CN219872367U - Metering system and metering instrument - Google Patents

Abstract

The utility model provides a metering system and a metering instrument, which relate to the field of metering equipment, wherein the metering system comprises: a processor, a metering part and a business application part; the processor includes a first processing core and a second processing core; the input end of the metering part is used for receiving a metering signal, the output end of the metering part is connected with the first processing core, and the first processing core is used for metering according to the metering signal; the input end of the service application part is used for receiving a service processing signal, the output end of the service application part is connected with the second processing core, and the second processing core is used for performing service processing according to the service processing signal. The system can realize the separation of metering and business processing and ensure the safety of the metering processing process.

Description

Metering system and metering instrument

Technical Field

The utility model relates to the field of metering equipment, in particular to a metering system and a metering instrument.

Background

With the development of electronic information, the requirements of people on the functions of intelligent instruments are higher and higher, and the realization of software is complex. When a certain function of the meter is added or modified, the metering logic processing of the meter is easy to interfere, so that metering processing abnormality is caused, and the safety performance is not high.

Currently, for independent design of metering processing and application processing, a common implementation manner is to use two mcu processors, one mcu is used for metering logic processing, and the other mcu is used for application processing. Although the metering separation can be realized through the two mcus, the metering separation needs two independent mcus, so that on one hand, the safety is low, and on the other hand, the corresponding peripheral circuit of the mcu needs to be added, so that the board distribution of the whole circuit becomes more difficult, the hardware cost is increased, and the problems that the running current of the whole system is increased and the service life of a battery is influenced can be brought.

Disclosure of Invention

In view of the above, the present utility model aims to provide a metering system and a metering apparatus, which can solve the existing problems in a targeted manner.

In view of the above object, the present utility model proposes, in a first aspect, a metering system comprising: a processor, a metering part and a business application part; the processor includes a first processing core and a second processing core; the input end of the metering part is used for receiving a metering signal, the output end of the metering part is connected with the first processing core, and the first processing core is used for metering according to the metering signal; the input end of the service application part is used for receiving a service processing signal, the output end of the service application part is connected with the second processing core, and the second processing core is used for performing service processing according to the service processing signal.

Optionally, the metering system comprises: a power supply; the power supply is connected with the processor and used for providing working voltages for the processor, the metering part and the service application part; the power supply comprises a battery module and an external power supply interface, and the external power supply interface is used for being connected with an external power supply.

Optionally, the first processing core is a processor core with a metering processing function, and the first processing core and the second processing core are connected through a secure channel.

Optionally, the service application part includes a man-machine interaction device and a communication device, wherein the man-machine interaction device and the communication device are both connected with the second processing core, the communication device includes a remote communication device and a local communication device, and the man-machine interaction device is connected with the remote communication device and the local communication device.

Optionally, the service application part further comprises a pulse output device and an alarm device which are connected with each other, wherein the pulse output device and the alarm device are both connected with the second processing core, the pulse output device is used for outputting pulse signals and digital signals, and sending the digital signals to the pulse output device, and the pulse signals are used for processing the metering parameters.

Optionally, the service application part further comprises a memory, and the memory is used for storing operation data of the service application part.

Optionally, an input of the metering portion is configured to receive a metering signal, where the metering signal includes at least one of a temperature signal, a pressure signal, a transducer signal, and a pulse signal.

Optionally, the processor is of the type LPC55S6.

Optionally, the communication mode of the remote communication device includes at least one of GPRS, narrowband communication NB, 4G, short message, and ethernet; the communication mode of the local communication device comprises at least one of RS485, RS232, infrared communication, bluetooth communication and IC.

In a second aspect, there is also provided a metrology instrument comprising a housing and a metrology system according to any of the first aspects.

In general, the present utility model has at least the following benefits:

providing a metering system comprising a processor, a metering part and a business application part, wherein the processor comprises a first processing core and a second processing core; the input end of the metering part is used for receiving a metering signal, the output end of the metering part is connected with the first processing core, and the first processing core is used for performing metering processing according to the metering signal; the input end of the business application part is used for receiving the business processing signal, the output end of the business application part is connected with the second processing core, and the second processing core is used for carrying out business processing according to the business processing signal. The metering part is connected with the first processing core, the service application part is connected with the second processing core, the first processing core is used for processing metering data sent by the metering part, and the second processing core is used for processing service data sent by the service application part, so that the separation of metering and service can be realized, the data safety is ensured, and meanwhile, as only one processor is arranged, the circuit elements can be reduced, and the layout difficulty of a circuit board is reduced.

Drawings

In the drawings, the same reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily drawn to scale. It is appreciated that these drawings depict only some embodiments according to the disclosure and are not therefore to be considered limiting of its scope.

FIG. 1 illustrates an architecture diagram of a metering system of the present utility model;

FIG. 2 illustrates an architecture diagram of another metering system in accordance with an embodiment of the present utility model;

fig. 3 shows a schematic diagram of a metering device according to an embodiment of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the utility model and are not limiting of the utility model. It should be noted that, for convenience of description, only the portions related to the present utility model are shown in the drawings.

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

Fig. 1 shows an architecture diagram of a metering system of the present utility model. Referring to fig. 1, in an embodiment of the present utility model, a metering system includes: the processor 101, the metering unit 102, and the service application unit 103 are connected to the processor 101, respectively, so that the processor 101 can receive metering data transmitted by the metering unit 102, and service data transmitted by the service application unit 103.

In this embodiment, the processor 101 includes a first processing core 1011 and a second processing core 1012, where the first processing core 1011 and the second processing core 1012 in this embodiment are CPUs, that is, the processor 101 is a dual-core processor, for example, the processor 101 is a processor having a Cortex-M23 architecture.

In one example, the processor 101 of the present embodiment may be a processor with two or more cores, such as a three-core processor, where metering and service processing are separated. For ease of illustration, the present embodiment uses a dual core processor as an example.

In this embodiment, the metering portion 102 is connected to the first processing core 1011, the service application portion 103 is connected to the second processing core 1012, the first processing core 1011 is used for processing metering data sent by the metering portion 102, and the second processing core 1012 is used for processing service data sent by the service application portion 103, so that separation of metering and service can be achieved, and data security is ensured.

In this embodiment, the metering portion 102 includes an input end and an output end, the input end of the metering portion 102 is configured to receive a metering signal, where the metering signal may be a temperature signal, a pressure signal, a flow signal, etc., and the output end of the metering portion 102 is connected to the first processing core 1011 and configured to send the metering signal to the first processing core 1011, or after the metering portion 102 processes the metering signal, send a processed signal corresponding to the metering signal to the first processing core 1011, and the first processing core 1011 is configured to perform metering processing according to the metering signal, for example, perform filtering processing and metering calculation on the metering signal, so as to obtain metering data meeting requirements.

In this embodiment, the input end of the service application portion 103 is configured to receive a service processing signal, and the output end of the service application portion 103 is connected to the second processing core 1012, so as to send the service processing signal to the second processing core 1012, where the second processing core 1012 is configured to perform service processing according to the service processing signal. The service processing signals in this embodiment include man-machine interaction signals, alarm signals, communication signals, data storage signals, pulse signals, and the like, which are input by a user.

The metering system of the present embodiment further includes a power supply 104, where the power supply 104 is connected to the processor 101 and is configured to provide operating voltages to the processor 101, the metering section 102, and the service application section 103.

In one example, the power supply 104 has two power supply modes, and referring to fig. 2, the power supply 104 includes a battery module 1041 and an external power supply interface 1042, and the external power supply interface 1042 is used to connect to an external power supply. In an example, the power supply 104 may also monitor a power supply state, and in a case where the power supply 104 is not connected to an external power supply, the battery module 1041 is used to supply power to the system of the embodiment, so as to ensure that the system of the embodiment can still operate in a power failure state. In the case where the power supply 104 is connected to an external power supply, the external power supply supplies power to the system in this embodiment, where the voltage type and the voltage level of the external power supply may be selected according to the actual working conditions, and the external power supply may be DC or ac, and the voltage level may be DC5V or DC 9-24V.

In one example, the first processing core 1011 is a processor core with a metering processing function, for example, the first processing core 1011 includes a processor core supporting a trust zone technology, where the trust zone technology may prevent an untrusted application from directly accessing a security critical resource, and the core supporting the trust zone technology is used for metering logic processing, and may ensure security of the metering logic application.

In this embodiment, the first processing core 1011 and the second processing core 1012 are connected through a secure channel, so that when the second processing core 1012 needs to call the data in the first processing core 1011, the data transmission between the first processing core 1011 and the second processing core 1012 is realized. The second processing core 1012 may retrieve data in the first processing core 1011 including operating condition instantaneous flow, target condition instantaneous flow, operating condition volume, target condition volume, current medium temperature, current medium pressure, metering alarm, etc.

In one embodiment, the processor is of the type LPC55S6, and the Secure channel between the first processing core 1011 and the second processing core 1012 is a Secure Entry channel. The metering program for processing the metering data can be preset in the first processing core 1011, and the service program for processing the service data can be preset in the second processing core 1012, and since the first processing core 1011 and the second processing core 1012 support the trust zone technology, the safety of program operation is high and the metering is reliable.

Fig. 2 shows an architecture diagram of another metering system of the present utility model. Referring to fig. 2, in this embodiment, the service application portion 103 includes a man-machine interaction device 1031 and a communication device, where the man-machine interaction device 1031 and the communication device are both connected to the second processing core 1012, the communication device includes a remote communication device 1032 and a local communication device 1035, and the man-machine interaction device 1031 is connected to the remote communication device 1032 and the local communication device 1035.

The man-machine interaction device 1031 may be a device with a touch display screen and control keys, and the man-machine interaction device 1031 may be connected with the remote communication device 1032 and the local communication device 1035 to obtain cloud or local data. The touch display screen is used for displaying data such as metering data, running state, time, alarm codes, program versions and the like, and the metering data can comprise working condition instantaneous flow, standard condition instantaneous flow, working condition volume, standard condition volume, current medium temperature and current medium pressure. The user may operate the virtual key by touching the display screen or perform specific operations such as screen cutting, parameter setting, and triggering remote communication by operating the control key, and the second processing core 1012 may further implement functions such as settlement function, valve control, and current output according to the operation of the user.

In this embodiment, the remote communication device 1032 may be a signal transceiver, and may communicate with the data center through a wireless channel, so as to implement data transmission between the system and the cloud end, so as to obtain current operation data and status, alarm event, remote parameter reading and configuration.

In this embodiment, the communication mode of the remote communication device includes at least one of GPRS, narrowband NB, and 4G, and may also be other remote communication modes.

In this embodiment, the local communication device 1035 may be a communication bus or an infrared receiver or a bluetooth device, and the local communication device 1035 may communicate through a local interface to read functions such as current running data and status, data recording, and alarm event recording, and in this embodiment, the communication mode of the local communication device includes at least one of RS485, RS232, infrared communication, bluetooth communication, and IC, and then the local interface may be an RS485 bus interface or an RS232 bus interface or an infrared interface or a bluetooth interface or an IC interface, respectively.

In this embodiment, the service application part 103 further includes a pulse output device 1033 and an alarm device 1036 that are connected to each other, where the pulse output device 1033 and the alarm device 1036 are both connected to the second processing core 1012, and the pulse output device 1033 is configured to output a pulse signal and a digital signal, and send the digital signal to the pulse output device, and the pulse signal is configured to process the metering parameter.

In this embodiment, the pulse output device 1033 may be a pulse generator, and the pulse signal output by the pulse output device 1033 may be a working condition pulse signal or an IC pulse signal, where the working condition pulse signal is used for verification of the metering accuracy level, and the IC pulse signal is used for collecting the volume by the field device.

In this embodiment, the digital quantity signal output by the pulse output device 1033 may be used to output alarm information to the field device when an alarm event occurs.

In this embodiment, the alarm device 1036 may be an alarm device, and is configured to generate an alarm event and send out a light or sound alarm signal when a problem such as a failure in acquisition of a metering signal, an abnormal remote communication, etc. occurs.

In this embodiment, the service application unit 103 further includes a memory 1034, and the memory 1034 is used to store operation data of the service application unit 103. For example, the storage of hour data, day data, and month data is implemented by memory 1034, while various metering data including Kuang Shunshi flow, target instantaneous flow, target volume, current medium temperature, current medium pressure, time date, and alarm codes, etc. may also be stored.

The man-machine interaction device 1031, the remote communication device 1032, the pulse output device 1033, the memory 1034, the local communication device 1035 and the alarm device 1036 are connected to the second processing core 1012, and the second processing core 1012 controls the above devices, so as to separate metering and service processing.

The metering signals received by the metering unit 102 may be various according to the metering principle of different flow meters. The metering signals include temperature signals, pressure signals, transducer signals, pulse signals, etc. When the flowmeter is an ultrasonic flowmeter, the metering signal can be a combination of a transducer signal and temperature and pressure signals. When the flow meter is a turbine flow meter, the metering signal is a combination of temperature signal, pressure and pulse signal. I.e. the type and combination of metering signals that a person can input according to different designs of the meter metering principle.

In this embodiment, taking an ultrasonic flowmeter as an example, the metering portion 102 includes a sensor 1021 and a transducer 1022, the sensor 1021 is configured to collect a metering signal of a preset type in an environment to be measured, and the transducer 1022 is configured to output a transducer signal including time-of-flight information.

The above is the metering system provided in this embodiment, through the dual-core structure of the dual-core processor, the first processing core 1011 performs metering processing, and the second processing core 1012 performs service processing, so that under the condition of using one processor, the safety of the metering processing process can be ensured while the metering and service processing are separated, and meanwhile, the number of circuit components in the system can be reduced by adopting one processor, the PCB layout difficulty is reduced, meanwhile, due to the reduction of the circuit components, the running current can be reduced, and the service life of the battery is prolonged.

Fig. 3 shows a schematic view of a metrology instrument according to an embodiment of the present utility model. As shown in fig. 3, the meter includes: a housing 1031, and a metering system 1032, the metering system 1032 comprising the metering system provided by the above embodiments, such as the metering system shown in fig. 1 or 2.

Referring to fig. 1, the metering system includes: a processor 101, a metering section 102, and a service application section 103, the processor 101 including a first processing core 1011 and a second processing core 1012; the input end of the metering part 102 is used for receiving a metering signal, the output end of the metering part 102 is connected with the first processing core 1011, and the first processing core 1011 is used for performing metering processing according to the metering signal; the input end of the service application part 103 is configured to receive a service processing signal, the output end of the service application part 103 is connected to the second processing core 1012, and the second processing core 1012 is configured to perform service processing according to the service processing signal. The structure and function of the specific metering system are described in the above embodiments, and in order to avoid repetition, the description is omitted here.

In one example, the meter of the present embodiment may be a natural gas flowmeter, a turbine flowmeter or a roots flowmeter, or a meter such as an electric energy meter or a water meter.

The metering device provided by the above embodiment of the present utility model has the same advantageous effects as the method adopted, operated or implemented by the application program stored therein, because of the same inventive concept as the metering system provided by the embodiment of the present utility model.

It should be noted that:

the algorithms and displays presented herein are not inherently related to any particular computer, virtual system, or other apparatus. Various general-purpose systems may also be used with the teachings herein. The required structure for a construction of such a system is apparent from the description above. In addition, the present utility model is not directed to any particular programming language. It will be appreciated that the teachings of the present utility model described herein may be implemented in a variety of programming languages, and the above description of specific languages is provided for disclosure of enablement and best mode of the present utility model.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Similarly, it should be appreciated that in the above description of exemplary embodiments of the utility model, various features of the utility model are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be construed as reflecting the intention that: i.e., the claimed utility model requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this utility model.

Those skilled in the art will appreciate that the modules in the apparatus of the embodiments may be adaptively changed and disposed in one or more apparatuses different from the embodiments. The modules or units or components of the embodiments may be combined into one module or unit or component and, furthermore, they may be divided into a plurality of sub-modules or sub-units or sub-components. Any combination of all features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or units of any method or apparatus so disclosed, may be used in combination, except insofar as at least some of such features and/or processes or units are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features but not others included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the utility model and form different embodiments. For example, in the following claims, any of the claimed embodiments can be used in any combination.

Various component embodiments of the utility model may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that some or all of the functions of some or all of the components in a virtual machine creation system according to embodiments of the utility model may be implemented in practice using a microprocessor or Digital Signal Processor (DSP). The present utility model can also be implemented as an apparatus or system program (e.g., a computer program and a computer program product) for performing a portion or all of the methods described herein. Such a program embodying the present utility model may be stored on a computer readable medium, or may have the form of one or more signals. Such signals may be downloaded from an internet website, provided on a carrier signal, or provided in any other form.

It should be noted that the above-mentioned embodiments illustrate rather than limit the utility model, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The utility model may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The use of the words first, second, third, etc. do not denote any order. These words may be interpreted as names.

The foregoing is merely illustrative of the present utility model, and the present utility model is not limited thereto, and any person skilled in the art will readily recognize that various changes and substitutions are possible within the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims (10)

1. A metering system, the metering system comprising: a processor, a metering part and a business application part;

the processor includes a first processing core and a second processing core;

the metering part comprises a sensor and a transducer, the input end of the metering part is used for receiving a metering signal, and the output end of the metering part is connected with the first processing core;

the business application part comprises a man-machine interaction device and a communication device, the input end of the business application part is used for receiving business processing signals, and the output end of the business application part is connected with the second processing core.

2. The metering system of claim 1, wherein the metering system comprises: a power supply;

the power supply is connected with the processor and used for providing working voltages for the processor, the metering part and the service application part;

the power supply comprises a battery module and an external power supply interface, and the external power supply interface is used for being connected with an external power supply.

3. The metering system of claim 1 wherein the metering system is configured to meter the metering system,

the first processing core is a processor core with a metering processing function, and the first processing core and the second processing core are connected through a secure channel.

4. The metering system of claim 1 wherein the human-machine interaction device and the communication device are both coupled to the second processing core, the communication device comprising a remote communication device and a local communication device, the human-machine interaction device being coupled to the remote communication device and the local communication device.

5. The metering system of claim 4 wherein the service applicator further comprises an interconnected pulse output device and alarm device,

the pulse output device and the alarm device are both connected with the second processing core, the pulse output device is used for outputting pulse signals and digital signals, the digital signals are sent to the pulse output device, and the pulse signals are used for processing metering parameters.

6. The metering system of claim 4 or 5 wherein the service application further comprises a memory for storing operational data of the service application.

7. The metering system of claim 1, wherein an input of the metering section is configured to receive a metering signal, the metering signal comprising at least one of a temperature signal, a pressure signal, a transducer signal, and a pulse signal.

8. A metering system as claimed in claim 1 wherein the processor is of the type LPC55S6.

9. The metering system of claim 4 wherein the communication means of the remote communication device comprises at least one of GPRS, narrowband NB, 4G, sms, ethernet;

the communication mode of the local communication device comprises at least one of RS485, RS232, infrared communication, bluetooth communication and IC.

10. A metering instrument comprising a housing and the metering system of any one of claims 1 to 9.