CN204117347U - The device that a kind of on-the-spot ammeter based on mobile phone and electric power terminal are safeguarded - Google Patents
The device that a kind of on-the-spot ammeter based on mobile phone and electric power terminal are safeguarded Download PDFInfo
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- CN204117347U CN204117347U CN201420222844.6U CN201420222844U CN204117347U CN 204117347 U CN204117347 U CN 204117347U CN 201420222844 U CN201420222844 U CN 201420222844U CN 204117347 U CN204117347 U CN 204117347U
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Abstract
The device that the utility model provides a kind of on-the-spot ammeter based on mobile phone and electric power terminal to safeguard, comprise RS485 communication module and modulation infrared communication module, described RS485 communication module is connected with serial ports-usb communication change-over circuit respectively by an AND circuit with modulation infrared communication module, this device simplifies circuit structure, utilize palm PC to carry out copy reading and optimum configurations to intelligent electric meter and electric power terminal to change into mobile phone can be utilized to carry out copy reading and optimum configurations to intelligent electric meter and electric power terminal by existing, greatly reduce cost, also greatly reduce the operation easier of maintainer simultaneously, thus increase work efficiency.
Description
Technical field
The utility model relates to a kind of intelligent electric meter and electric power terminal area of maintenance, particularly based on the device that on-the-spot ammeter and the electric power terminal of mobile phone are safeguarded.
Background technology
Along with the application of national grid intelligent electric meter and electric power terminal is more and more extensive, thus the maintenance of the intelligent electric meter at scene and electric power terminal also gets more and more, the maintenance of existing intelligent electric meter and electric power terminal adopts palm PC mostly, by the communication mode such as infrared ray and RS485, realize the copy reading to intelligent electric meter and electric power terminal and optimum configurations, but it is higher to utilize palm PC to carry out the maintenance cost of intelligent electric meter and electric power terminal, and it is higher to utilize palm PC to carry out the operation easier of the maintenance of intelligent electric meter and electric power terminal at present, thus reduce work efficiency, be unfavorable for the sustainable development in intelligent electric meter field.
Utility model content
In view of this, the technical problems to be solved in the utility model is to provide a kind of low cost, easy to use and makes software kit maintenance upgrade simple, easily meets the device that the on-the-spot ammeter based on mobile phone of all types of user demand and electric power terminal are safeguarded.
For solving the problems of the technologies described above, the technical scheme that the utility model provides is: the device that a kind of on-the-spot ammeter based on mobile phone and electric power terminal are safeguarded, comprise RS485 communication module and modulation infrared communication module, described RS485 communication module is connected with serial ports-usb communication change-over circuit respectively by an AND circuit with modulation infrared communication module.
Realize the USB interface signal of mobile phone to change into rs 232 serial interface signal by serial ports-usb communication change-over circuit, and by serial communication change into modulated red external signal and RS485 signal and intelligent electric meter information of carrying out transmit with receive, realize by intelligent terminal the copy reading of intelligent electric meter and setting.
Described AND circuit comprises two diode D1, a D2 and pull-up resistor R3, be connected to the receiving end of serial ports-usb communication change-over circuit with one end of pull-up resistor R3 after the anode of described diode D1, D2 is connected, the negative electrode of described diode D1 is connected with RS485 communication module transmitting terminal, and the negative electrode of described diode D2 is connected with the transmitting terminal of modulation infrared communication module.
The voltage that described serial ports-usb communication change-over circuit comprises to be provided mobile phone carries out changing and the power circuit of voltage stabilizing.
Described serial ports-usb communication change-over circuit turns serial port chip U1 by USB and the USB interface signal of mobile phone is converted to rs 232 serial interface signal.
Described USB is turned between serial port chip U1 with mobile phone USB interface and is connected by usb circuit.
Described RS485 communication module comprises a phase inverter U2, also comprise the signal from serial ports-usb communication change-over circuit by the control chip U3 of the laggard row relax of described phase inverter U2, described inverter input is connected with the transmission data input pin DI of control chip U3, the output terminal of phase inverter U2 is simultaneously with the reception Enable Pin RE of control chip U3 with send Enable Pin DE and be connected, a two-way voltage stabilizing diode V1 in parallel between voltage end A, B of described control chip U3, wherein voltage end A connects a pull-up resistor R4, and voltage end B connects a pull down resistor R5.
Described modulation infrared communication module comprises infrared modulation frequency signal circuit, modulated red transtation mission circuit and the outer communications reception circuit of modulated red outward of the modulation signal providing a stabilized frequency, and described infrared modulation frequency signal circuit is connected with the outer transtation mission circuit of modulated red by a resistance R11.
Described in the outer communications reception circuit of described modulated red, the outer communications reception circuit of modulated red comprises an infrared remote receiver, receive the modulation signal of the stabilized frequency from the outer transtation mission circuit of modulated red, two electric capacity C8 and C9 in parallel between the power end of described infrared remote receiver and ground end, one end of electric capacity C8 with C9 of described parallel connection is connected power supply by a resistance R6, other end ground connection.
Described infrared modulation frequency signal circuit comprises an oscillatory circuit chip U4, the high-triggering end TH of described oscillatory circuit chip U4, low triggering end TL connects the anode of a diode D3 and the negative electrode of another diode D4 after connecting respectively, simultaneously by a capacity earth, the negative electrode of described diode D3 is connected power supply by resistance R7 with R9, the anode of diode D4 connects power supply by resistance R9, be connected to the discharge end DIS of oscillatory circuit chip U4 simultaneously, the voltage controling end CV of oscillatory circuit chip U4 is by an electric capacity C12 ground connection, oscillation frequency output terminal OUT connects the outer transtation mission circuit of modulated red.
The outer transtation mission circuit of described modulated red comprises a two triode Q1 and Q2 and infrared transmitting tube D5, the base stage of described triode Q2 connects the transmitting terminal that USB turns serial port chip U1, collector is connected with the emitter of triode Q1, connect a resistance R12 between its emitter and base stage, the emitter of triode Q2 connects power supply simultaneously; The collector of described triode Q1 connects infrared transmitting tube D5, current-limiting resistance R13 successively to ground, base stage access modulation frequency signal.
Compared with prior art, the utility model tool has the following advantages:
The device that the utility model provides a kind of on-the-spot ammeter based on mobile phone and electric power terminal to safeguard, by the structure that RS485 communication module is connected with serial ports-usb communication change-over circuit respectively with modulation infrared communication module, simplify circuit structure, utilize palm PC to carry out copy reading and optimum configurations to intelligent electric meter and electric power terminal to change into and utilize mobile phone to carry out copy reading and optimum configurations to intelligent electric meter and electric power terminal by existing, greatly reduce cost, also greatly reduce the operation easier of maintainer simultaneously, thus increase work efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model one-piece construction schematic diagram;
Fig. 2 is the utility model serial ports-usb communication converting circuit structure schematic diagram;
Fig. 3 is the utility model AND circuit structural representation;
Fig. 4 is the utility model RS485 communication module structural representation;
Fig. 5 is the utility model infrared modulation frequency signal electrical block diagram;
Fig. 6 is that the utility model modulated red outgoing send electrical block diagram;
Fig. 7 is the outer communications reception electrical block diagram of the utility model modulated red.
Embodiment
The utility model to be explained in further detail below in conjunction with accompanying drawing and embodiment for the ease of it will be appreciated by those skilled in the art that.
Embodiment
As shown in Figure 1, the device that a kind of on-the-spot ammeter based on mobile phone and electric power terminal are safeguarded, comprise RS485 communication module, modulation infrared communication module and serial ports-usb communication change-over circuit, described RS485 communication module is connected with serial ports-usb communication change-over circuit respectively by an AND circuit with modulation infrared communication module.
Realize the USB interface of mobile phone to change into serial ports by serial ports-usb communication change-over circuit, and by serial communication change into modulated red external signal and RS485 signal and intelligent electric meter information of carrying out transmit with receive, realize by intelligent terminal the copy reading of intelligent electric meter and setting.
As shown in Figure 3, described AND circuit comprises two diode D1, a D2 and pull-up resistor R3, be connected to the receiving end of serial ports-usb communication change-over circuit with one end of pull-up resistor R3 after the anode of described diode D1, D2 is connected, the negative electrode of described diode D1 is connected with RS485 communication module transmitting terminal, and the negative electrode of described diode D2 is connected with the transmitting terminal of modulation infrared communication module.
As shown in Figure 2, the voltage that described serial ports-usb communication change-over circuit comprises to be provided mobile phone carries out changing and the power circuit of voltage stabilizing, this power circuit is provided with the voltage voltage stabilizing that provided by the mobile phone chip UD1 to 3.3V, and the voltage of generation is RS485 communication module, modulation infrared communication module and serial ports-usb communication change-over circuit provide required voltage.Described serial ports-usb communication change-over circuit turns serial port chip FT311D by USB and transfers the USB interface of mobile phone to serial ports, this chip support very easy to use USB OTG, exempts from dress and drives, make the simple high automation of application software, reduce the requirement to maintainer.
Wherein, the USBDM pin of FT311D is connected with USB-TOG interface circuit respectively by two resistance with USBDP pin, and between the XTIN pin of FT311D and XOUT pin, the two ends of a crystal oscillator Y1, crystal oscillator Y1 in parallel connect ground connection after electric capacity C13 and C14 respectively.
As shown in Figure 4, described RS485 communication module comprises a phase inverter U2, also comprise a control chip U3, U3 model is MAX13085, described phase inverter U2 input end is connected with the transmission data input pin DI of control chip U3, the output terminal of phase inverter U2 is simultaneously with the reception Enable Pin RE of control chip U3 with send Enable Pin DE and be connected, a two-way voltage stabilizing diode V1 in parallel between voltage end A, B of described MAX13085 chip, wherein voltage end A connects a pull-up resistor R4, and voltage end B connects a pull down resistor R5.
As shown in Figure 1, described modulation infrared communication module comprises infrared modulation frequency signal circuit, modulated red transtation mission circuit and the outer communications reception circuit of modulated red outward of the modulation signal providing a stabilized frequency, and described infrared modulation frequency signal circuit is connected with the outer transtation mission circuit of modulated red by a resistance R11.
As shown in Figure 5, described infrared modulation frequency signal circuit forms multi-resonant oscillating circuit by a NE555 chip and peripheral circuit, and to produce a stable frequency be the modulation signal of 38kHz, the anode of a diode D3 and the negative electrode of another diode D4 is connected respectively after the high-triggering end TH of NE555 chip is connected with low triggering end TL, simultaneously by a capacity earth, the negative electrode of diode D3 is connected power supply by resistance R7 with R9, the anode of diode D4 connects power supply by resistance R9, connect discharge end DIS simultaneously, the voltage controling end CV of NE555 chip is by an electric capacity C12 ground connection.
As shown in Figure 6, the outer transtation mission circuit of described modulated red comprises two L8550QT1G PNP triodes and infrared transmitting tube D5 forms 38kHz frequency signal sending controling circuit, by a resistance R13 ground connection after the anode of the collector connection infrared transmitting tube D5 of described triode Q1, the collector of described triode Q2 is connected with the emitter of triode Q1, connect a resistance R12 between its emitter and base stage, the emitter of triode Q2 connects 3.3V power supply simultaneously by an electric capacity C10 ground connection.
It is the infrared remote receiver of the modulation signal of 38kHz that the outer communications reception circuit of described modulated red comprises a reception from the stable frequency of transtation mission circuit outside modulated red, model is HM338R, two electric capacity C8 and C9 in parallel between the power end of described infrared remote receiver and ground end, one end of electric capacity C8 with C9 of described parallel connection is connected power supply by a resistance R6, other end ground connection.
During circuit working, the voltage voltage stabilizing that mobile phone provides by chip UD1 is supplied to RS485 communication module, modulation infrared communication module and serial ports-usb communication change-over circuit to 3.3V.
The signal that mobile phone sends transfers usb signal to rs 232 serial interface signal TXD through serial ports-usb communication change-over circuit again by USB, is transferred to RS485 communication module and modulation infrared communication module by the IOBUSO_TX pin of FT311D chip.If rs 232 serial interface signal TXD is high level, rs 232 serial interface signal TXD becomes low level through phase inverter SN74AHC1G14, the now voltage end A of MAX13085 chip, it is high-impedance state between B, signal makes voltage end A export high level by pull-up resistor R4, signal makes voltage end B output low level by pull down resistor R5, and the signal logic like this on RS485 order wire is just 1.When being sent as low level, rs 232 serial interface signal TXD becomes high level through reverser SN74AHC1G14, now MAX13085 chip becomes transmission state, signal input pin due to MAX13085 chip is low level, therefore voltage end A exports as low, voltage end B exports as high, and the signal logic like this on RS485 order wire is just 0;
When rs 232 serial interface signal TXD inputs modulation infrared communication module, if rs 232 serial interface signal TXD is low level, then triode Q2 conducting, infrared transmission diode D5 transmission frequency is the modulation signal of 38KHz, if rs 232 serial interface signal TXD is high level, then triode Q2 ends, and infrared transmission diode D5 stops sending modulation signal.
When a signal is transmitted, infrared ray and RS485 send simultaneously, because two communication physical medium unlike signals are independent of each other.But when needs Received signal strength, the Signal reception pin that infrared signal and RS485 signal turn serial port chip FT311D by two diode D1, D2 and pull-up resistor R3 and USB is connected.Because infrared receiver and RS485 normality are high level, because diode D1, D2 are single-phase conducting, the signal therefore inputing to chip FT311D becomes high level through pull-up resistor R3.If infrared communication communicates with RS485, any one party receives low level, and now a corresponding diode is in conducting state, and the signal therefore inputing to chip FT311D is low level.But two signals can not receive simultaneously, otherwise will make mistakes.Apply middle infrared (Mid-IR) communication at the scene to communicate with RS485 and can realize copy reading to ammeter and electric power terminal and setting.On-the-spot maintainer according to circumstances only can select one of them copy reading as ammeter and electric power terminal and setting, and therefore signal there will not be mistake in actual use.In hardware design, we leave two kinds of interfaces, and such field maintenance person can use flexibly according to actual conditions.
Concrete, when connecting RS485 communication module, MAX13085 chip operation is in accepting state, the transmission data input pin DI of chip is high level, after reverser SN74AHC1G14, receive Enable Pin RE is low level (RE is that low level control chip receives), and therefore RS485 signal is by voltage end A, B input, export Transistor-Transistor Logic level through MAX13085 chip and turn serial core sheet FT311D to USB, FT311D chip converts the signal of serial communication to usb communication signal and is input to mobile phone.
When connecting modulation infrared communication module, the outer 38K modulation signal of modulated red is produced by the multi-resonant oscillating circuit of NE555.Infrared remote receiver HM338R detects Received signal strength, and when not receive frequency be 38KHz modulation signal to infrared remote receiver HM338R, infrared remote receiver first pin (OUT) exports as high, otherwise exports low.
Be more than wherein specific implementation of the present utility model, it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these apparent replacement forms all belong to protection domain of the present utility model.
Claims (6)
1. the device of the on-the-spot ammeter based on mobile phone and electric power terminal maintenance, comprise RS485 communication module and modulation infrared communication module, it is characterized in that: described RS485 communication module is connected with serial ports-usb communication change-over circuit respectively by an AND circuit with modulation infrared communication module, described AND circuit comprises two diode D1, a D2 and pull-up resistor R3, described diode D1, be connected to the receiving end of serial ports-usb communication change-over circuit with one end of pull-up resistor R3 after the anode of D2 is connected, the negative electrode of described diode D1 is connected with RS485 communication module transmitting terminal, the negative electrode of described diode D2 is connected with the transmitting terminal of modulation infrared communication module,
The voltage that described serial ports-usb communication change-over circuit comprises to be provided mobile phone carries out changing and the power circuit of voltage stabilizing; Described serial ports-usb communication change-over circuit turns serial port chip U1 by USB and the USB interface signal of mobile phone is converted to rs 232 serial interface signal; Described USB is turned between serial port chip U1 with mobile phone USB interface and is connected by usb circuit.
2. the device of the on-the-spot ammeter based on mobile phone according to claim 1 and electric power terminal maintenance, it is characterized in that: described RS485 communication module comprises a phase inverter U2, also comprise the signal from serial ports-usb communication change-over circuit by the control chip U3 of the laggard row relax of described phase inverter U2, described inverter input is connected with the transmission data input pin DI of control chip U3, the output terminal of phase inverter U2 is simultaneously with the reception Enable Pin RE of control chip U3 with send Enable Pin DE and be connected, the voltage end A of described control chip U3, a two-way voltage stabilizing diode V1 in parallel between B, wherein voltage end A connects a pull-up resistor R4, voltage end B connects a pull down resistor R5.
3. the device of the on-the-spot ammeter based on mobile phone according to claim 1 and electric power terminal maintenance, it is characterized in that: described modulation infrared communication module comprises infrared modulation frequency signal circuit, modulated red transtation mission circuit and the outer communications reception circuit of modulated red outward of the modulation signal providing a stabilized frequency, and described infrared modulation frequency signal circuit is connected with the outer transtation mission circuit of modulated red by a resistance R11.
4. the device of the on-the-spot ammeter based on mobile phone according to claim 3 and electric power terminal maintenance, is characterized in that: the outer communications reception circuit of described modulated red comprises an infrared remote receiver.
5. the device of the on-the-spot ammeter based on mobile phone according to claim 3 and electric power terminal maintenance, it is characterized in that: described infrared modulation frequency signal circuit comprises an oscillatory circuit chip U4, the high-triggering end TH of described oscillatory circuit chip U4, low triggering end TL connects the anode of a diode D3 and the negative electrode of another diode D4 after connecting respectively, simultaneously by a capacity earth, the negative electrode of described diode D3 is connected power supply by resistance R7 with R9, the anode of diode D4 connects power supply by resistance R9, be connected to the discharge end DIS of oscillatory circuit chip U4 simultaneously, the voltage controling end CV of oscillatory circuit chip U4 is by an electric capacity C12 ground connection, oscillation frequency output terminal OUT connects the outer transtation mission circuit of modulated red.
6. the device of the on-the-spot ammeter based on mobile phone according to claim 3 and electric power terminal maintenance, it is characterized in that: the outer transtation mission circuit of described modulated red comprises a two triode Q1 and Q2 and infrared transmitting tube D5, the base stage of described triode Q2 connects the transmitting terminal that USB turns serial port chip U1, collector is connected with the emitter of triode Q1, connect a resistance R12 between its emitter and base stage, the emitter of triode Q2 connects power supply simultaneously; The collector of described triode Q1 connects infrared transmitting tube D5, current-limiting resistance R13 successively to ground, base stage access modulation frequency signal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222844.6U CN204117347U (en) | 2014-05-04 | 2014-05-04 | The device that a kind of on-the-spot ammeter based on mobile phone and electric power terminal are safeguarded |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420222844.6U CN204117347U (en) | 2014-05-04 | 2014-05-04 | The device that a kind of on-the-spot ammeter based on mobile phone and electric power terminal are safeguarded |
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| CN204117347U true CN204117347U (en) | 2015-01-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330876A (en) * | 2016-08-17 | 2017-01-11 | 国家电网公司 | Communication interface converter based on M-BUS for concentrated meter reading system |
| CN113870486A (en) * | 2021-08-27 | 2021-12-31 | 深圳市敏泰智能科技有限公司 | Intelligent water meter near-field management system and management method |
-
2014
- 2014-05-04 CN CN201420222844.6U patent/CN204117347U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106330876A (en) * | 2016-08-17 | 2017-01-11 | 国家电网公司 | Communication interface converter based on M-BUS for concentrated meter reading system |
| CN113870486A (en) * | 2021-08-27 | 2021-12-31 | 深圳市敏泰智能科技有限公司 | Intelligent water meter near-field management system and management method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150121 |
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| CF01 | Termination of patent right due to non-payment of annual fee |