CN115048329A - Digital transmitter based on POWERBUS technology - Google Patents

Digital transmitter based on POWERBUS technology Download PDF

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Publication number
CN115048329A
CN115048329A CN202210756371.7A CN202210756371A CN115048329A CN 115048329 A CN115048329 A CN 115048329A CN 202210756371 A CN202210756371 A CN 202210756371A CN 115048329 A CN115048329 A CN 115048329A
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CN
China
Prior art keywords
circuit
module
data
bus
powerbus
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210756371.7A
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Chinese (zh)
Inventor
吴志文
嵇治刚
孙亮亮
陈帆
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Aerospace South Ocean Zhejiang Science And Technology Co ltd
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Aerospace South Ocean Zhejiang Science And Technology Co ltd
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Publication date
Application filed by Aerospace South Ocean Zhejiang Science And Technology Co ltd filed Critical Aerospace South Ocean Zhejiang Science And Technology Co ltd
Priority to CN202210756371.7A priority Critical patent/CN115048329A/en
Publication of CN115048329A publication Critical patent/CN115048329A/en
Pending legal-status Critical Current

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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/12—Static balancing; Determining position of centre of gravity
    • G01M1/122—Determining position of centre of gravity
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00016—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using a wired telecommunication network or a data transmission bus
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00028—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment involving the use of Internet protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L2012/40208—Bus networks characterized by the use of a particular bus standard
    • H04L2012/40228—Modbus
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Signal Processing (AREA)
  • Computer Hardware Design (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

A digital transmitter based on POWERBUS bus technology belongs to the technical field of transmitters. The invention comprises a circuit bottom plate and a transmitting module circuit arranged on the circuit bottom plate, wherein the transmitting module circuit is connected with a sensor bridge circuit and a two-wire system bus and comprises a sensor analog acquisition module, a bus power supply and communication module and a central processing unit module; the bus power supply and communication module controls and outputs a DC power supply to supply power to the whole transmitting module circuit, demodulates the instruction data on the two-wire system bus and transmits the demodulated instruction data to the central processing unit module; the central processing unit module collects data on a sensor bridge circuit through the sensor analog collection module according to the received instruction, then carries out filtering, calibration and digital processing on the collected data, sends the data to the bus power supply and communication module for modulation, and sends the data to the two-wire system bus. The invention has simpler circuit, more convenient test and more stable voltage.

Description

Digital transmitter based on POWERBUS technology
Technical Field
The invention relates to the technical field of transmitters, in particular to a digital transmitter based on a POWERBUS technology.
Background
In an application scene of a field testing system, problems of more sensor nodes, wide node stepping, long distance and the like are often encountered by a field mechanical sensor. For example, a certain offshore platform gravity center measuring system uses 128 force sensors at most, and each sensor is more than 10M away. The scene adopts a centralized acquisition processing method, a 128-channel acquisition system is required, and the longest wiring is more than 1000M. Problems of complex acquisition system, overweight cable, large interference and the like can be encountered. The other mode is that an RS485 bus module is adopted, data are collected and transmitted through the module, power needs to be supplied additionally, under the condition of a test cable of more than 1000M, the problems of power supply voltage reduction and insufficient power supply are frequently encountered, and meanwhile, as the module cable comprises an RS485 cable and a power supply cable, the test cable needs 4 wires at least.
In the prior art, for example, chinese utility model patent No. ZL202021212513.6 discloses a pressure transmitter main control module supporting a dual communication protocol, which includes a circuit board, a microprocessor mounted on the circuit board, and an external crystal oscillator, a power module, a power interface, a sensor interface, a D/a module, an ATEX explosion-proof circuit, a liquid crystal display interface, and a JTAG software simulation interface, which are mounted on the circuit board and connected with the microprocessor; and the master control module is also provided with an RS485 communication module, an HART communication module and an RS485 communication interface which are connected with the microprocessor. The pressure transmitter still has the problems of insufficient power supply and complex circuit.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a digital transmitter based on the POWERBUS bus technology, which adopts a two-wire bus for power supply and communication, has simpler circuit and more convenient and faster test, and can support 48V at the highest bus voltage, thereby effectively reducing the problem of insufficient voltage.
The purpose of the invention is realized by the following technical scheme:
a digital transmitter based on POWERBUS bus technology comprises a circuit bottom plate and a transmitting module circuit arranged on the circuit bottom plate, wherein the transmitting module circuit is connected with a sensor bridge circuit and a two-wire system bus and comprises a sensor analog acquisition module, a bus power supply and communication module and a central processing unit module;
the bus power supply and communication module controls and outputs a DC (direct current) power supply to supply power to the whole transmitting module circuit, demodulates the instruction data on the two-wire system bus and then transmits the demodulated instruction data to the central processing unit module; the central processor module collects data on the sensor bridge circuit through the sensor analog collection module according to the received instruction, then filters, calibrates and digitizes the collected data, and sends the data to the bus power supply and communication module for modulation and sends the data to the two-wire system bus.
The invention adopts the two-wire system bus to realize power supply and communication, and modulates and demodulates communication data through the bus power supply and communication module, thereby ensuring the accuracy and high efficiency of communication between the sensor bridge circuit and the two-wire system bus, simplifying the circuit structure, simultaneously supporting 48V at the highest bus voltage and effectively reducing the problem of insufficient voltage.
Preferably, the sensor analog acquisition module includes:
the analog filter circuit unit is used for performing analog filtering before acquiring signals, improving the signal quality and reducing the workload and difficulty of subsequent data processing;
and the analog signal acquisition circuit unit is used for acquiring the signals of the bridge circuit of the force sensor.
Preferably, the bus power supply and communication module includes:
the protection circuit unit is used for carrying out overcurrent protection on the transmitter module circuit and avoiding damage to the transmitter caused by excessive current;
the DC direct current processing circuit unit is used for converting the current on the two-wire system bus into DC direct current required by the transmitting module circuit;
and the PB311 bus data processing circuit unit is used for modulating or demodulating signals and transmitting and receiving data. The method specifically comprises the following steps: modulating the two-wire system bus data for the communication of the central processing module; and demodulating the sensor bridge circuit data for two-wire bus communication. The intelligent power supply system is suitable for industrial sites, can realize communication and power supply functions simultaneously only by a two-wire system bus, can support field condition use of 256 nodes in the site at a distance of 3000M, and supports various wiring topologies such as tree shapes, star shapes and the like.
Preferably, the central processor module collects and processes analog numbers and packages the analog numbers into MODBUS communication format data so as to facilitate the integrated use of various test systems.
Preferably, the circuit board is provided with a shielding cover covering the transmitting module circuit, so as to effectively prevent external signal interference and ensure the accuracy of the test result.
Preferably, the two opposite ends of the circuit substrate are provided with terminals respectively used for connecting the sensor bridge circuit and the two-wire bus, and the terminals are located outside the shielding case.
Preferably, the circuit board is provided with a collar adapted to the shield case around the transmission module circuit, and the shield case is clamped to an outer side surface of the collar. The shield cover only needs to cover to the rand outside promptly, through interference fit between them to utilize frictional force between the two to realize stable installation, this structure also is convenient for dismantle simultaneously and maintains. Preferably, the clamping ring can be made of rubber with high friction, and salient points can be designed on the outer side surface of the clamping ring to increase the friction.
Preferably, an annular groove is formed in the outer side surface of the retainer ring along the circumferential direction of the retainer ring, and a waterproof ring is arranged in the annular groove. Because this changer needs use at offshore platform, consequently can receive the influence of humid environment, set up waterproof circle to ensure the waterproof nature of changer.
Preferably, the diameter of the waterproof ring is larger than the depth of the annular groove, and a clamping groove matched with the waterproof ring is formed in the inner side surface of the shielding cover. Utilize the waterproof circle rather than the inseparable cooperativeness of storage tank, through the design, make the degree of depth of the ring channel on the rand be less than the diameter of waterproof circle, even make partial waterproof circle expose outside the ring channel, process out corresponding draw-in groove simultaneously on the shield cover medial surface, go into this part waterproof circle with the card, thereby utilize the waterproof circle to realize location and spacing to shield cover and rand installation cooperation position, not only can ensure the accuracy of shield cover mounted position, can also increase the stability of shield cover installation simultaneously, prevent that the accident from droing.
Preferably, the shielding case is made of cupronickel with the thickness of 0.35mm, and the shielding effect is good.
The invention has the advantages that:
1. the two-wire system bus is adopted to complete the communication and power supply functions at the same time, thereby simplifying the circuit;
2. the data acquisition and processing functions are completed at the near end of the sensor, so that the interference caused by cables is reduced;
3. the MODBUS communication protocol is supported, and various test systems are convenient to integrate and use;
4. the size is 24 × 28 × 3.5, the structure is small and compact, and the sensor is convenient to integrate into the sensor or other testing components;
5. the protection circuit is integrated inside, and the protection circuit can be directly used without any external device.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a digital transmitter according to the POWERBUS technology in accordance with the present invention;
FIG. 2 is a block schematic diagram of a transmitting block circuit of the present invention;
FIG. 3 is a schematic diagram of a digital transmitter according to the POWERBUS technology;
FIG. 4 is a schematic diagram of the internal structure of a digital transmitter based on POWERBUS technology according to the present invention;
fig. 5 is a schematic view of the structure of the collar and the shield cover.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-5, the present invention provides a digital transmitter based on POWERBUS bus technology, which includes a circuit board 1, a transmitting module circuit 3 disposed on the circuit board, and a shielding case 2 disposed on the circuit board 1 and covering the transmitting module circuit 3, wherein the transmitting module circuit is respectively connected to a sensor bridge circuit 5 and a two-wire bus 6 through terminals at two ends of the circuit board, and the shielding case 2 is made of white copper with a thickness of 0.35mm, so as to effectively prevent external signal interference and ensure accuracy of a test result.
Specifically, the transmission module circuit 3 specifically includes a sensor analog acquisition module 31, a bus power supply and communication module 32, and a central processing unit module 33. Wherein, the sensor simulation acquisition module 31 includes:
the analog filter circuit unit 311 is used for performing analog filtering before signal acquisition, improving signal quality, and reducing workload and difficulty of subsequent data processing;
and the analog signal acquisition circuit unit 312 is used for acquiring signals of the force sensor bridge circuit.
The bus power supply and communication module 32 includes:
the protection circuit unit 321 is used for performing overcurrent protection on the transmission module circuit to avoid damage to the transmitter caused by excessive current;
a DC processing circuit unit 322, configured to convert the current on the two-wire bus 6 into a DC current required by the transmitting module circuit 3;
the PB311 bus data processing circuit unit 323 modulates or demodulates data, and transmits and receives data. The method specifically comprises the following steps: modulating the two-wire system bus data for the communication of the central processing module; and demodulating the sensor bridge circuit data for two-wire bus communication. The intelligent power supply system is suitable for industrial sites, can realize communication and power supply functions simultaneously only by a two-wire system bus, can support field condition use of 256 nodes in the site at a distance of 3000M, and supports various wiring topologies such as tree shapes, star shapes and the like.
The central processing unit module 33 collects data of the sensor bridge circuit 5 through the analog filter circuit unit 311 and the analog signal acquisition circuit unit 312, then performs filtering, calibration and digitization processing on the collected data, and sends the data to the bus power supply and communication module 32 for modulation, and finally sends the data to the two-wire system bus 6. Moreover, the central processing unit module 33 collects and processes the analog data and then packages the analog data into MODBUS communication format data, so as to facilitate the integrated use of various test systems.
To sum up, this digital transmitter during operation: firstly, the current on the two-wire system bus 6 and the two-wire system POWERBUS data enter the transmitter through the protection circuit unit 321; wherein, the current is converted into direct current for the transmitter through the DC processing circuit unit 322; the two-wire POWERBUS data is demodulated by the PB311 bus data processing circuit 323 and sent to the central processing module 33, including some test commands. Then, the central processing unit 33 acquires data of the sensor bridge circuit 5 through the analog filter circuit unit 311 and the analog signal acquisition circuit unit 312 according to the received instruction, then performs filtering, calibration and digitization processing on the acquired data, packages the data into MODBUS communication format data, and then sends the data to the PB311 bus data processing circuit unit 323 of the bus power supply and communication module for modulation, and finally sends the modulated data to the two-wire bus 6 through the PB311 bus data processing circuit unit 323 for communication use by a terminal controller or other nodes. The bus powering and communication module 32 then continues to listen for data on the two-wire bus 6.
Furthermore, the two opposite ends of the circuit bottom plate 1 are provided with terminals respectively used for connecting the sensor bridge circuit 5 and the two-wire system bus 6, and the terminals are located outside the shielding case 2, so that the transmitter can be connected with the outside conveniently.
In order to facilitate the installation of the shielding case 2, a collar 7 adapted to the shielding case 2 is arranged on the circuit base plate 1 around the transmitting module circuit 3, the shielding case 2 is clamped on the outer side surface of the collar 7, that is, the shielding case 2 only needs to be sleeved outside the collar 7, and through interference fit of the collar 7 and the shielding case, stable installation is realized by using friction force between the collar 7 and the shielding case, and meanwhile, the structure is more convenient to disassemble and maintain. Preferably, the clamping ring can be made of rubber with high friction, and salient points can be designed on the outer side surface of the clamping ring to increase the friction.
In addition, because the transmitter needs to be used on an offshore platform and is affected by a damp environment, in order to ensure the waterproof performance of the transmitter, an annular groove 71 is arranged on the outer side surface of the clamping ring 7 along the circumferential direction of the outer side surface, and a waterproof ring 72 is arranged in the annular groove 71 to prevent water from entering the shielding cover and ensure the waterproof performance of an internal circuit structure. And, utilize the inseparable fit nature of waterproof circle rather than the storage tank, through the design, make the degree of depth of ring channel 71 on the rand be less than the diameter of waterproof circle 72, even make partial waterproof circle expose outside the ring channel, corresponding draw-in groove 21 is processed out simultaneously on shield cover 2 medial surface, with this partial waterproof circle of card income, thereby utilize the waterproof circle to realize location and spacing to shield cover and rand installation cooperation position, not only can ensure the accuracy of shield cover mounted position, simultaneously can also increase the stability of shield cover installation, prevent unexpected the droing.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and any changes or substitutions that can be easily made by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (10)

1. A digital transmitter based on POWERBUS bus technology comprises a circuit bottom plate and a transmitting module circuit arranged on the circuit bottom plate, and is characterized in that the transmitting module circuit is connected with a sensor bridge circuit and a two-wire system bus, and comprises a sensor analog acquisition module, a bus power supply and communication module and a central processing unit module;
the bus power supply and communication module controls and outputs a DC (direct current) power supply to supply power to the whole transmitting module circuit, demodulates the instruction data on the two-wire system bus and then transmits the demodulated instruction data to the central processing unit module; the central processor module collects data on the sensor bridge circuit through the sensor analog collection module according to the received instruction, then filters, calibrates and digitizes the collected data, and sends the data to the bus power supply and communication module for modulation and sends the data to the two-wire system bus.
2. The POWERBUS bus technology-based digital transmitter of claim 1, wherein the sensor analog acquisition module comprises:
the analog filter circuit unit is used for performing analog filtering before the signals are collected so as to improve the signal quality;
and the analog signal acquisition circuit unit is used for acquiring the signals of the bridge circuit of the force sensor.
3. The POWERBUS bus technology-based digital transmitter of claim 1, wherein the bus powering and communication module comprises:
the protection circuit unit is used for carrying out overcurrent protection on the transmitting module circuit;
the DC direct current processing circuit unit is used for converting the current on the two-wire system bus into DC direct current required by the transmitting module circuit;
and the PB311 bus data processing circuit unit is used for modulating or demodulating signals and transmitting and receiving data.
4. The POWERBUS technology-based digital transmitter of claim 1, wherein the central processor module collects and processes analog and digital data and packages the analog and digital data into MODBUS communication format data.
5. The POWERBUS technology-based digital transmitter of claim 1, wherein a shield covering the transmitter module circuitry is provided on the circuit backplane.
6. The POWERBUS technology-based digital transmitter of claim 5, wherein the opposite ends of the circuit substrate are provided with terminals for connecting the sensor bridge circuit and the two-wire bus, respectively, the terminals being external to the shield.
7. The POWERBUS TECHNICAL DIGITAL TRANSMITTER of claim 5, wherein said circuit backplane has a collar fitted around said transmitter module circuitry to fit said shield, said shield being snap fitted to an outer side of said collar.
8. The POWERBUS technology-based digital transmitter of claim 7, wherein an annular groove is provided on an outer side surface of the collar along a circumferential direction thereof, and a waterproof ring is provided in the annular groove.
9. The POWERBUS technology-based digital transmitter of claim 8, wherein the diameter of the waterproof ring is larger than the depth of the annular groove, and a clamping groove for matching the waterproof ring is arranged on the inner side surface of the shielding case.
10. Digital transmitter in accordance with POWERBUS technology according to claim 5, characterized in that said shielding is in particular made of cupronickel with a thickness of 0.35 mm.
CN202210756371.7A 2022-06-30 2022-06-30 Digital transmitter based on POWERBUS technology Pending CN115048329A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210756371.7A CN115048329A (en) 2022-06-30 2022-06-30 Digital transmitter based on POWERBUS technology

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210756371.7A CN115048329A (en) 2022-06-30 2022-06-30 Digital transmitter based on POWERBUS technology

Publications (1)

Publication Number Publication Date
CN115048329A true CN115048329A (en) 2022-09-13

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014004434A1 (en) * 2014-03-28 2015-10-01 Itz Innovations- Und Technologiezentrum Gmbh Lighting system with a plurality of coupled lights and motion detectors
CN107069953A (en) * 2017-02-27 2017-08-18 上海华宿电气股份有限公司 A kind of monitoring system based on power bus information
CN206461436U (en) * 2017-01-25 2017-09-01 珠海众特科技有限公司 Power supply monitoring system
CN206460154U (en) * 2017-01-25 2017-09-01 珠海众特科技有限公司 Power detecting sensor
CN208271380U (en) * 2018-05-25 2018-12-21 中山市广卫消防设备科技有限公司 A kind of fire-fighting detection device
CN110542453A (en) * 2019-09-04 2019-12-06 上海卓电电气有限公司 Remote gas density relay and monitoring system
CN111209238A (en) * 2020-01-17 2020-05-29 济南金奥太信息有限公司 Two bus communication interface circuit based on power supply and communication time sharing multiplex
CN210668207U (en) * 2019-09-04 2020-06-02 上海乐研电气有限公司 Remote gas density relay system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014004434A1 (en) * 2014-03-28 2015-10-01 Itz Innovations- Und Technologiezentrum Gmbh Lighting system with a plurality of coupled lights and motion detectors
CN206461436U (en) * 2017-01-25 2017-09-01 珠海众特科技有限公司 Power supply monitoring system
CN206460154U (en) * 2017-01-25 2017-09-01 珠海众特科技有限公司 Power detecting sensor
CN107069953A (en) * 2017-02-27 2017-08-18 上海华宿电气股份有限公司 A kind of monitoring system based on power bus information
CN208271380U (en) * 2018-05-25 2018-12-21 中山市广卫消防设备科技有限公司 A kind of fire-fighting detection device
CN110542453A (en) * 2019-09-04 2019-12-06 上海卓电电气有限公司 Remote gas density relay and monitoring system
CN210668207U (en) * 2019-09-04 2020-06-02 上海乐研电气有限公司 Remote gas density relay system
CN111209238A (en) * 2020-01-17 2020-05-29 济南金奥太信息有限公司 Two bus communication interface circuit based on power supply and communication time sharing multiplex

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