CN110008763A - A kind of the analog sensor equipment and its application of multiplex roles - Google Patents
A kind of the analog sensor equipment and its application of multiplex roles Download PDFInfo
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- CN110008763A CN110008763A CN201910361383.8A CN201910361383A CN110008763A CN 110008763 A CN110008763 A CN 110008763A CN 201910361383 A CN201910361383 A CN 201910361383A CN 110008763 A CN110008763 A CN 110008763A
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 30
- 238000004891 communication Methods 0.000 claims abstract description 21
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 14
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 claims description 48
- 238000000034 method Methods 0.000 claims description 14
- 230000005611 electricity Effects 0.000 claims description 10
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000012549 training Methods 0.000 claims description 4
- 238000013480 data collection Methods 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000004088 simulation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 241000235342 Saccharomycetes Species 0.000 description 2
- 238000005094 computer simulation Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000008447 perception Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06G—ANALOGUE COMPUTERS
- G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
- G06G7/48—Analogue computers for specific processes, systems or devices, e.g. simulators
- G06G7/66—Analogue computers for specific processes, systems or devices, e.g. simulators for control systems
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Abstract
The present invention discloses the analog sensor equipment and its application of a kind of multiplex roles, equipment includes controller, the energization pins of controller are connected with voltage stabilizing chip, the input terminal of voltage stabilizing chip accesses 12-24V DC power supply, voltage stabilizing chip exports the energization pins of 3.3V DC voltage to controller, one SPI interface of controller is connected with current D-A conversion circuit, current D-A conversion circuit connection 12-24V DC power supply simultaneously exports analog quantity DC current, two USART interfaces of controller are connected separately with WiFi communication circuit and RS485 telecommunication circuit, the integrated bus interface of controller connects display screen, one general I/O interface of controller is connected with voltage D/A converting circuit, voltage D/A converting circuit exports digital quantity DC voltage or analog quantity DC voltage；Controller is by WiFi communication circuit and RS485 telecommunication circuit and provides the host computer communication connection of dummy acquisition data.The present invention is the more true analog sensor of hardware device, and teaching efficiency is more preferable.
Description
Technical field
The present invention relates to the analog sensor equipment for educating Practical training equipment field more particularly to a kind of multiplex roles and its answer
With.
Background technique
In the relevant real training Scenario Design of Internet of Things, many Sensor Problems can be encountered.It is such as high-precision including selling at exorbitant prices
Spend laser displacement sensor；The environment for not acquiring data, such as saccharomycete concentration sensor；Use process is dangerous, such as fire
Flame sensor；Volume is excessive, such as light curtain door.
Existing virtual-sensor is usually that pure software programming is realized, using not having on computer simulation sensor and computer
AO/DO mouthfuls, which can only walk serial ports, and only data with serial ports are passed to their corresponding experimental boxs, existing void by support
Quasi- sensor is not independent hardware to simulate actual sensor according to software programming to generate data, lacks actual sensor
The sense of reality causes the experience of teaching process untrue, influences teaching efficiency.
Summary of the invention
The purpose of the present invention is to provide a kind of analog sensor equipment of multiplex roles and its applications.
The technical solution adopted by the present invention is that:
A kind of analog sensor equipment of multiplex roles comprising controller, the energization pins of controller are connected with voltage stabilizing chip, surely
The input terminal of chip is pressed to access 12-24V DC power supply, voltage stabilizing chip exports the energization pins of 3.3V DC voltage to controller,
One SPI interface of controller is connected with current D-A conversion circuit, and current D-A conversion circuit connects 12-24V DC power supply
And analog quantity DC current is exported, two USART interfaces of controller are connected separately with WiFi communication circuit and RS485 communication electricity
Road, a general I/O interface of controller are connected with voltage D/A converting circuit, and it is straight that voltage D/A converting circuit exports digital quantity
Galvanic electricity pressure or analog quantity DC voltage；
Controller is communicated to connect by WiFi communication circuit and RS485 telecommunication circuit and host computer, and the optional output of host computer is different
The dummy acquisition data of type sensor, controller connect sensor number with D/A converting circuit by current D-A conversion circuit
According to acquisition equipment.
Further, voltage D/A converting circuit based on the output signal of controller carry out analog-to-digital conversion or digital-to-analogue conversion or
PWM processing output d. c. voltage signal.
Further, the d. c. voltage signal includes the analog DC voltage of 0-3.3V or the digital direct galvanic electricity of 0/3.3V
Pressure.
Further, the analog DC of current D-A conversion circuit output 0-20mA or 4-20mA or 0-24mA.
Further, another SPI interface of controller connects LoRa chip, and controller connects LoRa by LoRa chip
Gateway.
Further, the integrated bus interface of controller connects display screen, also connects on another general I/O interface of controller
It is connected to control button, control button is used for the function control of analog sensor, enables or closes.
Further, the current D-A conversion circuit uses AD5410 chip, and controller uses model
The single-chip microcontroller of STM32L151C8, WiFi communication circuit use ESP-12F chip, and RS485 communication interface uses MAX3485 chip,
Display screen is OLED display screen, and voltage stabilizing chip selects LM2576-3.3 chip.
Further, the invention discloses a kind of control methods of the analog sensor equipment of multiplex roles comprising following
Step:
Step 1, analog sensor device power initializes；
Step 2, controller judges whether to receive the dummy acquisition data sent from host computer；
When receiving dummy acquisition data, step 3 is executed；Otherwise, step 4 is executed；
Step 3, judge whether to need to enable LoRa mode:
When not needing to enable LoRa mode, controller exports the DC current of analog quantity simultaneously by current D-A conversion circuit
The DC current size of analog quantity is shown on a display screen, and executes step 2；
When needing to enable LoRa mode, controller shows current virtual acquisition data simultaneously by dummy acquisition number on a display screen
According to caching to buffer area, and execute step 4；
Step 4, controller judges whether to receive the poll instruction of LoRa gateway；
When the poll for receiving LoRa gateway instructs, the dummy acquisition data of buffer area are sent to LoRa gateway, and execute step
Rapid 2；
When the poll for not receiving LoRa gateway instructs, 2 are thened follow the steps.
Further, the invention discloses a kind of Internet of Things experience systems, are passed using a kind of simulation of multiplex roles
Sensor equipment；Experience system includes Internet of Things cloud platform, things-internet gateway, LoRa gateway, serial server and monitoring camera；
Things-internet gateway, LoRa gateway, serial server and monitoring camera access same local area network, which has client
Machine, server and work station, the local area network pass through public network and Internet of Things cloud platform communication connection,
The input terminal connection of analog sensor provides the host computer of dummy acquisition data, and analog sensor is connected by LoRa node
LoRa gateway, the voltage D/A converting circuit or current D-A conversion circuit output end of analog sensor are connected with internet of things data
Collector, actual sensor are set in true environment and obtain true acquisition data, and the output end of actual sensor connects Internet of Things
Network data collector, internet of things data collection are separately connected serial server and things-internet gateway, the output of actual sensor
End also passes sequentially through ZigBee node and connects serial server with ZigBee coordinator, and serial server is connected with serial equipment.
Further, a host computer is separately connected more than two analog sensors, and each analog sensor all has
Unique identity address, host computer identity-based mark address are respectively that different analog sensor offers is different types of
Dummy acquisition data.Further, actual sensor is temperature sensor or humidity sensor.
The invention adopts the above technical scheme, and analog sensor of the invention obtains in the simulation application scene of host computer
Data, and then access true sensor data acquisition equipment in a manner of similar ordinary sensors and upload the data of acquisition.
Unlike the virtual-sensor of other pure softwares only supports serial ports to export, the present invention is not pure software simulation, but independent
For hardware more like an actual sensor, the present invention supports simulation actual sensor output analog current, analog voltage and number electricity
Pressure.The present invention obtains different dummy acquisition data according to the difference of host computer simulation application scene, and then simulates different types of
Sensor exports corresponding data to true sensor data acquisition equipment, realizes a virtual-sensor experience different type
The true collection process of sensor.The virtual data that analog sensor of the invention can be provided according to host computer simulates multiple types
Sensor, the true teaching efficiency of students experience is more preferable.
Detailed description of the invention
The present invention is described in further details below in conjunction with the drawings and specific embodiments；
Fig. 1 is a kind of circuit principle structure schematic diagram of the analog sensor equipment of multiplex roles of the present invention；
Fig. 2 is a kind of flow diagram of the control method of the analog sensor equipment of multiplex roles of the present invention；
Fig. 3 is a kind of structural schematic diagram of Internet of Things experience system of the present invention.
Specific embodiment
As shown in Figure 1, the invention discloses a kind of analog sensor equipment of multiplex roles comprising controller, controller
Energization pins be connected with voltage stabilizing chip, the input terminal of voltage stabilizing chip accesses 12-24V DC power supply, and voltage stabilizing chip exports 3.3V
For DC voltage to the energization pins of controller, a SPI interface of controller is connected with current D-A conversion circuit, current D-A
Conversion circuit connection 12-24V DC power supply simultaneously exports analog quantity DC current, and two USART interfaces of controller are separately connected
There are WiFi communication circuit and RS485 telecommunication circuit, a general I/O interface of controller is connected with voltage D/A converting circuit, electricity
Press D/A converting circuit output digital quantity DC voltage or analog quantity DC voltage；Controller by WiFi communication circuit and
RS485 telecommunication circuit and host computer communicate to connect, the dummy acquisition data of the optional output dissimilar sensor of host computer, control
Device connects sensor data acquisition equipment with D/A converting circuit by current D-A conversion circuit.
Specifically, the simulation software of virtual scene (NewEnvironment, abbreviation NE), user are configured on host computer
Virtual environment can be configured in software, and configuration generates the logical algorithm of data, may exist multiple lifes in a virtual environment
At the data source of data, and then emulation forms dummy acquisition data and is supplied to analog sensor by host computer.
Further, voltage D/A converting circuit based on the output signal of controller carry out analog-to-digital conversion or digital-to-analogue conversion or
PWM processing output d. c. voltage signal.
Further, the d. c. voltage signal includes the analog DC voltage of 0-3.3V or the digital direct galvanic electricity of 0/3.3V
Pressure.
Further, the analog DC of current D-A conversion circuit output 0-20mA or 4-20mA or 0-24mA.
Further, another SPI interface of controller connects LoRa chip, and controller connects LoRa by LoRa chip
Gateway.
Specifically, the present invention, which provides analog sensor, is divided to two versions: general-purpose version, LoRa edition, two versions are to upper layer
The mode of equipment communication is slightly distinguished.
General-purpose version does not include LoRa chip and only supports output AO/DO signal, and AO signal includes 4-20mA DC current, 0-
3.3V voltage, DO signal are 0 or 3.3V voltage；
LoRa editions while supporting AO/DO signal, also support with LoRa gateway communication, use privately owned LoRa agreement with
Corresponding LoRa gateway or things-internet gateway connection.
Further, the integrated bus interface of controller connects display screen,
Further, the current D-A conversion circuit uses AD5410 chip, and controller is using model STM32L151C8's
Single-chip microcontroller, WiFi communication circuit use ESP-12F chip, and RS485 communication interface uses MAX3485 chip, display screen OLED
Display screen, voltage stabilizing chip select LM2576-3.3 chip.
Further, as shown in Fig. 2, the invention discloses a kind of control method of the analog sensor equipment of multiplex roles,
Itself the following steps are included:
Step 1, analog sensor device power initializes；
Step 2, controller judges whether to receive the dummy acquisition data sent from host computer；
When receiving dummy acquisition data, step 3 is executed；Otherwise, step 4 is executed；
Step 3, judge whether to need to enable LoRa mode:
When not needing to enable LoRa mode, controller exports the DC current of analog quantity simultaneously by current D-A conversion circuit
The DC current size of analog quantity is shown on a display screen, and executes step 2；
When needing to enable LoRa mode, controller shows current virtual acquisition data simultaneously by dummy acquisition number on a display screen
According to caching to buffer area, and execute step 4；
Step 4, controller judges whether to receive the poll instruction of LoRa gateway；
When the poll for receiving LoRa gateway instructs, the dummy acquisition data of buffer area are sent to LoRa gateway, and execute step
Rapid 2；
When the poll for not receiving LoRa gateway instructs, 2 are thened follow the steps.
Further, it as shown in figure 3, the invention discloses a kind of Internet of Things experience system, is connect using described one kind
Mouthful analog sensor equipment it is characterized by: experience system include Internet of Things cloud platform, things-internet gateway, LoRa gateway,
Serial server and monitoring camera；Things-internet gateway, LoRa gateway, serial server and monitoring camera access same local
Net, the LAN connection have client computer, server and work station, which is connected by public network and the communication of Internet of Things cloud platform
It connects,
The input terminal connection of analog sensor provides the host computer of dummy acquisition data, and analog sensor is connected by LoRa node
LoRa gateway, the voltage D/A converting circuit or current D-A conversion circuit output end of analog sensor are connected with internet of things data
Collector, actual sensor are set in true environment and obtain true acquisition data, and the output end of actual sensor connects Internet of Things
Network data collector, internet of things data collection are separately connected serial server and things-internet gateway, the output of actual sensor
End also passes sequentially through ZigBee node and connects serial server with ZigBee coordinator, and serial server is connected with serial equipment.
Analog sensor of the invention obtains perception data from the virtual scene NE of host computer, and (perception data is certainly
There is simulation software to export dummy acquisition data)
Further, a host computer is separately connected more than two analog sensors, and each analog sensor all has uniquely
Identity address, host computer identity-based mark address be respectively different analog sensor provide it is different types of virtual
Acquire data.
Further, actual sensor is the biography that temperature sensor or humidity sensor etc. are easily configured in solid sequence
Sensor equipment, and analog sensor is then used to substitute the sensor device that can not be configured in solid sequence, including selling at exorbitant prices,
Such as high precision laser displacement sensor；The environment for not acquiring data, such as saccharomycete concentration sensor；There is danger in use process
Danger, such as flame sensor；Volume is excessive, such as light curtain door.
Specifically, each analog sensor possesses an identity address, and user can be in the virtual scene of host computer
It is middle that arbitrarily simulate sensor address is appointed as xxx sensor, it is then bound with some data source, is equivalent to and senses xxx
Device has been placed in the virtual environment of Internet of Things experience system.(such as: the equipment of address 01 being appointed as Temperature Humidity Sensor, is bound
Onto 1 number source).
Analog sensor and actual sensor of the invention are applied in Practical training equipment by above-mentioned experience system simultaneously, are first led to
The collection process that the Internet of Things collection process of simple actual sensor allows student tentatively to understand sensor is crossed, and then is passed again with simulating
Sensor simulates the Internet of Things collection process of various types of sensors, so as to do not need to configure a large amount of different types it is true
Allow the more vivid collection process for more objectively perceiving various different sensors of student on the case where sensor.
The invention adopts the above technical scheme, and analog sensor of the invention obtains in the simulation application scene of host computer
Data, and then access true sensor data acquisition equipment in a manner of similar ordinary sensors and upload the data of acquisition.
The present invention is not pure software simulation, but independent hardware is more like an actual sensor.The present invention is according to host computer mould
The difference of quasi- application scenarios obtains different dummy acquisition data, and then simulates different types of sensor and export corresponding data extremely
True sensor data acquisition equipment realizes the true collection process of a virtual-sensor experience dissimilar sensor.
The virtual data that analog sensor of the invention can be provided according to host computer simulates a plurality of types of sensors, and students experience is true
Teaching efficiency is more preferable.
Claims (10)
1. a kind of analog sensor equipment of multiplex roles, it is characterised in that: it includes controller, the energization pins connection of controller
There is voltage stabilizing chip, the input terminal of voltage stabilizing chip accesses 12-24V DC power supply, and voltage stabilizing chip exports 3.3V DC voltage to control
The energization pins of device, a SPI interface of controller are connected with current D-A conversion circuit, the connection of current D-A conversion circuit
12-24V DC power supply simultaneously exports analog quantity DC current, and two USART interfaces of controller are connected separately with WiFi communication electricity
Road and RS485 telecommunication circuit, a general I/O interface of controller are connected with voltage D/A converting circuit, voltage digital-to-analogue conversion electricity
Road exports digital quantity DC voltage or analog quantity DC voltage；
Controller is communicated to connect by WiFi communication circuit and RS485 telecommunication circuit and host computer, and the optional output of host computer is different
The dummy acquisition data of type sensor, controller connect sensor number with D/A converting circuit by current D-A conversion circuit
According to acquisition equipment.
2. a kind of analog sensor equipment of multiplex roles according to claim 1, it is characterised in that: voltage digital-to-analogue conversion electricity
Roadbed carries out analog-to-digital conversion or digital-to-analogue conversion or PWM processing output d. c. voltage signal in the output signal of controller.
3. a kind of analog sensor equipment of multiplex roles according to claim 2, it is characterised in that: the DC voltage letter
Number including 0-3.3V analog DC voltage or 0/3.3V digital DC voltage.
4. a kind of analog sensor equipment of multiplex roles according to claim 1, it is characterised in that: current D-A conversion electricity
The analog DC of road output 0-20mA or 4-20mA or 0-24mA.
5. a kind of analog sensor equipment of multiplex roles according to claim 1, it is characterised in that: controller another
SPI interface connects LoRa chip, and controller connects LoRa gateway by LoRa chip.
6. a kind of analog sensor equipment of multiplex roles according to claim 5, it is characterised in that: controller it is integrated total
Line interface connects display screen.
7. a kind of analog sensor equipment of multiplex roles according to claim 6, it is characterised in that: the current D-A turns
Circuit is changed using AD5410 chip, controller uses the single-chip microcontroller of model STM32L151C8, and WiFi communication circuit uses ESP-
12F chip, RS485 communication interface use MAX3485 chip, and display screen is OLED display screen, and voltage stabilizing chip selects LM2576-
3.3 chip.
8. a kind of control method of the analog sensor equipment using a kind of multiplex roles described in claim 6 or 7, feature exist
In: itself the following steps are included:
Step 1, analog sensor device power initializes；
Step 2, controller judges whether to receive the dummy acquisition data sent from host computer；
When receiving dummy acquisition data, step 3 is executed；Otherwise, step 4 is executed；
Step 3, judge whether to need to enable LoRa mode:
When not needing to enable LoRa mode, controller exports the DC current of analog quantity simultaneously by current D-A conversion circuit
The DC current size of analog quantity is shown on a display screen, and executes step 2；
When needing to enable LoRa mode, controller shows current virtual acquisition data simultaneously by dummy acquisition number on a display screen
According to caching to buffer area, and execute step 4；
Step 4, controller judges whether to receive the poll instruction of LoRa gateway；
When the poll for receiving LoRa gateway instructs, the dummy acquisition data of buffer area are sent to LoRa gateway, and execute step
Rapid 2；
When the poll for not receiving LoRa gateway instructs, 2 are thened follow the steps.
9. a kind of using a kind of Internet of Things real training system of the analog sensor equipment of multiplex roles as claimed in claim 1 to 7
System, it is characterised in that: experience system includes that Internet of Things cloud platform, things-internet gateway, LoRa gateway, serial server and monitoring are taken the photograph
As head；Things-internet gateway, LoRa gateway, serial server and monitoring camera access same local area network, which has
Client computer, server and work station, the local area network pass through public network and Internet of Things cloud platform communication connection,
The input terminal connection of analog sensor provides the host computer of dummy acquisition data, and analog sensor is connected by LoRa node
LoRa gateway, the voltage D/A converting circuit or current D-A conversion circuit output end of analog sensor are connected with internet of things data
Collector, actual sensor are set in true environment and obtain true acquisition data, and the output end of actual sensor connects Internet of Things
Network data collector, internet of things data collection are separately connected serial server and things-internet gateway, the output of actual sensor
End passes sequentially through ZigBee node and connects serial server with ZigBee coordinator, and serial server is connected with serial equipment.
10. a kind of analog sensor equipment of multiplex roles according to claim 9, it is characterised in that: a host computer point
More than two analog sensors are not connected, and each analog sensor all has unique identity address, and host computer is based on
Identity address is respectively that different analog sensors provides different types of dummy acquisition data.
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| CN201910361383.8A CN110008763B (en) | 2019-04-30 | 2019-04-30 | Multi-interface analog sensor equipment and application thereof |
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