CN204783117U - Mining wireless inductive switch that is close - Google Patents

Mining wireless inductive switch that is close Download PDF

Info

Publication number
CN204783117U
CN204783117U CN201520492404.7U CN201520492404U CN204783117U CN 204783117 U CN204783117 U CN 204783117U CN 201520492404 U CN201520492404 U CN 201520492404U CN 204783117 U CN204783117 U CN 204783117U
Authority
CN
China
Prior art keywords
module
power
electrically connected
resistance
main control
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
CN201520492404.7U
Other languages
Chinese (zh)
Inventor
包建军
霍振龙
谭达克
徐辉霞
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.)
Tiandi Changzhou Automation Co Ltd
Changzhou Research Institute of China Coal Technology and Engineering Group Corp
Original Assignee
Tiandi Changzhou Automation Co Ltd
Changzhou Research Institute of China Coal Technology and Engineering Group Corp
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 Tiandi Changzhou Automation Co Ltd, Changzhou Research Institute of China Coal Technology and Engineering Group Corp filed Critical Tiandi Changzhou Automation Co Ltd
Priority to CN201520492404.7U priority Critical patent/CN204783117U/en
Application granted granted Critical
Publication of CN204783117U publication Critical patent/CN204783117U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40Control techniques providing energy savings, e.g. smart controller or presence detection

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Abstract

The utility model provides a mining wireless inductive switch that is close, include power conversion module, wireless communication module, host system, executable module, set up the module and instruct the lamp module piece, the voltage conversion module becomes the dc operation power with ac inversion, receipt mine staff hand -carried when wireless communication module used personel locator beacon knowledge card information and real time transport give host system, on -off control is correspondingly carried out through the executable module to the power of controlled electrical apparatus load to information that host system handle to receive. The utility model discloses can effectively be applicable to colliery abominable operating mode in the pit, convenient to use, safe and reliable can judge automatically accurate that it knows the mine staff of card and the distance of switch room to carry personel locator beacon to control the power break -make of controlled electrical apparatus load in view of the above.

Description

A kind of mining wireless is close to inductive switch
Technical field
The utility model relates to electric controling switch technical field, is specifically related to a kind of mining wireless for control load power supply being applicable to the inferior bad working environments of coal mine close to inductive switch.
Background technology
Illumination can not be lacked in coal mine.But normally possessor is not without implementing continuous illumination in 24 hours per capita in traditional underground coal mine illumination, and its power consumption is huge, also increases the cost burden of coal mining enterprise while waste electric energy.For this problem, many coal mining enterprises have carried out reducing energy consumption to the illumination of underground coal mine at present, generally by installing infrared sensing switch additional for controlling lighting and extinguishing of illuminating lamp, its operating principle be when have staff under mine close to time infrared sensing switch detect human body the infrared control illumination lamp ignition sent out, control illuminating lamp when staff leaves the distance range that infrared sensing switch can detect under mine and extinguish.Although this kind of infrared sensing switch has certain energy-saving effect, but in use also there is obvious deficiency: under the bad working environments environment for use of underground coal mine, because infrared sensing switch is easily by the interference of various thermal source, light source, radio-frequency radiation, thermal current etc., especially when underground coal mine environment temperature is close to body temperature, the working sensitivity of infrared sensing switch obviously declines, functional reliability greatly reduces and even often occurs being disturbed malfunction and close illumination, brings lose and cause potential safety hazard to production; And it can only detect moving object usually, cannot detect when human motion amplitude is little.
Current, in order to personnel location system has been installed usually all in production safety colliery, in coal mine personnel navigation system, an important device is personnel positioning mark card (rfid card) carried with by every mine staff, if utilize mine staff everybody carry with personnel positioning mark card develop a kind of switch being applicable to the reliable control load (comprising illumination) of underground coal mine applied environment, to coal mining enterprise energy-conservation and safety in production significant.
Utility model content
The purpose of this utility model: for the defect existed in prior art, the mining wireless providing that a kind of structure is simple, cost is not high, easy to use, adopt modularized design and be applicable to the inflammable and explosive environment for use of underground coal mine is close to inductive switch, its personnel positioning carried with mine staff in use identifies card and matches, by accurately identifying the distance of personnel and switch room, under the connected mine of corresponding automatic control, the on/off of electric appliance load (as illuminating lamp, alarm etc.), can realize the functions such as economize on electricity, automatic alarm.
The technical solution of the utility model: mining wireless of the present utility model is close to inductive switch, and its design feature is: comprise explosion-proof casing and encapsulation and be arranged on circuit arrangement in explosion-proof casing; Above-mentioned circuit arrangement comprises power transfer module, wireless communication module, main control module, Executive Module, arranges module and indicating lamp module;
Power transfer module is provided with power input, the first power output end and second source output; Wireless communication module is provided with radio communication end and internal communication ends; Main control module is provided with the first signal input part, signalization input, control signal output and condition indicative signal output; Executive Module is provided with control signal input, ac power input end and ac power output; Module is set and is provided with parameter signal output; Indicating lamp module is provided with signal input part;
First signal input part of main control module is electrically connected with the internal communication ends signal of wireless communication module; The signalization input of main control module is electrically connected with the parameter signal output end signal arranging module; The control signal input of Executive Module is electrically connected with the control signal output end signal of main control module; The signal input part of indicating lamp module is electrically connected with the condition indicative signal output end signal of main control module;
During use, the personnel positioning that the radio communication end of wireless communication module and mine staff carry with identifies card Radio-Frequency Wireless Communication; The power input of modular converter and the ac power input end of Executive Module are electrically connected with the live wire of underground coal mine AC127V AC power; The ac power output of Executive Module is electrically connected with the live wire of controlled electric appliance load; First power output end of power transfer module provides working power for Executive Module; The second source output of power transfer module is wireless communication module, main control module, arrange module and indicating lamp module provides working power.
Further scheme is: above-mentioned power transfer module comprises thermistor R1, piezo-resistance R2, AC/DC module, transient voltage suppressor V1, diode D1 and DC/DC conversion chip U1; AC/DC module is provided with the first alternating current source, the second alternating current source and DC power output end; DC/DC conversion chip U1 has power input power output end and earth terminal;
First alternating current source conllinear of one end of thermistor R1, one end of piezo-resistance R2 and AC/DC module; The other end of piezo-resistance R2 and the second alternating current source of AC/DC module form a common junction because of conllinear, the other end of this common junction and thermistor R1 forms the power input of above-mentioned power transfer module jointly; The positive pole of the DC power output end of AC/DC module, one end of transient voltage suppressor V1 and diode D1 forms a common junction because of conllinear, this common junction is the first power output end of above-mentioned power transfer module, and it exports+5V dc source; The power input of DC/DC conversion chip U1 is connected with the negative electricity of diode D1; The power output end of DC/DC conversion chip U1 is the second source output of above-mentioned power transfer module, and it exports+3.3V dc source; The earth terminal of DC/DC conversion chip U1 and the equal ground connection of the other end of transient voltage suppressor V1.
Further scheme also has: above-mentioned Executive Module comprises resistance R3, resistance R4, triode Q1, metal-oxide-semiconductor Q2 and dynamic circuit connector type relay H1; Dynamic circuit connector type relay H1 has coil and two contacts;
One end of resistance R3 is the control signal input of above-mentioned Executive Module; The other end of resistance R3 is electrically connected with the base stage of triode Q1; One end conllinear of the colelctor electrode of triode Q1, the grid of metal-oxide-semiconductor Q2 and resistance R4; The drain electrode of metal-oxide-semiconductor Q2 and the other end of resistance R4 form a common junction because of conllinear, this common junction is electrically connected with the first power output end of above-mentioned power transfer module; The source electrode of metal-oxide-semiconductor Q2 is electrically connected with terminals of the coil of dynamic circuit connector type relay H1; Another terminals of the coil of dynamic circuit connector type relay H1 and the equal ground connection of emitter-base bandgap grading of triode Q1; A contact of dynamic circuit connector type relay H1 is the ac power input end of above-mentioned Executive Module; Another contact of dynamic circuit connector type relay H1 is the ac power output of above-mentioned Executive Module.
The utility model has positive effect: (1) mining wireless of the present utility model is close to inductive switch, structure is simple, easy to use, adopt modularized design, whole circuit arrangement adopts rubber seal thus effectively can adapt to the inflammable and explosive applied environment of underground coal mine, and cost is not high, be easy to promote.(2) mining wireless of the present utility model is close to inductive switch, it in use, the personnel positioning carried with mine staff identifies is blocked (rfid card) and to be matched action by Radio-Frequency Wireless Communication, compare to infrared sensing switch conventional in prior art, it is under the bad working environments environment for use of underground coal mine, have that antijamming capability is strong, job stability and good reliability, the plurality of advantages such as the on/off of electric appliance load is more accurate under control mine.(3) mining wireless of the present utility model is close to inductive switch, it in use, the electric appliance load under mine such as control illuminating lamp, security alarm etc. can be advantageously used in: when load is illuminating lamp, when the mine staff carrying personnel's positioning mark card enters in the distance range of setting, it controls illuminating lamp and automatically lights, turn off the light leave the distance range of setting personnel after, also namely at nobody time to illuminating lamp auto-breaking, thus can effectively for coal mining enterprise's using electricity wisely when not affecting ore deposit underground work; When load is alarm, when the mine staff carrying personnel's positioning mark card enters the Off Limits of setting, switch connection alarm equipment alarm, to prevent the security incident that meets accident.(4) mining wireless of the present utility model is close to inductive switch, it in use, according to the difference of institute's circuit closer load, set easily by arranging the distance of reaction controling parameters of module to main control module, also by wireless communication module wireless setting: when load is illuminating lamp, the built-in induction of main control module triggers distance and is set to 20 meters, takes into account economize on electricity and safety; When load is alarm, induction trigger distance be set to 2 meters, both played safe warning function, again can not personnel not yet close to time affect normal work with regard to false alarm.
Accompanying drawing explanation
Fig. 1 is circuit structure block diagram of the present utility model, also show it in use with the electrical connection of load and identify the wireless communication signals annexation of blocking with personnel positioning in figure;
Fig. 2 is a kind of electrical schematic diagram of the power transfer module in Fig. 1;
Fig. 3 is a kind of electrical schematic diagram of the Executive Module in Fig. 1.
Reference numeral in above-mentioned accompanying drawing is as follows:
Power transfer module 1, wireless communication module 2, main control module 3, Executive Module 4, arranges module 5, indicating lamp module 6.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
(embodiment)
The mining wireless of the present embodiment, close to inductive switch, forms primarily of explosion-proof casing and the circuit arrangement be arranged in explosion-proof casing.
See Fig. 1, circuit arrangement primarily of power transfer module 1, wireless communication module 2, main control module 3, Executive Module 4, module 5 is set and indicating lamp module 6 forms.
Power transfer module 1 is provided with power input, the first power output end and second source output; Wireless communication module 2 is provided with radio communication end and internal communication ends; Main control module 3 is provided with the first signal input part, signalization input, control signal output and condition indicative signal output; Executive Module 4 is provided with control signal input, ac power input end and ac power output; Module 5 is set and is provided with parameter signal output; Indicating lamp module 6 is provided with signal input part.
First signal input part of main control module 3 is electrically connected with the internal communication ends signal of wireless communication module 2; The signalization input of main control module 3 is electrically connected with the parameter signal output end signal arranging module 5; The control signal input of Executive Module 4 is electrically connected with the control signal output end signal of main control module 3; The signal input part of indicating lamp module 6 is electrically connected with the condition indicative signal output end signal of main control module 3.
During use, the personnel positioning that the radio communication end of wireless communication module 2 and mine staff carry with identifies blocks (rfid card) Radio-Frequency Wireless Communication; The ac power input end of Executive Module 4 is electrically connected with the live wire of underground coal mine AC127V AC power; The ac power output of Executive Module 4 is electrically connected with the live wire of controlled electric appliance load.
External underground coal mine AC127V power supply when the power input of power transfer module 1 uses; First power output end of power transfer module 1 provides working power for Executive Module 4; The second source output of power transfer module 1 is wireless communication module 2, main control module 3, arrange module 5 and indicating lamp module 6 provides working power.
In the present embodiment, the core devices of main control module 3 preferably adopts the single-chip microcomputer of MSP430 model; Module 5 is set and preferably adopts keyboard, for carrying out optimum configurations to main control module 3; The optimum configurations of main control module 3 also to communicate with wireless communication module 2 by supporting handheld terminal and carries out wireless setting; Indicating lamp module 6 preferably adopts LED group, for the duty of display switch.
The each module of aforesaid circuit arrangement all adopts epoxy resin rubber seal to be arranged in explosion-proof casing, effectively can adapt to the inflammable and explosive applied environment of underground coal mine to make it.
See Fig. 2, power transfer module 1 is called for short TVS pipe primarily of thermistor R1, piezo-resistance R2, AC/DC module, transient voltage suppressor V1(), diode D1 and DC/DC conversion chip U1 forms.AC/DC module is provided with the first alternating current source, the second alternating current source and DC power output end; DC/DC conversion chip U1 has power input (Vin holds, No. 3 pin), power output end (Vout holds, No. 2 pin) and earth terminal (Gnd holds, No. 1 pin).
First alternating current source conllinear of one end of thermistor R1, one end of piezo-resistance R2 and AC/DC module; The other end of piezo-resistance R2 and the second alternating current source of AC/DC module form a common junction because of conllinear, the other end of this common junction and thermistor R1 forms the power input of aforesaid power transfer module 1 jointly; The positive pole of the DC power output end of AC/DC module, one end of transient voltage suppressor V1 and diode D1 forms a common junction because of conllinear, this common junction is the first power output end of aforesaid power transfer module 1, and it exports+5V dc source; The power input of DC/DC conversion chip U1 is connected with the negative electricity of diode D1; The power output end of DC/DC conversion chip U1 is the second source output of aforesaid power transfer module 1, and it exports+3.3V dc source; The earth terminal of DC/DC conversion chip U1 and the equal ground connection of the other end of transient voltage suppressor V1.
The thermistor R1 of power transfer module 1 and piezo-resistance R2 shields to subsequent conditioning circuit, and AC/DC module is used for converting AC127V alternating current to 5V direct current; Transient voltage suppressor V1 and diode D1 shields to circuit; DC/DC conversion chip U1 is used for converting 5V direct current to 3.3V direct current.
See Fig. 3, Executive Module 4 forms primarily of resistance R3, resistance R4, triode Q1, metal-oxide-semiconductor Q2 and dynamic circuit connector type relay H1.Dynamic circuit connector type relay H1 has coil and two contacts, and during coil no power, its 2 contacts are normally open, during coil electricity, and its 2 closings of contact.
One end of resistance R3 is the control signal input of aforesaid Executive Module 4; The other end of resistance R3 is electrically connected with the base stage of triode Q1; One end conllinear of the colelctor electrode of triode Q1, the grid of metal-oxide-semiconductor Q2 and resistance R4; The drain electrode of metal-oxide-semiconductor Q2 and the other end of resistance R4 form a common junction because of conllinear, this common junction is electrically connected (+5V dc source) with the first power output end of aforesaid power transfer module 1; The source electrode of metal-oxide-semiconductor Q2 is electrically connected with terminals of the coil of dynamic circuit connector type relay H1; Another terminals of the coil of dynamic circuit connector type relay H1 and the equal ground connection of emitter-base bandgap grading of triode Q1; A contact of dynamic circuit connector type relay H1 is the ac power input end of aforesaid Executive Module 4; Another contact of dynamic circuit connector type relay H1 is the ac power output of aforesaid Executive Module 4.
(application examples 1)
The mining wireless of previous embodiment close to inductive switch for controlling the illuminating lamp of underground coal mine.
The mining wireless of previous embodiment, close to inductive switch, when it is for controlling illuminating lamp, is mounted on by controlled illumination lamp, is first connected with underground coal mine AC127V power electric by the power input of its power transfer module 1; Again the ac power input end (contact of dynamic circuit connector type relay H1) of its Executive Module 4 is electrically connected with the live wire of underground coal mine AC127V power supply; Then the ac power output (another contact of dynamic circuit connector type relay H1) of Executive Module 4 is electrically connected with the live wire of controlled illuminating lamp.
The radio communication ranging localization algorithm of the built-in employing prior art programming of main control module 3; Carry out induction and trigger distance by arranging module 5 pairs of main control modules 3 and arrange, induction should be triggered distance in use-case and be set as 20 meters, take into account and economize on electricity and safety.
During use, its operating principle and the course of work are summarized as follows:
Mining wireless close to inductive switch wireless communication module 3 in real time and the mine staff personnel positioning of carrying identify and block (rfid card) and carry out Radio-Frequency Wireless Communication and by the signal real-time Transmission that receives to main control module 3, main control module 3 calculates the distance of this rfid card and this switch in real time by location algorithm, enter into the built-in induction of main control module 3 when there being the mine staff carrying personnel positioning mark card to trigger apart from time interior, the dynamic circuit connector type relay H1 that main control module 3 controls Executive Module 4 is closure state by off-state action, thus the power supply connecting controlled illuminating lamp makes it light and keeps the bright Chang Liang that throws light on, when the mine staff that this carries personnel positioning mark card escape to outside the built-in induction triggering distance of main control module 3, the dynamic circuit connector type relay H1 that main control module 3 controls Executive Module 4 reverts to normally open by closure state, thus disconnect the power supply of controlled illuminating lamp, make it extinguish.
(application examples 2)
Should other aspects of use-case identical with application examples 1, difference is:
1, controlled electric appliance load is changed into the alarm being arranged on underground coal mine exclusion area by illuminating lamp.
2, the induction that main control module 3 is built-in triggers distance and is set to several meters, specifically determine that suitable induction triggers distance according to the actual conditions of exclusion area, in use-case, induction triggering distance should be set as 2 meters, carry the mine staff of personnel positioning mark card when entering the exclusion area alarm distance of setting, alarm equipment alarm, both played safe warning function, again can not personnel not yet close to time affect normal work with regard to false alarm.
Above embodiment and application examples are the explanations to detailed description of the invention of the present utility model; but not to restriction of the present utility model; person skilled in the relevant technique is not when departing from spirit and scope of the present utility model; can also make various conversion and change and obtain corresponding equivalent technical scheme, therefore all equivalent technical schemes all should be included into scope of patent protection of the present utility model.

Claims (3)

1. mining wireless is close to an inductive switch, it is characterized in that: comprise explosion-proof casing and encapsulation and be arranged on circuit arrangement in explosion-proof casing; Described circuit arrangement comprises power transfer module (1), wireless communication module (2), main control module (3), Executive Module (4), arranges module (5) and indicating lamp module (6);
Power transfer module (1) is provided with power input, the first power output end and second source output; Wireless communication module (2) is provided with radio communication end and internal communication ends; Main control module (3) is provided with the first signal input part, signalization input, control signal output and condition indicative signal output; Executive Module (4) is provided with control signal input, ac power input end and ac power output; Module (5) is set and is provided with parameter signal output; Indicating lamp module (6) is provided with signal input part;
First signal input part of main control module (3) is electrically connected with the internal communication ends signal of wireless communication module (2); The signalization input of main control module (3) is electrically connected with the parameter signal output end signal arranging module (5); The control signal input of Executive Module (4) is electrically connected with the control signal output end signal of main control module (3); The signal input part of indicating lamp module (6) is electrically connected with the condition indicative signal output end signal of main control module (3);
During use, the personnel positioning that the radio communication end of wireless communication module (2) and mine staff carry with identifies card Radio-Frequency Wireless Communication; The power input of modular converter (1) and the ac power input end of Executive Module (4) are electrically connected with the live wire of underground coal mine AC127V AC power; The ac power output of Executive Module (4) is electrically connected with the live wire of controlled electric appliance load; First power output end of power transfer module (1) is that Executive Module (4) provides working power; The second source output of power transfer module (1) is wireless communication module (2), main control module (3), arrange module (5) and indicating lamp module (6) provides working power.
2. mining wireless according to claim 1 is close to inductive switch, it is characterized in that: described power transfer module (1) comprises thermistor R1, piezo-resistance R2, AC/DC module, transient voltage suppressor V1, diode D1 and DC/DC conversion chip U1; AC/DC module is provided with the first alternating current source, the second alternating current source and DC power output end; DC/DC conversion chip U1 has power input power output end and earth terminal;
First alternating current source conllinear of one end of thermistor R1, one end of piezo-resistance R2 and AC/DC module; The other end of piezo-resistance R2 and the second alternating current source of AC/DC module form a common junction because of conllinear, the other end of this common junction and thermistor R1 forms the power input of described power transfer module (1) jointly; The positive pole of the DC power output end of AC/DC module, one end of transient voltage suppressor V1 and diode D1 forms a common junction because of conllinear, this common junction is the first power output end of described power transfer module (1), and it exports+5V dc source; The power input of DC/DC conversion chip U1 is connected with the negative electricity of diode D1; The power output end of DC/DC conversion chip U1 is the second source output of described power transfer module (1), and it exports+3.3V dc source; The earth terminal of DC/DC conversion chip U1 and the equal ground connection of the other end of transient voltage suppressor V1.
3. mining wireless according to claim 1 is close to inductive switch, it is characterized in that: described Executive Module (4) comprises resistance R3, resistance R4, triode Q1, metal-oxide-semiconductor Q2 and dynamic circuit connector type relay H1; Dynamic circuit connector type relay H1 has coil and two contacts;
One end of resistance R3 is the control signal input of described Executive Module (4); The other end of resistance R3 is electrically connected with the base stage of triode Q1; One end conllinear of the colelctor electrode of triode Q1, the grid of metal-oxide-semiconductor Q2 and resistance R4; The drain electrode of metal-oxide-semiconductor Q2 and the other end of resistance R4 form a common junction because of conllinear, this common junction is electrically connected with the first power output end of described power transfer module (1); The source electrode of metal-oxide-semiconductor Q2 is electrically connected with terminals of the coil of dynamic circuit connector type relay H1; Another terminals of the coil of dynamic circuit connector type relay H1 and the equal ground connection of emitter-base bandgap grading of triode Q1; A contact of dynamic circuit connector type relay H1 is the ac power input end of described Executive Module (4); Another contact of dynamic circuit connector type relay H1 is the ac power output of described Executive Module (4).
CN201520492404.7U 2015-07-09 2015-07-09 Mining wireless inductive switch that is close Expired - Fee Related CN204783117U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520492404.7U CN204783117U (en) 2015-07-09 2015-07-09 Mining wireless inductive switch that is close

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520492404.7U CN204783117U (en) 2015-07-09 2015-07-09 Mining wireless inductive switch that is close

Publications (1)

Publication Number Publication Date
CN204783117U true CN204783117U (en) 2015-11-18

Family

ID=54523185

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520492404.7U Expired - Fee Related CN204783117U (en) 2015-07-09 2015-07-09 Mining wireless inductive switch that is close

Country Status (1)

Country Link
CN (1) CN204783117U (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104963726A (en) * 2015-07-09 2015-10-07 天地(常州)自动化股份有限公司 Mining wireless proximity inductive switch
CN107845236A (en) * 2017-12-05 2018-03-27 中铁局集团天津建设工程有限公司 Based on the construction operation security protection early warning system positioned in real time and its method for early warning

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104963726A (en) * 2015-07-09 2015-10-07 天地(常州)自动化股份有限公司 Mining wireless proximity inductive switch
CN104963726B (en) * 2015-07-09 2017-07-07 天地(常州)自动化股份有限公司 Mining wireless is close to inductive switch
CN107845236A (en) * 2017-12-05 2018-03-27 中铁局集团天津建设工程有限公司 Based on the construction operation security protection early warning system positioned in real time and its method for early warning

Similar Documents

Publication Publication Date Title
CN205485532U (en) Circuit intelligent management system
CN104963726B (en) Mining wireless is close to inductive switch
CN104378883B (en) LED emergency lamp and control method thereof and LED lamp emergency power supply module
CN204069443U (en) A kind of electronic switch
CN104507196A (en) LED fire-fighting emergency lamp control circuit
CN203798898U (en) High-voltage electriferous display locking device
CN103763816B (en) A kind of central power supply system for outdoor illuminating system
CN204783117U (en) Mining wireless inductive switch that is close
CN204374295U (en) A kind of induction-type high-voltage charged display device
CN203872394U (en) Light control apparatus based on Zigbee networking and human body infrared induction technology
CN204069424U (en) Lamp dimmer
CN203801126U (en) Lamp control switch circuit based on human body detection
CN203352860U (en) Intelligent identification power supply during power grid blackout or artificial-switching power-off
CN205883678U (en) But light modulation lamp's controller, control system
CN202841600U (en) Intelligent lighting and emergency treatment energy saving device for dark places
CN105181168A (en) Wireless temperature sensor
CN205123230U (en) A type residual current circuit breaker based on microcontroller
CN204760766U (en) Block terminal with illumination function
CN203810254U (en) Induction lamp
CN203691687U (en) Intelligent illuminating system
CN103281821A (en) Intelligent identification power supply during power grid blackout or artificial-switching power-off
CN202617448U (en) 16A switch controller
CN202679700U (en) Low-pressure LED (light-emitting diode) energy-saving lighting system
CN108828964A (en) A kind of computer based laboratory site management system
CN204649897U (en) A kind of overhead line fault indicator

Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151118

Termination date: 20170709