplifying; From the 5th output port of microcontroller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420544467.8U CN204190350U (en) | 2014-09-22 | 2014-09-22 | A kind of Intelligent integrated prepayment switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420544467.8U CN204190350U (en) | 2014-09-22 | 2014-09-22 | A kind of Intelligent integrated prepayment switch |
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| Publication Number | Publication Date |
|---|---|
| CN204190350U true CN204190350U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420544467.8U Expired - Fee Related CN204190350U (en) | 2014-09-22 | 2014-09-22 | A kind of Intelligent integrated prepayment switch |
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| Country | Link |
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| CN (1) | CN204190350U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242225A (en) * | 2014-09-22 | 2014-12-24 | 国家电网公司 | Intelligent integrated prepayment switch |
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2014
- 2014-09-22 CN CN201420544467.8U patent/CN204190350U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242225A (en) * | 2014-09-22 | 2014-12-24 | 国家电网公司 | Intelligent integrated prepayment switch |
| CN104242225B (en) * | 2014-09-22 | 2017-05-24 | 国家电网公司 | Intelligent integrated prepayment switch |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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: 20150304 |