CN110736506A - Remote environment monitoring system and method - Google Patents
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- CN110736506A CN110736506A CN201911036905.3A CN201911036905A CN110736506A CN 110736506 A CN110736506 A CN 110736506A CN 201911036905 A CN201911036905 A CN 201911036905A CN 110736506 A CN110736506 A CN 110736506A
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Abstract
The invention relates to remote environment monitoring systems and methods, wherein the remote environment monitoring system comprises an analog quantity acquisition sensor, a digital quantity acquisition sensor, an embedded system, a power supply module and a virtual instrument, the embedded system is connected with the digital quantity acquisition sensor through a relay, the embedded system is directly connected with the analog quantity acquisition sensor, the analog quantity acquisition sensor and the digital quantity sensor are both connected with the power supply module through power supply relays, the power supply relays are connected with the embedded system, the virtual instrument is connected with the embedded system, and the virtual instrument is provided with formula nodes and a storage module.
Description
Technical Field
The invention belongs to the technical field of remote monitoring, relates to a remote environment monitoring technology, and particularly relates to remote environment monitoring systems and methods.
Background
At present, a plurality of low-temperature tests in the scientific research process are required to be carried out in an outdoor actual environment, the low-temperature requirement is-30 ℃ and even the lowest temperature is-35 ℃, and due to the limitation of the low-temperature test requirement, when the low-temperature test is carried out, a worker cannot collect variable parameters required by environment monitoring on the spot, and the traditional artificial environment monitoring means cannot be suitable for the requirement of the low-temperature test.
Disclosure of Invention
Aiming at the problems of poor stability, high maintenance cost and the like of remote environment monitoring in the conventional low-temperature environment test, the invention provides remote environment monitoring systems and methods with good stability and low maintenance cost, and can realize remote monitoring of environment variables under the low-temperature condition.
To achieve the above object, the present invention provides remote environment monitoring system, comprising:
the analog quantity acquisition sensor is used for acquiring analog quantity variable parameters required by environment monitoring;
the digital quantity acquisition sensor is used for acquiring digital quantity variable parameters required by environment monitoring;
the embedded system is connected with the digital quantity acquisition sensor through a relay and receives external environment digital quantity variable parameters transmitted by the digital quantity acquisition sensor; the embedded system is directly connected with the analog quantity acquisition sensor and receives the external environment analog quantity parameters transmitted by the analog quantity acquisition sensor;
the power supply module is used for supplying power to the remote environment monitoring system, the analog quantity acquisition sensor and the digital quantity sensor are connected with the power supply module through a power supply relay, and the power supply relay is connected with the embedded system;
the virtual instrument is connected with the embedded system, receives the external environment digital variable parameters and the external environment analog variable parameters sent by the embedded system, and simultaneously sends instructions to the embedded system for controlling the working state of the power supply relay;
the virtual instrument is provided with a formula node, the formula node is used for calculating and analyzing external environment analog variable parameters, and the acquired feedback voltage value is matched with the actual environment parameters for calculation;
the virtual instrument is also provided with a storage module for storing monitoring data in real time.
And , a display unit connected to the embedded system for displaying the local current test value and status information.
Preferably, the analog quantity acquisition sensor comprises a temperature sensor, a humidity sensor, a light intensity sensor and a noise sensor which are respectively and directly connected with the embedded system; the digital quantity acquisition sensor comprises a smoke detector, the smoke detector is connected with a relay, a state feedback contact of the relay is connected with the embedded system, and the Boolean state of the external environment is transmitted to the embedded system in a relay state feedback mode.
Preferably, each sensor is connected to a power module by a separate power relay.
, the embedded system is provided with a wireless serial port module, and the wireless serial port module communicates with the wireless serial port module arranged in the virtual instrument.
Preferably, the virtual instrument configures the wireless serial port module by using a VISA function.
, the virtual instrument further comprises a fault diagnosis module for automatically diagnosing faults of the remote environment monitoring system, if the system has faults, the virtual instrument sends manual instructions or fault instructions to the embedded system, the embedded system outputs the manual instructions or fault instructions to the power relay to control the power relay to act, and the analog quantity acquisition sensor and the digital quantity acquisition sensor are powered off through the power relay.
Preferably, the storage module uses a TDMS function of a virtual instrument LabVIEW to complete automatic real-time storage of the monitoring data.
In order to achieve the above object, the present invention further provides remote environmental monitoring methods, which use a remote environmental monitoring system, comprising the steps of:
the virtual instrument judges whether the remote environment monitoring system has a fault or not; if the fault exists, the virtual instrument outputs an instruction to control the action of a power supply relay, the analog quantity acquisition sensor and the digital quantity acquisition sensor are powered off, and the remote environment monitoring is finished; if no fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the power supply module supplies power to the analog quantity acquisition sensor and the digital quantity acquisition sensor through the power supply relay;
the analog quantity acquisition sensor acquires analog quantity variable parameters required by environment monitoring, and the digital quantity acquisition sensor acquires digital quantity variable parameters required by the environment monitoring;
the acquired analog variable parameters and digital variable parameters are transmitted to the embedded system;
the virtual instrument judges whether the remote environment monitoring system has a fault or not; if the fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the remote environment monitoring is finished; if no fault exists, the virtual instrument receives the analog variable parameter and the digital variable parameter forwarded by the embedded system, calculates and analyzes the analog variable parameter, and matches the acquired and fed back voltage value with the actual environment parameter; meanwhile, the virtual instrument automatically stores the received analog quantity variable parameters and digital quantity variable parameters to the storage module in real time.
And , the virtual instrument outputs an instruction to the embedded system, the instruction is transmitted to the display unit by the embedded system, and the display unit is controlled to display the analog quantity variable parameters and the digital quantity variable parameters.
Compared with the prior art, the invention has the advantages and positive effects that:
(1) the monitoring system realizes the remote detection of the environmental variables, can automatically collect and store the environmental variables in real time, adopts the modular design, divides all the environmental monitoring parameters into analog quantity and digital quantity to be collected respectively, realizes the definition of each sensor channel of the embedded system, has clear and definite program architecture, is convenient to change or add each sensor channel, greatly increases the expandability and applicability of the system, improves the stability of the system and reduces the later maintenance cost.
(2) The monitoring system only acquires the environmental parameters of each sensor in the embedded system, does not calculate the analog quantity value in the embedded system, reduces the occupation of the embedded system, simplifies the system application at the acquisition end, and reduces the fault risk, meanwhile, the analog quantity value is calculated by using the formula node in the virtual instrument, the analog quantity value conversion of each sensor is simplified, the formula is convenient to compile and change, the later-stage software maintenance work is greatly facilitated, the centralized management of the formula node is clearer and simpler, each sensor can be respectively managed, and the later-stage maintenance cost is reduced.
(3) According to the monitoring system, each sensor is connected with a power supply through an independent power supply relay, the action of the power supply relay is given by a virtual instrument, detection parameters can be manually and independently selected for collection, and meanwhile, when the system breaks down, the power supply relay is used for powering off the sensors, so that the safety is guaranteed.
(4) The monitoring system is provided with the display unit, can be used for displaying simple information, can be viewed at a far end and can also be viewed at a near end, and the applicability of the system is improved.
(5) The monitoring system of the invention uses the virtual instrument to develop, and the processes of analog quantity and the like needing to be calculated are put into the virtual instrument to be summarized and completed, thereby reducing the complexity of the acquisition end system and reducing the fault risk; meanwhile, a virtual instrument is used for human-computer interaction development, and the system maintenance cost is greatly reduced by adopting a modular design.
(6) The monitoring method adopts a remote environment monitoring system, realizes remote monitoring and automatic real-time acquisition and storage of environment variables, and has low maintenance cost and strong applicability.
Drawings
FIG. 1 is a block diagram of a remote environmental monitoring system according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating a communication configuration of a virtual machine according to an embodiment of the present invention;
FIG. 3 is a diagram of a communication architecture of a virtual machine according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating an analog quantity calculation of a virtual instrument for monitoring a temperature sensor using a formula node according to an embodiment of the present invention;
fig. 5 is a control flow chart of a remote environment monitoring method according to an embodiment of the present invention.
Detailed Description
The present invention is now described in detail with reference to the exemplary embodiments thereof, however, it should be understood that the elements, structures and features of the embodiments may be beneficially incorporated in other embodiments without further recitation of .
Referring to fig. 1, an embodiment of the provides remote environmental monitoring systems, including:
the analog quantity acquisition sensor is used for acquiring analog quantity variable parameters required by environment monitoring;
the digital quantity acquisition sensor is used for acquiring digital quantity variable parameters required by environment monitoring;
the embedded system is connected with the digital quantity acquisition sensor through a relay and receives external environment digital quantity variable parameters transmitted by the digital quantity acquisition sensor; the embedded system is directly connected with the analog quantity acquisition sensor and receives the external environment analog quantity parameters transmitted by the analog quantity acquisition sensor;
the power supply module is used for supplying power to the remote environment monitoring system, the analog quantity acquisition sensor and the digital quantity sensor are connected with the power supply module through a power supply relay, and the power supply relay is connected with the embedded system;
the virtual instrument is connected with the embedded system, receives the external environment digital variable parameters and the external environment analog variable parameters sent by the embedded system, and simultaneously sends instructions to the embedded system for controlling the working state of the power supply relay;
the virtual instrument is provided with a formula node, the formula node is used for calculating and analyzing external environment analog variable parameters, and the acquired feedback voltage value is matched with the actual environment parameters for calculation;
the virtual instrument is also provided with a storage module for storing monitoring data in real time.
Specifically, the storage module uses a TDMS function of a virtual instrument LabVIEW to complete automatic real-time storage of monitoring data. The TDMS function of the virtual instrument LabVIEW is adopted to complete data storage, the development process is greatly simplified, and meanwhile, based on the TDMS function, the TDMS function has the following advantages: the TDMS function occupies a small volume; the TDMS function is a binary file, and the reading and writing speed is high; the TDMS function format can simultaneously store a main file and an index file, support random file reading and use indexes, and has high search loading speed. Because the TDMS function has the advantages, the virtual instrument storage module adopts the TDMS function, and by adopting the design, the cost of the monitoring system can be reduced, and meanwhile, the monitoring system is maintained in a later period.
With continued reference to fig. 1, the analog acquisition sensor includes a temperature sensor, a humidity sensor, a light intensity sensor and a noise sensor, which are respectively and directly connected to the embedded system; the digital quantity acquisition sensor comprises a smoke detector, the smoke detector is connected with a relay, a state feedback contact of the relay is connected with the embedded system, and the Boolean state of the external environment is transmitted to the embedded system in a relay state feedback mode. Wherein, temperature sensor monitors ambient temperature, and humidity transducer monitors ambient humidity, and light intensity sensor monitors ambient illuminance, and noise transducer monitors ambient noise, and whether smoke detector takes place the conflagration to the environment and monitors.
The intelligent monitoring system comprises a power module, a power supply relay, a virtual instrument, a power supply relay and a power supply relay, wherein the power supply relay is connected with the power supply module, the power supply relay acts by the virtual instrument, and the judgment condition comprises a manual instruction and a fault instruction.
With continued reference to fig. 1, the embedded system is provided with a wireless serial port module, and the wireless serial port module communicates with a wireless serial port module arranged in the virtual instrument. The embedded system transmits the acquired environmental parameter values to the virtual instrument through the wireless serial port module. When the embedded system transmits the acquired environmental parameter values, the embedded system also reads the instruction sent by the virtual instrument from the wireless serial port module.
Specifically, the virtual instrument configures the wireless serial port module by using a VISA function. The communication is configured into a serial port by adopting a virtual instrument, namely, wireless serial port communication is realized, so that the system has excellent expandability. The communication configuration and the communication architecture are shown in fig. 2 and 3, respectively. The monitoring system of the invention adopts a virtual instrument for development, thereby greatly simplifying the workload of code development.
With continued reference to fig. 1, the virtual instrument further includes a fault diagnosis module, configured to perform automatic fault diagnosis on the remote environment monitoring system, and if the system fails, the virtual instrument sends a manual instruction or a fault instruction to the embedded system, and the embedded system outputs the manual instruction or the fault instruction to the power relay, so as to control the power relay to operate, and the analog quantity acquisition sensor and the digital quantity acquisition sensor are powered off through the power relay.
Specifically, the virtual instrument uses formula nodes to calculate the analog quantity parameters. For example: when the temperature is monitored, LM35 is used as a temperature sensor, the output voltage of the temperature sensor is in a linear proportional relation with the temperature in centigrade, and formula nodes are used for analog calculation, and the figure 4 is shown. The formula nodes are used, the analog quantity value conversion of each sensor is simplified, the formula is compiled and changed, and the later-stage software maintenance work is greatly facilitated.
With continued reference to FIG. 1, in a preferred embodiment, the remote environmental monitoring system further comprises a display unit connected to the embedded system for displaying the local current test value and status information, specifically, the display unit is a screen for displaying simple information, such as the current system operating status, or uploading the currently monitored parameters to the screen for display.
The remote monitoring system adopts a modular design, is convenient to expand, divides all environment monitoring parameters into digital quantity and analog quantity to be respectively collected, the embedded system respectively defines each sensor channel to conveniently change or add each sensor channel, all the calculation is carried out in the virtual instrument, the embedded system only collects the environment parameters and directly forwards the environment parameters to the virtual instrument, the formula nodes are used in the virtual instrument to calculate and output the analog quantity value, the occupation of the embedded system is reduced, the system application is simplified at the collection end, the fault risk is reduced, and simultaneously, each type sensor is respectively managed, and the later maintenance cost is reduced.
Referring to fig. 5, another embodiment of the present invention provides remote environmental monitoring methods, where before monitoring, the remote environmental monitoring system is powered on and initialized.
The method comprises the following specific steps:
s1, the virtual instrument judges whether the remote environment monitoring system has a fault; if the fault exists, the virtual instrument outputs an instruction to control the action of a power supply relay, the analog quantity acquisition sensor and the digital quantity acquisition sensor are powered off, and the remote environment monitoring is finished; if no fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the power supply module supplies power to the analog quantity acquisition sensor and the digital quantity acquisition sensor through the power supply relay;
s2, acquiring analog variable parameters required by environment monitoring by an analog acquisition sensor, and acquiring digital variable parameters required by the environment monitoring by a digital acquisition sensor;
s3, transmitting the acquired analog variable parameters and digital variable parameters to the embedded system;
s4, the virtual instrument judges whether the remote environment monitoring system has a fault; if the fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the remote environment monitoring is finished; if no fault exists, the virtual instrument receives the analog variable parameter and the digital variable parameter forwarded by the embedded system, calculates and analyzes the analog variable parameter, and matches the acquired and fed back voltage value with the actual environment parameter; meanwhile, the virtual instrument automatically stores the received analog quantity variable parameters and digital quantity variable parameters to the storage module in real time.
Specifically, in step S1, if there is a fault, the virtual instrument sends an artificial instruction or a fault instruction to the embedded system, the embedded system outputs an instruction to the power relay to control the power relay to operate, and the power relay powers off the analog quantity acquisition sensor and the digital quantity acquisition sensor to stop remote environmental monitoring; if no fault exists, the virtual instrument gives a working instruction, the embedded system outputs the instruction to the power supply relay to control the action of the power supply relay, and the power supply module supplies power to the analog quantity acquisition sensor and the digital quantity acquisition sensor through the power supply relay to start remote environment monitoring.
The monitoring method of the embodiment of the invention adopts the remote environment monitoring system, realizes the remote monitoring, automatic real-time acquisition and storage of the environment variable, realizes the automatic detection of the fault, and has high system stability and low maintenance cost.
The embodiment of the invention also provides provides remote environment monitoring methods, which are characterized in that before the remote environment monitoring system is adopted to monitor, the remote environment monitoring system is firstly powered on and initialized, and the method specifically comprises the following steps:
s1, the virtual instrument judges whether the remote environment monitoring system has a fault; if the fault exists, the virtual instrument outputs an instruction to control the action of a power supply relay, the analog quantity acquisition sensor and the digital quantity acquisition sensor are powered off, and the remote environment monitoring is finished; if no fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the power supply module supplies power to the analog quantity acquisition sensor and the digital quantity acquisition sensor through the power supply relay;
s2, acquiring analog variable parameters required by environment monitoring by an analog acquisition sensor, and acquiring digital variable parameters required by the environment monitoring by a digital acquisition sensor;
s3, transmitting the acquired analog variable parameters and digital variable parameters to the embedded system, and transmitting the parameters to the display unit by the embedded system;
s4, the virtual instrument judges whether the remote environment monitoring system has a fault; if the fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the remote environment monitoring is finished; if no fault exists, the virtual instrument receives the analog variable parameter and the digital variable parameter forwarded by the embedded system, calculates and analyzes the analog variable parameter, and matches the acquired and fed back voltage value with the actual environment parameter; meanwhile, the virtual instrument automatically stores the received analog quantity variable parameters and digital quantity variable parameters to the storage module in real time.
And S5, the virtual instrument outputs instructions to the embedded system, the instructions are forwarded to the display unit by the embedded system, and the display unit is controlled to display the analog quantity variable parameters and the digital quantity variable parameters.
Specifically, in step S1, if there is a fault, the virtual instrument sends an artificial instruction or a fault instruction to the embedded system, the embedded system outputs an instruction to the power relay to control the power relay to operate, and the power relay powers off the analog quantity acquisition sensor and the digital quantity acquisition sensor to stop remote environmental monitoring; if no fault exists, the virtual instrument gives a working instruction, the embedded system outputs the instruction to the power supply relay to control the action of the power supply relay, and the power supply module supplies power to the analog quantity acquisition sensor and the digital quantity acquisition sensor through the power supply relay to start remote environment monitoring.
According to the monitoring method, the remote environment monitoring system is adopted, remote monitoring, automatic real-time acquisition and storage of the environment variables are achieved, automatic detection of faults is achieved, the system stability is high, the maintenance cost is low, parameters are displayed, the monitoring method can be observed at a far end and a near end, and the applicability is improved.
The above-described embodiments are intended to illustrate rather than to limit the invention, and any modifications and variations of the present invention are possible within the spirit and scope of the claims.
Claims (10)
- A remote environmental monitoring system of the type , comprising:the analog quantity acquisition sensor is used for acquiring analog quantity variable parameters required by environment monitoring;the digital quantity acquisition sensor is used for acquiring digital quantity variable parameters required by environment monitoring;the embedded system is connected with the digital quantity acquisition sensor through a relay and receives external environment digital quantity variable parameters transmitted by the digital quantity acquisition sensor; the embedded system is directly connected with the analog quantity acquisition sensor and receives the external environment analog quantity parameters transmitted by the analog quantity acquisition sensor;the power supply module is used for supplying power to the remote environment monitoring system, the analog quantity acquisition sensor and the digital quantity sensor are connected with the power supply module through a power supply relay, and the power supply relay is connected with the embedded system;the virtual instrument is connected with the embedded system, receives the external environment digital variable parameters and the external environment analog variable parameters sent by the embedded system, and simultaneously sends instructions to the embedded system for controlling the working state of the power supply relay;the virtual instrument is provided with a formula node, the formula node is used for calculating and analyzing external environment analog variable parameters, and the acquired feedback voltage value is matched with the actual environment parameters for calculation;the virtual instrument is also provided with a storage module for storing monitoring data in real time.
- 2. The remote environmental monitoring system of claim 1, further comprising a display unit coupled to the embedded system for displaying local current test values and status information.
- 3. The remote environmental monitoring system of claim 1 or 2, wherein the analog quantity collecting sensor includes a temperature sensor, a humidity sensor, a light intensity sensor and a noise sensor, which are directly connected to the embedded system, respectively; the digital quantity acquisition sensor comprises a smoke detector, the smoke detector is connected with a relay, a state feedback contact of the relay is connected with the embedded system, and the Boolean state of the external environment is transmitted to the embedded system in a relay state feedback mode.
- 4. The remote environmental monitoring system of claim 3, wherein each sensor is connected to the power module by a separate power relay.
- 5. The remote environmental monitoring system according to claim 1 or 2, wherein the embedded system is provided with a wireless serial module, and the wireless serial module communicates with a wireless serial module provided in the virtual instrument.
- 6. The remote environmental monitoring system of claim 6, wherein the virtual instrument configures the wireless serial port module using a VISA function.
- 7. The remote environmental monitoring system according to claim 1 or 2, wherein the virtual instrument further comprises a fault diagnosis module for performing automatic fault diagnosis on the remote environmental monitoring system, and if the system fails, the virtual instrument sends a manual command or a fault command to the embedded system, and the embedded system outputs the manual command or the fault command to the power relay to control the power relay to operate, so as to power off the analog quantity acquisition sensor and the digital quantity acquisition sensor through the power relay.
- 8. The remote environmental monitoring system of claim 7, wherein the storage module performs automatic real-time storage of monitoring data using a TDMS function of a virtual instrument LabVIEW.
- 9, remote environmental monitoring method, characterized by that, adopt the remote environmental monitoring system, its concrete step is:the virtual instrument judges whether the remote environment monitoring system has a fault or not; if the fault exists, the virtual instrument outputs an instruction to control the action of a power supply relay, the analog quantity acquisition sensor and the digital quantity acquisition sensor are powered off, and the remote environment monitoring is finished; if no fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the power supply module supplies power to the analog quantity acquisition sensor and the digital quantity acquisition sensor through the power supply relay;the analog quantity acquisition sensor acquires analog quantity variable parameters required by environment monitoring, and the digital quantity acquisition sensor acquires digital quantity variable parameters required by the environment monitoring;the acquired analog variable parameters and digital variable parameters are transmitted to the embedded system;the virtual instrument judges whether the remote environment monitoring system has a fault or not; if the fault exists, the virtual instrument outputs an instruction to control the action of the power supply relay, and the remote environment monitoring is finished; if no fault exists, the virtual instrument receives the analog variable parameter and the digital variable parameter forwarded by the embedded system, calculates and analyzes the analog variable parameter, and matches the acquired and fed back voltage value with the actual environment parameter; meanwhile, the virtual instrument automatically stores the received analog quantity variable parameters and digital quantity variable parameters to the storage module in real time.
- 10. The remote environmental monitoring method of claim 9, wherein the virtual instrument outputs a command to the embedded system, which is forwarded by the embedded system to the display unit, thereby controlling the display unit to display the analog quantity variable parameter and the digital quantity variable parameter.
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