KR101383158B1 - Method for detecting heater disconnecting - Google Patents

Method for detecting heater disconnecting Download PDF

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KR101383158B1
KR101383158B1 KR1020120120099A KR20120120099A KR101383158B1 KR 101383158 B1 KR101383158 B1 KR 101383158B1 KR 1020120120099 A KR1020120120099 A KR 1020120120099A KR 20120120099 A KR20120120099 A KR 20120120099A KR 101383158 B1 KR101383158 B1 KR 101383158B1
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dmv
change amount
variation amount
detection
disturbance
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Korean (ko)
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한영수
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주식회사 한영넉스
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/165—Indicating that current or voltage is either above or below a predetermined value or within or outside a predetermined range of values
    • G01R19/16566—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533
    • G01R19/1659—Circuits and arrangements for comparing voltage or current with one or several thresholds and for indicating the result not covered by subgroups G01R19/16504, G01R19/16528, G01R19/16533 to indicate that the value is within or outside a predetermined range of values (window)
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/08—Locating faults in cables, transmission lines, or networks
    • G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
    • G01R31/083—Locating faults in cables, transmission lines, or networks according to type of conductors in cables, e.g. underground

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
  • Control Of Resistance Heating (AREA)

Abstract

The present invention relates to a method for detecting disconnection in heaters among a plurality of heaters connected in parallel. The method comprises the steps of: calculating output variation amount (DMV) and variation amount of detection current (DHBC) using a regression analysis method; finding out a detection start point using the calculated output variation amount (DMV); determining the variation of disturbance or a target value and partial heater disconnection using the calculated output variation amount (DMV) and the calculated variation amount of the detection current (DHBC); and generating a warning when the partial heater disconnection is detected. According to the present invention, a detection function is automatically executed, and the variation of disturbance or a target value and partial heater disconnection are accurately detected. Therefore, malfunction due to the variation of disturbance or a target value is prevented. A reduction in prime cost is expected when the method is applied to a power controller (TPR). [Reference numerals] (AA) Start; (BB) End; (S110) Calculate output variation amount and variation amount of detection current using a regression analysis method; (S120) Find out a detection start point using the calculated output variation amount; (S130) Determine the variation of disturbance or a target value and partial heater disconnection using the calculated output variation amount and the calculated variation amount of the detection current; (S140) Generate a warning when the partial heater disconnection is detected

Description

히터 단선 검출 방법{Method for detecting heater disconnecting}Method for detecting heater disconnecting

본 발명은 히터 단선 검출 방법에 관한 것으로서, 특히 병렬 연결된 히터 중 에서 일부가 단선되었을 때 이를 검출하는 방법에 관한 것이다. The present invention relates to a heater disconnection detection method, and more particularly, to a method of detecting when a part of a parallel-connected heater is disconnected.

일반적으로, 히터는 열원으로서 사용되고 있으며, 그 사용범위가 반도체 또는 디스플레이 제조 공정 등과 같이 광범위하다. 이러한 히터는 히팅 소자(예컨대, 저항)의 양단에 전원을 인가하면 히팅 소자의 양단에 흐르는 전류에 의해 주울 열이 발생된다. 그런데, 히터를 구성하는 히팅 소자는 외부의 충격, 노후 및 용량을 초과한 전류의 흐름에 따라 단선이 발생할 수 있다. 이에 따라 히터는 열원으로서 기능을 수행하지 못하게 된다. 이를 방지하기 위해 히터의 단선을 검출하여 교체하여야 한다. In general, a heater is used as a heat source, and its range of use is wide such as semiconductor or display manufacturing process. When the heater applies power to both ends of a heating element (eg, a resistor), joule heat is generated by current flowing through both ends of the heating element. By the way, the heating element constituting the heater may be disconnected due to the external shock, aging and the flow of current exceeding the capacity. This prevents the heater from functioning as a heat source. To prevent this, disconnection of heater should be detected and replaced.

한편, 종래 히터 단선 검출은, 도 1에 도시한 바와 같이, 전원(1), 스위치(2), 히터(3) 및 전류 센서(CT)를 포함하여 이루어진 구성에서, 전류 센서(CT)의 출력량을 검출하여 히터 단선 여부를 검출한다. On the other hand, the conventional heater disconnection detection, as shown in Fig. 1, in the configuration including the power supply 1, the switch 2, the heater 3 and the current sensor CT, the output amount of the current sensor CT To detect whether the heater is disconnected.

또한, 종래 부분 히터 단선 검출은, 도 2에 도시한 바와 같이, 전원(1), 스위치(2), 병렬 연결된 히터단(4) 및 전류 센서(CT)를 포함하여 이루어진 구성에서, 전류 센서(CT)의 출력량을 검출하여 부분 히터 단선을 검출한다. In addition, the conventional partial heater disconnection detection, as shown in Fig. 2, in the configuration including the power supply 1, the switch 2, the heater stage 4 connected in parallel and the current sensor (CT), the current sensor ( CT output power is detected to detect partial heater disconnection.

이때, 부분 히터 단선 검출 방법을 살펴보면, 먼저 사용자가 스위치(2)를 이용하여 출력이 안정되었음을 설정하고, 이때부터 부분 히터 단선 기능을 수행한다. 도 3을 참조하면, 예를 들면 100℃일 때 전류 센서(CT)의 안정된 출력값은 5A이고, 200℃일 때 전류 센서(CT)의 안정된 출력값은 8A이다. 그리고, 목표값(SV) 변경 등 전류 센서(CT) 출력값 변동의 요인이 발생하면 사용자가 다시 스위치(2)로 설정한다. 즉, 제어의 개시, 목표값의 변화 등이 있을 때마다 검출 시작 시점을 수동으로 지정해야 한다. 그리고, 히터 단선이 발생하지 않더라도 외란의 침입, 목표값의 변경 등에 따라 출력 전류값이 변경되면 오동작으로 인해 경보가 발생하는 문제점이 있다. At this time, referring to the partial heater disconnection detection method, the user first sets that the output is stable using the switch 2, and from this time, the partial heater disconnection function is performed. Referring to FIG. 3, for example, the stable output value of the current sensor CT at 100 ° C. is 5A, and the stable output value of the current sensor CT at 8 ° C. is 8A. When a factor of variation in the output value of the current sensor CT, such as a change in the target value SV, occurs, the user sets the switch 2 again. That is, whenever there is a start of control, a change in the target value, or the like, the start point of detection must be manually specified. In addition, even if the heater is not disconnected, there is a problem that an alarm occurs due to a malfunction if the output current value is changed due to intrusion of disturbance, change of a target value, and the like.

이에 본 발명은 상기와 같은 문제점을 해결하기 위한 것으로서, 검출 기능이 자동으로 이루어지고, 또한 외란, 목표값 변경 및 부분 히터 단선 여부를 정확하게 판단하여 외란이나 목표값 변경에 의해 오동작이 발생하지 않도록 히터 단선을 검출할 수 있는 방법을 제공하는데 그 목적이 있다. Accordingly, the present invention is to solve the above problems, the detection function is made automatically, and also to accurately determine whether the disturbance, the target value change and the partial heater disconnection, so that the heater does not occur due to disturbance or the target value change It is an object of the present invention to provide a method for detecting disconnection.

상기와 같은 목적을 달성하기 위하여 본 발명에 따른 히터 단선 검출 방법은, 출력 변화량(DMV)과 검출 전류의 변화량(DHBC)을 회귀 분석적 방법으로 산출하는 단계와; 산출된 출력 변화량(DMV)을 이용하여 검출 시작 시점을 찾아내는 단계와; 산출된 출력 변화량(DMV)과 검출 전류의 변화량(DHBC)을 이용하여 외란 또는 목표값의 변화와 부분 히터 단선 여부를 판단하되, 출력 변화량(DMV)이 비안정되면 외란 또는 목표값의 변화로 판단하고, 출력 변화량(DMV)이 안정되었다가 출력 변화량(DMV)이 0 이상이면서 검출 전류의 변화량(DHBC)이 설정값 미만으로 떨어지면 부분 히터 단선으로 판단하는 단계와; 부분 히터 단선인 것으로 판단되면 경보를 발생하는 단계를 포함하여 이루어진 것을 특징으로 한다. In order to achieve the above object, the heater disconnection detecting method according to the present invention includes the steps of calculating an output change amount (DMV) and a change amount (DHBC) of a detection current by a regression analysis method; Finding a detection start time using the calculated output change amount DMV; The output change amount (DMV) and the change amount of the detection current (DHBC) are used to determine whether the disturbance or the target value is changed and the partial heater is disconnected, but when the output change amount (DMV) is unstable, it is determined as the disturbance or the change in the target value. Determining the partial heater disconnection when the output change amount DMV is stabilized and the output change amount DMV is 0 or more and the change amount DHBC of the detection current falls below a set value; If it is determined that the partial heater disconnection, characterized in that it comprises a step of generating an alarm.

삭제delete

본 발명에 따르면, 검출 기능이 자동으로 이루어지고, 또한 외란, 목표값 변경 및 부분 히터 단선 여부를 정확하게 판단함으로써 외란이나 목표값 변경에 의한 오동작을 방지할 수가 있다. 전력조정기(TPR)에 적용하는 경우에는 원가 절감의 효과를 기대할 수 있다. According to the present invention, the detection function is automatically performed, and further, by accurately determining whether the disturbance, the target value change and the partial heater are disconnected, it is possible to prevent the malfunction due to the disturbance or the target value change. When applied to a power regulator (TPR), cost savings can be expected.

도 1은 종래 히터 단선 검출을 설명하기 위한 도면.
도 2는 종래 부분 히터 단선 검출을 설명하기 위한 도면.
도 3은 종래 스위치 조작을 통해 부분 히터 단선 검출을 설명하기 위한 개념도.
도 4는 본 발명에 따른 히터 단선 검출 방법을 설명하기 위한 흐름도.
도 5는 회귀식에 의해 산출되는 출력 변화량을 보여주는 그래프.
도 6은 출력 변화량의 추이를 보여주는 예.
도 7은 출력량의 추이를 보여주는 예.
도 8은 출력량 및 검출 전류량의 추이를 보여주는 예. 1 is a view for explaining conventional heater disconnection detection.
2 is a diagram for explaining conventional partial heater disconnection detection.
3 is a conceptual diagram for explaining partial heater disconnection detection through a conventional switch operation.
4 is a flowchart for explaining a heater disconnection detecting method according to the present invention;
5 is a graph showing an output change amount calculated by a regression equation.
6 is an example showing the transition of the output change amount.
7 is an example showing the trend of output quantity.
8 is an example showing the transition between the output amount and the detected current amount.

이하, 본 발명의 바람직한 실시예를 첨부된 도면들을 참조하여 상세히 설명한다. 본 발명을 설명함에 있어, 관련된 공지 구성 또는 기능에 대한 구체적인 설명이 본 발명의 요지를 흐릴 수 있다고 판단되는 경우에는 그 상세한 설명은 생략한다. 또한, 이하에서 본 발명의 바람직한 실시예를 설명할 것이나, 본 발명의 기술적 사상은 이에 한정하거나 제한되지 않고 당업자에 의해 변형되어 다양하게 실시될 수 있음은 물론이다. Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear. In addition, the preferred embodiments of the present invention will be described below, but it is needless to say that the technical idea of the present invention is not limited thereto and can be variously modified by those skilled in the art.

도 4는 본 발명에 따른 히터 단선 검출 방법을 설명하기 위한 흐름도, 도 5는 회귀식에 의해 산출되는 출력 변화량을 보여주는 그래프, 도 6은 출력 변화량의 추이를 보여주는 예, 도 7은 출력량의 추이를 보여주는 예, 도 8은 출력량 및 검출 전류량의 추이를 보여주는 예이다. 4 is a flowchart illustrating a heater disconnection detection method according to the present invention, FIG. 5 is a graph showing an output change amount calculated by a regression equation, FIG. 6 is an example showing a trend of an output change amount, and FIG. 8 shows an example of the transition of the output amount and the detected current amount.

본 발명에 따른 히터 단선 검출 방법은, 검출 기능이 자동으로 이루어지고, 또한 외란, 목표값 변경 및 부분 히터 단선 여부를 정확하게 구분 판단하여 외란이나 목표값 변경에 의해 오동작이 발생하지 않도록 하는 것을 그 기술적 요지로 한다. In the heater disconnection detecting method according to the present invention, the detection function is automatically performed, and it is possible to accurately distinguish whether the disturbance, the target value change, and the partial heater disconnection are judged so that malfunctions do not occur due to the disturbance or the target value change. Make a point.

도면에 도시한 바와 같이, 본 발명에 따른 히터 단선 검출 방법은, 도 2에 도시한 형태인 병렬 연결된 히터 중에서 일부가 단선된 것을 검출하는 방법으로서, 먼저 출력 변화량(DMV)과 검출 전류의 변화량(DHBC)을 회귀 분석적 방법으로 산출한다(S110). As shown in the drawing, the heater disconnection detecting method according to the present invention is a method of detecting that a part of the parallel-connected heaters of the form shown in FIG. 2 is disconnected. First, the amount of change in the output change amount DMV and the detection current ( DHBC) is calculated by the regression analysis method (S110).

출력 변화량(DMV)을 구하는 수학식은 다음과 같다. The equation for obtaining the output change amount DMV is as follows.

Figure 112012087882415-pat00001
Figure 112012087882415-pat00001

출력 변화량(DMV)을 회귀식으로 구하여 안정된 출력이 되었음을 판단한다. The output change amount (DMV) is determined regressively to determine that the output is stable.

예를 들면, 도 6에 도시한 바와 같이, -5%〈DMV〈+5%이면 출력이 안정되었다고 판단할 수 있다. For example, as shown in Fig. 6, when -5% < DMV < + 5%, it can be determined that the output is stable.

검출 전류의 변화량(DHBC) 또한 출력 변화량(DMV)과 동일한 회귀식으로 산출할 수 있다. The change amount (DHBC) of the detected current can also be calculated by the same regression equation as the change amount (DMV) of the output.

도 5에서 MV는 출력량을 의미한다. In FIG. 5, MV means an output amount.

그 다음에, 산출된 출력 변화량(DMV)을 이용하여 검출 시작 시점을 찾아낸다(S120). Next, the detection start time is found using the calculated output change amount DMV (S120).

그 다음에, 산출된 출력 변화량(DMV)과 검출 전류의 변화량(DHBC)을 이용하여 외란 또는 목표값의 변화와 부분 히터 단선 여부를 판단한다(S130). Next, the output change amount DMV and the change amount DHBC of the detected current are used to determine whether the disturbance or the target value is changed and whether the partial heater is disconnected (S130).

예를 들면, 도 7에 도시한 바와 같이, 출력 변화량(DMV)이 DMV≥+5% 또는 DMV≥-5%로서 비안정되면 외란 또는 목표값의 변화로 판단할 수 있다. 출력 변화량(DMV)이 0 (여기서 '0'은 임의 요소임) 이상이면서 검출 전류의 변화량(DHBC)이 설정값 미만으로 떨어지면 부분 히터 단선으로 판단한다. 예를 들면, 도 8에 도시한 바와 같이, 출력 변화량(DMV)이 안정되었다가 DMV≤0이고 DHBC〉3A이면 부분 히터 단선으로 판단한다. For example, as shown in FIG. 7, when the output change amount DMV is unstable as DMV≥ + 5% or DMV≥-5%, it may be determined as a disturbance or a change in the target value. If the output change amount DMV is equal to or greater than zero (where '0' is an arbitrary element) and the change amount of detection current DHBC falls below the set value, it is determined as a partial heater disconnection. For example, as shown in Fig. 8, when the output change amount DMV is stabilized and DMV? 0 and DHBC > 3A, it is judged as partial heater disconnection.

마지막으로, 부분 히터 단선인 것으로 판단되면 히터 단선을 외부에 알리기 위해 경보를 발생한다(S140). Finally, when it is determined that the heater is partly broken, an alarm is generated to inform the heater disconnection to the outside (S140).

이와 같이, 본 발명을 적용하면, 검출 기능이 자동으로 이루어질 뿐만 아니라 외란, 목표값 변경 및 부분 히터 단선 여부를 정확하게 판단함으로써 외란이나 목표값 변경에 의한 오동작을 방지할 수가 있다. In this way, when the present invention is applied, not only the detection function is automatically performed, but also it is possible to prevent the malfunction due to the disturbance or the target value change by accurately determining whether the disturbance, the target value change, and the partial heater are disconnected.

도 7, 8에서 MV는 출력량, HBC는 검출 전류를 의미한다. In FIG. 7, 8, MV means output quantity and HBC means detection current.

이러한 히터 단선 검출 방법을 전력조정기(TPR)에 적용하는 경우에는 원가 절감의 효과를 기대할 수 있다. When the heater disconnection detection method is applied to a power regulator (TPR), cost reduction can be expected.

한편, 본 발명에 따른 히터 단선 검출 방법을 한정된 실시예에 따라 설명하였지만, 본 발명의 범위는 특정 실시예에 한정되는 것은 아니며, 본 발명과 관련하여 통상의 지식을 가진자에게 자명한 범위내에서 여러 가지의 대안, 수정 및 변경하여 실시할 수 있다. On the other hand, although the heater disconnection detection method according to the present invention has been described according to a limited embodiment, the scope of the present invention is not limited to a specific embodiment, within the scope obvious to those skilled in the art with respect to the present invention. Many alternatives, modifications and variations can be made.

따라서, 본 발명에 개시된 실시예 및 첨부된 도면들은 본 발명의 기술 사상을 한정하기 위한 것이 아니라 설명하기 위한 것이고, 이러한 실시예 및 첨부된 도면에 의하여 본 발명의 기술 사상의 범위가 한정되는 것은 아니다. 본 발명의 보호 범위는 아래의 청구범위에 의하여 해석되어야 하며, 그와 동등한 범위 내에 있는 모든 기술 사상은 본 발명의 권리범위에 포함되는 것으로 해석되어야 할 것이다. Therefore, the embodiments disclosed in the present invention and the accompanying drawings are intended to illustrate and not to limit the technical spirit of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments and the accompanying drawings . The scope of protection of the present invention should be construed according to the following claims, and all technical ideas falling within the scope of the same shall be construed as falling within the scope of the present invention.

Claims (2)

삭제delete 히터 단선 검출 방법으로서,
출력 변화량(DMV)과 검출 전류의 변화량(DHBC)을 회귀 분석적 방법으로 산출하는 단계와;
산출된 출력 변화량(DMV)을 이용하여 검출 시작 시점을 찾아내는 단계와;
산출된 출력 변화량(DMV)과 검출 전류의 변화량(DHBC)을 이용하여 외란 또는 목표값의 변화와 부분 히터 단선 여부를 판단하되, 출력 변화량(DMV)이 비안정되면 외란 또는 목표값의 변화로 판단하고, 출력 변화량(DMV)이 안정되었다가 출력 변화량(DMV)이 0 이상이면서 검출 전류의 변화량(DHBC)이 설정값 미만으로 떨어지면 부분 히터 단선으로 판단하는 단계와;
부분 히터 단선인 것으로 판단되면 경보를 발생하는 단계를 포함하여 이루어진 것을 특징으로 하는 히터 단선 검출 방법. As a heater disconnection detection method,
Calculating a change amount of the output change amount DMV and a change amount of the detection current DHBC by a regression analysis method;
Finding a detection start time using the calculated output change amount DMV;
The output change amount (DMV) and the change amount of the detection current (DHBC) are used to determine whether the disturbance or the target value is changed and the partial heater is disconnected. Determining the partial heater disconnection when the output change amount DMV is stabilized and the output change amount DMV is 0 or more and the change amount DHBC of the detection current falls below a set value;
And a step of generating an alarm if it is determined that the heater is partly disconnected.
KR1020120120099A 2012-10-29 2012-10-29 Method for detecting heater disconnecting KR101383158B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022262334A1 (en) * 2021-06-16 2022-12-22 艾欧史密斯(中国)热水器有限公司 Method and apparatus for determining fault of heating apparatus, and electric water heater

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080072273A (en) * 2007-02-01 2008-08-06 세메스 주식회사 Apparatus for detecting heater disconnecting and method thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080072273A (en) * 2007-02-01 2008-08-06 세메스 주식회사 Apparatus for detecting heater disconnecting and method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022262334A1 (en) * 2021-06-16 2022-12-22 艾欧史密斯(中国)热水器有限公司 Method and apparatus for determining fault of heating apparatus, and electric water heater

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