CN104238475A - Gas monitoring system based on Zigbee network - Google Patents

Gas monitoring system based on Zigbee network Download PDF

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Publication number
CN104238475A
CN104238475A CN201310242541.0A CN201310242541A CN104238475A CN 104238475 A CN104238475 A CN 104238475A CN 201310242541 A CN201310242541 A CN 201310242541A CN 104238475 A CN104238475 A CN 104238475A
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China
Prior art keywords
gas
zigbee
switch
relay
image data
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CN201310242541.0A
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CN104238475B (en
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金锋
原燚
沈宇怀
徐子龙
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SHANGHAI CHENZHUI INSTRUMENT CO Ltd
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SHANGHAI CHENZHUI INSTRUMENT CO Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention relates to a gas monitoring system based on a Zigbee network. The gas monitoring system comprises Zigbee wireless monitoring nodes used for monitoring gas-related devices in real time, a Zigbee coordinator and a control host. Each Zigbee wireless monitoring node comprises a gas sensor module and a Zigbee terminal module. The Zigbee coordinator is in wireless communication with the Zigbee wireless monitoring nodes so as to collect the collected data uploaded by the Zigbee wireless monitoring nodes. The control host is in communicated with the Zigbee coordinator and comprises a data memorizer, a fault alarm, a safety relay and a microprocessor. The microprocessor triggers the fault alarm to give out an alarm when the gas concentration in the collected data obtained through analysis exceeds the preset gas concentration threshold value, and controls the safety relay to turn off the corresponding gas-related devices. Compared with the prior art, the gas monitoring system based on the Zigbee network has the advantages that the self-organized network characteristics of the Zigbee and the self-diagnosis and redundancy fault-tolerant functions of the safety relay are fully utilized, safe and reliable control over workshop equipment is achieved by combining the advantages of the Zigbee network and the advantages of the safety relay, and the safety of the working environment of a workshop is improved.

Description

Based on the gas monitoring system of Zigbee network
Technical field
The present invention relates to a kind of gas monitoring system, particularly a kind of gas monitoring system based on Zigbee network.
Background technology
In modern industry is produced, along with the complexity of production technology, the equipment of factory floor is also day by day complicated, industrial security also more and more comes into one's own, in the production and course of conveying of factory floor gas, once certain the equipment work abnormal (inefficacy) in system, as there is Leakage Gas in gas course of conveying, just likely there is the hazard event such as fire, blast of such as factory floor, catastrophic effect can be caused to personnel, equipment or environment.
Based on the importance of safety in commercial production, many enterprises have employed the measure of gas monitor.Traditional gas monitor measure mostly carry out in a wired fashion connection monitoring, there is a lot of drawback in this monitor mode, as bulky, equipment is heavy, cost is high, monitoring range is little, difficult wiring, maintenance workload are large.Meanwhile, the anti-interference of this system is also poor, whole supervisory system may be caused to work, greatly limit the reliability of supervisory system once somewhere circuit goes wrong.
Summary of the invention
The object of the present invention is to provide a kind of gas monitoring system based on Zigbee network, for problems such as bulky, equipment is heavy, cost is high, monitoring range is little, difficult wiring, maintenance workload large, the poor reliability that solve that gas monitoring system in prior art exists.
For solving the problem and other problems, the invention provides a kind of gas monitoring system based on Zigbee network, comprise: Zigbee wireless monitor node, correspondence is arranged on relating on gas equipment, for relating to the gas concentration of gas equipment described in Real-Time Monitoring involved by commercial production; Described Zigbee wireless monitor node comprises gas sensor module and Zigbee terminal module; Zigbee telegon, is set up radio communication and is connected to gather the image data that described Zigbee wireless monitor node uploads with described Zigbee wireless monitor node by the Zigbee terminal module in described Zigbee wireless monitor node; The main control system communicated to connect with described Zigbee telegon, described main control system comprises: for storing the data-carrier store of described image data; Fault alarm; Safety relay; Be connected with described data-carrier store, described fault alarm and described fault alarm, for analyzing and make the microprocessor of corresponding control to the image data received from described Zigbee telegon; Described microprocessor obtains triggering when gas concentration exceedes default gas concentration threshold in described image data described fault alarm and is reported to the police and control described safety relay and turned off with the gas equipment that relates to corresponding to generation Leakage Gas analyzing.
Alternatively, described image data comprise the collection of described Zigbee wireless monitor node gas data and corresponding with described Zigbee wireless monitor node described in relate to the device data of gas equipment.
Alternatively, described Zigbee terminal module comprises: power supply; Dual-mode antenna; Memory module, with described gas sensor model calling, for storing described image data; Control processor, being connected with described gas sensor module, described data memory module and described dual-mode antenna, gathering gas data and the image data called in described memory module to be uploaded by described dual-mode antenna for controlling described gas sensor module to the described gas equipment that relates to.
Alternatively, described Zigbee telegon gathers the image data that described Zigbee wireless monitor node is uploaded, comprise: described Zigbee telegon obtains the image data of the described Zigbee wireless monitor node that radio communication connects with broadcast mode, the described image data obtained is added message queue, from described message queue, read described image data and be packaged into packet, and described packet is uploaded to described main control system.
Alternatively, the networking mode between described Zigbee wireless monitor node and described Zigbee telegon comprises stelliform connection topology configuration, tree topology or fully connected topology.
Alternatively, described safety relay comprises: power supply, control module, described control module also has the first controller, second controller and the inside binary channels for connecting described first controller and described second controller, the first relay be connected with described microprocessor and with tested described in relate to gas equipment the second relay of being connected of master switch, control channel between described power supply and described second relay, be located at the first double control switch in described inner binary channels, corresponding with described first relay, described first relay obtains controlling described first double control switch when gas concentration exceedes default gas concentration threshold in described image data in described microprocessor analysis and disconnects, be located in described control channel, the first instantaneous double control switch corresponding with described second relay, second instantaneous double control switch, first delay switch, and second delay switch, wherein, described first instantaneous double control switch and described second instantaneous double control switch are serially connected between described power supply and described second relay, described first delay switch and described second delay switch are serially connected between described power supply and described second relay, described first instantaneous double control switch and described first delay switch corresponding with described first controller, described second instantaneous double control switch and described second delay switch corresponding with described second controller, described control module controls described first instantaneous double control switch and the instantaneous disconnection of described second instantaneous double control switch respectively by described first controller and described second controller and controls described first delay switch and described second delay switch time delay disconnection respectively by described first controller and described second controller after described first double control switch disconnects, thus trigger the master switch relating to gas equipment described in described second relay shutoff correspondence.
Alternatively, described safety relay also comprises the delay cell be connected with described control module, for setting described first delay switch and described second delay switch time delay compared to described first instantaneous double control switch and described second instantaneous double control switch.
Alternatively, described safety relay also comprises the reset switch be connected with described control module, described reset switch sends reset signal when being triggered to described control module, control the first instantaneous double control switch, the second instantaneous double control switch, the first delay switch and the second delay switch for described control module according to described reset signal to close, thus trigger the master switch relating to gas equipment described in described second relay unlatching correspondence.
Alternatively, described safety relay also comprises: the interior light emitting diodes being located at described control module two ends, as the power switch of described safety relay; Lay respectively at the 3rd external light-emitting in the first external light-emitting on the road double control passage between described second instantaneous double control switch and described second relay, the single control channel of the second external light-emitting and another road between described second delay switch and described second relay, for detecting the output state of described safety relay.
Alternatively, relate to gas equipment described in comprise: produce the gas-generating apparatus of gas, the gas transport equipment of carrier gas and/or utilize the gas equipment of gas.
Gas monitoring system based on Zigbee network provided by the invention, make full use of the low-power consumption of Zigbee, networking is convenient, extensibility is strong, the self diagnosis of the feature that reliability is high and safety relay and functions of redundancy and fault tolerance, the advantages of both utilizations carries out safe and reliable control to relating to gas equipment, there is the life-span long, easy to use, high reliability, the advantages such as high security, and without the need to manual operation, can the gas concentration in conduct monitoring at all levels workshop, and obtaining trigger alarm when gas concentration in image data exceedes default gas concentration threshold and utilize safety relay to be turned off with the gas equipment that relates to occurred corresponding to Leakage Gas, the convenient gas that solves is at the leakage problem produced and in transportation, improve the security of industrial production environment.
Accompanying drawing explanation
Fig. 1 the present invention is based on the structural representation in safety relay gas monitoring system embodiment of Zigbee.
Fig. 2 is the structural representation of Zigbee wireless monitor node in Fig. 1.
Fig. 3 is the electrical block diagram of main control system in the safety relay gas monitoring system that the present invention is based on Zigbee.
Embodiment
The present inventor finds: in the prior art, gas monitoring system many employings wired mode, the problems such as bulky, equipment is heavy, cost is high, monitoring range is little, difficult wiring, maintenance workload are large, the poor reliability of existence.Therefore, the present inventor improves prior art, provide the gas monitoring system based on Zigbee network, make full use of the self-organizing network feature of Zigbee and the self diagnosis of safety relay and functions of redundancy and fault tolerance, the advantages of both utilizations carries out safe and reliable control to workshop appliance, improves the security of shopwork environment.
Below by way of specific instantiation, embodiments of the present invention are described, those skilled in the art the content disclosed by this instructions can understand other advantages of the present invention and effect easily.The present invention can also be implemented or be applied by embodiments different in addition, and the every details in this instructions also can based on different viewpoints and application, carries out various modification or change not deviating under spirit of the present invention.
It should be noted that, what provide in the present embodiment graphicly only illustrates basic conception of the present invention in a schematic way, then only the assembly relevant with the present invention is shown in graphic but not component count, shape and size when implementing according to reality is drawn, it is actual when implementing, and the kenel of each assembly, quantity and ratio can be a kind of change arbitrarily, and its assembly layout kenel also may be more complicated.
The gas monitoring system that the present invention is based on Zigbee network will be described in detail below with an instantiation.
Fig. 1 shows the gas monitoring system structural representation in one embodiment that the present invention is based on Zigbee network.It should be noted that, the gas monitoring system based on Zigbee network of the present invention is applied to during modern industry produces, and what relate to gas equipment for each involved by commercial production carries out gas monitor, to guarantee the security of industrial production environment.As shown in Figure 1, the gas monitoring system that the present invention is based on Zigbee network comprises: Zigbee wireless monitor node 2, Zigbee telegon 4 and main control system 6.
Zigbee wireless monitor node 2 correspondence be arranged on involved by commercial production each relate to gas equipment place, relate to the gas concentration of gas equipment described in each for Real-Time Monitoring.In the present embodiment, the described gas equipment that relates to both can be within workshop also can be outside workshop, comprised following one or more: the gas equipment producing the gas-generating apparatus of gas, the gas transport equipment (comprising transport pipeline) of carrier gas and/or utilize gas.The quantity of Zigbee wireless monitor node 2 can be determined according to the relating to gas equipment of required monitoring, generally speaking, one relates to a configurable Zigbee wireless monitor node 2 on gas equipment, but not as limit, if one relates to gas equipment and has the multiple monitoring points needing monitoring, so that relates to all configurable Zigbee wireless monitor node 2 in each monitoring point on gas equipment.In the present embodiment, specifically what Zigbee wireless monitor node 2 adopted is equipment based on ZigBee technology, and multiple Zigbee wireless monitor node 2 can form self organizing radio network network by ZigBee technology.
Further, composition graphs 1 and Fig. 2, Zigbee wireless monitor node 2 more can comprise gas sensor module 21 and Zigbee terminal module 23.Gas sensor module 21 is that one detects specific gas (such as: carbon monoxide CO gas, carbon dioxide CO 2gas, methane gas, coal gas, freon etc.) sensor, it is by gas type and convert electric signal to concentration dependent information and just can obtain and gas to be measured there is the relevant information of situation thus can carry out detecting, monitoring in the environment according to the power of these electric signal.Usually, gas sensor module 21 is material based on metal-oxide semiconductor (MOS) mostly, when tested gas is after the absorption of this semiconductor surface, its electrology characteristic (such as conductivity) can be caused to change.Zigbee terminal module 23 more comprises: power supply 231, dual-mode antenna 233, memory module 235 and control processor 237.Power supply 231 is for providing electric power support, and in actual applications, power supply can be AC-DC converter or accumulator.Dual-mode antenna 233 as communication interface, for transceiving data.Memory module 235 connects with gas sensor module 21, for store gas sensor module 21 and corresponding described in relate to the image data of gas equipment, in the present embodiment, described image data comprise gas data (such as gas type and gas concentration etc.) that gas sensor module 21 gathers and corresponding with gas sensor module 21 described in relate to the device data of gas equipment.Data memory module 235 can be conventional storage chip, preferably, such as, is Flash chip.Control processor 237 is connected with gas sensor module 21, data memory module 235 and dual-mode antenna 233, gathers gas data and the image data called in memory module 235 to be uploaded to Zigbee telegon 4 by dual-mode antenna 233 for controlling gas sensor module 21 to the described gas equipment that relates to.In the present embodiment, control processor 237 can be dsp chip or single-chip microcomputer, such as CC2530 processor.
Zigbee telegon 4 is set up radio communication by the Zigbee terminal module 23 in each Zigbee wireless monitor node 2 with each Zigbee wireless monitor node 2 and is connected, the image data that each Zigbee wireless monitor node connected for gathering radio communication is uploaded.In the present embodiment, especially, Zigbee telegon 4 and Zigbee wireless monitor node 2 are set up by Zigbee wireless network and are communicated to connect.Zigbee is the low-power consumption territory fidonetFido based on IEEE802.15.4 standard, and its tool has the following advantages: 1, closely; 2, low complex degree, self-organization; 3, low-power consumption; 4, low rate, adopts the product of ZigBee technology can provide 250kbps(16 channel on 2.4GHz), 915MHz provides 40kbps(10 channel) and 20kbps(1 channel is provided on 868MHz) transfer rate; 5, short time-delay; 6, low cost, Zigbee message transmission rate is low, and agreement is simple, so greatly reduce cost; 7, high power capacity, Zigbee adopts multiple network structure, manages some child nodes, maximum host node ALARA Principle 254 child nodes by a host node; Host node by last layer network node control, can also can form at most the catenet of 65000 nodes simultaneously.In addition, ZigBee technology has automatic network-building function, and network node can the existence of other nodes of perception, and determines annexation, forms structurized network.When the change of the increase of node or deletion, position and fault occur, network can self-regeneration, and adjusts accordingly network topology structure, without the need to manual intervention, still can ensure that whole system normally works.Such as, further, the Zigbee wireless network of foundation between Zigbee telegon 4 from each Zigbee wireless monitor node 2 can adopt different networking modes, stelliform connection topology configuration, tree topology or fully connected topology.
In the present embodiment, each Zigbee wireless monitor node 2 need by image data (gas data of monitoring point and Zigbee wireless monitor node corresponding described in relate to the device data of gas equipment) be uploaded to corresponding Zigbee telegon 4, that is, the image data that each Zigbee wireless monitor node 2 that Zigbee telegon 4 can gather radio communication connection is uploaded.Further, Zigbee telegon 4 also comprise protocol conversion is carried out to the image data gathered after be uploaded to main control system 6 again.In actual applications, Zigbee telegon 4 gathers the image data uploaded by Zigbee wireless monitor node 2 and carries out protocol conversion for uploading to the image data gathered, comprise: the image data that the Zigbee wireless monitor node 2 that Zigbee telegon 4 is connected with broadcast mode acquisition is uploaded, the described image data obtained is added gateway messages queue, from described gateway messages queue, read described image data and be packaged into packet, more described packet is uploaded to main control system 6.
Main control system 6 and Zigbee telegon 4 establish a communications link, for carrying out management and control to described Zigbee telegon 4, gather uploaded by Zigbee telegon 4 image data, the image data gathered stores, analyzes, adds up and processed and sends management and control instruction by Zigbee telegon 4 to corresponding Zigbee wireless monitor node 2 according to analysis result.
In the present embodiment, main control system 6 more comprises: data-carrier store 61, fault alarm 63, safety relay 65 and microprocessor 67.The image data that data-carrier store 61 is uploaded for storing each Zigbee telegon 4, data-carrier store 61 can be conventional storage chip, preferably, such as, is Flash chip.Microprocessor 67 is connected with safety relay 65, fault alarm 63 and data-carrier store 61, for analyzing the image data received and making corresponding control.Particularly, microprocessor 67 is analyzed the image data received, if when the gas concentration analyzing the gas data obtained in an image data exceedes the default gas concentration threshold for this gas type, then perform: send an alarm control signal to fault alarm 63 and reported to the police with trigger fault alarm 63, and turned off with the gas equipment that relates to occurred corresponding to Leakage Gas to make safety relay 65 to safety relay 65 sending controling instruction.
Further, refer to Fig. 3, it is the electrical block diagram of main control system in the safety relay gas monitoring system that the present invention is based on Zigbee, wherein, particularly illustrates the formation of safety relay 65 in main control system 6.As shown in Figure 3, in main control system 6, safety relay 65 comprises following each parts:
Power supply, for providing power supply support, in the present embodiment, described power supply source can adopt the direct supply of such as 24V.
Control module, in the present embodiment, described control module also has the first controller and second controller, and wherein, described first controller and described second controller are interconnected and form an inner binary channels.Twin-channel effect is the functions of redundancy and fault tolerance improving safety relay, and namely when the input of a certain passage is broken down, safety relay still can normally export.
First relay K 5, is connected with microprocessor 67.
Second relay K 6, with tested described in relate to gas equipment master switch be connected.
Control channel between described power supply and the second relay K 6.
Be located at the first double control switch S1 in inner binary channels, corresponding with the first relay K 5.
Be located at the first instantaneous double control switch K1 in described control channel, corresponding with the second relay K 6, the second instantaneous double control switch K2, the first delay switch K3 and the second delay switch K4, wherein, first instantaneous double control switch K1 and the second instantaneous double control switch K2 is serially connected between described power supply and the second relay K 6 and forms a road double control passage, first delay switch K3 and the second delay switch K4 is serially connected in and forms the single control channel in another road between described power supply and the second relay K 6, described double control passage and described single control channel parallel with one another.In addition, first instantaneous double control switch K1 and the first delay switch K3 is corresponding with described first controller, second instantaneous double control switch K2 and the second delay switch K4 is corresponding with described second controller, and described control module controls the first instantaneous double control switch K1 and the second instantaneous disconnection of instantaneous double control switch K2 respectively by described first controller and described second controller and controls the first delay switch K3 and the second delay switch K4 time delay disconnection respectively by described first controller and described second controller after the first double control switch S1 disconnects.
As mentioned above, first, second delay switch K3, K4 are that time delay disconnects relative to first, second instantaneous double control switch K1, K2, therefore, in the present invention, also provide the delay unit T1 realizing delay function.Delay cell T1 is connected with described control module, for setting first, second delay switch K3, K4 is compared to first, second instantaneous double control switch K1, t time delay of K2, the surge that the effect of time delay produces when being and preventing the unexpected power-off of equipment under test damages safety relay, described time delay t can according to the electric requirement of safety relay 65 or described in relate to the characteristic of gas equipment and self-adaptative adjustment, in addition, in actual applications, delay unit T1 can be such as an opertaing device with clocking capability, it is such as potentiometer, operationally, after described control module receives the signal of the first double control switch disconnection, trigger the delay unit T1 be connected with described control module and carry out timing, and after timing arrives predetermined delay time t, produce a triggering feedback information to described control module, the first delay switch K3 and the second delay switch K4 time delay disconnection is controlled respectively by described first controller and described second controller accordingly by described control module.
Have again, safety relay 65 also comprises the reset switch S2 be connected with described control module, reset switch S3 sends reset signal when being triggered to described control module, control the first instantaneous double control switch K1, the second instantaneous double control switch K2, the first delay switch K3 and the second delay switch K4 for described control module according to described reset signal to close, thus triggering the second relay K 6 opens the master switch relating to gas equipment described in correspondence.
Further, safety relay 65 also can comprise: the interior light emitting diodes D1 being located at described control module two ends, as the power switch of safety relay 65.First, second external light-emitting D2, D3, lay respectively between the second instantaneous double control switch K2 and the second relay K 6 in two-way control channel, in single control channel of the 3rd external light-emitting D4 between the second delay switch K4 and the second relay K 6.Above-mentioned first, second external light-emitting D2, D3 and the 3rd external light-emitting D4 are the output states for detecting safety relay 65.Further, any one in above-mentioned first, second external light-emitting D2, D3 and the 3rd external light-emitting D4 also can be connected in series a resistance respectively.
For the safety relay 65 shown in Fig. 3, its principle of work in practical application is roughly as follows:
During original state, first double control switch S1 is in closure state, first press reset switch S2(reset switch S2 first to disconnect and closing afterwards, namely first safety relay 65 1 reset signals are given), first, second instantaneous double control switch K1, K2 and first, second delay switch K3, K4 closes at once, gas equipment is related to and safety relay is in normal operating conditions described in controlled, the described gas equipment that relates to runs well, when microprocessor 67 receives the image data that zigbee telegon 4 sends, microprocessor 67 carries out Data Comparison, as analyze obtain as described in gas concentration exceedes default gas concentration threshold in image data time, trigger the first relay K 5 be attached thereto, first double control switch S1 is disconnected, described control module receives after the signal disconnected occurs the first double control switch S1 and operates the relay of safety relay inside, namely control the first instantaneous double control switch K1 and the second instantaneous disconnection of instantaneous double control switch K2 respectively by described first controller and described second controller and control the first delay switch K3 and the second delay switch K4 time delay disconnection respectively by described first controller and described second controller again in conjunction with delay cell T1, so, trigger the second relay K 6 and relate to gas equipment master switch described in making and disconnect.Follow-up, only have when again press reset switch S2(first have no progeny close) time, safety relay and controlled described in relate to gas equipment could normal work.
Below on the whole the course of work of gas monitoring system in an embody rule that the present invention is based on Zigbee network is described in detail: gather the corresponding gas data (such as gas type and gas concentration etc.) relating to gas equipment by the gas sensor module 21 in Zigbee wireless monitor node 2, control processor 237 is sent into through process, the device data relating to gas equipment described in read gas data and gas sensor module 21 correspondence is uploaded to Zigbee telegon 4 as image data by dual-mode antenna 233 by control processor 237, the data gathered are sent to main control system 6 by serial communication image data by Zigbee telegon 4, microprocessor in main control system 6 67 pairs of image data carry out analyzing and processing, if as process obtains when the gas concentration analyzing the gas data obtained in an image data exceedes the default gas concentration threshold for this gas type by analysis, namely trigger fault alarm 63 carries out reporting to the police and image data is sent to data-carrier store 61 and stored, simultaneously, microprocessor 67 is to safety relay 65 sending controling instruction, make safety relay 65 trigger immediately turned off with the master switch 24 relating to gas equipment occurred corresponding to Leakage Gas, thus the leakage again of gas can be prevented in time.
Specifically be, gas sensor module 21 is used to gather gas data, if the gas equipment that relates to of correspondence is not in running status (namely not carrying out the production of gas, transport), gas sensor module 21 is made not carry out data acquisition by the Zigbee terminal module 23 arranged in Zigbee wireless monitor node 2, Zigbee wireless monitor node 2 is made only to carry out the signal scanning of low-power consumption, to ensure the operation of Zigbee network.
In sum, gas monitoring system based on Zigbee network provided by the invention, make full use of the low-power consumption of Zigbee, networking is convenient, extensibility is strong, the self diagnosis of the feature that reliability is high and safety relay and functions of redundancy and fault tolerance, the advantages of both utilizations carries out safe and reliable control to relating to gas equipment, there is the life-span long, easy to use, high reliability, the advantages such as high security, and without the need to manual operation, can the gas concentration in conduct monitoring at all levels workshop, and obtaining trigger alarm when gas concentration in image data exceedes default gas concentration threshold and utilize safety relay to be turned off with the gas equipment that relates to occurred corresponding to Leakage Gas, the convenient gas that solves is at the leakage problem produced and in transportation, improve the security of industrial production environment.
Above-described embodiment is illustrative principle of the present invention and effect thereof only, but not for limiting the present invention.Any person skilled in the art scholar all without prejudice under spirit of the present invention and category, can modify above-described embodiment or changes.Therefore, such as have in art usually know the knowledgeable do not depart from complete under disclosed spirit and technological thought all equivalence modify or change, must be contained by claim of the present invention.

Claims (10)

1. based on a gas monitoring system for Zigbee network, it is characterized in that, comprising:
Zigbee wireless monitor node, correspondence is arranged on relating on gas equipment, for relating to the gas concentration of gas equipment described in Real-Time Monitoring involved by commercial production; Described Zigbee wireless monitor node comprises gas sensor module and Zigbee terminal module;
Zigbee telegon, is set up radio communication and is connected to gather the image data that described Zigbee wireless monitor node uploads with described Zigbee wireless monitor node by the Zigbee terminal module in described Zigbee wireless monitor node;
The main control system communicated to connect with described Zigbee telegon, described main control system comprises: for storing the data-carrier store of described image data; Fault alarm; Safety relay; Be connected with described data-carrier store, described fault alarm and described fault alarm, for analyzing and make the microprocessor of corresponding control to the image data received from described Zigbee telegon; Described microprocessor obtains triggering when gas concentration exceedes default gas concentration threshold in described image data described fault alarm and is reported to the police and control described safety relay and turned off with the gas equipment that relates to corresponding to generation Leakage Gas analyzing.
2. the gas monitoring system based on Zigbee network according to claim 1, it is characterized in that, described image data comprise the collection of described Zigbee wireless monitor node gas data and corresponding with described Zigbee wireless monitor node described in relate to the device data of gas equipment.
3. the gas monitoring system based on Zigbee network according to claim 2, is characterized in that, described Zigbee terminal module comprises:
Power supply;
Dual-mode antenna;
Memory module, with described gas sensor model calling, for storing described image data;
Control processor, being connected with described gas sensor module, described data memory module and described dual-mode antenna, gathering gas data and the image data called in described memory module to be uploaded by described dual-mode antenna for controlling described gas sensor module to the described gas equipment that relates to.
4. the gas monitoring system based on Zigbee network according to claim 2, it is characterized in that, described Zigbee telegon gathers the image data that described Zigbee wireless monitor node is uploaded, comprise: described Zigbee telegon obtains the image data of the described Zigbee wireless monitor node that radio communication connects with broadcast mode, the described image data obtained is added message queue, from described message queue, read described image data and be packaged into packet, and described packet is uploaded to described main control system.
5. the gas monitoring system based on Zigbee network according to claim 1, it is characterized in that, the networking mode between described Zigbee wireless monitor node and described Zigbee telegon comprises stelliform connection topology configuration, tree topology or fully connected topology.
6. the gas monitoring system based on Zigbee network according to claim 1, is characterized in that, described safety relay comprises:
Power supply;
Control module, described control module also has the first controller, second controller and the inside binary channels for connecting described first controller and described second controller;
The first relay be connected with described microprocessor and with tested described in relate to gas equipment the second relay of being connected of master switch;
Control channel between described power supply and described second relay;
Be located at the first double control switch in described inner binary channels, corresponding with described first relay, described first relay obtains controlling described first double control switch when gas concentration exceedes default gas concentration threshold in described image data in described microprocessor analysis and disconnects;
Be located in described control channel, the first instantaneous double control switch corresponding with described second relay, second instantaneous double control switch, first delay switch, and second delay switch, wherein, described first instantaneous double control switch and described second instantaneous double control switch are serially connected between described power supply and described second relay, described first delay switch and described second delay switch are serially connected between described power supply and described second relay, described first instantaneous double control switch and described first delay switch corresponding with described first controller, described second instantaneous double control switch and described second delay switch corresponding with described second controller, described control module controls described first instantaneous double control switch and the instantaneous disconnection of described second instantaneous double control switch respectively by described first controller and described second controller and controls described first delay switch and described second delay switch time delay disconnection respectively by described first controller and described second controller after described first double control switch disconnects, thus trigger the master switch relating to gas equipment described in described second relay shutoff correspondence.
7. the gas monitoring system based on Zigbee network according to claim 6, it is characterized in that, described safety relay also comprises the delay cell be connected with described control module, for setting described first delay switch and described second delay switch time delay compared to described first instantaneous double control switch and described second instantaneous double control switch.
8. the gas monitoring system based on Zigbee network according to claim 6 or 7, it is characterized in that, described safety relay also comprises the reset switch be connected with described control module, described reset switch sends reset signal when being triggered to described control module, control the first instantaneous double control switch, the second instantaneous double control switch, the first delay switch and the second delay switch for described control module according to described reset signal to close, thus trigger the master switch relating to gas equipment described in described second relay unlatching correspondence.
9. the gas monitoring system based on Zigbee network according to claim 8, is characterized in that, described safety relay also comprises:
Be located at the interior light emitting diodes at described control module two ends, as the power switch of described safety relay;
Lay respectively at the 3rd external light-emitting in the first external light-emitting on the road double control passage between described second instantaneous double control switch and described second relay, the single control channel of the second external light-emitting and another road between described second delay switch and described second relay, for detecting the output state of described safety relay.
10. the gas monitoring system based on Zigbee network according to claim 1, is characterized in that, described in relate to gas equipment and comprise: produce the gas-generating apparatus of gas, the gas transport equipment of carrier gas and/or utilize the gas equipment of gas.
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