CN219802497U

CN219802497U - Multi-mode meter reading device

Info

Publication number: CN219802497U
Application number: CN202320938699.0U
Authority: CN
Inventors: 王调建; 王淼; 周震宇; 张维; 喻博; 龚发成
Original assignee: Hunan Silingke Information Technology Co ltd
Current assignee: Hunan Silingke Information Technology Co ltd
Priority date: 2023-04-24
Filing date: 2023-04-24
Publication date: 2023-10-03
Anticipated expiration: 2033-04-24

Abstract

The utility model discloses a multimode meter reading device, which adopts a Bluetooth transceiver circuit, a Bluetooth chip, a dual-mode transceiver chip, an HPLC transmitting circuit, an HPLC receiving circuit, an HRF transmitting circuit, an HRF receiving circuit, a carrier signal coupling circuit, a matched filter circuit and an antenna, wherein the carrier signal coupling circuit is respectively connected with the HPLC transmitting circuit and the HPLC receiving circuit, the matched filter circuit is respectively connected with the antenna, the HRF transmitting circuit and the HRF receiving circuit, and the Bluetooth transceiver circuit is connected with the Bluetooth chip; the dual-mode transceiver chip is respectively connected with the Bluetooth chip, the HPLC transmitting circuit, the HPLC receiving circuit, the HRF transmitting circuit and the HRF receiving circuit. The multimode meter reading device provided by the utility model has strong compatibility and high data acquisition reliability.

Description

Multi-mode meter reading device

Technical Field

The utility model relates to the technical field of meter reading devices, and particularly discloses a multi-mode meter reading device.

Background

With the development of science and technology, the communication technology is gradually changed day by day, and is currently applied to various meter reading modes of low-voltage centralized meter reading by national power grid companies in combination with different application scenes and user demands, wherein the meter reading modes of High Performance Liquid Chromatography (HPLC) (high speed power line communicatio) and frequency shift keying (GFSK) (Gaussian frequency shift keying) modulation mode are most widely applied. However, both communication modes have defects, such as sensitivity of HPLC meter reading to impulse noise and white noise on a power line, and particularly, the success rate is lower when data acquisition is carried out on users with small-sized motor equipment; the GFSK modulation mode can avoid the interference on the power line when the meter is read, but is limited by the modulation mode, and is extremely easy to be interfered by the same-frequency aerial radio; moreover, the two communication modes cannot realize communication link connection for the Bluetooth breaker type electrical equipment.

Therefore, the existing low-voltage centralized meter reading device cannot be compatible with multiple modes at the same time, and is a technical problem to be solved urgently at present.

Disclosure of Invention

The utility model provides a multi-mode meter reading device, and aims to solve the technical problem that the existing low-voltage centralized meter reading device cannot be compatible with multiple modes at the same time.

The utility model relates to a multi-mode meter reading device, which comprises a Bluetooth transceiver circuit, a Bluetooth chip, a dual-mode transceiver chip, an HPLC (high performance liquid chromatography) transmitting circuit, an HPLC receiving circuit, an HRF transmitting circuit, an HRF receiving circuit, a carrier signal coupling circuit, a matched filter circuit and an antenna, wherein the carrier signal coupling circuit is respectively connected with the HPLC transmitting circuit and the HPLC receiving circuit, the matched filter circuit is respectively connected with the antenna, the HRF transmitting circuit and the HRF receiving circuit, and the Bluetooth transceiver circuit is connected with the Bluetooth chip; the dual-mode transceiver chip is respectively connected with the Bluetooth chip, the HPLC transmitting circuit, the HPLC receiving circuit, the HRF transmitting circuit and the HRF receiving circuit.

Further, the Bluetooth receiving and transmitting circuit comprises a first capacitor, a second capacitor and a Bluetooth antenna, wherein two ends of the first capacitor are respectively connected with a 12 th pin of the Bluetooth chip and the Bluetooth antenna; one end of the second capacitor is connected between the Bluetooth antenna and the first capacitor, and the other end of the second capacitor is grounded.

Further, the model of the bluetooth chip is SLC6602A.

Further, the dual-mode transceiver chip is SLC8101A broadband wireless dual-mode transceiver chip 20 manufactured by si Ling Ke.

Further, the HPLC sending circuit includes a differential line driver chip, and the model of the differential line driver chip is THS6222.

Further, the HPLC receiving circuit includes a band pass filter.

Further, the HRF transmit circuit includes a transmit filter.

Further, the HRF receive circuit includes a receive filter.

Further, the carrier signal coupling circuit includes a carrier signal coupler.

Further, the matched filter circuit includes a matched filter.

The beneficial effects obtained by the utility model are as follows:

the utility model provides a multimode meter reading device, which adopts a Bluetooth transceiver circuit, a Bluetooth chip, a dual-mode transceiver chip, an HPLC transmitting circuit, an HPLC receiving circuit, an HRF transmitting circuit, an HRF receiving circuit, a carrier signal coupling circuit, a matched filter circuit and an antenna, wherein the carrier signal coupling circuit is respectively connected with the HPLC transmitting circuit and the HPLC receiving circuit, the matched filter circuit is respectively connected with the antenna, the HRF transmitting circuit and the HRF receiving circuit, and the Bluetooth transceiver circuit is connected with the Bluetooth chip; the dual-mode transceiver chip is respectively connected with the Bluetooth chip, the HPLC transmitting circuit, the HPLC receiving circuit, the HRF transmitting circuit and the HRF receiving circuit. The multi-mode meter reading device provided by the utility model adopts near-field short-distance communication, has large data volume, can read all data items of the electric energy meter in a short distance, can form a point-to-point communication network with Bluetooth nodes in a certain range, can realize point-to-point or point-to-multipoint pairing, can realize simple control on pairing after pairing, and can realize accurate pairing and on-off control on a lower intelligent Bluetooth breaker; compatible with two communication modes of HPLC (high speed power line communicatio, high-speed power line carrier) and HRF (high speed wireless radio frequency, high-speed wireless communication), different transmission media are respectively adopted, the HPLC utilizes the existing power line, and the HRF utilizes the transmission media such as air; the two communication modes can realize wiring-free, and can realize mixed networking simultaneously, and networking is carried out under the same set of routing equipment and routing mechanism, so that power line carrier interference blind spots and wireless interference blind spots in a real environment can be effectively avoided, and data acquisition of the electric energy meter can be effectively and reliably realized.

Drawings

FIG. 1 is a functional block diagram of an embodiment of a multimode meter reading device according to the present utility model;

fig. 2 is a schematic circuit connection diagram of a bluetooth chip and a bluetooth transceiver circuit in the multimode meter reading device provided by the utility model;

fig. 3 is a schematic circuit connection diagram of an HPLC transmitting circuit, an HPLC receiving circuit and a carrier signal coupling circuit in the multimode meter reading device provided by the utility model;

fig. 4 is a schematic circuit connection diagram of an HRF transmitting circuit, an HRF receiving circuit and a matched filter circuit in the multimode meter reading device according to the present utility model.

Reference numerals illustrate:

11. a Bluetooth transceiver circuit; 12. a Bluetooth chip; 20. a dual-mode transceiver chip; 31. HPLC transmit circuitry; 32. HPLC receiving circuitry; 41. an HRF transmission circuit; 42. an HRF receiving circuit; 50. a carrier signal coupling circuit; 60. a matched filter circuit; 70. an antenna.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 and 2, a multi-mode meter reading device according to a first embodiment of the present utility model includes a bluetooth transceiver circuit 11, a bluetooth chip 12, a dual-mode transceiver chip 20, an HPLC transmitter circuit 31, an HPLC receiver circuit 32, an HRF transmitter circuit 41, an HRF receiver circuit 42, a carrier signal coupling circuit 50, a matched filter circuit 60 and an antenna 70, wherein the carrier signal coupling circuit 50 is respectively connected to the HPLC transmitter circuit 31 and the HPLC receiver circuit 32, the matched filter circuit 60 is respectively connected to the antenna 70, the HRF transmitter circuit 41 and the HRF receiver circuit 42, and the bluetooth transceiver circuit 11 is connected to the bluetooth chip 12; the dual-mode transceiver chip 20 is connected to the bluetooth chip 12, the HPLC transmitting circuit 31, the HPLC receiving circuit 32, the HRF transmitting circuit 41 and the HRF receiving circuit 42, respectively.

In this embodiment, the bluetooth data signals received and transmitted by the bluetooth transceiver circuit 11 are processed by the bluetooth chip 12, and all data items of the electric energy meter are read in a short distance. The dual-mode transceiver chip 20 is a control core of the device, and internally integrates a broadband power line carrier transceiver baseband and an HRF transceiver baseband, and can form a broadband power line carrier communication circuit and an HRF wireless communication circuit after being externally matched with a transceiver circuit. The HPLC transmitting circuit 31 is configured to output an HPLC power line carrier signal from the dual-mode transceiver chip 20, modulate the signal with OFDM (Orthogonal Frequency Division Multiplexing ) and amplify the signal, and couple the signal to a power line through a carrier signal coupling circuit after further modulating the signal with OFDM and amplifying the signal. The HPLC receiving circuit 32 is configured to receive the OFDM modulated power line signal coupled from the carrier signal coupling circuit 50, then filter out an interference signal such as narrowband noise, white noise, impulse noise, etc. in the OFDM modulated power line signal through a band-pass filter, and send the OFDM modulated power line signal to the dual-mode transceiver chip 20 after filtering out the noise, where the dual-mode transceiver chip 20 obtains an effective unmodulated signal through internal demodulation processing. The HRF transmitting circuit 41 is configured to output a wireless signal from the dual-mode transceiver chip 20, perform OFDM modulation, amplify the signal, and then radiate electromagnetic waves into air through an antenna to perform wireless transmission through media such as air. The HRF receiving circuit 42 mainly receives the radio electromagnetic wave signal coming in from the antenna end, then filters the radio electromagnetic wave signal by a band-pass filter formed by the matched filtering circuit 60, filters high-frequency noise and low-frequency noise in the electromagnetic wave, and sends the OFDM radio signal to the dual-mode transceiver chip 20, and the dual-mode transceiver chip 20 demodulates the OFDM radio signal to obtain an effective unmodulated signal.

In the above structure, please refer to fig. 1 to 4, in the multi-mode meter reading device provided in this embodiment, the bluetooth transceiver circuit 11 includes a first capacitor C104, a second capacitor C105 and a bluetooth antenna ANT1, and two ends of the first capacitor C104 are respectively connected with a 12 th pin of the bluetooth chip 12 and the bluetooth antenna ANT 1; one end of the second capacitor C105 is connected between the bluetooth antenna ANT1 and the first capacitor C104, and the other end of the second capacitor C105 is grounded. In this embodiment, the bluetooth chip 12 is a model SLC6602A. The dual-mode transceiver chip 20 is an SLC8101A broadband wireless dual-mode transceiver chip 20 produced by Si Ling Ke. The HPLC sending circuit 31 includes a differential line driving chip U1, and the model number of the differential line driving chip U1 is THS6222.

The HPLC receiving circuit 32 includes a band-pass filter, which may be a second-order band-pass filter, a resonance band-pass filter, a SAW (surface acoustic wave) band-pass filter, a BAW (bulk acoustic wave) band-pass filter, a microstrip band-pass filter, a ceramic filter, or the like. The HRF transmission circuit 41 includes a transmission filter. The transmit filter may be an active filter or a passive filter. The HRF receive circuit 42 includes a receive filter. The receiving filter may be an active filter or a passive filter. The carrier signal coupling circuit 50 includes a carrier signal coupler. The carrier signal coupler can be a photoelectric coupler or a magnetic coupler. The matched filter circuit 60 includes a matched filter. The matched filter can be a two-dimensional matched filter or a three-dimensional matched filter, and the matched filter and the three-dimensional matched filter are all within the protection scope of the patent.

As shown in fig. 1 to 4, the multimode meter reading device provided in this embodiment has the following working principle:

the dual-mode transceiver chip 20 is a control core of the multi-mode meter reading device, a broadband power line carrier transceiver baseband and an HRF transceiver baseband are integrated in the dual-mode transceiver chip 20, and a broadband power line carrier communication circuit and an HRF wireless communication circuit can be formed after the dual-mode transceiver chip 20 is externally matched with a transceiver circuit; the power line carrier communication circuit consists of a receiving filter circuit, a transmitting power amplifier circuit and a carrier signal coupling circuit; the HRF wireless communication circuit consists of a filter circuit, a radio frequency PA and other circuits; the dual-mode transceiver chip 20 adopts an SLC8101A broadband wireless dual-mode transceiver chip 20 with intellectual property rights of Si Ling Ke, a broadband power line carrier receiving filter circuit consists of a plurality of resistors, capacitors and inductors, a carrier transmitting power amplifier circuit consists of PA and peripheral circuits, and a carrier signal coupling circuit consists of a coupling coil with specific parameters and a high-voltage capacitor; the HRF wireless filter circuit consists of a capacitor and a high-frequency inductor, and the radio frequency PA circuit consists of a model SKY66115-11 PA chip and a matched peripheral circuit, which are manufactured by Skyworks company; the power supply circuit is powered by weak current and needs to supply 12V direct current voltage to the device, wherein 12V directly supplies power to the power transmission amplifier circuit, 12V is converted into 3.3V direct current after DC-DC, and supplies power to the broadband wireless dual-mode transceiver chip 20 and surrounding components, meanwhile, the power supply circuit is provided with a super capacitor, the broadband dual-mode transceiver chip 20 controls 3.3V to charge the super capacitor during normal power supply, and after 12V is powered down, the super capacitor can supply power to the device for about 90s through the booster circuit; in addition, the device also has an approach Bluetooth communication function, and parameter configuration can be carried out on the device through Bluetooth.

The bluetooth transceiver circuit 11 mainly comprises a first capacitor C104, a second capacitor C105 and a bluetooth antenna ANT1, bluetooth transceiver is realized on the bluetooth chip 12 through the bluetooth antenna ANT1, bluetooth data processing and discrimination are realized, and basic MCU peripheral components are provided. The HPLC sending circuit 31 mainly comprises a differential line driving chip U1, a capacitor C8, a capacitor C20, a resistor R16, a capacitor C13, a resistor R15, a resistor R20, a resistor R9, a resistor R22, a capacitor C9, a capacitor C15 and peripheral resistors and capacitors thereof, so as to form a differential carrier signal line driver. The HPLC receiving circuit 32 is composed of a resistor R1, a resistor R2, a resistor R5, a resistor R6, L2, C4, a capacitor C1, a capacitor C6, L1, L4, L3, a capacitor C5, a resistor R4, a capacitor C2, a capacitor C7, and a resistor R3, so as to form a band-pass filter of 0.7 MHz-12 MHz, and can effectively filter noise interference signals such as impulse noise, white gaussian noise, narrow band noise, etc. The carrier signal coupling circuit 50 mainly consists of capacitors C3 and T1, and couples the board-level broadband power line carrier signal to the power grid environment, so that effective transmission is formed, and meanwhile TVS protection devices V1 and V19 are provided to protect the HPLC network. The HRF transmitting circuit 41, the HRF receiving circuit 42 and the matched filter circuit 60 mainly comprise capacitors C84, L8, capacitors C85, U6, capacitors C83, L3, and capacitors C82, D8, wherein U6 is a wireless power amplifying chip, the capacitors C84, L8, and C85 form a transmitting filter, and the capacitors C83, L3, and C82 form a transmitting matched filter and a receiving filter.

Bluetooth is near-field short-distance communication, the data volume is large, all data items of the electric energy meter can be read in a short distance, meanwhile, a point-to-point communication network can be formed with Bluetooth nodes in a certain range, point-to-point or point-to-multipoint pairing can be realized, after pairing is realized, simple control can be performed on the pairing, and particularly accurate pairing and on-off control can be realized on an intelligent Bluetooth circuit breaker arranged below; different transmission media are respectively used by two communication modes, namely HPLC and HRF, wherein the HPLC utilizes the existing power line, and the HRF utilizes the transmission media such as air; the two communication modes can realize wiring-free, and can realize mixed networking simultaneously, and networking is carried out under the same set of routing equipment and routing mechanism, so that power line carrier interference blind spots and wireless interference blind spots in a real environment can be effectively avoided, and data acquisition of the electric energy meter can be effectively and reliably realized.

The HPLC transmitting circuit 31 is mainly composed of an AFE circuit such as PGA and ADC inside the dual-mode transceiver chip 20, an external power line driving chip, and the like, and is used for implementing the functions of outputting HPLC power line carrier signals from the dual-mode transceiver chip 20, modulating with OFDM, amplifying signals, and coupling the signals to a power line through the carrier signal coupling circuit 50.

The HPLC receiving circuit 32 receives the OFDM modulated power line signal coupled from the carrier signal coupling circuit 50, and then filters out the interference signals such as narrowband noise, white noise, impulse noise and the like in the OFDM modulated power line signal through a band-pass filter built by discrete components with resistance, capacitance and inductance, and sends the OFDM modulated power line signal into the dual-mode transceiver chip 20 after filtering out the noise, and the dual-mode transceiver chip 20 obtains an effective unmodulated signal through internal demodulation processing.

The HRF transmitting circuit 41 mainly comprises an analog front end inside the dual-mode transceiver chip 20, an external RF PA power amplifier, and the like, and is configured to output a wireless signal from the dual-mode transceiver chip 20, perform OFDM modulation, and simultaneously perform a signal amplifying function, amplify the signal, then form electromagnetic waves through the antenna 70, radiate the electromagnetic waves into air, and perform wireless transmission through media such as air.

The HRF receiving circuit 42 mainly receives the radio electromagnetic wave signal coming in from the antenna 70, then filters the radio electromagnetic wave signal by a band-pass filter formed by the matched filtering circuit 60, filters out high-frequency noise and low-frequency noise in the electromagnetic wave, and sends the OFDM radio signal to the dual-mode transceiver chip 20, and the dual-mode transceiver chip 20 demodulates the OFDM radio signal to obtain an effective unmodulated signal.

Compared with the prior art, the multimode meter reading device provided by the embodiment adopts a Bluetooth transceiver circuit, a Bluetooth chip, a dual-mode transceiver chip, an HPLC transmitting circuit, an HPLC receiving circuit, an HRF transmitting circuit, an HRF receiving circuit, a carrier signal coupling circuit, a matched filter circuit and an antenna, wherein the carrier signal coupling circuit is respectively connected with the HPLC transmitting circuit and the HPLC receiving circuit, the matched filter circuit is respectively connected with the antenna, the HRF transmitting circuit and the HRF receiving circuit, and the Bluetooth transceiver circuit is connected with the Bluetooth chip; the dual-mode transceiver chip is respectively connected with the Bluetooth chip, the HPLC transmitting circuit, the HPLC receiving circuit, the HRF transmitting circuit and the HRF receiving circuit. The multi-mode meter reading device provided by the embodiment adopts near-field short-distance communication, has large data volume, can read all data items of the electric energy meter in a short distance, can form a point-to-point communication network with Bluetooth nodes in a certain range, can realize point-to-point or point-to-multipoint pairing, can realize simple control on pairing, and particularly can realize accurate pairing and on-off control on an intelligent Bluetooth circuit breaker arranged below; compatible HPLC and HRF two kinds of communication modes, borrow different transmission media respectively, HPLC is with the help of the existing power line, HRF is with the help of transmission media such as air; the two communication modes can realize wiring-free, and can realize mixed networking simultaneously, and networking is carried out under the same set of routing equipment and routing mechanism, so that power line carrier interference blind spots and wireless interference blind spots in a real environment can be effectively avoided, and data acquisition of the electric energy meter can be effectively and reliably realized.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model. It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. The multi-mode meter reading device is characterized by comprising a Bluetooth transceiver circuit (11), a Bluetooth chip (12), a dual-mode transceiver chip (20), an HPLC transmitting circuit (31), an HPLC receiving circuit (32), an HRF transmitting circuit (41), an HRF receiving circuit (42), a carrier signal coupling circuit (50), a matched filter circuit (60) and an antenna (70), wherein the carrier signal coupling circuit (50) is respectively connected with the HPLC transmitting circuit (31) and the HPLC receiving circuit (32), the matched filter circuit (60) is respectively connected with the antenna (70), the HRF transmitting circuit (41) and the HRF receiving circuit (42), and the Bluetooth transceiver circuit (11) is connected with the Bluetooth chip (12); the dual-mode transceiver chip (20) is respectively connected with the Bluetooth chip (12), the HPLC transmitting circuit (31), the HPLC receiving circuit (32), the HRF transmitting circuit (41) and the HRF receiving circuit (42).

2. The multimode meter reading device according to claim 1, characterized in that the bluetooth transceiver circuit (11) comprises a first capacitor, a second capacitor and a bluetooth antenna, wherein two ends of the first capacitor are respectively connected with a 12 th pin of the bluetooth chip (12) and the bluetooth antenna; one end of the second capacitor is connected between the Bluetooth antenna and the first capacitor, and the other end of the second capacitor is grounded.

3. The multimode meter reading device of claim 2, wherein the bluetooth chip (12) is of the SLC6602A type.

4. The multimode meter reading device of claim 1, wherein the dual mode transceiver chip (20) is an SLC8101A broadband wireless dual mode transceiver chip (20) produced by si Ling Ke.

5. The multimode meter reading device of claim 1, wherein the HPLC send circuit (31) comprises a differential line driver chip, the model of which is THS6222.

6. The multimode meter reading device of claim 1, wherein the HPLC receiving circuit (32) comprises a bandpass filter.

7. The multimode meter reading device of claim 1, wherein the HRF transmit circuit (41) includes a transmit filter.

8. The multimode meter reading device of claim 1, wherein the HRF receive circuit (42) includes a receive filter.

9. A multimode meter reading device as in claim 1, wherein the carrier signal coupling circuit (50) comprises a carrier signal coupler.

10. The multimode meter reading device of claim 1, wherein the matched filter circuit (60) comprises a matched filter.