CN209821634U

CN209821634U - Integrated high common mode voltage multichannel analog signal collection system with wireless communication function and storage

Info

Publication number: CN209821634U
Application number: CN201920839621.7U
Authority: CN
Inventors: 柯志强; 王德源; 李�浩; 周琳
Original assignee: Guangdong Si Annovi Intelligent Technology Co Ltd
Current assignee: Guangdong Si Annovi Intelligent Technology Co Ltd
Priority date: 2019-06-03
Filing date: 2019-06-03
Publication date: 2019-12-20
Anticipated expiration: 2029-06-03

Abstract

The utility model relates to a gateway technical field, in particular to integrated high common mode voltage multichannel analog signal collection system who takes wireless communication function and storage. The wireless baseband interface is connected with the processor, the direct-current voltage conversion module LDO, the analog-digital conversion circuit ADC and the wireless baseband interface, wherein the direct-current voltage conversion module LDO, the analog-digital conversion circuit ADC and the wireless baseband interface are respectively electrically connected with the processor, the input end of the analog-digital conversion circuit ADC is connected with a multi-path selection matrix, the input end of the multi-path selection matrix is respectively connected with the voltage of each path of terminal, and the processor is further connected with. The multi-channel acquisition chip has multi-channel acquisition, meanwhile, the common-mode voltage can reach more than 60V, and the multi-channel acquisition chip can work in an electrical environment of less than 60V through the internal integrated LDO chip; besides a possible common communication interface, the multi-channel acquisition chip integrates other serial communication interfaces and a short-distance wireless communication functional module.

Description

Integrated high common mode voltage multichannel analog signal collection system with wireless communication function and storage

Technical Field

The utility model relates to a multichannel analog signal gathers technical field, in particular to integrated high common mode voltage multichannel analog signal collection system who takes wireless communication function and storage.

Background

In the battery pack, the performance of the whole battery pack is determined by the single battery with the worst performance in the battery pack, and the terminal voltage of the battery pack can best represent the current state of the battery pack in all parameters representing the performance of the battery pack, so that the low-cost realization of measuring the voltages of a plurality of single batteries in the battery pack is an important technology for reducing the cost and protecting the battery pack. The general electric automobile is equipped with 10-30 batteries, the voltage range of a single body (module) is 3-20V, the batteries are connected in series when in use, and the voltage of the storage battery terminal reaches more than 200V. This makes the measurement circuit design prone to the following problems: the number of required elements is large due to the fact that measuring points are multiple; measurement errors are caused by the fact that the parameters of the elements of the same type are inconsistent; high requirement on element voltage resistance, high cost of the measuring circuit and the like. The common mode measurement is to measure the voltage of each point by using the equal proportional attenuation of a precision resistor relative to the same reference point, and then the voltage of each battery is obtained by subtracting the voltages in sequence. The method has simple circuit, but the measurement precision is reduced in equal proportion, and the method is only suitable for occasions with less series batteries or low requirement on the measurement precision.

Disclosure of Invention

An object of the utility model is to avoid the weak point among the above-mentioned prior art and provide a high common mode voltage multichannel analog signal collection system who can provide integrated band wireless communication function and storage that measurement accuracy is high.

The integrated high-common-mode voltage multi-path analog signal acquisition system with the wireless communication function and the storage function comprises a processor, and a direct-current voltage conversion module LDO, an analog-digital conversion circuit ADC and a wireless baseband interface which are electrically connected with the processor respectively, wherein the input end of the analog-digital conversion circuit ADC is connected with a multi-path selection matrix, the input end of the multi-path selection matrix is connected with the terminal voltage of each path respectively, and the processor is further connected with a level conversion circuit IIC and a serial port circuit.

Wherein, the processor is also connected with one or two of an SPI communication interface and a UART communication interface.

The processor is also connected with a storage unit EEPROM.

The input end of the direct current voltage conversion module LDO is electrically connected with an enabling switch.

The WiMAX system comprises a wireless baseband interface, a WiMAX module and a Mini-PCI board card, wherein the WiMAX module comprises the Mini-PCI board card, a PCI interface and a WiMAX-FPGA which are sequentially connected, the Mini-PCI board card is connected with the wireless baseband interface, and the WiMAX-FPGA is communicated with a processor.

The PCI interface comprises a signal chip with the model number of PCI 9054.

Wherein, the WiMAX-FPGA module comprises a communication chip with the model of XC2V6000

The utility model has the advantages that:

the multi-channel acquisition chip has multi-channel acquisition, meanwhile, the common-mode voltage can reach more than 60V, and the multi-channel acquisition chip can work in an electrical environment of less than 60V through the internal integrated LDO chip; the multi-path acquisition chip integrates a short-distance wireless communication functional module besides possible common communication interfaces (including SPI, UART, IIC and other serial communication interfaces); the multi-channel acquisition chip integrates a data storage function; after the format conversion of the signal data, the wireless WiMAX data enters the EPON system and is processed into an Ethernet frame form to be transmitted, so that the WiMAX can better match the high rate of the EPON system, thereby ensuring that the uplink and downlink transmission of the data between the EPON system and the user site can be realized at a higher speed.

Drawings

The present invention is further explained by using the drawings, but the embodiments in the drawings do not constitute any limitation to the present invention, and for those skilled in the art, other drawings can be obtained according to the following drawings without any inventive work.

Fig. 1 is a schematic diagram of a multi-channel acquisition chip with multi-channel acquisition signals.

Fig. 2 is a structural diagram of a high common mode voltage multi-channel analog signal acquisition system integrated with a wireless communication function and storage.

Detailed Description

The integrated high common mode voltage multi-channel analog signal acquisition system with wireless communication function and storage is further described with reference to the following embodiments.

As shown in fig. 1, the integrated high common mode voltage multi-channel analog signal collection system with wireless communication function and storage of this embodiment includes a processor, and a dc voltage conversion module LDO, an analog-to-digital conversion circuit ADC and a wireless baseband interface electrically connected to the processor, respectively, an enable switch is electrically connected to an input terminal of the dc voltage conversion module LDO, a multi-channel selection matrix is connected to an input terminal of the analog-to-digital conversion circuit ADC, the input terminal of the multi-channel selection matrix is connected to terminal voltages of each channel, respectively, the processor is further connected to a level conversion circuit IIC and a serial circuit, and one or both of an SPI communication interface and a UART communication interface, and the processor is further connected to a storage unit EEPROM.

The integrated high common mode voltage multi-channel analog signal acquisition system with the wireless communication function and the storage function is additionally provided with the wireless communication module, so that a peripheral conventional wired communication interface can be omitted, and peripheral devices of a communication bus, including a communication driving device, a communication isolation device and related wiring harnesses, required by part of application fields are reduced. The volume and the weight of the product can be reduced, and the light application is realized; the internal data storage function is added, historical data and key parameters acquired by analog signals can be recorded, the intervention of other storage units can be independent, the size is reduced, and a modularized mobile application occasion is realized; the design of the integrated multi-path selection holding circuit can realize the acquisition of high-speed time-sharing high common-mode voltage, and the common-mode voltage can be more than or equal to DC 60V.

The WiMAX system comprises a wireless baseband interface, a processor and a micro-PCI (peripheral component interconnect-peripheral) module, wherein the wireless baseband interface is internally provided with the WiMAX module which comprises a Mini-PCI board card, a PCI interface and a WiMAX-FPGA which are sequentially connected, the Mini-PCI board card is connected with the wireless baseband interface, and the WiMAX-FPGA is communicated with the processor. As shown in fig. 2, the Mini-PCI board is connected to the WiMAX-FPGA, which is a dedicated FPGA module of the WiMAX module, through a PCI interface. The Mini-PCI board card completes the conversion of the intermediate frequency signal and the radio frequency signal, the sending and receiving of the physical layer protocol OFDM special signal, the MAC protocol processing of the WiMAX signal and the CRC check. The PCI interface may be, but is not limited to, a PCI 9054 chip of PLX corporation, and converts a cumbersome PCI bus interface into a simple user interface, which is convenient for a user to design hardware interface control and register configuration. The WiMAX-FPGA module can be but not limited to a chip with the model of XC2V6000 and is used for realizing various data processing processes including downlink frame analysis, uplink frame encapsulation, downlink payload caching, uplink payload caching, interface and transmission control and realizing the function of format conversion from MAC PDU to Ethernet frame.

It should be finally noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and not to limit the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified or replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The integrated high-common-mode voltage multi-path analog signal acquisition system with the wireless communication function and the storage function is characterized by comprising a processor, and a direct-current voltage conversion module LDO, an analog-to-digital conversion circuit ADC and a wireless baseband interface which are respectively electrically connected with the processor, wherein the input end of the analog-to-digital conversion circuit ADC is connected with a multi-path selection matrix, the input end of the multi-path selection matrix is respectively connected with the voltage of each path, and the processor is further connected with a level conversion circuit IIC and a serial port circuit.

2. The integrated high common-mode voltage multi-channel analog signal acquisition system with wireless communication function and storage according to claim 1, wherein the processor is further connected with one or both of an SPI communication interface and a UART communication interface.

3. The integrated high common-mode voltage multi-channel analog signal acquisition system with wireless communication function and storage according to claim 1, wherein the processor is further connected with a storage unit EEPROM.

4. The integrated high common-mode voltage multi-path analog signal acquisition system with wireless communication function and storage function of claim 1, wherein an enable switch is electrically connected to an input end of the direct current voltage conversion module LDO.

5. The integrated high common mode voltage multichannel analog signal acquisition system with wireless communication function and storage of claim 1, characterized in that, the wireless baseband interface is equipped with the WiMAX module including Mini-PCI board card, PCI interface and WiMAX-FPGA that connect gradually, the Mini-PCI board card is connected to the wireless baseband interface, the WiMAX-FPGA communicates with the processor.

6. The integrated high common-mode voltage multi-channel analog signal acquisition system with wireless communication function and storage function of claim 5, wherein the PCI interface comprises a signal chip with a model number of PCI 9054.

7. The integrated high common-mode voltage multi-channel analog signal acquisition system with wireless communication function and storage of claim 5, wherein the WiMAX-FPGA module comprises a communication chip with model number XC2V 6000.