JP2006029902A - Apparatus for emitting, receiving, and relaying trigger signal light, trigger signal transmission system, and processing system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To implement the transmission of trigger signals with extremely low delay to, for example, perform highly accurately synchronized instantaneous voltage drop examination. <P>SOLUTION: This apparatus is constituted by providing mounting both a light emitting apparatus 16 for emitting flashes on the basis of trigger signals and a light receiving apparatus 17 for receiving the flashes and photoelectrically converting them into trigger signals to each of instantaneous voltage drop examining apparatuses 10 provided with a memory recorder function 11 for monitoring and recording analog signals and logic signals and installed at a plurality of locations of production lines. When the memory recorder function 11 of an instantaneous voltage drop examining apparatus 10 detects the occurrence of an instantaneous voltage drop, a trigger signal is generated, monitoring information is recorded and stored, and the light emitting apparatus 16 is simultaneously made to emit a flash. The instantaneous voltage drop examining apparatus 10 also generates the trigger signal when the light receiving apparatus 17 receives a flash from another apparatus and similarly processes it. It is therefore possible to transmit trigger signals in a short time, record and store monitoring information, and perform instantaneous voltage drop examination. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to an apparatus for transmitting a trigger signal. More specifically, the present invention realizes transmission of a trigger signal with very little delay by using flash, for example, enabling execution of instantaneous event grasping processing. It relates to what can be done.

  Conventionally, when various devices are linked to execute a desired process, it is often used to connect the various devices and transmit a timing for executing the desired process as a trigger signal.

  For example, in a line in which various devices that perform power supply from a power supply and perform desired operations are connected by wire connection so that a trigger signal can be transmitted so as to perform a series of processes in cooperation, the line Is constructed (see, for example, Patent Document 1).

As described above, there is a case where there is a device that is greatly influenced by voltage fluctuation in a device that draws power supply power from a distribution board to which commercial power is connected and is connected in parallel or connected in series. In such an apparatus, when a voltage drop occurs instantaneously (including a stop) in the power supplied from the power supply, the processing operation may be interrupted. For this reason, depending on the line, a voltage sag investigation device that detects a drop in the power supply voltage and a voltage sag such as an uninterruptible power supply (UPS) and superconducting energy storage (SMES) A compensation device may be provided (see, for example, Patent Document 2).
JP 2001-52280 A JP 2003-294791 A

  However, since such a conventional voltage sag compensator is expensive, it cannot be included in many devices. For this reason, it is necessary to specify a device that operates effectively by providing this voltage sag compensator. If a problem occurs in the line, is the factor sag (decrease in power supply voltage)? It is necessary to judge clearly whether or not. Furthermore, even if the voltage sag is a factor, it is necessary to specify whether the voltage sag occurs in the commercial power or the power supply voltage in the line.

  Here, in order to easily investigate and confirm the status of various devices on the line, install a survey device for each survey target such as a device, for example, based on the time to time, The results of each survey can be combined and analyzed.

  However, when investigating whether or not there is a sag in various devices on the line, if the timekeeping time is slightly shifted, it is impossible to synchronize and analyze the power supply frequency. In order to solve this problem, it is conceivable to connect an investigation apparatus so as to use a common time or to transmit a trigger signal in the same manner as a line. However, in production lines and the like, it is difficult to route a signal transmission line unrelated to the line into the factory for investigation.

  Therefore, the present invention is beneficial to both the power company and the user to cooperate so that the investigation of the instantaneous drop can be easily performed so that the electric power can be appropriately used with the optimum equipment. Therefore, it is possible to transmit a trigger signal with very little delay without laying a wiring for transmitting the trigger signal, for example, to enable an instantaneous drop survey synchronized with high accuracy. With the goal.

  The invention of a trigger signal light emitting device that solves the above-mentioned problems is a flash means for emitting a flash, a signal input means for receiving a trigger signal, and an apparatus for receiving a flash when a trigger signal is input from the signal input means. And a control means for causing a flash light to be emitted immediately from the flash means toward the head.

  In the present invention, a flash can be emitted immediately upon the input of a trigger signal, and the input of the trigger signal can be received and transmitted to a trigger signal light receiving device or the like by an instantaneous strong light flash. Therefore, it is possible to immediately transmit the trigger signal input without laying a wiring for transmitting the trigger signal between the devices.

  The invention of a trigger signal light receiving device that solves the above problems includes a photoelectric conversion means that receives light to perform photoelectric conversion, a signal output means that outputs a trigger signal, and a signal output means when the photoelectric conversion means receives flash light. And a control means for outputting a trigger signal.

  In the present invention, a trigger signal can be output immediately by receiving and photoelectric conversion of flash light, and a trigger signal from a trigger signal light emitting device or the like can be transmitted by flash light. Therefore, it is possible to immediately receive and output the input of the trigger signal without laying a wiring for transmitting the trigger signal between the devices.

  The invention of a trigger signal light relay device that solves the above problems includes a flash unit that emits flash light, a photoelectric conversion unit that receives light and performs photoelectric conversion, and a device that receives flash light when the photoelectric conversion unit receives the flash light. Control means for emitting a flash from the flash means.

  In the present invention, it is possible to immediately emit a flash by receiving and photoelectrically converting the flash, and it is possible to relay and transmit the received flash by using a flash of intense light as it is. Therefore, it is possible to immediately transmit the flash light without laying a wiring for transmitting the trigger signal between the devices.

  A first invention of a trigger signal transmission system that solves the above problems includes the trigger signal light emitting device and the trigger signal light receiving device of the above invention, and immediately flashes when a trigger signal is input to the trigger signal light emitting device. The trigger signal light receiving device emits a trigger signal immediately after receiving the flashlight.

  In the present invention, a trigger light is emitted from the trigger signal light emitting device immediately upon the input of the trigger signal, and the trigger signal light receiving device receives and photoelectrically converts the instantaneous strong light flash light to immediately output the trigger signal. it can. Therefore, the trigger signal can be immediately transmitted and input / output as a flash without laying a wiring for transmitting the trigger signal between the devices.

  A trigger signal transmission system according to a second aspect of the present invention that solves the above-described problem includes the trigger signal light repeater according to the present invention, in addition to the specific matter of the first invention, and the trigger signal light emitting device emits a flash signal that triggers light. The relay device relays the trigger signal light receiving device to receive light.

  In the present invention, the flash light from the trigger signal light emitting device or the like is received and photoelectrically converted, and the flash light can be immediately emitted toward the trigger signal light receiving device or the like, and the flash light can be relayed and transmitted as it is. Therefore, the trigger signal can be immediately transmitted and input / output as it is without flashing, even between devices that cannot transmit flash directly because of the presence of a shield.

  An invention of a processing system that solves the above-described problems includes a trigger signal transmission system (first or second invention) according to the invention, a signal generation unit that generates a trigger signal based on a preset condition, and a trigger signal Is a processing system that executes a preset process when receiving a light, and that receives the flash light from the emission of the flash light based on the generation of the trigger signal within at least several cycles of the power supply frequency. is there.

  In this invention, the trigger signal generated according to the setting condition is immediately transmitted from the trigger signal light emitting device to the trigger signal light receiving device by flashing, and then output as the trigger signal, and the setting process is executed by the trigger signal. Therefore, it is possible to execute a desired process by transmitting the trigger signal within one cycle of the power supply frequency, or at least within several cycles, without laying a wiring for transmitting the trigger signal between the devices.

  According to the present invention, the trigger signal can be received and photoelectrically changed and transmitted as an instantaneous strong light flash, and the trigger signal can be transmitted even between devices separated from each other without specially laying a wiring for transmitting the trigger signal. Can be input and output immediately. Therefore, the transmission of the trigger signal with almost no delay can be realized without performing any special installation work, and the trigger signal can be input and output in a short time to execute a desired process.

  For example, it is possible to investigate the voltage sag for each device in synchronization with the power supply frequency unit, specify the location where the voltage sag occurs or the area affected by the voltage sag, and use the appropriate power in the optimal equipment. Can be realized.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, the best embodiment of the invention will be described with reference to the drawings. FIGS. 1-9 is a figure which shows an example of the sag investigation system which is 1st Embodiment of the processing system which concerns on this invention.

  FIG. 1 is a diagram showing an example of equipment installed in a factory, and a distribution board 101 that is connected to a substation equipment and distributes commercial power in the factory is installed. The distribution board 101 is connected to the production line equipment 102, the control boards 103 and 104, the sequencer 105, the display board 106, and the computer 107 in the production line 100.

  The production line equipment 102 includes, for example, a belt conveyor that conveys a product and various devices that process and inspect the product. The production line facility 102 is supplied with power from the distribution board 101 or relayed via another device. Various operations are executed and operated by supplying power.

  The control panel 103 receives power supply from the distribution board 101, and exchanges various control signals, detection signals, and the like with the control panel 104, the sequencer 105, and the like, so as to control the assigned portions of the production line equipment 102 in an integrated manner. To do. Similarly, the control panel 104 receives power supply from the distribution board 101 and controls the assigned part of the production line equipment 102 and outputs an operation signal based on a control signal, a detection signal, and the like to the computer 107.

  The sequencer 105 receives power supply from the distribution board 101 and receives various control signals and detection signals from the control panels 104 and 105 and controls various timing signals for operating the production line equipment 102. The data is output to the panels 104 and 105 and the display panel 106. The display panel 106 receives various timing signals sent from the sequencer 105 and displays and outputs the operating status of the production line facility 102 by turning on / off / flashing the pilot lamps and displaying various instruments. The computer 107 is constituted by, for example, a personal computer, a monitor, etc., receives an operation signal sent from the control panel 104, accumulates the operation results, the operation status, and the like and outputs them on the monitor.

  In this production line 100, a plurality of voltage sag survey devices 10 and signal relay devices 20 are installed, and these voltage sag survey devices 10 and signal relay devices 20 are provided with batteries and batteries, so that a distribution board 101 is provided. Constitutes an instantaneous voltage drop investigation system that can be operated without receiving power supply. Note that the voltage sag investigation device 10 and the signal relay device 20 may be provided with an uninterruptible power supply device or the like and connected to a commercial power supply.

  As shown in FIG. 2, the voltage drop investigation device 10 has a memory recorder function 11 capable of recording a plurality of waveforms, and can input voltage waveforms for a plurality of channels as analog signals as they are. A logic result (0/1 signal) based on electrical signals for a plurality of channels can be input as a logic signal via the logic probe 11a. For example, as shown in FIG. 3, the voltage drop investigation device 10 can input and record four AC voltage waveforms as they are, and can input and record four logic signals. The memory recorder function 11 converts an analog signal into a digital signal by an analog (A) / digital (D) converter 11b (shown in FIG. 7) in order to perform arithmetic processing by a CPU (central processing unit) as will be described later.・ Enter and process.

  Specifically, as the analog input of the voltage sag investigation device 10, the voltage can be detected in parallel without being affected, so a voltmeter is directly connected to the wiring or circuit contact of the production line 100 to obtain an analog voltage signal. Input the waveform. On the other hand, since the current and the circuit of the production line 100 are tampered with, the clamp type current sensor (monitoring means) shown in FIG. ) 12 is connected. Here, when the clamp-type current sensor 12 is used as a detection target for a wiring through which a weak current flows, for example, a wiring for exchanging digital signals (digital signal), as shown in FIG. What is necessary is just to wind the electric wire D of the detection object around the clamp part 12a so that the electromagnetic induction which impedes efficiency may not occur.

  Further, as shown in FIG. 5, a magnetic field detection sensor (monitoring means) 13 such as a reed switch 13a is installed in the vicinity of the relay 113 in the circuit of the production line 100 as a logic input of the voltage drop investigation device 10. Has been. This magnetic field detection sensor 13 detects a change in the magnetic field when the coil 113a of the relay 113 functions and inputs it as a logic signal via the logic probe 11a. The magnetic field detection sensor 13 includes the reed switch 13a in the container 13b. However, the magnetic field detection sensor 13 is not limited to the reed switch 13a, and may be, for example, a hall means, an MR means (magnetoresistance effect means), or the like.

  Further, as a logic input of the voltage drop investigation device 10, as shown in FIG. 6, an optical sensor (monitoring means) 14 such as a phototransistor 14a is installed at the facing position of the pilot lamp 114 in the circuit of the production line 100. It is connected. The optical sensor 14 detects a change in light intensity when the pilot lamp 114 is turned on / off / flashes, and inputs the change as a logic signal through the logic probe 11a. The optical sensor 14 is a container in which a phototransistor 14a is housed in a container 14b in which a cylindrical inner peripheral surface is processed into a reflection surface. Also good.

  Returning to FIG. 2, the voltage drop investigation device 10 is attached such that the light emitting device 16 and the light receiving device 17 can exchange electric signals via the trigger input / output device 18 illustrated in FIG. 7. The light emitting device 16 is constituted by a so-called strobe device that immediately emits a strong flash of light by instantaneously passing a high voltage current through a discharge tube (flash means) 16a. In the light emitting device 16, a condenser lens 16b for emitting the flash light as parallel light is attached to the front surface of the discharge tube 16a. A light collector is attached so as to reflect toward the front side. On the other hand, the light receiving device 17 is provided with a phototransistor (photoelectric conversion means) 17a that photoelectrically converts received light and outputs an electrical signal. In the light receiving device 17, a condensing lens 17b is attached to the front side of the phototransistor 17a so as to collect light from the outside onto the phototransistor 17a, and the phototransistor 17a does not receive unnecessary light. Thus, a disturbance prevention cover 17c extending toward the front side of the condenser lens 17b is formed.

  As shown in FIG. 7, the voltage sag survey device 10 includes a CPU (central processing unit) 31, a main memory 32, an auxiliary memory 33, a display control device 34, and a communication control device 35 that are connected to a bus 36. The logic probe 11a that realizes the input of the logic signal, the A / D converter 11b that realizes the input of the analog signal, and the exchange of the trigger signal described later between the light emitting device 16 and the light receiving device 17 The trigger input / output device 18 realizing the above is connected to the bus 36 via the input / output control device 37. Thereby, the sag investigation apparatus 10 implement | achieves exchanges, such as an analog signal, a logic signal, and a trigger signal synchronizing with operation | movement of CPU31, and performs the various processes as a sag investigation system.

  Specifically, the CPU 31 executes various processes in accordance with control programs and parameters stored in advance in the main memory 32. As shown in FIG. Various processing results such as voltage waveforms detected via the logic probe 11a and the A / D converter 11b at the time of an accident due to a momentary drop are displayed on the display 34a by the display controller 34. The input / output control device 37 is connected with an operation switch 38 for performing various input operations and a printer 39 for printing out the same contents as various processing results displayed on the display 34a. Yes. The auxiliary memory 33 is a memory card that can be attached and detached, and is used when data of various processing results is stored for a long period of time or read into a personal computer or the like for analysis. The communication control device 35 realizes remote control and data communication by wired connection or wireless connection to a personal computer or the like.

  For example, as shown in FIG. 8, the CPU 31 performs analog input from the clamp-type current sensor 12 shown in FIG. The current (analog signal) is repeatedly sampled (monitored) and temporarily stored in the auxiliary memory 33 or the like, and an arithmetic process for comparing the analog signal with a parameter such as a preset threshold value is performed. Thus, it is confirmed whether or not an instantaneous drop (including instantaneous interruption, the same applies hereinafter) occurs in the production line 100. At this time, the CPU 31 confirms (detects) the occurrence of a sag in the investigation target portion of the production line 100 because the peak value of the detected voltage / current (analog signal) falls below a threshold value. In this case, a trigger signal is immediately generated and output to the trigger input / output device 18 via the input / output control device 37 so that the light emitting device 16 emits a flash, and at the same time, the timing is set in advance. An analog signal and a logic signal in a certain period are stored and held (recorded) in the main memory 32 so as to be rewritable. That is, the CPU 31 constitutes detection means and signal generation means, and the main memory 32 constitutes recording means.

  Similarly, the CPU 31 similarly receives a logic signal (logic result) corresponding to the state of the relay 113 and the pilot lamp 114 of the production line 100 that is logically input from the magnetic field detection sensor 13 shown in FIG. 5 and the optical sensor 14 shown in FIG. Is repeatedly sampled, and it is confirmed whether or not an instantaneous drop has occurred in the production line 100 by performing arithmetic processing for confirming whether or not it is in a normal state. At this time, the CPU 31 receives a 0/1 signal of a logic signal (failure signal) in accordance with driving / stopping of the relay 113 or turning on / off / flashing of the pilot lamp 114 when the operation is stopped due to the instantaneous drop. Similarly, when a signal is detected and confirmed, a trigger signal is immediately generated and a flash is emitted from the light emitting device 16, and at the same time, an analog signal or a logic signal for a period set in advance to include the timing is generated. It is stored and held in the main memory 32 so as to be rewritable.

  Here, as shown in FIG. 3, the period in which the analog signal and the logic signal are stored / maintained in the main memory 32 is the period before the occurrence of the sag, and is the period before the accident. Is used as post-accident information, so that the influence that appears after the occurrence of the instantaneous voltage drop can be grasped from the analog signal or the logic signal. Specifically, the power supply power of the production line 100 and the voltage / current waveform in the device circuit before and after the occurrence of the sag can be grasped by analog signals, and the operation state of the device can be grasped by logic signals. It is possible to confirm a change caused by the instantaneous drop.

  Note that analog signals and logic signals to be stored and held in the main memory 32 are appropriately displayed on the display 34a, printed out by the printer 39, or personal computer or the like via the communication control device 35. You may make it make an external apparatus transmit automatically. If the occurrence of a sag is not confirmed, the analog and logic signals to be temporarily stored can be set to be stored for a certain period and then discarded, and the occurrence of a sag is confirmed within that storage period. It is designed to avoid wasting memory capacity unnecessarily by holding it available for use. When the memory capacity permits, all of the analog signals and logic signals temporarily stored may be stored. When the analog signal or logic signal stored in the main memory 32 can be wired / wirelessly connected to an external storage device via the communication control device 35, the analog signal or logic signal is sent to the storage device. You may make it preserve | save.

  On the other hand, when there is an input of an electrical signal that is received and photoelectrically converted by the light receiving device 17 via the trigger input / output device 18 or the input / output control device 37, the CPU 31 receives the electrical signal and a preset threshold value. It is confirmed whether or not the light receiving device 17 has received a flash from the outside such as another instantaneous drop investigation device 10 or the like by performing an arithmetic processing for comparing the parameters such as. At this time, even when the light receiving device 17 receives a flash from another light emitting device 16 and a voltage sag occurs in any of the production lines 100, a trigger signal is immediately generated and input / output is performed. It outputs to the trigger input / output device 18 via the control device 37 and emits a flash from the light emitting device 16, and at the same time, it can rewrite the analog signal and logic signal during a preset period to include the timing. Store / hold in the memory 32. Since the light receiving device 17 is generally designed to perform photoelectric conversion when receiving light of a set level or higher, whether the light receiving device 17 receives the flash light by matching the set level with the flash light. It is also possible to omit the calculation process for determining whether or not to perform the process quickly. Further, the calculation processing for determining whether or not the light is received is not performed by the CPU 31 via the input / output control device 37 but by the trigger input / output device 18 as in the signal relay device 20 described later. You may make it light-receive and light-emit a flash rapidly by making it disperse-process.

  Thereby, when the memory recorder function 11 in the own device detects the occurrence of the voltage drop, the voltage sag investigation device 10 records and stores the analog signal and logic signal detected by the memory recorder function 11, A trigger signal can be generated and a flash can be emitted from the light emitting device 16, and an analog signal or a logic signal detected by the memory recorder function 11 in the own device can be generated even when the light receiving device 17 receives the flash of the trigger signal. Recording and storage can be performed, and further, a trigger signal can be generated and a flash can be emitted from the light emitting device 16. In other words, the voltage sag investigation device 10 records and stores changes in analog signals and logic signals associated with the occurrence of a voltage sag in addition to the basic function of investigating whether or not a voltage sag occurs in a monitoring target. Can be transmitted as a trigger signal flash and transmitted to another instantaneous drop investigation device 10, and when the trigger signal flash is received, the trigger signal flash is also transmitted to the other It is possible to relay and transmit to the voltage drop investigation device 10.

  Therefore, as shown in FIG. 9, the plurality of sag investigation devices 10 make the trigger signal between the devices face each other so that the light emitting device 16 and the light receiving device 17 can exchange flash light. The trigger signal for recording and storing the analog signal and the logic signal in the memory recorder function 11 can be immediately input / output by a plurality of units and transmitted without laying the wiring for transmitting the signal. That is, the light emitting device 16 constitutes a signal output means, the light receiving device 17 constitutes a signal input means, and the CPU 31 constitutes a control means, so that the voltage sag investigation device 10 has the trigger signal light emitting device and the trigger signal light receiving. A trigger signal transmission system including the apparatus is configured.

  Here, the signal relay device 20 includes the light emitting device 16 and the light receiving device 17 as in the case of the voltage drop investigation device 10. When the light receiving device 17 receives an external flash, the light emitting device 16 immediately flashes. Is configured to emit. Thus, as shown in FIG. 9, the signal relay device 20 inputs / outputs the trigger signal as a flash and relays it immediately without laying a wiring for transmitting the trigger signal between the devices together with the voltage sag investigation device 10. Can be transmitted. That is, the signal relay device 20 constitutes a trigger signal light repeater, and constitutes a trigger signal transmission system together with the voltage drop investigation device 10.

  Therefore, if any of the voltage sag investigation devices 10 arranged in the production line 100 detects the occurrence of a voltage sag without laying a wiring for transmitting the trigger signal in the production line 100, a trigger signal is generated and others. Can be transmitted directly to the voltage sag survey device 10 or via the other voltage sag survey device 10 or the signal relay device 20, and all monitoring is performed by the voltage sag survey device 10 arranged in the production line 100. The target state change (analog signal or logic signal) can be recorded and stored simultaneously. Therefore, by analyzing the recorded information (monitoring information), it is possible to relate and compare the phenomena that occur at the same time as the sag, and whether the phenomenon is really caused by the sag It is possible to examine and confirm whether it is caused by a sag.

  At this time, the flash light exchanged between the light-emitting device 16 and the light-receiving device 17 can be immediately emitted (emitted) unlike a general light, and the light-receiving device 17 can receive light from the flash emission command to the light-emitting device 16. The transmission delay time required until the light is received can be suppressed to several μsec. For this reason, commercial power is 60 Hz in western Japan, so that one cycle is 16 msec (16000 μsec), which is 1/60 sec, whereas a trigger signal can be transmitted within a sufficiently short time. Even if the monitoring target changes, it is possible to record the state changes at a plurality of locations on the production line 100 at the same time without delaying the occurrence of the instantaneous drop so as not to be recorded. In eastern Japan, since one cycle is 20000 μsec at 50 Hz, similarly, state changes at a plurality of locations on the production line 100 can be simultaneously recorded without delay.

  As described above, in the present embodiment, the trigger signal is emitted, received, and photoelectrically changed as an instantaneous strong light flash between the voltage sag investigation devices 10 and the signal relay devices 20 arranged at a plurality of locations on the production line 100. The trigger signal can be immediately input / output between the sag investigation apparatus 10 and the signal relay apparatus 20 that are separated without specially laying the wiring for transmitting the trigger signal. The investigation device 10 can be operated at the same time to execute a desired voltage drop investigation process. Therefore, it is possible to analyze by associating the phenomenon (apparatus state) that occurs at the same time as the sag, and to analyze it, for example, whether the malfunction in the production line 100 is caused by the sag or the commercial power. It is possible to identify the cause of the failure, such as whether it is caused by a sag.

  As a result, voltage / current waveforms and device states that change in frequency units of power can be obtained simply by arranging the voltage drop investigation device 10 and the signal relay device 20 without laying work such as wiring unrelated to the production line 100. For example, it is possible to identify the location where an insufficiency occurs, which is a cause of inconvenience in the production line 100, and the location where an inconvenience occurs due to the instantaneous drop. Therefore, it is possible to clarify the optimal installation location of the uninterruptible power supply and the like, and to take measures to make it possible to use power effectively.

  Next, FIG. 10 to FIG. 12 are diagrams showing an example of the instantaneous drop investigation system which is the second embodiment of the processing system according to the present invention. Since the present embodiment is configured in substantially the same manner as the above-described embodiment, the same reference numerals are given to the same configurations and the characteristic portions will be described using the drawings.

  In FIG. 10, the sag investigation device 10 is installed in the production line 100 illustrated in FIG. 1 together with the signal relay device 20 to construct a sag survey system. Instead of the condensing lens 17b, a light receiving device 47 including a reflecting mirror 47b formed in a curved shape is attached. In this light receiving device 47, the mirror surface of the reflecting mirror 47b is formed so as to collect the incident light on the bottommost center of the center where the phototransistor 17a is installed, and the light collected on the phototransistor 17a. The intensity of incident light can be made larger than in the case of the condensing lens 17b by taking a larger range of the incident optical path (angle).

  Thereby, the flashlight from the other sag investigation apparatus 10 and the signal relay apparatus 20 can be received with high sensitivity, and the trigger signal can be transmitted with high reliability. Here, it goes without saying that the light receiving device 17 of the signal relay device 20 may be replaced with the light receiving device 47.

  In addition, as shown in FIG. 11, in this instantaneous drop investigation device 10, instead of the magnetic field detection sensor 13, the magnetic field detection sensor 43 detects a magnetic field change caused by the coil 113 a of the relay 113 of the production line 100 and generates a logic signal. It is installed to input. In this magnetic field detection sensor 43, three reed switches 13a are connected in parallel in the container 13b so that each of the XYZ directions becomes a detection direction, and the magnetic field in each direction of XYZ when the coil 113a of the relay 113 functions. Can be detected respectively. Needless to say, the reed switch 13a does not necessarily have to be installed in the XYZ directions.

  Thereby, the magnetic field detection sensor 43 can be installed in the vicinity of the relay 113 of the production line 100 without confirming the direction of the magnetic field generated from the coil 113a when the relay 113 functions.

  Furthermore, in the voltage drop investigation device 10, as shown in FIG. 12, an optical fiber 44 is installed so as to be interposed between the pilot lamp 114 and the optical sensor 14 of the production line 100. The optical fiber 44 has one end 44 a for incident / exiting light installed on a side surface so that light from the pilot lamp 114 can enter, and the other end 44 a is a light detection surface of the optical sensor 14. It is installed on the front surface so as to emit light that is guided toward.

  Thereby, the light of the pilot lamp 114 can be guided by the optical fiber 44 and detected by the optical sensor 14 without deteriorating the visibility in the production line 100.

  As described above, in this embodiment, in addition to the operational effects of the above-described embodiment, by replacing with the light receiving device 47, the transmission accuracy of the trigger signal can be improved and a highly reliable voltage drop investigation can be realized. .

  Further, as another aspect of the above-described embodiment, as illustrated in FIG. 13, the voltage sag survey device 10 is illustrated as an example, but instead of the light receiving devices 17 and 47, the voltage sag survey device 10 and the signal relay device 20 are illustrated. In addition, the light receiving device 57 may be attached. The light receiving device 57 is provided with a reflecting mirror 57b on which a mirror surface curved substantially larger than the reflecting mirror 47b of the light receiving device 47 (a curved mirror surface substantially similar to a reflecting mirror such as a flashlight) is formed. A phototransistor 57a is provided at the focal point of the. As a result, the light receiving device 57 can reflect light in a wider range (incident angle) and condense it on the phototransistor 57a, and can detect flash light from the other voltage drop investigation devices 10 and the signal relay device 20 with high sensitivity. Receiving light, the trigger signal can be transmitted with high reliability.

  Although one embodiment of the present invention has been described so far, it is needless to say that the present invention is not limited to the above-described embodiment, and may be implemented in various forms within the scope of the technical idea. For example, an example of installing on a line that performs a cooperative operation will be described. However, the present invention is not limited to this, and it may be configured as a system that monitors a plurality of devices that operate independently and investigates an instantaneous drop. Needless to say.

  In addition, although the voltage drop investigation device 10 and the signal relay device 20 will be described as an example in which a trigger signal is transmitted by a simple flash (so-called white light), the invention is not limited to this. For example, an infrared strobe method is used. Thus, the worker or the like may not be able to recognize the light emission. However, in the case of the infrared strobe method, the intensity of light decreases to suppress visible light, and there are also many cases that emit infrared rays in factories and the like. It becomes easy to receive. From this point of view, it is currently advantageous to employ a method of transmitting a trigger signal by a simple flash as in this embodiment.

  Further, the case where the monitoring means and the recording means monitor and record the analog signal and the logic signal will be described. However, the present invention is not limited to this. For example, a camera for monitoring the processing state of the product in the production line 100 is installed. The video of the monitoring camera may be recorded by a trigger signal at the time of occurrence of an instantaneous drop.

It is a figure which shows an example of the sag investigation system which is 1st Embodiment of the processing system which concerns on this invention, and is an arrangement | positioning figure which shows arrangement | positioning relationship with the equipment of the investigation object. It is a conceptual diagram which shows the schematic whole structure of the instantaneous drop investigation apparatus. It is a wave form diagram which shows the monitoring information which monitors the investigation object. It is a figure which shows the means to monitor the investigation object, (a) is a perspective view which shows the whole structure, (b) is a perspective view which shows the application example. It is a see-through | perspective perspective view which shows the whole structure of the means to monitor the investigation object. It is a see-through | perspective perspective view which shows the whole structure of the means to monitor the investigation object. It is a block diagram which shows the principal part structure of the instantaneous drop investigation apparatus. It is explanatory drawing which shows the process which the instantaneous drop investigation apparatus performs. It is a conceptual diagram which shows transmission of the trigger signal. It is a figure which shows an example of the voltage drop investigation system which is 2nd Embodiment of the voltage drop investigation system which concerns on this invention, and is a conceptual diagram which shows the schematic whole structure of the voltage drop investigation apparatus. It is a see-through | perspective perspective view which shows the whole structure of the means to monitor the investigation object. It is a see-through | perspective perspective view which shows the whole structure of the means to monitor the investigation object. It is a conceptual diagram which shows another aspect, and is a conceptual diagram which shows the schematic whole structure of the voltage drop investigation apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Voltage drop investigation apparatus 11 Memory recorder function 12 Clamp type current sensor 13, 43 Magnetic field detection sensor 14 Optical sensor 16 Light emitting device 16a Discharge tube 16b, 17b Condensing lens 17, 47, 57 Light receiving device 17a, 57a Phototransistor 17c Disturbance prevention Cover 18 Trigger input / output device 20 Signal relay device 31 CPU
32 Main memory 33 Auxiliary memory 34 Display control device 35 Communication control device 37 Input / output control device 38 Operation switch 39 Printer 44 Optical fiber 47b, 57b Reflector 100 Production line 101 Distribution board 102 Production line equipment 103, 104 Control panel 105 Sequencer 106 Display panel 107 Computer 113 Relay 114 Pilot lamp

Claims (6)

  A flash means for emitting a flash, a signal input means for receiving a trigger signal, and a control means for emitting a flash from the flash means toward a device for receiving the flash when the trigger signal is input from the signal input means; A trigger signal light emitting device comprising:   Photoelectric conversion means for receiving light and performing photoelectric conversion, signal output means for outputting a trigger signal, and control means for outputting a trigger signal from the signal output means when the photoelectric conversion means receives flash light. Trigger signal light receiving device.   Flash means for emitting flash light, photoelectric conversion means for receiving and photoelectrically converting light, and control means for emitting flash light from the flash means toward the device that receives the flash light when the photoelectric conversion means receives the flash light. A trigger signal optical repeater comprising: The trigger signal light emitting device according to claim 1 and the trigger signal light receiving device according to claim 2,
A trigger signal transmission system which emits a flash immediately when a trigger signal is input to the trigger signal light emitting device and outputs a trigger signal immediately when the trigger signal light receiving device receives the flash light. A trigger signal optical repeater according to claim 3,
5. The trigger signal transmission system according to claim 4, wherein the trigger signal light relay device relays flash light emitted from the trigger signal light emitting device and causes the trigger signal light receiving device to receive the flash light. 6. The trigger signal transmission system according to claim 4 or 5, signal generation means for generating a trigger signal based on a preset condition, and a process for executing a preset process when the trigger signal is received A system,
A processing system characterized by performing flash light reception from flash emission based on generation of a trigger signal within at least several cycles of a power supply frequency.

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