CN114490486A - Bus hardware architecture for gas meter and gas meter - Google Patents
Bus hardware architecture for gas meter and gas meter Download PDFInfo
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- CN114490486A CN114490486A CN202210105686.5A CN202210105686A CN114490486A CN 114490486 A CN114490486 A CN 114490486A CN 202210105686 A CN202210105686 A CN 202210105686A CN 114490486 A CN114490486 A CN 114490486A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/40—Bus structure
- G06F13/4063—Device-to-bus coupling
- G06F13/4068—Electrical coupling
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0002—Serial port, e.g. RS232C
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2213/00—Indexing scheme relating to interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F2213/0016—Inter-integrated circuit (I2C)
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Abstract
The invention discloses a bus hardware architecture for a gas meter and the gas meter, relates to the technical field of intelligent gas meters, and solves the technical problems that the gas meter in the prior art is adapted by exchanging communication modules, does not have a correspondingly implemented hardware circuit design, and needs to design a multifunctional hardware circuit suitable for the gas meter urgently. The device comprises a function bus and a module slot; the bus hardware architecture is arranged on the gas meter and comprises at least more than two module slots; any module slot can be interchanged; the module slot is provided with a plurality of functional jacks; the functional jacks are matched with the functional buses; the function bus is connected with the gas meter through the module slot. The invention opens various module functions to a bus hardware architecture, provides a multifunctional hardware circuit suitable for the gas meter, and improves the expansibility and the adaptability of the existing gas meter.
Description
Technical Field
The invention relates to the technical field of intelligent gas meters, in particular to a bus hardware architecture for a gas meter and the gas meter.
Background
In the industry of gas meters, communication modules with interchangeability and expansibility have been adopted in some places. The communication modules can conveniently meet the requirements of adaptation and interchange of the communication modules of the gas meter, so that the functions of the communication modules and the functions of the gas metering base meter are mutually separated. Rather than the traditional smart meter, the communication module is tightly fitted into the meter body, tightly coupled together, and not flexibly selectable as required on site. However, if higher design requirements are to be met, the communication module with interchangeability is far from enough.
Currently, when the intellectualization and networking of water, gas and other meters are performed and the fast evolution of a smart city is constructed on the basis of the internet of things technology, the prior art discloses three types of module (type a, type B and type C) definitions of a modular gas meter and three types of bus (Bsa, Bnb and Bnc) definitions corresponding to the three types of module definitions, and discloses an implementation method for the combination and replacement of the three types of modules, aiming at the real technical requirements.
In the process of implementing the invention, the inventor finds that at least the following problems exist in the prior art:
the existing gas meter is adapted by exchanging communication modules, and does not have hardware circuit design implemented correspondingly, so that a multifunctional hardware circuit suitable for the gas meter needs to be designed urgently.
Disclosure of Invention
The invention aims to provide a bus hardware architecture for a gas meter and the gas meter, and aims to solve the technical problems that the gas meter in the prior art is adapted by interchanging communication modules, does not have a correspondingly implemented hardware circuit design, and needs to design a multifunctional hardware circuit suitable for the gas meter. The technical effects that can be produced by the preferred technical scheme in the technical schemes provided by the invention are described in detail in the following.
In order to achieve the purpose, the invention provides the following technical scheme:
the invention provides a bus hardware architecture for a gas meter, which comprises a functional bus and a module slot; the bus hardware architecture is arranged on the gas meter and comprises at least more than two module slots; any module slot can be interchanged; the module slot is provided with a plurality of functional jacks; the functional jacks are matched with the functional buses; and the functional bus is connected with the gas meter through the module slot.
Preferably, the number of the module slots arranged on the gas meter is four; different functional buses are connected with the module slots, and different types of functional modules can be configured.
Preferably, the functional jack comprises a communication interface; the communication interface comprises an I2C communication module, an SPI communication module and an RS485 communication module; any module slot can be provided with one communication module; the communication module is connected and communicated with the gas meter by accessing the functional bus.
Preferably, the communication module further comprises a UART communication module; the UART communication module comprises an RXD jack and a TXD jack; the RXD jack is simultaneously multiplexed with the RXD jacks of a UART2 port and a UART3 port of the internal bus of the gas meter; the multiplexing mode is an AND gate or a wired AND; and the TXD jack of the UART communication module adopts two paths of signals to fan out.
Preferably, the functional jack further comprises a power interface; the power supply interface comprises a power supply module, a dormancy module and a battery module; the power supply module is a GND jack and a VDD jack and is arranged at two ends of the module slot; the sleep module is a Sleepx jack and can control the low-power-consumption operation of the battery; the battery module includes a Bat1 receptacle and a Bat2 receptacle; the battery module can be used for supplying power and monitoring the electric quantity of the battery in an extrapolation mode.
Preferably, the function jack further comprises a metering interface; the metering type interface comprises a Tamp jack, a Pulse1 jack and a Pulse2 jack; the gas meter transmits the metering signals of the gas meter to external equipment through the Pulse1 jack and the Pulse2 jack; the Tamp jack can warn about illegal operation of the gas meter.
Preferably, the functional jack further comprises a valve interface; the valve type interface comprises a valve control module and a valve state module; the valve control module is a Trip + jack and a Trip-jack and can control the state of a built-in valve of the gas meter; the valve state module is an O/C jack and can input an opening and closing signal for controlling a built-in valve of the gas meter.
Preferably, the functional jack further comprises a port line signal interface; the port line signal interface comprises a Mountx jack and an IOx jack; the Mountx jack can manage the plugging and unplugging of the module; the IOx jack can be connected with one or more functional buses, and can realize interrupt and other high-low level IO functions.
Preferably, the functional jack further comprises an antenna interface and a spare interface; the standby interface comprises a Bak1 jack and can be selectively connected into one or more functional buses to realize a standby function; the antenna type interface is an Antx jack, and the communication reliability of the gas meter can be enhanced.
In addition, the invention also provides a gas meter, which comprises a bus hardware architecture; the gas meter can be configured with different types of functional modules through the bus hardware architecture.
The implementation of one of the technical schemes of the invention has the following advantages or beneficial effects:
the invention provides a bus hardware architecture for a gas meter, opens various module functions to the bus hardware architecture, provides a multifunctional hardware circuit suitable for the gas meter, and improves the expansibility and the adaptability of the existing gas meter.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is a schematic structural diagram of a module socket according to an embodiment of the present invention;
fig. 2 is a multiplexing circuit diagram of the UART communication module according to the embodiment of the present invention.
Detailed Description
In order that the objects, aspects and advantages of the present invention will become more apparent, various exemplary embodiments will be described below with reference to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration various exemplary embodiments in which the invention may be practiced. The same numbers in different drawings identify the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. It is to be understood that they are merely examples of processes, methods, apparatus, etc., consistent with certain aspects of the present disclosure, as detailed in the appended claims, and that other embodiments may be used, or structural and functional modifications may be made to the embodiments set forth herein, without departing from the scope and spirit of the present disclosure.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," and the like are used in the orientations and positional relationships illustrated in the accompanying drawings for the purpose of facilitating the description of the present invention and simplifying the description, and do not indicate or imply that the elements so referred to must have a particular orientation, be constructed in a particular orientation, and be operated. The terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. The term "plurality" means two or more. The terms "coupled" and "connected" are to be construed broadly and may include, for example, a fixed connection, a removable connection, a unitary connection, a mechanical connection, an electrical connection, a communicative connection, a direct connection, an indirect connection via intermediate media, and may include, but are not limited to, a connection between two elements or an interactive relationship between two elements. The term "and/or" includes any and all combinations of one or more of the associated listed items. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In order to explain the technical solution of the present invention, the following description is made by way of specific examples, which only show the relevant portions of the embodiments of the present invention.
The first embodiment is as follows:
as shown in fig. 1, the present invention provides a bus hardware architecture for a gas meter, which includes a functional bus and a module slot; the bus hardware architecture is arranged on the gas meter and comprises at least more than two module slots; any module slot can be interchanged; the module slot is provided with a plurality of functional jacks; the functional jacks are matched with the functional buses; the function bus is connected with the gas meter through the module slot. Specifically, the bus hardware architecture is composed of a functional bus and at least two module slots. Wherein, there is no difference between any module slot, the definition of the function jack is different except the accessed communication interface, and the definition of the other function jacks is identical. The gas meter is provided with a bus hardware framework, and the bus hardware framework is connected with the functional jack on the module slot through the functional bus, so that the communication between external equipment and the gas meter can be established. The invention opens various module functions to a bus hardware architecture, provides a multifunctional hardware circuit suitable for the gas meter, and improves the expansibility and the adaptability of the existing gas meter.
As an optional implementation manner, the number of the module slots arranged on the gas meter is four; different function buses are connected with the module slots, and different types of function modules can be configured. Specifically, the gas meter is provided with four module slots as a special case of the bus hardware architecture, which is a preferred scheme of the present invention, and the gas meter can be provided with a plurality of module slots according to industrial requirements. The bus hardware architecture can be accessed with various functional buses, and different functional buses can be combined into different functional modules by being connected with functional jacks on the module slots. The gas meter can flexibly select the functional modules through a bus hardware architecture to form an intelligent gas meter with wider adaptability and stronger expansibility. In addition, the present invention defines 22 functional buses for the functional jacks of the module socket as shown in table 1. Wherein, the definition of the module and bin as shown in table 1 is:
class A, built-in module, optional assembly on the production line in the meter factory. The built-in module is installed in the gas meter, can not be added or deleted on hardware after leaving the factory, and is sealed by a metering supervisory organization to ensure legal management requirements of metering; the connection interface of the A-type module is defined as the southbound bus, denoted as Bsa. And the B type module is an external module, and is plugged and unplugged on site by professional personnel of a public product provider. The external module is installed in the gas meter and can be sealed by professional personnel. Four bin positions 1, 2, 3 and 4 respectively; the connection interface of the class B module is defined as a northbound bus, denoted as Bnb. Class C, with modules, is ultimately user/home selectable for plugging. Four bins 1, 2, 3, 4 respectively. The connection interface of the class C module is defined as the northbound bus, labeled Bnc.
1234 indicates that all slot positions of the bus are communicated and have the same function; 1\2\3\4 represents that the bus functions are the same, and one slot position is selected to be communicated.
The symbols shown in table 1 are the self-defined names of the present embodiment, and in order to conveniently and effectively distinguish the functional buses, in practical application, the names and positions of different functional buses can be adaptively modified.
Table 122 definition of root functional bus
As an optional implementation, the functional jack includes a communication interface; the communication interface comprises an I2C communication module, an SPI communication module and an RS485 communication module; any module slot can be provided with a communication module; the communication module is connected with and communicates with the gas meter through the access function bus. Specifically, as shown in fig. 1, except for the I2C communication module and the SPI communication module, the definitions of the other bus lines are completely consistent, and there is no difference between the module slots, thereby ensuring interchangeability. The I2C communication module, the SPI communication module and the RS485 communication module multiplex two functional jacks of the module slot, and the number of communication interface connecting wires is reduced. In the two module slots shown in fig. 1, the I2C communication module occupies slot 1, slot 2; the SPI communication module occupies 3, 4 slot positions. The design considers that the probability of using the I2C communication module and the SPI communication module is lower than that of the UART communication module in general, and the probability of using the I2C communication module is slightly lower than that of the SPI communication module, so that the flexibility of module exchange and the application scene universality are enhanced. The RS485 communication module has better interchangeability, but can bring larger power consumption and slightly complicated software overhead, and the RS485 communication module is listed as another alternative communication version. The RS485 communication version is incompatible with the I2C communication version and the SPI communication version of the embodiment, but the insertion is wrong, the damage cannot be caused, and a user can easily find the incompatibility, so that the incompatibility is eliminated.
As an alternative embodiment, as shown in fig. 2, the communication module further includes a UART communication module; the UART communication module comprises an RXD jack and a TXD jack; the RXD jack is simultaneously multiplexed with the RXD jacks of a UART2 port and a UART3 port of an internal bus of the gas meter; the multiplexing mode is an AND gate or a wired AND; the TXD jack of the UART communication module adopts two paths of signals to fan out. Specifically, an AND gate or a line and a multiplexing mode are adopted, and two paths of signals are fanned out, so that the effect that one UART communication module is connected with two functional modules is achieved. Two internal UART communication modules of the gas meter communicate with external equipment through a UART communication module of a bus hardware architecture.
As an optional implementation, the functional jack further includes a power source interface; the power supply interface comprises a power supply module, a dormancy module and a battery module; the power supply module is a GND jack and a VDD jack and is arranged at two ends of the module slot; the sleep module is a Sleepx jack and can control the low-power-consumption operation of the battery; the battery module comprises a Bat1 socket and a Bat2 socket; the battery module can be used for externally inserting power supply and monitoring the electric quantity of the battery. Specifically, the GND jack and the VDD jack of the power module are arranged at two ends of the module slot, so that the hot plug function of the functional bus is conveniently realized no matter the functional bus is connected with a golden finger or a contact pin; and secondly, when the functional bus is accessed by a golden finger, the gas meter is less prone to electrical short circuit. The gas meter is distinguished from other intelligent meters by a remarkable characteristic that external power supply (commercial power) cannot be conveniently and safely obtained, and the power is supplied by a battery generally, so that the power consumption index of the gas meter is nearly strict, the intelligent application of the product is severely restricted, and the gas meter is greatly lagged behind the development of the internet of things technology and the practical requirements of social economy on the whole. Therefore, the invention configures the positive pole of the battery and the power supply on-off control function on the module slot. The Bat1 jack is an alkaline battery jack, the Bat2 jack is a lithium battery jack, and the Bat1 jack and the Bat2 jack can provide external plug-in power supply for the gas meter, so that the normal use of the gas meter is ensured. When a signal is provided to the Sleepx jack, the battery can be controlled to enter low power operation.
As an optional implementation, the functional jack further comprises a metering interface; the metering type interface comprises a Tamp jack, a Pulse1 jack and a Pulse2 jack; the gas meter transmits the metering signals of the gas meter to external equipment through a Pulse1 jack and a Pulse2 jack; the Tamp jack can warn about illegal operation of the gas meter. Specifically, the Pulse1 jack and the Pulse2 jack are measurement Pulse jacks, and external equipment can transmit measurement pulses of the gas meter to the external equipment in a measurement signal form through a measurement interface on a bus hardware architecture, so that the measurement data is recorded and remotely transmitted. The Tamp jack is a theft signal jack, corresponding protection monitoring is carried out on the safe operation behavior of the gas meter, and when the illegal operation of the gas meter is found, a warning signal is sent to external equipment.
As an optional implementation, the functional jack further comprises a valve type interface; the valve interface comprises a valve control module and a valve state module; the valve control module is a Trip + jack and a Trip-jack and can control the state of a built-in valve of the gas meter; the valve state module is an O/C jack and can input opening and closing signals of a built-in valve of the control gas meter. Specifically, the external device can control and monitor the state of a valve built in the gas meter through a valve interface on a bus hardware architecture.
As an optional implementation, the functional jack further includes a port line signal interface; the port line signal interface comprises a Mountx jack and an IOx jack; the Mountx jack can manage the plugging and unplugging of the module; IOx jacks may be accessible to one or more functional buses to enable interrupts and other high and low level IO functions. Specifically, the Mountx jack can realize the plug management of the functional module, so that the functional module can be plugged and used, and the power consumption is reduced and the quick response is facilitated. IOx jacks enable access to a functional bus, which may be arbitrarily defined, such as to implement interrupt functions or other high and low level IO functions.
As an optional implementation, the functional jack further includes an antenna interface and a spare interface; the standby interface comprises a Bak1 jack and can be selectively connected with one or more functional buses to realize a standby function; the antenna type interface is an Antx jack, and the communication reliability of the gas meter can be enhanced. Specifically, the antenna is made into a mode of communicating the inside and the outside of the gas meter by the Antx jack, so that the physical size of the antenna can be increased, the radio frequency wiring is more convenient, and the communication reliability and the power consumption index are optimized. The Bak1 jack is an alternative jack that has access to one or more functional buses and is free to define spare functions.
In addition, the invention also provides a gas meter, which comprises a bus hardware architecture; the gas meter can be configured with different types of functional modules through a bus hardware architecture. Specifically, the gas meter is realized based on a bus hardware architecture, and the bus hardware architecture enables the gas meter to have better adaptability and universality, and the corresponding requirements can be changed according to the requirements of users.
The embodiment is only a specific example and does not indicate such an implementation of the invention.
While the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the invention. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the invention without departing from the essential scope thereof. Therefore, it is intended that the invention not be limited to the particular embodiment disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (10)
1. A bus hardware architecture for a gas meter is characterized by comprising a functional bus and a module slot; the bus hardware architecture is arranged on the gas meter and comprises at least more than two module slots; any module slot can be interchanged; the module slot is provided with a plurality of functional jacks; the functional jacks are matched with the functional buses; and the functional bus is connected with the gas meter through the module slot.
2. The bus hardware architecture for a gas meter according to claim 1, wherein the number of the module slots provided on the gas meter is four; different functional buses are connected with the module slots, and different types of functional modules can be configured.
3. The bus hardware architecture for a gas meter according to claim 1, wherein the function jack includes a communication interface; the communication interface comprises an I2C communication module, an SPI communication module and an RS485 communication module; any module slot can be provided with one communication module; the communication module is connected and communicated with the gas meter by accessing the functional bus.
4. The bus hardware architecture for a gas meter according to claim 3, wherein the communication module further includes a UART communication module; the UART communication module comprises an RXD jack and a TXD jack; the RXD jack is simultaneously multiplexed with the RXD jacks of a UART2 port and a UART3 port of the internal bus of the gas meter; the multiplexing mode is an AND gate or a wired AND; and the TXD jack of the UART communication module adopts two paths of signals to fan out.
5. The bus hardware architecture for a gas meter according to claim 1, wherein the functional jack further includes a power interface; the power supply interface comprises a power supply module, a dormancy module and a battery module; the power supply module is a GND jack and a VDD jack and is arranged at two ends of the module slot; the sleep module is a Sleepx jack and can control the low-power-consumption operation of the battery; the battery module includes a Bat1 receptacle and a Bat2 receptacle; the battery module can be used for supplying power and monitoring the electric quantity of the battery in an extrapolation mode.
6. The bus hardware architecture for a gas meter according to claim 1, wherein the function jack further comprises a metering interface; the metering type interface comprises a Tamp jack, a Pulse1 jack and a Pulse2 jack; the gas meter transmits the metering signals of the gas meter to external equipment through the Pulse1 jack and the Pulse2 jack; the Tamp jack can warn about illegal operation of the gas meter.
7. The bus hardware architecture for a gas meter according to claim 1, wherein the function jack further comprises a valve interface; the valve type interface comprises a valve control module and a valve state module; the valve control module is a Trip + jack and a Trip-jack and can control the state of a built-in valve of the gas meter; the valve state module is an O/C jack and can input an opening and closing signal for controlling a built-in valve of the gas meter.
8. The bus hardware architecture for a gas meter according to claim 1, wherein the functional jack further comprises a port signal interface; the port line signal interface comprises a Mountx jack and an IOx jack; the Mountx jack can manage the plugging and unplugging of the module; the IOx jack can be connected with one or more functional buses, and can realize interrupt and other high-low level IO functions.
9. The bus hardware architecture for a gas meter according to claim 1, wherein the functional jack further includes an antenna interface and a backup interface; the standby interface comprises a Bak1 jack and can be selectively connected with one or more functional buses to realize standby functions; the antenna type interface is an Antx jack, and the communication reliability of the gas meter can be enhanced.
10. A gas meter comprising the bus hardware architecture of any of claims 1-9; the gas meter can be configured with different types of functional modules through the bus hardware architecture.
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