KR102668697B1 - Leakage Current and Fire Possibility Detection Apparatus that May Occur in the Soldering Rron - Google Patents

Abstract

A device for detecting leakage current and potential fire that may occur in a soldering iron is disclosed.
According to one aspect of this embodiment, in the sensing device that supplies power to the soldering iron and detects the possibility of a fire occurring in the soldering iron or leakage current occurring in the soldering iron, a temperature sensor that senses the temperature of the approaching soldering iron and the sensing device are in contact with the soldering iron. A leakage current sensor that detects whether and how much leakage current occurs in the iron, a power receiver that receives power from the outside to supply power to the iron, and an AC that converts the form of power supplied from the power receiver and supplies it to the iron. /DC converter and a power supply unit that supplies the power converted by the AC/DC converter to the iron, and receives the temperature sensor or the sensing value of the leakage current, and whether to supply power to the iron according to the size of the sensed value. It provides a device for detecting leakage current and fire possibility of a soldering iron, characterized in that it includes a control unit that controls.

Description

Leakage Current and Fire Possibility Detection Apparatus that May Occur in the Soldering Rron}

This embodiment relates to a device and system that detects leakage current or the possibility of fire that may occur in a soldering iron.

The content described in this section simply provides background information for this embodiment and does not constitute prior art.

A typical electric iron is a device that melts the weld material by applying power to the heating rod and conducting the generated heat to the soldering iron tip inserted into the heating rod. The electric iron melts the weld material, the weld material is placed on the weld object, and welding proceeds.

However, when AC power is applied to the heating rod, an electric field is formed around the heating rod. If a conductor is located within the range of the electric field, a current is generated in the conductor.

Accordingly, a current is induced in the soldering iron tip that is in contact with the heating rod that generates an electric field. In addition, even if the heating rod is made of a material with high heat resistance and insulation, when the heating rod rises to a high temperature, the thermal electron movement of the mineral itself becomes active, and the heat resistance and insulation deteriorate, causing the current to heat the heating rod to leak, causing leakage. An electric current is generated.

When soldering various electronic devices with an iron tip that generates leakage current, it affects precision electronic circuits or IC chips, which are sensitive precision components, and causes various problems such as performance degradation, damage, and malfunction.

Due to this problem, the generation of leakage current at the tip of the soldering iron must be avoided.

Previously, whether leakage current occurred at the tip of the soldering iron was measured using a separate sensor. Separately from the operation of the soldering iron, a separate sensor was placed to measure leakage current to determine whether leakage current occurred. However, there have been inconveniences due to the fact that a separate sensor must be provided to measure whether leakage current occurs in the soldering iron, and the sensor must be placed separately to check.

The purpose of one embodiment of the present invention is to provide a device and system that is connected to a soldering iron and can supply power to the soldering iron while simultaneously detecting leakage current or the possibility of fire occurring in the soldering iron.

According to one aspect of this embodiment, in the sensing device that supplies power to the soldering iron and detects the possibility of a fire occurring in the soldering iron or leakage current occurring in the soldering iron, a temperature sensor that senses the temperature of the approaching soldering iron and the sensing device are in contact with the soldering iron. A leakage current sensor that detects whether and how much leakage current occurs in the iron, a power receiver that receives power from the outside to supply power to the iron, and an AC that converts the form of power supplied from the power receiver and supplies it to the iron. /DC converter and a power supply unit that supplies the power converted by the AC/DC converter to the iron, and receives the temperature sensor or the sensing value of the leakage current, and whether to supply power to the iron according to the size of the sensed value. It provides a device for detecting leakage current and fire possibility of a soldering iron, characterized in that it includes a control unit that controls.

According to one aspect of this embodiment, the soldering iron leakage current and fire possibility detection device is disposed between the power supply unit and the AC/DC converter, and includes a switch that controls electrical connection between the power supply unit and the AC/DC converter. It is characterized in that it further includes.

According to one aspect of this embodiment, the control unit controls the switch to prevent power from being supplied to the soldering iron when the sensing value of the temperature sensor or the leakage current exceeds a preset standard value.

According to one aspect of this embodiment, the soldering iron leakage current and fire possibility detection device further includes a communication unit that transmits the temperature sensor or the sensing value of the leakage current to the outside or receives a control signal from the outside according to the control of the control unit. It is characterized by including.

According to one aspect of this embodiment, in the soldering iron leakage current and fire possibility detection system that detects the possibility of fire or the occurrence of leakage current while welding a weldment to a welding object, the soldering iron leakage current and fire possibility detection device and the soldering iron Receives power from a leakage current and fire possibility detection device, and receives the status of the iron from a soldering iron that places the welded object on the welding target and performs welding, and from the iron leakage current and fire possibility detection device, according to the state of the iron. A soldering iron leakage current and fire possibility detection system is provided, which includes a management server that transmits a control signal.

According to one aspect of this embodiment, there are a plurality of ironing iron leakage current and fire possibility detection devices, and the management server receives the status of each ironing machine connected to it from each ironing iron leakage current and fire possibility detection device, and the It is characterized by transmitting a control signal according to the status to each soldering iron leakage current and fire possibility detection device.

As described above, according to one aspect of the present embodiment, it is connected to the iron and supplies power to the iron, and at the same time detects leakage current or the possibility of fire that may occur in the iron, so that it can be processed all with one device. there is.

Figure 1 is a diagram showing the configuration of a soldering iron leakage current and fire possibility detection system according to an embodiment of the present invention.
Figure 2 is a diagram showing an example of an implementation of a device for detecting leakage current and the possibility of fire in an iron according to an embodiment of the present invention.
Figure 3 is a diagram showing the configuration of a device for detecting leakage current and the possibility of fire in an iron according to an embodiment of the present invention.
Figure 4 is a graph showing the configuration of a device for detecting leakage current and fire possibility of a soldering iron equipped with a temperature sensor according to an embodiment of the present invention.
Figure 5 is a circuit diagram of a leakage current sensor according to an embodiment of the present invention.
Figure 6 is a diagram showing the configuration of a soldering iron contact portion according to an embodiment of the present invention.

Since the present invention can make various changes and have various embodiments, specific embodiments will be illustrated in the drawings and described in detail. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention. While describing each drawing, similar reference numerals are used for similar components.

Terms such as first, second, A, and B may be used to describe various components, but the components should not be limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, a first component may be named a second component without departing from the scope of the present invention, and similarly, the second component may also be named a first component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when a component is referred to as being “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "include" or "have" should be understood as not precluding the existence or addition possibility of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification. .

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as generally understood by a person of ordinary skill in the technical field to which the present invention pertains.

Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless explicitly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Additionally, each configuration, process, process, or method included in each embodiment of the present invention may be shared within the scope of not being technically contradictory to each other.

Figure 1 is a diagram showing the configuration of a soldering iron leakage current and fire possibility detection system according to an embodiment of the present invention.

Referring to FIG. 1, the soldering iron leakage current and fire possibility detection system 100 (hereinafter abbreviated as "detection system") according to an embodiment of the present invention includes a soldering iron 110, a soldering iron leakage current and fire possibility detection device. (120, hereinafter abbreviated as “sensing device”) and a management server 130.

The soldering iron 110 receives power from the sensing device 120 and generates heat to seat the welded material on the welding target and proceed with welding. The iron includes a heating element that receives power and generates heat, and an iron tip that conducts heat generated from the heating element. The heat generated from the heating part is conducted to the tip of the iron, and the iron 110 applies heat to the welded material to proceed with welding.

The sensing device 120 supplies power to the soldering iron 110 and detects the temperature of the soldering iron 110 or whether leakage current occurs.

The sensing device 120 supplies power to the iron 110. Each of the sensing devices 120 receives AC power from the outside, and converts the AC power into DC power so that the soldering iron 110, particularly the heating unit within the soldering iron 110, can generate heat. Accordingly, the soldering iron 110 can generate heat by receiving power from the sensing device 120.

The sensing device 120 detects the temperature of the soldering iron 110 or whether leakage current occurs. The sensing device 120 includes a sensor for detecting the temperature of the soldering iron 110 and a sensor for detecting a resistance value of the soldering iron 110. The detection device 120 detects the temperature of the soldering iron 110 that is close to it and detects the possibility of a fire occurring from a change in the temperature of the soldering iron 110. Additionally, the sensing device 120 indirectly detects whether leakage current is generated from the soldering iron 110 by measuring the resistance value of the soldering iron 110 that is in contact with it. When leakage current occurs in the soldering iron 110, a change in resistance value inevitably occurs. The detection device 120 uses these characteristics to detect the resistance value of the soldering iron 110 and indirectly measures whether leakage current occurs from the soldering iron 110.

The sensing device 120 transmits the measured results to the management server 130 or an administrator terminal (not shown), or receives a control signal from the management server 130 or an administrator terminal (not shown). The sensing device 120 can transmit the measurement results to the management server 130 or an administrator terminal (not shown), which allows the administrator to recognize the status of each soldering iron 110. The management server 130 or an administrator terminal (not shown) can recognize the status of each soldering iron 110 and give appropriate instructions according to the status of the soldering iron 110, and the detection device 120 can use the management server 130 or A control signal can be received from an administrator terminal (not shown) and the soldering iron 110 connected thereto can be controlled accordingly.

The management server 130 communicates with each sensing device 120, receives the status of the soldering iron 110 from each sensing device 120, and transmits a control signal according to the status of the soldering iron 110.

The management server 130 communicates with a plurality of sensing devices 120 and manages each sensing device 120 and each soldering iron 110 connected to them. The management server 130 communicates with a plurality of sensing devices 120 within its communication range and receives the status of the soldering iron 110 from each sensing device. If the management server 130 determines that separate control is necessary based on the received status, it may directly perform control with the sensing device 120. For example, when the temperature of a specific soldering iron 110 rises above a preset standard value, the sensing device 120 connected to the soldering iron 110 can be used to control the power supply to the soldering iron 110. Alternatively, if the leakage current in a specific soldering iron 110 exceeds a preset standard value, the management server 130 outputs it or transmits it to an administrator terminal (not shown) so that the administrator can replace the soldering iron. Since the management server 130 can receive and determine the status of each soldering iron 110 from the plurality of sensing devices 120, the manager can easily determine the status of each soldering iron 110 using the management server 130. Thus, control appropriate to the state can be performed.

Figure 2 is a diagram illustrating an embodiment of a device for detecting leakage current of a soldering iron and the possibility of fire according to an embodiment of the present invention, and Figure 3 is a diagram illustrating a leakage current of a soldering iron according to an embodiment of the present invention according to an embodiment of the present invention. This is a diagram showing the configuration of a current and fire possibility detection device.

Referring to Figures 2 and 3, the sensing device 120 according to an embodiment of the present invention includes a temperature sensor 210, a leakage current sensor 220, a power supply unit 230, a power receiver 240, and a vent hole ( It includes a vent hole, 250), an AC/DC converter 310, a control unit 320, a communication unit 330, and a switch (not shown).

The temperature sensor 210 senses the temperature of the approaching soldering iron 110. The temperature sensor 210 may be implemented as a thermocouple resistor. The temperature sensor 210 is implemented as a thermocouple resistor, and its resistance value may vary depending on the temperature of the approaching soldering iron 110. The control unit 320 may sense the temperature of the soldering iron 110 by measuring the resistance value (or the voltage across both ends of the temperature sensor) of the temperature sensor 210 (thermocouple resistance).

The temperature sensor 210 is mounted within the sensing device 120 as shown in FIG. 4 .

Figure 4 is a graph showing the configuration of a device for detecting leakage current and fire possibility of a soldering iron equipped with a temperature sensor according to an embodiment of the present invention.

Thermocouple resistors are implemented in the form of two different metals forming a single contact point. The temperature measurement object approaches the contact part of the thermocouple resistor, and the voltage applied to both ends of the thermocouple resistor can be measured at the opposite end of the contact part (formed by each metal).

The sensing device 120 includes a first fixing part 410a where one end (contact part) of the thermocouple resistor can be fixed so that the temperature sensor 210 can be placed outside the device 120, and a thermocouple resistor. Second fixing parts 410b and 410c, each of which can be fixed at the opposite end, a handle 420 that allows the position of the first fixing part 410a to be raised and lowered, and a handle formed inside the device 120 ( It includes a connection plate 430 that allows the first fixing part 410a to rise and fall together as the 420) rises and falls, and an elastic part 440 that allows the handle 420 to be positioned in the correct position. do.

One end of the thermocouple resistor is fixed to the first fixing part 410a.

Opposite ends of the thermocouple resistors are fixed to each of the second fixing parts 410b and 410c.

The handle 420 is located on the upper part of the first fixing part 410a and receives an external force that allows the first fixing part 410a to rise and fall.

The connection plate 430 connects both the handle 420 and the first fixing part 410a to each other, allowing the first fixing part 410a to be raised and lowered by an external force applied to the handle 420. The connection plate 430 is located inside the sensing device 120 and has a length that is at least longer than the gap between the handle 420 and the first fixing part 410a. One end is coupled to the handle 420 by a coupling portion 432, and the other end is coupled to the first fixing portion 410a by a coupling portion 434. Accordingly, when an external force is applied to cause the handle 420 to descend from the outside, the first fixing part 410a connected to the handle 420 by the connecting plate 430 is also moved along with it. When the first fixing part 410a is lowered by an external force, the first fixing part 410a may become closer to the second fixing parts 410b and 410c. Accordingly, the manager can easily fix the temperature sensor 210 to each fixing part. Conversely, when installation is completed, the first fixing part 410a rises due to an external force applied to the handle or a restoring force of the elastic part 440, and prevents the temperature sensor 210 from coming off.

In order to be able to fully operate without deviating from its position inside the device 120, the connection plate 430 includes a through hole 436 having a preset length, a separation prevention pillar 438a, and a separation prevention plate 438b. do. Since the connection plate 430 must be coupled to the handle 420 and the first fixing part 410a, it is placed in close contact with the surface of the device 120 as much as possible. At this time, to prevent the connection plate 430 from leaving its position from the surface of the device 120 to the inside of the device 120 (in the direction away from the surface), a through hole 436, a departure prevention pillar 438a, and It further includes a separation prevention plate (438b).

The through hole 436 is formed to have a length longer than the maximum length by which the handle 420 or the first fixing part 410a can be raised and lowered and a preset width.

The separation prevention pillar 438a has a diameter smaller than the preset width of the through hole 436 and is disposed within the through hole 436. As the separation prevention pillar 438a has the above-mentioned diameter and is disposed within the through hole 436, the connecting plate 430 is positioned in the through hole 436 without interfering with the raising and lowering of the connecting plate 430. It can prevent deviation in the width direction.

The separation prevention plate 438b has a diameter larger than the preset width of the through hole 436, and is coupled to the separation prevention pillar 438a on the outside of the connection plate 430 based on the direction away from the surface of the device 120. do. That is, the connection plate 430 is located between the separation prevention plate 438b and the surface of the device 120. As the separation prevention plate 438b is coupled with the separation prevention pillar 438a at this position, the connection plate 430 can be prevented from being separated in a direction away from the surface of the device 120.

Since the connection part 430 includes a through hole 436, a separation prevention pillar 438a, and a separation prevention plate 438b, it is fixed and cannot be separated in directions other than ascending or descending.

The elastic portion 440 is connected to one end of the connecting portion 430 in the direction in which the coupling portion 432 is located, and applies a restoring force to the connecting portion 430. As described above, when the handle 420 receives an external force and lowers the connection part 430, the elastic part 440 applies a restoring force to the connection part 430, and when the external force applied to the handle 420 is removed, the connection part 420 (430) is positioned at the correct position (the position where the first fixing part is furthest from the second fixing part). Accordingly, except in situations where the first fixing part 410a is brought close to the second fixing parts 410b and 410c for mounting the temperature sensor 210 by receiving an external force, the connecting part 430 is always positioned in the correct position to maintain temperature Separation of the sensor 210 can be prevented.

However, the sensing device 120 does not always have to have the above-described configurations 420 to 440 so that the temperature sensor 210 can be mounted on each fixing part 410a to 410c.

Some or all of the first fixing part 410a and the second fixing parts 410b and 410c may be fixed to the sensing device 120 with a spring (not shown). For example, a spring is connected to one end of the first fixing part 410a and the second fixing part 410b, 410c close to the surface of the sensing device 120, and the spring connected to the fixing part is connected to the sensing device 120. can be connected to As a result, some or all of the first fixing part 410a and the second fixing parts 410b and 410c can be raised or lowered vertically upward (y-axis), or can move closer to or farther away from each other on the x-z plane. there is. For example, the first fixing part 410a may rise and fall on the y-axis, and may move closer to or move away from the second fixing parts 410b and 410c on the z-axis. As some or all of the first fixing part 410a and the second fixing parts 410b and 410c operate as described above, the temperature sensor 210 can be more easily placed on each fixing part, and the temperature sensor 210 can be more easily placed on each fixing part by the manager. It can be more easily detached. For example, when the manager fixes the temperature sensor 210 to each fixing part, the first fixing part 410a is lowered from the y-axis in the -y-axis direction, so that the temperature sensor 210 can be more easily attached to each fixing part. The temperature sensor 210 can be mounted or detached from each fixture. Alternatively, by moving the first fixing part 410a along the -z axis, the manager can more easily mount the temperature sensor 210 on each fixing part or detach the temperature sensor 210 from each fixing part.

Referring again to FIGS. 2 and 3, the leakage current sensor 220 senses the leakage current of the soldering iron 110 that is in contact with it. Leakage current occurring in the soldering iron 110, especially the soldering iron tip, is caused by a change in the resistance value of the soldering iron 110. Accordingly, the leakage current sensor 220 can detect a change in the resistance value of the soldering iron 110, and indirectly measure whether or not a leakage current is generated and the amount generated according to the change and amount of change. The structure of leakage current 220 is shown in Figures 5 and 6.

FIG. 5 is a circuit diagram of a leakage current sensor according to an embodiment of the present invention, and FIG. 6 is a diagram showing the configuration of a soldering iron contact portion according to an embodiment of the present invention.

Referring to FIG. 5, the leakage current sensor 220 has a first resistor 510, a second resistor 520, and a contact portion 530 connected in series, and the detection voltage (V _in ) is connected in series to the first resistor 510. ) forms an open circuit that is being applied. At this time, when the iron 110 comes into contact with the contact part 530, the first resistance 510, the second resistance 520, and the iron (internal resistance) are generated by the internal resistance of the iron 110 along the contact part 530. ) forms a closed loop. At this time, the control unit 320 measures the internal resistance of the soldering iron by measuring the voltage (V _out ) applied across the second resistance 520 and the soldering iron 110 as follows.

Here, R _ion refers to the resistance value of the soldering iron 110 , R ₂ refers to the resistance value of the second resistor 520 , and R ₁ refers to the resistance value of the first resistor 510 . Since the resistance value of the first resistor 510, the resistance value of the second resistor 520, and the initial resistance value of the soldering iron 110 are already known values, the control unit 320 measures V _out to determine the internal resistance of the soldering iron. You can measure whether or not there is a change and the amount of change. As described above, since a change in the internal resistance of the soldering iron 110 occurs due to the generation of leakage current, the control unit 320 can measure whether leakage current occurs and the amount generated from the change in the internal resistance of the soldering iron 110.

At this time, the contact portion 530 may be implemented as shown in FIG. 6. The contact portion 530 includes a measuring plate 610 and a pillar 620.

The measuring plate 610 is a part that contacts the tip of the soldering iron 110, and is made of metal because it must be heat-resistant and have excellent electrical conductivity. The measurement plate 610 may have a thickness below a preset reference value, thereby reducing the resistance of the measurement plate 610 itself and increasing the accuracy of the measurement value.

The pillar 620 electrically connects the measurement plate 610 and the sensing device 120, and more specifically, the second resistor 520. The pillar 620, like the measurement plate 610, must be resistant to heat and have excellent electrical conductivity, so it is made of metal. Additionally, like the measurement plate 610, the height of the pillar 620 may be minimized (below a preset standard value) to reduce its resistance.

As the contact portion 530 is implemented in this way, damage can be minimized even by contact with the soldering iron 110, and the internal resistance (change) of the soldering iron 110 can be measured relatively accurately.

Referring again to FIGS. 2 and 3, the sensing device 120 includes a power supply unit 230, a power reception unit 240, and an AC/DC converter 310. The power receiver 240 is connected to the outside, and (alternating current) power is supplied from the outside to power the soldering iron 110. Typically, external (AC) commercial power may be supplied to the power receiver 240.

The AC/DC converter 310 converts the form of power supplied from the power receiver 240 and supplies it to the soldering iron 110. The type of power to be supplied to the soldering iron 110 (alternating current/direct current) may be different from the type of power applied from the outside to the power receiver 240 (alternating current/direct current). The AC/DC converter 310 can convert the type of power applied to the power receiver 240 into the type of power to be supplied to the soldering iron 110 and supply power of an appropriate type to the soldering iron 110. For example, AC power may be applied from the outside through the power receiver 240, and the AC/DC converter 310 may convert it into DC power and supply it to the soldering iron 110.

The power supply unit 230 supplies power converted by the AC/DC converter 310 to the iron 110. The power supply unit 230 has a structure that can be electrically connected to the soldering iron 110 and supplies power converted by the AC/DC converter 310 to the soldering iron 110. For example, the power supply unit 230 is implemented in the form of a receptacle, and one component of the soldering iron 110 is implemented in the form of a connector, so that the two can be detached and whether or not they are electrically connected can be determined. The power supply unit 230 supplies power converted by the AC/DC converter 310 when the soldering iron is electrically connected.

Additionally, the control unit 320 measures the size of the power applied to the power receiver 240 and amplifies or stabilizes the applied power so that it can be converted into power of a predetermined size in the AC/DC converter 310. The place where the sensing device 120 is installed may be a place where (commercial) power supply is not smooth, or the size of the commercial power source may be different. Accordingly, if the AC/DC converter 310 converts power all at once regardless of the size of the (AC) power input from the outside, power of an appropriate size may not be applied to the soldering iron 110. This problem To prevent this, the control unit 320 measures the size of the power when power is applied from the outside through the power receiver 240. If the size of the applied power does not reach the size of the power that must be applied to the AC/DC converter 310 in order to apply an appropriate amount of power to the soldering iron 110, the control unit 320 amplifies or amplifies the applied power. It is stabilized so that it can be converted into power of a certain size in the AC/DC converter 310.

The sensing device 120 may include a switch (not shown) to control whether or not power is supplied to the power supply unit 230. A switch (not shown) controls electrical connection between the AC/DC converter 310 and the power supply unit 230. A switch (not shown) receives control from the control unit 320 and controls whether the two are electrically connected. The switch (not shown) may be implemented as a solid state relay (SSR), but is not necessarily limited to this.

The control unit 320 controls the operation of each component within the sensing device 120.

The control unit 320 recognizes the sensing value of the temperature sensor 210 and the sensing value of the leakage current sensor 220.

The control unit 320 may recognize the sensing value of the temperature sensor 210 and determine whether the temperature of the soldering iron 110 exceeds a preset standard value. This determination may be performed in the management server 130, but may also be performed and processed directly in the sensing device 120. When the sensing value of the temperature sensor 210 exceeds a preset standard value, the control unit 320 may recognize that the temperature of the soldering iron 110 becomes too high and there is a risk of fire, and accordingly, the power supply unit 230 ) to control the switch (not shown) so that power is no longer supplied to the soldering iron 110.

Likewise, the control unit 320 can recognize the sensing value of the leakage current sensor 220 and determine whether leakage current is occurring in the soldering iron 110 or whether the size of the leakage current exceeds a preset standard value. Judgment regarding leakage current can also be directly performed and processed by the control unit 320 within the detection device 120. If leakage current occurs in the soldering iron 110, or if the size of the leakage current exceeds a preset standard value, the control unit 320 no longer supplies power to the soldering iron 110 via the power supply unit 230. Control the switch (not shown) to prevent it.

Alternatively, the control unit 320 controls the communication unit 330 to recognize the sensing value of the temperature sensor 210 or the sensing value of the leakage current sensor and transmit it to the management server 130. Additionally, the control unit 320 receives a control signal from the management server 130 via the communication unit 330 and controls an appropriate configuration (usually a switch) according to the control signal.

The communication unit 330 transmits the sensing value to the management server 130 under the control of the control unit 320, or receives a control signal from the management server 130 and transmits it to the control unit 320. The communication unit 330 can perform various wireless communications such as Wi-Fi, Bluetooth, or ZigBee with the management server 130, and transmits and receives sensing values or control signals with the management server 130.

As described above, for sensing, the soldering iron 110 approaches the temperature sensor 210 or comes into contact with the leakage current sensor. Accordingly, in order to prevent damage due to the heat of the soldering iron 110, the sensing device 120, especially the outer shell of the sensing device 120, must be made of a heat-resistant metal. However, when the outer shell of the sensing device 120 is made of metal, it may be difficult for the communication unit 330 implemented within the sensing device 120 to communicate smoothly with the management server 130. To solve this problem, the sensing device 120 includes a vent hole 250 on one side. The communication unit 330 may be located around the vent hole 250, and the communication unit 330 can smoothly communicate with the management server 130 through the vent hole 250.

The above description is merely an illustrative explanation of the technical idea of the present embodiment, and those skilled in the art will be able to make various modifications and variations without departing from the essential characteristics of the present embodiment. Accordingly, the present embodiments are not intended to limit the technical idea of the present embodiment, but rather to explain it, and the scope of the technical idea of the present embodiment is not limited by these examples. The scope of protection of this embodiment should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

100: Iron leakage current and fire possibility detection system
110: soldering iron
120: Soldering machine leakage current and fire possibility detection device
130: Management server
210: temperature sensor
220: Leakage current sensor
230: power supply unit
240: Power receiver
250: vent hole
310: AC/DC converter
320: control unit
330: Department of Communications
410: fixing part
420: handle
430: Connection plate
432, 434: joint
436: Through hole
438a: Breakaway prevention pillar
438b: Breakaway prevention plate
440: elastic part
510, 520: Resistance
530: Contact portion
610: Measuring plate
620: pillar

Claims (6)

In the detection device that supplies power to the iron and detects the possibility of fire in the iron or leakage current occurring in the iron,
A temperature sensor that senses the temperature of the approaching soldering iron;
A leakage current sensor that senses whether and how much leakage current occurs in the iron that is in contact with the soldering iron;
a power receiver that receives power from the outside to supply power to the soldering iron;
An AC/DC converter that converts the form of power supplied from the power receiver and supplies it to the soldering iron;
a power supply unit that supplies power converted by the AC/DC converter to the soldering iron; and
It includes a control unit that receives a sensing value of the temperature sensor or the leakage current and controls whether or not to supply power to the iron according to the size of the sensing value,
The leakage current sensor forms an open circuit in which a first resistor, a second resistor, and a contact part are connected in series, and a detection voltage is applied to the first resistor,
When the soldering iron comes into contact with the contact portion, the first resistance, the second resistance, and the internal resistance of the soldering iron form a closed circuit due to the internal resistance of the soldering iron along the contact portion,
The control unit measures the internal resistance of the soldering iron by measuring the voltage applied across the second resistance and the soldering iron as shown in the following equation, and measures the occurrence and amount of leakage current from the soldering iron leakage current and fire. Possibility detection device.

Here, V _out is the voltage applied across the second resistor and the soldering iron, V _in is the voltage being applied to the first resistor, R ₁ is the resistance value of the first resistor, and R ₂ is the second resistor. The resistance value of the resistor and R _ion refer to the internal resistance value of the soldering iron. According to paragraph 1,
A soldering iron leakage current and fire possibility detection device, further comprising a switch disposed between the power supply unit and the AC/DC converter to control electrical connection between the power supply unit and the AC/DC converter. According to paragraph 2,
The control unit,
A soldering iron leakage current and fire possibility detection device, characterized in that when the temperature sensor or the sensing value of the leakage current exceeds a preset standard value, the switch is controlled to prevent power from being supplied to the ironing iron. According to paragraph 1,
The soldering iron leakage current and fire possibility detection device further comprises a communication unit that transmits the temperature sensor or the sensing value of the leakage current to the outside or receives a control signal from the outside according to the control of the control unit. In the soldering iron leakage current and fire possibility detection system that detects the possibility of fire or the occurrence of leakage current while welding the welded product to the welding object,
Paragraph 4, soldering iron leakage current and fire possibility detection device;
A soldering iron that receives power from the soldering iron leakage current and fire possibility detection device, places the welded object on the welding target, and performs welding; and
A management server that receives the status of the soldering iron from the soldering iron leakage current and fire possibility detection device and transmits a control signal according to the state of the soldering iron.
A soldering iron leakage current and fire possibility detection system comprising a. According to clause 5,
The soldering iron leakage current and fire possibility detection devices are plural,
The management server receives the status of each soldering iron connected to itself from each ironing iron leakage current and fire possibility detection device, and transmits a control signal according to the state of each ironing machine to each ironing iron leakage current and fire possibility detection device. Soldering machine leakage current and fire possibility detection system.

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