CN207704297U - A kind of constant temperature system of thermostatic equipment - Google Patents
A kind of constant temperature system of thermostatic equipment Download PDFInfo
- Publication number
- CN207704297U CN207704297U CN201820378932.3U CN201820378932U CN207704297U CN 207704297 U CN207704297 U CN 207704297U CN 201820378932 U CN201820378932 U CN 201820378932U CN 207704297 U CN207704297 U CN 207704297U
- Authority
- CN
- China
- Prior art keywords
- relay
- temperature
- module
- constant temperature
- thermostatic equipment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000010438 heat treatment Methods 0.000 claims abstract description 29
- 238000012545 processing Methods 0.000 claims abstract description 19
- 238000004891 communication Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 11
- 239000004065 semiconductor Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000005057 refrigeration Methods 0.000 abstract description 5
- 230000001133 acceleration Effects 0.000 description 16
- 241000196324 Embryophyta Species 0.000 description 9
- 230000005611 electricity Effects 0.000 description 5
- 230000035945 sensitivity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000006399 behavior Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 241000519996 Teucrium chamaedrys Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000001338 self-assembly Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Abstract
The utility model belongs to thermostatic control technology field, discloses a kind of constant temperature system of thermostatic equipment, including temperature sensor, refrigerating plant, heating device, control terminal, processing module, judgment module and communication module.Constant temperature system provided by the utility model is monitored the temperature of thermostatic equipment using temperature sensor and is compared with the bound of preset temperature range in real time, is started refrigerating plant when monitoring temperature is higher than the preset temperature range upper limit and is cooled down to thermostatic equipment；Start heating device when monitoring temperature is less than preset temperature range lower limit to heat up to thermostatic equipment.Control terminal can all kinds of running parameters of remotely modifying and control refrigeration or heating, the temperature information as monitoring temperature will be monitored beyond preset temperature range be transmitted to control terminal, grasp real-time condition convenient for staff.
Description
Technical field
The utility model belongs to thermostatic control technology field, and in particular to a kind of constant temperature system of thermostatic equipment.
Background technology
Existing heat-insulation system multiselect uses relay as the major control element of temperature, because relay can directly drive
The load of dynamic 2500W power, it is very extensive to be suitable for small electricity electrical equipment, the application directions such as family, midget plant.And electricity member
The warning piece of device mostly uses buzzer to realize, LED light instruction is heated accordingly or refrigeration work state.
The temperature control system simple structure of this heat-insulation system, it is cheap, and more simply can self assembly.When work,
If temperature is higher or lower than set temperature, buzzer is all by warning reminding, if temperature is less than set temperature lower limit, electric heating material
Material (similar to electric blanket) is initially powered up, and quick release goes out heat and realizes heating, stops heating after reaching set temperature；If temperature
Higher than the set temperature upper limit, then fan start-up operation is stopped cooling after cooling to set temperature, the effect for reaching heat preservation is recycled with this
Fruit.
But there is also following defects for above-mentioned heat-insulation system：1, it cannot achieve the modification function of long-range all kinds of running parameters；
2, it can not realize that remote personnel controls while equipment automatically controls.
Utility model content
In order to solve the above problem of the existing technology, the utility model aim is to provide a kind of perseverance of thermostatic equipment
Warm system.
Technical solution used by the utility model is：A kind of constant temperature system of thermostatic equipment, including：
Temperature sensor, the temperature for monitoring thermostatic equipment；
Refrigerating plant, for cooling down to thermostatic equipment；
Heating device, for heating up to thermostatic equipment；
Control terminal, for being manually entered instruction；
Processing module is connect with above-mentioned temperature sensor, refrigerating plant and heating device respectively；
Communication module is connected with processing module, and with control terminal into row data communication.
Preferably, the constant temperature system further includes the power module for being powered to each component, and power module includes
First relay, the second relay and third relay；The normally open end of first relay connects main AC power, the first relay
Normal-closed end connect spare AC power, the common end of the first relay is separately connected alternating current output end, main dc switch electricity
The common end of the normal-closed end in source and the second relay, the second relay connects spare direct-current switch power supply, spare dc switch electricity
Source connects the normal-closed end of third relay, the normally open end of main direct-current switch power supply connection third relay, the public affairs of third relay
End connection DC output end altogether.
Preferably, protection circuit is equipped between the common end and DC output end of the third relay.
Preferably, the communication module includes wireless transport module and/or wire transmission module, wireless transport module 3G
Module, wire transmission module include connected interchanger and router.
Preferably, the temperature sensor is connected by data collector with processing module.
Preferably, the refrigerating plant is semiconductor chilling plate, and heating device is semiconductor heating plate.
Preferably, the processing module is connected with memory module.
Preferably, the processing module is P89C668 microcontrollers.
Preferably, the constant temperature system further includes the judgment module being connected with processing module, and judgment module is used for temperature
Whether the temperature of Sensor monitoring is compared with the bound of preset temperature range, judge the temperature of thermostatic equipment beyond default
Temperature range.
The beneficial effects of the utility model are：
1, the constant temperature system of thermostatic equipment provided by the utility model monitors thermostatic equipment in real time using temperature sensor
Temperature and be compared with the bound of preset temperature range, when monitoring temperature be higher than the preset temperature range upper limit when start system
Device for cooling cools down to thermostatic equipment；Start heating device when monitoring temperature is less than preset temperature range lower limit to thermostatic equipment liter
Temperature.The macroseism station is efficiently solved due to acceleration transducer mechanical faults caused by ambient temperature change dramatically, makes acceleration
Degree sensor works in stable temperature environment for a long time, reduces all kinds of letters of the macroseism caused by acceleration transducer failure
Number disconnected note and field maintenance number, while the service life of strong-motion instrument will be also improved to the maximum extent.
2, constant temperature system devises long-range control terminal, can all kinds of running parameters of remotely modifying and control refrigeration or heating,
Temperature information as monitoring temperature will be monitored beyond preset temperature range is transmitted to control terminal, is grasped convenient for staff real
When situation.It solves the problems, such as macroseism station remote maintenance, enhances operational support ability and the service of existing earthquake monitoring system
Ability.And can effectively solve the problems, such as the crash of the equipment such as seismic data collector, interchanger, router, realize long-range power-off weight
The functions such as open.The related human cost and funds of macroseism station instrument maintenance can largely be saved.
3, it is divided into double-circuit communication input in power module design to backup each other, all the way power failure another way automatic power；It is internal
Direct current component is designed as two-way direct current Switching Power Supply and backups each other, and enabling spare direct current automatically after main direct-current switch power supply damage opens
Close power supply power supply.Failure caused by solving the damage of main direct-current switch power supply, and design output it is controllable it is powered-down, power up, restart
Etc. operation and controls AC and DC 12V power output interfaces, can solve due to power of alterating and direct current failure or earthquake data acquisition
Signal interruption caused by device and relevant device crash.
Description of the drawings
Fig. 1 is that ES-T type force balance type acceleration transducers divide to sensitivity and temperature data graph of relation.
Fig. 2 is each point of ES-T types force balance type acceleration transducer to zero-temperature relation figure.
Fig. 3 is the structure diagram of the utility model constant temperature system.
Fig. 4 is the structure diagram of the utility model power module.
Fig. 5 is the use schematic diagram of the utility model constant temperature system.
Fig. 6 is the flow diagram of the utility model constant temperature system.
Specific implementation mode
Below in conjunction with the accompanying drawings and specific embodiment does further explaination to the utility model.
The present embodiment provides a kind of constant temperature systems of thermostatic equipment, are applied to the Strong Motion net of seismic system.The earthquake
The acceleration transducer of system uses ES-T type force balance type acceleration transducers, the dynamic range of the sensor to reach 155dB, band
Wide DC to 200Hz alternatively even selects totally 5 grades of the range configuration from ± 0.25G to ± 4G by jumper wire device user.With wideband
Band, high sensitivity, Larger Dynamic range, the features such as transmission function is stable, noise level is low, are suitble to strong-motion earthquake observation.
ES-T type force balance type acceleration transducers are mainly placed in temperature control box by test content, and in sensor and temperature
Difference mounting temperature sensor in case is controlled, temperature increases a measuring point up to+30 DEG C from -30 DEG C every 5 DEG C, and inquires corresponding temperature
The zero of sensor when spending carries out pulse calibration and Sine Calibration to it, obtains related data as shown in Table 1 and Fig. 2 institutes
Each point of the ES-T types force balance type acceleration transducer shown is to zero-temperature relation figure.
1 ES-T type force balance type acceleration transducers of table divide to sensitivity and temperature data relation table
ES-T type force balance type acceleration transducers as shown in Figure 1 point are obtained to sensitivity and temperature according to above-mentioned data
Data relationship curve graph.
It can be obtained by analyzing above,
(1) each point of ES-T types force balance type acceleration transducer reduces between 10 DEG C to 0 DEG C with temperature to zero-point voltage value
And increase, 0 DEG C to 12.5 DEG C vertical point reduces with temperature to zero and is increased, and north and south NS, EW points of thing are dropped to zero with temperature
It is low and reduce.
(2) each point of ES-T types force balance type acceleration transducer to voltage sensibility between -30 DEG C~+30 DEG C with temperature liter
High and increases, sensitivity rate of change is especially maximum in -15 DEG C~+15 DEG C of temperature spots or so change rate 2%~3%.
As can be seen that for temperature factor to parameters such as material property, the elements of the fine measuring instruments such as accelerograph
Influence, especially when ambient temperature change dramatically, acceleration transducer internal mechanical structure can be affected, and be also easy to produce
The problems such as by pendulum or drift, it is therefore desirable to acceleration transducer be made to be in isoperibol.
As shown in figure 3, the present embodiment provides a kind of constant temperature system of thermostatic equipment, including temperature sensor, refrigerating plant,
Heating device, processing module, communication module, memory module, judgment module and control terminal, temperature sensor, refrigerating plant, heating
Device, communication module, memory module and judgment module are electrically connected with processing module respectively, and communication module and control terminal are into line number
According to communication.
Wherein, temperature sensor is used to monitor the temperature of thermostatic equipment, and PT1000 temperature sensing can be used in temperature sensor
The temperature acquisition period of device, temperature sensor is that acquisition each second is once primary adjustable to acquisition per hour.Temperature sensor is logical
Data collector is crossed with processing module to be connected.
Refrigerating plant is for cooling down to thermostatic equipment, and heating device is for heating up to thermostatic equipment, refrigeration dress
It sets and semiconductor chilling plate can be used, semiconductor heating plate can be used in heating device.Using semiconductor refrigerating, heating realize refrigeration or
Person avoids having an impact temperature sensor while heating.
Communication module includes wireless transport module and wire transmission module, and wireless transport module is 3G module, wire transmission
Module includes connected interchanger and router.The wireless 3G data transmissions moulds of SIM5216E of SIMCOM companies can be used in 3G module
Block.
The non-volatile serial EEPROM memory AT24C512 (512kbit) of electric erasable can be used in memory module.The device
With two-wire serial interface, bidirectional data transfers, hardware data write-protect, eight byte page WriteModes and independent timing write cycle time
The features such as (maximum 10ms), can within the scope of 1.8~5.5V wide powers reliably working.Its chip remains able to preserve after a power failure
The data stored, it is ensured that 100000 wiping/write cycle times and 10 years effective preservation data.
P89C668 microcontrollers can be used in processing module.Communication interface is equipped between communication module and processing module, communication connects
Mouth selects the MAX202E chips of positive and negative 15kV electrostatic shocks protection to complete TTL and RS232 level conversions.Refrigerating plant and heating
The output power of device is controlled by analog-digital chip TLC5615.The A/D conversions of temperature monitoring, which are selected, improves flash technology
The LinCMOS 8-bit High-Speed analog-digital converter TLC549 of cash can make low power consumption integrated circuit a few μ s in entire temperature range complete
It is converted at A/D.
For control terminal for being manually entered instruction, control terminal is set to platform net center, control terminal include respectively or uniformly with lead to
Module is believed into the alarm module, display module and input module of row data communication, and staff can remotely be referred to by input module
It enables the operating mode of modification control constant temperature system switch in automatic operation mode and manual working pattern, and changes automatic work
The upper and lower bound in preset temperature range in pattern.
In automatic operation mode, judgment module is by the bound of the temperature of temperature sensor monitors and preset temperature range
It is compared, judges whether the temperature of thermostatic equipment exceeds preset temperature range, the monitoring temperature inside thermostatic equipment is higher than pre-
If processing module starts refrigerating plant and cools down to thermostatic equipment when temperature upper limit；At when monitoring temperature is less than preset temperature lower limit
It manages module control and starts heating device to thermostatic equipment heating.
In manual working pattern, judgment module is by the bound of the temperature of temperature sensor monitors and preset temperature range
It is compared, whether judgement temperature exceeds preset temperature range, and alarm signal is sent when monitoring temperature is higher than the preset temperature upper limit
Control terminal is ceased, staff determines whether to start refrigerating plant and returns to control information by input module；When monitoring temperature
Warning message is sent when degree is less than preset temperature lower limit to control terminal, staff determines whether to start heating device and pass through
Input module returns to control information.
Constant temperature system further includes the power module for being powered to above-mentioned each component, since power supply failure will
Data outage is directly contributed, and can all be had every year during the station is repaired several times due to exchange poor electric contact, UPS damages
It ruins, the signal interruption caused by reasons such as direct current 12V power supplys damage, so power module has exchange input Dual-path backup and inside
The function of direct current Dual-path backup.
As shown in figure 4, power module includes the first relay, the second relay and third relay；First relay
Normally open end connects main AC power, and the normal-closed end of the first relay connects spare AC power, the common end point of the first relay
Not Lian Jie alternating current output end, main direct-current switch power supply and the second relay normal-closed end, the second relay common end connection
Spare direct-current switch power supply, the normal-closed end of spare direct-current switch power supply connection third relay, main direct-current switch power supply connection the
The common end of the normally open end of three relays, third relay connects DC output end.
Equipment can access two-way AC power when work：It is main AC power all the way, another way is spare AC power.It is main
Ups power can be used in AC power, and alternating current or sun-generated electric power can be used in spare AC power.Main AC power is linked into
The coil of one relay and normally open end, spare AC power are linked into the normal-closed end of the first relay.When main AC power is normal
When relay be attracted normally open end be connected with common end, and when main AC power powers off the first relay discharge normal-closed end with it is public
End conducting, i.e., spare AC power automatically access in equipment.
Alternating current into the first relay is respectively connected to main direct-current switch power supply, the normal-closed end of the second relay and output
To alternating current output end.Main direct-current switch power supply exports direct current 12V to the second relay and third relay when normal work
Coil pin, the second relay and third relay are all that common end is connected with normally open end, i.e., spare direct-current switch power supply and institute
It is physically isolated completely in circuit and output direct current 12V is connected by third relay normally open end in main direct-current switch power supply with common end
To DC output end.When main direct-current switch power supply normally cannot export direct current, the second relay and third relay are
Common end is connected with normal-closed end, and it is direct current that spare direct-current switch power supply, which is linked into circuit and replaces the work of main direct-current switch power supply,
Output end provides stable 12V DC electricity.
Protection circuit is equipped between the common end and DC output end of third relay.It includes one to protect circuit
50V2000uF capacitances and a 0.1uF capacity will not have any impact to back end DC output when DC power supply switches.
WJ176 contact relays can be used in first relay, the second relay and third relay, and release is attracted
Time is respectively less than 15ms.
As shown in figure 5, the technical parameter of this constant temperature system is：
Input voltage：Exchange 200~240V；
System operating temperatures range：- 30 DEG C~+50 DEG C；
System works thermostat temperature range-controllable system at 0 DEG C~+30 DEG C；
Export DC voltage：11.5~12.5V；
Export alternating current 220V single port supply current 1A (220W)；
Export direct current 12V single port supply current 2A (24W)；
Individually controllable alternating current 220V delivery outlet 4；
Individually controllable direct current 12V delivery outlets 2；
AC-DC conversion efficiency is more than 90%；
The machine control section power consumption is less than 2.5W, and Overall Power Consumption is less than 20W；
Wireless working frequency：Upper 1920~1980MHz of behavior；Lower behavior：2110~2170MHz.
Ensure that it is operated within the scope of stationary temperature except acceleration transducer is placed in constant temperature cover, the correlation of the macroseism station
Equipment power supply is connected on constant temperature system controlled source output interface, when wireline equipment (such as interchanger, router, converter)
It is damaged when either crashing and restarting or switching for related wireline equipment is controlled by processing module.
As shown in fig. 6, after constant temperature system is powered, this system running parameter and station addresses are read first, then to 3G numbers
It is initialized according to transmission module SIM5216E, it is text patterns that short message mode, which is such as arranged, and central server IP address is arranged, if
Set transmission rate etc..Then whether microcontroller circling measurment communication module receives new message, when there is new message to transmit, executes string
Mouth terminal server：Instruction short message is read, and judges whether address number is that the machine is identical, whether password is correct, if being consistent
Corresponding operational order is executed, the code information of each output port of power source of this terminal is returned after being finished, then deletes and has read
The short message taken.
The utility model is not limited to above-mentioned optional embodiment, anyone can obtain under the enlightenment of the utility model
Go out other various forms of products.Above-mentioned specific implementation mode should not be understood the limitation of pairs of the scope of protection of the utility model,
The scope of protection of the utility model should be subject to be defined in claims, and specification can be used for explaining that right is wanted
Seek book.
Claims (9)
1. a kind of constant temperature system of thermostatic equipment, which is characterized in that including：
Temperature sensor, the temperature for monitoring thermostatic equipment；
Refrigerating plant, for cooling down to thermostatic equipment；
Heating device, for heating up to thermostatic equipment；
Control terminal, for being manually entered instruction；
Processing module is connect with above-mentioned temperature sensor, refrigerating plant and heating device respectively；
Communication module is connected with processing module, and with control terminal into row data communication.
2. constant temperature system according to claim 1, it is characterised in that：The constant temperature system further include for each component into
The power module of row power supply, power module include the first relay, the second relay and third relay；First relay it is normal
Beginning connects main AC power, and the normal-closed end of the first relay connects spare AC power, the common end difference of the first relay
The normal-closed end of alternating current output end, main direct-current switch power supply and the second relay is connected, the common end connection of the second relay is standby
With direct-current switch power supply, the normal-closed end of spare direct-current switch power supply connection third relay, main direct-current switch power supply connects third
The common end of the normally open end of relay, third relay connects DC output end.
3. constant temperature system according to claim 2, it is characterised in that：The common end of the third relay and direct current are defeated
Protection circuit is equipped between outlet.
4. according to any constant temperature systems of claim 1-3, it is characterised in that：The communication module includes wireless transmission mould
Block and/or wire transmission module, wireless transport module are 3G module, and wire transmission module includes connected interchanger and routing
Device.
5. according to any constant temperature systems of claim 1-3, it is characterised in that：The temperature sensor is acquired by data
Device is connected with processing module.
6. according to any constant temperature systems of claim 1-3, it is characterised in that：The refrigerating plant is semiconductor refrigerating
Piece, heating device are semiconductor heating plate.
7. according to any constant temperature systems of claim 1-3, it is characterised in that：The processing module is connected with storage mould
Block.
8. according to any constant temperature systems of claim 1-3, it is characterised in that：The processing module is P89C668 monolithics
Machine.
9. according to any constant temperature systems of claim 1-3, it is characterised in that：The constant temperature system further includes and handles mould
The connected judgment module of block, judgment module are used to carry out the bound of the temperature of temperature sensor monitors and preset temperature range
Compare, judges whether the temperature of thermostatic equipment exceeds preset temperature range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820378932.3U CN207704297U (en) | 2018-03-20 | 2018-03-20 | A kind of constant temperature system of thermostatic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820378932.3U CN207704297U (en) | 2018-03-20 | 2018-03-20 | A kind of constant temperature system of thermostatic equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207704297U true CN207704297U (en) | 2018-08-07 |
Family
ID=63031547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820378932.3U Expired - Fee Related CN207704297U (en) | 2018-03-20 | 2018-03-20 | A kind of constant temperature system of thermostatic equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207704297U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108268070A (en) * | 2018-03-20 | 2018-07-10 | 江苏省地震局 | A kind of thermostatic control system of thermostatic equipment |
| CN114397927A (en) * | 2021-12-21 | 2022-04-26 | 无锡新辉龙科技有限公司 | Heater adjusting method and handset |
-
2018
- 2018-03-20 CN CN201820378932.3U patent/CN207704297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108268070A (en) * | 2018-03-20 | 2018-07-10 | 江苏省地震局 | A kind of thermostatic control system of thermostatic equipment |
| CN114397927A (en) * | 2021-12-21 | 2022-04-26 | 无锡新辉龙科技有限公司 | Heater adjusting method and handset |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105468127B (en) | A kind of real-time data acquisition system and its power failure data storage circuit, method | |
| CN207704297U (en) | A kind of constant temperature system of thermostatic equipment | |
| CN108268070A (en) | A kind of thermostatic control system of thermostatic equipment | |
| CN104685900A (en) | System for remotely monitoring household appliance | |
| CN108332060B (en) | Intelligent monitoring system for pipeline water leakage | |
| CN104122508B (en) | Online monitoring method for backup power supply system of intelligent power distribution terminal | |
| CN104930668A (en) | Cluster control method for computer room precise air conditioners | |
| CN204390021U (en) | Office's comprehensive intelligent control system | |
| CN101782438A (en) | Wireless temperature monitoring system device of overheating of electrical device | |
| CN203554063U (en) | Railway crossing signal equipment power supply cabinet | |
| CN209593100U (en) | A kind of remote controlled Intelligent reclosing switching device | |
| CN208723621U (en) | A kind of universal monitoring system of base station switch power supply | |
| CN201364208Y (en) | Excessive heating wireless temperature monitoring system device of electrical apparatuses | |
| CN107203180B (en) | A kind of cooling tower monitoring method, equipment and system | |
| CN104949259B (en) | Air-conditioner control system | |
| CN203931134U (en) | A kind of high-tension switch cabinet intelligent radio temp measuring system based on ZigBee technology | |
| CN214409153U (en) | Operating state monitor for oil fume purifier | |
| CN109442676A (en) | A kind of automatic machine room air-conditioning power-off self-starting device | |
| CN108415347A (en) | A kind of energy consumption integrated control system | |
| CN109188040B (en) | Multi-mode intelligent ammeter | |
| CN202758259U (en) | Heating device of digital detecting instrument | |
| CN103292384B (en) | Make-and-break time area-method power-supply metering system | |
| CN207300451U (en) | A kind of accumulator internal resistance temperature-measuring module | |
| CN206278935U (en) | A kind of tangible control and the intelligent water purifier equipment of remote control | |
| CN109188037A (en) | Intelligent electric meter system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180807 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |