CN208751734U - A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor - Google Patents

A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor Download PDF

Info

Publication number
CN208751734U
CN208751734U CN201821053128.4U CN201821053128U CN208751734U CN 208751734 U CN208751734 U CN 208751734U CN 201821053128 U CN201821053128 U CN 201821053128U CN 208751734 U CN208751734 U CN 208751734U
Authority
CN
China
Prior art keywords
temperature measurement
steel sheet
passive
silicon steel
fastener
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
Application number
CN201821053128.4U
Other languages
Chinese (zh)
Inventor
邢思玮
张华�
阎毓杰
王楠
王红军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
719th Research Institute of CSIC
Original Assignee
719th Research Institute of CSIC
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 719th Research Institute of CSIC filed Critical 719th Research Institute of CSIC
Priority to CN201821053128.4U priority Critical patent/CN208751734U/en
Application granted granted Critical
Publication of CN208751734U publication Critical patent/CN208751734U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Landscapes

  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

The utility model discloses a kind of quickly dismantled passive and wireless inductions to take temperature measurement sensor.It can be realized the fast assembling-disassembling that passive and wireless induction takes temperature measurement sensor using the utility model, alleviate the weight of temperature sensor, greatly improve the reliability and fastness and maintenanceability of temperature sensor installation.The utility model locks silicon steel sheet using ratchet shaft, camshaft and Fastener, and structure is simple and locking effect is good.Silicon steel sheet in sensor is without structural damage, reusable, reduction maintenance cost.It is easy to operate when sensor installation and replacement, tool, direct removal sensor can be not necessarily to.The utility model provides the efficient way of contact for thermometric chip, and reduction heat distributes the influence to temperature measurement accuracy, has been truly realized the feature that installation is simple, thermometric is safe and reliable, temperature measurement is accurate, maintenance is convenient.

Description

A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor
Technical field
The utility model relates to sensor structure technical fields, and in particular to one kind is applied to power industry passive and wireless and surveys The fast mounting-dismounting formula sensor in warm field.
Background technique
Power equipment is chronically at the operating status of high voltage, high current and high load capacity, and electric connecting point easily occurs Overheating is even burnt, and leads to accident.In recent years, a lot of switch overheat accidents have occurred in power plant and substation, has caused fire The power outage of calamity and large area, solving switch problems of excessive heat is the key that prevent such accident to occur, and realizes temperature online prison Survey is to guarantee the important means of high-tension apparatus safe operation.And currently used switch cabinet temperature monitor means respectively have certain lack It falls into: the problems such as active (battery) wireless temperature measurement need to irregularly have a power failure to replace battery, and battery deposits hidden peril of explosion;Infrared measurement of temperature is A kind of contactless temperature measurement means, but precision and the degree of automation are unable to satisfy actual requirement;Optical fiber temperature-measurement need to be used up It is fine to be connected with extraneous equipment, belong to wired measuring, there are security risks.
Therefore, domestic electrical industry temperature sensing means turn from active, wired high risk means to passive, wireless direction Become.It is a kind of effective passive and wireless monitoring solution that wherein induction, which takes electricity,.However, existing induction takes electric transducer to exist It in installation process, needs for silicon steel sheet to be looped around on the primary equipment for being connected with alternating current, generally use bolt fastening or passes through The mode of frictional force fastening is fixed, and both the above mode has more obvious drawback.Using the silicon steel of bolt fastening Piece can leave impression by bolt presses rear surface, affect the secondary use of silicon steel sheet, while the metal at impression easily produces It gets rusty erosion, affects the structural strength of silicon steel sheet, temperature sensor may be made to loosen landing, safety is caused inside controller switching equipment Hidden danger.Meanwhile it is also extremely inconvenient using installation tools such as screwdrivers in narrow assembly space inside the controller switching equipment;By rubbing The silicon steel sheet for wiping power fastening need to surround multi-turn, be fixed by the frictional force of silicon steel sheet and induction coil skeleton, this method is not It is only difficult to install, it needs to overcome the circular silicon steel sheet of frictional resistance multiple in narrow space, while also not can guarantee silicon steel sheet Fastening effect, need additional fixation, increase sensor weight and tool structure complexity.
Utility model content
In view of this, the present invention provides a kind of quickly dismantled passive and wireless inductions to take temperature measurement sensor, energy It enough realizes that passive and wireless induction takes the fast assembling-disassembling of temperature measurement sensor, alleviates the weight of temperature sensor, greatly improve The reliability and fastness and maintenanceability of temperature sensor installation.
The quickly dismantled passive and wireless induction of the utility model takes temperature measurement sensor, including induction that electrician is taken to fill and survey Warm sensory package, the induction take electrician's dress including shell, silicon steel sheet and are mounted on the intracorporal induction coil of shell and silicon steel sheet Locking device, the silicon steel sheet locking device include ratchet shaft, camshaft and Fastener;Wherein, Fastener is located at induction coil Between ratchet shaft, Fastener is set close to the side of ratchet shaft there are two " v " shaped reed, and the reed of " V " font Sharp-crested contradicts on ratchet shaft;Cam-engaged lock on camshaft of the ratchet by the ratchet shaft other side is arranged on ratchet shaft Tightly;One end of the silicon steel sheet is fixed between Fastener and housing bottom surface, and the other end penetrates from the sharp-crested of " V " font reed Fastener simultaneously enters inside induction coil, is pierced by rear side of the shell, in the guide groove of external wraparound case top, and from clamping It is pierced by between the reed and ratchet shaft of part, silicon steel sheet is clamped part reed and is against on ratchet shaft.
Further, the Fastener is equipped with 3 slots, and one end of silicon steel sheet passes through first slot quilt of Fastener bottom It is pressed on housing bottom, the other end is placed through time second slot of lower section at the sharp-crested of reed, from the sharp-crested of reed It penetrates after Fastener is located in the middle third slot, into inside induction coil.
Further, the middle section of the ratchet shaft is cased with anti-slip rubber.
Further, the camshaft is installed inside housings by bracket, and camshaft both ends are equipped with and spine on ratchet shaft Take turns the cam of engagement;There are three springs for set on camshaft axis body, and two of them are reduction torsion spring, are located at two cams and branch Between frame, for providing the torque needed for resetting;Another is pressure spring, between side cam and housing sidewall, for multiple Position releases the camshaft after engagement, and camshaft is made to restore to engage with ratchet shaft.
Further, the temperature transducers component is mounted on case top, including PCB, control and radio-frequency module, thermometric core Piece and heat-conducting plate, wherein control and radio-frequency module, thermometric chip are mounted on the front of PCB, and silicone insulation is posted at the back side of PCB Pad;Heat-conducting plate is fixed on above thermometric chip by heat-conducting glue, and is passed through the fluting that case top is reserved and directly contacted measured object Body surface face.
Further, the heat-conducting plate is copper alloy sheet.
Further, the Fastener is the molding of spring steel material one-time-concreting.
Further, the shell includes bottom case and top shell, posts anti-skidding adhesive tape on the outside of the top shell.
The utility model has the advantages that
The quickly dismantled induction of the utility model takes temperature measurement sensor suitable loaded on busbar, the cable etc. in power equipment It is connected with the primary equipment of alternating current, by the retaining mechanism of itself, enormously simplifies operation difficulty when installation and replacement And the efficient way of contact is provided for thermometric chip, it reduces heat and distributes the influence to temperature measurement accuracy.For needing to change maintenance The case where, tool, direct removal sensor can be not necessarily to.Silicon steel sheet in sensor is without structural damage, reusable, reduction dimension Protect cost.It has been truly realized the feature that installation is simple, thermometric is safe and reliable, temperature measurement is accurate, maintenance is convenient.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model sensor;
Fig. 2 (a), Fig. 2 (b) are that the utility model induction takes electrician's assembling structure schematic diagram;
Fig. 3 (a), Fig. 3 (b) are that induction takes electrician to fill side view partial sectional view;
Fig. 4 (a), Fig. 4 (b) are temperature transducers component structure diagram.
Wherein, 1- induction takes electrician to fill;2- temperature transducers component;3- silicon steel sheet;4- ratchet shaft;5- camshaft;6- clamping Part;7- induction coil;8- bottom case;9- top shell;10- control and radio-frequency module;11- heat-conducting plate;12-PCB;13- silicone insulation pad; 14- thermometric chip.
Specific embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
The utility model provides a kind of quickly dismantled passive and wireless induction and temperature measurement sensor, including induction is taken to take electricity Tooling 1 and temperature transducers component 2, as shown in Figure 1.
As shown in Fig. 2 (a), Fig. 2 (b), Fig. 3 (a), Fig. 3 (b), induction takes electrician to fill 1 whole rectangularity, comprising: shell Body, silicon steel sheet 3, and the induction coil 7 and silicon steel sheet locking device that are mounted in bottom case 8;Wherein shell includes bottom case 8 and top Shell 9, bottom case 8 and top shell 9 are rectangle structure, the stepped groove for having shape mutually to agree between top shell 9 and bottom case 8, stepped groove Top shell 9 and the relative position of bottom case 8 are fixed, bottom case 8 and three buckles of 9 side of top shell are responsible for blocking top shell 9 and bottom case 8 Tightly;Top shell 9 is equipped with the rectangular fluting being adapted to temperature transducers component heat-conducting plate 11.It is equal in side, the top and bottom of shell It is provided with elongated guide groove, convenient for the installation of silicon steel sheet.Enclosure interior has block, bracket convenient for induction coil, silicon steel sheet locking dress Set the installation with temperature transducers component.Anti-skidding adhesive tape is posted on the outside of top shell.Induction coil 7 is fixed on the chamber of bottom case 8 by block In body, it is connect by conducting wire with the PCB 12 in temperature transducers component 2;Silicon steel sheet locking device includes ratchet shaft 4, camshaft 5 With Fastener 6;Wherein, between induction coil 7 and ratchet shaft 4, Fastener 6 is equipped with Fastener 6 close to the side of ratchet shaft 4 Two " v " shaped reeds, and the sharp-crested of the reed of " V " font contradicts on ratchet shaft;Ratchet on ratchet shaft 4 is by being arranged Cam-engaged locking on the camshaft 5 of the ratchet shaft other side.
Silicon steel sheet is fixed inside housings and is pierced by shell after induction coil, around once setting for alternating current is connected with Enclosure interior is returned to after standby to be connected with starting point, forms closed loop.Specific: Fastener 6 is by 8 clamping fixed of top shell 9 and bottom case, card Tight part 6 is equipped with 3 slots, and first slot of bottom cooperates bottom case, the starting point of one end for fixing silicon steel sheet;The of lower section Two slots be used to that one end to be made to be compacted after silicon steel sheet at the sharp-crested of reed, while can also increase silicon steel sheet and Fastener 6 frictional force reinforces the fixed effect of silicon steel sheet;Third slot among Fastener 6 can make to be worn by the sharp-crested of reed The silicon steel sheet entered is directly through Fastener 6, into inside induction coil, bottom case 8 is then pierced by, in leading for external wraparound top shell 9 It is pierced by into slot, and between 6 reed of Fastener and ratchet shaft 4, silicon steel sheet is clamped 6 reed of part and is tightly against on ratchet shaft 4; 3 redundance of silicon steel sheet is pierced by shell by the guide groove of bottom case 8.
The middle section of ratchet shaft 4 is cased with anti-slip rubber, to increase the frictional force between silicon steel sheet and ratchet shaft;Anti-slip rubber Respectively there are a ratchet in two sides, respectively there is an axle sleeve between ratchet and bottom case inner wall;Ratchet shaft 4 is fixed on by top shell 9 and 8 groups of bottom case At mounting hole in, axial limiting is carried out by the axle sleeves of two sides.The cam at 5 both ends of camshaft and the ratchet phase on ratchet shaft 4 Engagement, prevents ratchet shaft from inverting.There are three springs for set on camshaft axis body, and two of them are reduction torsion spring, are located at two cams Between bracket.One is pressure spring, between 8 inner wall of side cam and bottom case;There is cylindrical button in one end of camshaft. Camshaft 5 is fixed in the mounting hole being made of top shell 9 and bottom case 8 and by the bracket support and limit in bottom case 8.
Temperature transducers component 2 is installed in top shell 9, shown in the structure of temperature transducers component 2 such as Fig. 4 (a), Fig. 4 (b), main body For PCB (printed circuit board) 12, silicone insulation pad 13 is posted at 12 back side PCB, prevents PCB 12 from contacting with induction coil 7.Control System and radio-frequency module 10, thermometric chip 14 are in the front PCB.Heat-conducting plate 11 is fixed on 14 top of thermometric chip by heat-conducting glue. 11 material of heat-conducting plate is the good conductor of thermal energy, selects copper alloy sheet in the utility model.The PCB 12 is fixed on top shell 9 On, heat-conducting plate 11 passes through the rectangular fluting in top shell 9, directly contact testee surface, and the temperature of testee is passed to survey Digitized temperature information is sent to by warm chip 14, thermometric chip 14 after temperature transition, by control and radio-frequency module 10 Control terminal.
Specifically, top shell 9 and bottom case 8 are the shell of temperature transducers component, its internal component is protected, induction coil 7 exists In 8 cavity of bottom case, pass through top shell 9 and the pressing fastening of temperature transducers component 2.3 one end of silicon steel sheet passes through Fastener 6 and bottom case 8 Clamping is assembled, and is passed through among the reed of Fastener 6, and then pass through induction coil 7, bottom case 8 is pierced by, surround and be connected in outside After the primary equipment of alternating current, into the guide groove of top shell 9;When silicon steel sheet 3 passes through Fastener 6 and ratchet shaft 4 is intermediate, Rubber on ratchet shaft is rotated by frictional force, and silicon steel sheet 3 can pass through, and is pierced by from the guide groove of bottom case 8.With Silicon steel sheet gradually tighten, be arranged in the outside of top shell 9, square opening two sides at anti-skidding adhesive tape and silicon steel sheet it is circular one Interaction force can be generated between secondary device, and then generates enough frictional force to fix temperature transducer.It is logical after silicon steel sheet 3 is in place The interaction force that Fastener 6 is generated with ratchet shaft 4 due to mutual extrusion is crossed to fix;The reed of Fastener withstands silicon steel sheet 3 Starting position, contact it with the silicon steel sheet 3 for being again introduced into shell, thus make silicon steel sheet 3 formed closed loop.
When ratchet shaft 4 rotates, the cam that ratchet will drive on camshaft 5 does circumferential movement, and the torsional spring on camshaft 5 The torque needed for resetting is provided for each circumferential movement, when guaranteeing that ratchet shaft 4 stops operating, cam is at correct position It sets, preventing ratchet shaft 4 from rotating backward causes silicon steel sheet 3 to loosen.In silicon steel sheet locking, ratchet shaft 4 remains static, and has Counter-rotational trend.Cam and ratchet gear teeth meshing on camshaft 5, cam are contacted with 8 side wall of bottom case.8 side wall of bottom case rises To position-limiting action, rotating backward for cam is limited, and then limits rotating backward for ratchet shaft 4, ensure that Fastener 6 and spine The reliability of the fixed silicon steel sheet of wheel shaft 4.The cylindrical button for pressing 5 one end of camshaft can make entire camshaft generate axial move Dynamic, cam is staggered with ratchet, and the failure of engaging of cam and the ratchet gear teeth, camshaft 5 loses the position-limiting action to ratchet shaft 4, spine Wheel shaft 4 can be reversed rotation, and silicon steel sheet can be extracted at this time.After the cylindrical button for unclamping 5 one end of camshaft, camshaft 5 It is resetted by the active force that pressure spring provides.
Wherein, Fastener 6 is the molding of spring steel material one-time-concreting, to guarantee the toughness of design of part intensity and reed.
The axis body and ratchet of ratchet shaft 4 are the molding of high-strength corrosion-resisting metal material one-time-concreting, ensure that design of part Intensity.
The axis body and cam of camshaft 5 are high-strength corrosion-resisting metal material, and axis body is first inserted in two resets in assembly Torsional spring, then the cam of two sides is fixed by hot pressing dress with axis body.
Silicon steel sheet will induce the magnetic opposite with magnetic direction in air as a kind of higher magnetic conductive media of magnetic conductivity , the magnetic flux of variation is provided to induction coil;Induction coil by electromagnetic induction, converts the alternating magnetic field in silicon steel sheet to Alternating current output, provides energy for temperature transducers component.
The utility model temperature measuring equipment enormously simplifies operation when installation and replacement by the retaining mechanism of itself Difficulty simultaneously provides the efficient way of contact for thermometric chip, reduces heat and distributes the influence to temperature measurement accuracy.For needing to change The case where maintenance, can be not necessarily to tool, direct removal sensor.Silicon steel sheet in sensor is without structural damage, reusable, drop Low-maintenance cost.
In conclusion the above is only the preferred embodiments of the present utility model only, it is not intended to limit the utility model Protection scope.Within the spirit and principle of the utility model, any modification, equivalent replacement, improvement and so on should all wrap Containing being within the protection scope of the utility model.

Claims (8)

1. a kind of quickly dismantled passive and wireless induction takes temperature measurement sensor, including induction that electrician is taken to fill (1) and temperature transducers Component (2), it is described induction take electrician fill (1) include shell, silicon steel sheet (3) and be mounted on the intracorporal induction coil of shell (7) and Silicon steel sheet locking device, which is characterized in that the silicon steel sheet locking device includes ratchet shaft (4), camshaft (5) and Fastener (6);Wherein, Fastener (6) is located between induction coil (7) and ratchet shaft (4), side of the Fastener (6) close to ratchet shaft (4) If there are two " v " shaped reed, and the sharp-crested of the reed of " V " font contradicts on ratchet shaft (4);On ratchet shaft (4) Ratchet is locked by the cam-engaged being arranged on the camshaft (5) of the ratchet shaft other side;One end of the silicon steel sheet (3) is fixed on Between Fastener (6) and housing bottom surface, the other end penetrates Fastener (6) from the sharp-crested of " V " font reed and enters the line of induction Enclose (7) it is internal, from shell on rear side of be pierced by, in the guide groove of external wraparound case top, and from the reed of Fastener (6) and spine Wheel shaft is pierced by between (4), and silicon steel sheet is clamped part (6) reed and is against on ratchet shaft (4).
2. quickly dismantled passive and wireless induction as described in claim 1 takes temperature measurement sensor, which is characterized in that the card Tight part (6) is equipped with 3 slots, and one end of silicon steel sheet is pressed in housing bottom by first slot of Fastener (6) bottom, separately One end is placed through time second slot of lower section at the sharp-crested of reed, and Fastener (6) is penetrated from the sharp-crested of reed and is located at It is internal into induction coil (7) after intermediate third slot.
3. quickly dismantled passive and wireless induction as described in claim 1 takes temperature measurement sensor, which is characterized in that the spine The middle section of wheel shaft (4) is cased with anti-slip rubber.
4. quickly dismantled passive and wireless induction as described in claim 1 takes temperature measurement sensor, which is characterized in that described convex Wheel shaft is installed inside housings by bracket, and camshaft both ends are equipped with the cam engaged with ratchet on ratchet shaft;Camshaft axis body There are three springs for upper set, and two of them are reduction torsion spring, are located at two between cam and bracket, for providing needed for reset Torque;Another is pressure spring, between side cam and housing sidewall, for resetting the camshaft after releasing engagement, is made Camshaft is engaged with ratchet shaft recovery.
5. quickly dismantled passive and wireless induction as described in claim 1 takes temperature measurement sensor, which is characterized in that the survey Warm sensory package (2) is mounted on case top, including PCB (12), control and radio-frequency module (10), thermometric chip (14) and thermally conductive Plate (11), wherein control and radio-frequency module (10), thermometric chip (14) are mounted on the fronts of (12) PCB, the back side of PCB (12) Post silicone insulation pad (13);Heat-conducting plate (11) is fixed on above thermometric chip (14) by heat-conducting glue, and passes through case top Reserved fluting directly contacts testee surface.
6. quickly dismantled passive and wireless induction as claimed in claim 5 takes temperature measurement sensor, which is characterized in that described to lead Hot plate (11) is copper alloy sheet.
7. quickly dismantled passive and wireless induction as described in claim 1 takes temperature measurement sensor, which is characterized in that the card Tight part (6) is the molding of spring steel material one-time-concreting.
8. quickly dismantled passive and wireless induction as described in claim 1 takes temperature measurement sensor, which is characterized in that the shell Body includes bottom case (8) and top shell (9), posts anti-skidding adhesive tape on the outside of the top shell (9).
CN201821053128.4U 2018-07-04 2018-07-04 A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor Expired - Fee Related CN208751734U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201821053128.4U CN208751734U (en) 2018-07-04 2018-07-04 A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201821053128.4U CN208751734U (en) 2018-07-04 2018-07-04 A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor

Publications (1)

Publication Number Publication Date
CN208751734U true CN208751734U (en) 2019-04-16

Family

ID=66055278

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821053128.4U Expired - Fee Related CN208751734U (en) 2018-07-04 2018-07-04 A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor

Country Status (1)

Country Link
CN (1) CN208751734U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211434A (en) * 2018-07-04 2019-01-15 中国船舶重工集团公司第七〇九研究所 A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor
CN110955303A (en) * 2019-11-14 2020-04-03 贵州电网有限责任公司 USB port locking device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109211434A (en) * 2018-07-04 2019-01-15 中国船舶重工集团公司第七〇九研究所 A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor
CN109211434B (en) * 2018-07-04 2024-04-30 中国船舶重工集团公司第七一九研究所 Quick assembly disassembly type passive wireless induction electric temperature measurement sensor
CN110955303A (en) * 2019-11-14 2020-04-03 贵州电网有限责任公司 USB port locking device

Similar Documents

Publication Publication Date Title
CN109211434A (en) A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor
CN208751734U (en) A kind of quickly dismantled passive and wireless induction takes temperature measurement sensor
CN206291986U (en) Snap-in force detecting tool
JP2022167831A (en) Temperature detection assembly and charging socket device
CN201285333Y (en) Reusable double temperature measurement screw cap type temperature indicator
CN209069432U (en) A kind of cable installing type wireless temperature-measuring terminal
US20160003872A1 (en) Low Profile Current Measurement Connector and Use
CN207426063U (en) Lithium battery temperature sensor detector
CN218381324U (en) Temperature measuring sensor
CN209342264U (en) A kind of moving contact passive and wireless temperature transducer based on spring type installation
CN204721626U (en) A kind of mounting bracket of thermal sensitive ceramics heating element and thermal sensitive ceramics heating element
CN110887577A (en) Dual-redundancy platinum resistance wire temperature sensor and preparation method thereof
CN104006893A (en) Temperature sensor with multi-protection function
CN215262112U (en) Wireless temperature measuring device of high-voltage power distribution cabinet
CN203323900U (en) Electromagnetic energy collection type wireless temperature measuring module
CN110850339A (en) Power transformer detection system
CN207763838U (en) Passive and wireless on-line temperature monitoring instrument
CN206349302U (en) A kind of push rod detent mechanism of temperature controller
CN115240966A (en) Mutual inductor assembly and circuit breaker
CN210803673U (en) Electric connection piece integrated sensor for intelligent motor
CN113433451A (en) Relay zero-crossing switch and calibration method thereof
CN218349523U (en) Wireless temperature and humidity sensor
CN213545940U (en) Busbar with built-in induction device
CN220893635U (en) Detection device and measurement apparatus
Ling et al. Real-time temperature monitoring system for High Voltage Switchgear based on infrared wireless transmission

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20190416

Termination date: 20190704