CN114501177A - Distributed data acquisition method, system, storage medium and equipment - Google Patents
Distributed data acquisition method, system, storage medium and equipment Download PDFInfo
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- CN114501177A CN114501177A CN202111664366.5A CN202111664366A CN114501177A CN 114501177 A CN114501177 A CN 114501177A CN 202111664366 A CN202111664366 A CN 202111664366A CN 114501177 A CN114501177 A CN 114501177A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
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- H04Q2209/20—Arrangements in telecontrol or telemetry systems using a distributed architecture
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- H04Q2209/00—Arrangements in telecontrol or telemetry systems
- H04Q2209/60—Arrangements in telecontrol or telemetry systems for transmitting utility meters data, i.e. transmission of data from the reader of the utility meter
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- H—ELECTRICITY
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Abstract
The invention provides a distributed data acquisition method, a system, a storage medium and equipment, which comprise the steps of obtaining a target channel measurement signal, obtaining a control signal sent by a signal switch according to the measurement signal, and controlling a plurality of signal switches to be connected with corresponding signal acquisition links according to the control signal; sequentially collecting signals of a signal collection link according to the measurement signals; and controlling the signal acquisition link of the target channel to be in an electrical isolation state or a high resistance state with other signal acquisition links of the target channel. According to the distributed data acquisition method, the distributed data acquisition system, the storage medium and the equipment, the plurality of signal switches are controlled to be connected with the corresponding signal links according to the control signals, so that the signal acquisition links of the target channel are formed, and the current signal acquisition link is controlled to be electrically isolated or in a high-resistance state from other signal acquisition links when the signal of the current signal acquisition link is tested, so that the plurality of signals are measured in one channel without mutual interference, and the signals among different channels are also not interfered with each other.
Description
Technical Field
The present invention relates to the field of data acquisition technologies, and in particular, to a distributed data acquisition method, system, storage medium, and device.
Background
Data acquisition, also known as data acquisition, utilizes a device to acquire data from outside the system and input it to an interface within the system. The data acquisition technology is widely applied in various fields, and the acquired data are various physical quantities such as temperature, water level, wind speed, pressure and the like which are converted into electric signals, and can be analog quantities or digital quantities.
Distributed data acquisition is mainly used for measuring various physical quantity signals such as voltage, current, electric bridges and the like, and is mainly applied to infrastructure such as subway foundation pits, bridges, dams, slopes and the like. The data synchronous acquisition technology of distributed data acquisition requires that the synchronism of data acquisition is improved as much as possible, and the synchronism and the efficiency of data acquisition are realized. In the prior art, a plurality of sensor data are synchronously acquired as required in the distributed data synchronous acquisition process, and when a plurality of sensor signals are measured, the signals interfere with each other, so that the high speed and the high efficiency of data acquisition are influenced.
Disclosure of Invention
Based on this, the present invention aims to provide a distributed data acquisition method, a distributed data acquisition system, a storage medium and a device, which solve the problem that in the background art, signals of a distributed data synchronous acquisition sensor interfere with each other in the process of acquiring the signals, thereby affecting the high speed and high efficiency of data acquisition.
The invention provides a distributed data acquisition method, which is applied to a distributed data acquisition circuit, wherein the distributed data acquisition circuit comprises a plurality of signal switches connected in series, and the method comprises the following steps:
acquiring a target channel measuring signal, acquiring a control signal sent by a signal switch according to the measuring signal, and controlling a plurality of signal switches to be connected with corresponding signal acquisition links according to the control signal;
sequentially collecting signals of a signal collection link according to the measurement signals;
and controlling the currently measured signal acquisition link of the target channel to be in an electrical isolation state or a high-resistance state with other signal acquisition links of the target channel.
According to the distributed data acquisition method, the measurement signal of the target channel is acquired, the control signals of the signal switches are acquired according to the measurement signal, the signal acquisition links of the target channel are controlled to be connected with the corresponding signal links according to the control signals, the signals of the signal acquisition links are sequentially acquired, and the current signal acquisition link is controlled to be electrically isolated or in a high-resistance state from other signal acquisition links when the signal of the current signal acquisition link is tested, so that a plurality of signals are measured in one channel, the signal acquisition of different links of the same channel is not interfered with one another, and the problems that the high speed and the high efficiency of data acquisition are influenced due to the fact that the signals are interfered with one another in the signal acquisition process of the distributed data synchronous acquisition sensor in the background technology are solved.
Further, the signal switches include a signal input terminal IN and two signal output terminals OUT1 and OUT2, the control signals sent by the signal switches are obtained, and the step of controlling the plurality of signal switches to connect to the corresponding signal acquisition links according to the control signals includes:
according to the control signal of the signal switch, the signal input end IN of the control signal switch is connected with the signal output interface OUT2 to form a signal acquisition link corresponding to the signal switch.
Further, according to the control signal of the signal switch, the step of connecting the signal input terminal IN of the control signal switch to the signal output interface OUT2 further includes:
the signal output terminal OUT1 of the control signal switch is in a floating state.
Further, the method further comprises:
when the control signal is not detected, the control target channel is electrically opened, the signal input end IN is controlled to be connected with the signal output end OUT1, and the signal output end OUT1 is controlled to be IN an electrically isolated state or a high-impedance state.
Further, the method further comprises:
the signal switch is connected with the sensor equipment through the plurality of communication interface modules so as to collect signals of the sensor equipment, and the sensor equipment comprises a voltage output sensor, a vibrating wire sensor, a temperature sensor, a current output type sensor and an RS485 type sensor.
Another aspect of the present invention provides a distributed data acquisition system, which is applied to a distributed data acquisition circuit, where the distributed data acquisition circuit includes a plurality of serially connected signal switches, and the system includes:
the signal acquisition link control module is used for acquiring a target channel measurement signal, acquiring a control signal sent by the signal switches according to the measurement signal, controlling the plurality of signal switches to be connected with the corresponding signal acquisition links according to the control signal,
the signal acquisition module is used for sequentially acquiring signals of the signal acquisition link according to the measurement signals;
and the signal link isolation module is used for controlling the currently measured signal acquisition link of the target channel to be in an electrical isolation state or a high impedance state with other signal acquisition links of the target channel.
Another aspect of the invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a distributed data acquisition method as any one of the above.
Another aspect of the present invention also provides a data processing apparatus, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the distributed data acquisition method as described in any one of the above.
Drawings
FIG. 1 is a flow chart of a distributed data collection method according to a first embodiment of the present invention;
FIG. 2 is a flow chart of a distributed data collection method according to a second embodiment of the present invention;
FIG. 3 is a block diagram of a distributed data acquisition system according to a third embodiment of the present invention;
the following detailed description will further illustrate the invention in conjunction with the above-described figures.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for purposes of illustration only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The distributed data acquisition system mainly connects the system with a computer multi-machine system, a host layer is operated by an operating system, hardware and software and equipment, a lower part is composed of a plurality of distributed data acquisition nodes, and the plurality of distributed data acquisition nodes are connected with sensors to form data synchronous acquisition.
The distributed data acquisition method provided by the invention realizes that a single channel has the capability of measuring multiple signals by adopting a mode of connecting multiple stages of signal switches in series. The signal switches are IN a 1:2 structural form, namely one channel is a signal input end IN, and two channels are signal output ends OUT1 and OUT 2. The plurality of switches connected IN series control the signal input end IN to be connected to the signal output end OUT2 according to the control signal EN to form a signal acquisition link, and control other non-current acquisition links to be IN an isolation state or a high resistance state, so that mutual interference IN the signal acquisition process is avoided.
Example one
Referring to fig. 1, a distributed data collection method according to a first embodiment of the present invention is shown, including steps S11-S13.
And S11, obtaining a target channel measuring signal, obtaining a control signal sent by the signal switch according to the measuring signal, and controlling a plurality of signal switches to connect with corresponding signal acquisition links according to the control signal.
Typically, the signal switch connects the signal input terminal IN to the signal output terminal OUT1 by default. When a signal of a target channel needs to be measured, a measuring signal is sent, when the measuring signal of the target channel is obtained, signals at signal input interfaces of a plurality of signal switches are detected according to the measuring signal, and when a control signal EN sent by the signal switch is obtained, a signal input end IN of the signal switch is controlled to be connected to a corresponding signal output interface OUT2 according to the control signal EN, so that a signal acquisition link is formed. And the signal switches are respectively and correspondingly connected to the corresponding signal acquisition links according to the control signals. Thus, a plurality of series connected signal switches form a plurality of signal acquisition chains of the target channel.
And S12, sequentially acquiring the signals of the signal acquisition link according to the measurement signals.
The signal switches are respectively and correspondingly connected to the sensor equipment, and the signals of the sensors are acquired according to the formed signal acquisition links. The sensor equipment comprises a voltage output sensor, a vibrating wire sensor, a temperature sensor, a current output type sensor, an RS485 type sensor and the like.
Specifically, starting from the first signal switch of the signal input, assume that the circuit is provided with two stages of signal switches, wherein the signal switch a is connected IN series with the signal switch B, the signal switch a _ a serves as the front end of the channel, and the external sensor is connected for signal input and channel chip selection. The A signal switch OUT1_ A is suspended to avoid signal crosstalk, a signal output interface OUT2_ A of the A signal switch is connected to a signal input end IN _ B of a next-stage B signal switch, a signal output end OUT1_ B box OUT2_ B of the B signal switch is respectively connected to corresponding signal acquisition links, and signal acquisition of the sensors is carried OUT IN sequence according to the formed signal acquisition links, so that signals of the sensors cannot interfere with one another, and the function of realizing multiple signal acquisition by one channel is realized.
S13, and controlling the current measured signal acquisition link of the target channel to be in an electrical isolation state or a high resistance state with other signal acquisition links of the target channel.
When the signal of the target channel is collected, the current measured signal collection link of the target channel and other current unmeasured signal collection links of the target channel are controlled to be in an electrical isolation state or a high resistance state, so that the signals collected by different signal collection links in one collection channel are not interfered with each other.
In summary, in the distributed data acquisition method in the above embodiments of the present invention, the measurement signal of the target channel is obtained, the control signal of the signal switch is obtained according to the measurement signal, and the plurality of signal switches are controlled to connect to the corresponding signal links according to the control signal, so as to form the signal acquisition link of the target channel, and sequentially acquire signals of the signal acquisition links, and when the signal of the current signal acquisition link is tested, the current signal acquisition link is simultaneously controlled to be electrically isolated from or in a high-impedance state with respect to other signal acquisition links, so that a plurality of signals are measured in one channel, and the signal acquisition of different links of the same channel is not interfered with each other, thereby solving the problem that the high speed and the high efficiency of data acquisition are affected by the mutual interference between signals in the process of synchronously acquiring the signal of the distributed data sensor in the background art.
Example two
Referring to FIG. 2, a distributed data collection method according to a first embodiment of the present invention is shown, including steps S21-S25.
And S21, obtaining a target channel measuring signal, obtaining a control signal sent by the signal switch according to the measuring signal, and controlling a plurality of signal switches to connect with corresponding signal acquisition links according to the control signal.
Typically, the signal switch connects the signal input terminal IN to the signal output terminal OUT1 by default. When a signal of a target channel needs to be measured, a measuring signal is sent, when the measuring signal of the target channel is obtained, signals at signal input interfaces of a plurality of signal switches are detected according to the measuring signal, and when a control signal EN sent by the signal switch is obtained, a signal input end IN of the signal switch is controlled to be connected to a corresponding signal output interface OUT2 according to the control signal EN, so that a signal acquisition link is formed. And the signal switches are respectively and correspondingly connected to the corresponding signal acquisition links according to the control signals. Thus, a plurality of series connected signal switches form a plurality of signal acquisition chains of the target channel.
S22, the signal output end OUT1 of the signal switch is controlled to be in a floating state.
When the signal input terminal IN of the signal switch is connected to the signal output terminal OUT2, the signal output terminal OUT1 of the corresponding control signal switch is IN a floating state, so that the signal output terminal OUT2 has no signal output, and the interference between signals is reduced.
And S23, sequentially acquiring the signals of the signal acquisition link according to the measurement signals.
The signal switches are respectively and correspondingly connected to the sensor equipment, and the signals of the sensors are acquired according to the formed signal acquisition links. The sensor equipment comprises a voltage output sensor, a vibrating wire sensor, a temperature sensor, a current output type sensor, an RS485 type sensor and the like.
Specifically, starting from the first signal switch of the signal input, assume that the circuit is provided with two stages of signal switches, wherein the signal switch a is connected IN series with the signal switch B, the signal switch a _ a is used as the front end of the channel, and the external sensor is connected for signal input and channel chip selection. The A signal switch OUT1_ A is suspended to avoid signal crosstalk, a signal output interface OUT2_ A of the A signal switch is connected to a signal input end IN _ B of a next-stage B signal switch, a signal output end OUT1_ B box OUT2_ B of the B signal switch is respectively connected to corresponding signal acquisition links, and signal acquisition of the sensors is carried OUT IN sequence according to the formed signal acquisition links, so that signals of the sensors cannot interfere with one another, and the function of realizing multiple signal acquisition by one channel is realized.
And S24, controlling the current measured signal acquisition link of the target channel to be in an electrical isolation state or a high impedance state with other signal acquisition links of the target channel.
When the signal of the target channel is collected, the current measured signal collection link of the target channel and other current unmeasured signal collection links of the target channel are controlled to be in an electrical isolation state or a high resistance state, so that the signals collected by different signal collection links in one collection channel are not interfered with each other.
And S25, when the control signal is not detected, controlling the target channel to be electrically open-circuited, controlling the signal input end IN to be connected with the signal output end OUT1, and controlling the signal output end OUT1 to be IN an electrically isolated state or a high-impedance state.
When the channel does not collect signals, the channel is controlled to be electrically opened, the signal input end IN of the signal switch is defaulted to be connected with the signal output end OUT1, and the signal input end OUT1 is controlled to be IN an electrical isolation state or a high-resistance state, so that the channel cannot collect sensor signals and does not cause interference with other channels when collecting the sensor signals.
In summary, in the distributed data acquisition method in the above embodiments of the present invention, the measurement signal of the target channel is obtained, the control signal of the signal switch is obtained according to the measurement signal, and the plurality of signal switches are controlled to connect to the corresponding signal links according to the control signal, so as to form the signal acquisition link of the target channel, and sequentially acquire signals of the signal acquisition links, and when the signal of the current signal acquisition link is tested, the current signal acquisition link is simultaneously controlled to be electrically isolated from or in a high-impedance state with respect to other signal acquisition links, so that a plurality of signals are measured in one channel, and the signal acquisition of different links of the same channel is not interfered with each other, thereby solving the problem that the high speed and the high efficiency of data acquisition are affected by the mutual interference between signals in the process of synchronously acquiring the signal of the distributed data sensor in the background art.
EXAMPLE III
Another aspect of the present invention further provides a distributed data acquisition system, please refer to fig. 3, which shows a system block diagram of a distributed data acquisition method in this embodiment, the system is applied to a distributed data acquisition circuit, the distributed data acquisition circuit includes a plurality of signal switches connected in series, and the system includes:
the signal acquisition link control module is used for acquiring a target channel measurement signal, acquiring a control signal sent by the signal switches according to the measurement signal, controlling the signal switches to be connected with corresponding signal acquisition links according to the control signal,
the signal acquisition module is used for sequentially acquiring signals of the signal acquisition link according to the measurement signals;
and the signal link isolation module is used for controlling the currently measured signal acquisition link of the target channel to be in an electrical isolation state or a high impedance state with other signal acquisition links of the target channel.
Further, in some other optional embodiments, the signal acquisition link control module includes:
and the signal switch control unit is used for controlling the signal input end IN of the signal switch to be connected with the signal output interface OUT2 according to the control signal of the signal switch so as to form a signal acquisition link corresponding to the signal switch.
Further, in some other optional embodiments, the system further comprises:
and the signal output end OUT1 control unit is used for controlling the signal output end OUT1 of the signal switch to be in a floating state.
Further, in some other optional embodiments, the system further comprises:
and the channel isolation control module is used for controlling the target channel to be electrically opened when the control signal is not detected, controlling the signal input end IN to be connected with the signal output end OUT1, and controlling the signal output end OUT1 to be IN an electrically isolated state or a high-impedance state.
Further, in some other optional embodiments, the system further comprises:
and the sensor connecting module is used for controlling the signal switch to be connected with the sensor equipment through a plurality of communication interface modules so as to acquire signals of the sensor equipment, and the sensor equipment comprises a voltage output sensor, a vibrating wire sensor, a temperature sensor, a current output type sensor and an RS485 type sensor.
The functions or operation steps of the modules and units when executed are substantially the same as those of the method embodiments, and are not described herein again.
In summary, in the distributed data acquisition system in the above embodiments of the present invention, the measurement signal of the target channel is obtained, the control signal of the signal switch is obtained according to the measurement signal, and the plurality of signal switches are controlled to connect to the corresponding signal links according to the control signal, so as to form the signal acquisition link of the target channel, and sequentially acquire signals of the signal acquisition links, and when the signal of the current signal acquisition link is tested, the current signal acquisition link is simultaneously controlled to be electrically isolated from or in a high-impedance state with respect to other signal acquisition links, so that a plurality of signals are measured in one channel, and signal acquisition of different links of the same channel is not interfered with each other, thereby solving the problem that the high speed and high efficiency of data acquisition are affected by the mutual interference between signals in the process of synchronously acquiring the signal of the distributed data sensor in the background art.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the steps of the distributed data acquisition method in the foregoing embodiments.
Example four
In another aspect, the present invention further provides an apparatus, where the system includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor executes the computer program to implement the distributed data acquisition method in the foregoing embodiments. In some embodiments, the processor may be an Electronic Control Unit (ECU), a Central Processing Unit (CPU), a controller, a microcontroller, a microprocessor or other data processing chip, and is configured to run program codes stored in the memory or process data, such as executing an access restriction program.
Wherein the memory includes at least one type of readable storage medium including flash memory, hard disks, multimedia cards, card-type memory (e.g., SD or DX memory, etc.), magnetic memory, magnetic disks, optical disks, etc. The memory may in some embodiments be an internal storage unit of the vehicle, such as a hard disk of the vehicle. The memory may also be an external storage device of the vehicle in other embodiments, such as a plug-in hard drive provided on the vehicle, a Smart Media Card (SMC), a Secure Digital (SD) card, a flash memory card (FlashCard), and the like. Further, the memory may also include both an internal storage unit and an external storage device of the vehicle. The memory may be used not only to store application software installed in the vehicle and various types of data, but also to temporarily store data that has been output or is to be output.
In summary, in the device in the above embodiments of the present invention, the measurement signal of the target channel is obtained, the control signals of the signal switches are obtained according to the measurement signal, and the plurality of signal switches are controlled according to the control signals to connect to the corresponding signal links, so as to form the signal acquisition link of the target channel, and sequentially acquire the signals of the signal acquisition links, and when the signal of the current signal acquisition link is tested, the current signal acquisition link is simultaneously controlled to be electrically isolated from or in a high-impedance state with respect to other signal acquisition links, so that a plurality of signals are measured in one channel, and signal acquisition between different links of the same channel is not interfered with each other, thereby solving the problem that the high speed and high efficiency of data acquisition are affected by the mutual interference between signals in the process of synchronously acquiring the signals of the distributed data sensor in the background art.
The logic and/or steps represented in the flowcharts or otherwise described herein, e.g., an ordered listing of executable instructions that can be considered to implement logical functions, can be embodied in any computer-readable medium for use by or in connection with an instruction execution system, apparatus, or device, such as a computer-based system, processor-containing system, or other system that can fetch the instructions from the instruction execution system, apparatus, or device and execute the instructions. For the purposes of this description, a "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transport the program for use by or in connection with the instruction execution system, apparatus, or device.
More specific examples (a non-exhaustive list) of the computer-readable medium would include the following: an electrical connection (electronic device) having one or more wires, a portable computer diskette (magnetic device), a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disc read-only memory (CDROM). Additionally, the computer-readable medium could even be paper or another suitable medium upon which the program is printed, as the program can be electronically captured, via for instance optical scanning of the paper or other medium, then compiled, interpreted or otherwise processed in a suitable manner if necessary, and then stored in a computer memory.
It should be understood that portions of the present invention may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.
In the description of the specification, reference to the description of "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is specific and detailed, but not to be understood as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A distributed data acquisition circuit, the distributed data acquisition circuit comprising a plurality of serially connected signal switches, the method comprising:
acquiring a target channel measuring signal, acquiring a control signal sent by the signal switch according to the measuring signal, and controlling a plurality of signal switches to be connected with corresponding signal acquisition links according to the control signal;
sequentially collecting signals of the signal collection link according to the measurement signals;
and controlling the currently measured signal acquisition link of the target channel to be in an electrical isolation state or a high-impedance state with other signal acquisition links of the target channel.
2. The distributed data collection method of claim 1, wherein said signal switches comprise a signal input terminal IN and two signal output terminals OUT1 and OUT2, and said step of obtaining control signals sent by said signal switches, and controlling a plurality of said signal switches to connect to corresponding signal collection links according to said control signals comprises:
and controlling a signal input end IN of the signal switch to be connected with a signal output interface OUT2 according to the control signal of the signal switch so as to form a signal acquisition link corresponding to the signal switch.
3. The distributed data collection method of claim 2, wherein the step of controlling the signal switch to connect the signal input terminal IN to the signal output interface OUT2 according to the control signal of the signal switch further comprises:
the signal output terminal OUT1 of the signal switch is controlled to be in a floating state.
4. A distributed data collection method according to claim 1, said method further comprising:
when the control signal is not detected, the target channel is controlled to be electrically open-circuited, the signal input end IN is controlled to be connected with the signal output end OUT1, and the signal output end OUT1 is controlled to be IN an electrically isolated state or a high-impedance state.
5. A distributed data collection method according to claim 1, said method further comprising:
the signal switch is connected with the sensor equipment through the communication interface modules so as to collect signals of the sensor equipment, and the sensor equipment comprises a voltage output sensor, a vibrating wire sensor, a temperature sensor, a current output type sensor and an RS485 type sensor.
6. A distributed data acquisition system for use on a distributed data acquisition circuit comprising a plurality of serially connected signal switches, the system comprising:
the signal acquisition link control module is used for acquiring a target channel measurement signal, acquiring a control signal sent by the signal switches according to the measurement signal, controlling the signal switches to be connected with corresponding signal acquisition links according to the control signal,
the signal acquisition module is used for sequentially acquiring signals of the signal acquisition link according to the measurement signals;
and the signal link isolation module is used for controlling the currently measured signal acquisition link of the target channel to be in an electrical isolation state or a high impedance state with other signal acquisition links of the target channel.
7. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the distributed data acquisition method according to any one of claims 1 to 5.
8. A data processing apparatus comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the distributed data acquisition method of any one of claims 1 to 5 when executing the program.
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| WO2020107171A1 (en) * | 2018-11-26 | 2020-06-04 | 上海晶丰明源半导体股份有限公司 | Control circuit, driving system, chip, control method and driving method |
| CN110955164A (en) * | 2019-11-18 | 2020-04-03 | 武汉禾大科技有限公司 | Single-channel multi-channel signal acquisition circuit |
| CN113691250A (en) * | 2020-05-18 | 2021-11-23 | 湖南工业大学 | Remote direct current switch signal matcher |
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