WO2024076025A1

WO2024076025A1 - Maximum temperature measurement device

Info

Publication number: WO2024076025A1
Application number: PCT/KR2023/013713
Authority: WO
Inventors: 홍진영; 이동준; 강우정; 김종현
Original assignee: 주식회사 필드큐어
Priority date: 2022-10-07
Filing date: 2023-09-13
Publication date: 2024-04-11

Abstract

A maximum temperature measurement device according to an embodiment of the present invention comprises: a plurality of temperature sensors; and a maximum temperature output unit which is provided with outputs of the respective temperature sensors and outputs a maximum temperature from among the temperatures measured by the plurality of temperature sensors, whereby a maximum temperature value of a temperature sensor where the maximum temperature occurs can be accurately and quickly measured.

Description

maximum temperature measuring device

The present invention relates to a maximum temperature measurement device, and more specifically, to a maximum temperature measurement device that can minimize errors and noise in maximum temperature measurement.

Tumor Treating Fields (TTFields) is a proven cancer treatment that has obtained FDA approval for relapsed glioblastoma and newly diagnosed glioblastoma.

An electric field tumor treatment system for delivering a therapeutic electric field to a target area of an object consists of a generator (alternating current signal generator), a distributor, and a plurality of electrode pads.

According to US Patent Nos. 8,715,203 and 8,764,675, each electrode pad consists of a plurality of electrode elements attached to the surface of an object. A typical electrode pad for a brain tumor (Glioblastoma) consists of 9 capacitively coupled individual electrodes in a 3X3 matrix structure, and a temperature sensor can be added to each individual electrode to measure the temperature between the electrode and the skin. The generator is connected to two pairs of electrode pads to cover two mutually orthogonal directions through a distributor. The distributor connects the first electrode pad pair to flow current for a certain period of time, and then selects the second electrode pad pair to flow current for a certain period of time. The current generated from the generator is connected to the selected pair of electrode pads through a distributor, and is connected to the electrodes of the first electrode pad, the skin and body of the subject to which the electrode is attached, the skin of the subject to which the electrode of the second electrode pad is attached, the The current flows along the current path created by the electrodes of the second electrode pad.

According to this method, a therapeutic electric field of a certain intensity or more is delivered to the target area of cancer cells, and this therapeutic electric field destroys cancer cells by interfering with or delaying the division of dividing cancer cells.

In this case, the current flowing between the electrode and the skin generates heat, and it is necessary to measure the temperature from an added temperature sensor to prevent skin burns due to this heat. When the measured value of each temperature sensor exceeds a certain temperature (e.g. 41 degrees), the system is paused or the intensity of the current is controlled by changing the current wave form to avoid the risk of the subject being burned. Optimization methods are presented.

In general, the interface cable between the electrode pad and the distributor is very complex, consisting of a conductor for a current path, an analog signal line for outputting temperature measurement values to a generator, and additional lines for a temperature measurement circuit. As an alternating current of hundreds of kHz or more than 1A flows, a change in the magnetic field occurs around the conductor for the current path, and this change causes unnecessary interference in the temperature analog output line, which can cause problems with accurate temperature measurement.

In other words, numerous wires are needed, including a current path to flow current to each individual electrode, a power line for a temperature measurement circuit to measure the temperature between the electrode and the skin, and an analog signal line to send the temperature measurement value.

Accordingly, since errors and unnecessary noise in the temperature measurement value are inevitably included due to the influence of the magnetic field caused by the current pass, the error and noise in the maximum temperature measurement can be minimized by using the temperature sensor in each electrode pad, There is a need for a device that can accurately and quickly measure the maximum temperature.

The purpose of the present invention to solve the above problems is to provide a maximum temperature measurement device that can minimize errors and noise in maximum temperature measurement.

A maximum temperature measuring device according to an embodiment of the present invention to solve the above problem includes a plurality of temperature sensors; and a maximum temperature output unit that receives output from each of the plurality of temperature sensors and outputs the maximum temperature among the temperatures measured by the plurality of temperature sensors.

Here, the maximum temperature output unit may measure the voltage at a predetermined first position where the outputs of each of the plurality of temperature sensors are connected and output the maximum temperature.

Here, it may further include a conversion unit that receives the results of the maximum temperature output unit and converts them into digital data.

Here, the converter may provide the result of the maximum temperature output unit converted into digital data using power line communication and may perform full-wave rectification.

Here, when the plurality of temperature sensors are temperature sensors whose resistance value decreases as the temperature rises, the maximum temperature output unit measures the voltage at the first position where the outputs of each of the plurality of temperature sensors are connected. , the voltage output at the lowest voltage may be used to output at the maximum temperature.

Here, when the plurality of temperature sensors are temperature sensors whose resistance value increases as the temperature increases, the maximum temperature output unit measures the voltage at the first position where the outputs of each of the plurality of temperature sensors are connected. , the voltage output at the highest voltage may be used to output the maximum temperature.

Here, each of the plurality of temperature sensors may be disposed on each of a plurality of electrodes constituting an electrode array for transmitting a treatment electric field.

A maximum temperature measuring device according to another embodiment of the present invention for solving the above problems includes a plurality of temperature sensors; a maximum temperature output unit that receives output from each of the plurality of temperature sensors and outputs a maximum temperature among the temperatures measured by the plurality of temperature sensors; and a maximum temperature sensor position output unit that receives the output of each of the plurality of temperature sensors and outputs the position of the temperature sensor outputting the maximum temperature among the plurality of temperature sensors.

Here, the maximum temperature sensor position output unit measures the voltage at each predetermined second position with respect to the output of each of the plurality of temperature sensors, compares the measured voltages, and outputs the maximum temperature. It may be output.

Here, it may further include a conversion unit that receives the results of the maximum temperature output unit and the maximum temperature sensor position output unit and converts them into digital data.

Here, the converter provides the results of the maximum temperature output unit and the maximum temperature sensor position output unit converted into digital data using power line communication, and may provide the results by performing full-wave rectification.

A maximum temperature measuring device according to another embodiment of the present invention for solving the above problems includes a plurality of temperature sensors; Operational Amplifier; Diode; and external power (Ve); Connected in order, the plurality of temperature sensors are temperature sensors whose resistance value decreases as the temperature rises, and are fed back to the operational amplifier between the diode and the external power supply (Ve), and the diode (Diode) Between the external power supply Ve, the outputs of each of the plurality of temperature sensors are connected, the voltage is measured at a predetermined first position, the maximum temperature is output, and the operational amplifier and the diode ( Diode), the voltage may be measured at each predetermined second position for the output of each of the plurality of temperature sensors, the measured voltage may be compared, and the position of the temperature sensor outputting the maximum temperature may be output. there is.

A maximum temperature measuring device according to another embodiment of the present invention for solving the above problems includes a plurality of temperature sensors; Operational Amplifier; Diode; and Ground; Connected in order, the plurality of temperature sensors are temperature sensors whose resistance value increases as the temperature rises, and between the diode and the ground, feedback is input to the operational amplifier, and the diode and the Between the ground, the outputs of each of the plurality of temperature sensors are connected, the voltage is measured at a predetermined first position, the maximum temperature is output, and the operational amplifier and the diode are connected. In between, the voltage may be measured at each predetermined second position for each output of the plurality of temperature sensors, the measured voltage may be compared, and the position of the temperature sensor outputting the maximum temperature may be output.

According to the maximum temperature measuring device according to an embodiment of the present invention, all temperature values of the electrode pads for applying the electric field can be compared and measured at once, so the maximum temperature value of the temperature sensor where the maximum temperature occurs can be accurately and quickly determined. It has the advantage of being able to measure, and has the effect of accurately determining the location information of the temperature sensor where the maximum temperature occurs.

In addition, when using the power line communication protocol, there is an advantage of being able to configure an interface with only two voltage lines (power and ground) to transmit the measured maximum temperature and location information of the temperature sensor.

Ultimately, according to the maximum temperature measuring device according to an embodiment of the present invention, all temperature values of the electrode pads for applying the electric field can be compared and measured at once, so the maximum temperature value and the maximum temperature of the temperature sensor where the maximum temperature occurred Since the location information of the temperature sensor where the problem occurred can be accurately determined, there is an advantage in being able to recognize and respond to risks more quickly.

1 is a circuit diagram for outputting maximum temperature information from a Negative Temperature Coefficient (NTC) type thermistor in a maximum temperature measuring device according to another embodiment of the present invention.

Figure 2 is a circuit diagram for outputting maximum temperature information from a PTC (Positive Temperature Coefficient) type thermistor in a maximum temperature measuring device according to another embodiment of the present invention.

Figure 3 is a circuit diagram for outputting maximum temperature information from a plurality of NTC type thermistors in a maximum temperature measuring device according to another embodiment of the present invention.

Figure 4 is a circuit diagram of converting maximum temperature information from a plurality of NTC type thermistors into digital information and transmitting it through a serial interface in a maximum temperature measuring device according to another embodiment of the present invention.

Figure 5 is a circuit diagram for communicating maximum temperature information from a plurality of NTC type thermistors through a power line using a voltage-to-current converter in a maximum temperature measuring device according to another embodiment of the present invention.

Figure 6 is a circuit diagram for power line communication of maximum temperature information from the plurality of NTC type thermistors of Figures 3 and 4, and is a circuit diagram for removing the polarity of the connector through a full-wave rectifier.

Figure 7 is a diagram showing the full-wave rectifier of Figure 6 configured using a diode bridge circuit according to an embodiment of the present invention.

Figure 8 shows a method of outputting temperature information of the maximum temperature sensor and position information of the temperature sensor in an operational amplifier circuit composed of a plurality of NTC thermistors, a diode and a feedback resistor connected in series in a maximum temperature measuring device according to another embodiment of the present invention. This is a circuit diagram to show.

9 to 11 are diagrams showing a method of transmitting temperature information of a maximum temperature sensor and location information of the temperature sensor to a generator or distributor through various protocols according to another embodiment of the present invention.

Figure 12 is a diagram for explaining that a plurality of maximum temperature measuring devices according to an embodiment of the present invention are installed.

Figure 13 is a diagram for explaining a maximum temperature measuring device according to an embodiment of the present invention.

Figure 14 is a diagram for explaining a maximum temperature measuring device according to another embodiment of the present invention.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. The present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention, parts that are not relevant to the description are omitted, and identical or similar components are assigned the same reference numerals throughout the specification.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only cases where it is "directly connected," but also cases where it is "electrically connected" with another element in between. . Additionally, when a part "includes" a certain component, this means that it may further include other components rather than excluding other components, unless specifically stated to the contrary.

When a part is referred to as being “on” another part, it may be directly on top of the other part or it may be accompanied by another part in between. In contrast, when a part is said to be "directly above" another part, it does not entail any other parts in between.

Terms such as first, second, and third are used to describe, but are not limited to, various parts, components, regions, layers, and/or sections. These terms are used only to distinguish one part, component, region, layer or section from another part, component, region, layer or section. Accordingly, the first part, component, region, layer or section described below may be referred to as the second part, component, region, layer or section without departing from the scope of the present invention.

The terminology used herein is only intended to refer to specific embodiments and is not intended to limit the invention. As used herein, singular forms include plural forms unless phrases clearly indicate the contrary. As used in the specification, the meaning of "comprising" refers to specifying a particular characteristic, area, integer, step, operation, element and/or ingredient, and the presence or presence of another characteristic, area, integer, step, operation, element and/or ingredient. This does not exclude addition.

Terms indicating relative space, such as “below” and “above,” can be used to more easily describe the relationship of one part shown in the drawing to another part. These terms are intended to include other meanings or operations of the device in use along with the meaning intended in the drawings. For example, if the device in the drawing is turned over, some parts described as being “below” other parts will be described as being “above” other parts. Accordingly, the exemplary term “down” includes both upward and downward directions. The device may be rotated by 90 degrees or other angles, and terms indicating relative space are interpreted accordingly.

Although not defined differently, all terms including technical and scientific terms used herein have the same meaning as those generally understood by those skilled in the art in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries are further interpreted as having meanings consistent with related technical literature and currently disclosed content, and are not interpreted in ideal or very formal meanings unless defined.

Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

1 is a circuit diagram for outputting maximum temperature information from a Negative Temperature Coefficient (NTC) type thermistor in a maximum temperature measuring device according to another embodiment of the present invention. Figure 2 is a circuit diagram for outputting maximum temperature information from a PTC (Positive Temperature Coefficient) type thermistor in a maximum temperature measuring device according to another embodiment of the present invention. Figure 3 is a circuit diagram for outputting maximum temperature information from a plurality of NTC type thermistors in a maximum temperature measuring device according to another embodiment of the present invention. Figure 4 is a circuit diagram of converting maximum temperature information from a plurality of NTC type thermistors into digital information and transmitting it through a serial interface in a maximum temperature measuring device according to another embodiment of the present invention. Figure 5 is a circuit diagram for communicating maximum temperature information from a plurality of NTC type thermistors through a power line using a voltage-to-current converter in a maximum temperature measuring device according to another embodiment of the present invention. Figure 6 is a circuit diagram for power line communication of maximum temperature information from the plurality of NTC type thermistors of Figures 3 and 4, and is a circuit diagram for removing the polarity of the connector through a full-wave rectifier. Figure 7 is a diagram showing the full-wave rectifier of Figure 6 configured using a diode bridge circuit according to an embodiment of the present invention. Figure 8 shows a method of outputting temperature information of the maximum temperature sensor and position information of the temperature sensor in an operational amplifier circuit composed of a plurality of NTC thermistors, a diode and a feedback resistor connected in series in a maximum temperature measuring device according to another embodiment of the present invention. This is a circuit diagram to show. 9 to 11 are diagrams showing a method of transmitting temperature information of a maximum temperature sensor and location information of the temperature sensor to a generator or distributor through various protocols according to another embodiment of the present invention. Figure 12 is a diagram for explaining that a plurality of maximum temperature measuring devices according to an embodiment of the present invention are installed. Figure 13 is a diagram for explaining a maximum temperature measuring device according to an embodiment of the present invention. Figure 14 is a diagram for explaining a maximum temperature measuring device according to another embodiment of the present invention.

The present invention relates to an electrode pad for use with a generator (alternating current signal generator) for delivering a therapeutic electric field to a target area of a subject. The electrode pad includes a plurality of electrode elements configured to be disposed relative to an object. Each electrode element is configured for attachment to the patient's body. A plurality of temperature sensors are arranged to sense the temperatures of the plurality of electrodes. The maximum temperature is output by simultaneously comparing the output voltage values of a plurality of temperature sensors.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, various embodiments are described with reference to the accompanying drawings, wherein like reference numerals may indicate like elements.

Figure 1 shows an embodiment in which the voltage value corresponding to the maximum temperature value is output through the NTC thermistor 100, buffer 101, diode 102, and bias resistor 103. NTC thermistors have the characteristic of decreasing resistance as temperature increases. These characteristics can be described as follows:

of the above formula

is the temperature coefficient and

is the sensitivity index or constant of the material,

represents absolute temperature. As the temperature increases, the resistance of the NTC thermistor decreases, and the voltage output to the buffer 101 also decreases.

As an example of the maximum temperature information output in FIG. 1, assuming that the temperature of the first thermistor (Ra) is higher, Ra has a lower resistance value than the second thermistor (Rb). That is, Va outputs a voltage value lower than Vb. Accordingly, the current flowing through the bias resistor 103 flows through the first diode 102a. Meanwhile, the second diode 102b is blocked. Therefore, Vout is output by adding the diode's forward voltage drop (Vd ~ 0.7V) to the voltage value Va of the thermistor with the highest temperature.

Figure 2 shows a circuit that outputs the maximum temperature when using a PTC thermistor instead of an NTC thermistor. Assuming that the temperature of the first thermistor (Ra) is higher, Ra has a higher resistance value than the second thermistor (Rb). That is, Va has a higher voltage value than Vb. Therefore, Va flows to the ground through the first diode 102b and the bias resistor 103. Meanwhile, the second diode 102b is blocked. Therefore, Vout is the voltage obtained by subtracting the forward voltage drop of the diode from the voltage value Va of the thermistor with the highest temperature.

The following drawings illustrate an NTC thermistor.

FIG. 3 shows an embodiment of a circuit that extends FIG. 1 to a plurality of temperature sensors to output a maximum temperature value. A plurality of thermistors 100 are connected in series with a buffer or voltage follower 101 and a diode 102, and each diode is connected to a bias resistor 103 at one point. The current from the power source (V+) flows through the bias resistor toward the temperature sensor with the maximum temperature, and outputs the corresponding voltage. The maximum temperature information is output through a signal line connected to the connector 200.

Figure 4 shows a digital output embodiment of a system that measures maximum temperature values from a plurality of temperature sensors. The voltage of the temperature sensor with the maximum output temperature is converted into digital information through the analog-to-digital converter 201 and transmitted to the generator or distributor through UART communication 202.

Figure 5 shows an embodiment in which voltage output corresponding to the maximum temperature from a plurality of temperature sensors is communicated through a power line through a voltage-to-current converter. The voltage-to-current converter consists of a transistor 300, a bias resistor 103, and a resistor 301 for converting the voltage of the temperature sensor into current.

Figure 6 shows an embodiment of removing the polarity of the connector 200 using a full-wave rectifier 400 in power line communication. Figure 7 is an embodiment of the full-wave rectifier 400 of Figure 6. The diode 401 is configured as a bridge circuit to full-wave rectify the input voltage.

An embodiment of the present invention shows that location information of a temperature sensor with the maximum temperature can also be obtained through a relatively simple circuit.

Figure 8 shows an embodiment of outputting temperature information and location information of a temperature sensor with the maximum temperature. The NTC thermistor 100 has a characteristic that resistance decreases as temperature increases, and as a result, the output voltage decreases as temperature increases.

For example, if the temperatures of the three thermistors (Ra, Rb, and Rc) shown in Figure 8 are Ta, Tb, and Tc, and they satisfy the condition of Ta > Tb > Tc, the output value of each thermistor is Va < Vb < Vc. satisfies the relationship. The voltage of each thermistor is input to the operational amplifier 500, which is fed back to the diode 102 and the resistor 501. The current flowing through the bias resistor 103 flows through the first diode 102a having the minimum voltage. At this time, the second diode 102b and the third diode 102c are blocked. Therefore, Va is output to Vout of the circuit. This is the same principle as described in Figure 1 above.

A value obtained by subtracting the voltage corresponding to the diode voltage drop, Vd (about 0.7 V) from Va, is output between the first amplifier 500a and the first diode 102a (502a). On the other hand, the output of the second amplifier 500b oscillates, and therefore the power source of the second amplifier, Vcc, is output between the second amplifier and the second diode 502b. Likewise, the power of the amplifier, Vcc, is output between the third amplifier 500c and the third diode 102c (502c).

In summary, the voltage output between the amplifier and the diode (502) is Va - Vd or Vcc, so using a comparator and encoder, location information of the temperature sensor where the maximum temperature occurs can be obtained.

Figure 9 is an example of outputting temperature information and location information of a temperature sensor with the maximum temperature from a plurality of temperature sensors through an analog-to-digital converter and UART. The voltage output corresponding to the maximum temperature is converted into digital data through an analog-to-digital converter. In addition, the position information of the temperature sensor corresponding to the maximum temperature obtained through the position comparator 600 consisting of a comparator and an encoder is output to a generator or distributor through communication along with the temperature data.

10 and 11 illustrate a method of power line communication of the temperature measurement value of a temperature sensor having the maximum temperature and location information of the temperature sensor among a plurality of temperature sensors. The position information of the temperature sensor is obtained through the position comparator 600, and this signal is converted into a pulse signal through the converter 601. This temperature information and location information are mixed in the mixer 602, passed through the current converter 603, and then loaded onto the power line. In 11, the temperature information is also converted into a pulse signal through the converter 605.

The output voltage of the maximum temperature sensor is converted into a pulse signal through the converter 605. In this method, both temperature information and position information are converted into pulse signals and input to the mixer 602.

Figure 12 is a diagram for explaining that a plurality of maximum temperature measuring devices according to an embodiment of the present invention are installed. Referring to FIG. 12, it shows that 4 maximum temperature measuring devices are connected according to an embodiment of the present invention. In light of this, even if 8, 16, etc. maximum temperature measuring devices are connected, each maximum temperature measuring device is It will be possible to determine that maximum temperature measurement can be performed efficiently using . Meanwhile, in Figure 12, it can be seen that each maximum temperature can be measured using each maximum temperature measuring device, and at the same time, the four devices can be integrated and used as an overall maximum temperature measuring device. .

Referring to FIG. 13, the maximum temperature measuring device 1000 according to an embodiment of the present invention for solving the above problem includes a plurality of temperature sensors 1100; and a maximum temperature output unit 1200 that receives output from each of the plurality of temperature sensors 1100 and outputs the maximum temperature among the temperatures measured by the plurality of temperature sensors.

Each of the plurality of temperature sensors 1100 may be disposed on a plurality of electrodes constituting an electrode array for transmitting a treatment electric field. The plurality of temperature sensors 1100 may be either a temperature sensor whose resistance value decreases as the temperature increases or a temperature sensor whose resistance value increases as the temperature increases.

The maximum temperature output unit 1200 may receive the output of each of the plurality of temperature sensors 1100 and output the maximum temperature among the temperatures measured by the plurality of temperature sensors.

Additionally, the maximum temperature output unit 1200 may measure the voltage at a predetermined first position where the outputs of each of the plurality of temperature sensors are connected and output the maximum temperature.

Meanwhile, it may further include a conversion unit 1400 that receives the results of the maximum temperature output unit 1200 and converts them into digital data, and the conversion unit 1400 is the maximum temperature output unit converted into digital data. The result of (1200) may be provided using power line communication, but may be provided by performing full-wave rectification.

When the plurality of temperature sensors 1100 are temperature sensors whose resistance value decreases as the temperature rises, the maximum temperature output unit 1200 is located at the first position where the outputs of each of the plurality of temperature sensors are connected. The voltage may be measured and the voltage output at the lowest voltage may be used to output the maximum temperature.

In addition, when the plurality of temperature sensors 1100 are temperature sensors whose resistance value increases as the temperature increases, the maximum temperature output unit 1200 is configured to connect the first output unit to which the outputs of each of the plurality of temperature sensors are all connected. The voltage may be measured at the location, and the voltage output at the highest voltage may be used to output the maximum temperature.

Referring to FIG. 14, a maximum temperature measuring device 2000 according to another embodiment of the present invention for solving the above problem includes a plurality of temperature sensors 2100; a maximum temperature output unit 2200 that receives output from each of the plurality of temperature sensors 2100 and outputs the maximum temperature among the temperatures measured by the plurality of temperature sensors; and a maximum temperature sensor position output unit 2300 that receives the output of each of the plurality of temperature sensors and outputs the position of the temperature sensor outputting the maximum temperature among the plurality of temperature sensors.

First, each of the plurality of temperature sensors 2100 may be disposed on each of a plurality of electrodes constituting an electrode array for transmitting a treatment electric field.

The maximum temperature output unit 2200 may measure the voltage at a predetermined first position where the outputs of each of the plurality of temperature sensors 2100 are connected and output the maximum temperature.

In particular, the maximum temperature sensor position output unit 2300 measures the voltage at each predetermined second position for the output of each of the plurality of temperature sensors 2100, compares the measured voltages, and determines the maximum temperature. It may be outputting the position of the temperature sensor being output.

In addition, it may further include a conversion unit 2400 that receives the results of the maximum temperature output unit 2200 and the maximum temperature sensor position output unit 2300 and converts them into digital data, and the conversion unit 2400 The results of the maximum temperature output unit 2200 and the maximum temperature sensor position output unit 2300 converted into digital data may be provided using power line communication, and may be provided by performing full-wave rectification.

When the plurality of temperature sensors 2100 are temperature sensors whose resistance value decreases as the temperature rises, the maximum temperature output unit 2200 is located at the first position where the outputs of each of the plurality of temperature sensors are connected. The voltage may be measured and the voltage output at the lowest voltage may be used to output the maximum temperature.

In addition, when the plurality of temperature sensors 2100 are temperature sensors whose resistance value increases as the temperature increases, the maximum temperature output unit 2200 is configured to connect the first output unit to which the outputs of each of the plurality of temperature sensors are all connected. The voltage may be measured at the location, and the voltage output at the highest voltage may be used to output the maximum temperature.

A maximum temperature measuring device according to another embodiment of the present invention to solve the above problem includes a plurality of temperature sensors; Operational Amplifier; Diode; and external power (Ve); Connected in order, the plurality of temperature sensors are temperature sensors whose resistance value decreases as the temperature rises, and are fed back to the operational amplifier between the diode and the external power supply (Ve), and the diode (Diode) Between the external power supply Ve, the outputs of each of the plurality of temperature sensors are connected, the voltage is measured at a predetermined first position, the maximum temperature is output, and the operational amplifier and the diode ( Diode), the voltage may be measured at each predetermined second position for the output of each of the plurality of temperature sensors, the measured voltage may be compared, and the position of the temperature sensor outputting the maximum temperature may be output. there is.

In addition, a maximum temperature measuring device according to another embodiment of the present invention to solve the above problem includes a plurality of temperature sensors; Operational Amplifier; Diode; and Ground; Connected in order, the plurality of temperature sensors are temperature sensors whose resistance value increases as the temperature rises, and between the diode and the ground, feedback is input to the operational amplifier, and the diode and the Between the ground, the outputs of each of the plurality of temperature sensors are connected, the voltage is measured at a predetermined first position, the maximum temperature is output, and the operational amplifier and the diode are connected. In between, the voltage may be measured at each predetermined second position for each output of the plurality of temperature sensors, the measured voltage may be compared, and the position of the temperature sensor outputting the maximum temperature may be output.

Although embodiments of the present invention have been described above with reference to the attached drawings, those skilled in the art will understand that the present invention can be implemented in other specific forms without changing the technical idea or essential features. You will be able to understand it. For example, a person skilled in the art may change the material, size, etc. of each component depending on the field of application, or combine or substitute the disclosed embodiments to implement the present invention in a form not clearly disclosed in the embodiments of the present invention, but this also may be done in a form not clearly disclosed in the embodiments of the present invention. It does not go beyond the scope of the invention. Therefore, the embodiments described above are illustrative in all respects and should not be understood as limiting, and such modified embodiments should be considered to be included in the technical idea described in the claims of the present invention.

1000, 2000: Maximum temperature measuring device

1100, 2100: Multiple temperature sensors

1200, 2200: maximum temperature output

2300: Maximum temperature sensor position output unit

1400, 2400: Conversion unit

Claims

A plurality of temperature sensors; and

a maximum temperature output unit that receives output from each of the plurality of temperature sensors and outputs a maximum temperature among the temperatures measured by the plurality of temperature sensors;

Maximum temperature measuring device including.
According to paragraph 1,

The maximum temperature output unit

A maximum temperature measuring device, characterized in that the voltage is measured at a predetermined first position where the outputs of each of the plurality of temperature sensors are all connected, and the maximum temperature is output.
According to paragraph 1,

A maximum temperature measuring device further comprising a conversion unit that receives the results of the maximum temperature output unit and converts them into digital data.
According to paragraph 1,

The conversion unit

A maximum temperature measuring device characterized in that the result of the maximum temperature output converted into digital data is provided using power line communication, and provided by performing full-wave rectification.
According to paragraph 2,

The maximum temperature output unit

In the case where the plurality of temperature sensors are temperature sensors whose resistance value decreases as the temperature rises, the voltage is measured at the first position where the outputs of each of the plurality of temperature sensors are connected, and the lowest voltage is output. A maximum temperature measuring device characterized in that it outputs the maximum temperature using .
According to paragraph 2,

The maximum temperature output unit

In the case where the plurality of temperature sensors are temperature sensors whose resistance value increases as the temperature rises, the voltage is measured at the first position where the outputs of each of the plurality of temperature sensors are connected, and the voltage is output as the highest voltage. A maximum temperature measuring device characterized in that it outputs the maximum temperature using .
According to paragraph 1,

Each of the plurality of temperature sensors is

A maximum temperature measuring device, characterized in that it is disposed on each of a plurality of electrodes constituting an electrode array for delivering a therapeutic electric field.
A plurality of temperature sensors;

a maximum temperature output unit that receives output from each of the plurality of temperature sensors and outputs a maximum temperature among the temperatures measured by the plurality of temperature sensors; and

a maximum temperature sensor position output unit that receives output from each of the plurality of temperature sensors and outputs the position of the temperature sensor outputting the maximum temperature among the plurality of temperature sensors;

Maximum temperature measuring device including.
According to clause 8,

The maximum temperature output unit

A maximum temperature measuring device, characterized in that the voltage is measured at a predetermined first position where the outputs of each of the plurality of temperature sensors are all connected, and the maximum temperature is output.
According to clause 8,

The maximum temperature sensor position output unit

Maximum temperature measurement, characterized in that for the output of each of the plurality of temperature sensors, the voltage is measured at each predetermined second position, the measured voltage is compared, and the position of the temperature sensor that outputs the maximum temperature is output. Device.
According to clause 8,

A maximum temperature measuring device further comprising a conversion unit that receives the results of the maximum temperature output unit and the maximum temperature sensor position output unit and converts them into digital data.
According to clause 11,

The conversion unit provides the results of the maximum temperature output unit and the maximum temperature sensor position output unit converted into digital data using power line communication, and provides the results by performing full-wave rectification.
According to clause 9,

The maximum temperature output unit is

In the case where the plurality of temperature sensors are temperature sensors whose resistance value decreases as the temperature rises, the voltage is measured at the first location where the outputs of each of the plurality of temperature sensors are connected, and the lowest voltage is output. A maximum temperature measuring device characterized in that it outputs the maximum temperature using .
According to clause 9,

The maximum temperature output unit is

In the case where the plurality of temperature sensors are temperature sensors whose resistance value increases as the temperature rises, the voltage is measured at the first position where the outputs of each of the plurality of temperature sensors are connected, and the voltage is output as the highest voltage. A maximum temperature measuring device characterized in that it outputs the maximum temperature using .
According to clause 8,

Each of the plurality of temperature sensors is

A maximum temperature measuring device, characterized in that it is disposed on each of a plurality of electrodes constituting an electrode array for delivering a therapeutic electric field.
A plurality of temperature sensors;

Operational Amplifier;

Diode; and

External power (Ve); connected in order,

The plurality of temperature sensors are temperature sensors whose resistance value decreases as the temperature rises,

Feedback is input to the operational amplifier between the diode and the external power supply (Ve),

Between the diode and the external power supply (Ve), the outputs of each of the plurality of temperature sensors are connected, and the voltage is measured at a predetermined first position to output the maximum temperature,

Between the operational amplifier and the diode, the voltage is measured at each predetermined second position for the output of each of the plurality of temperature sensors, and the measured voltage is compared to determine the maximum temperature. A maximum temperature measuring device that outputs the position of the output temperature sensor.
A plurality of temperature sensors;

Operational Amplifier;

Diode; and

Ground; connected in order,

The plurality of temperature sensors are temperature sensors whose resistance value increases as the temperature rises,

Feedback is input to the operational amplifier between the diode and the ground,

Between the diode and the ground, the outputs of each of the plurality of temperature sensors are connected, and the voltage is measured at a predetermined first position to output the maximum temperature,

Between the operational amplifier and the diode, the voltage is measured at each predetermined second position for the output of each of the plurality of temperature sensors, and the measured voltage is compared to determine the maximum temperature. A maximum temperature measuring device that outputs the position of the output temperature sensor.