CN214473082U - Modular-design gas live detection equipment - Google Patents
Modular-design gas live detection equipment Download PDFInfo
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Abstract
A gas live detection device with modular design comprises a power module, a main control unit and a plurality of detection modules or sensing modules; the power module is provided with a self-defined first standard interface and a self-defined second standard interface which are both a combination of a power interface and an RS485 communication interface, the power interface in the first standard interface provides power for the main control unit, and the power interface in the second standard interface provides power for each detection module; the main control unit is provided with a standard interface formed by combining a power supply interface and an RS485 communication interface, and the standard interface is correspondingly and electrically connected with the first standard interface; each detection module or each sensing module is provided with a bus interface, namely a power interface and an RS485 bus interface, and each detection module is electrically connected with the second standard interface through the corresponding bus interface; the utility model discloses simple structure, design benefit, connection simple to operate, the wiring is clear, can reduce designer's repeated work load.
Description
Technical Field
The utility model relates to a check out test set field, concretely relates to gaseous electrified check out test set of modular design.
Background
The dynamic integration process of splitting a complex system into different modules and communicating information between the modules through standardized interfaces is called modularization. The modularization is divided into a narrow sense and a broad sense, the narrow sense modularization refers to modularization of product production and process design, and the broad sense modularization refers to a dynamic integration process of module decomposition and module concentration of a system (including products, production organizations, processes and the like). The development of modularization has advanced in different fields.
SF since the 80 s of the 20 th century6The electrical equipment gradually replaces the insulating oil electrical equipment and becomes the mainstream equipment of high-voltage electricity of the power grid system in China. By 2010, SF6Electrical equipment has basically achieved popularity in China. And SF6The detection equipment is also based on the field test condition and the test requirement, the measurement type and the measurement method are continuously expanded, and the combination mode of the instrument equipment is more and more. The modular design concept of the gas detection instrument exists from the first generation instrument to the present, and is continuously perfected and broken through.
In a traditional design method, a main control board or a main control unit and a plurality of sensing modules or sensing units are usually arranged in an instrument, and peripheral interfaces are reserved at the edge of the main control board, so that the sensing units are conveniently expanded. The modular design scheme only realizes simple function separation, but does not really realize complete independence, universality and interchangeability modularization. For some sensing units which are already mature to be applied to other devices, new meters still need to be redesigned to be added during development, or reserved interfaces are insufficient or not considered, and need to be redesigned. The design method has poor flexibility and standard interfaces, and increases the repeated labor workload of designers. Designers often advance due to the load because of short development period, large amount of tasks and large pressure.
For example, in the early design scheme of instrument modularization (see fig. 1 of the accompanying drawings), a main control board, sometimes called a main control unit, is a control pivot of the whole gas detection instrument, a power module is arranged on the main control board, all sensing modules and sensing units are all connected to the main control board in a butt joint mode, and a power module interface on the main control board is connected with an external power supply and supplies power to different sensing modules and sensing units after voltage transformation processing of the power module. The design method has the advantages of clear thought, convenient design and simple structure. However, all power supplies are externally connected through the main control board, which results in that:
1. the power module and the control signal are in the same main control board, and the control signal is interfered by the power signal, so that errors are easy to occur, and the stability of an instrument system is influenced; 2. the main control board has multiple functions, complex design, large size and inconvenient installation; 3. the core control device CPU of the main control board can generate temperature rise when running, and peripheral low-temperature heat dissipation is needed. The display screen and the like carried by the main control board belong to high-power devices, and all sensing modules are externally connected by the main control board, namely all currents are evenly output by the main control board, so that the circuit board is heated due to the carrying problem, the temperature rise of a CPU (central processing unit) of a core device is accelerated, and the heat dissipation of the CPU is influenced;
4. the reserved interface is limited in advance, so that the resources of an external sensing unit (module) are limited; 5. when the newly accessed sensing unit (module) interface is inconsistent with the reserved interface of the main control board, the main control board needs to be redesigned; 6. besides being connected with a main control board, each sensing unit (module) needs to be connected with a power panel, and the whole instrument is messy in connection and not beneficial to debugging personnel to troubleshoot problems.
In some instrument modular design improvement schemes (see attached figure 2), a power supply module on a main control board is extracted, and an independent power supply module is designed to supply power for each sensing unit (module), so that the improvement schemes reasonably avoid the problems of 1, 2 and 3, but do not have the power for problems 4 and 5. In addition, each sensing unit (module) needs to be connected with a power panel besides being connected with the main control panel, so that the whole circuit connection is messy, and debugging personnel are not facilitated to troubleshoot the problems.
Therefore, the gas live detection equipment which is simple in structure, convenient to install, clear in wiring, capable of reducing the repeated labor workload of designers, serialized, combinative, generalized and standardized is researched and developed, and the gas live detection equipment has a wide market prospect.
Disclosure of Invention
Not enough to prior art, the utility model provides a simple structure, simple to operate, wiring are clear, convenient investigation problem, the gaseous electrified check out test set of the modularized design of reducible designer's repeated work load.
The utility model adopts the technical proposal that: a gas live detection device with a modular design comprises a power supply module, a main control unit and a plurality of detection modules or sensing modules, wherein the power supply module, the main control unit and each detection module are independently designed;
the power supply module is also provided with an RS485 communication switching circuit module, the edge of the power panel is provided with two communication interfaces electrically connected with the communication switching circuit, a power supply interface of the power supply main control unit and one of the communication interfaces are combined into a self-defined first standard interface, a power supply interface of the power supply detection module and the other communication interface are combined into a self-defined second standard interface, and the power supply module is also provided with a power supply reserved interface for providing power supply for a newly-added immature circuit;
the main control unit is provided with a display unit, a printing unit, a transmission module, a key unit and a control circuit module of an audio unit, the edge of the main control unit is provided with a connection interface of the display unit, the printing unit, the transmission module, the key unit and the audio unit, the main control unit is respectively and electrically connected with the display unit, the printing unit, the transmission module, the key unit and the audio unit through the connection interface, and the display unit, the printing unit, the transmission module, the key unit and the audio unit are all independently designed so as to facilitate the replacement of the function modules;
the main control unit is also provided with a power supply circuit and an RS485 communication circuit module, the edge of the main control unit is provided with a standard interface formed by combining a power supply interface and a communication interface, the standard interface is correspondingly and electrically connected with a first standard interface on the power supply module, and the main control unit is also provided with a communication reserved interface which is reserved for the access of a newly-added immature sensing module;
each sensing unit module is designed into an independent detection module or sensing module, each detection module or sensing module is provided with a bus interface corresponding to the second standard interface of the power module, namely a power interface and an RS485 bus interface, and each detection module is electrically connected with the second standard interface of the power module through the corresponding bus interface;
when a plurality of detection modules are simultaneously connected into the main control unit, the gas circuit modules of the detection modules are connected in series or in series and in parallel, the gas circuit module interfaces of each detection module are executed according to a uniform interface, and the butt joint is simple so as to ensure the random replacement of the modules.
The detection module comprises a sensing module, a signal processing module, an accessory, a control module, a power supply conditioning module and a gas circuit module;
the power supply conditioning module converts the power supply extracted by the bus interface into a power supply required by the detection module to respectively supply power to the sensing module, the signal processing module, the accessory and the control module;
the sensing module detects a sensing signal, and the signal processing module converts the sensing signal into a digital signal and transmits the digital signal into the control module;
the accessories are functional devices arranged for completing measurement, and the accessories corresponding to different sensing detection units are different;
the control module controls the action of the accessory according to the acquired signals, converts the digital signals into measurement results and uploads the measurement results to the main control unit through a communication interface in the bus interface.
The first standard interface, the second standard interface, the standard interface on the main control unit, the bus interface all adopt the power to add RS485 communication interface combination.
The first standard interface, the second standard interface and the standard interface on the main control unit CAN also uniformly adopt CAN communication interfaces as communication interfaces in the bus interface, correspondingly, the communication switching module on the power module adopts a CAN communication switching module, and the main control unit also adopts a CAN communication module.
The standard interface and the bus interface can be customized, and the customized rule comprises an interface model, an interface line sequence, interface pin definition, a voltage range and a loading capacity.
The utility model discloses well main control board, also called the main control unit sometimes is check out test set's control pivot, man-machine interaction's core, and control data gets into display element, printing unit, host computer (other app class terminal equipment) to outside action signal such as discernment button, touch screen signal, audio signal. The main control unit provides a display unit, a printing unit, a transmission module, a key unit and an audio unit connecting interface, any functional module is replaced by a new product, and the corresponding module is replaced.
The utility model discloses an independent and main control unit design's power module, except for supplying power for main control unit and each detection module, still have main control unit and other switching functions that detect the module communication, main control unit's communication information inserts each bus interface that detects the module corresponding through the RS485 communication interface in the first standard interface on main control unit standard interface, the power module and the second standard interface. The communication line is switched through the power supply module, so that messy lines are avoided.
Between master control unit and power module, power module and each detection module, during the connection, power cord and communication line gather into the bus bar, and the wiring is simple neat, conveniently checks. The wiring adopts the winding displacement mode of connection, and the crimping is convenient, and the circuit is neat, and the extension is replaced portably.
The power module is connected with an external power supply, the power module is combined with the main control unit and the power consumption condition of each detection module to calculate the maximum load carrying capacity and the maximum power supply voltage, and the required flat cable material and the flat cable quantity are calculated according to the power, and a standard unified interface self-defining mode is set, wherein the standard unified interface self-defining mode comprises an interface model, an interface line sequence, interface pin definition, a voltage range and the load carrying capacity.
The bus interface of the detection module is a combination of a power input interface and an RS485 communication interface, and random replacement of the module is guaranteed.
Every detects the module, and the gas circuit module is different, nevertheless every detects module gas circuit interface and all carries out according to unified interface, and the butt joint is simple to guarantee the arbitrary change of module. When a plurality of detection modules are simultaneously connected with the main control unit, the gas circuit modules of the detection modules are connected in series or connected in series and in parallel.
Before data transmission is carried out between each detection module and the main control unit, the detection modules need to be configured in a user-defined mode through the main control unit or upper computer software, so that the main control unit can carry out normal data transmission on each detection module on the bus. In addition, the main control unit needs to set a configuration mode before communication, namely, different combination modes of the detection modules, which detection modules are connected to the bus, and the main control unit performs interface display and data communication according to the configuration mode.
The utility model discloses can realize the modularized design of gas instrument, after accomplishing the design of single gas detection instrument, only need carry out design, detection module communication address's of other gaseous detection module set settlement, detection module gas circuit and connect three steps, can insert other gaseous detection module, insert the convenience, simultaneously, the detection module who accomplishes the design is because of its independence, also can be applied to other instrumentation.
In addition, the utility model discloses following beneficial effect has still:
1. the power supply module is independently designed, and the main control unit is not interfered by the main control unit when in operation, so that the problem is conveniently checked;
2. the detection module or the sensing module is independently designed, so that the assembly, the debugging and the installation are convenient, and the yield is improved;
3. the communication interface between the main control unit and each detection module (sensing module) is an RS485 interface, so that the anti-interference capability is strong, and the communication distance is long; the communication mode is set to be a modbus communication protocol mode, the communication protocols are unified, and the detection module (sensing module) is convenient to access and expand;
4. the detection modules can be combined at will, so that the workload of designers is reduced, and the delivery rate is improved;
5. the newly-accessed sensing module and the newly-accessed detection module are provided with uniform bus interfaces, and are consistent with the reserved communication interfaces of the main control unit, so that the main control unit does not need to be redesigned, and the workload of designers is reduced.
The utility model discloses in, power conversion module, communication module, control module, signal processing module, power conditioning module, gas circuit module etc. in master control unit, power module, the detection module are conventional technique, do not give unnecessary details.
The utility model provides an electricity is connected the form that can carry out the signal of telecommunication such as through PCB copper foil or wire (winding displacement) between the different components and parts in the circuit structure.
To sum up, the utility model discloses simple structure, design benefit, connection simple to operate, the wiring is clear, can reduce designer's repeated work load, realizes gaseous check out test set's serialization, unitization, universalization and standardization, easily promotes, has fine society and economic benefits.
Drawings
FIG. 1 is a first early instrument modular design;
fig. 2 shows an early modular design of the instrument.
Fig. 3 is a schematic view of the modular structure of the present invention.
Fig. 4 is a schematic diagram of the structure of the detection module of the present invention.
Fig. 5 shows one of the gas circuit connection modes of the detection module according to the present invention.
Fig. 6 shows a second gas circuit connection mode of the detection module according to the present invention.
Detailed Description
As shown in fig. 3, 4, 5, and 6, a gas live detection device with a modular design includes a power module, a main control unit, and a plurality of detection modules or sensing modules, wherein the power module, the main control unit, and each detection module are designed independently;
the power supply module supplies power to the main control unit, the detection modules and the sensing module and consists of one or a plurality of daughter boards with different functions, the power supply module is provided with an external power supply interface and is connected with an external power supply for supplying power, and the edge of the power supply board is provided with a power supply interface of the power supply main control unit and a power supply interface of the power supply detection module, which are output by the power supply module;
the power supply module is also provided with an RS485 communication switching circuit module, the edge of the power panel is provided with two communication interfaces electrically connected with the communication switching circuit, a power supply interface of the power supply main control unit and one of the communication interfaces are combined into a self-defined first standard interface, a power supply interface of the power supply detection module and the other communication interface are combined into a self-defined second standard interface, and the power supply module is also provided with a power supply reserved interface for providing power supply for a newly-added immature circuit;
the main control unit is provided with a display unit, a printing unit, a transmission module, a key unit and a control circuit module of an audio unit, the edge of the main control unit is provided with a connection interface of the display unit, the printing unit, the transmission module, the key unit and the audio unit, the main control unit is respectively and electrically connected with the display unit, the printing unit, the transmission module, the key unit and the audio unit through the connection interface, and the display unit, the printing unit, the transmission module, the key unit and the audio unit are all independently designed so as to facilitate the replacement of the function modules;
the main control unit is also provided with a power supply circuit and an RS485 communication circuit module, the edge of the main control unit is provided with a standard interface formed by combining a power supply interface and a communication interface, the standard interface is correspondingly and electrically connected with a first standard interface on the power supply module, and the main control unit is also provided with a communication reserved interface which is reserved for the access of a newly-added immature sensing module;
each sensing unit module is designed into an independent detection module or sensing module, each detection module or sensing module is provided with a bus interface corresponding to the second standard interface of the power module, namely a power interface and an RS485 bus interface, and each detection module is electrically connected with the second standard interface of the power module through the corresponding bus interface;
when a plurality of detection modules are simultaneously connected into the main control unit, the gas circuit modules of the detection modules are connected in series or in series and in parallel, the gas circuit module interfaces of each detection module are executed according to a uniform interface, and the butt joint is simple so as to ensure the random replacement of the modules.
The detection module comprises a sensing module, a signal processing module, an accessory, a control module, a power supply conditioning module and a gas circuit module;
the power supply conditioning module converts the power supply extracted by the bus interface into a power supply required by the detection module to respectively supply power to the sensing module, the signal processing module, the accessory and the control module;
the sensing module detects a sensing signal, and the signal processing module converts the sensing signal into a digital signal and transmits the digital signal into the control module;
the accessories are functional devices arranged for completing measurement, and the accessories corresponding to different sensing detection units are different;
the control module controls the action of the accessory according to the acquired signals, converts the digital signals into measurement results and uploads the measurement results to the main control unit through a communication interface in the bus interface.
The first standard interface, the second standard interface, the standard interface on the main control unit, the bus interface all adopt the power to add RS485 communication interface combination.
The first standard interface, the second standard interface and the standard interface on the main control unit CAN also uniformly adopt CAN communication interfaces as communication interfaces in the bus interface, correspondingly, the communication switching module on the power module adopts a CAN communication switching module, and the main control unit also adopts a CAN communication module.
The standard interface and the bus interface can be customized, and the customized rule comprises an interface model, an interface line sequence, interface pin definition, a voltage range and a loading capacity.
The utility model discloses well main control board, also called the main control unit sometimes is check out test set's control pivot, man-machine interaction's core, and control data gets into display element, printing unit, host computer (other app class terminal equipment) to outside action signal such as discernment button, touch screen signal, audio signal. The main control unit provides a display unit, a printing unit, a transmission module, a key unit and an audio unit connecting interface, any functional module is replaced by a new product, and the corresponding module is replaced.
The utility model discloses an independent and main control unit design's power module, except for supplying power for main control unit and each detection module, still have main control unit and other switching functions that detect the module communication, main control unit's communication information passes through the RS485 communication interface among main control unit standard interface, the first standard interface of power module and the power module second standard interface and inserts each and detect the corresponding bus interface of module. The communication line is switched through the power supply module, so that messy lines are avoided.
Between master control unit and power module, power module and each detection module, during the connection, power cord and communication line gather into the bus bar, and the wiring is simple neat, conveniently checks. The wiring adopts the winding displacement mode of connection, and the crimping is convenient, and the circuit is neat, and the extension is replaced portably.
The power module is connected with an external power supply, the power module is combined with the main control unit and the power consumption condition of each detection module to calculate the maximum load carrying capacity and the maximum power supply voltage, and the required flat cable material and the flat cable quantity are calculated according to the power, and a standard unified interface self-defining mode is set, wherein the standard unified interface self-defining mode comprises an interface model, an interface line sequence, interface pin definition, a voltage range and the load carrying capacity.
The bus interface of the detection module is a combination of a power input interface and an RS485 communication interface, and random replacement of the module is guaranteed.
The accessories in the detection module are functional devices arranged for completing measurement, the accessories corresponding to different detection units are different, and if an air duct is added for ensuring measurement accuracy and pipeline circulation, the accessories are a combination of devices such as a fan or an electric valve. Every detects the module, and the gas circuit module is different, nevertheless every detects the module interface and all carries out according to unified interface, and the butt joint is simple to guarantee the arbitrary change of module. When a plurality of detection modules are simultaneously connected to the main control unit, the gas circuit modules of the detection modules can be connected in series, as shown in fig. 5, or connected in series and in parallel, as shown in fig. 6.
Before data transmission is carried out between each detection module and the main control unit, the detection module needs to be configured in a user-defined mode through the main control unit (or upper computer software) so as to ensure that the main control unit can carry out normal data transmission on each detection module on the bus. In addition, the main control unit needs to set a configuration mode before communication, namely, different combination modes of the detection modules, which detection modules are connected to the bus, and the main control unit performs interface display and data communication according to the configuration mode.
The utility model discloses can realize the modularized design of gas instrument, after accomplishing the design of single gas detection instrument, only need carry out design, detection module communication address's of other gaseous detection module set settlement, detection module gas circuit and connect three steps, can insert other gaseous detection module, insert the convenience, simultaneously, the detection module who accomplishes the design is because of its independence, also can be applied to other instrumentation.
In addition, the utility model discloses following beneficial effect has still:
1. the power supply module is independently designed, and the main control unit is not interfered by the main control unit when in operation, so that the problem is conveniently checked;
2. the detection module or the sensing module is independently designed, so that the assembly, the debugging and the installation are convenient, and the yield is improved;
3. the communication interface between the main control unit and each detection module (sensing module) is an RS485 interface, so that the anti-interference capability is strong, and the communication distance is long; the communication mode is set to be a modbus communication protocol mode, the communication protocols are unified, and the detection module (sensing module) is convenient to access and expand;
4. the detection modules can be combined at will, so that the workload of designers is reduced, and the delivery rate is improved;
5. the newly-accessed sensing module and the newly-accessed detection module are provided with uniform bus interfaces, and are consistent with the reserved communication interfaces of the main control unit, so that the main control unit does not need to be redesigned, and the workload of designers is reduced.
The utility model discloses in, power conversion module, communication module, control module, signal processing module, power conditioning module, gas circuit module etc. in master control unit, power module, the detection module are conventional technique, do not give unnecessary details.
The utility model provides an electricity is connected the form that can carry out the signal of telecommunication such as through PCB copper foil or wire (winding displacement) between the different components and parts in the circuit structure.
To sum up, the utility model discloses simple structure, design benefit, connection simple to operate, the wiring is clear, can reduce designer's repeated work load, realizes gaseous check out test set's serialization, unitization, universalization and standardization, easily promotes, has fine society and economic benefits.
Claims (5)
1. The utility model provides a gaseous electrified check out test set of modular design which characterized in that: the system comprises a power supply module, a main control unit and a plurality of detection modules or sensing modules, wherein the power supply module, the main control unit and each detection module are independently designed;
the power supply module supplies power to the main control unit, the detection modules and the sensing module and consists of one or a plurality of daughter boards with different functions, the power supply module is provided with an external power supply interface and is connected with an external power supply for supplying power, and the edge of the power supply board is provided with a power supply interface of the power supply main control unit and a power supply interface of the power supply detection module, which are output by the power supply module;
the power supply module is also provided with an RS485 communication switching circuit module, the edge of the power panel is provided with two communication interfaces electrically connected with the communication switching circuit, a power supply interface of the power supply main control unit and one of the communication interfaces are combined into a self-defined first standard interface, a power supply interface of the power supply detection module and the other communication interface are combined into a self-defined second standard interface, and the power supply module is also provided with a power supply reserved interface for providing power supply for a newly-added immature circuit;
the main control unit is provided with a display unit, a printing unit, a transmission module, a key unit and a control circuit module of an audio unit, the edge of the main control unit is provided with a connection interface of the display unit, the printing unit, the transmission module, the key unit and the audio unit, the main control unit is respectively and electrically connected with the display unit, the printing unit, the transmission module, the key unit and the functional modules of the audio unit through the connection interface, and the display unit, the printing unit, the transmission module, the key unit and the functional modules of the audio unit are all independently designed;
the main control unit is also provided with a power supply circuit and an RS485 communication circuit module, the edge of the main control unit is provided with a standard interface formed by combining a power supply interface and a communication interface, the standard interface is correspondingly and electrically connected with a first standard interface on the power supply module, and the main control unit is also provided with a communication reserved interface which is reserved for the access of a newly-added immature sensing module;
each sensing unit module is designed into an independent detection module or sensing module, each detection module or sensing module is provided with a bus interface corresponding to the second standard interface of the power module, namely a power interface and an RS485 bus interface, and each detection module is electrically connected with the second standard interface of the power module through the corresponding bus interface;
when a plurality of detection modules are simultaneously connected into the main control unit, the gas circuit modules of the detection modules are connected in series or in series and parallel, and the gas circuit module interface of each detection module is executed according to a uniform interface.
2. A gas live detection apparatus of modular design according to claim 1, characterized in that: the detection module comprises a sensing module, a signal processing module, an accessory, a control module, a power supply conditioning module and a gas circuit module;
the power supply conditioning module converts the power supply extracted by the bus interface into a power supply required by the detection module to respectively supply power to the sensing module, the signal processing module, the accessory and the control module;
the sensing module detects a sensing signal, and the signal processing module converts the sensing signal into a digital signal and transmits the digital signal into the control module;
the accessories are functional devices arranged for completing measurement, and the accessories corresponding to different sensing detection units are different;
the control module controls the action of the accessory according to the acquired signals, converts the digital signals into measurement results and uploads the measurement results to the main control unit through a communication interface in the bus interface.
3. A gas live detection apparatus of modular design according to claim 1, characterized in that: the first standard interface, the second standard interface, the standard interface on the main control unit and the bus interface are all combined by adopting a power supply and an RS485 communication interface.
4. A gas live detection apparatus of modular design according to claim 2, characterized in that: the first standard interface, the second standard interface, the standard interface on the main control unit and the communication interface in the bus interface are all CAN communication interfaces, correspondingly, the communication switching module on the power module adopts a CAN communication switching module, and the main control unit also adopts a CAN communication module.
5. A gas live detection apparatus of modular design according to claim 2, characterized in that: the standard interface and the bus interface can be customized, and the customized rule comprises an interface model, an interface line sequence, interface pin definition, a voltage range and a loading capacity.
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