CN104180944A - Waterproof test device for lamp - Google Patents
Waterproof test device for lamp Download PDFInfo
- Publication number
- CN104180944A CN104180944A CN201310190667.8A CN201310190667A CN104180944A CN 104180944 A CN104180944 A CN 104180944A CN 201310190667 A CN201310190667 A CN 201310190667A CN 104180944 A CN104180944 A CN 104180944A
- Authority
- CN
- China
- Prior art keywords
- relay
- normally opened
- opened contact
- input
- pin
- 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.)
- Granted
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The embodiment of the invention discloses a waterproof test device for a lamp, which comprises a DC voltage stabilizing circuit, a first relay, a second relay, a switch, a delay relay with a double-time setting function, a motor, a water pump, a diode, a first resistor, a second resistor and a buzzer, wherein the DC voltage stabilizing circuit is used for converting AC voltage inputted by an AC power supply into DC voltage. The waterproof test device for the lamp has the advantages of being simple, safe and reliable, and problems that the test efficiency is not high, and the test fatigue strength is large can be solved.
Description
Technical field
The present invention relates to light fixture field tests, relate in particular to a kind of light fixture waterproof test device.
Background technology
Light fixture is as a kind of visual plant of normal lighting, especially in today of modern development in science and technology, indispensable especially, if there is no in the world lamp lighting equipment, to be night as dark as a stack of black cats, factory cannot produce, city does not have street lighting, each each industry all can not normal device normal operational outfits all, cause production efficiency extremely low, this device is authenticating and the shell rainproof of outdoor application light fixture is tested mainly for light fixture, in light fixture standard GB7000.1-2007 and GB4208-2008 standard the inside, all strict regulations must have the shell protection class requirement of light fixture, therefore light fixture will be obtained various certifications before listing, as 3C, CQC, coal peace, certification of explosion protection and some Foreign certifications all need to carry out shell protection test, and meet the represented degree of protection requirement of light fixture, certainly light fixture seal failure water inlet is also to cause reliability and important index of security, so light fixture all can require to spray test according to the degree of protection of light fixture in research and development and factory inspection process, that the manual device of directly holding spray sprays facing to light fixture always in test before, encounter after certain hour and to spray another side going to rotate light fixture, cause like this some places not to be sprayed onto position, thereby affect the reliability of light fixture, in spray process, need manually to stand over there always continue to spray simultaneously, low and the tester's fatigue strength of testing efficiency increases.
Summary of the invention
Embodiment of the present invention technical matters to be solved is, a kind of waterproof test device is provided, and can solve waterproof test dependence in prior art and manually complete and the low deficiency of testing efficiency.
In order to solve the problems of the technologies described above, the embodiment of the present invention provides a kind of waterproof test device, comprise direct current regulation circuit, the first relay, the second relay, switch, there is the timing relay of dual-time set-up function, for driving the motor of placing light fixture rotation to be tested, spray the pump equipment of light fixture to be measured and the warning circuit for generation of sound or light efficiency alerting signal for drawing water, described direct current regulation circuit is for converting the alternating voltage of AC power input to DC voltage, wherein, the input of described direct current regulation circuit connects live wire and the zero line of described AC power, the positive output pin of described direct current regulation circuit is connected with one end of described switch, the negative output pin ground connection of described direct current regulation circuit and also connect respectively one end of the 4th normally opened contact and the negative power supply input end of described warning circuit of described the second relay, the other end of described switch is connected with one end of the 3rd normally opened contact of described the first relay, the 3rd normally opened contact of described switch and described the first relay is for being connected, the other end of the 3rd normally opened contact of described the first relay connects respectively one end of described the second relay the 3rd normally opened contact and the cathode power supply input end of described warning circuit, and a normally closed contact of described the second relay of connecting in the current supply circuit of described warning circuit, the other end of the 3rd normally opened contact of described the second relay connects the electrode input end of described motor, and the other end of the 4th normally opened contact of described the second relay connects the negative input of described motor, one end of the 1st normally opened contact of described the first relay connects the live wire of described AC power, and one end of the 2nd normally opened contact of described the first relay connects the zero line of described AC power, the other end of the 1st normally opened contact of described the first relay connects respectively one of an input end of one end of described the second relay the 2nd normally opened contact, described the second relay coil operating voltage and described timing relay and exchanges input pin 2 pin, the other end of the 2nd normally opened contact of described the first relay connect respectively one end of the 1st normally opened contact of described the second relay and described timing relay another exchange input pin 7 pin, external switch common port the 1st pin of described timing relay is connected with time reseting terminal the 3rd pin, another input end of described the second relay coil operating voltage is connected with the normally opened contact end of described timing relay the 6th pin, the 1st normally opened contact of described the second relay and the other end of the 2nd normally opened contact are connected with the power supply input of described pump equipment respectively.
Implement the embodiment of the present invention, there is following beneficial effect:
Coordinate and control water pump and motor by timing relay and relay, constantly operate without tester, automatically spray operation, and as long as with changing jet pipe and regulating the hydraulic pressure just can compatible various test degree of protection, this waterproof test device has simple and safe reliable advantage, has solved the not high and test fatigue strength large problem of testing efficiency.
Brief description of the drawings
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the circuit diagram of a kind of waterproof test device of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiment.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Referring to Fig. 1, be the circuit diagram of a kind of waterproof test device of the embodiment of the present invention, this device comprises:
Direct current regulation circuit 1, the first relay K 1, the second relay K 2, switch S, there is the timing relay KT of dual-time set-up function, the motor M of placing light fixture to be tested rotation for driving, warning circuit 2 and spray the pump equipment SB of light fixture to be measured for drawing water, direct current regulation circuit is for converting the alternating voltage of AC power input to direct current, and the annexation of above-mentioned parts is:
In figure, be input as example with 220V AC power, the input of direct current regulation circuit 1 connects live wire L and the zero line N of described AC power; The positive output pin of direct current regulation circuit 1 is connected with one end of switch S, the negative output pin ground connection of direct current regulation circuit 1 and also connect respectively one end of the 4th normally opened contact and the negative power supply input end of described warning circuit 2 of the second relay K 2;
The other end of switch S is connected with one end of the 3rd normally opened contact of the first relay K 1, the 3rd normally opened contact of S switch and the first relay K 1 is for being connected, the other end of the 3rd normally opened contact of the first relay K 1 connects respectively one end of the second relay K 2 the 3rd normally opened contact and the cathode power supply input end of described warning circuit 2, and a normally closed contact of described the second relay of connecting in the current supply circuit of described warning circuit 2;
The other end of the 3rd normally opened contact of the second relay K 2 connects the electrode input end of motor M, and the other end of the 4th normally opened contact of the second relay K 2 connects the negative input of motor M;
One end of the 1st normally opened contact of the first relay K 1 connects the live wire of described AC power, and one end of the 2nd normally opened contact of the first relay K 1 connects the zero line of described AC power; The other end of the 1st normally opened contact of the first relay K 1 connects respectively one end of the second relay K 2 the 2nd normally opened contact, an input end of described the second relay K 2 coil working voltages exchanges input pin the 2nd pin with one of described timing relay KT;
The other end of the 2nd normally opened contact of the first relay K 1 connect respectively one end of the 1st normally opened contact of the second relay K 2 and timing relay KT another exchange input pin the 7th pin; External switch common port the 1st pin of described timing relay KT is connected with time reseting terminal the 3rd pin; Another input end of described the second relay K 2 coil working voltages is connected with normally opened contact end the 6th pin of described timing relay KT; The 1st normally opened contact of described the second relay K 2 and the other end of the 2nd normally opened contact are connected with the power supply input of described pump equipment SB respectively.
Above-described embodiment structure mainly coordinates control water pump and motor by timing relay and the relay of dual-time set-up function, constantly operate without tester, automatically spray operation, and as long as with changing jet pipe and regulating the hydraulic pressure just can compatible various test degree of protection, this waterproof test device has simple and safe reliable advantage, has solved the not high and test fatigue strength large problem of testing efficiency.
The two digital display time relays of setting of the preferred DH48S-S of timing relay here, arrange time delay T1 as spray time, general waterproof test duration of drenching with rain is 20min, when IP65 test, spray time is 15min, when IP66 test, spray time is 3min, the delay time T2 arranging is as warning delay time, for delayed startup warning circuit 2 after finishing at the spray time T1 arranging.DH48S-S is two to be set in digital display time relay, and the 5th pin is normal battle as normally closed point, the 6th pin, and the 8th pin is movable end or common port, and 5,8 pin are connected to form time delay normally closed contact, and 6,8 pin are connected to form normally opened contact.In the time carrying out test function of the present invention, need to connected the normally closed contact two ends of timing relay, normally opened contact two ends be connected in inside, and in outside, another interchange input pin 7 pin of timing relay KT are connected to normally closed point the 5th pin of timing relay KT by normally closed contact.
On the basis of above-described embodiment structure, referring to Fig. 1, described warning circuit 2 comprises diode D1, the first resistance R 1, the second current-limiting resistance R2 and hummer SP1; The other end of the 3rd normally opened contact of the first relay K 1 and one end of described the first resistance R 1 described in the anodic bonding of described diode D1, the negative electrode of described diode D1 connects one end of the 5th normally closed contact of described the second relay K 2, and the other end of the 5th normally closed contact of described the second relay K 2 is connected with one end of the 6th normally closed contact of described the second relay K 2; The other end of the 6th normally closed contact of described the second relay K 2 is connected with one end of described the second current-limiting resistance R2; The other end of described the second resistance R 2 is connected with described hummer SP1 one end, the other end ground connection of the other end of described hummer SP1 and described the first resistance R 1.Here adopt comparatively simple circuit structure to realize audible alarm prompting, can certainly adopt LED driving circuit to realize the output of light efficiency alerting signal.
Further preferred, on the basis of above-described embodiment structure, referring to Fig. 1, direct current regulation circuit 1 comprises transformer T1, rectifier BD1, voltage stabilizer Q1, the first filter capacitor C1 and the second filter capacitor C2, rectifier BD1 is preferably and comprises 4 commutation diodes, voltage stabilizer Q1 is preferably trifocal integrated regulator (as 7824 in Fig. 1), and annexation is:
The live wire L of described AC power and zero line N are connected respectively the two ends of the former limit winding of described transformer T1, the output of the inferior limit winding of described transformer T1 successively by output after rectifier BD1, the first filter capacitor C1, trifocal integrated regulator Q1 and the second filter capacitor C2 as the positive output pin of direct current regulation circuit 1.
Further preferred, on the basis of above-described embodiment structure, referring to Fig. 1, above-mentioned proving installation also comprises the first fuse FR1 and the second fuse FR2, one end of described the first fuse FR1 is connected with the zero line N of described AC power, and the other end of described the first fuse FR2 is connected with one end of the 2nd normally opened contact of the input of described direct current regulation circuit 1, described the first relay K 1; One end of described the second fuse FR2 is connected with the live wire L of described AC power, and the other end of described the second fuse FR2 is connected with one end of the 1st normally opened contact of the input of described direct current regulation circuit 1, described the first relay K 1.Here utilize the first fuse FR1 and the second fuse FR2 to shield in circuit, avoid overvoltage or overcurrent to cause damage to circuit board.
Further preferred, on the basis of above-described embodiment structure, referring to Fig. 1, above-mentioned proving installation also comprises: the first electrothermal relay FU1 between the power supply input that is connected on described pump equipment SB and described the second relay K 2 and the power supply that is connected on described motor M are inputted the second electrothermal relay FU2 between described the second relay K 2.Concrete syndeton is: a normally closed contact of described the first electrothermal relay FU1 that connects respectively between the 1st normally opened contact of described the second relay K 2 and the other end of the 2nd normally opened contact and the input of the power supply of described pump equipment SB, a normally closed contact of described the second electrothermal relay FU2 that connects respectively between the 3rd normally opened contact of described the second relay K 2 and the other end of the 4th normally opened contact and the both positive and negative polarity input end of described motor M.
Further preferred, on the basis of above-described embodiment structure, above-mentioned proving installation also comprises a turntable, the workplace of described turntable is used for placing light fixture to be tested, make the water spray delivery outlet of lamp surface to be tested to described pump equipment, the rotating shaft of described turntable is connected by gear train with the output shaft of described motor, is the moment that described turntable rotates centered by described rotating shaft for the torque conversion that motor is exported.
Above-mentioned each structure ingredient can constitute new technical scheme on the basis of first embodiment, but all can solve technical matters solved by the invention, a kind of simple light fixture waterproof test device is provided, can solves waterproof test dependence in prior art and manually complete and the low deficiency of testing efficiency.
Referring to Fig. 1, it provides the electrical block diagram of an optimum embodiment.The principle of work of this waterproof test device is: in carrying out short-circuit test, set spray time according to standard-required, then spray time is set on timing relay KT is T1, test duration of generally drenching with rain is 20min, IP65 spray time is 15min, IP66 spray time is 3min, it is T2 that setting spray finishes rear time of fire alarming, the T2 time can be set according to user and need to adjust, can hear that with prompting tester spray is completed warning, is placed on light fixture to be measured on turntable.
Power on to main circuit, now the first relay K 1 also not electric, in normally open, timing relay KT does not also work, the electric current of AC power flows to transformer T1, carry out step-down through transformer T1 and obtain 24V alternating voltage, carry out rectification through rectifier BD1 again and obtain 24V DC voltage, carry out filtering through the first filter capacitor C1, obtaining stable 24V DC voltage through voltage stabilizer 7824, again through the second filter capacitor C2 absorption peak voltage, press switch S, the 3rd normally opened contact of switch S and the first relay K 1 is for being connected, the 3rd normally opened contact of the first relay K 1 obtains the electric adhesive of carrying out, now timing relay KT obtains electric starting working, carry out spray time T1 time delay, now the second relay K 2 obtains electric, its normally opened contact group K-1(comprises the 1st normally opened contact 1, the 2nd normally opened contact 2, the 3rd normally opened contact 3, the 4th normally opened contact 4) adhesive, its normally closed contact group K-2(comprises the 5th normally closed contact 5, the 6th normally closed contact 6) disconnect, water pump SB starts to draw water simultaneously, motor M also starts to rotate, light fixture to be measured rotates simultaneously on turntable, adjust hydraulic pressure and water rate, just start the test light fixture on turntable to spray test, when reaching after spray time T1, warning delay time T2 trigger, the 1st normally opened contact 1 of the second relay K 2, the 2nd normally opened contact 2, the 3rd normally opened contact 3 and the 4th normally opened contact 4 disconnect, the 5th normally closed contact 5 and the 6th normally closed contact 6 adhesives, electric current is through diode D1 and normally closed contact group K-2(the 5th normally closed contact 5 and the 6th normally closed contact 6) serial connection flows to the second current-limiting resistance R2, after carrying out current limliting dividing potential drop, the second current-limiting resistance R2 flows on hummer SP1, hummer SP1 conducting is reported to the police, prompting tester be completed.Simultaneously circuit occurs that the high or short circuit of voltage also has fuse (FR1 and FR2) and electrothermal relay (FU1 and FU2) to protect.
This device adopts relay, timing relay, motor and water pump just can form a simple waterproof test device, press switch, relay just electric, timing relay is started working, the motor of water pump and driving turntable is also started working simultaneously, water pump starts to draw water, water is sprayed by jet pipe, adjust spray time and distance according to standard-required, mixing up the needed pressure of different degree of protection and the jet pipe of having selected caliber according to the tensimeter on jet pipe, spray facing to light fixture to be measured, having arrived hummer Deng spray time just can alarm tester, so just can complete spray equipment, do not need the artificial moment to keep in the other operation of light fixture, after being completed, can point out tester by automatic alarm, thereby complete light fixture spray test process, the design of this device has simple, the advantage such as safe and reliable, solve the not high fatigue strength problem with testing of testing efficiency.
One of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, can carry out the hardware that instruction is relevant by computer program to complete, described program can be stored in a computer read/write memory medium, this program, in the time carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Random Access Memory, RAM) etc.
Above disclosed is only a kind of preferred embodiment of the present invention, certainly can not limit with this interest field of the present invention, one of ordinary skill in the art will appreciate that all or part of flow process that realizes above-described embodiment, and the equivalent variations of doing according to the claims in the present invention, still belong to the scope that invention is contained.
Claims (8)
1. a light fixture waterproof test device, it is characterized in that, comprise direct current regulation circuit, the first relay, the second relay, switch, there is the timing relay of dual-time set-up function, place the motor of light fixture rotation to be tested for driving, spray the pump equipment of light fixture to be measured and the warning circuit for generation of sound or light efficiency alerting signal for drawing water, described direct current regulation circuit is for converting the alternating voltage of AC power input to DC voltage, wherein
The input of described direct current regulation circuit connects live wire and the zero line of described AC power;
The positive output pin of described direct current regulation circuit is connected with one end of described switch, the negative output pin ground connection of described direct current regulation circuit and also connect respectively one end of the 4th normally opened contact and the negative power supply input end of described warning circuit of described the second relay;
The other end of described switch is connected with one end of the 3rd normally opened contact of described the first relay, the 3rd normally opened contact of described switch and described the first relay is for being connected, the other end of the 3rd normally opened contact of described the first relay connects respectively one end of described the second relay the 3rd normally opened contact and the cathode power supply input end of described warning circuit, and a normally closed contact of described the second relay of connecting in the current supply circuit of described warning circuit;
The other end of the 3rd normally opened contact of described the second relay connects the electrode input end of described motor, and the other end of the 4th normally opened contact of described the second relay connects the negative input of described motor;
One end of the 1st normally opened contact of described the first relay connects the live wire of described AC power, and one end of the 2nd normally opened contact of described the first relay connects the zero line of described AC power; The other end of the 1st normally opened contact of described the first relay connects respectively one of an input end of one end of described the second relay the 2nd normally opened contact, described the second relay coil operating voltage and described timing relay and exchanges input pin 2 pin;
The other end of the 2nd normally opened contact of described the first relay connect respectively one end of the 1st normally opened contact of described the second relay and described timing relay another exchange input pin 7 pin; External switch common port the 1st pin of described timing relay is connected with time reseting terminal the 3rd pin; Another input end of described the second relay coil operating voltage is connected with the normally opened contact end of described timing relay the 6th pin; The 1st normally opened contact of described the second relay and the other end of the 2nd normally opened contact are connected with the power supply input of described pump equipment respectively.
2. device as claimed in claim 1, it is characterized in that, described direct current regulation circuit comprises transformer, rectifier, voltage stabilizer, the first filter capacitor and the second filter capacitor, the live wire of described AC power and zero line are connected respectively the two ends of the former limit winding of described transformer, the output of the inferior limit winding of described transformer successively by output after rectifier, the first filter capacitor, trifocal integrated regulator and the second filter capacitor as the positive output pin of direct current regulation circuit.
3. device as claimed in claim 1, is characterized in that, described warning circuit comprises diode, the first resistance, the second current-limiting resistance and hummer; The other end of the 3rd normally opened contact of the first relay and one end of described the first resistance described in the anodic bonding of described diode, the negative electrode of described diode connects one end of the 5th normally closed contact of described the second relay, and the other end of the 5th normally closed contact of described the second relay is connected with one end of the 6th normally closed contact of described the second relay; The other end of the 6th normally closed contact of described the second relay is connected with one end of described the second current-limiting resistance; The other end of described the second resistance is connected with described hummer one end, the other end ground connection of the other end of described hummer and described the first resistance.
4. device as claimed in claim 2, is characterized in that, described rectifier comprises 4 commutation diodes.
5. device as claimed in claim 1, it is characterized in that, also comprise the first fuse and the second fuse, one end of described the first fuse is connected with the zero line of described AC power, and the other end of described the first fuse is connected with one end of the 2nd normally opened contact of the input of described direct current regulation circuit, described the first relay; One end of described the second fuse is connected with the live wire of described AC power, and the other end of described the second fuse is connected with one end of the 1st normally opened contact of the input of described direct current regulation circuit, described the first relay.
6. device as claimed in claim 1, it is characterized in that, also comprise: the first electrothermal relay between the power supply input that is connected on described pump equipment and described the second relay and the power supply that is connected on described motor are inputted the second electrothermal relay between described the second relay.
7. device as claimed in claim 6, it is characterized in that, connect respectively between the input of the 1st normally opened contact of described the second relay and the 2nd other end of normally opened contact and the power supply of a described pump equipment normally closed contact of described the first electrothermal relay, a normally closed contact of described the second electrothermal relay of connecting respectively between the 3rd normally opened contact of described the second relay and the other end of the 4th normally opened contact and the both positive and negative polarity input end of described motor.
8. device as claimed in claim 1, it is characterized in that, also comprise a turntable, the workplace of described turntable is used for placing light fixture to be tested, make the water spray delivery outlet of lamp surface to be tested to described pump equipment, the rotating shaft of described turntable is connected by gear train with the output shaft of described motor, is the moment that described turntable rotates centered by described rotating shaft for the torque conversion that motor is exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310190667.8A CN104180944B (en) | 2013-05-21 | 2013-05-21 | A kind of light fixture waterproof test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310190667.8A CN104180944B (en) | 2013-05-21 | 2013-05-21 | A kind of light fixture waterproof test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104180944A true CN104180944A (en) | 2014-12-03 |
| CN104180944B CN104180944B (en) | 2017-06-23 |
Family
ID=51962171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310190667.8A Active CN104180944B (en) | 2013-05-21 | 2013-05-21 | A kind of light fixture waterproof test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104180944B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59108933A (en) * | 1982-12-15 | 1984-06-23 | Toshiba Corp | Device for detecting gas leakage from current collecting ring |
| CN1245872A (en) * | 1999-07-16 | 2000-03-01 | 深圳市红门机电设备有限公司 | Electronic automatic controller for water pump |
| CN2383309Y (en) * | 1999-04-29 | 2000-06-21 | 胡龙 | Suspended device for fertilizing and spraying pesticide |
| US20080178660A1 (en) * | 2007-01-16 | 2008-07-31 | Louis Scott Bolt | Evaporative emission system test apparatus and method of testing an evaporative emission system |
| CN101398345A (en) * | 2008-10-09 | 2009-04-01 | 重庆长安汽车股份有限公司 | Control system of durability test device for automobile window glass water scraper |
| CN201740628U (en) * | 2010-04-29 | 2011-02-09 | 重庆长安汽车股份有限公司 | Waterproof test device of automobile rear fog lamp |
| CN202676385U (en) * | 2012-08-06 | 2013-01-16 | 宁波吉江汽车制造有限责任公司 | Automobile rain showering test-bed with remote control function |
| CN102937565A (en) * | 2012-10-23 | 2013-02-20 | 鞍钢股份有限公司 | Corrosion test device and method for simulating ocean splash zone |
-
2013
- 2013-05-21 CN CN201310190667.8A patent/CN104180944B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59108933A (en) * | 1982-12-15 | 1984-06-23 | Toshiba Corp | Device for detecting gas leakage from current collecting ring |
| CN2383309Y (en) * | 1999-04-29 | 2000-06-21 | 胡龙 | Suspended device for fertilizing and spraying pesticide |
| CN1245872A (en) * | 1999-07-16 | 2000-03-01 | 深圳市红门机电设备有限公司 | Electronic automatic controller for water pump |
| US20080178660A1 (en) * | 2007-01-16 | 2008-07-31 | Louis Scott Bolt | Evaporative emission system test apparatus and method of testing an evaporative emission system |
| CN101398345A (en) * | 2008-10-09 | 2009-04-01 | 重庆长安汽车股份有限公司 | Control system of durability test device for automobile window glass water scraper |
| CN201740628U (en) * | 2010-04-29 | 2011-02-09 | 重庆长安汽车股份有限公司 | Waterproof test device of automobile rear fog lamp |
| CN202676385U (en) * | 2012-08-06 | 2013-01-16 | 宁波吉江汽车制造有限责任公司 | Automobile rain showering test-bed with remote control function |
| CN102937565A (en) * | 2012-10-23 | 2013-02-20 | 鞍钢股份有限公司 | Corrosion test device and method for simulating ocean splash zone |
Non-Patent Citations (2)
| Title |
|---|
| 刘永奇等: "《时间继电器在控制电机运行中的应用》", 《化学工程与设备》, no. 7, 31 July 2010 (2010-07-31) * |
| 姚福来等: "《自动化设备和工程的设计、安装、调试、故障诊断》", 31 January 2013, article "《常用电器控制电路》", pages: 146-150 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104180944B (en) | 2017-06-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102608484A (en) | Fault indictor for power distribution lines | |
| CN204089306U (en) | A kind of fully-automatic intelligent quick charger | |
| CN202042678U (en) | Automatic power-off power line | |
| CN103730782A (en) | Acousto-optic warning power socket for electric leakage of electric equipment | |
| CN104180944A (en) | Waterproof test device for lamp | |
| CN202563033U (en) | Distribution line fault indicator | |
| CN202735383U (en) | Intelligent malignant load recognition and protection device capable of displaying load power | |
| CN204206047U (en) | A kind of starting or stopping control circuit | |
| CN203851081U (en) | Bionic plant solar device | |
| CN204012026U (en) | A kind of family expenses electric leakage automatic alarm protection socket | |
| CN206684237U (en) | Power supply remote supervisory | |
| CN104378895B (en) | A kind of lamps and lanterns water inlet observation circuit | |
| CN104134971B (en) | A kind of battery reversal connection warning circuit and electronic equipment | |
| CN105587420A (en) | Diesel engine starting and protecting controller | |
| CN207426673U (en) | The hardware circuit of control and protective switch equipment | |
| CN205138477U (en) | Iron tower inclined alarm of preventing cutting off power supply | |
| CN205544218U (en) | Motor control and protection switch with cross heat -carrying memory protect function | |
| CN201041881Y (en) | A power display jack | |
| CN205406872U (en) | Overvoltage protection power receptacle | |
| CN204858375U (en) | Automatic detection formula box -type substation | |
| CN204886380U (en) | Manual generator device for nuclear power station | |
| CN204536399U (en) | A kind of alterating and direct current detection system | |
| CN204224116U (en) | A kind of tower crane with power-off stand-by power supply function | |
| CN204239218U (en) | Water pump controller | |
| CN109587890A (en) | A kind of drive circuit of LED light |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |