CN111682736A - Data acquisition terminal power supply sharing equipment and overload protection method thereof - Google Patents
Data acquisition terminal power supply sharing equipment and overload protection method thereof Download PDFInfo
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- CN111682736A CN111682736A CN201910169681.7A CN201910169681A CN111682736A CN 111682736 A CN111682736 A CN 111682736A CN 201910169681 A CN201910169681 A CN 201910169681A CN 111682736 A CN111682736 A CN 111682736A
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- acquisition terminal
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/32—Means for protecting converters other than automatic disconnection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/009—Converters characterised by their input or output configuration having two or more independently controlled outputs
Abstract
A data acquisition terminal power sharing device and an overload protection method thereof comprise a power supply, a plurality of data acquisition terminals which are connected in series and then powered by the power supply, a TOT cloud platform which is wirelessly connected with each data acquisition terminal, and a display terminal which is wirelessly connected with the TOT cloud platform, wherein each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor which is internally arranged at the data acquisition terminal; the STM32 processor is used for collecting ESD data in the data acquisition terminal and transmitting the data to the TOT cloud platform, and the TOT cloud platform transmits the data to the display terminal.
Description
Technical Field
The invention relates to a data acquisition terminal power supply sharing device, in particular to a data acquisition terminal power supply sharing device and an overload protection method thereof.
Background
The data acquisition terminal equipment mainly comprises grounding data acquisition, table mat surface resistance acquisition, wrist belt data acquisition, temperature and humidity data acquisition, electric iron voltage data acquisition and the like.
Every data acquisition terminal equipment all need be equipped with a power adapter, and because the removal of personnel, equipment etc. when equipment uses in the mill, data acquisition terminal also need along with personnel, equipment remove, often meets supply socket scheduling problem inadequately.
Disclosure of Invention
The invention aims to provide a data acquisition terminal power sharing device and an overload protection method thereof, and aims to solve the technical problem that a power socket of a power adapter in the prior art is insufficient.
The data acquisition terminal power sharing equipment is characterized by comprising a power supply, a plurality of data acquisition terminals, a TOT cloud platform and a display terminal, wherein the data acquisition terminals are connected in series and then powered by the power supply, the TOT cloud platform is wirelessly connected with each data acquisition terminal, the display terminal is wirelessly connected with the TOT cloud platform, and each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor which is internally arranged at the data acquisition terminal; the STM32 processor is used for collecting ESD data in the data acquisition terminal and transmitting the data to the TOT cloud platform, and the TOT cloud platform transmits the data to the display terminal.
Further preferably, an alarm device is arranged in each data acquisition terminal.
Further, when the voltage acquired by the STM32 processor after ADC is converted to analog is smaller than a preset threshold value, an alarm device of the data acquisition terminal gives an alarm, and power-off measures are taken for the data acquisition terminal artificially.
Further, the STM32 processor acquires that the voltage after ADC analog-to-digital conversion is smaller than a preset threshold value, an alarm device of the data acquisition terminal gives an alarm, and the data acquisition terminal stops data acquisition.
Furthermore, the power supply input port is a MICRO USB socket, and the power supply output port is a MINI USB socket; and the power supply input port and the power supply output port are both VCC D-D + ID GND interfaces.
In addition, the inside ID pin of MICRO USB end of power supply wire rod end is connected with VCC pin, and is first the MICRO USB seat at data acquisition terminal links to each other with VCC pin, and is first data acquisition terminal voltage is highest.
More preferably, the display terminal is a computer or a mobile visual device.
An overload protection method for a power sharing device of a data acquisition terminal is characterized by comprising the following steps:
step S1: presetting a voltage threshold value: assuming that the power consumption of each data acquisition terminal device is H, and the load carrying capacity of the power supply is also known as L, it can be obtained that the power supply can carry N devices, where N is L/H, the threshold value of the voltage of each data acquisition terminal is set to VCC-N × Vdrop;
step S2: judging whether overload occurs: and the voltage of the ADC acquired by the data acquisition terminal after analog-to-digital conversion is less than VCC-N Vdrop, an alarm device in the data acquisition terminal gives an alarm, and the data acquisition terminal stops working.
An overload protection method for a power sharing device of a data acquisition terminal is characterized by comprising the following steps:
step S1: presetting a voltage threshold value: assuming that the power consumption of each data acquisition terminal device is H, the loading capacity of the power supply is also known as L, so that the power supply can load N devices, where N is L/H;
step S2: judging whether overload occurs: the access data acquisition terminal is the Mth equipment, the ADC analog-to-digital conversion voltage that this data acquisition terminal's STM32 read is VO, then M ═ VCC-VO)/Vdrop, the relation of STM32 comparison N and M at data acquisition terminal, if M is greater than N, then power supply overloads, this Mth equipment and data acquisition terminal's STM32 control alarm device behind it send out the police dispatch newspaper, the STM32 that overloads data acquisition terminal is simultaneously with equipment overload data transmission to display terminal on
The implementation of the invention can achieve the following beneficial effects:
the invention can utilize the power socket to the maximum extent, reduces unnecessary power wiring, supplies power in series between the data acquisition terminals, has a power overload detection function, saves the cost of the power adapter, realizes plug and play, and is convenient and fast.
According to the invention, the collected ESD data is processed by the STM32 processor, and the data is uploaded to the TOT cloud platform in a WIFI/GPRS/LORA wireless mode, the voltage value collected by the ADC port of the STM32 processor judges that the current equipment is the second access equipment of a power supply load, when the STM32 processor judges that the access equipment is overloaded, the alarm equipment of the equipment is indicated to alarm, and the scheme that a plurality of data collection terminals are connected in series and share one power supply is selected, so that the requirement of a working area on the number of power jacks can be reduced, the use of a power adapter is reduced, and the power supply mode is flexible and the cost is saved.
Drawings
FIG. 1 is a schematic diagram of a structure in which a plurality of data acquisition terminals are connected in series according to the present invention;
fig. 2 is a schematic diagram of the electrical connection between the first data acquisition terminal and the power supply 1 according to the present invention.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
A data acquisition terminal power sharing device comprises a power supply 1, a plurality of data acquisition terminals 2 which are connected in series and then powered by the power supply, a TOT cloud platform wirelessly connected with each data acquisition terminal, and a display terminal wirelessly connected with the TOT cloud platform, wherein each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor which is arranged in the data acquisition terminal; the STM32 processor is used for collecting ESD data in the data acquisition terminal and transmitting the data to the TOT cloud platform, and the TOT cloud platform transmits the data to the display terminal.
The first embodiment,
A data acquisition terminal power sharing device comprises a power supply 1, a plurality of data acquisition terminals 2 which are connected in series and then supply power through the power supply, a TOT cloud platform (not shown in the figure) which is wirelessly connected with each data acquisition terminal, and a display terminal (not shown in the figure) which is wirelessly connected with the TOT cloud platform, wherein as shown in figure 2, figure 2 mainly shows an electric connection diagram of a first data acquisition terminal and the power supply 1, and each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor 3 which is internally arranged at the data acquisition terminal; the STM32 treater is used for gathering the ESD data in the data acquisition terminal to data transmission to TOT cloud platform, TOT cloud platform is equipped with alarm device 4 with data transmission to display terminal in every data acquisition terminal. The STM32 processor acquires that the voltage after ADC analog-to-digital conversion is less than a preset threshold value, and an alarm device of the data acquisition terminal gives an alarm to take power-off measures for the data acquisition terminal artificially.
Example II,
A data acquisition terminal power sharing device comprises a power supply, a plurality of data acquisition terminals, a TOT cloud platform and a display terminal, wherein the data acquisition terminals are connected in series and then powered by the power supply, the TOT cloud platform is wirelessly connected with each data acquisition terminal, the display terminal is wirelessly connected with the TOT cloud platform, and each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor which is internally arranged in the data acquisition terminal; the STM32 processor is used for collecting ESD data in the data collection terminal and transmitting the data to the TOT cloud platform, and the TOT cloud platform transmits the data to the display terminal; when the voltage acquired by the STM32 processor after ADC is less than a preset threshold value, an alarm device of the data acquisition terminal gives an alarm, and the data acquisition terminal stops data acquisition;
example III,
A data acquisition terminal power sharing device comprises a power supply, a plurality of data acquisition terminals, a TOT cloud platform and a display terminal, wherein the data acquisition terminals are connected in series and then powered by the power supply, the TOT cloud platform is wirelessly connected with each data acquisition terminal, the display terminal is wirelessly connected with the TOT cloud platform, and each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor which is internally arranged in the data acquisition terminal; the STM32 processor is used for collecting ESD data in the data collection terminal and transmitting the data to the TOT cloud platform, and the TOT cloud platform transmits the data to the display terminal; when the voltage acquired by the STM32 processor after ADC is less than a preset threshold value, an alarm device of the data acquisition terminal gives an alarm, and the data acquisition terminal stops data acquisition; the power input port is a MICRO USB seat, and the power output port is a MINI USB seat; the power supply input port and the power supply output port are VCC D-D + IDGND interfaces; the inside ID pin of MICRO USB end of power supply wire rod end is connected with VCC pin, and is first the MICRO USB seat at data acquisition terminal links to each other with VCC pin, and is first data acquisition terminal voltage is the highest.
Example four,
A data acquisition terminal power sharing device comprises a power supply, a plurality of data acquisition terminals, a TOT cloud platform and a display terminal, wherein the data acquisition terminals are connected in series and then powered by the power supply, the TOT cloud platform is wirelessly connected with each data acquisition terminal, the display terminal is wirelessly connected with the TOT cloud platform, and each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor which is internally arranged in the data acquisition terminal; the STM32 processor is used for collecting ESD data in the data collection terminal and transmitting the data to the TOT cloud platform, and the TOT cloud platform transmits the data to the display terminal; when the voltage acquired by the STM32 processor after ADC is less than a preset threshold value, an alarm device of the data acquisition terminal gives an alarm, and the data acquisition terminal stops data acquisition; the power input port is a MICRO USB seat, and the power output port is a MINI USB seat; the power supply input port and the power supply output port are VCC D-D + IDGND interfaces; the inside ID pin of MICRO USB end of power supply wire rod end is connected with VCC pin, and is first the MICRO USB seat at data acquisition terminal links to each other with VCC pin, and first data acquisition terminal voltage is the highest, and display terminal is computer or removes visual equipment, and the staff can carry out power overload information according to the equipment information that display terminal shows and judge.
Example V,
Each device of the data acquisition terminal is provided with a power supply input interface and a power supply output interface, the input port is a MICRO USB socket, and the output port is a MINI USB socket. The definition of the two interfaces is completely consistent and is VCC D-D + ID GND. (the serial power supply method is not limited to the USB physical interface), the MICRO USB end internal ID pin of the power wire end is connected to the VCC pin. The MICRO USB ID at the input port of the first device is connected to VCC, so that the voltage is high, and the MICRO USB ID pin passes through a diode and is then output to the MINI USB ID pin. The detected voltage drops by one diode drop Vdrop every time a device is switched in.
An STM32 processor is arranged in each data acquisition terminal and used for processing the acquired ESD data and uploading the data to the TOT cloud platform in a WIFI/GPRS/LORA wireless mode. Therefore, the current equipment can be judged to be the second access equipment of the power load according to the voltage value acquired by the ADC port of the data processor STM32 arranged in the data acquisition terminal. If the voltage value after the ADC value analog-to-digital conversion is VCC-Vdrop, it indicates that the currently accessed device is the first device of the power load, and if the voltage value is VCC-N × Vdrop, it indicates that the currently accessed device is the nth device of the power load.
The operating current of each device is known, the power consumption is set to be H, and the loading capacity of the power supply is also known to be L, so that the power supply can load N devices, wherein N is L/H.
The number of the loaded devices of the power supply is set in the STM32 bottom layer driving program, namely a voltage threshold value is set, and when the voltage after ADC analog-to-digital conversion acquired by the data acquisition terminal device is smaller than a certain preset threshold value (VCC-N Vdrop), the device uses the existing data abnormity alarm red light and the buzzer of the device to give an alarm and stops other work. Therefore, M devices (M is less than or equal to N) which are firstly connected with the power supply continue to work normally without being influenced, the devices (M is more than N) which are connected with the load part flash in red, and the buzzer sounds and stops other work.
The scheme of selecting the shared power supply can reduce the requirement of the working area on the number of power supply jacks and reduce the use of the power supply adapter. The power supply mode is flexible and saves cost.
An overload protection method for a power sharing device of a data acquisition terminal comprises the following steps:
step S1: presetting a voltage threshold value: assuming that the power consumption of each data acquisition terminal device is H, and the load carrying capacity of the power supply is also known as L, it can be obtained that the power supply can carry N devices, where N is L/H, the threshold value of the voltage of each data acquisition terminal is set to VCC-N × Vdrop;
step S2: judging whether overload occurs: and the voltage of the ADC acquired by the data acquisition terminal after analog-to-digital conversion is less than VCC-N Vdrop, an alarm device in the data acquisition terminal gives an alarm, and the data acquisition terminal stops working.
An overload protection method for a power sharing device of a data acquisition terminal comprises the following steps:
step S1: presetting a voltage threshold value: assuming that the power consumption of each data acquisition terminal device is H, the loading capacity of the power supply is also known as L, so that the power supply can load N devices, where N is L/H;
step S2: judging whether overload occurs: the access data acquisition terminal is the M-th equipment, the ADC analog-to-digital conversion voltage that this data acquisition terminal's STM32 read is VO, then M ═ VCC-VO)/Vdrop, the relation of STM32 comparison N and M at data acquisition terminal, if M is greater than N, then power supply overloads, this M-th equipment and data acquisition terminal's STM32 control alarm device behind it send out the police dispatch newspaper, the STM32 that overloads data acquisition terminal is with equipment overload data transmission to display terminal on simultaneously.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (9)
1. The data acquisition terminal power sharing equipment is characterized by comprising a power supply, a plurality of data acquisition terminals, a TOT cloud platform and a display terminal, wherein the data acquisition terminals are connected in series and then powered by the power supply, the TOT cloud platform is wirelessly connected with each data acquisition terminal, the display terminal is wirelessly connected with the TOT cloud platform, and each data acquisition terminal comprises a power supply input port, a power supply output port and an STM32 processor which is internally arranged at the data acquisition terminal; the STM32 processor is used for collecting ESD data in the data acquisition terminal and transmitting the data to the TOT cloud platform, and the TOT cloud platform transmits the data to the display terminal.
2. The data acquisition terminal power sharing device of claim 1 wherein an alarm device is provided in each of the data acquisition terminals.
3. The power sharing device of the data acquisition terminal as claimed in claim 2, wherein the voltage acquired by the STM32 processor after ADC is less than a predetermined threshold, and an alarm device of the data acquisition terminal gives an alarm to manually take power-off measures to the data acquisition terminal.
4. The power supply sharing device of the data acquisition terminal as claimed in claim 3, wherein the STM32 processor acquires that the voltage after ADC analog-to-digital conversion is less than a predetermined threshold value, the alarm device of the data acquisition terminal gives an alarm, and the data acquisition terminal stops data acquisition.
5. The data acquisition terminal power sharing device of claim 1 wherein the power input port is a MICRO USB socket and the power output port is a MINI USB socket; and the power supply input port and the power supply output port are VCC D-D + IDGND interfaces.
6. The power sharing device of the data acquisition terminal as claimed in claim 5, wherein the inside ID pin of the MICROUSB end of the power supply wire end is connected with the VCC pin, the first MICROUSB seat of the data acquisition terminal is connected with the VCC pin, and the voltage of the first data acquisition terminal is the highest.
7. The power sharing device of claim 5, wherein the display terminal is a computer or a mobile visual device.
8. The overload protection method for the power sharing equipment of the data acquisition terminal as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
step S1: presetting a voltage threshold value: assuming that the power consumption of each data acquisition terminal device is H, and the load carrying capacity of the power supply is also known as L, it can be obtained that the power supply can carry N devices, where N is L/H, the threshold value of the voltage of each data acquisition terminal is set to VCC-N × Vdrop;
step S2: judging whether overload occurs: and the voltage of the ADC acquired by the data acquisition terminal after analog-to-digital conversion is less than VCC-N Vdrop, an alarm device in the data acquisition terminal gives an alarm, and the data acquisition terminal stops working.
9. The overload protection method for the power sharing equipment of the data acquisition terminal as claimed in any one of claims 1 to 7, characterized by comprising the following steps:
step S1: presetting a voltage threshold value: assuming that the power consumption of each data acquisition terminal device is H, the loading capacity of the power supply is also known as L, so that the power supply can load N devices, where N is L/H;
step S2: judging whether overload occurs: the access data acquisition terminal is the M-th equipment, the ADC analog-to-digital conversion voltage that this data acquisition terminal's STM32 read is VO, then M ═ VCC-VO)/Vdrop, the relation of STM32 comparison N and M at data acquisition terminal, if M is greater than N, then power supply overloads, this M-th equipment and data acquisition terminal's STM32 control alarm device behind it send out the police dispatch newspaper, the STM32 that overloads data acquisition terminal is with equipment overload data transmission to display terminal on simultaneously.
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