CN202025096U - Fault self-diagnosis device for photoelectric area sensor channel - Google Patents
Fault self-diagnosis device for photoelectric area sensor channel Download PDFInfo
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- CN202025096U CN202025096U CN2011201019153U CN201120101915U CN202025096U CN 202025096 U CN202025096 U CN 202025096U CN 2011201019153 U CN2011201019153 U CN 2011201019153U CN 201120101915 U CN201120101915 U CN 201120101915U CN 202025096 U CN202025096 U CN 202025096U
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Abstract
The utility model discloses a fault self-diagnosis device for a photoelectric area sensor channel. The fault self-diagnosis device comprises an illuminator, a light receptor, and a controller. When a photoelectric area sensor is started up, the controller sends communication self-inspection signals to the illuminator and the light receptor respectively, the illuminator and the light receptor transmit response data signals to the controller, and the light receptor transmits shading state signals of all light-receiving units to the controller after the controller sends channel mis-transmitting self-inspection signals to the illuminator and the light receptor; and after the controller sends channel mis-shading self-inspection signals to the illuminator and the light receptor, the light receptor transmits transmitting state signals of all the light-receiving units to the controller. Communication self-inspection is used for detecting whether the connection among power cords and communication wires of all components in the photoelectric area sensor is normal or not; and channel mis-transmitting self-inspection and channel mis-shading self-inspection can not only find the channel where fault is located, but also judge the specific type of the fault between an illuminating unit fault and a light-receiving unit fault.
Description
Technical field
The utility model relates to the self-diagnosis technology of photo-voltaic area sensor passage fault, more particularly, relates to a kind of fault self-diagnosis device of photo-voltaic area sensor passage.
Background technology
Whether the main effect of photo-voltaic area sensor, photoelectric sensor and light curtain sensor is to survey whether the object existence to be arranged in the specific region scope or have object to enter this zone.The photo-voltaic area sensor generally is made of jointly one group of illuminator and one group of corresponding light-receiving device of being made up of light receiving unit of being made up of luminescence unit, the light that each luminescence unit sends in illuminator is received by specific in a light-receiving device light receiving unit usually, has so just formed a passage of photo-voltaic area sensor.If there is object to shelter from light path on this passage, then the light intensity that will detect reception of the light receiving unit on this passage changes, and changes to and does not receive incident light from receiving incident light, and this just shows has object to exist on this passage.According to such principle, with the parallel zone of forming of one group of several similar optical channel, have or not object by detecting on each passage, so just realized detection to having or not object to exist or have or not object to enter in this specific region scope.The photo-voltaic area sensor is generally with scan mode work, both by the order of arrangement of passages, takes turns luminous and corresponding light receiving unit by one by one luminescence unit circularly and is subjected to light, at a time has only a passage working.Scan mode can be divided into parallel sweep mode and cross scan mode under the parallel sweep mode, the channel number that illuminator is identical with the light-receiving device gating scans, that is: first via light receiving unit was subjected to light when first via luminescence unit was luminous, the second road light receiving unit was subjected to light when the second road luminescence unit was luminous, the rest may be inferred, and N road light receiving unit was subjected to light when N road luminescence unit was luminous; And under the cross scan mode, the illuminator channel number different with the light-receiving device gating carries out cross scan, and for example: the light that the second road luminescence unit sends not is to be received by the second road light receiving unit, but is subjected to light by the first via or Third Road light receiving unit.But in the use of photo-voltaic area sensor, break down sometimes and cause cisco unity malfunction, and the self check of photo-voltaic area sensor at present and the deficiency of fault diagnosis functions, the reason by the device of photo-voltaic area sensor own of whether can not instant diagnosis being out of order causes, therefore need a kind of photo-voltaic area sensor can be in start or the process of using on the market, as required the duty of this photo-voltaic area sensor is checked, self check just, by self check, find whether this area light electric transducer is working properly, determine possible fault type so that in time handle.
Summary of the invention
At existing in the prior art because the self check and the fault diagnosis functions deficiency of photo-voltaic area sensor, cause to judge area light electric transducer self and whether have the problem of fault, the purpose of this utility model provides a kind of fault self-diagnosis device of photo-voltaic area sensor passage, not only can judge area light electric transducer self and whether have fault, but also can judge the type of area light electric transducer faults itself very intuitively.
For achieving the above object, the utility model adopts following technical scheme:
A kind of fault self-diagnosis device of photo-voltaic area sensor passage, comprise illuminator, light-receiving device and controller, described illuminator comprises several luminescence units, luminous sweep circuit and luminous scan control circuit, the input end of described luminous sweep circuit is connected with luminous scan control circuit respectively, and the output terminal of luminous sweep circuit is connected with corresponding luminescence unit respectively; Described light-receiving device comprises with the corresponding light receiving unit of luminescence unit, is subjected to the photoscanning circuit and is subjected to the photoscanning control circuit, the described input end of photoscanning circuit that is subjected to is connected with being subjected to the photoscanning control circuit respectively, be connected with corresponding light receiving unit respectively by the output terminal of photoscanning circuit; Controller is connected with illuminator and light-receiving device respectively and realizes that two-way signaling transmits, and controller is also controlled luminous scan control circuit and is subjected to the photoscanning control circuit to realize switching synchronously.
Described luminous scan control circuit comprises luminous scanning commutation circuit, luminous directional light sweep circuit, luminous downward cross light sweep circuit and luminous upwards cross light sweep circuit, the input end of described luminous scanning commutation circuit is connected with controller, and the output terminal of luminous scanning commutation circuit switches between the input end of the input end of the input end of luminous directional light sweep circuit, luminous downward cross light sweep circuit and luminous upwards cross light sweep circuit respectively;
Describedly comprised with described luminous scanning commutation circuit realizes switching synchronously by the photoscanning control circuit to be subjected to the photoscanning commutation circuit, to be subjected to parallel light photoscanning circuit, to be subjected to the downward cross light sweep circuit of light and to be subjected to the light cross light sweep circuit that makes progress, the described input end of photoscanning commutation circuit that is subjected to is connected with controller, the output terminal that is subjected to the photoscanning commutation circuit respectively at the input end that is subjected to parallel light photoscanning circuit, be subjected to the input end of the downward cross light sweep circuit of light and made progress by light to switch between the input end of cross light sweep circuit.
Described fault self-diagnosis device also comprises manual self check button, and described manual self check button is located on the controller.
Compared with prior art, adopt the fault self-diagnosis device of a kind of photo-voltaic area sensor passage of the present utility model, comprise illuminator, light-receiving device and controller, described illuminator comprises several luminescence units, luminous sweep circuit and luminous scan control circuit, the input end of described luminous sweep circuit is connected with luminous scan control circuit respectively, and the output terminal of luminous sweep circuit is connected with corresponding luminescence unit respectively; Described light-receiving device comprises with the corresponding light receiving unit of luminescence unit, is subjected to the photoscanning circuit and is subjected to the photoscanning control circuit, the described input end of photoscanning circuit that is subjected to is connected with being subjected to the photoscanning control circuit respectively, be connected with corresponding light receiving unit respectively by the output terminal of photoscanning circuit; Controller is connected with illuminator and light-receiving device respectively and realizes that two-way signaling transmits, and controller is also controlled luminous scan control circuit and is subjected to the photoscanning control circuit to realize switching synchronously.After starting the photo-voltaic area sensor, controller will be communicated by letter after self-test signal is sent to illuminator and light-receiving device respectively, and illuminator and light-receiving device are sent to controller with the reply data signal respectively; Then, after controller was sent to illuminator and light-receiving device respectively with the logical light self-test signal of passage mistake, light-receiving device was sent to controller with the shading status signal of each light receiving unit; Then, after controller was sent to illuminator and light-receiving device respectively with passage mistake shading self-test signal, light-receiving device was sent to controller with the logical light state signal of each light receiving unit.Whether the power lead that the communication self check is used for detecting illuminator, light-receiving device and controller in the photo-voltaic area sensor is connected normal with order wire, power lead or order wire connection error are locked into communication failure, controller can send the indication of communication failure, the passage self check that enters next step if communication is normal.The passage self check comprises logical light self check of passage mistake and passage mistake shading self check, and the luminescence unit that the logical light self check of passage mistake is a closing passage is analyzed the light receiving unit data.Judge whether each passage is full shading state, if some or several passage is judged as logical light, then can send the indication of the logical optical channel fault of mistake, the pilot lamp of each passage correspondence also can be indicated out of order passage simultaneously.Just can carry out passage mistake shading self check after only finishing the logical light self check step of passage mistake and getting rid of corresponding fault.Passage mistake shading self check is according under the corresponding scan mode, each passage is taken turns to operate successively, whether after to be scanned the finishing each light receiving unit data is carried out analysis and judgement is the all-pass light state, if some or several passages are judged as shading, then can send the indication of mistake shading channel failure, the pilot lamp of each passage correspondence also can be indicated out of order passage simultaneously.Have only and after this trouble shooting, just can carry out next step self check task.If illuminator and light-receiving device do not have correctly in light in the self check process, indication that also can wrong shading channel failure is till correctly to light.The passage self check not only can be diagnosed out of order passage, can also diagnose out is concrete luminescence unit fault or light receiving unit fault, therefore when the fault self-diagnosis devices and methods therefor of photo-voltaic area sensor passage of the present utility model not only can any single optical channel breaks down in the photo-voltaic area sensor, judging exactly is the fault of luminescence unit, still the fault of light receiving unit or luminescence unit and light receiving unit break down simultaneously, two ends that can also in the area light electric transducer, not be in equipment promptly be not first or any two adjacent optical channels of last optical channel situation about breaking down under, judging exactly is that fault has taken place for these two which luminescence units of passage or light receiving unit.
Description of drawings
Fig. 1 is the principle schematic of the fault self-diagnosis device of a kind of photo-voltaic area sensor passage of the present utility model;
Fig. 2 is the principle schematic of embodiment 1 of the present utility model;
Fig. 3 is the principle schematic of embodiment 2 of the present utility model;
Fig. 4 is the principle schematic of embodiment 3 of the present utility model.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
Embodiment
See also shown in Figure 1: the fault self-diagnosis device of a kind of photo-voltaic area sensor passage that the utility model provides, comprise illuminator 11, light-receiving device 12 and controller 13, illuminator 11 comprises 8 luminescence units 1111,1112,1113,1114,1115,1116,1117,1118, luminous sweep circuit 112 and luminous scan control circuit 113, the input end of luminous sweep circuit 112 is connected with luminous scan control circuit 113 respectively, and the output terminal of luminous sweep circuit 112 is connected with corresponding 8 luminescence units 111 respectively.Light-receiving device 12 comprises with corresponding 8 light receiving units 1211,1212,1213,1214,1215,1216,1217,1218 of luminescence unit, is subjected to photoscanning circuit 122 and is subjected to photoscanning control circuit 123, be connected with being subjected to photoscanning control circuit 123 respectively by the input end of photoscanning circuit 122, be connected with corresponding light receiving unit respectively by the output terminal of photoscanning circuit 122.Controller 13 is connected with illuminator 11 and light-receiving device 12 respectively and realizes that two-way signaling transmits, and controller 13 is also controlled luminous scan control circuit 113 and is subjected to photoscanning control circuit 123 to realize switching synchronously.Corresponding luminescence unit and light receiving unit are formed an optical channel, and wherein all to be subjected to the single-chip microcomputer be 13 controls of control core device for each luminescence unit and light receiving unit.Controller 13 comprises control module 132 and realizes the arithmetic element 131 of two-way communications with control module 132.The fault self-diagnosis device also comprises manual self check button (not shown), and manually the self check button is located on the controller 13.
See also luminescence unit shown in Figure 2 1111 and light receiving unit 1211 and form optical channel 1, luminescence unit 1112 and light receiving unit 1212 composition optical channels 2, the rest may be inferred, and luminescence unit 1118 and light receiving unit 1218 are formed optical channels 8.Automatically start a self check when start of photo-voltaic area sensing system powers on, and in course of normal operation, also can manually boot self check by pressing the self check button.Self check comprises communication self check and passage self check:
Communication self check: when self check begins, controller 13 at first sends the self check order of communicating by letter to illuminator 11 with light-receiving device 12, whether can judge it by the reply data of analyzing illuminator 11 and light-receiving device 12 communicates by letter normal, if communication abnormality, controller 13 can send the indication of communication failure, particularly power lead or order wire connection error also is locked into communication failure.The passage self check that enters next step if communication is normal.
The passage self check: the passage self check is made up of promptly two parts: logical light self check of passage mistake and passage mistake shading self check.The logical light self check of passage mistake is the luminescence unit 1111,1112,1113,1114,1115,1116,1117,1118 of closing passage, then the data of light receiving unit 1211,1212,1213,1214,1215,1216,1217,1218 are analyzed, judge whether each optical channel is full shading state, if some or several optical channels are judged as logical light, then can send the indication of the logical optical channel fault of mistake, the pilot lamp of each optical channel correspondence also can be indicated out of order passage simultaneously.Have only and after this trouble shooting, just can carry out passage mistake shading self check, passage mistake shading self check is according to the scan mode that passage takes turns to operate each optical channel to be worked successively, whether after to be scanned the finishing each light receiving unit data is carried out analysis and judgement is the all-pass light state, if some or several optical channels are judged as shading, then can send the indication of mistake shading channel failure, the pilot lamp of each optical channel correspondence also can be indicated out of order passage simultaneously, has only and just can carry out next step self check task after this trouble shooting.If illuminator and light-receiving device do not have correctly in light in the self check process, indication that also can wrong shading channel failure is till correctly to light.The passage self check not only can be diagnosed out of order passage, and can also diagnose out is luminescence unit fault or light receiving unit fault, is that example illustrates concrete diagnostic procedure with passage mistake shading self check below.
When this photo-voltaic area sensor passage mistake shading self check began, core controller 13 at first sent simultaneously in the parallel sweep mode to luminescence unit 1111,1112,1113,1114,1115,1116,1117,1118 and light receiving unit 1211,1212,1213,1214,1215,1216,1217,1218 and carries out channel failure self check scanning.The process of parallel sweep can be in the self check process from optical channel 1 to optical channel 8 each optical channels of opening the photo-voltaic area sensor successively in turn. Light receiving unit 1211,1212,1213,1214,1215,1216,1217,1218 was given core controller 13 with the light situation report that is subjected to of each optical channel after scanning was finished, carry out analyzing and processing by core controller 13, draw diagnostic result, if diagnostic result is the equal non-fault of each optical channel, can affirm that each optical channel is all normal this moment, the channel failure self diagnosis is finished, and can continue to carry out follow-up task.If diagnostic result is for existing passage mistake shading fault, core controller 13 can be judged the optical channel that breaks down by the analyzing and processing to data.Controller 13 these faulty channels of locking promptly send the order of carrying out the channel failure self diagnosis in the cross scan mode simultaneously to illuminator 11 and light-receiving device 12.Cross scan is divided into downward scanning and upwards scans dual mode.
At first, illuminator 11 and light-receiving device 12 are in the order that receives the downward cross scan that controller 13 sends, and each luminescence unit and light receiving unit just carry out the channel failure self diagnosis in downward cross scan mode.
See also fault self-diagnosis device of the present utility model shown in Figure 3 when carrying out downward cross scan mode, luminescence unit 1111 and light receiving unit 1218 do not participate in scanning.The light that luminescence unit 1112 sends is received by the light receiving unit 1211 of adjacent optical channel, in order to distinguish to some extent with the channel definition of parallel sweep, claim this moment luminescence unit 1112 and the optical channel formed of light receiving unit 1211 be the 1st to lower channel, the light that luminescence unit 1113 sends is received as the 2nd to lower channel by the light receiving unit 1212 of adjacent optical channel, the rest may be inferred, and the light that luminescence unit 1118 sends is received as the 7th to lower channel by the light receiving unit 1217 of adjacent optical channel.After cross scan was finished downwards, light-receiving device 12 was informed core controller 13 with the light situation that is subjected to of each passage, carries out analyzing and processing by core controller 13, relatively draws diagnostic result.Be luminescence unit or accept the unit that then the channel failure self diagnosis is finished if can judge the particular location of channel failure this moment, show the passage number of abort situation and fault, and continue to carry out other orders.
If can't judge the particular location of channel failure this moment, core controller 13 sends simultaneously in cross scan mode upwards to illuminator 11 and light-receiving device 12 and carries out the order of channel failure self diagnosis, luminescence unit and light receiving unit carry out the channel failure self diagnosis in the cross scan mode that makes progress, and specifically see also shown in Figure 4.When execution makes progress the cross scan mode, luminescence unit 1118 and light receiving unit 1211 do not participate in scanning, the light that luminescence unit 1111 sends is received by the light receiving unit 1212 of adjacent optical channel, in order to distinguish to some extent with the channel definition of parallel sweep, the optical channel that this moment, luminescence unit 1111 and light receiving unit 1212 were formed is the 1st to upper channel, the light that luminescence unit 1112 sends is called the 2nd to upper channel by light receiving unit 1213 receptions of adjacent optical channel, the rest may be inferred, and the light that luminescence unit 1117 sends is called the 7th to upper channel by light receiving unit 1218 receptions of adjacent optical channel.After upwards cross scan was finished, light-receiving device 12 was informed core controller 13 with the light situation that is subjected to of each passage, carries out analyzing and processing by core controller 13, relatively draws diagnostic result.The particular location that can judge channel failure this moment is luminescence unit or accepts the unit that then the channel failure self diagnosis is finished, and shows the passage number of abort situation and fault, and continues to carry out other orders.
Because the position and the quantity of channel failure are uncertain, so core controller 13 all will be made complicated analysis, processing, judgement and relatively calculating after scanning each time.See also shown in Figure 1 again, the scan command that sends by controller 13, after illuminator 11 receives this order, luminous scan control circuit 113 can activate the scan mode that is consistent with order according to command cue, in a single day scan mode is activated and will makes illuminator 11 work according to the good order trigger sweep circuit of program setting.Simultaneously, light-receiving device 12 also can receive this order, be subjected to photoscanning control circuit 123 to activate the scan mode that is consistent with order according to command cue, in a single day scan mode is activated and will makes light-receiving device 12 work according to the good order trigger sweep circuit of program setting.After scanning is finished, will be subjected to the light data to send to controller 13, and handle these data by controller 13, and send the order that next step need be carried out to illuminator 11 and light-receiving device 12 by light-receiving device 12.
Be example with the monochromatic light channel failure again, can not normally accept light signal if light receiving unit 1212 breaks down, thereby cause the 2nd optical channel to break down, the equal operate as normal of other optical channel.The channel failure self diagnosis can be diagnosed out the fault of the 2nd optical channel when carrying out parallel sweep, can not judge luminescence unit 1112 faults or light receiving unit 1212 faults this moment, carry out downward cross scan then, if only there is the 2nd downward channel failure in diagnostic result, then can conclude it is the fault of light receiving unit 1212, carry out downward cross scan, if only there is the 1st downward channel failure in diagnostic result, luminescence unit 1112 faults are described, if diagnostic result is the 1st downward channel failure and the 2nd downward channel failure, illustrate that luminescence unit 1112 and light receiving unit 1212 all have fault.
When carrying out parallel sweep, if faulty channel is optical channel 1 or optical channel 8, execute downward cross scan then, it is not comprehensive to execute the channel failure position that draws behind the downward cross scan, as Fig. 3 and shown in Figure 4, downwards cross scan and upwards cross scan only scanned 7 optical channels, if optical channel 1 simultaneous faults of optical channel of luminescence unit 1 and light receiving unit then need to execute upwards that cross scan could correctly comprehensively judge.Suppose to carry out to diagnose out in the parallel sweep self diagnosis process and have only the 1st optical channel fault, because can not judge luminescence unit 1111 faults or light receiving unit 1211 faults this moment, be downward cross scan mode self diagnosis so need next step self diagnosis of execution passage self diagnosis.If there is not fault in cross scan mode self diagnosis result for there being passage, can conclude then and have only luminescence unit 1111 to have fault that the passage self check is finished downwards.If only there is the 1st downward channel failure in diagnostic result for being still, can conclude that there is fault in light receiving unit 1211 this moment, but whether luminescence unit 1111 exists fault, can't judge, luminescence unit 1111 is the i.e. not work that does not participate in scanning in the downward cross scan self diagnosis process because carry out.At this moment, the i.e. cross scan mode self diagnosis upwards of the next procedure that can continue to carry out the passage self diagnosis.If upwards there is not fault in cross scan mode self diagnosis result for there being passage, then can conclude and have only light receiving unit 1211 to have fault, if diagnostic result is for only existing the 1st channel failure upwards, can conclude that also there is fault in luminescence unit 1111 this moment, and promptly luminescence unit 1111 and light receiving unit 1211 all have fault.So far passage self check is finished.
From above descriptive analysis as can be seen, when any two adjacent optical channels break down simultaneously, as long as do not have first or last optical channel in these two optical channels, these two fault optical channels all can have the non-fault optical channel of an operate as normal adjacent with them like this.Use principle of the present utility model, can be respectively by utilizing adjacent non-fault optical channel, the concrete trouble unit of judging these two faulty channels is which luminescence unit or which light receiving unit.
Luminous scan control circuit 113 comprises luminous scanning commutation circuit 1131, luminous directional light sweep circuit 1132, luminous downward cross light sweep circuit 1133 and luminous upwards cross light sweep circuit 1134, the input end of luminous scanning commutation circuit 1131 is connected with controller 13, and the output terminal of luminous scanning commutation circuit 1131 switches between the input end of the input end of the input end of luminous directional light sweep circuit 1132, luminous downward cross light sweep circuit 1133 and luminous upwards cross light sweep circuit 1134 respectively.
Comprised with luminous scanning commutation circuit 1131 realizes switching synchronously by photoscanning control circuit 123 and be subjected to photoscanning commutation circuit 1231, be subjected to parallel light photoscanning circuit 1232, be subjected to the downward cross light sweep circuit 1233 of light and be subjected to the light cross light sweep circuit 1234 that makes progress, be connected with controller 13 by the input end of photoscanning commutation circuit 1231, the output terminal that is subjected to photoscanning commutation circuit 1231 is respectively at the input end that is subjected to parallel light photoscanning circuit 1232, be subjected to the input end of the downward cross light sweep circuit 1233 of light and made progress by light to switch between the input end of cross light sweep circuit 1234.
Those of ordinary skill in the art will be appreciated that, above embodiment is used for illustrating the purpose of this utility model, and be not with opposing qualification of the present utility model, as long as in essential scope of the present utility model, all will drop in the scope of claim of the present utility model variation, the modification of the above embodiment.
Claims (3)
1. the fault self-diagnosis device of a photo-voltaic area sensor passage is characterized in that:
Comprise illuminator, light-receiving device and controller, described illuminator comprises several luminescence units, luminous sweep circuit and luminous scan control circuit, the input end of described luminous sweep circuit is connected with luminous scan control circuit respectively, and the output terminal of luminous sweep circuit is connected with corresponding luminescence unit respectively; Described light-receiving device comprises with the corresponding light receiving unit of luminescence unit, is subjected to the photoscanning circuit and is subjected to the photoscanning control circuit, the described input end of photoscanning circuit that is subjected to is connected with being subjected to the photoscanning control circuit respectively, be connected with corresponding light receiving unit respectively by the output terminal of photoscanning circuit; Controller is connected with illuminator and light-receiving device respectively and realizes that two-way signaling transmits, and controller is also controlled luminous scan control circuit and is subjected to the photoscanning control circuit to realize switching synchronously.
2. fault self-diagnosis device as claimed in claim 1 is characterized in that:
Described luminous scan control circuit comprises luminous scanning commutation circuit, luminous directional light sweep circuit, luminous downward cross light sweep circuit and luminous upwards cross light sweep circuit, the input end of described luminous scanning commutation circuit is connected with controller, and the output terminal of luminous scanning commutation circuit switches between the input end of the input end of the input end of luminous directional light sweep circuit, luminous downward cross light sweep circuit and luminous upwards cross light sweep circuit respectively;
Describedly comprised with described luminous scanning commutation circuit realizes switching synchronously by the photoscanning control circuit to be subjected to the photoscanning commutation circuit, to be subjected to parallel light photoscanning circuit, to be subjected to the downward cross light sweep circuit of light and to be subjected to the light cross light sweep circuit that makes progress, the described input end of photoscanning commutation circuit that is subjected to is connected with controller, the output terminal that is subjected to the photoscanning commutation circuit respectively at the input end that is subjected to parallel light photoscanning circuit, be subjected to the input end of the downward cross light sweep circuit of light and made progress by light to switch between the input end of cross light sweep circuit.
3. fault self-diagnosis device as claimed in claim 1 is characterized in that:
Described fault self-diagnosis device also comprises manual self check button, and described manual self check button is located on the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201019153U CN202025096U (en) | 2011-04-09 | 2011-04-09 | Fault self-diagnosis device for photoelectric area sensor channel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201019153U CN202025096U (en) | 2011-04-09 | 2011-04-09 | Fault self-diagnosis device for photoelectric area sensor channel |
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| CN202025096U true CN202025096U (en) | 2011-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011201019153U Expired - Lifetime CN202025096U (en) | 2011-04-09 | 2011-04-09 | Fault self-diagnosis device for photoelectric area sensor channel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279423A (en) * | 2011-04-09 | 2011-12-14 | 无锡精工泰创电气有限公司 | Fault self diagnosis apparatus for photoelectric area sensor channel and method thereof |
| CN105005093A (en) * | 2015-06-23 | 2015-10-28 | 深圳怡化电脑股份有限公司 | Detection circuit of opposite-emitting type photoelectric sensor |
-
2011
- 2011-04-09 CN CN2011201019153U patent/CN202025096U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102279423A (en) * | 2011-04-09 | 2011-12-14 | 无锡精工泰创电气有限公司 | Fault self diagnosis apparatus for photoelectric area sensor channel and method thereof |
| CN102279423B (en) * | 2011-04-09 | 2012-11-28 | 无锡精工泰创电气有限公司 | Fault self diagnosis apparatus for photoelectric area sensor channel and method thereof |
| CN105005093A (en) * | 2015-06-23 | 2015-10-28 | 深圳怡化电脑股份有限公司 | Detection circuit of opposite-emitting type photoelectric sensor |
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