CN206363133U - A kind of generator wireless monitoring device - Google Patents

A kind of generator wireless monitoring device Download PDF

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Publication number
CN206363133U
CN206363133U CN201621116771.8U CN201621116771U CN206363133U CN 206363133 U CN206363133 U CN 206363133U CN 201621116771 U CN201621116771 U CN 201621116771U CN 206363133 U CN206363133 U CN 206363133U
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China
Prior art keywords
generator
module
antenna
wireless
voltage
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Expired - Fee Related
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CN201621116771.8U
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Chinese (zh)
Inventor
马忠东
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马忠东
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Priority to CN201621116771.8U priority Critical patent/CN206363133U/en
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Publication of CN206363133U publication Critical patent/CN206363133U/en
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Abstract

The utility model is a kind of generator wireless monitoring device, the client of monitor is connected including generator, the monitor of collection Generator Status parameter, with communication, characterized in that, being also arranged at the electrical appliance kit on generator and the antenna for radio communication including one;The antenna is arranged on electrical appliance kit, and antenna connects monitor by transmission line, and antenna is by sending and receiving wireless signal wireless connection client;Also at least provided with one kind in the accessory power outlet, electric switch, indicator lamp of generator on the electrical appliance kit.The antenna of generator wireless monitoring device is arranged on generator electrical appliance kit by the utility model, with radio communication effect is good and the simple obvious advantage of mounting structure, and it is good to transform adaptability.

Description

A kind of generator wireless monitoring device
Technical field
The utility model is related to generator wireless supervisory control system, more particularly to generator wireless monitor driven by the engine System.
Background technology
Generating set is mainly made up of engine, generator and electric-control system, and generator is by engine driving, in automatically controlled system The chemical energy of fuel oil is converted into electric energy under the control of system, had a wide range of applications, for example:Emergence power, field work, disaster Many occasions such as treatment, open air life and travelling, yacht and the power autonomous, mobile communication base station of vehicle.
During generating set production and use, in order to check the working condition of generating set, it is necessary to generating set The state parameters such as electric current, voltage and the power of output are monitored in real time, now usually require to connect in the output end of generating set Special test equipment is connect, for example:Electrical parameter measuring instrument.It is relatively heavier but these test equipment volumes are larger, with generator Multiple conducting wires will be connected between load, need to reconnect all wires, Er Qiexu when load or generating set replacing Special external power supply is wanted, uses very inconvenient, is typically only capable to use in the special test in manufacturer, it is impossible to Meet generating set user in the wild whenever and wherever possible monitoring generating set working condition the need for.
The utility model is exactly conceived to the deficiency that existing generating set uses special test equipment, in generating set Special wireless monitoring device is set, and the apparatus structure is simple, does not have outer lead company between generator output end and load Connect, the original electric-control system of generating set can not be changed and worked independently, and can be by generator power itself, without power network, electric power storage The external power sources such as pond, with reliability is high, cost is low, transform simple advantage.The device can be to hair after generator startup The state parameters such as output voltage, electric current and the power of group of motors are detected in real time, can pass through WIFI, GPRS or indigo plant whenever and wherever possible The communications such as tooth will detect that data are sent to the client on the mobile phone of user, computer and wearable device.In addition, This patent also adds wireless shut-off function for the device, and using client softwares such as the mobile phone of user at one's side, user need not connect Running parameter of the nearly generating set with regard to energy real time inspection generating set, it is possible to pass through client software and close generating set, pole Big is convenient for users.
By Optimal improvements, the antenna of generator wireless monitoring device is arranged on generator electrical appliance kit by the utility model On, with radio communication effect is good and the simple obvious advantage of mounting structure, and it can be easy to by this scheme to generate electricity to existing Unit is transformed, it is easy to implemented.
Utility model content
The purpose of this utility model is to overcome the problem of prior art is present to fill there is provided a kind of generator wireless monitor Put.
To realize above-mentioned technical purpose and the technique effect, the utility model is achieved through the following technical solutions:
A kind of generator wireless monitoring device, including generator, gather Generator Status parameter monitor, with channel radio Letter mode connects the client of monitor, it is characterised in that be also arranged at electrical appliance kit on generator and for nothing including one The antenna of line communication;
The antenna is arranged on electrical appliance kit, and antenna connects monitor by transmission line, and antenna is by sending and receiving nothing Line signal wireless connection client;
Also at least provided with one kind in the accessory power outlet, electric switch, indicator lamp of generator on the electrical appliance kit.
Further, the electrical appliance kit is made up of box body and lid, and the box body is connected with generator, and the antenna is set On lid.
Further, the lid is made up of plate-shaped metal material, and the antenna root passes through the mounting hole on lid, and It is connected by corresponding fastener with lid.
Further, the antenna is external antenna.
Further, the antenna is made up of antenna house, mast, antenna pedestal and transmission line, the antenna pedestal and electrical equipment The lid of box is connected.
Further, the monitor is by power module, data acquisition module, data processing module, wireless communication module Composition, wherein:
The input of the power module is connected with generator, the output end of power module and data processing module and/or Wireless communication module is connected, and it is that data processing module and/or wireless communication module provide power supply that power module, which is used for,;
The data processing module is mainly made up of Micro-processor MCV, for according to gathered data and calculating generator Voltage U, electric current I, power W and fuel consumption G parameters, and the generator parameter that calculating is obtained is sent to wireless communication module;
The data acquisition module mainly includes voltage acquisition unit and current acquisition unit, the voltage acquisition unit pair The output voltage U of generator is detected, and generator output voltage U is processed into suitable microprocessor by difference channel MCU carries out the voltage signal of AD samplings, and by signal feeding Micro-processor MCV sampling, the current acquisition unit is to generator Output current I is detected, and output current I is converted into voltage signal, is handled by amplifier and peripheral circuit differential sample And filtering generation is adapted to the voltage signal that Micro-processor MCV carries out AD samplings, by signal feeding Micro-processor MCV sampling, data The output end of acquisition module is connected with data processing module, and the voltage and current data collected are sent into data processing mould Block;
The wireless communication module is connected with data processing module, for generator parameter to be sent out in the way of radio communication Give client.
Further, the client includes being provided with the user mobile phone and computer and wearable device of client software.
Further, by any in WIFI, GPRS or bluetooth approach between the wireless communication module and client One kind carries out radio communication, and generator parameter is included on user mobile phone, computer or wearable device by client.
Further, the power module is made up of rectifier bridge, flyback transformer and switching power source chip, power module The alternating current that generator is exported is converted to direct current by rectifier bridge, then the voltage of the direct current is passed through into flyback transformer Data processing module and the available supply voltage of wireless communication module are processed into switching power source chip.
Further, the generator wireless monitoring device also include performing module, the performing module by relay and after Electrical apparatus driving circuit is constituted, and performing module is connected with data processing module, is sent and shut down to wireless communication module by client During instruction, performing module can carry out quenching operations to engine, generating set is stopped.
The beneficial effects of the utility model are:
The utility model sets special wireless monitoring device in generating set, and the apparatus structure is simple, with generator There is no outer lead connection between output end and load, the original electric-control system of generating set can not be changed and worked independently, and can By generator power itself, without external power sources such as power network, batteries, with reliability is high, cost is low, transformation is simple excellent Point.
The device can be carried out to state parameters such as the output voltages, electric current and power of generating set after generator startup Detection in real time, can will detect that data are sent to the hand of user by communications such as WIFI, GPRS or bluetooths whenever and wherever possible Client on mechanical, electrical brain and wearable device.
In addition, the utility model also adds wireless shut-off function for the device, the clients such as the mobile phone of user at one's side are utilized Software is held, user need not be close to running parameter of the generating set with regard to energy real time inspection generating set, it is possible to soft by client Part closes generating set, has great convenience for the user to use.
The antenna of generator wireless monitoring device is arranged on generator electrical appliance kit by the utility model, with radio communication Effect is good and the simple obvious advantage of mounting structure, and can be easy to by this scheme to transform existing generating set, easily In implementation.
Brief description of the drawings
Fig. 1 is generator wireless monitoring device structured flowchart of the present utility model;
Fig. 2 is the generating set stereogram of the utility model embodiment one;
Fig. 3 is the generating set front view of the utility model embodiment one;
Fig. 4 is the generating set electrical appliance kit stereogram of the utility model embodiment one;
Fig. 5 is monitor of the present utility model and antenna stereogram;
Fig. 6 is the installation diagram of the utility model antenna and lid;
Fig. 7 is the generating set lid of the utility model embodiment one and the explosive view of antenna;
Fig. 8 is the circuit theory diagrams of the utility model monitor power module;
Fig. 9 is the circuit theory diagrams of the utility model monitor voltage and frequency collection unit;
Figure 10 is the circuit theory diagrams of the utility model monitor current collecting unit;
Figure 11 is the circuit theory diagrams of the utility model monitor data processing module;
Figure 12 is the circuit theory diagrams of the utility model monitor performing module;
Figure 13 is the generating set stereogram of the utility model embodiment two;
Figure 14 is the generating set electrical appliance kit stereogram of the utility model embodiment two(Lid is taken apart from box body);
Figure 15 is the generating set lid of the utility model embodiment two and the explosive view of antenna.
Label declaration in figure:1. generating set, 2. electrical appliance kits, 201. box bodys, 202. lids, 3. casings, 4. frameworks, 5. days Line, 501. antenna houses, 502. masts, 503. antenna pedestals, 504. antenna terminals, 505. nuts, 506. transmission lines, 6. monitoring Device, 7. accessory power outlets, 8. electric switches, 9. indicator lamps, 10. earth studs.
Embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in detail.
This patent provides 2 kinds of embodiments:
Embodiment one:
Generator described in the present embodiment is electrical excitation synchronous generator or multi-polar permanent-magnet generator, and the former is traditional small-sized Generating set, the latter is the inverter generator group or DC charging electric generator group for representing small power generation unit developing direction, is generated electricity Machine is connected with engine crankshaft output end, and electric energy is exported under the driving of engine, and the engine is gasoline, diesel oil or combustion gas Engine.But it is clear that the generator wireless monitoring device described in this patent is not limited by generating set species, in the sun It can generate electricity, wind power generation and generating electricity from manpower field can also be applied.
As shown in Figures 1 to 12, generating set 1 described in the present embodiment is main by engine, generator, casing 3, electrical appliance kit 2 and electric-control system constitute, engine is connected with casing 3, and generator is connected with engine, and engine and generator are all housed inside Within casing 3.Electrical appliance kit 2 is provided with casing 3, electrical appliance kit 2 is mainly made up of box body 201 and lid 202, box body 201 is modeling Materials and parts, combine together with a part of casing 3.Lid 202 is mainly made up of panel, and panel is typically made up of sheet metal, panel On be provided with multiple mounting holes, for installing the devices such as accessory power outlet 7, electric switch 8, indicator lamp 9 and earth stud 10, when So, the other parts of electric-control system can also be installed inside electrical appliance kit 2, such as controller and igniting block.Antenna 5 is arranged on electricity On device box 2, monitor 6 is connected with casing 3, is connected between monitor 6 and antenna 5 with transmission line 506.
As shown in Figures 1 to 12, the generator wireless monitoring device described in the present embodiment mainly includes:Monitor 6, antenna 5 and client modules, the monitor 6 is by power module, data acquisition module, data processing module, performing module and wireless Communication module is constituted, and monitor 6 is connected with casing 3, and monitor 6 is connected by wire with generator, for being carried out to generator It is monitored and controlled.
As shown in Figure 6 and Figure 7, the antenna 5 is external antenna, mainly by wire shroud 501, mast 502, antenna pedestal 503rd, antenna terminal 504 and transmission line 506 are constituted, and antenna pedestal 503 and antenna terminal 504 are located at antenna root, and wherein antenna connects Carry nut 505 on first 504, antenna terminal 504 through the mounting hole on lid 202, antenna terminal 504 by nut 505 with Lid 202 is connected, and antenna pedestal 503 is connected with antenna terminal 504 by screw thread, and mast 502 is connected with antenna pedestal 503, antenna Bar 502 is contained in antenna house 501, and the oral area of antenna house 501 is connected with antenna pedestal 503.
The generator wireless monitoring device of this patent can work independently, as long as the power take-off L/N lines with generator Connection, without external power source, with simple in construction, the high advantage of reliability.Due to the monitoring system and generator itself Electric-control system do not contact, in the absence of compatibility issue, can be widely applied to various types of generating sets, such as electricity is encouraged Magnetic generator group or inverter generator group.
As illustrated in figures 1 and 8, the input of the power module is connected with generator, the output end and number of power module It is connected according to processing module with wireless communication module, it is that data processing module and wireless communication module provide electricity that power module, which is used for, Source.The power module is mainly made up of rectifier bridge, flyback transformer and switching power source chip, and power module will generate electricity first The alternating current of machine output is converted to direct current by rectifier bridge, then the voltage of the direct current is passed through into flyback transformer and switch Power supply chip is processed into data processing module, wireless communication module and the available supply voltage of other circuits.I.e. the generator without Line monitoring system is by generator power itself, without external power source or battery.
As shown in figure 8, the operation principle of the power module is as follows:
1st, the alternating current that generator is sent is DC voltage, RVSA1 NTC resistance by fuse F1 and rectifier bridge rectification Play and using for C7 charging currents is limited in start-up course, prevent rectifier bridge from damaging.
2nd, the DC voltage after rectification is handled by flyback transformer and TNY288PG switching power source chips, TNY288PG starts and worked from R1, R2, R3 power taking.
3rd, when Switching Power Supply works, flyback transformer secondary is coupled out constant 7V power supplys, and D4 and U6 etc. constitute feedback Loop.
4th, 7V voltages are switched to 5V and used for comparator, current sensor by U1.
5th, 5V voltages are switched to 3.3V and used for the chip such as MCU and amplifier, wireless communication module and circuit by U2.
As shown in figure 1, the data acquisition module mainly includes voltage acquisition unit, current acquisition unit and frequency collection Unit, voltage acquisition unit detects to the output voltage U of generator, output current I of the current acquisition unit to generator Detected, frequency collection unit is detected to the frequency of generator output voltage, the output end and number of data acquisition module It is connected according to processing module, the voltage collected, electric current and frequency data is sent to data processing module.Such as Fig. 1 and Figure 11 institutes Show, the data processing module is mainly made up of Micro-processor MCV, reset circuit, external memory chip and crystal oscillating circuit etc., it is main To be used for calculating the parameters such as voltage U, electric current I, frequency, power W and the fuel consumption G of generator according to gathered data, and will calculate Obtained generator parameter is sent to wireless communication module.
As shown in Fig. 1 and Fig. 9, generator output voltage is processed into suitable by the voltage acquisition unit by difference channel Micro-processor MCV carries out the voltage signal of AD samplings, by signal feeding Micro-processor MCV sampling.Voltage signal passes through comparator Compare generation and generator voltage frequency identical square-wave signal, frequency is calculated for Micro-processor MCV sampling.Such as Fig. 1 and Figure 10 Shown, the current acquisition unit detects output generator current by current sensor, and current signal is converted into voltage letter Number, handled by amplifier and be adapted to the voltage letter that Micro-processor MCV carries out AD samplings with peripheral circuit differential sample and filtering generation Number, by signal feeding Micro-processor MCV sampling.
As shown in figure 1, the wireless communication module is connected with data processing module, the antenna 5 by transmission line 506 with Wireless communication module is connected, and for sending or receiving wireless signal, antenna 5 has amplification to wireless signal, can increase nothing The propagation distance of line signal.
Wireless communication module can carry out two-way wireless communication by antenna 5 between client modules, be mainly used to by Generator parameter is sent to client modules in the way of radio communication, and receives in the way of radio communication client modules The shutdown command sent, client modules mainly include the user mobile phone, computer or wearable device for being provided with client software Deng.
Pass through any one in the modes such as WIFI, GPRS or bluetooth between the wireless communication module and client modules Two-way wireless communication is carried out, the generator parameter such as voltage, electric current, frequency, power and fuel consumption that collection and calculating are obtained leads to Cross client software to be shown on user mobile phone or computer or wearable device, facilitate user's real time inspection generator operation shape State.When user distance generator is nearer, using WIFI or Bluetooth technology, mobile phone, computer or the wearable device of user can be with Directly it is connected with the wireless communication module on generator, the two directly carries out radio communication.When user distance generator farther out when, Mobile phone, computer or the wearable device of user can be connected by router or base station etc. with wireless communication module, and the two can enter Row remote radio communication, now generator can be connected by wireless communication module with remote server or cloud platform, can be by The data collected are sent to remote server or calculating is checked, stored and analyzed to cloud platform.
After user is by fuel oil top off, fuel tank can be calculated according to the fuel consumption G of volume of fuel tank and generator and remained Remaining amount of fuel, user easily can check fuel tank on the client software of the terminals such as mobile phone, computer or wearable device Fuel Remained amount, when amount of fuel is not enough, system can send alarm, remind user to supplement fuel oil in time for generator, prevent hair Group of motors is stopped because of empty.
Based on parameters such as the generator running times and power collected, the client installed in the client modules Software can show warning, maintenance information and the failure help information of generator according to running status, find and solve to use The problem of family during generator using running into.For example, when the generator power for finding to collect exceedes rated power, software Overload warning can be sent.When period as defined in maintenance is reached between when running, software reminds user to enter as early as possible to generator Row maintenance, such as changing engine motor oil, cleaning air filter and change spark plug.It can not start, send out when running into engine Motor can not normal work the problems such as when, user can be fixed a breakdown by the help information checked in software.
As shown in fig. 1 and 12, the performing module is mainly made up of relay and relay drive circuit, performing module with Data processing module is connected, and during by client software to generating set transmission shutdown command, data processing module receives wireless The off signal of communication module, calculates the backward performing module of processing and sends shutdown command, performing module is stopped working to engine Operation, makes generating set be stopped.Since so, when generating set is using finishing, user need not be close to generating set, just Generator can be remotely closed, user uses and operated very convenient.
In summary, this patent is entered by independent data acquisition module to parameters such as generator voltage, electric current and frequencies Row collection in real time, obtains the parameters such as generator power and fuel consumption by the calculating processing of data processing module, passes through channel radio Generator parameter is sent to the mobile phone, computer and wearable device of user with communications such as WIFI by letter module and antenna Deng on terminal device, user can easily check generator operation parameter on client software, it is not necessary to close to generator, use Family can just grasp generator fuel consumption and running status whenever and wherever possible, have great convenience for the user to use, improve user's body Test.Power module, data acquisition module, data processing module, performing module and the wireless communication module of this patent have a style of one's own Monitor 6 is constituted, monitor 6 is only connected with L, N output end of generator, can complete independently monitoring task, simple in construction, transformation Convenient, reliability is high.Because the electric-control system with generator itself is not contacted, in the absence of compatibility issue, it can answer extensively For all kinds generating set, such as electrical excitation Synchronous generator or inverter generator group.
The antenna 5 of generator wireless monitoring device is arranged on generator electrical appliance kit 2 by this patent, with radio communication effect Fruit is good and the simple obvious advantage of mounting structure, and can be easy to by this scheme to transform existing generating set, it is easy to Implement.
Embodiment two:
As shown in FIG. 13 to 15, compared with embodiment one, the main distinction of the present embodiment is:Sent out described in the present embodiment Motor is Open architecture, without casing 3, and generator and engine are arranged on framework 4, and electrical appliance kit 2 is by box body 201 and lid 202 compositions, box body 201 is generally working of plastics, is directly connected with framework 4.Lid 202 is typically manufactured by sheet metal, is had above Multiple mounting holes, for installing the devices such as accessory power outlet 7, indicator lamp 9 or electric switch 8.
As shown in FIG. 13 to 15, the antenna 5 of the present embodiment is arranged on the lid 202 of electrical appliance kit 2, the antenna of antenna 5 Seat 503 is connected through the mounting hole on lid 202 by the nut 505 on antenna terminal 504 with lid 202.The present embodiment Antenna 5 is arranged on outside electrical appliance kit 2, certainly as needed, and antenna 5 can also be arranged on inside electrical appliance kit 2.
But, the application of this patent is not limited by generator species, it is clear that this patent can also be used for other kinds of Generating set, such as large-scale diesel generating set, and it is various have brush or brushless electrical excitation Synchronous generator or direct current Charging generator.Certainly, this patent can also be applied in solar power generation, wind power generation and generating electricity from manpower field.
Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.

Claims (10)

1. a kind of generator wireless monitoring device, including generator, the monitor for gathering Generator Status parameter(6), with wireless Communication mode connects monitor(6)Client, it is characterised in that the electrical appliance kit on generator is also arranged at including one(2), with And the antenna for radio communication(5);
The antenna(5)It is arranged on electrical appliance kit(2)On, antenna(5)Pass through transmission line(506)Connect monitor(6), antenna(5) By sending and receiving wireless signal wireless connection client;
The electrical appliance kit(2)On accessory power outlet also at least provided with generator(7), electric switch(8), indicator lamp(9)In It is a kind of.
2. generator wireless monitoring device according to claim 1, it is characterised in that the electrical appliance kit(2)By box body (201)And lid(202)Composition, the box body(201)It is connected with generator, the antenna(5)It is arranged on lid(202)On.
3. generator wireless monitoring device according to claim 2, it is characterised in that the lid(202)By tabular gold Belong to material to constitute, the antenna(5)Root passes through lid(202)On mounting hole, and pass through corresponding fastener and lid (202)It is connected.
4. generator wireless monitoring device according to claim 3, it is characterised in that the antenna(5)For external day Line.
5. the generator wireless monitoring device according to claim 2 or 4, it is characterised in that the antenna(5)By antenna house (501), mast(502), antenna pedestal(503)And transmission line(506)Constitute, the antenna pedestal(503)With electrical appliance kit(2)Box Lid(202)It is connected.
6. generator wireless monitoring device according to claim 1, it is characterised in that the monitor(6)By power supply mould Block, data acquisition module, data processing module, wireless communication module composition, wherein:
The input of the power module is connected with generator, the output end of power module and data processing module and/or wireless Communication module is connected, and it is that data processing module and/or wireless communication module provide power supply that power module, which is used for,;
The data processing module is mainly made up of Micro-processor MCV, for according to gathered data and calculating the voltage of generator U, electric current I, power W and fuel consumption G parameters, and the generator parameter that calculating is obtained is sent to wireless communication module;
The data acquisition module mainly includes voltage acquisition unit and current acquisition unit, and the voltage acquisition unit is to generating electricity The output voltage U of machine detected, and generator output voltage U is processed into suitable Micro-processor MCV by difference channel entered The voltage signal of row AD samplings, by signal feeding Micro-processor MCV sampling, output electricity of the current acquisition unit to generator Stream I is detected, and output current I is converted into voltage signal, is handled by amplifier and peripheral circuit differential sample and filtering Generation is adapted to the voltage signal that Micro-processor MCV carries out AD samplings, by signal feeding Micro-processor MCV sampling, data acquisition module The output end of block is connected with data processing module, and the voltage and current data collected are sent into data processing module;
The wireless communication module is connected with data processing module, for generator parameter to be sent in the way of radio communication Client.
7. the generator wireless monitoring device according to claim 1 or 6, it is characterised in that the client includes installing There are the user mobile phone and computer and wearable device of client software.
8. generator wireless monitoring device according to claim 6, it is characterised in that the wireless communication module and client Radio communication is carried out by any one in WIFI, GPRS or bluetooth approach between end, generator parameter is passed through into client It is shown on user mobile phone, computer or wearable device.
9. generator wireless monitoring device according to claim 6, it is characterised in that the power module by rectifier bridge, Flyback transformer and switching power source chip are constituted, and power module is converted to the alternating current that generator is exported directly by rectifier bridge Stream electricity, then the voltage of the direct current by flyback transformer and switching power source chip is processed into data processing module and wireless The available supply voltage of communication module.
10. generator wireless monitoring device according to claim 6, it is characterised in that the generator wireless monitoring device Also include performing module, the performing module is made up of relay and relay drive circuit, performing module and data processing mould Block is connected, and during by client to wireless communication module transmission shutdown command, performing module can carry out flame-out behaviour to engine Make, generating set is stopped.
CN201621116771.8U 2016-10-12 2016-10-12 A kind of generator wireless monitoring device Expired - Fee Related CN206363133U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621116771.8U CN206363133U (en) 2016-10-12 2016-10-12 A kind of generator wireless monitoring device

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Application Number Priority Date Filing Date Title
CN201621116771.8U CN206363133U (en) 2016-10-12 2016-10-12 A kind of generator wireless monitoring device

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Publication Number Publication Date
CN206363133U true CN206363133U (en) 2017-07-28

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106292500A (en) * 2016-10-12 2017-01-04 马忠东 A kind of electromotor wireless monitoring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106292500A (en) * 2016-10-12 2017-01-04 马忠东 A kind of electromotor wireless monitoring device

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Granted publication date: 20170728

Termination date: 20181012