Dual-channel communication fee control intelligent electric meter circuit

Abstract

The utility model relates to a two-channel communication fee-control intelligent electric meter circuit. The fee-control intelligent electric meter circuit comprises a metering chip, a switching circuit, a Bluetooth chip, a 4G module and a 4G Internet of Things card which are in telecommunication connection in sequence. The metering chip is used for metering electricity consumption; and the 4G module is used for inserting a 4G Internet of Things card so as to realize remote communication. Therefore, near field communication with mobile terminals such as a mobile phone and a tablet personal computer can be realized through the Bluetooth chip, and real-time data interaction with a remote power utilization management system can also be realized through a 4G network, so that the functions of remote meter reading, electric charge settlement and the like can be realized, the problem of time delay of prepayment recharging is solved, and the use experience of a user is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supplies, in particular to a dual-channel communication fee-controlled intelligent electric meter circuit. Background Art

[0002] At present, in various fields such as residential electricity consumption, commercial electricity consumption, and industrial electricity consumption, intelligent electric meters with a single communication channel are used. This intelligent electric meter only provides short-distance communication, so remote meter reading and electricity bill settlement cannot be realized, resulting in delays in prepaid electricity bill recharge for users and poor user experience. Summary of the Utility Model

[0003] Based on this, in view of the above technical problems, it is necessary to provide a dual-channel communication fee-controlled intelligent electric meter circuit, which can realize functions such as remote meter reading and electricity bill settlement, solve the problem of delayed prepaid recharge, and improve the user experience.

[0004] A dual-channel communication fee-controlled intelligent electric meter circuit, the fee-controlled intelligent electric meter circuit includes a metering chip, a switching circuit, a Bluetooth chip, a 4G module, and a 4G IoT card that are sequentially connected by telecommunications; the metering chip is used for measuring the electricity consumption; the 4G module is used for inserting a 4G IoT card to realize remote communication.

[0005] Preferably, there are multiple metering chips, and the switching circuit is a multiplexer; the metering chips are respectively connected to the multiplexer by telecommunications, and the multiplexer is connected to the Bluetooth chip.

[0006] Preferably, each metering chip is a chip of model V9240; the multiplexer is a chip of model CD4052.

[0007] Preferably, the Bluetooth chip is a chip of model QFN28.

[0008] Preferably, the 4G module is an EC800E-CN module.

[0009] Preferably, the Bluetooth chip integrates an analog-to-digital conversion circuit;

[0010] The fee-controlled intelligent electric meter circuit further includes a liquid crystal driver and a liquid crystal display that are connected by telecommunications, and the liquid crystal driver is connected to the Bluetooth chip.

[0011] Preferably, the fee-controlled intelligent electric meter circuit further includes a monitoring circuit, and the monitoring circuit is connected to the Bluetooth chip by telecommunications.

[0012] Preferably, the fee-controlled intelligent electric meter circuit further includes a touch sensing chip;

[0013] The touch sensing chip is respectively connected to the Bluetooth chip and the 4G module through telecommunications to receive the relay switch-on and switch-off instructions sent by the Bluetooth chip or the 4G module.

[0014] Preferably, the fee-controlled smart meter circuit further includes a power manager, a low-dropout voltage regulator, and a DC-DC power chip;

[0015] The power manager is connected to the touch sensing chip, the low-dropout voltage regulator, and the DC-DC power chip to provide voltages with a specified first voltage value for the touch sensing chip, the low-dropout voltage regulator, and the DC-DC power chip;

[0016] The low-dropout voltage regulator is respectively connected to the metering chip, the switch circuit, and the Bluetooth chip to provide voltages with a specified second voltage value for the metering chip, the switch circuit, and the Bluetooth chip;

[0017] The DC-DC power chip is connected to the 4G module to provide a voltage with a specified second voltage value for the 4G module;

[0018] The first voltage value is greater than the second voltage value.

[0019] Preferably, the power manager is a power supply chip of the FM01BTSH model; and / or,

[0020] The DC-DC power chip is a chip of the BL9641 model.

[0021] For the above-mentioned dual-channel communication fee-controlled smart meter circuit, the fee-controlled smart meter circuit includes a metering chip, a switch circuit, a Bluetooth chip, a 4G module, and a 4G IoT card that are sequentially connected through telecommunications; the metering chip is used for measuring power consumption; the 4G module is used for inserting a 4G IoT card to achieve remote communication. Therefore, it is possible to perform short-distance communication with mobile terminals such as mobile phones and tablet computers through the Bluetooth chip, and also perform real-time data interaction with the remote power consumption management system through the 4G network, thereby enabling functions such as remote meter reading and electricity bill settlement, solving the problem of delayed prepaid recharge, and improving the user experience. Description of the Drawings

[0022] Figure 1 It is a structural block diagram of a dual-channel communication fee-controlled smart meter circuit in an embodiment of the present invention;

[0023] Figure 2 It is a circuit diagram of a multiplexer in an embodiment of the present invention;

[0024] Figure 3Circuit diagram of the metering chip U9 in an embodiment of the present utility model;

[0025] Figure 4 Circuit diagram of the metering chip U11 in an embodiment of the present utility model;

[0026] Figure 5 Circuit diagram of the metering chip U13 in an embodiment of the present utility model;

[0027] Figure 6 Circuit diagram of the Bluetooth chip U12 in an embodiment of the present utility model;

[0028] Figure 7 Circuit diagram of the 4G module chip U3 in an embodiment of the present utility model;

[0029] Figure 8 Circuit diagram of the liquid crystal driver and liquid crystal display in an embodiment of the present utility model;

[0030] Figure 9 Circuit diagram of the monitoring circuit chip U10 in an embodiment of the present utility model;

[0031] Figure 10 Circuit diagram of the touch sensing chip U15 in an embodiment of the present utility model;

[0032] Figure 11 Circuit diagram of the power manager chip U11 in an embodiment of the present utility model;

[0033] Figure 12 Circuit diagram of the low dropout voltage regulator chip U4 in an embodiment of the present utility model;

[0034] Figure 13 Circuit diagram of the DC-DC power chip U2 in an embodiment of the present utility model. Detailed implementation manners

[0035] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the following further details the utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0036] The present utility model provides a dual-channel communication fee-controlled intelligent electricity meter circuit, as Figure 1As shown in the figure, a dual-channel communication fee-controlled intelligent electricity meter circuit includes a metering chip 100, a switching circuit 200, a Bluetooth chip 300, a 4G module 400, and a 4G IoT card 500 that are sequentially connected by telecommunications. The metering chip 100 is used to measure the electricity consumption. The 4G module 400 is used to insert the 4G IoT card 500 to achieve remote communication. Therefore, users can communicate with mobile terminals such as mobile phones and tablets through the Bluetooth chip 300 at a short distance, or through the combination of the 4G module 400 and the 4G IoT card 500, realize real-time data interaction with the remote electricity consumption management system through the 4G network, so as to be able to realize functions such as remote meter reading and electricity bill settlement, solve the problem of delayed prepaid recharge, and improve the user experience.

[0037] Preferably, there are multiple metering chips, and the switching circuit is a multiplexer switch; the metering chips are respectively connected to the multiplexer switch by telecommunications, and the multiplexer switch is connected to the Bluetooth chip. Specifically, each metering chip is a chip of model V9240, which supports active power metering for one path of current at the same time. The multiplexer switch is a chip of model CD4052, which realizes an analog multiplexer switch, a digital multiplexer switch, and signal gating.

[0038] In one example, as Figure 2 shown, the multiplexer switch is chip U8. There are 3 metering chips. As Figure 3 、 Figure 4 and Figure 5 shown, the multiple metering chips include chip U9, chip U11, and chip U13, and their models are all V9240. Combining Figures 2 - 5 shown, chip U8 is connected to the 6th pin of chip U9, that is, Figure 3 the 9-6PIN pin in Figure 4 . Chip U8 is connected to the 6th pin of chip U11, that is, Figure 5 the 11-6PIN pin in

[0039] Preferably, the Bluetooth chip is a chip of model QFN28, which can realize analog-to-digital conversion, has strong anti-interference ability and can provide in-line editing.

[0040] Specifically, as Figure 6 shown, the Bluetooth chip is chip U12. Combining Figure 6 and Figure 2 shown, chip U12 and chip U8 are connected by corresponding pins through telecommunications.

[0041] Preferably, the 4G module is an EC800E-CN module. The 4G module has functions such as short message and data transmission. The module is registered on the network and the network connection is normal. In this mode, the power consumption of the module depends on the network settings and the data transmission rate. Specifically, as Figure 7 shown, the 4G module is chip U3. Combining Figure 6 and Figure 7 shown, chip U3 and chip U12 are connected by corresponding pins for telecommunications. The 4G IoT card is a surface-mounted 4G IoT card. The Bluetooth chip outputs a network communication signal to the 4G module.

[0042] Preferably, the Bluetooth chip integrates an analog-to-digital conversion circuit; the prepaid smart meter circuit further includes a liquid crystal driver and a liquid crystal display that are connected by telecommunications, and the liquid crystal driver is connected to the Bluetooth chip. Among them, the prepaid smart meter circuit further includes a monitoring circuit, and the monitoring circuit is connected to the Bluetooth chip by telecommunications.

[0043] Among them, the prepaid smart meter circuit further includes a touch sensor chip; the touch sensor chip is respectively connected to the Bluetooth chip and the 4G module by telecommunications to receive a relay switch-on and switch-off instruction sent by the Bluetooth chip or the 4G module.

[0044] Specifically, the touch sensor chip AI01K is used for automatic sensitivity correction and an embedded common-mode interference removal circuit; after receiving the relay switch-on and switch-off instruction, it controls the relay to switch on and off.

[0045] Specifically, as Figure 8 shown, the liquid crystal driver is chip U7. Serial Configuration128*64 represents the liquid crystal display. Pin 6 of chip U7 is connected to pin 23 of chip U12, pin 7 of chip U7 is connected to pin 24 of chip U12, and pin 8 of chip U7 is connected to pin 25 of chip U12.

[0046] The monitoring circuit is a chip of the MAX6448UK31L model. As Figure 9 shown, the monitoring circuit is chip U10. The connection method between chip U10 and the pins of chip U12 is as Figure 9 shown.

[0047] As Figure 10 shown, the touch sensor chip is chip U15. Chip U15 is connected to chip U12 and chip U3 through corresponding pins. Both chip U12 and chip U3 send instructions to chip U15 for the 4G module.

[0048] Preferably, the prepaid smart meter circuit further includes a power manager, a low-dropout voltage regulator, and a DC-DC power chip; the power manager is connected to the touch sensing chip, the low-dropout voltage regulator, and the DC-DC power chip, and provides a voltage with a specified first voltage value for the touch sensing chip, the low-dropout voltage regulator, and the DC-DC power chip; the low-dropout voltage regulator is respectively connected to the metering chip, the switch circuit, and the Bluetooth chip, and provides a voltage with a specified second voltage value for the metering chip, the switch circuit, and the Bluetooth chip; the DC-DC power chip is connected to the 4G module and provides a voltage with a specified second voltage value for the 4G module; the first voltage value is greater than the second voltage value. Among them, the power manager is a power supply chip of the FM01BTSH model; and / or, the DC-DC power chip is a chip of the BL9641 model.

[0049] Specifically, the first voltage value is 12V and the second voltage value is 3.3V. As Figure 11 shown, the power manager is chip U1, which provides a 12V voltage externally. For example, it provides a 12V voltage for chip U15. As Figure 10 shown in, it provides a 12V voltage for chip U15. As Figure 12 shown, the low-dropout voltage regulator is chip U4. After obtaining a 12V voltage from chip U1, it converts the 12V voltage into a 3.3V voltage and provides a 3.3V voltage for chip U9, chip U11, chip U13, chip U8, and chip U12. As Figure 13 shown, the DC-DC power chip is chip U2. After obtaining a 12V voltage from chip U1, it converts the 12V voltage into a 3.3V voltage and provides a 3.3V voltage for chip U3.

[0050] The above embodiments only represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A dual-channel communication fee control smart meter circuit, characterized in that: The fee-controlled smart meter circuit includes a metering chip, a switch circuit, a Bluetooth chip, a 4G module, and a 4G Internet of Things card that are connected in sequence; The metering chip is used to measure the power consumption; The 4G module is used to insert a 4G Internet of Things card to achieve remote communication.

2. The fee-controlled smart meter circuit according to claim 1, characterized in that: There are multiple metering chips, and the switch circuit is a multi-way selection switch; The metering chips are respectively connected to the multi-way selection switches in telecommunication, and the multi-way selection switches are connected to the Bluetooth chip.

3. The fee-controlled smart meter circuit according to claim 2, characterized in that: All metering chips are V9240 chips; The multi-way selection switch is a chip of the CD4052 model.

4. The fee-controlled smart meter circuit according to claim 2, characterized in that: The Bluetooth chip is a QFN28 chip.

5. The fee-controlled smart meter circuit according to claim 4, characterized in that: The 4G module is the EC800E-CN module.

6. The fee-controlled smart meter circuit according to claim 1, characterized in that: The Bluetooth chip is integrated with an analog-to-digital conversion circuit; The fee-controlled smart meter circuit also includes a liquid crystal driver and a liquid crystal display connected to telecommunications, and the liquid crystal driver is connected to the Bluetooth chip.

7. The fee-controlled smart meter circuit according to claim 6, characterized in that: The fee-controlled smart meter circuit also includes a monitoring circuit, and the monitoring circuit is connected to the Bluetooth chip by telecommunication.

8. The fee-controlled smart meter circuit according to claim 6, characterized in that: The fee-controlled smart meter circuit also includes a touch-sensitive chip; The touch sensing chip is respectively connected to the Bluetooth chip and the 4G module in telecommunication to receive relay closing and closing instructions sent by the Bluetooth chip or the 4G module.

9. The fee-controlled smart meter circuit according to claim 8, characterized in that: The fee-controlled smart meter circuit also includes a power manager, a low-leakage voltage regulator, and a DC-DC power chip; The power manager is connected to the touch sensing chip, the low dropout voltage regulator and the DC-DC power chip, and provides a voltage of a specified first voltage value to the touch sensing chip, the low dropout voltage regulator and the DC-DC power chip; The low dropout voltage regulator is connected to the metering chip, the switch circuit, and the Bluetooth chip respectively, and provides a voltage of a specified second voltage value to the metering chip, the switch circuit, and the Bluetooth chip; The DC-DC power chip is connected to the 4G module to provide the 4G module with a voltage of a specified second voltage value; The first voltage value is greater than the second voltage value.

10. The fee-controlled smart meter circuit according to claim 9, characterized in that: The power manager is a power supply chip of model FM01BTSH; and / or, The DC-DC power supply chip is a BL9641 chip.

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