Tumor electric field treatment system and electrode sheet thereof, and tumor treatment device

Abstract

The application discloses a tumor electric field treatment system and an electrode sheet and a tumor treatment device thereof, wherein the electrode sheet comprises a substrate, a plurality of electrode sheet units, a plurality of temperature sensors and a multiplexing unit arranged on the substrate, each electrode sheet unit can apply an alternating voltage, each temperature sensor is arranged corresponding to one electrode sheet unit to detect the temperature at the corresponding electrode sheet unit, the multiplexing unit is connected with each temperature sensor, and the multiplexing unit is configured to output the analog temperature signals detected by each temperature sensor in time sharing mode, so that greater temperature sensor coverage can be achieved without increasing the number of cable cores, the weight of the electrode sheet is prevented from being too large, the pasting effect of the electrode sheet is maintained, meanwhile, the electrode sheet outputs analog temperature signals, the setting of an ADC sampling unit and the like on the electrode sheet is avoided, the overall weight of the electrode sheet is further reduced, and the pasting effect of the electrode sheet is improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a tumor electric field therapy system and its electrode pads and tumor treatment equipment. Background Technology

[0002] Tumor electric field therapy is a tumor treatment method that uses an electric field generator to produce a low-intensity, medium-to-high frequency alternating electric field to interfere with the mitotic process of tumor cells. The electric field applied by this treatment method can affect the aggregation of microtubules, prevent spindle formation, inhibit the mitotic process, and induce apoptosis in cancer cells.

[0003] Currently, tumor electric field therapy systems mainly consist of an electric field generator, a converter electrically connected to the electric field generator, and multiple pairs of electrode pads electrically connected to the electric field generator via the converter. The electric field generator transmits the alternating electric signal for tumor electric field therapy to each electrode pad through the converter, and then applies the alternating electric field to the patient's tumor site for tumor electric field therapy. When the electric field is applied to the patient's body, heat accumulates at the corresponding location on the skin where the electrode pad is applied. Therefore, it is necessary to monitor the temperature of the skin surface corresponding to the tumor site in real time. If the skin temperature is too high, the intensity of the alternating electric field needs to be adjusted promptly to avoid low-temperature burns to the patient's skin.

[0004] In related technologies, each electrode pad has a thermistor element on its corresponding electrode unit, and multiple thermistor elements are connected in parallel to each other. The temperature change of the corresponding electrode unit is monitored in real time by the change in the resistance of the thermistor elements. For example, in an electrode pad with 9 electrode units, 8 thermistor elements are set, and the resistance values ​​of the 8 thermistor elements are transmitted through a 10-core cable, which includes 1 AC signal line, 1 ground line, and 8 signal lines. The coverage of the thermistor elements in this electrode pad is approximately 89% (8 / 9 ≈ 0.89). When the number of electrode units increases, if the number of thermistor elements remains unchanged, low-temperature burns to the patient's skin can easily occur. For example, in an electrode pad with 16 electrode units, 8 thermistor elements are set, and the coverage of the thermistor elements in this electrode pad is approximately 50% (8 / 16 = 0.5), meaning that the temperature of half of the electrode units cannot be monitored, easily leading to low-temperature burns to the patient's skin. If a thermistor element is set on each electrode unit to maintain the coverage of the thermistor element, then more wire cores of cable are needed. However, this will make the cable thicker and harder, increasing the difficulty of fixing the cable. At the same time, the overall weight of the electrode will increase due to the increase in the number of wire cores. This will not only affect the adhesion between the electrode and the corresponding body surface of the patient's tumor site, but also increase the burden on the patient and cause discomfort. Summary of the Invention

[0005] This invention aims to at least partially solve one of the technical problems in related technologies. Therefore, the first objective of this invention is to provide an electrode pad for a tumor electric field therapy system that achieves greater temperature sensor coverage without increasing the number of cores in the first cable, avoiding excessive weight on the electrode pad, maintaining the effective application of the electrode pad, and simultaneously outputting an analog temperature signal, eliminating the need for an ADC sampling unit on the electrode pad, further reducing the overall weight of the electrode pad, and improving the application effect.

[0006] The second objective of this invention is to provide a tumor electric field therapy system.

[0007] The third objective of this invention is to provide a tumor treatment device.

[0008] To achieve the above objectives, the present invention provides an electrode pad for a tumor electric field therapy system, comprising: a substrate; a plurality of electrode pad units, a plurality of temperature sensors, and a multiplexing unit disposed on the substrate, wherein each electrode pad unit is capable of being applied with an alternating voltage, each temperature sensor is disposed corresponding to one electrode pad unit to detect the temperature at the corresponding electrode pad unit, the multiplexing unit is connected to each of the temperature sensors, and the multiplexing unit is configured to output the analog temperature signal detected by each of the temperature sensors in a time-division manner.

[0009] Furthermore, each of the temperature sensors includes a ground terminal and a signal terminal, the multiplexing unit has multiple signal input terminals, the ground terminals of the multiple temperature sensors are connected to a common ground pin, and the signal terminal of each temperature sensor is connected to a signal input terminal of the multiplexing unit.

[0010] Furthermore, the multiplexing unit has a grounding terminal connected to a grounding pin.

[0011] Furthermore, the number of signal input terminals of the multiplexing unit is greater than or equal to the number of temperature sensors.

[0012] Furthermore, the multiplexing unit includes a first analog multiplexing switch, which includes a signal output terminal, an enable control terminal, and at least one channel control terminal. A selection channel is provided between the signal output terminal and each signal input terminal of the multiplexing unit. The first analog multiplexing switch is configured to control the selection channel according to the signals received by the enable control terminal and the at least one channel control terminal.

[0013] Furthermore, the first analog multiplexer also includes a decoder, which is configured to: when the enable control terminal receives a channel selection enable signal, control multiple selected channels to be turned on sequentially according to the channel control signal received by the channel control terminal, and output the analog temperature signal detected by each temperature sensor in a time-division manner.

[0014] Furthermore, each of the selection channels is provided with an analog switch element, the control terminal of which is connected to the decoder. Under the control of the decoder, the analog switch element turns the corresponding selection channel on or off.

[0015] Furthermore, the multiplexing unit also includes a second analog multiplexing switch and an inverter. The inverter has an input terminal and an output terminal. The input terminal of the inverter is connected to the enable control terminal of the first analog multiplexing switch. The second analog multiplexing switch has an enable control terminal connected to the output terminal of the inverter, multiple channel control terminals corresponding to each channel control terminal of the first analog multiplexing switch, and a signal output terminal connected to the signal output terminal of the first analog multiplexing switch.

[0016] Furthermore, both the first analog multiplexer and the second analog multiplexer have four channel control terminals.

[0017] Furthermore, both the first analog multiplexer and the second analog multiplexer have 16 signal input terminals.

[0018] Furthermore, each of the channel control terminals is provided with one channel control line, the enable control terminal of the first analog multiplexer is provided with one enable control line, the signal output terminal of the second analog multiplexer shares one channel output line with the signal output terminal of the first analog multiplexer, the grounding terminal of the multiplexing unit is provided with one grounding line, the power supply terminal of the multiplexing unit is provided with one DC power supply line, the grounding pin is provided with one grounding line, and the multiple electrode units are provided with one alternating signal line.

[0019] Furthermore, the temperature sensor is a thermistor.

[0020] Furthermore, the channel output line is connected to a DC power supply via a voltage divider resistor.

[0021] Furthermore, the electrode sheet unit is a dielectric element.

[0022] Furthermore, the dielectric element is a ceramic sheet.

[0023] Furthermore, each of the electrode units is provided with a perforation, and the temperature sensor is disposed within the perforation.

[0024] Furthermore, the plurality of electrode sheet units are arranged in an array.

[0025] The present invention also provides a tumor electric field therapy system, comprising: at least one pair of the aforementioned electrode pads; an adapter and an electric field generator, wherein the electric field generator is used to generate an alternating electrical signal and transmit the alternating electrical signal to each of the electrode pads through the adapter, and the adapter is used to perform AD sampling on the simulated temperature signal to obtain a temperature sampling signal and transmit the temperature sampling signal to the electric field generator.

[0026] Furthermore, it also includes: at least one pair of first connectors, each of the first connectors being adapted to connect a corresponding electrode plate to the adapter; and a second connector, the second connector being adapted to connect the electric field generator to the adapter.

[0027] Furthermore, the first connector is configured to connect the adapter to the electrode plate using a plug-in method, and the second connector is configured to connect the adapter to the electric field generator using a plug-in method.

[0028] Furthermore, the adapter includes a controller, a serial communication unit, an ADC sampling unit, and at least two I / O control units. The controller is connected to the serial communication unit, the ADC sampling unit, and each I / O control unit. The controller outputs a channel control signal to the multiplexing unit in the corresponding electrode plate through each I / O control unit, and causes the multiplexing unit in the corresponding electrode plate to output the analog temperature signal detected by the corresponding connected temperature sensor in a time-division manner. The analog temperature signal is then sampled by the ADC sampling unit, and the temperature sampling signal is transmitted to the electric field generator through the serial communication unit.

[0029] Furthermore, each of the first connectors is connected to the second connector via an alternating signal line, the second connector is connected to the serial communication unit via a receive data line and a transmit data line, the VCC pin of the second connector is connected to the power supply terminal of the controller, the GND pin of the second connector is grounded, each sampling terminal of the ADC sampling unit is connected to the output terminal of the multiplexing unit via a corresponding first connector, and the output terminal of each I / O control unit is connected to the enable terminal and channel control terminal of the multiplexing unit via the first connector.

[0030] Furthermore, the VCC pin of the second connector is also connected to the corresponding sampling terminal of the ADC sampling unit through a corresponding voltage divider resistor.

[0031] Furthermore, there are four electrode sheets.

[0032] The present invention also provides a tumor treatment device, comprising: at least one pair of the aforementioned electrode pads, or the aforementioned tumor electric field therapy system.

[0033] The electrode pads of the tumor electric field therapy system and device of the present invention, by setting a multiplexing unit on the substrate and connecting it to multiple temperature sensors set on the substrate, can output the analog temperature signal detected by each temperature sensor in a time-division manner. This can achieve a greater temperature sensor coverage without increasing the number of cable cores. By setting the multiplexing unit only on the electrode pad, the excessive weight caused by the significant increase in the number of cable cores of traditional electrode pads is avoided, thus maintaining the application effect of the electrode pad. At the same time, the electrode pad outputs an analog temperature signal, eliminating the need to set up an ADC sampling unit on the electrode pad, further avoiding the increase in the overall weight of the electrode pad and improving the application effect of the electrode pad.

[0034] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of a tumor electric field therapy system according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic diagram of the structure of an electrode sheet according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the structure of a first analog multiplexer switch according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the structure of an adapter according to an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the structure of an electrode sheet according to another embodiment of the present invention.

[0040] Figure label:

[0041] 30, 30', Electrode plates; 31, 31', Multiplexing unit; 311, First analog multiplexing switch; 3111, Decoder; 3112, Signal input terminal; 312, Second analog multiplexing switch; 313, Inverter; 33, Electrode plate unit; 331, Through hole; 34, Temperature sensor; 341, Ground terminal; 342, Signal terminal; 35, First cable; 36, 36', Substrate; 40, First connector; 41, First plug; 42, First socket; 50, Adapter; 51, Controller; 52, ADC sampling unit; 53, Voltage divider resistor; 54, I / O control unit; 55, Second cable; 56, Serial communication unit; 60, Second connector; 61, Second plug; 62, Second socket; 70, Electric field generator. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] The tumor electric field therapy system and its electrode pads, as well as the tumor treatment device, according to embodiments of the present invention will be described below with reference to the accompanying drawings.

[0044] In some embodiments, reference Figure 1 As shown, the tumor electric field therapy system includes: at least one pair of electrode pads 30, an adapter 50, and an electric field generator 70, wherein at least one pair of electrode pads 30 are disposed in pairs on the patient's body surface. Figure 1 The device comprises four electrode pads 30, with each pair of electrode pads 30 positioned on the patient's body surface. An adapter 50 is electrically connected to each electrode pad 30, and an electric field generator 70 is electrically connected to the adapter 50. The electric field generator 70 generates an alternating electric signal for tumor electric field therapy and transmits this signal to each electrode pad 30 via the adapter 50, thereby creating an alternating electric field between the paired electrode pads to act on the patient's tumor site for tumor treatment.

[0045] refer to Figure 1 , Figure 2As shown, each electrode 30 includes a backing (not shown), an electrical functional component supported by the backing, and a first cable 35 electrically connected to the electrical functional component. A first connector 40 is provided between each electrode 30 and the adapter 50, and the first connector 40 is adapted to electrically connect the corresponding electrode 30 to the adapter 50. The first connector 40 includes a first plug 41 located at the end of the first cable 35 away from the electrical functional component and a first socket 42 located on the adapter 50. The first plug 41 and the first socket 42 are push-button spring connectors, meaning the first connector 40 connects the adapter 50 and the electrode 30 using a plug-in method.

[0046] like Figure 2 As shown, the electrical functional components include a substrate 36, multiple electrode sheet units 33 disposed on the substrate 36, multiple temperature sensors 34, and a multiplexing unit 31. The multiple electrode sheet units 33 are arranged in an array, and each electrode sheet unit 33 can be applied with an alternating voltage. Each temperature sensor 34 corresponds to one electrode sheet unit 33. That is, the number of temperature sensors 34 is equal to the number of electrode sheet units 33. When the coverage of temperature sensors 34 on the electrode sheet 30 needs to reach 100%, each electrode sheet unit 33 is provided with one temperature sensor 34. Figure 2 As shown, the electrical functional components include nine electrode pad units 33 spaced apart on a substrate 36 and applying an alternating electric field to the patient; nine temperature sensors 34 grouped on the substrate 36; and a multiplexing unit 31 located on the substrate and outputting the analog temperature signals detected by the nine temperature sensors 34 in a time-division manner. The multiplexing unit 31 is connected to each temperature sensor 34. In this embodiment, the tumor electric field therapy system detects the temperature at the corresponding electrode pad unit 33 through the temperature sensors 34, and outputs the analog temperature signals detected by each temperature sensor 34 to the adapter 50 in a time-division manner through the multiplexing unit 31.

[0047] Each electrode unit 33 has a through hole 331, which is suitable for mounting a temperature sensor 34. For example... Figure 2 As shown, each electrode unit 33 has a through-hole 331 in its center, and each temperature sensor 34 is housed in the through-hole 331 of a corresponding electrode unit 33. When the coverage of the temperature sensor 34 reaches 100%, the temperature sensor 34 corresponds one-to-one with the electrode unit 33, that is, each electrode unit 33 has a temperature sensor 34 housed in the through-hole 331 in its center, thereby realizing real-time monitoring of the temperature of each electrode unit 33 and avoiding the situation where the temperature of some electrode units 33 is not monitored, resulting in excessively high temperatures in some areas of the patient's body surface and causing low-temperature burns. Optionally, the electrode unit 33 is a high-dielectric element, such as a ceramic sheet.

[0048] Each temperature sensor 34 has a ground terminal 341 and a signal terminal 342. The ground terminals 341 of multiple temperature sensors 34 are connected to the ground pin GND0, and the signal terminal 342 of each temperature sensor 34 is connected to a signal input terminal 3112 of the multiplexing unit 31. Figure 2 As shown, the grounding terminals 341 of the nine temperature sensors 34 are all connected to the grounding pin GND0, and the signal terminals 342 of the nine temperature sensors 34 are connected in parallel to the nine signal input terminals 3112 of the multiplexing unit 31. The analog temperature signals detected by the nine temperature sensors 34 are output to the adapter 50 via the multiplexing unit 31 in a time-division manner. Optionally, the temperature sensors 34 are thermistors.

[0049] refer to Figure 2 As shown, the multiplexing unit 31 includes a first analog multiplexing switch 311, which includes multiple signal input terminals 3112, a signal output terminal, an enable control terminal, and multiple channel control terminals. In this embodiment, the signal input terminals 3112 of the first analog multiplexing switch 311 are also the signal input terminals 3112 of the multiplexing unit 31, and each signal input terminal 3112 is connected to a temperature sensor 34. A selection channel is also provided between the signal output terminal of the first analog multiplexing switch 311 and each signal input terminal 3112. The first analog multiplexing switch 311 controls the selection channel according to the signals received by the enable control terminal and the multiple channel control terminals. Figure 3 As shown, the first analog multiplexer 311 includes 16 signal input terminals 3112, 1 signal output terminal COMMON, 1 enable control terminal INHIBIT, and 4 channel control terminals A, B, C, and D. Each signal input terminal 3112 has a selection channel between it and the signal output terminal COMMON, for a total of 16 selection channels. The enable control terminal INHIBIT controls whether the 16 selection channels are active. When all 16 selection channels are active, the 4 channel control terminals A, B, C, and D are used to select one selection channel for output, connecting the signal input terminals 3112 and the signal output terminal COMMON at both ends of the selection channel. This allows the analog temperature signal detected by the temperature sensor 34 connected to the signal input terminal 3112 to be output sequentially via the selection channel and the signal output terminal COMMON to the adapter 50. The signals from the 4 channel control terminals A, B, C, and D are combined to form a 4-bit binary channel control signal, resulting in 16 different channel control signals. These 16 different channel control signals control the output of the 16 selection channels in a time-division multiplexing manner.

[0050] like Figure 3As shown, the first analog multiplexer switch 311 also includes a decoder 3111. When the enable control terminal INHIBIT receives a channel selection enable signal, the decoder 3111 controls multiple selection channels to be turned on sequentially according to the channel control signals received by the channel control terminals A, B, C, and D, so as to output the analog temperature signal detected by each temperature sensor 34 to the adapter 50 in a time-division manner. Each selection channel is provided with an analog switch element TG. The control terminal of the analog switch element TG is connected to the decoder 3111. Under the control of the decoder 3111, the analog switch element TG turns on or off the corresponding selection channel.

[0051] The first analog multiplexer 311 also includes a grounding terminal GND1 and a power supply terminal VCC1, through which the first analog multiplexer 311 is powered.

[0052] like Figure 2 As shown, when the multiplexing unit 31 includes only the first analog multiplexing switch 311, the first connection line 35 includes at least one channel control line corresponding to at least one channel control terminal, one enable control line corresponding to one enable control terminal, one channel output line corresponding to one signal output terminal, one DC power supply line corresponding to one power supply terminal VCC1, one grounding line corresponding to one grounding terminal GND1, one grounding line corresponding to one grounding pin GND0, and one alternating signal line AC connected to each electrode unit 33. Figure 3 As shown, when the first analog multiplexer 311 includes four channel control terminals A, B, C, and D, the first connection line 35 may include four channel control lines, one enable control line, one channel output line, one DC power supply line, two ground lines, and one alternating signal line, totaling ten lines. These ten lines enable the transmission of analog temperature signals from up to 16 temperature sensors 34 to the converter 50. The channel output line is also connected to the DC power supply VCC via a voltage divider resistor 53. Figure 4 (As shown), the voltage divider resistor 53 and the temperature sensor 34, such as a thermistor element, form a voltage divider circuit for temperature detection.

[0053] The controller 51 in the adapter 50 controls the I / O control unit 54 ( Figure 4The five I / O ports (shown) output high and low levels. The five I / O ports of the control unit 54 include four I / O ports corresponding to four channel control lines and one I / O port corresponding to an enable control line. The control unit outputs a channel selection enable signal and a channel control signal to the first analog multiplexer 311 through the enable control line and the channel control line to drive the first analog multiplexer 311 to output the analog temperature signal of the temperature sensor 34 in a time-division manner. The signal output terminal of the first analog multiplexer 311 is connected to the ADC sampling unit 52 in the adapter 50 through the channel output line to output the analog temperature signal of the temperature sensor 34 to the ADC sampling unit 52 through the channel output line. The ADC sampling unit 52 converts the analog temperature signal of the temperature sensor 34 into a digital temperature signal and sends it to the controller 51.

[0054] refer to Figure 3 As shown, the specific workflow is as follows:

[0055] When the enable control line is 0 (0 indicates a low level), all selected channels are turned off.

[0056] When the enable control line is 1 (1 represents a high level), if:

[0057] Four channel control lines are set to 0000 (0 represents low level, 1 represents high level, and the high and low levels of the four channel control lines form a four-bit binary number). Decoder 3111 decodes the binary number 0000 to turn on the analog switch element TG on selection channel 1 and turn off the analog switch elements TG on other selection channels, thus ensuring that only selection channel 1 is active out of the 16 selection channels. At this time, the DC power supply VCC, the voltage divider resistor 53, the signal output terminal COMMON of the first analog multiplexer 311, the analog switch element TG on selection channel 1, the temperature sensor 34-1, and the ground pin GND0 form a circuit. The temperature sensor 34-1 operates to sense the temperature of the corresponding electrode unit 33-1. The analog temperature signal sensed by the temperature sensor 34-1 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0058] Similarly, with the four channel control lines set to 0001, decoder 3111 decodes the binary number 0001 to turn on the analog switch element TG on selection channel 2 and turn off the analog switch elements TG on the other selection channels, thus ensuring that only selection channel 2 is active out of the 16 selection channels. At this time, the analog temperature signal sensed by temperature sensor 34-2 is transmitted to the ADC sampling unit 52 of converter 50 through the signal output terminal COMMON and channel output line of the first analog multiplexer 311.

[0059] The four channel control lines are 0010. The decoder 3111 decodes the binary number 0010 to turn on the analog switch element TG on selection channel 3 and turn off the analog switch elements TG on the other selection channels, so that only selection channel 3 is turned on out of the 16 selection channels. At this time, the analog temperature signal sensed by the temperature sensor 34-3 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0060] The four channel control lines are 0011. The decoder 3111 decodes the binary number 0011 to turn on the analog switch element TG on selection channel 4 and turn off the analog switch elements TG on the other selection channels, so that only selection channel 4 is turned on out of the 16 selection channels. At this time, the analog temperature signal sensed by the temperature sensor 34-4 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0061] Four channel control lines are set to 0100. Decoder 3111 decodes the binary number 0100 to turn on the analog switch element TG on selection channel 5 and turn off the analog switch elements TG on the other selection channels, thus ensuring that only selection channel 5 is active out of the 16 selection channels. At this time, the analog temperature signal sensed by temperature sensor 34-5 is transmitted to the ADC sampling unit 52 of converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0062] The four channel control lines are 0101. The decoder 3111 decodes the binary number 0101 to turn on the analog switch element TG on selection channel 6 and turn off the analog switch elements TG on the other selection channels, so that only selection channel 6 is turned on out of the 16 selection channels. At this time, the analog temperature signal sensed by the temperature sensor 34-6 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0063] The four channel control lines are 0110. The decoder 3111 decodes the binary number 0110 to turn on the analog switch element TG on the selected channel 7 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 7 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-7 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0064] The four channel control lines are 0111. The decoder 3111 decodes the binary number 0111 to turn on the analog switch element TG on selection channel 8 and turn off the analog switch elements TG on the other selection channels, so that only selection channel 8 is turned on out of the 16 selection channels. At this time, the analog temperature signal sensed by the temperature sensor 34-8 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0065] Four channel control lines are set to 1000. Decoder 3111 decodes the binary number 1000 to turn on the analog switch element TG on selection channel 9 and turn off the analog switch elements TG on the other selection channels, thus ensuring that only selection channel 9 is active out of the 16 selection channels. At this time, the analog temperature signal sensed by temperature sensor 34-9 is transmitted to the ADC sampling unit 52 of converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0066] The four channel control lines are 1001. The decoder 3111 decodes the binary number 1001 to turn on the analog switch element TG on the selected channel 10 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 10 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-10 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0067] Four channel control lines are set to 1010. Decoder 3111 decodes the binary number 0010 to turn on the analog switch element TG on selection channel 11 and turn off the analog switch elements TG on other selection channels, thus ensuring that only selection channel 11 is active out of the 16 selection channels. At this time, the analog temperature signal sensed by temperature sensor 34-11 is transmitted to the ADC sampling unit 52 of converter 50 through the signal output terminal COMMON and channel output line of the first analog multiplexer 311.

[0068] The four channel control lines are 1011. The decoder 3111 decodes the binary number 1011 to turn on the analog switch element TG on the selected channel 12 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 12 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-12 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0069] Four channel control lines are set to 1100. Decoder 3111 decodes the binary number 1100 to turn on the analog switch element TG on selection channel 13 and turn off the analog switch elements TG on the other selection channels, thus ensuring that only selection channel 13 is active out of the 16 selection channels. At this time, the analog temperature signal sensed by temperature sensors 34-13 is transmitted to the ADC sampling unit 52 of converter 50 through the signal output terminal COMMON and channel output line of the first analog multiplexer 311.

[0070] The four channel control lines are 1101. The decoder 3111 decodes the binary number 1101 to turn on the analog switch element TG on the selected channel 14 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 14 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensors 34-14 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0071] The four channel control lines are 1110. The decoder 3111 decodes the binary number 1110 to turn on the analog switch element TG on the selected channel 15 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 15 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensors 34-15 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0072] The four channel control lines are 1111. The decoder 3111 decodes the binary number 1111 to turn on the analog switch element TG on the selected channel 16 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 16 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensors 34-16 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0073] It should be noted that the number of signal input terminals 3112 of the first analog multiplexer 311 is greater than or equal to the number of temperature sensors 34, such as... Figure 2 and Figure 3As shown, the first analog multiplexer 311 has 16 signal input terminals 3112, and the electrode 30 has 9 temperature sensors 34. The number of signal input terminals 3112 of the first analog multiplexer 311 is greater than or equal to the number of temperature sensors 34, so that the analog temperature signals detected by all temperature sensors 34 can be output in a time-division manner. However, in this example, since there are only 9 temperature sensors 34, the controller 51 located in the adapter 50 controls the I / O control unit 54 to only cycle-switch the selection channels 1 to 9 to be turned on, and there is no need to control the selection channels 10 to 16 to be turned on.

[0074] In this embodiment, the time-division output of analog temperature signals from up to 16 temperature sensors can be achieved through the first cable 35 with 10 cores. This allows for a greater coverage of the temperature sensors 34 without increasing the number of cores in the first cable 35 between the electrode 30 and the adapter 50. Furthermore, since only one analog multiplexer switch 311 is added to the electrode 30, the weight of the electrode 30 is effectively reduced compared to the weight of the additional cores in the traditional first cable 35, ensuring a better fit. Simultaneously, since the electrode 30 outputs analog temperature signals, there is no need to add an ADC sampling unit, further preventing an increase in the overall weight of the electrode 30 and improving its fit. Preferably, the analog multiplexer switch 311 is a small-sized packaged analog multiplexer switch 311 to reduce its weight.

[0075] It should be noted that, referring to Figure 2, in other embodiments, the grounding terminals of multiple temperature sensors 34 are connected to the grounding pin GND0, which can be cascaded with the grounding line GND1 connected to the grounding terminal of the multiplexing unit 31 on a single grounding line. That is, the grounding pin GND0 is connected to the grounding terminal of the first multiplexing switch 311, thereby eliminating the need for one grounding wire connecting the grounding terminal of the multiplexing unit 31 to the first cable 35. This further reduces the number of wire cores in the first cable 35, making it more flexible and thus further reducing the weight of the electrode sheet 30 and improving its adhesion. Similarly, the grounding terminals 341 of multiple temperature sensors 34 can be connected to the grounding line GND1 connected to the grounding terminal of the multiplexing unit 31, thereby eliminating the need for one grounding wire in the first cable 35.

[0076] refer to Figure 4As shown, the adapter 50 includes a main control board electrically connected to at least one pair of first connectors 40. The main control board includes a controller 51, an ADC sampling unit 52 connected between the controller 51 and the first connectors 40, a serial communication unit 56 connected to the controller 51, and I / O control units 54 each connected to a corresponding first connector 40 and controlled by the controller 51. Figure 4 As shown, when there are four electrode plates 30, there are four sampling terminals for each of the first connector 40, I / O control unit 54, and ADC sampling unit 52. The four I / O control units 54 correspond one-to-one with the four first connectors X1, Y1, X2, and Y2, and the four first connectors X1, Y1, X2, and Y2 correspond one-to-one with the four electrode plates 30. The output terminal of each I / O control unit 54 is connected to the enable terminal and channel control terminal of the multiplexing unit 31 through the corresponding first connector 40, such as to the enable control terminal and channel control terminal of the first multiplexing switch 31. Each sampling terminal is connected to the output terminal of the multiplexing unit 31 through the corresponding first connector 40, such as to the signal output terminal of the first multiplexing switch 31.

[0077] The controller 51 outputs control signals from each I / O control unit 54 to the multiplexing unit 31 in the corresponding electrode 30, so that the multiplexing unit 31 in the corresponding electrode 30 outputs the analog temperature signal detected by the corresponding connected temperature sensor 34 in a time-division manner, and performs AD sampling on the analog temperature signal through the ADC sampling unit 52 to obtain the temperature sampling signal, and transmits the temperature sampling signal to the electric field generator 70 through the serial communication unit 56. Figures 2 to 4 As shown, the controller 51 controls four I / O control units 54 to drive the first analog multiplexer switches 311 in the four electrode plates 30 respectively. The ADC sampling unit 52 collects the analog temperature signals detected by the temperature sensors 34 of the corresponding one on the four electrode plates 30 in a time-division manner, and converts the analog temperature signals into digital temperature signals and transmits them to the controller 51. The controller 51 converts the digital temperature signals into temperature values ​​and transmits them to the electric field generator 70 electrically connected to the adapter 50 through the serial communication unit 56. Each sampling terminal of the ADC sampling unit 52 is also connected to the corresponding first connector 40 with a voltage divider resistor 53. This voltage divider resistor is a high-precision resistor, which divides the voltage with the temperature sensor 34 to facilitate the conversion of the analog temperature signal into a digital temperature signal by the ADC sampling unit 52.

[0078] like Figures 2 to 4As shown, the temperature acquisition module of a single electrode 30 consists of nine temperature sensors 34 mounted on it, connected by a first cable 35, a first connector 40, and a voltage divider resistor 53. The positive terminal of the voltage divider resistor 53 is connected to the DC power supply VCC, and the other end is connected to the signal terminal 342 of the temperature sensor 34 and the ADC sampling unit 52. The ground terminal 341 of the temperature sensor 34 is connected to the ground pin GND0.

[0079] The resistance of the thermistor element in the temperature sensor 34 is linearly related to temperature. Changes in temperature synchronously cause changes in the resistance of the thermistor element. Since the DC power supply VCC is a fixed voltage, the resistance of the voltage divider resistor 53 is also unaffected by temperature changes. Therefore, the linear change in the voltage at the sampling terminal of the ADC sampling unit 52 is only related to the resistance of the thermistor element, and is equivalent to the thermistor element and the voltage divider resistor 53 being connected in series to divide the voltage. The relationship between resistance and voltage is VRT = VCC × (RT / (RT+RS)), where VRT is the voltage at the sampling terminal of the ADC sampling unit 52, RT is the resistance of the thermistor element at temperature T (K), and RS is the resistance of the voltage divider resistor 53. When the resistance of the thermistor element changes, the acquired voltage value changes accordingly. This voltage value is an analog quantity, which is converted into a digital temperature signal by the ADC sampling unit 52 and then calculated by the controller 51 to obtain the current temperature value.

[0080] The relationship between temperature and resistance is RT = RN × e B(1 / T -1 / TN), where RT is the resistance of the thermistor at temperature T (K), RN is the resistance of the thermistor at the rated temperature TN (K), T is the current temperature (K), B is the thermistor coefficient, and e is a constant (2.71828). For example, when the DC power supply VCC is 3.3V, the thermistor coefficient B is 3380, and the resistance RN at 25℃ is 10K, with a collected voltage VRT of 1.5022V, the calculated resistance RT of the thermistor is approximately 8355.88Ω, and the current temperature T is 29.8℃. This system uses a 12-bit analog-to-digital converter chip. Under a 3.3V supply voltage, the minimum measurable voltage is approximately 0.8056mV, corresponding to a minimum temperature resolution of approximately 0.03℃, providing high accuracy in temperature measurement.

[0081] Similarly, the nine thermistor elements of each electrode sheet 30 transmit the analog temperature signal sensed by the thermistor element in parallel to the corresponding sampling channel of the ADC sampling unit 52 through the first analog multiplexer 311 located on it in a time-division manner. Then, the controller 51 controls the serial communication unit 56 to transmit the signal serially to the electric field generator 70 electrically connected to the adapter 50.

[0082] refer to Figure 1 As shown, the adapter 50 also includes a second cable 55 electrically connected to the electric field generator 70. When the electrode plates 30 include four, as... Figure 4 As shown, the second cable 55 includes 8 conductive cores, of which 4 conductive cores are alternating signal lines X1_AC, Y1_AC, X2_AC and Y2_AC respectively connected to the 4 first connectors X1, Y1, X2 and Y2, 2 conductive cores are receive data line RX and transmit data line TX electrically connected to the serial communication unit 56 of the controller 51, and the remaining 2 conductive cores are power supply line VCC and ground line GND that provide operating power to at least one temperature sensor 34 of each electrode plate 30 and the main control board of the adapter 50.

[0083] refer to Figure 1 As shown, a second connector 60 is provided between the adapter 50 and the electric field generator 70. The second connector 60 is adapted to electrically connect the electric field generator 70 to the adapter 50. The second connector 60 includes a second plug 61 located at the end of the second cable 55 away from the controller 51 and a second socket 62 located on the electric field generator 70. The second plug 61 and the second socket 62 are push-button spring connectors, that is, the second connector 60 connects the adapter 50 and the electric field generator 70 using a plug-in method. (Reference) Figure 4 As shown, each of the first connectors, such as X1, Y1, X2, and Y2, is connected to the second connector 60 via alternating signal lines such as X1_AC, Y1_AC, X2_AC, and Y2_AC. The second connector 60 is connected to the serial communication unit 56 via a receive data line RX and a transmit data line TX. The VCC pin of the second connector 60 is connected to the power supply terminal of the controller 51, and the GND pin of the second connector 60 is grounded. The VCC pin of the second connector 60 is also connected to the corresponding sampling terminal of the ADC sampling unit 52 via a voltage divider resistor 53.

[0084] The controller 51 controls the serial communication unit 56 to transmit the digital temperature signal obtained by the ADC sampling unit 52 to the electric field generator 70 via the second connector 60. That is, the analog temperature signal (corresponding to the voltage value of the temperature sensor 34) collected by the adapter 50 is converted into a digital temperature signal by the ADC sampling unit 52 and then transmitted to the electric field generator 70 via the serial communication unit 56, the transmit data line TX connected to the serial communication unit 56, and the second connector 60.

[0085] In the above embodiments, by setting a multiplexing unit 31 on the substrate 36 of the electrode sheet 30 and connecting it to multiple temperature sensors 34 set on the substrate 36, the analog temperature signal detected by each temperature sensor 34 is output in a time-division manner. This achieves a greater coverage of the temperature sensors 34 without increasing the number of cores in the first cable 35. In addition, with a large number of temperature sensors 34 on the electrode sheet 30, the weight of the first cable 35 is greatly reduced, while the electrode sheet 30 only increases in weight with the multiplexing unit 31. This avoids excessive load on the electrode sheet 30 and maintains the adhesion effect of the electrode sheet 30. At the same time, the electrode sheet 30 outputs an analog temperature signal, and no ADC sampling unit 52 or similar is set on the electrode sheet 30, further avoiding an increase in the overall weight of the electrode sheet 30 and improving the adhesion effect of the electrode sheet 30.

[0086] refer to Figure 5 The diagram shown is a structural schematic of an electrode sheet 30' according to another embodiment of the present invention. In this embodiment, the substrate 36' of the electrode sheet 30' has more electrode sheet units 33 and temperature sensors 34 than the aforementioned electrode sheet 30. It also has a first analog multiplexer switch 311 connected to the signal terminals (unlabeled) of the multiple temperature sensors 34. The electrode sheet units 33, temperature sensors 34, and first analog multiplexer switch 311 of the electrode sheet 30' in this embodiment are the same as those in the aforementioned embodiment, so the previous labels are retained. Compared with the electrode sheet 30 in the previous embodiment, the multiplexing unit 31' of the electrode sheet 30' in this embodiment further includes a second analog multiplexing switch 312 and an inverter 313. The enable control terminal of the second analog multiplexing switch 312 is connected to the output terminal of the inverter 313, the input terminal of the inverter 313 is connected to the enable control terminal of the first analog multiplexing switch 311, each channel control terminal of the second analog multiplexing switch 312 is correspondingly connected to each channel control terminal of the first analog multiplexing switch 311, and the signal output terminal of the second analog multiplexing switch 312 is connected to the signal output terminal of the first analog multiplexing switch 311. In other words, the first analog multiplexer 311 and the second analog multiplexer 312 share the enable control line, the channel control line, and the channel output line. However, when sharing the enable control line, an inverter 313 is added in the middle, so that no matter whether the level of the enable control line is high or low, only one analog multiplexer is effective at the same time. In addition, the first analog multiplexer 311 and the second analog multiplexer 312 also share the DC power supply line, the ground line, and the alternating signal line, so that the transmission of analog temperature signals from more temperature sensors 34 can be achieved without adding any wire cores.

[0087] like Figure 5As shown, 20 electrode units 33 are disposed on the substrate 36' of the electrode unit 30', and each electrode unit 33 is correspondingly provided with a temperature sensor 34. If the number of signal input terminals 3112 of the first analog multiplexer 311 is 16, then obviously the number of temperature sensors 34 exceeds the number of signal input terminals 3112 of the first analog multiplexer 311. In this case, a second analog multiplexer 312 needs to be added to increase the number of signal input terminals 3112, that is, to increase the number of selection channels, so as to realize the transmission of analog temperature signals from the 20 temperature sensors 34. Optionally, the structures of the first analog multiplexer 311 and the second analog multiplexer 312 can both be Figure 3 The structure shown has four channel control terminals A, B, C and D, and 16 signal input terminals 3112, which can transmit analog temperature signals from more than 16 temperature sensors 34 through two analog multiplex switches.

[0088] like Figure 5 As shown, when the enable control line is 1 (1 indicates a high level), the enable control terminal INHIBIT of the first analog multiplexer 311 is active. If:

[0089] With the channel control line set to 0000, the decoder 3111 of the first analog multiplexer 311 decodes the binary number 0000, enabling the analog switch element TG on channel 1 to conduct and the analog switch elements TG on the other channels to turn off, thus ensuring that only channel 1 is active out of the 16 channels. At this time, the analog temperature signal sensed by the temperature sensor 34-1 is transmitted to the ADC sampling unit 52 of the converter 50 via the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0090] With the channel control line set to 0001, the decoder 3111 of the first analog multiplexer 311 decodes the binary number 0001, enabling the analog switch element TG on channel 2 to conduct and deactivating the analog switch elements TG on other channels, thus ensuring that only channel 2 is active out of the 16 channels. At this time, the analog temperature signal sensed by the temperature sensor 34-2 is transmitted to the ADC sampling unit 52 of the converter 50 via the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0091] With the channel control line set to 0010, the decoder 3111 of the first analog multiplexer 311 decodes the binary number 0010, enabling the analog switch element TG on channel 3 to conduct and the analog switch elements TG on other channels to turn off, thus ensuring that only channel 3 is active out of the 16 channels. At this time, the analog temperature signal sensed by the temperature sensor 34-3 is transmitted to the ADC sampling unit 52 of the converter 50 via the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0092] The channel control line is 0011. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 0011 to turn on the analog switch element TG on the selected channel 4 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 4 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-4 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0093] With the channel control line set to 0100, the decoder 3111 of the first analog multiplexer 311 decodes the binary number 0100, enabling the analog switch element TG on channel 5 to conduct and turning off the analog switch elements TG on other channels, thus ensuring that only channel 5 is active out of the 16 channels. At this time, the analog temperature signal sensed by the temperature sensor 34-5 is transmitted to the ADC sampling unit 52 of the converter 50 via the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0094] The channel control line is 0101. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 0101 to turn on the analog switch element TG on the selected channel 6 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 6 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-6 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0095] The channel control line is 0110. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 0110 to turn on the analog switch element TG on the selected channel 7 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 7 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-7 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0096] The channel control line is 0111. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 0111 to turn on the analog switch element TG on the selected channel 8 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 8 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-8 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0097] With the channel control line set to 1000, the decoder 3111 of the first analog multiplexer 311 decodes the binary number 1000, enabling the analog switch element TG on channel 9 to conduct and deactivating the analog switch elements TG on other channels, thus ensuring that only channel 9 is active out of the 16 channels. At this time, the analog temperature signal sensed by the temperature sensors 34-9 is transmitted to the ADC sampling unit 52 of the converter 50 via the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0098] The channel control line is 1001. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 1001 to turn on the analog switch element TG on the selected channel 10 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 10 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-10 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0099] The channel control line is 1010. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 0010 to turn on the analog switch element TG on the selected channel 11 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 11 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-11 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0100] The channel control line is 1011. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 1011 to turn on the analog switch element TG on the selected channel 12 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 12 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-12 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0101] The channel control line is 1100. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 1100 to turn on the analog switch element TG on the selected channel 13 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 13 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-13 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0102] The channel control line is 1101. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 1101 to turn on the analog switch element TG on the selected channel 14 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 14 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensors 34-14 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0103] The channel control line is 1110. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 1110 to turn on the analog switch element TG on the selected channel 15 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 15 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensors 34-15 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0104] The channel control line is 1111. The decoder 3111 of the first analog multiplexer 311 decodes the binary number 1111 to turn on the analog switch element TG on the selected channel 16 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 16 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensors 34-16 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal COMMON of the first analog multiplexer 311 and the channel output line.

[0105] When the enable control line is 0 (0 represents a low level), after being inverted by inverter 313, the enable control terminal of the second analog multiplexer 312 becomes valid. If:

[0106] With the channel control line set to 0000, the decoder of the second analog multiplexer 312 decodes the binary number 0000, enabling the analog switch element TG on channel 1 to conduct and the analog switch elements TG on the other channels to turn off, thus ensuring that only channel 1 is active out of the 16 channels. At this time, the analog temperature signal sensed by the temperature sensors 34-17 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal of the second analog multiplexer 312 and the channel output line.

[0107] The channel control line is 0001. The decoder of the second analog multiplexer 312 decodes the binary number 0001 to turn on the analog switch element TG on channel 2 and turn off the analog switch elements TG on the other channels, so that only channel 2 is turned on out of the 16 channels. At this time, the analog temperature signal sensed by the temperature sensors 34-18 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal of the second analog multiplexer 312 and the channel control output.

[0108] The channel control line is 0010. The decoder of the second analog multiplexer 312 decodes the binary number 0010 to turn on the analog switch element TG on the selected channel 3 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 3 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-19 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal of the second analog multiplexer 312 and the channel output line.

[0109] The channel control line is 0011. The decoder of the second analog multiplexer 312 decodes the binary number 0011 to turn on the analog switch element TG on the selected channel 4 and turn off the analog switch elements TG on the other selected channels, so that only the selected channel 4 is turned on out of the 16 selected channels. At this time, the analog temperature signal sensed by the temperature sensor 34-20 is transmitted to the ADC sampling unit 52 of the converter 50 through the signal output terminal of the second analog multiplexer 312 and the channel output line.

[0110] It should be noted that when the tumor electric field therapy system includes Figure 5 When the electrode plate 30' is shown, the corresponding adapter 50 and electric field generator 70, etc., are the same as those using... Figure 2 The electrode plate 30 shown corresponds to the same adapter 50 and electric field generator 70, the difference being that the controller 51 in the adapter 50 controls the I / O control unit 54 to cyclically switch between different selection channels, such as... Figure 2 As shown, the I / O control unit 54 only cycles through the selection channels 1-9, without needing to control the selection channels 10-16 to be active. Figure 5 As shown, the I / O control unit 54 needs to cycle through the selection channels 1 to 20 to ensure they are active.

[0111] In the above embodiments, by providing a multiplexing unit 31' on the substrate 36' of the electrode sheet 30' and connecting it to a plurality of temperature sensors 34' provided on the substrate 36', the analog temperature signal detected by each temperature sensor 34' is output in a time-division manner, thereby achieving a greater coverage of temperature sensors 34 without increasing the number of wire cores in the first cable 35.

[0112] The present invention provides a tumor treatment device, comprising: the aforementioned electrode pads 30, 30', or the aforementioned tumor electric field therapy system.

[0113] According to the tumor treatment device of the present invention, the aforementioned electrode pads 30, 30' or tumor electric field treatment system can achieve a greater coverage of temperature sensor 34 without increasing the number of wire cores in the first cable 35. Furthermore, since only a multiplexing unit 31 is added to the electrode pads 30, 30', the weight of the electrode pads 30, 30' can be effectively reduced compared to the weight of the additional wire cores in the first cable 35 of the traditional electrode pads, thus avoiding excessive load on the electrode pads 30, 30' and maintaining the adhesion effect of the electrode pads.

[0114] It should be noted that the logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.

[0115] It should be understood that various parts of the present invention can be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, multiple steps or methods can be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.

[0116] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0117] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0118] Furthermore, the terms "first," "second," etc., used in the embodiments of this invention are for descriptive purposes only and should not be construed as indicating or implying relative importance, or implicitly specifying the number of technical features indicated in this embodiment. Therefore, features defined with terms such as "first" and "second" in the embodiments of this invention can explicitly or implicitly indicate that the embodiment includes at least one of those features. In the description of this invention, the word "multiple" means at least two or more, such as two, three, four, etc., unless otherwise explicitly specified in the embodiments.

[0119] In this invention, unless otherwise explicitly specified or limited in the embodiments, the terms "installation," "connection," "joining," and "fixing" appearing in the embodiments should be interpreted broadly. For example, a connection can be a fixed connection, a detachable connection, or an integral part; it can also be a mechanical connection, an electrical connection, etc. Of course, it can also be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components, or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific implementation.

[0120] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0121] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tumor electric field therapy system, characterized in that, include: At least one pair of electrode sheets, each of the electrode sheets including a substrate; a plurality of electrode sheet units, a plurality of temperature sensors and a multiplexing unit disposed on the substrate, each of the electrode sheet units being able to be applied with an alternating voltage, each of the temperature sensors being disposed corresponding to one electrode sheet unit to detect the temperature at the corresponding electrode sheet unit, the multiplexing unit being connected to each of the temperature sensors, and the multiplexing unit being configured to output the analog temperature signal detected by each of the temperature sensors in a time-division manner; An adapter and an electric field generator, wherein the electric field generator is used to generate an alternating electrical signal and transmit the alternating electrical signal to each of the electrode plates through the adapter; The adapter includes a controller and an ADC sampling unit. The ADC sampling unit has multiple sampling terminals, and each sampling terminal is connected to the output terminal of a corresponding multiplexing unit. The controller is connected to the ADC sampling unit. The controller sends a control signal through the output channel to the multiplexing unit in the corresponding electrode plate, so that the multiplexing unit in the corresponding electrode plate outputs the analog temperature signal detected by the corresponding connected temperature sensor in a time-division manner, and performs AD sampling on the analog temperature signal through the ADC sampling unit to obtain a temperature sampling signal, and transmits the temperature sampling signal to the electric field generator.

2. The tumor electric field therapy system according to claim 1, characterized in that, Each of the temperature sensors includes a ground terminal and a signal terminal. The multiplexing unit has multiple signal input terminals. The ground terminals of the multiple temperature sensors are connected to a common ground pin, and the signal terminal of each temperature sensor is connected to a signal input terminal of the multiplexing unit.

3. The tumor electric field therapy system according to claim 2, characterized in that, The multiplexing unit has a grounding terminal connected to the grounding pin.

4. The tumor electric field therapy system according to claim 2, characterized in that, The number of signal input terminals of the multiplexing unit is greater than or equal to the number of temperature sensors.

5. The tumor electric field therapy system according to claim 2, characterized in that, The multiplexing unit includes a first analog multiplexing switch, which includes a signal output terminal, an enable control terminal, and at least one channel control terminal. A selection channel is provided between the signal output terminal and each signal input terminal of the multiplexing unit. The first analog multiplexing switch is configured to control the selection channel according to the signals received by the enable control terminal and the at least one channel control terminal.

6. The tumor electric field therapy system according to claim 5, characterized in that, The first analog multiplexer also includes a decoder, which is configured to: when the enable control terminal receives a channel selection enable signal, control multiple selected channels to be turned on sequentially according to the channel control signal received by the channel control terminal, and output the analog temperature signal detected by each temperature sensor in a time-division manner.

7. The tumor electric field therapy system according to claim 6, characterized in that, Each of the selection channels is provided with an analog switch element, the control terminal of which is connected to the decoder. Under the control of the decoder, the analog switch element turns the corresponding selection channel on or off.

8. The tumor electric field therapy system according to claim 5, characterized in that, The multiplexing unit further includes a second analog multiplexing switch and an inverter. The inverter has an input terminal and an output terminal. The input terminal of the inverter is connected to the enable control terminal of the first analog multiplexing switch. The second analog multiplexing switch has an enable control terminal connected to the output terminal of the inverter, multiple channel control terminals corresponding to each channel control terminal of the first analog multiplexing switch, and a signal output terminal connected to the signal output terminal of the first analog multiplexing switch.

9. The tumor electric field therapy system according to claim 8, characterized in that, Both the first analog multiplexer and the second analog multiplexer have four channel control terminals.

10. The tumor electric field therapy system according to claim 9, characterized in that, Both the first analog multiplexer and the second analog multiplexer have 16 signal input terminals.

11. The tumor electric field therapy system according to claim 9, characterized in that, Each channel control terminal is provided with one channel control line. The enable control terminal of the first analog multiplexer is provided with one enable control line. The signal output terminal of the second analog multiplexer shares one channel output line with the signal output terminal of the first analog multiplexer. The grounding terminal of the multiplexing unit is provided with one grounding line. The power supply terminal of the multiplexing unit is provided with one DC power supply line. The grounding pin is provided with one grounding line. The multiple electrode units are provided with one alternating signal line.

12. The tumor electric field therapy system according to claim 11, characterized in that, The temperature sensor is a thermistor.

13. The tumor electric field therapy system according to claim 12, characterized in that, The channel output line is connected to a DC power supply via a voltage divider resistor.

14. The tumor electric field therapy system according to any one of claims 1-13, characterized in that, The electrode sheet unit is a dielectric element.

15. The tumor electric field therapy system according to claim 14, characterized in that, The dielectric element is a ceramic sheet.

16. The tumor electric field therapy system according to any one of claims 1-13, characterized in that, Each of the electrode units has a perforation, and the temperature sensor is disposed within the perforation.

17. The tumor electric field therapy system according to any one of claims 1-13, characterized in that, The multiple electrode units are arranged in an array.

18. The tumor electric field therapy system according to any one of claims 1-13, characterized in that, Also includes: At least one pair of first connectors, each of the first connectors being adapted to connect a corresponding electrode plate to the adapter; A second connector is adapted to connect the electric field generator to the adapter.

19. The tumor electric field therapy system according to claim 18, characterized in that, The first connector is configured to connect the adapter to the electrode plate in a plug-in manner, and the second connector is configured to connect the adapter to the electric field generator in a plug-in manner.

20. The tumor electric field therapy system according to claim 18, characterized in that, The adapter also includes a serial communication unit and at least two I / O control units. The controller is connected to the serial communication unit and each of the I / O control units respectively. The controller outputs channel control signals to the multiplexing unit in the corresponding electrode plate through each of the I / O control units, and transmits the temperature sampling signal to the electric field generator through the serial communication unit.

21. The tumor electric field therapy system according to claim 20, characterized in that, Each of the first connectors is connected to the second connector via an alternating signal line. The second connector is connected to the serial communication unit via a receive data line and a transmit data line. The VCC pin of the second connector is connected to the power supply terminal of the controller, and the GND pin of the second connector is grounded. Each sampling terminal of the ADC sampling unit is connected to the output terminal of the multiplexing unit via a corresponding first connector. The output terminal of each I / O control unit is connected to the enable terminal and channel control terminal of the multiplexing unit via the first connector.

22. The tumor electric field therapy system according to claim 21, characterized in that, The VCC pin of the second connector is also connected to the corresponding sampling terminal of the ADC sampling unit through a corresponding voltage divider resistor.

23. The tumor electric field therapy system according to any one of claims 1-13, characterized in that, There are four electrode plates.

24. A tumor treatment device, characterized in that, include: The tumor electric field therapy system according to any one of claims 1-23.

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