CN1645158A - Fault inspecting device - Google Patents

Fault inspecting device Download PDF

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Publication number
CN1645158A
CN1645158A CNA2005100043968A CN200510004396A CN1645158A CN 1645158 A CN1645158 A CN 1645158A CN A2005100043968 A CNA2005100043968 A CN A2005100043968A CN 200510004396 A CN200510004396 A CN 200510004396A CN 1645158 A CN1645158 A CN 1645158A
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CN
China
Prior art keywords
aforementioned
heater
value
fault
heater current
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CNA2005100043968A
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Chinese (zh)
Inventor
山本幸义
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Omron Corp
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Omron Corp
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Publication of CN1645158A publication Critical patent/CN1645158A/en
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/02—Foundation pits
    • E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00—Excavations; Bordering of excavations; Making embankments
    • E02D17/06—Foundation trenches ditches or narrow shafts
    • E02D17/08—Bordering or stiffening the sides of ditches trenches or narrow shafts for foundations
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D2220/00—Temporary installations or constructions

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Control Of Resistance Heating (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Testing And Monitoring For Control Systems (AREA)
  • Control Of Temperature (AREA)

Abstract

The present invention provides a failure detection apparatus capable of detecting an open/short failure of an SSR device. In the failure detection apparatus, connected to a thermal control system having an SSR device disposed between a heater and a power supply portion to adjust the amount of electric power supplied to the heater from the power supply portion in response to a thermal control signal, and having a thermal control device for monitoring the temperature of the heater and outputting the thermal control signal to set the temperature of the heater to the target temperature on the basis of the monitored temperature to detect the failure of the SSR device, the failure detection apparatus comprises a thermal control signal decision portion for deciding whether the thermal control signal is in on state or not, a heater current decision portion for deciding whether the heater current between the SSR device and the heater is in on state or not, and an SSR failure decision portion for deciding the failure of the SSR device on the basis of the decided result of the thermal control signal decision portion and the decided result of the heater current decision portion.

Description

Fault inspecting device
Technical field
The present invention relates to a kind of fault inspecting device, it is connected with humidity control system, and this humidity control system has: the well heater of the controlling object of using in industrial furnace well heater, semiconductor cleaning apparatus, the plastic molding press etc. for example; Feed electrical power to the power supply unit of aforementioned well heater; Be disposed at the solid-state relay device (being called the SSR device to place an order) that supplies to the electric weight of aforementioned well heater between these well heaters and the power supply unit, corresponding to the adjustment of adjustment control signal from aforementioned power supply unit; Monitor the temperature of aforementioned well heater, for the temperature of aforementioned well heater being set at target temperature based on this supervision result, and the output aforementioned temperature is regulated the temperature adjustment device of control signal, and this fault inspecting device detects the fault of aforementioned SSR device or aforementioned well heater.
Background technology
All the time, known for example in plastic molding press, humidity control system has: the well heater that penetrates the controlling object that cylinder body disposed; Feed electrical power to the power supply unit of aforementioned well heater; Be disposed at the solid-state relay device (being called the SSR device to place an order) that supplies to the electric weight of aforementioned well heater between these well heaters and the power supply unit, corresponding to the adjustment of adjustment control signal from aforementioned power supply unit; Monitor the temperature of aforementioned well heater, in order based on this supervision result the temperature of aforementioned well heater to be set at target temperature, and the output aforementioned temperature is regulated the temperature adjustment device of control signal.
Adopt this humidity control system, in order to detect the faults such as broken string of well heater rapidly, known have a next fault inspecting device of explanation.
This fault inspecting device, the temperature of storing well heater in advance reaches the controlled quentity controlled variable of the adjustment control signal just often till the target temperature, reach the controlled quentity controlled variable of the adjustment control signal till the target temperature by the temperature of temperature adjustment device instrumentation well heater, relatively this instrumentation controlled quentity controlled variable and the storage in controlled quentity controlled variable just often, the threshold value that surpasses regulation when this comparative result, when the control quantitative change in the instrumentation is big, judge well heater broken string (for example with reference to patent documentation 1).
Adopt the fault inspecting device of this patent documentation 1,, only SSR device monitor temperature is regulated the controlled quentity controlled variable of control signal, just can detect the broken string of well heater even do not use the heater current tester of instrumentation heater current.
In addition, as other fault inspecting device, known have: the current transformer that detects heater current; Output is corresponding to the dc voltage output circuit of the DC voltage of the heater current of this current transformer; This DC voltage of digital conversion and calculate device in the moving average of the input signal repeatedly that is taken into of periodic sampling of regulation; Determine the reference value of heater current according to this moving average that calculates, the relatively reference value of this heater current and this current value, this current value ratio reference value hour is judged as the well heater broken string decision maker (for example with reference to patent documentation 2) of well heater broken string.
Adopt the fault inspecting device of patent documentation 2, calculate the moving average of the input signal repeatedly that is taken in the specified period sampling, determine the reference value of heater current according to this moving average that calculates, the relatively reference value of this heater current and this current value, when this current value ratio reference value hour, be judged as the well heater broken string, even so because the variation of timeliness all the year round of well heater etc. and characteristic variations, by setting reference value once more, also can detect the broken string of well heater really.
Patent documentation 1: the spy opens 2002-343537 communique (with reference to the 0079th section and Figure 14).
Patent documentation 2: real fair 7-41117 communique (with reference to " utility model right claim and Fig. 2).
Yet, though adopt the fault inspecting device of above-mentioned patent documentation 1, reach the controlled quentity controlled variable of the adjustment control signal till the target temperature by the temperature of temperature adjustment device instrumentation well heater, relatively this instrumentation controlled quentity controlled variable and the storage in controlled quentity controlled variable just often, the threshold value that surpasses regulation when this comparative result, when the control quantitative change in the instrumentation is big, be judged as the well heater broken string, but can not judge fault, for example open fault or the short trouble of the SSR device in the humidity control system.
In addition, adopt the fault inspecting device of patent documentation 2, though calculate the moving average of the input signal of obtaining in the specified period sampling repeatedly, determine the reference value of heater current according to this moving average that calculates, the relatively reference value of this heater current and this current value, when this current value ratio reference value hour, be judged as the well heater broken string, even because the variation of timeliness all the year round of well heater etc. and characteristic variations, by setting reference value once more, really the broken string of well heater can be detected, but the well heater broken string life-span before the well heater broken string can not be discerned.
Summary of the invention
The present invention obtains in view of above-mentioned point, and its purpose is to provide a kind of fault inspecting device that can detect the fault of SSR device.
In addition, the present invention also aims to provide a kind of and can discern well heater broken string life-span before the well heater broken string, be the fault inspecting device of partial short-circuit.
In order to reach above-mentioned purpose, fault inspecting device of the present invention is connected with humidity control system, and this humidity control system has: the well heater of controlling object; Feed electrical power to the power supply unit of aforementioned well heater; The SSR device, it is disposed between these well heaters and the power supply unit, adjusts the electric weight that supplies to aforementioned well heater from aforementioned power supply unit corresponding to the adjustment control signal; Temperature adjustment device, it monitors the temperature of aforementioned well heater, for based on this supervision result and the temperature of aforementioned well heater is set at target temperature, the output aforementioned temperature is regulated control signal, this fault inspecting device detects the fault of aforementioned SSR device, this fault inspecting device has: the heater current detection device, and it detects the heater current between aforementioned SSR device and the aforementioned well heater; The 1st decision maker, it judges whether aforementioned temperature is regulated control signal is the 1st required standard or the above controlled quentity controlled variable of the 1st required standard; The 2nd decision maker, it judges that whether by the detected heater current of aforementioned heater current detection device be the 2nd required standard or more than the 2nd required standard; Device for detecting fault, it judges the fault of aforementioned SSR device according to the result of determination of aforementioned the 1st decision maker and the result of determination of the 2nd decision maker.
Fault inspecting device of the present invention, when judging that by aforementioned the 1st decision maker it is the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and judge that by aforementioned the 2nd decision maker aforementioned heater current is not the 2nd required standard or the 2nd required standard when above, aforementioned device for detecting fault is judged to be the SSR open fault of aforementioned SSR device.
Fault inspecting device of the present invention, when judging that by aforementioned the 1st decision maker it is not the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and judge that by aforementioned the 2nd decision maker aforementioned heater current is the 2nd required standard or the 2nd required standard when above, aforementioned device for detecting fault is judged to be the SSR short trouble of aforementioned SSR device.
Fault inspecting device of the present invention has device for informing, and it reports and export the result of determination of aforementioned device for detecting fault.
Fault inspecting device of the present invention, aforementioned heater current detection device has: A/D (mould/number) sampled value acquisition device, it obtains the A/D sampled value of the regulation number of the heater current value between aforementioned SSR device and the aforementioned well heater in specified period; The basic value calculating apparatus, it calculates basic value according to the A/D sampled value of the regulation number that is obtained by aforementioned A/D sampled value acquisition device; Heater current value scaler, the current value that it will calculate by the basic value mean value of squareization of specified period that this basic value calculating apparatus is calculated converts as the heater current value of being judged by aforementioned the 2nd decision maker.
Fault inspecting device of the present invention, aforementioned heater current detection device has: the A/D acquisition device of sampling, it is the heater current value full-wave rectification between aforementioned SSR device and the aforementioned well heater, and obtains the A/D sampled value of regulation number in specified period; Heater current value scaler, the A/D sampled value of this regulation number of its accumulative total will convert as the heater current value of being judged by aforementioned the 2nd decision maker by the current value that the A/D sampled value mean value of squareization after this accumulative total is calculated.
Fault inspecting device of the present invention, has radio communication device with upper equipment and other fault inspecting device wireless connections, by this radio communication device, and aforementioned upper equipment or aforementioned other fault inspecting device between send the result of determination that receives aforementioned device for detecting fault.
In order to reach above-mentioned purpose, fault inspecting device of the present invention is connected with humidity control system, and this humidity control system has: the well heater of controlling object; Feed electrical power to the power supply unit of aforementioned well heater; The SSR device, it is disposed between these well heaters and the power supply unit, adjusts the electric weight that supplies to aforementioned well heater from aforementioned power supply unit corresponding to the adjustment control signal; Temperature adjustment device, it monitors the temperature of aforementioned well heater, for based on this supervision result and the temperature of aforementioned well heater is set at target temperature, the output aforementioned temperature is regulated control signal, this fault inspecting device detects the fault of aforementioned SSR device, this fault inspecting device has: the heater current detection device, and it detects the heater current between aforementioned SSR device and the aforementioned well heater; The partial short-circuit threshold value storage means, it is stored the excess current value before the broken string of aforementioned well heater in advance as the partial short-circuit threshold value; Partial short-circuit threshold determination device, it judges whether this heater current has surpassed the partial short-circuit threshold value that is in the aforementioned partial short-circuit threshold value storage means in the storage when detecting aforementioned heater current by aforementioned heater current detection device; The partial short-circuit decision maker, it is judged as the partial short-circuit of aforementioned well heater when being judged that by aforementioned partial short-circuit threshold determination device aforementioned heater current has surpassed aforementioned partial short-circuit threshold value.
Fault inspecting device of the present invention, has the 1st decision maker, it judges whether aforementioned temperature is regulated control signal is the 1st required standard or the above controlled quentity controlled variable of the 1st required standard, aforementioned partial short-circuit decision maker, when judging that by aforementioned the 1st decision maker it is the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and when judging that by aforementioned partial short-circuit threshold determination device aforementioned heater current has surpassed aforementioned partial short-circuit threshold value, execution is judged as the judgement action of the partial short-circuit of aforementioned well heater, simultaneously, when judging that by aforementioned partial short-circuit threshold determination device aforementioned heater current has surpassed aforementioned partial short-circuit threshold value, and judge that by aforementioned the 1st decision maker aforementioned temperature regulates control signal when not being the 1st required standard or the controlled quentity controlled variable more than the 1st required standard, forbid being judged as the judgement action of the partial short-circuit of aforementioned well heater.
Fault inspecting device of the present invention, has partial short-circuit threshold value adjusting gear, it regulates the setting current value of control signal according to aforementioned temperature, adjust the aforementioned partial short-circuit threshold value that is in the aforementioned partial short-circuit threshold value storage means in the storage, should adjusted partial short-circuit threshold value updated stored in aforementioned partial short-circuit threshold value storage means.
Fault inspecting device of the present invention has device for informing, and it reports and export this result of determination when being judged as the partial short-circuit of aforementioned well heater by aforementioned partial short-circuit decision maker.
Fault inspecting device of the present invention, aforementioned heater current detection device has: A/D sampled value acquisition device, it obtains the A/D sampled value of the regulation number of the heater current value between aforementioned SSR device and the aforementioned well heater in specified period; The basic value calculating apparatus, it calculates basic value according to the A/D sampled value of the regulation number that is obtained by aforementioned A/D sampled value acquisition device; Heater current value scaler, the current value that it will calculate by the basic value mean value of squareization of specified period that this basic value calculating apparatus is calculated converts as the aforementioned heater current value of being judged by aforementioned partial short-circuit threshold determination device.
Fault inspecting device of the present invention, aforementioned heater current detection device has: the A/D acquisition device of sampling, it is the heater current value full-wave rectification between aforementioned SSR device and the aforementioned well heater, and obtains the A/D sampled value of regulation number in specified period; Heater current value scaler, the A/D sampled value of this regulation number of its accumulative total, to convert as the aforementioned heater current value of judging by aforementioned partial short-circuit threshold determination device by the current value that the A/D sampled value mean value of squareization after this accumulative total is calculated.
Fault inspecting device of the present invention, has radio communication device with upper equipment and other fault inspecting device wireless connections, by this radio communication device, and aforementioned upper equipment or aforementioned other fault inspecting device between send the result of determination that receives aforementioned partial short-circuit decision maker.
Fault inspecting device of the present invention according to above-mentioned formation has: judge whether aforementioned temperature is regulated control signal is the 1st decision maker of the above controlled quentity controlled variable of the 1st required standard or the 1st required standard; Judge whether aforementioned heater current is the 2nd required standard or the 2nd above decision maker of the 2nd required standard, based on the result of determination of aforementioned the 1st decision maker and the result of determination of the 2nd decision maker, judge the fault of aforementioned SSR device, thereby can judge the fault of SSR device, for example open fault or short trouble.
According to fault inspecting device of the present invention, when judging that by the 1st judgment means it is the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and judge that by aforementioned the 2nd decision maker aforementioned heater current is not that the 2nd required standard or the 2nd required standard are when above, be judged to be the SSR open fault of aforementioned SSR device, so can differentiate the open fault of SSR device.
According to fault inspecting device of the present invention, judge that by the 1st judgment means it is not the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and judge that by aforementioned the 2nd decision maker aforementioned heater current is that the 2nd required standard or the 2nd required standard are when above, be judged to be the SSR short trouble of aforementioned SSR device, so can differentiate the short trouble of SSR device.
According to fault inspecting device of the present invention, report and export the result of determination of device for detecting fault with device for informing, for example show the output of output or loudspeaker, thereby the user of fault inspecting device can discern the result of determination of device for detecting fault.
According to fault inspecting device of the present invention, the heater current detection device is obtained the A/D sampled value of the regulation number of the heater current value between aforementioned SSR device and aforementioned well heater in specified period, A/D sampled value according to these obtained regulation numbers calculates basic value, the current value that will calculate by the basic value mean value of squareization of specified period that this is calculated, convert as the heater current value of judging by aforementioned the 2nd decision maker, so by obtaining non-simulation, but the heater current value of numeral, can not be subjected to the influence of noise, can guarantee the reaction velocity that the heater current value changes electric current, its result can improve the fault verification precision of SSR device.
According to fault inspecting device of the present invention, aforementioned heater current detection device is with the heater current value full-wave rectification between aforementioned SSR device and the aforementioned well heater, in specified period, obtain the A/D sampled value of regulation number, the A/D sampled value of this regulation number of accumulative total, will be by the current value that the A/D sampled value mean value of squareization after this accumulative total is calculated, convert as the heater current value of judging by aforementioned the 2nd decision maker, so by obtaining non-simulation, but the heater current value of numeral, can not be subjected to the influence of noise, can guarantee the reaction velocity that the heater current value changes electric current, its result can improve the fault verification precision of SSR device.
According to fault inspecting device of the present invention, have and upper equipment and other fault inspecting device wireless connections, the radio communication device that connects of infrared and radio for example, by this radio communication device, and aforementioned upper equipment or aforementioned other fault inspecting device between send the judged result that receives aforementioned device for detecting fault, so in upper equipment or other fault inspecting device side, when omitting distribution, can discern the result of determination of fault inspecting device, that is the fault of SSR device.Its result can discern the fault of SSR device on all in system.
In addition, fault inspecting device of the present invention according to above-mentioned formation, when near the broken string of aforementioned well heater during the life-span, the insulativity of well heater inside descends, the electric current that flows in well heater before the life-span uprises, because have the partial short-circuit threshold value storage means that the excess current value before the lucky broken string of aforementioned well heater is stored in advance as the partial short-circuit threshold value, when detecting aforementioned heater current, judge whether this heater current has surpassed the partial short-circuit in the storage, when judging that aforementioned heater current has surpassed aforementioned partial short-circuit threshold value, be judged as the partial short-circuit of aforementioned well heater, so can discern the partial short-circuit before the well heater broken string, its result, the assurance of the failure cause during owing to the well heater broken string has become easily, can guarantee maintainability.In addition, because the omen before can breaking grip heater, that is partial short-circuit, changing well heater before the well heater broken string just becomes possibility, thereby can guarantee its preventative maintenance.
According to fault inspecting device of the present invention, it has judges whether aforementioned temperature is regulated control signal is the 1st decision maker of the above controlled quentity controlled variable of the 1st required standard or the 1st required standard, when judging that aforementioned temperature is regulated control signal is the 1st required standard or the controlled quentity controlled variable more than the 1st required standard, and judge when aforementioned heater current has surpassed aforementioned partial short-circuit threshold value, be judged as the partial short-circuit of aforementioned well heater, simultaneously, surpassed aforementioned partial short-circuit threshold value even judge aforementioned heater current, when judging that aforementioned temperature adjusting control signal is not the 1st required standard or the controlled quentity controlled variable more than the 1st required standard, forbidding being judged as the judgement action of the partial short-circuit of aforementioned well heater, is not that the state preceding partial short-circuit flase drop of well heater broken string down of the above controlled quentity controlled variable of the 1st required standard or the 1st required standard goes out so can prevent the adjustment control signal really.
According to fault inspecting device of the present invention, regulate the setting current value of control signal according to aforementioned temperature and adjust the aforementioned partial short-circuit threshold value that is in the aforementioned partial short-circuit threshold value storage means in the storage, should adjusted partial short-circuit threshold value renewal be kept in the aforementioned partial short-circuit threshold value storage means, so, even aforementioned temperature is regulated the setting current value of control signal change is arranged, also can be with the corresponding automatically renewal of the partial short-circuit threshold value of setting current value corresponding to this.
According to fault inspecting device of the present invention, it has reports and exports this judged result, for example shows the device for informing of output or loudspeaker output when being judged as the partial short-circuit of aforementioned well heater, so the partial short-circuit that the user of fault inspecting device can discern well heater before just breaking.
According to fault inspecting device of the present invention, aforementioned heater current detection device is obtained the A/D sampled value of the regulation number of the heater current value between aforementioned SSR device and aforementioned well heater in the cycle of regulation, A/D sampled value according to these regulation numbers that obtain calculates basic value, will be by the current value that the basic value mean value of squareization of the specified period that is calculated is calculated, the aforementioned heater current value of being judged as aforementioned partial short-circuit threshold determination device and converting, so by obtaining non-simulation, but the heater current value of numeral, can not be subjected to the influence of noise, can guarantee the reaction velocity that the heater current value changes electric current, its result can improve the judgement precision of the partial short-circuit of well heater before just breaking.
According to fault inspecting device of the present invention, aforementioned heater current detection device is with the heater current value full-wave rectification between aforementioned SSR device and aforementioned well heater, in specified period, obtain the A/D sampled value of regulation number, the A/D sampled value of this regulation number of accumulative total, will be by the current value that the A/D sampled value mean value of squareization after this accumulative total is calculated, convert as the aforementioned heater current value of judging by aforementioned partial short-circuit threshold determination device, so by obtaining non-simulation, but the heater current value of numeral, can not be subjected to the influence of noise, can guarantee the reaction velocity that the heater current value changes electric current, its result can improve the judgement precision of the partial short-circuit of well heater before just breaking.
According to fault inspecting device of the present invention, have and upper equipment and other fault inspecting device wireless connections, the radio communication device that connects of infrared and radio for example, by this radio communication device, and aforementioned upper equipment or aforementioned other fault inspecting device between send the judged result that receives aforementioned partial short-circuit decision maker, so in upper equipment and other fault inspecting device side, when can save distribution, can discern the result of determination of fault inspecting device, that is the partial short-circuit before the well heater broken string.Its result can guarantee well heater relevant maintainability and the preventative maintenance all with system.
Description of drawings
Fig. 1 is the block diagram of all summary formations of the humidity control system of the 1st form of implementation that relevant fault inspecting device of the present invention is shown.
Fig. 2 is the block diagram of the summary formation of the fault inspecting device inside of relevant the 1st form of implementation of expression.
Fig. 3 is the block diagram of the summary formation of the CPU inside in the fault inspecting device of relevant the 1st form of implementation of expression.
Fig. 4 is the block diagram of an example of the heater current instrumentation portion inside in the CPU of relevant the 1st form of implementation of expression.
Fig. 5 is the block diagram of an example of the heater current instrumentation portion inside in the CPU of relevant the 1st form of implementation of expression.
Fig. 6 is the block diagram of the summary formation of the CPU inside in the fault inspecting device of relevant the 2nd form of implementation of expression.
Fig. 7 is the key diagram of system's formation of the humidity control system of relevant other forms of implementation of visual representation.
The block diagram that Fig. 8 constitutes for all summarys of the humidity control system of relevant other forms of implementation of expression.
Embodiment
Below, describe based on the humidity control system of accompanying drawing at the true form that relevant fault inspecting device of the present invention is shown.
(form of implementation 1)
Fig. 1 illustrates the block diagram that the summary of the humidity control system inside of the 1st form of implementation constitutes.
Humidity control system 10 shown in Figure 1 has: the well heater 1 of the controlling object that is disposed in the cylinder body in the Jet forming machine for example; Feed electrical power to the 1A of three-phase alternating-current supply portion (being called power supply unit to place an order) of well heater 1; Be configured in the SSR device 3 that supplies to the electric weight of well heater 1 between these well heaters 1 and the power supply unit 1A, corresponding to the adjustment of adjustment control signal from power supply unit 1A; By the temperature of not shown temperature sensor monitors well heater 1, in order based on this supervision result the temperature of well heater 1 to be set at target temperature, and output temperature is regulated the temperature adjustment device 6 of control signal; Detect the heater current detector 5 (5A, 5B) of the heater current of 1 of SSR device 3 and well heater; According to the switching state of the adjustment control signal of 3 in temperature adjustment device 6 and SSR device and by the switching state of heater current detector 5 detected heater currents, judge the fault inspecting device 4 of the fault of SSR device 3.
Fig. 2 is the block diagram that the summary of fault inspecting device 4 inside of relevant the 1st form of implementation of expression constitutes.
Fault inspecting device 4 shown in Figure 2 has: the adjustment control signal monitoring circuit A that monitors the adjustment control signal that transmits between SSR device 3 and temperature adjustment device 6; Detect heater current detecting circuit B from the heater current of heater current detector 5; Power circuit C to fault inspecting device 4 supply capabilities; Switch input circuit 17 with these fault inspecting device 4 main body switchings; The memory circuit 12 of storing various information; That reports and export various information reports control circuit D; Control the CPU11 of this fault inspecting device integral body; Administer communication interface E with the communication interface of upper computer (being called upper PC to place an order) 100; Detect and reset or the resetting of dump, dump detecting circuit 18.
Adjustment control circuit A, the magnitude of voltage between, SSR device 3 needed to the switching state of differentiating the adjustment control signal and the temperature adjustment device 6 monitors, and this magnitude of voltage is notified to CPU11 via photo-coupler 14.And insulate between adjustment control signal monitoring circuit A and the CPU11, the infrared ray by photo-coupler 14 communicates to connect.In addition, magnitude of voltage is two kinds of 0V and 5V.
Heater current detecting circuit B, be to be notified to CPU11 by heater current detector 5 detected heater current digital conversion, it has: will be by A/D (mould/number) the change-over circuit 16A of the detected heater current digital conversion of detecting element (CT1) 5A in the heater current detector 5; The configuration of the leading portion of this A/D change-over circuit 16A, cross input protection circuit 15A for what protect that this A/D change-over circuit 16A prevents that heater current from crossing input; Will be by the A/D change-over circuit 16B of the detected heater current digital conversion of detecting element (CT2) 5B in the heater current detector 5; Protect the input protection circuit 15B excessively of this A/D change-over circuit 16B.
Power circuit C is the circuit that feeds electrical power to fault inspecting device 4 main bodys, and it has: full-wave rectification was passed through input protection circuit 24 and the full-wave rectifying circuit 26 of the supply voltage that obtains from source power supply; By the supply voltage after this full-wave rectification being offered primary coil and change, thereby produce the conversion electric power circuit 27 of supply voltage at the secondary coil place; The supply voltage that this secondary side coil is produced is converted to mu balanced circuit 28A, 28B, the 28C corresponding to the supply voltage of each circuit; Supervision is from the voltage standard detecting circuit 25 of the standard of the supply voltage of source power supply.
Reporting control circuit D has: corresponding to reporting signal and the demonstration led drive circuit 22 of drive controlling LED23 from the fault of CPU11 described later; Drive controlling is reported signal corresponding to fault and is carried out the photo-coupler 20 of alarm output and the driving circuit 19 of output relay 21.
Communication interface E is the position of administering the communication interface between upper PC100 and the CPU11; what it had the driver 30 of drive controlling photo-coupler 30A and a protection driver 30 crosses input protection circuit 29, carries out communication operation between upper PC100 and the CPU11 by photo-coupler 30.
Fig. 3 is the block diagram of expression about the summary formation of the CPU11 inside in the fault inspecting device 4 of the 1st form of implementation.
CPU11 has: the adjustment control signal detecting element 31 that detects the magnitude of voltage of the adjustment control signal between SSR device 3 and the temperature adjustment device 6 by adjustment control signal monitoring circuit A; The heater current instrumentation portion 32 of instrumentation heater current value by heater current detecting circuit B; According to by adjustment control signal detecting element 31 detected magnitudes of voltage, judge the logical state of adjustment control signal or the adjustment control signal detection unit 33 of disconnected state; According to the heater current value that measures by heater current instrumentation portion 32, judge that heater current is the heater current detection unit 34 of logical state or disconnected state; Based on the result of determination of adjustment control signal detection unit 33 and the result of determination of heater current detection unit 34, judge the SSR breakdown determination portion 35 of the fault content of SSR device 3; According to the result of determination of this SSR breakdown determination portion 35, the output fault is reported the output processing part 36 of signal.
Adjustment control signal detection unit 33, when the controlled quentity controlled variable of judging the adjustment control signal, for example magnitude of voltage are continuously 5V during 100m second, being judged as this adjustment control signal is logical state, simultaneously, when magnitude of voltage continued not for 5V during 100m second, being judged as this adjustment control signal was disconnected state.
Heater current detection unit 34, when 45% or 45% when above of the instrumentation minimum current value that is judged to be heater current, judge that heater current is logical state, simultaneously, when judging is not 45% or 45% when above of instrumentation minimum current value of heater current, judges that heater current is the state that breaks.
SSR breakdown determination portion 35 is being judged that by adjustment control signal detection unit 33 the adjustment control signal is logical state, and is being judged that by heater current detection unit 34 heater current is when leading to state, judges that SSR device 3 is normal.
SSR breakdown determination portion 35, when judging that by adjustment control signal detection unit 33 the adjustment control signals are logical states, and, when judging that by heater current detection unit 34 heater currents are disconnected states, judge that SSR device 3 is open faults.
In addition, SSR breakdown determination portion 35, when judging that by adjustment control signal detection unit 33 the adjustment control signals are disconnected states, and, judge that by heater current detection unit 34 heater currents are logical states, judge that then SSR device 3 is short troubles.
Output processing part 36, when being judged to be the open fault of SSR device 3 by SSR breakdown determination portion 35, to report signal corresponding to the fault of this open fault and output to driving circuit 19, simultaneously, when being judged to be the short trouble of SSR device 3, will reporting signal corresponding to the fault of this short trouble and output to driving circuit 19 by SSR breakdown determination portion 35.
In addition, the power supply unit of putting down in writing in the claim is equivalent to power supply unit 1A, the heater current detection device is equivalent to heater current detecting circuit B and heater current instrumentation portion 32, the 1st decision maker is equivalent to adjustment control signal detection unit 33, the 2nd decision maker is equivalent to heater current detection unit 34, device for detecting fault is equivalent to SSR breakdown determination portion 35, the above controlled quentity controlled variable of the 1st required standard is 5V or the above voltage of 5V, the 2nd required standard is 45% of an instrumentation minimum current value, and device for informing is equivalent to output processing part 36 and reports control circuit D.
The following describes the action of the fault inspecting device 4 in the humidity control system 10 of representing the 1st form of implementation.
Adjustment control signal monitoring circuit A in the fault inspecting device 4, the magnitude of voltage of the adjustment control signal that supervision transmits between SSR device 3 and temperature adjustment device 6 is notified to CPU11 with this magnitude of voltage via photo-coupler 14.
Adjustment control signal detecting element 31 in the CPU11 when detecting the magnitude of voltage of adjustment control signal via photo-coupler 14, is sent to adjustment control signal detection unit 33 with this magnitude of voltage.
Adjustment control signal detection unit 33, whether the magnitude of voltage of judging the adjustment control signal is continuously 5V or more than the 5V during 100m second, when judging that this magnitude of voltage is continuously 5V or 5V when above during 100m second, judge that this adjustment control signal is logical state, is sent to SSR breakdown determination portion 35 with this judged result.In addition, when the magnitude of voltage of judging the adjustment control signal is not to be continuously 5V or 5V when above during 100m second, judge that this adjustment control signal for disconnected state, is sent to SSR breakdown determination portion 35 with this judged result.
In addition, the heater current detecting circuit B in the fault inspecting device 4, will detect 5 detected heater current digital conversion by heater current after, the heater current after this digital conversion is sent to CPU11.
The heater current instrumentation portion 32 of CPU11, according to the heater current from heater current detecting circuit B, instrumentation heater current value is sent to heater current detection unit 34 with this heater current value.
Heater current detection unit 34, judge whether the heater current value is more than 45% or 45% of instrumentation minimum current value, when judging that this heater current value is 45% or 45% when above of instrumentation minimum current value, judge that this heater current for logical state, is sent to SSR breakdown determination portion 35 with this judged result.In addition, when judging that the heater current value is not 45% or 45% when above of instrumentation minimum current value, judges that this heater current for the state that breaks, is sent to SSR breakdown determination portion 35 with this judged result.
SSR breakdown determination portion 35, when judging that by adjustment control signal detection unit 33 the adjustment control signal is logical state, and judge that by heater current detection unit 34 heater current is when breaking state, to judge that SSR device 3 is open faults, is notified to output processing part 36 with this judged result.
Output processing part 36 will be reported signalisation corresponding to the fault of the open fault of SSR device 3 and give driving circuit 19 and show led drive circuit 22.Driving circuit 19 is when detecting this fault when reporting signal, for the open fault of alarm output SSR device 3, and drive controlling photo-coupler 20, output relay 21.In addition, show led drive circuit 22 when detecting this fault when reporting signal, in order to report the open fault of SSR device 3, and drive controlling LED23.
In addition, SSR breakdown determination portion 35, when judging that by adjustment control signal detection unit 33 the adjustment control signal is disconnected state, and judge that by heater current detection unit 34 heater current is when leading to state, judge that SSR device 3 is a short trouble, this judged result is notified to output processing part 36.
Output processing part 36 will be reported signalisation corresponding to the fault of the open fault of SSR device 3 and give driving circuit 19 and show led drive circuit 22.Driving circuit 19 is when detecting this fault when reporting signal, for the open fault of alarm output SSR device 3, and drive controlling photo-coupler 20, output relay 21.In addition, show led drive circuit 22 when detecting this fault when reporting signal, in order to report the open fault of SSR device 3, and drive controlling LED23.
In addition, in output processing part 36, when the judged result of open fault that detects SSR device 3 or short trouble,, this judged result is notified to upper PC100 by communication interface E.
According to the 1st form of implementation, because have: judge the logical state of adjustment control signal or the adjustment control signal detection unit 33 of disconnected state; Judge the logical state of heater current or the heater current detection unit 34 of disconnected state, when judging that by adjustment control signal detection unit 33 the adjustment control signal is logical state, and judge that by heater current detection unit 34 heater current is when breaking state, be judged as the open fault of SSR device 3, so can discern the open fault of SSR device 3.
According to the 1st form of implementation, because judge that by adjustment control signal detection unit 33 the adjustment control signal is disconnected state, and judge that by heater current detection unit 34 heater current is when leading to state, be judged as the short trouble of SSR device 3, so can discern the short trouble of SSR device.
In addition, according to the 1st form of implementation, to report signal corresponding to the fault judgement result's of SSR device 3 fault and output to driving circuit 19, by at this driving circuit 19 drive controlling photo-couplers 20 or output relay 21, thereby report and export this fault judgement result, so the user of fault inspecting device 4 can discern the fault content of SSR device 3.
In addition, in above-mentioned the 1st form of implementation, regulate the magnitude of voltage (controlled quentity controlled variable) of control signal by adjustment control signal monitoring circuit A monitor temperature, judge that by adjustment control signal detection unit 33 these magnitudes of voltage are continuously 5V or 5V when above during 100m second, judge that the adjustment control signal is logical state, when judging that this magnitude of voltage is not to be continuously 5V or 5V when above during 100m second, judge that the adjustment control signal is disconnected state, even but undoubted for example design temperature is regulated the scope linear change of control signal at 4mA～20mA, the current value of this adjustment control signal is monitored as controlled quentity controlled variable, judge that by adjustment control signal detection unit 33 these current values are that 4mA or 4mA are when above, judge that the adjustment control signal is logical state, when judging that this current value is not that 4mA or 4mA are when above, judge that the adjustment control signal is disconnected state, also can obtain same effect.
In addition, equally, the current value of adjustment control signal is monitored as controlled quentity controlled variable, judge by adjustment control signal detection unit 33 whether this current value is more than 45% or 45% of instrumentation minimum current value, when judging that this current value is 45% or 45% when above of instrumentation minimum current value, judge that the adjustment control signal is logical state, when judging that this current value is not 45% or 45% when above of instrumentation minimum current value, judge that the adjustment control signal is disconnected state, so also can obtain same effect.
In addition, in above-mentioned the 1st form of implementation, though, also can constitute this heater current instrumentation portion 32 by Fig. 4 or software shown in Figure 5 in the heater current value of heater current instrumentation portion 32 instrumentations from heater current detecting circuit B.
Fig. 4 is the block diagram that the summary of expression heater current instrumentation portion 32 inside constitutes.
Heater current instrumentation portion 32 shown in Figure 4 has: A/D sampled value obtaining section 42, its will from the heater current of heater current detecting circuit B 1 cycle as 360 ° and per 15 ° obtain the A/D sampled value, in ram region 41, keep the A/D sampled value of 1 cycle, 24 parts; Basic value is calculated portion 43, and it calculates basic value based on A/D sampled value 42 that obtain by A/D sampled value obtaining section, be in 24 parts in the maintenance in ram region 41; Heater current value conversion portion 44, it will convert as the heater current value of being judged by heater current detection unit 34 by the current value that the basic value square meanization of being calculated 1 cycle that portion 43 calculates by this basic value is calculated.
Basic value is calculated portion 43, calculates basic value by the A/D sampled value that is in 24 parts in the maintenance in the ram region 41 is applied mechanically following arithmetic expression.
ym = ( xm - ( xm - 12 ) + ( xm - 4 ) - ( xm - 16 ) ) / 2 3
A/D sampled value when xm is sampled point m;
Basic value when ym is sampled point m;
A/D sampled value when being sampled point before 12 of xm (xm-12);
A/D sampled value when being sampled point before 4 of xm (xm-4);
A/D sampled value when being sampled point before 16 of xm (xm-16).
Heater circuit conversion portion 44 by calculating current value by the basic value square meanization that basic value is calculated 24 parts (1 cycle portions) that portion 43 calculates, is scaled the heater current value with this current value.
The described A/D sampled value of claim item acquisition device is equivalent to A/D sampled value obtaining section 42, and the basic value calculating apparatus is equivalent to basic value and calculates portion 43, and heater current value scaler is equivalent to heater current value conversion portion 44.
Heater current instrumentation portion 32 according to software formation shown in Figure 4, because will from 1 cycle of heater current of heater current detecting circuit B as 360 ° and per 15 ° obtain the A/D sampled value, the A/D sampled value that in ram region 41, keeps 1 cycle, 24 parts, calculate basic value based on the A/D sampled value of 24 parts that keep in this ram region 41, the current value that will calculate by the basic value square meanization of 1 cycle portions that this is calculated, convert as the heater current value of judging by heater current detection unit 34, so by obtaining non-simulation, but the heater current value of numeral, can not be subjected to the influence of noise, can guarantee the reaction velocity that changes corresponding to the electric current of heater current value, its result can improve the fault verification precision of SSR device 3.
Fig. 5 is the block diagram that the summary of expression heater current instrumentation portion 32 inside constitutes.
Heater current instrumentation portion 32 shown in Figure 5 has: A/D sampled value obtaining section 52, its will from the heater current of heater current detecting circuit B 1 cycle as 360 ° and per 3 ° obtain the A/D sampled value, in ram region 51, keep the A/D sampled value of 1 cycle, 120 parts; Heater current value conversion portion 53, it will be by being in the A/D sampled value of 120 parts in the maintenance in the accumulative total ram region 51, and the current value that the A/D sampled value square meanization after this accumulative total is calculated, the heater current value of judging as heater current detection unit 34 and converting.In addition, the A/D sampled value acquisition device described in the claim is equivalent to A/D sampled value obtaining section 52, and heater current value scaler is equivalent to heater current value conversion portion 53.
Heater current instrumentation portion 32 according to software formation shown in Figure 5, because will from the heater current of heater current detecting circuit B 1 cycle as 360 ° and per 3 ° obtain the A/D sampled value, the A/D sampled value that in ram region 51, keeps 1 cycle, 120 parts, be in the A/D sampled value of 120 parts in the maintenance in this ram region 51 of accumulative total, and the A/D sampled value square meanization after will adding up, thereby the current value that calculates, convert as the heater current value of judging by heater current detection unit 34, so by obtaining non-simulation, but the heater current value of numeral, can not be subjected to the influence of noise, can guarantee the reaction velocity that the electric current of corresponding heater current value changes, its result can improve the fault verification precision of SSR device 3.
In addition, in above-mentioned the 1st form of implementation, although understand the fault inspecting device 4 of the fault detect SSR device 3, but also can consider to detect in advance the well heater broken string life-span before the well heater broken string function, be well heater partial short-circuit function.
Therefore, the fault inspecting device 4 at having such well heater partial short-circuit function describes as the 2nd form of implementation.
Fig. 6 is the block diagram of expression about the summary formation of the CPU11 inside in the fault inspecting device 4 of the 2nd form of implementation.In addition,, give identical Reference numeral, omit the formation of its repetition and the explanation of action at the formation identical with the fault inspecting device 4 of relevant the 1st form of implementation.
CPU11 in the fault inspecting device 4 shown in Figure 6 has: adjustment control signal detecting element 31, it is by adjustment control signal monitoring circuit A, the current value that SSR device 3 and temperature adjustment is filled to the adjustment control signal between 6 monitors as controlled quentity controlled variable, detects current value; Heater current instrumentation portion 32, it passes through heater current detecting circuit B and instrumentation heater current value; Adjustment control signal detection unit 33, it judges the logical state or the disconnected state of adjustment control signal according to by adjustment control signal detecting element 31 detected magnitudes of voltage; Partial short-circuit threshold value storage part 61, its with the excess current value before the broken string of well heater 1 as the threshold value of partial short-circuit and storage in advance; Threshold value adjustment part 62, it is with the partial short-circuit threshold value that is in this partial short-circuit threshold value storage part 61 in the storage, setting current value based on the adjustment control signal is adjusted, should adjusted partial short-circuit threshold value updated stored in partial short-circuit threshold value storage part 61; Well heater partial short-circuit detection unit 63, it judges whether the heater current value that is measured by heater current instrumentation portion 32 surpasses the partial short-circuit threshold value that is in the partial short-circuit threshold value storage part 61 in the storage, when judging that the heater current value has surpassed the partial short-circuit threshold value, be judged as the partial short-circuit of well heater 1; Output processing part 36, it is according to the judged result of this well heater partial short-circuit detection unit 63, and the output fault is reported signal.
Adjustment control signal detecting element 31 for example is set at the adjustment control signal in the scope internal linear of 4mA～20mA and changes, and the current value of this adjustment control signal is monitored as controlled quentity controlled variable.
Adjustment control signal detection unit 33, when judging that current value by adjustment control signal detecting element 31 detected adjustment control signals is that 4mA or 4mA are when above, judge that the adjustment control signal is logical state, when judging that this current value is not 4mA or 4mA when above, judges that the adjustment control signal is disconnected state.
The partial short-circuit threshold value that is in the partial short-circuit threshold value storage part 61 in the storage is noticeable aspect following characteristic, promptly generally when near the broken string of well heater 1 during the life-span, because the insulativity of well heater 1 inside descends, value of current flowing uprises in well heater 1, and has set the excess current value before should breaking in the life-span.In addition, be in the partial short-circuit threshold value in the storage in the partial short-circuit threshold value storage part 61, can carry out suitable setting change by operating portion not shown in the figures or upper PC100.
The partial short-circuit threshold value according to respect to the ratio as the 20mA of the setting current value of adjustment control signal, is adjusted in threshold value adjustment part 62, should adjusted partial short-circuit threshold value updated stored in partial short-circuit storage part 61.In addition, threshold value adjustment part 62 will be corresponding to the only partial short-circuit threshold value updated stored of the setting of current humidity control system 10 in partial short-circuit threshold value storage part 61.
Well heater partial short-circuit detection unit 63 when being judged that by adjustment control signal detection unit 33 the adjustment control signals are logical states, and is judged when the heater current value has surpassed the partial short-circuit threshold value, carries out the judgement action of the partial short-circuit of judging well heater.In addition, well heater partial short-circuit detection unit 63, surpass the partial short-circuit threshold value even judge heater current, and when judging that by adjustment control signal detection unit 33 the adjustment control signals are disconnected states, just forbidden judging the judgement action of the partial short-circuit of aforementioned well heater 1.
Output processing part 36 when judging the partial short-circuit of well heater 1 by well heater partial short-circuit detection unit 63, will be reported signal corresponding to the fault of this well heater partial short-circuit and output to driving circuit 19.
In addition, the described heater current detection device of claim is equivalent to heater current instrumentation portion 32, the partial short-circuit threshold value storage means is equivalent to partial short-circuit threshold value storage part 61, partial short-circuit threshold determination device and partial short-circuit decision maker are equivalent to well heater partial short-circuit detection unit 63, the 1st decision maker is equivalent to adjustment control signal detection unit 33, partial short-circuit threshold value adjusting gear is equivalent to threshold value adjustment part 62, and device for informing is equivalent to output processing part 36 and reports control circuit D.
The action of the fault inspecting device 4 in the humidity control system 10 of expression the 2nd form of implementation is described based on Fig. 2 and Fig. 6 below.
Adjustment control signal monitoring circuit A in the fault inspecting device 4, the current value of the adjustment control signal that transmits between supervision SSR device 3 and the temperature adjustment device 6 is notified to CPU11 with this current value via photo-coupler 14.
Adjustment control signal detecting element 31 in the CPU11 when detecting the current value of adjustment control signal via photo-coupler 14, is sent to adjustment control signal detection unit 33 with this current value.
Adjustment control signal detection unit 33, whether the current value of judging the adjustment control signal is 4mA or more than the 4mA, when judging that this current value is 4mA or 4mA when above, judges that this adjustment control signal is logical state, is sent to well heater partial short-circuit detection unit 63 with this judged result.In addition, adjustment control signal detection unit 33 when the current value of judging the adjustment control signal is not 4mA or 4mA when above, judges that this adjustment control signal is disconnected state, is sent to well heater partial short-circuit detection unit 63 with this judged result.
In addition, the heater current detecting circuit B in the fault inspecting device 4 will be sent to CPU11 with the electric current after this digital conversion by heater current detector 5 detected heater current digital conversion.
The heater current instrumentation portion 32 of CPU11, according to the heater current from heater current detecting circuit B, instrumentation heater current value is sent to well heater partial short-circuit detection unit 63 with this heater current value.
Well heater partial short-circuit detection unit 63, when detected the adjustment control signal by adjustment control signal detection unit 33 is when leading to the result of determination of state, when judging that the heater current value that is measured by heater current instrumentation portion 32 is to be in partial short-circuit threshold value in the storage or its when above in partial short-circuit threshold value storage part 61, then be judged as the partial short-circuit of well heater 1, this judged result is notified to output processing part 36.
Output processing part 36 when the judged result of the partial short-circuit that detects well heater 1, will be reported signalisation corresponding to the fault of the partial short-circuit of this well heater 1 and give driving circuit 19 and show led drive circuit 22.Driving circuit 19 is when detecting this fault when reporting signal, for this well heater partial short-circuit is exported in alarm, and drive controlling photo-coupler 20 or output relay 21.In addition, show that led drive circuit 22 is when detecting this fault when reporting signal, the drive controlling LED23 for the partial short-circuit of reporting well heater 1.In addition, in output processing part 36, when the judged result of the partial short-circuit that detects well heater,, this judged result is notified to upper PC100 by communication interface E.
In addition, well heater partial short-circuit detection unit 63 when being detected the adjustment control signal by adjustment control signal detection unit 33 when being the result of determination of disconnected state, is forbidden the action that compares to determine of heater current value and partial short-circuit threshold value.
According to the 2nd form of implementation, when breaking the life-span near well heater, the insulativity of well heater 1 inside descends, it is noticeable that the electric current that flows in the well heater 1 when the life-span uprises this respect, because have excess current value before the broken string with the well heater 1 partial short-circuit threshold value storage part 61 of storage as the partial short-circuit threshold value and in advance, when judging that the adjustment control signal is when leading to state, judge whether heater current has surpassed the partial short-circuit threshold value in the storage, when judging that heater current has surpassed the partial short-circuit threshold value, be judged as the partial short-circuit of well heater, so can discern the partial short-circuit before the well heater broken string, its result, because the assurance of the failure cause during the well heater broken string has become easily, can guarantee maintainability.In addition, because the omen before can breaking grip heater, that is partial short-circuit, before the well heater broken string, well heater 1 can be changed, thereby its preventive maintenance can be guaranteed.
In addition, according to the 2nd form of implementation, because when judging that the adjustment control signal is when breaking state, forbid the action that compares to determine of heater current and partial short-circuit threshold value, thus can be certain prevent the misinterpretation that compares to determine the well heater partial short-circuit that action causes by the disconnected state of adjustment control signal.
According to the 2nd form of implementation, adjust the partial short-circuit threshold value that is in the partial short-circuit threshold value storage part 61 in the storage based on the setting electric current of adjustment control signal, this adjusted partial short-circuit threshold value of updated stored in partial short-circuit threshold value storage part 61 is so can set only partial short-circuit threshold value corresponding to the setting of current humidity control system 10.
In addition, in above-mentioned the 2nd form of implementation, though instrumentation is from the heater current value of heater current detecting circuit B in heater current instrumentation portion 32, this heater current instrumentation portion 32 also can be made of Fig. 4 or software shown in Figure 5.
In addition, in above-mentioned the 2nd form of implementation, though disposed the threshold value adjustment part 62 of adjusting the partial short-circuit threshold value, even but undoubtedly do not dispose this threshold value adjustment part 62, and, also can judge the partial short-circuit of well heater 1 based on the partial short-circuit threshold value and the heater current that are in the partial short-circuit threshold value storage part 61 in the storage.
In addition, in above-mentioned the 2nd form of implementation, though when judging that the adjustment control signal is when breaking state, forbid the action that compares to determine of heater current and partial short-circuit threshold value, even but undoubtedly the adjustment control signal is disconnected state, when the action that compares to determine of carrying out heater current value and partial short-circuit threshold value, judge when the heater current value is the partial short-circuit threshold value, also can judge the partial short-circuit of well heater 1.
In addition, in the fault inspecting device 4 about above-mentioned the 1st form of implementation and the 2nd form of implementation, though be by communication interface E, the judged result of the partial short-circuit of the fail result of 4 pairs of SSR devices 3 of fault inspecting device or well heater 1 is notified to upper PC100, but as shown in Figure 7, the infrared communication interface F that carries out with the infrared communication of other adjacent fault inspecting devices is set, use this infrared communication interface F, can notify the system of this judged result to constitute each other at fault inspecting device 4 and also be fine.
At this moment, for example will be from the requirement order of upper PC100, via each fault inspecting device 4, send to each fault inspecting device 4, simultaneously, corresponding to this requirement order and will be notified to upper PC100 from the judged result of each fault inspecting device 4, thus upper PC100 side can unified management SSR device 3 fail result and the partial short-circuit result of well heater 1.
In addition, communicate to connect in the such a plurality of fault inspecting devices 4 and the humidity control system between the upper PC100, give identiflication number to each fault inspecting device 4, send the requirement order that has this identiflication number from upper PC100, after each fault inspecting device 4 receives the requirement order, extract the identiflication number that has in this requirement order out, when the identiflication number of judging this extraction is the identiflication number of oneself, the fault of the SSR device 3 that oneself fault inspecting device 4 is carried out or the judged result of well heater partial short-circuit are notified to upper PC100 and also are fine, in upper PC100 side, judged result that undoubtedly can the intrasystem whole fault inspecting devices 4 of unified management, only indivedual judged results of extracting desirable fault inspecting device 4 out also are possible.
In addition, in above-mentioned form of implementation, well heater 1 is to be that example is illustrated with the well heater that three-phase is used, even but the single-phase well heater 1B that uses as shown in Figure 8, undoubtedly also can be according to the adjustment control signal between SSR device 3 and the temperature adjustment device 6 logical, disconnected state, and the heater current between SSR device 3 and the single-phase well heater 1B is logical, the open fault or the short trouble of disconnected condition judgement SSR device 3 are simultaneously based on heater current between SSR device 3 and the single-phase well heater 1B and partial short-circuit threshold determination well heater partial short-circuit.
Fault inspecting device of the present invention has following effect, promptly detect the fault (open circuit/short circuit) of SSR device, send alarm with the difference of well heater broken string, thereby hold the fault inspecting device group into the failure cause of system become easily, in the humidity control system of the use well heater of industrial furnace well heater, semiconductor cleaning apparatus, plastic molding press etc., be useful.

Claims (14)

1. a fault inspecting device is connected with humidity control system, and this humidity control system has: the well heater of controlling object; Feed electrical power to the power supply unit of aforementioned well heater; Solid-state relay device, it is disposed between these well heaters and the power supply unit, adjusts the electric weight that supplies to aforementioned well heater from aforementioned power supply unit corresponding to the adjustment control signal; Temperature adjustment device, it monitors the temperature of aforementioned well heater, for based on this supervision result and the temperature of aforementioned well heater is set at target temperature, the output aforementioned temperature is regulated control signal, this fault inspecting device detects the fault of aforementioned solid-state relay device, it is characterized in that this fault inspecting device has:
The heater current detection device, it detects the heater current between aforementioned solid-state relay device and the aforementioned well heater;
The 1st decision maker, it judges whether aforementioned temperature is regulated control signal is the 1st required standard or the above controlled quentity controlled variable of the 1st required standard;
The 2nd decision maker, it judges that whether by the detected heater current of aforementioned heater current detection device be the 2nd required standard or more than the 2nd required standard;
Device for detecting fault, it judges the fault of aforementioned solid-state relay device according to the result of determination of aforementioned the 1st decision maker and the result of determination of the 2nd decision maker.
2. fault inspecting device according to claim 1, it is characterized in that, when judging that by aforementioned the 1st decision maker it is the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and judge that by aforementioned the 2nd decision maker aforementioned heater current is not the 2nd required standard or the 2nd required standard when above, aforementioned device for detecting fault is judged to be the solid-state relay open fault of aforementioned solid-state relay device.
3. fault inspecting device according to claim 1, it is characterized in that, when judging that by aforementioned the 1st decision maker it is not the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and judge that by aforementioned the 2nd decision maker aforementioned heater current is the 2nd required standard or the 2nd required standard when above, aforementioned device for detecting fault is judged to be the solid-state relay short trouble of aforementioned solid-state relay device.
4. fault inspecting device according to claim 1 is characterized in that having device for informing, and it reports and export the result of determination of aforementioned device for detecting fault.
5. fault inspecting device according to claim 1 is characterized in that, aforementioned heater current detection device has:
Mould/number sampled value acquisition device, it obtains the mould/number sampled value of the regulation number of the heater current value between aforementioned solid-state relay device and the aforementioned well heater in specified period;
The basic value calculating apparatus, it calculates basic value according to the mould/number sampled value by aforementioned mould/regulation number that number sampled value acquisition device is obtained;
Heater current value scaler, the current value that it will calculate by the basic value mean value of squareization of specified period that this basic value calculating apparatus is calculated converts as the heater current value of being judged by aforementioned the 2nd decision maker.
6. fault inspecting device according to claim 1 is characterized in that, aforementioned heater current detection device has:
Mould/number sampling acquisition device, it is the heater current value full-wave rectification between aforementioned solid-state relay device and the aforementioned well heater, and obtains the mould/number sampled value of regulation number in specified period;
Heater current value scaler, the mould/number sampled value of this regulation number of its accumulative total will convert as the heater current value of being judged by aforementioned the 2nd decision maker by the current value that the mould after this accumulative total/number sampled value mean value of squareization calculates.
7. fault inspecting device according to claim 1, it is characterized in that, has radio communication device with upper equipment and other fault inspecting device wireless connections, by this radio communication device, and aforementioned upper equipment or aforementioned other fault inspecting device between send the result of determination that receives aforementioned device for detecting fault.
8. a fault inspecting device is connected with humidity control system, and this humidity control system has: the well heater of controlling object; Feed electrical power to the power supply unit of aforementioned well heater; Solid-state relay device, it is disposed between these well heaters and the power supply unit, adjusts the electric weight that supplies to aforementioned well heater from aforementioned power supply unit corresponding to the adjustment control signal; Temperature adjustment device, it monitors the temperature of aforementioned well heater, for based on this supervision result and the temperature of aforementioned well heater is set at target temperature, the output aforementioned temperature is regulated control signal, this fault inspecting device detects the fault of aforementioned solid-state relay device, it is characterized in that this fault inspecting device has:
The heater current detection device, it detects the heater current between aforementioned solid-state relay device and the aforementioned well heater;
The partial short-circuit threshold value storage means, it is stored the excess current value before the broken string of aforementioned well heater in advance as the partial short-circuit threshold value;
Partial short-circuit threshold determination device, it judges whether this heater current has surpassed the partial short-circuit threshold value that is in the aforementioned partial short-circuit threshold value storage means in the storage when detecting aforementioned heater current by aforementioned heater current detection device;
The partial short-circuit decision maker, it is judged as the partial short-circuit of aforementioned well heater when being judged that by aforementioned partial short-circuit threshold determination device aforementioned heater current has surpassed aforementioned partial short-circuit threshold value.
9. fault inspecting device according to claim 8 is characterized in that, has the 1st decision maker, and it judges whether aforementioned temperature is regulated control signal is the 1st required standard or the above controlled quentity controlled variable of the 1st required standard,
Aforementioned partial short-circuit decision maker,
When judging that by aforementioned the 1st decision maker it is the 1st required standard or the controlled quentity controlled variable more than the 1st required standard that aforementioned temperature is regulated control signal, and when judging that by aforementioned partial short-circuit threshold determination device aforementioned heater current has surpassed aforementioned partial short-circuit threshold value, execution is judged as the judgement action of the partial short-circuit of aforementioned well heater, simultaneously
When judging that by aforementioned partial short-circuit threshold determination device aforementioned heater current has surpassed aforementioned partial short-circuit threshold value, and judge that by aforementioned the 1st decision maker aforementioned temperature regulates control signal when not being the 1st required standard or the controlled quentity controlled variable more than the 1st required standard, forbid being judged as the judgement action of the partial short-circuit of aforementioned well heater.
10. fault inspecting device according to claim 9, it is characterized in that, has partial short-circuit threshold value adjusting gear, it regulates the setting current value of control signal according to aforementioned temperature, adjust the aforementioned partial short-circuit threshold value that is in the aforementioned partial short-circuit threshold value storage means in the storage, should adjusted partial short-circuit threshold value updated stored in aforementioned partial short-circuit threshold value storage means.
11. fault inspecting device according to claim 8 is characterized in that, has device for informing, it reports and exports this result of determination when being judged as the partial short-circuit of aforementioned well heater by aforementioned partial short-circuit decision maker.
12. fault inspecting device according to claim 8 is characterized in that, aforementioned heater current detection device has:
Mould/number sampled value acquisition device, it obtains the mould/number sampled value of the regulation number of the heater current value between aforementioned solid-state relay device and the aforementioned well heater in specified period;
The basic value calculating apparatus, it calculates basic value according to the mould/number sampled value by aforementioned mould/regulation number that number sampled value acquisition device is obtained;
Heater current value scaler, the current value that it will calculate by the basic value mean value of squareization of specified period that this basic value calculating apparatus is calculated converts as the aforementioned heater current value of being judged by aforementioned partial short-circuit threshold determination device.
13. fault inspecting device according to claim 8 is characterized in that, aforementioned heater current detection device has:
Mould/number sampling acquisition device, it is the heater current value full-wave rectification between aforementioned solid-state relay device and the aforementioned well heater, and obtains the mould/number sampled value of regulation number in specified period;
Heater current value scaler, mould/number the sampled value of this regulation number of its accumulative total, to convert as the aforementioned heater current value of judging by aforementioned partial short-circuit threshold determination device by the current value that the mould after this accumulative total/number sampled value mean value of squareization calculates.
14. fault inspecting device according to claim 8, it is characterized in that, has radio communication device with upper equipment and other fault inspecting device wireless connections, by this radio communication device, and aforementioned upper equipment or aforementioned other fault inspecting device between send the result of determination that receives aforementioned partial short-circuit decision maker.
CNA2005100043968A 2004-01-15 2005-01-13 Fault inspecting device Pending CN1645158A (en)

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JP2004008325 2004-01-15
JP2004008325 2004-01-15
JP2004351640 2004-12-03
JP2004351640A JP2005228732A (en) 2004-01-15 2004-12-03 Failure detection apparatus

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CN1645158A true CN1645158A (en) 2005-07-27

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Family Cites Families (5)

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CN102016950B (en) * 2008-04-28 2013-02-27 阿自倍尔株式会社 Field device
CN102687030A (en) * 2010-01-25 2012-09-19 美国能量变换公司 Electrical connection quality detection
CN108713172B (en) * 2016-04-28 2021-09-07 欧姆龙株式会社 Output control unit, output control system, and control method for output control unit
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CN107949089A (en) * 2016-10-13 2018-04-20 佛山市顺德区美的电热电器制造有限公司 A kind of information processing method and electromagnetic heating apparatus
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CN108692963A (en) * 2017-03-31 2018-10-23 阿自倍尔株式会社 Apparatus for diagnosing deterioration and method
CN108362970A (en) * 2018-01-31 2018-08-03 苏州市普金电力成套设备有限公司 A kind of high efficiency smart fault detect transmitting device
CN111034352A (en) * 2018-03-02 2020-04-17 欧姆龙株式会社 Heating device and abnormality detection method for heating device
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CN108761270A (en) * 2018-08-18 2018-11-06 无锡诚勇自动化技术有限公司 A kind of wire break alarm

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TWI287184B (en) 2007-09-21
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JP2005228732A (en) 2005-08-25
KR20050075293A (en) 2005-07-20

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