CN218767074U - Safe mutual bluetooth photoelectric head of ammeter - Google Patents
Safe mutual bluetooth photoelectric head of ammeter Download PDFInfo
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- CN218767074U CN218767074U CN202222758039.2U CN202222758039U CN218767074U CN 218767074 U CN218767074 U CN 218767074U CN 202222758039 U CN202222758039 U CN 202222758039U CN 218767074 U CN218767074 U CN 218767074U
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Abstract
The utility model discloses an ammeter safe mutual bluetooth photoelectric head, including safe cryptographic module, MCU module, infrared conversion module, power module and bluetooth communication module, infrared conversion module includes infrared receiving unit and infrared transmitting unit, and infrared receiving unit and infrared transmitting unit all are connected with the MCU module, and the MCU module is connected with safe cryptographic module and bluetooth communication module respectively. When the mobile terminal is connected with the Bluetooth module, the MCU module and the server master station carry out authentication and signature, first data are input after the authentication and signature, the safety encryption module decrypts the first data, the first data are sent to the electric energy meter through the infrared sending unit, second data are returned to the electric energy meter and sent to the infrared receiving unit, the safety encryption module is input at last and sent to the mobile terminal through the Bluetooth communication module after being encrypted in a specified mode, and the data have high safety in the transmission process and are not easy to crack. The embodiment of the utility model provides a but wide application in electrical equipment technical field.
Description
Technical Field
The utility model relates to the technical field of electrical equipment, especially, relate to an ammeter safe mutual bluetooth photoelectric head.
Background
Along with social industrialization and urbanization, the electric wire netting construction is constantly strengthened, and neotype bluetooth smart electric meter's installation quantity promotes year by year, so, the demand of device is read on assorted bluetooth intelligent electric energy meter field also is increasing step by step.
At present, the on-site reading device of the electric energy meter mostly uses a portable Bluetooth photoelectric head, the Bluetooth photoelectric head sends data transmitted by the electric energy meter to a mobile terminal through Bluetooth communication to complete reading, potential safety hazards close to the electric energy meter and trouble of disassembling the electric energy meter can be avoided, and reading efficiency is greatly improved.
However, after the current bluetooth optical head on the market is connected with a mobile terminal, data transmission is direct and transparent, and the data interaction process is not encrypted regularly, so that the transmission data is easy to crack.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an aim at provides an ammeter safe interaction bluetooth photoelectric head, can encrypt the data of transmission, greatly strengthens transmission data's security.
The embodiment of the utility model provides an ammeter safe mutual bluetooth photoelectric head, including safe cryptographic module, MCU module, infrared conversion module, power module and bluetooth communication module, infrared conversion module includes infrared receiving unit and infrared transmitting unit, infrared receiving unit with infrared transmitting unit all with the MCU module is connected, power module respectively with safe cryptographic module the MCU module bluetooth communication module infrared receiving unit with infrared transmitting unit connects, safe cryptographic module with bluetooth communication module all with the MCU module is connected.
Optionally, the safe interactive bluetooth optical head of ammeter further includes an indicator light module, the indicator light module respectively with the MCU module with the power module is connected.
Optionally, the indicator light module comprises light emitting diodes of two or more colors.
Optionally, the power module includes an interface unit, a voltage conversion unit and a charging unit, the interface unit is connected to the voltage conversion unit and the charging unit, the charging unit is connected to the voltage conversion unit, and the voltage conversion unit is connected to the security encryption module, the MCU module, the bluetooth communication module, the infrared receiving unit and the infrared transmitting unit.
Optionally, the security encryption module includes an ESAM chip and an ESAM chip peripheral circuit.
Optionally, the MCU control unit includes an FM33A0 chip and an FM33A0 chip peripheral circuit.
Optionally, the voltage conversion unit includes a TPS76933 chip and a TPS76933 chip peripheral circuit.
Optionally, the charging unit includes a TP4056 chip and a TP4056 chip peripheral circuit.
Optionally, the FM33A0 chip peripheral circuit includes a low voltage alarm circuit.
Optionally, the TP4056 chip peripheral circuitry includes a lithium battery.
Implement the embodiment of the utility model provides a include following beneficial effect: the utility model provides an ammeter safety interaction bluetooth photoelectric head includes safe cryptographic module, MCU module, infrared conversion module, power module and bluetooth communication module, infrared conversion module includes infrared receiving unit and infrared transmitting unit, infrared receiving unit with infrared transmitting unit all with the MCU module is connected, power module respectively with safe cryptographic module the MCU module bluetooth communication module infrared receiving unit with infrared transmitting unit connects, safe cryptographic module with bluetooth communication module all with the MCU module is connected. The mobile terminal transmits signals with the MCU module through the Bluetooth communication module, the MCU module performs terminal identity authentication with the master station, the MCU module inputs the signals transmitted by the mobile terminal into the safety encryption module for decryption after the authentication is passed, the signals are input into the infrared transmitting unit and transmitted to the receiving end of the electric energy meter, the electric energy meter returns required data to the infrared receiving unit through infrared signals, the signals are converted into electric signals, the safety encryption module is input into the safety encryption module through the MCU module for data encryption, then the encrypted data are transmitted to the Bluetooth communication unit through the MCU module, the Bluetooth communication unit transmits the data to the mobile terminal for completing reading, the data are encrypted and authenticated by the terminal identity in the data transmission process, and the safety of the transmitted data is greatly enhanced.
Drawings
Fig. 1 is a schematic block diagram of a safe interaction bluetooth optical head of an electricity meter according to an embodiment of the present invention;
fig. 2 is a schematic block diagram of a power module according to an embodiment of the present invention;
fig. 3 is a schematic block diagram of an indicator light module according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a CPU module provided by an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a secure cryptographic module according to an embodiment of the present invention;
fig. 6 is a schematic circuit diagram of a charging unit according to an embodiment of the present invention;
fig. 7 is a schematic circuit diagram of a voltage conversion unit according to an embodiment of the present invention;
fig. 8 is a schematic circuit diagram of an infrared receiving unit according to an embodiment of the present invention;
fig. 9 is a schematic circuit diagram of an infrared transmitting unit provided in an embodiment of the present invention;
fig. 10 is a schematic circuit diagram of an indicator light module according to an embodiment of the present invention;
fig. 11 is a schematic circuit diagram of a bluetooth communication module according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments, and it should be noted that any combination of the embodiments or technical features described below can be used to form a new embodiment without conflict.
Referring to fig. 1, the embodiment of the utility model provides an ammeter safety interaction bluetooth photoelectric head, including safe cryptographic module, MCU module, infrared conversion module, power module and bluetooth communication module, infrared conversion module includes infrared receiving unit and infrared transmitting unit, infrared receiving unit with infrared transmitting unit all with the MCU module is connected, power module respectively with safe cryptographic module the MCU module bluetooth communication module infrared receiving unit with infrared transmitting unit connects, safe cryptographic module with bluetooth communication module all with the MCU module is connected.
The safety encryption module is used for realizing various functions of data encryption, decryption, signature verification, identity authentication, access authority control, communication line protection and the like, and protecting the safety of data in the processes of storage, transmission and interaction.
And the MCU module is used for controlling the work of the whole photoelectric head, inputting the encrypted first data of the mobile terminal received by the Bluetooth communication module into the security encryption module for decryption, inputting the decrypted first data into the infrared conversion module and receiving second data returned by the electric energy meter through the infrared conversion module, and outputting the second data to the mobile terminal through the Bluetooth communication module after the second data is input into the security module for encryption.
The infrared receiving unit is used for receiving an infrared light signal sent by the electric energy meter, converting the infrared light signal into an electric signal and inputting the electric signal into the MCU module; and the infrared transmitting unit is used for converting the electric signal input by the MCU module into an infrared light signal and transmitting the infrared light signal to the photoelectric interface end of the electric energy meter.
And the power supply module is used for providing working voltage for each module of the photoelectric head.
And the Bluetooth communication module is in wireless connection with the mobile terminal to complete the communication between the mobile terminal and the MCU module.
Specifically, the mobile terminal sends encrypted first data to the Bluetooth communication module, the Bluetooth communication module inputs the first data into the MCU module, the MCU module and the master station end of the server carry out authentication and signature, the first data are input into the safety encryption module to be decrypted after the authentication is passed, the decrypted first data are input into the infrared transmitting unit through the MCU module and are converted into infrared light signals to be sent to the photoelectric interface end of the electric energy meter, required second data are returned according to the first data of the electric energy meter and are sent to the infrared receiving unit through the photoelectric transmitting end, the infrared receiving unit converts the received infrared light signals into electric signals to be input into the MCU module, the MCU module outputs the input electric second data to the safety encryption module to be encrypted regularly, the second data are input into the Bluetooth communication module through the MCU module after the encryption, and the Bluetooth communication module sends the second data to the mobile terminal, and copying of the electric energy meter is finished.
Referring to fig. 2, optionally, the power module includes an interface unit, a voltage conversion unit and a charging unit, the interface unit is connected to the voltage conversion unit and the charging unit, the charging unit is connected to the voltage conversion unit, and the voltage conversion unit is connected to the security encryption module, the MCU module, the bluetooth communication module, the infrared receiving unit and the infrared transmitting unit.
The interface unit is connected with an external power supply, comprises a USB interface unit and the like, and is used for supplying power to the voltage conversion unit and charging the charging unit.
And the voltage conversion unit is used for converting the voltage input by the interface unit, and the interface unit supplies power to each module of the photoelectric head during the charging period of the charging unit.
And the charging unit is used for storing electric energy and supplying power to each module of the photoelectric head when the interface unit is disconnected with an external power supply.
Specifically, the power module inputs 5V voltage through the USB interface, the voltage conversion unit converts the 5V voltage into 3.3V voltage and inputs the MCU module power end, the Bluetooth communication module power end, the infrared transmitting unit power end, the infrared receiving unit power end and the safety encryption module power end, the voltage input by the USB interface charges for the charging unit, the voltage input by the USB interface is disconnected when charging is completed, the lithium battery of the charging unit outputs voltage to the voltage conversion unit at the moment, the voltage conversion unit provides 3.3V voltage and inputs the MCU module power end, the Bluetooth communication module power end, the infrared transmitting unit power end, the infrared receiving unit power end and the safety encryption module power end.
Referring to fig. 3, an indicator light module is a schematic block diagram, and optionally, the safe interactive bluetooth optical head of the electric meter further includes an indicator light module, and the indicator light module is connected to the MCU module and the power module respectively.
The indicating lamp module comprises light emitting diodes with various colors and can emit light with different colors according to the instruction of the MCU module.
Specifically, MCU module control pilot lamp module sends green light after the unit that charges is full of the electricity, and MCU module control pilot lamp module sends red light when the unit that charges is not full of the electricity, and MCU module control pilot lamp module sends blue light when having data interaction.
Referring to fig. 4, optionally, the MCU control unit includes an FM33A0 chip and an FM33A0 chip peripheral circuit.
Specifically, FM33A0 chip are the MCU chip of a low-power consumption, are equipped with multiple peripheral hardware interface, and the information processing efficiency is high, and the function is various. J4 is a Serial Peripheral Interface (SPI for short), which completes the communication between the FM33A0 chip and other modules in a Serial manner; c19 is a filter capacitor, removes noise of an FM33A0 chip connected to a power supply, and C1 is a decoupling capacitor of the FM33A0 chip, removes noise generated on the chip and maintains stable operation of the chip.
Referring to fig. 4, optionally, the FM33A0 chip peripheral circuit includes a low voltage alarm circuit.
Specifically, the low voltage warning circuit is connected with the charging unit, when the output voltage of the charging unit is lower than the voltage of the low voltage warning circuit, the FM33A0 chip sends out a warning, the C20 is a decoupling capacitor for the input current of the low voltage warning circuit, when the voltage input by the BAT endpoint is lower than the warning voltage, the current flowing through the resistor R11 becomes small, and when the current is input to the FM33A0 chip, the FM33A0 chip sends out a low voltage warning.
Referring to fig. 5, optionally, the security encryption module includes an ESAM chip and an ESAM chip peripheral circuit.
Specifically, the ESAM chip is a security chip having an operating system, and can perform a plurality of functions such as encryption and decryption of data, bidirectional identity authentication, access right control, communication line protection, temporary key export, data file storage, and the like. J6 is SPI, and completes the serial communication between ESAM chip and FM33A0 chip, the end point 3 'ETXD' of J6 connects with the end point 7 'ETXD' of FM33A0 chip, the end point 4 'ERXD' of J6 connects with the end point 6 'ERXD' of FM33A0 chip; and C2 and C11 are decoupling capacitors at the communication power end in a serial mode, and power noise is removed.
Referring to fig. 6, the charging unit may optionally include a TP4056 chip and a TP4056 chip peripheral circuit.
Specifically, TP4056 is a constant current/constant voltage linear charger for a single lithium ion battery. TP4056 may be suitable for USB power supply and adapter power supply operation, portable application. The PROG (pin 2) is a constant-current charging current setting and charging current monitoring end, and an external resistor R20 is connected to the ground end from the PROG pin to program the charging current; STDBY (pin 6) is a battery charging completion indicating terminal, and is pulled to a low level by an internal switch when the current charging is completed, so that the charging is completed, otherwise, the STDBY pin is in a high-resistance state; GHRG (pin 7) is a charge status indicator for open drain output, and when the battery is charged, the CHRG pin is pulled to low level by the internal switch to indicate that charging is in progress, otherwise, the CHRG pin is in high resistance state.
Referring to fig. 6, optionally, the TP4056 chip peripheral circuit includes a lithium battery.
Specifically, J1 is a lithium battery for storing electric energy; c13 is a decoupling capacitor of the lithium battery and filters noise; and S1 is a switch, and the output voltage of the lithium battery is selected and input into the voltage conversion unit. The USB interface input voltage charges for the lithium battery through charging chip TP4056, and voltage is not output during charging, and the input voltage disconnection of the USB interface after charging is completed, and the lithium battery output voltage supplies power for the voltage conversion unit and further supplies power for each module of the photoelectric head.
Referring to fig. 7, optionally, the voltage conversion unit includes a TPS76933 chip and a TPS76933 chip peripheral circuit.
Specifically, the TPS76933 chip is an ultralow static power consumption and low voltage drop linear voltage regulator, and the output voltage is in the range of 1.2V to 5.5V. C10 and C9 are decoupling capacitors at the power supply output end of the TPS76933 chip, and noise is filtered; d2 is a diode for preventing current from flowing backwards, C21 is a decoupling capacitor of the output voltage of the charging unit for filtering the noise of the voltage input into the TPS76933 chip; when the USB interface inputs voltage (USB 5V), the input voltage is converted into VCC (3.3V) and output to each module, when the input voltage of the USB interface is disconnected, the switch S1 is closed, the output voltage (BAT 1) of the lithium battery is input into the voltage conversion unit, and is converted into VCC (3.3V) voltage through the voltage conversion unit and output to each module.
Specifically, referring to fig. 8, in a schematic diagram of an infrared receiving unit, a chip VS1738 converts an infrared light signal sent from the power meter into an electrical signal (RXD 0) and outputs the electrical signal to a 17 th pin of an FM33A0 chip.
Specifically, referring to fig. 9, in a schematic circuit diagram of the infrared transmitting unit, the triode Q1 amplifies an electrical signal input from the 18 th pin TXD0 of the FM33A0 chip and inputs the amplified electrical signal into the light emitting diode D1, and the light emitting diode D1 converts the electrical signal into an optical signal and transmits the optical signal to the photoelectric interface of the electric energy meter.
Referring to fig. 10, the indicator light module may optionally include light emitting diodes of two colors or more.
Specifically, J5 is an SPI interface and communicates with the FM33A0 chip, the endpoint 2 of J5 is connected to the endpoint 21"blue" of the FM33A0 chip, the endpoint 3 of J5 is connected to the endpoint 23"red" of the FM33A0 chip, and the endpoint 4 of J5 is connected to the endpoint 24"green" of the FM33A0 chip; when the charging is finished, the FM33A0 chip outputs an electric signal to the light emitting diode D5 through the J5, and the D5 emits green light; when the charging is not finished, the FM33A0 chip outputs an electric signal to the light emitting diode D4 through the J5, and the D4 emits red light; when data is transmitted, the FM33A0 chip outputs an electric signal to the light emitting diodes D6 through the J5, and the light emitting diodes D6 emit blue light.
Specifically, referring to fig. 11, a schematic circuit diagram of a bluetooth communication unit, BT2 being a bluetooth communication interface, the endpoint 3 mtxd of BT2 being connected to the endpoint 9 mtxd of the FM33A0 chip, inputting the first data of the mobile terminal into the FM33A0 chip; the terminal 4 mrxd of BT2 is connected to the terminal 8 mrxd of the FM33A0 chip, and the second data output by the FM33A0 chip is transmitted to the mobile terminal through BT 2.
The utility model relates to an ammeter safe mutual bluetooth photoelectric head's theory of operation does:
when the photoelectric head is used for copying electric energy data, the mobile terminal is connected with the Bluetooth communication module firstly, the FM33A0 chip of the MCU module and the server master station carry out authentication signature, after the authentication is passed, the mobile terminal sends corresponding encrypted first data to the Bluetooth communication module according to the content to be copied, the Bluetooth communication module inputs the received first data into the FM33A0 chip of the MCU module, the first data is input into the ESAM chip of the security encryption module through a serial interface, the ESAM chip decrypts the first data and inputs the decrypted first data into the infrared sending unit through the serial interface on the FM33A0 chip, the infrared sending unit converts the first data into an infrared light signal and sends the infrared light signal to the photoelectric interface end of the electric energy meter, the electric energy meter further sends an infrared light signal of required second data to the infrared receiving unit through the photoelectric sending end, the infrared light signal is converted into an electric signal and then the electric signal is input into the ESAM chip of the security encryption module through the serial interface of the FM33A0 chip, the ESAM chip encrypts the input second data, the electric energy meter writes the encrypted second data into the Bluetooth communication module through the serial interface of the Bluetooth communication module, and the mobile terminal writes the second data into the electric energy meter.
Implement the embodiment of the utility model provides a include following beneficial effect: the utility model provides an ammeter safe mutual bluetooth photoelectric head, including safe cryptographic module, MCU module, infrared conversion module, power module and bluetooth communication module, infrared conversion module includes infrared receiving unit and infrared transmitting unit, infrared receiving unit with infrared transmitting unit equally divide do not with the MCU module with power module connects, power module respectively with safe cryptographic module the MCU module bluetooth communication module infrared receiving unit with infrared transmitting unit connects, safe cryptographic module with bluetooth communication module all with the MCU module is connected. When the mobile terminal is connected with the Bluetooth module, the FM33A0 chip of the MCU module and the server master station carry out authentication signature, the mobile terminal inputs data through the Bluetooth module after the authentication is passed, and the safety encryption module decrypts the terminal data and carries out the regulated encryption on the returned electric energy meter data, so that the data has high safety in the transmission process and is not easy to crack.
While the preferred embodiments of the present invention have been described, the present invention is not limited to the embodiments, and those skilled in the art can make various equivalent modifications or substitutions without departing from the spirit of the present invention, and such equivalent modifications or substitutions are intended to be included within the scope of the present invention as defined by the appended claims.
Claims (10)
1. The utility model provides an ammeter security interaction bluetooth photoelectric head which characterized in that, includes safe encryption module, MCU module, infrared conversion module, power module and bluetooth communication module, infrared conversion module includes infrared receiving unit and infrared transmitting unit, infrared receiving unit with infrared transmitting unit all with the MCU module is connected, power module respectively with safe encryption module, the MCU module bluetooth communication module infrared receiving unit with infrared transmitting unit connects, safe encryption module with bluetooth communication module all with the MCU module is connected.
2. The Bluetooth safety interactive meter head as claimed in claim 1, further comprising an indicator light module, wherein the indicator light module is connected to the MCU module and the power module respectively.
3. The Bluetooth safety interactive electric meter head as claimed in claim 2, wherein the indicator light module comprises two or more LEDs.
4. The Bluetooth safety interaction electric meter head according to any one of claims 1-3, wherein the power module comprises an interface unit, a voltage conversion unit and a charging unit, the interface unit is respectively connected with the voltage conversion unit and the charging unit, the charging unit is connected with the voltage conversion unit, and the voltage conversion unit is respectively connected with the safety encryption module, the MCU module, the Bluetooth communication module, the infrared receiving unit and the infrared transmitting unit.
5. The Bluetooth safety interactive meter head as claimed in claim 1, wherein the safety encryption module comprises an ESAM chip and an ESAM chip peripheral circuit.
6. An electric meter safe interaction Bluetooth optical head as claimed in claim 1, wherein the MCU module comprises FM33A0 chip and FM33A0 chip peripheral circuit.
7. The Bluetooth optical head for safe interaction of electricity meters in claim 4, wherein the voltage conversion unit comprises a TPS76933 chip and a TPS76933 chip peripheral circuit.
8. The Bluetooth enabled electrical meter security interaction head of claim 4, wherein the charging unit comprises a TP4056 chip and a TP4056 chip peripheral circuit.
9. An electric meter safe interaction Bluetooth optical head as claimed in claim 6, wherein said FM33A0 chip peripheral circuit comprises a low voltage alarm circuit.
10. The Bluetooth enabled safe interaction electrical meter head of claim 8, wherein the TP4056 chip peripheral circuitry comprises a lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222758039.2U CN218767074U (en) | 2022-10-19 | 2022-10-19 | Safe mutual bluetooth photoelectric head of ammeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222758039.2U CN218767074U (en) | 2022-10-19 | 2022-10-19 | Safe mutual bluetooth photoelectric head of ammeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218767074U true CN218767074U (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222758039.2U Active CN218767074U (en) | 2022-10-19 | 2022-10-19 | Safe mutual bluetooth photoelectric head of ammeter |
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| CN (1) | CN218767074U (en) |
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2022
- 2022-10-19 CN CN202222758039.2U patent/CN218767074U/en active Active
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