CN217637651U - Multipoint noise online monitoring system for production workshop - Google Patents
Multipoint noise online monitoring system for production workshop Download PDFInfo
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- CN217637651U CN217637651U CN202120969818.XU CN202120969818U CN217637651U CN 217637651 U CN217637651 U CN 217637651U CN 202120969818 U CN202120969818 U CN 202120969818U CN 217637651 U CN217637651 U CN 217637651U
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a multiple spot noise on-line monitoring system for workshop belongs to occupational disease harm detection technology field, including noise monitoring node, assemble node, transmission bus and surveillance center, noise monitoring node gathers the noise information of position in real time to transmit noise information for through wireless data transmission's form assemble the node, it passes through to assemble the node transmission bus arrives noise information is uploaded to surveillance center. The utility model discloses a data transmission mode "wireless + wired" has both guaranteed the short distance data transmission suitability, makes remote data transmission's stability secure again.
Description
Technical Field
The utility model belongs to the technical field of occupational disease harm detects, specifically be a multiple spot noise on-line monitoring system for workshop.
Background
Occupational disease and hazard detection is an important means for detecting the concentration and the strength of toxic and harmful substances in a workplace, and currently, the daily monitoring of occupational hazards of human units in China usually needs manual work and electronic equipment to cooperate together to complete data acquisition. Although the system has certain advantages in the aspects of continuity and mobility detection, the occupational hazards of key workplaces and key posts cannot be monitored in real time, and the hazard degree of the workplaces cannot be effectively ensured in real time.
The conventional occupational disease hazard factor daily monitoring frequency is not high, the collected monitoring data volume is less, and the sample data has certain discreteness. After occupational health workers arrive at a site for sampling, corresponding results and evaluation are given after data are manually calculated and processed, and an effective occupational hazard monitoring information management system is not established. In processing these data there are: (1) data comes from multiple people and has no uniform inlet and outlet calibers; (2) data mostly depends on manual input, the speed is low, and the data is incorrect and not standard; (3) the data storage means mainly binds the report forms or files into a book for storage, so that data retrieval and search are inconvenient and the safety is not high; (4) the data sharing degree is low, the information resource utilization is insufficient, although some computers are configured higher, the information processing cannot be efficient and accurate because the computers are in single-machine operation and the information exchange mode is mainly telephone, report or oral; (5) each department of business personnel and management personnel are greatly interested in affairs and repetitive work, such as tedious affairs of data collection, arrangement, classification, calculation, tabulation and the like, and the labor intensity is high, so that the department of business personnel and the management personnel are not keen on developing creative management work and hindering the improvement of the management level; (6) the information analysis means is backward, the data processing and analysis capability is limited, and the development trend is difficult to predict by using the current and historical data or the basis is provided for the qualitative and quantitative decision of major problems.
With the continuous development of computer technology, wireless sensor network technology and embedded technology, people have increasingly greater requirements on real-time data acquisition, monitoring intellectualization, networking, data display and analysis diversification.
Disclosure of Invention
For solving the defect that prior art exists, the utility model aims at providing a multiple spot noise on-line monitoring system for workshop, this system is applicable to the on-the-spot adverse conditions of workshop in to environmental noise's real-time supervision, have easy and simple to handle, measure accurate, the result is directly perceived, small, advantage such as low power dissipation.
In order to achieve the above purpose, the utility model adopts a technical scheme that:
the utility model provides a multiple spot noise on-line monitoring system for workshop, includes noise monitoring node, convergent node, transmission bus and surveillance center, noise monitoring node is used for the noise information of real-time collection position to transmit noise information for convergent node through wireless data transmission's form, convergent node passes through transmission bus uploads noise information to surveillance center.
Further, as mentioned above, in the multipoint noise online monitoring system for production workshops, a plurality of noise monitoring nodes and one sink node are arranged in each production workshop.
Further, as mentioned above, in the system for online monitoring of multipoint noise in a production workshop, a plurality of noise monitoring nodes in each production workshop perform data communication with the aggregation node in the workshop in a form of wireless data transmission.
Further, according to the multipoint noise online monitoring system for the production workshop, the transmission bus is in a wired transmission form, the transmission distance is not less than 1km, and the wired transmission form comprises a CAN bus.
Further, as mentioned above, the noise monitoring node includes a noise sensor, a first microprocessor, a first wireless data transmission module, a first liquid crystal display module, and a first system power module.
Further, according to the multipoint noise online monitoring system for the production workshop, the noise sensor converts the input noise signal into the output voltage signal, the range of the input noise signal is 30-130 dB, and the range of the output voltage signal is 0- +2.5V.
Further, as described above, in the multipoint noise online monitoring system for a production workshop, the first microprocessor converts the voltage signal output by the noise sensor into a digital signal through the in-chip ADC, converts the digital signal into an amplitude value of the voltage signal, and finally calculates a corresponding noise decibel value.
Further, as mentioned above, the sink node includes the second microprocessor, the wired data transmission module, the second wireless data transmission module, the second liquid crystal display module and the second system power module.
Further, as above, the system for online monitoring of multipoint noise in a production workshop, the first wireless data transmission module and the second wireless data transmission module are loRa wireless data transmission modules, the loRa wireless data transmission modules are provided with sink addresses in hardware, and are provided with node addresses in software, so that the one-to-one correspondence of data transmission between the sink nodes and the monitoring nodes is ensured.
Further, as mentioned above, the output power sources of the first system power module and the second system power module include +5V and +3.3V, respectively.
Compared with the prior art, the beneficial effects of the utility model are as follows:
the utility model adopts a wireless and wired data transmission mode in the structural design of the system, namely, a wireless data transmission mode is adopted between the noise monitoring node and the aggregation node in the production workshop, and a wired data transmission mode is adopted between the aggregation node and the monitoring center, thereby not only ensuring the applicability of short-distance data transmission, but also ensuring the stability of long-distance data transmission; in the aspect of system function design, a real-time acquisition mode of online multipoint online monitoring is adopted, and a monitoring range of 30-130 dB is realized based on a high-precision noise sensor.
Drawings
FIG. 1 is a block diagram of a system structure according to an embodiment of the present invention for an online monitoring system of multipoint noise in a production shop;
FIG. 2 is a system connection functional diagram of a noise monitoring node in the embodiment of FIG. 1;
FIG. 3 is a flow chart of a method for calculating a decibel value of noise at a noise monitor node according to the embodiment of FIG. 1;
FIG. 4 is a system connection function diagram of the sink node in the embodiment of FIG. 1;
wherein, 1-noise monitoring node; 2-sink node; 3-a transmission bus; 4-a monitoring center; 11-a noise sensor; 12-a first microprocessor; 13-a first wireless data transmission module; 14-a first liquid crystal display module; 15-a first system power module; 21-a second microprocessor; 22-wired data transmission module; 23-a second wireless data transmission module; 24-a second liquid crystal display module; 25-a second system power supply module.
Detailed Description
The invention is further described with reference to specific embodiments and drawings attached to the description.
Fig. 1 shows the utility model provides a system architecture block diagram for embodiment of workshop multiple spot noise on-line monitoring system, can find out by fig. 1, this system includes noise monitoring node 1, assemble node 2, transmission bus 3 and surveillance center 4, noise monitoring node 1 gathers the noise information of place position in real time, and transmit noise information for assembling node 2 through wireless data transmission's form, assemble node 2 and upload the noise information who passes through processing to the surveillance center 4 of mill through transmission bus 3.
The noise monitoring nodes 1 are arranged in each production workshop, collect noise information of positions where the noise monitoring nodes are located in real time, and transmit the noise information to the corresponding sink nodes 2 in a wireless data transmission mode. The number of the noise monitoring nodes 1 arranged in each production workshop is determined according to actual needs, in the embodiment, three noise monitoring nodes are arranged in each production workshop, and wireless data transmission among the noise monitoring nodes arranged in different production workshops is not interfered with each other.
The sink nodes 2 are distributed in each production workshop, and each production workshop is distributed with 1 sink node. The sink nodes 2 receive and process noise information from the three noise monitoring nodes 1, the processed noise information is uploaded to a factory monitoring center 4 through a transmission bus 3, and wireless data transmission among the sink nodes 2 arranged in different production workshops is not interfered with each other. The sink node 2 and the three noise monitoring nodes 1 in the workshop are in data communication in a wireless data transmission mode, the engineering problem of wired transmission in wiring is solved, and the applicability of the system is improved.
The transmission bus 3 adopts a wired transmission mode, the transmission distance is not less than 1km, and the aggregation node 2 and the monitoring center 4 adopt a wired transmission mode, so that the requirement of long-distance transmission can be met, and the transmission stability is higher.
The monitoring center 4 is configured with special monitoring software, receives noise information uploaded by each production workshop through the transmission bus 3, and carries out real-time processing and display through a computer system.
Fig. 2 shows a system connection functional diagram of the noise monitoring node in the embodiment of fig. 1, and as can be seen from fig. 2, the noise monitoring node 1 in this embodiment mainly includes a noise sensor 11, a first microprocessor 12, a first wireless data transmission module 13, a first liquid crystal display module 14 and a first system power supply module 15, wherein,
the noise sensor 11 converts the noise information collected in real time within the range of 30-130 dB into a voltage signal corresponding to the range of 0- +2.5V and outputs the voltage signal;
the first microprocessor 12 converts the voltage signal output by the noise sensor 11 into a digital signal through the on-chip ADC, converts the digital signal into an amplitude value of the voltage signal, and finally calculates a corresponding noise decibel value;
the first wireless data transmission module 13 sends the collected noise information to the sink node 2;
the first liquid crystal display module 14 displays the collected noise information;
the first system power module 15 outputs two sets of +5V and +3.3V power supplies to other modules.
Fig. 3 is a flowchart illustrating a method for calculating a decibel value of noise at a noise monitoring node in the embodiment of fig. 1, and as can be seen from fig. 3, the method for calculating a decibel value of noise by the first microprocessor 12 specifically includes the following steps:
s1, initializing internal ADC
Initializing the internal ADC specifically configures parameters of an ADC control register set in the microprocessor 12, and in this embodiment, configures a sampling rate of 115kHz, a reference voltage of 3.3V, and a conversion resolution of ten bits.
S2, starting AD conversion
The acquisition interval is set, in this embodiment to 0.5S.
S3, reading the AD conversion result and converting the AD conversion result into a voltage signal amplitude value
Reading the ten-digit digital quantity information D, and converting the ten-digit digital quantity information D into an amplitude value Vx of a corresponding voltage signal according to a 3.3V reference voltage, wherein the conversion formula is as follows;
Vx＝(D÷1023)×3.3 (1)
s4, calculating a noise decibel value
And calculating a corresponding noise decibel value Ns according to the amplitude value Vx of the electric signal, wherein the unit is dB, and the calculation formula is shown as follows.
Ns＝(Vx-1.0)×45+29.8 (2)
Fig. 4 shows a system connection function diagram of the sink node in the embodiment of fig. 1, and as shown in fig. 4, the sink node 2 mainly includes a second microprocessor 21, a wired data transmission module 22, a second wireless data transmission module 23, a second liquid crystal display module 24 and a second system power supply module 25, wherein,
the wired data transmission module 22 uploads the noise information collected in each production workshop to the monitoring center 4 in a CAN bus communication mode, and the transmission distance is more than 1km;
the second wireless data transmission module 23 performs data transmission with the noise monitoring nodes 1 arranged in each production workshop in a wireless data transmission mode. The wireless data transmission module is realized by adopting a Lora module, a convergent address is configured on the hardware design, and a node address is configured on the software compiling, so that the one-to-one correspondence of data transmission between the convergent node 2 and the monitoring node 1 is ensured;
the second system power module 25 outputs two sets of +5V and +3.3V power supplies to other modules.
The utility model provides a multiple spot noise on-line monitoring system for workshop, to the application requirement of present workshop occupational disease harm factor on-line monitoring, adopt technologies such as computer system, bus transmission, wireless network deployment and multiple spot collection, have characteristics easy and simple to handle, job stabilization; the device is set to be automatically and continuously monitored, manual operation is not needed, and the working efficiency is improved; the noise monitoring nodes and the sink nodes adopt a wireless transmission mode, so that the engineering problem of wired transmission in wiring is solved, and the applicability of the system is improved; the wired transmission mode is adopted between the sink node and the monitoring center, the requirement of long-distance transmission can be met, and the transmission stability is high.
The above-described embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or in other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be determined by the appended claims, and any changes that are equivalent to the intent and scope of the claims are intended to be embraced therein.
Claims (5)
1. A multipoint noise online monitoring system for a production workshop is characterized by comprising a plurality of noise monitoring nodes (1), a sink node (2), a transmission bus (3) and a monitoring center (4), wherein the noise monitoring nodes (1) are used for acquiring noise information of positions where the noise monitoring nodes are located in real time and transmitting the noise information to the sink node (2) in a wireless data transmission mode, and the sink node (2) uploads the noise information to the monitoring center (4) through the transmission bus (3);
the noise monitoring node (1) comprises a noise sensor (11), a first microprocessor (12), a first wireless data transmission module (13), a first liquid crystal display module (14) and a first system power supply module (15);
the sink node (2) comprises a second microprocessor (21), a wired data transmission module (22), a second wireless data transmission module (23), a second liquid crystal display module (24) and a second system power supply module (25);
the first wireless data transmission module (13) and the second wireless data transmission module (23) are LoRa wireless data transmission modules.
2. The multipoint on-line noise monitoring system for the production workshop as claimed in claim 1, wherein a plurality of the noise monitoring nodes (1) in each production workshop are in data communication with the aggregation node (2) in the workshop through wireless data transmission.
3. The multipoint on-line noise monitoring system for a production workshop according to claim 2, characterized in that the transmission bus (3) is in the form of wired transmission, the transmission distance is not less than 1km, and the form of wired transmission comprises a CAN bus.
4. The multipoint noise on-line monitoring system for the production workshop according to any one of claims 1-3, characterized in that the noise sensor (11) converts the input noise signal into an output voltage signal, the input noise signal range is 30-130 dB, and the output voltage signal range is 0- +2.5V.
5. The multipoint on-line noise monitoring system for a production plant according to claim 4, wherein the output power of the first system power module (15) and the second system power module (25) each comprise +5V and +3.3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120969818.XU CN217637651U (en) | 2021-05-08 | 2021-05-08 | Multipoint noise online monitoring system for production workshop |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120969818.XU CN217637651U (en) | 2021-05-08 | 2021-05-08 | Multipoint noise online monitoring system for production workshop |
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| CN217637651U true CN217637651U (en) | 2022-10-21 |
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| CN202120969818.XU Active CN217637651U (en) | 2021-05-08 | 2021-05-08 | Multipoint noise online monitoring system for production workshop |
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2021
- 2021-05-08 CN CN202120969818.XU patent/CN217637651U/en active Active
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