Sensing harness and sensing system

Abstract

To acquire measurement results with simple configuration at multiple points.SOLUTION: A sensing harness comprises a cable and multiple mounting parts on which sensor units are mounted on the cable. The cable includes a power line that supplies an electric power to at least one of the mounting part and the sensor unit mounted on the mounting part.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a sensing harness and a sensing system. [Background technology]

[0002] In recent years, there has been a demand for sensing technology that can digitize information at multiple locations using multiple sensors.

[0003] For example, Patent Document 1 (JP Patent Publication No. 2011-106215) discloses the following condition monitoring device. That is, the condition monitoring device includes a plurality of signal lines laid vertically and horizontally to form a mesh parallel to a surface forming an indoor space, a plurality of sensors disposed at equal intervals on each of the signal lines and between the intersections of the vertical and horizontal signal lines, each measuring a predetermined physical quantity of a monitoring target and transmitting the measured quantity together with predetermined identification information unique to each sensor, and a display means for receiving the measurement results of each of the sensors, specifying the position of the sensor on the surface from the identification information of the sensor that transmitted the measurement result, and displaying the measurement result together with the position information.

[0004] Also, Patent Document 2 (JP Patent Publication 7-280695A) discloses the following oil leakage detection method. That is, in the oil leakage detection method, an oil leakage detection optical fiber selected from the following (1) to (3) is housed in or between each coating layer on the outer periphery of an oil-impregnated insulating layer of a power cable, an optical pulse is sent to the optical fiber, the frequency shift between the optical pulse and the Brillouin scattered light is measured, and the leakage of insulating oil is detected from the strain distribution of the optical fiber. (1) An oil leakage detection optical fiber in which an optical fiber and an oil-absorbing expansion material are built in a protective tube having a liquid penetration part, and at least the inner surface of the protective tube is configured with continuous unevenness. (2) An oil leakage detection optical fiber in which an optical fiber, an oil-absorbing expansion material, and a long body having continuous unevenness are built in a protective tube having a plurality of liquid penetration parts. (3) An optical fiber for oil leak detection having an optical fiber and an oil-absorbing expansion material built into a protective tube having multiple liquid penetration parts, the optical fiber for oil leak detection having recesses extending around the entire circumference of the protective tube at multiple locations, and the radius of curvature r of each of these recesses being constant. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] JP 2011-106215 A [Patent Document 2] Japanese Patent Application Publication No. 7-280695 Summary of the Invention [Problem to be solved by the invention]

[0006] The technology described in Patent Document 1 requires a large number of sensors to be arranged two-dimensionally, making the configuration complicated.The technology described in Patent Document 2 requires the use of optical fibers to detect oil leaks, making the configuration complicated and expensive.

[0007] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide a sensing harness and sensing system that are capable of obtaining measurement results at multiple points with a simple configuration. [Means for solving the problem]

[0008] The sensing harness of the present disclosure comprises a cable and a plurality of mounting portions provided on the cable to which sensor units can be attached, and the cable includes a power line for supplying power to the mounting portions and / or to the sensor units attached to the mounting portions. Effect of the Invention

[0009] According to the present disclosure, it is possible to obtain measurement results at multiple points with a simple configuration. [Brief description of the drawings]

[0010] [Figure 1] FIG. 1 is a diagram illustrating a configuration of a sensing system according to a first embodiment of the present disclosure. [Diagram 2] FIG. 2 is a diagram illustrating a detailed configuration of the sensing system according to the first embodiment of the present disclosure. [Diagram 3] FIG. 3 is a diagram illustrating a configuration of a sensing system according to a first modification of the first embodiment of the present disclosure. [Figure 4] FIG. 4 is a diagram illustrating a configuration of a sensing system according to a first modification of the first embodiment of the present disclosure. [Diagram 5] FIG. 5 is a diagram illustrating a detailed configuration of a sensing system according to the second modification of the first embodiment of the present disclosure. [Figure 6] FIG. 6 is a diagram illustrating a detailed configuration of a sensing system according to the second embodiment of the present disclosure. [Figure 7] FIG. 7 is a diagram illustrating a detailed configuration of a sensing system according to the third embodiment of the present disclosure. [Figure 8] FIG. 8 is a diagram illustrating a detailed configuration of a sensing system according to the fourth embodiment of the present disclosure. [Figure 9] FIG. 9 is a diagram illustrating a detailed configuration of a sensing system according to the fifth embodiment of the present disclosure. [Figure 10] FIG. 10 is a diagram illustrating a detailed configuration of a sensing system according to the sixth embodiment of the present disclosure. As shown in FIG. [Figure 11] FIG. 11 is a diagram illustrating a detailed configuration of a sensing system according to the seventh embodiment of the present disclosure. As shown in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] First, the contents of the embodiments of the present disclosure will be listed and described.

[0012] (1) A sensing harness according to an embodiment of the present disclosure comprises a cable and a plurality of mounting portions provided on the cable to which sensor units can be attached, and the cable includes a power line for supplying power to the mounting portions and / or the sensor units attached to the mounting portions.

[0013] In this way, by using a cable including a power line and a configuration including multiple mounting parts to which the sensor units can be attached, it is possible to perform measurements using the multiple sensor units while supplying power to the multiple sensor units that are attached to multiple mounting parts selected according to the measurement position, so that, compared to using a battery-powered sensor unit, for example, measurements can be continuously performed using the multiple sensor units without the need for battery replacement. Therefore, measurement results at multiple points can be obtained with a simple configuration.

[0014] (2) In the above (1), the cable may further include a communication line for transmitting measurement information including a measurement result by the sensor unit and an identifier of the sensor unit.

[0015] With such a configuration, for example, it is possible to collect the measurement results from a plurality of sensor units with a simple configuration without providing a wireless communication circuit for transmitting measurement information for each sensor unit.

[0016] The cable may further include a signal line for transmitting a signal indicative of a measurement result by the sensor unit.

[0017] With such a configuration, it is possible to collect the measurement results of a plurality of sensor units with a simple configuration, without disposing an ADC (Analog to Digital Converter) or the like for detecting the sensing results of the sensor elements for each sensor unit.

[0018] (4) In the above (3), the multiple mounting portions may include band-limiting circuits having different passbands, and the signal line may transmit a signal that has passed through the band-limiting circuit and indicates a measurement result by the sensor unit.

[0019] With this configuration, the measurement results from multiple sensor units respectively attached to multiple mounting portions can be obtained via a common signal line, and the sensor unit that output the measurement results can be identified based on the frequency of the signal transmitted by the signal line.

[0020] (5) In the above (3), the cable may further include a control line that transmits a control signal for controlling output of a signal from the sensor unit to the signal line.

[0021] With this configuration, the measurement results from the multiple sensor units can be selectively acquired via, for example, a common signal line.

[0022] (6) In the above (1), the multiple mounting parts may receive a designation signal via the cable that designates one of the multiple mounting parts, and the mounting part designated by the designation signal among the multiple mounting parts may transmit the measurement results by the sensor unit via the cable.

[0023] With this configuration, the measurement results from the multiple sensor units can be selectively acquired via a common cable.

[0024] (7) In any one of the above (1) to (6), the attachment portion may be detachably provided on the cable.

[0025] With this configuration, the sensor unit can be attached at any position along the cable installation location.

[0026] (8) In any one of (1) to (7) above, the sensor unit may include a sensor element, and the attachment portion may include a processing portion that acquires a measurement result of the sensor element.

[0027] With this configuration, a sensor unit having a simple configuration that does not include a processing section can be attached to the attachment section, and measurement can be performed using the sensor unit.

[0028] (9) A sensing system according to an embodiment of the present disclosure includes a sensing harness including a cable and a plurality of mounting portions provided on the cable, a sensor unit attached to the mounting portions, and a processing device that acquires measurement results by the sensor unit, and the cable includes a power line for supplying power to at least one of the mounting portions and the sensor unit.

[0029] In this way, by using a cable including a power line and a configuration including multiple mounting parts to which the sensor units can be attached, it is possible to perform measurements using the multiple sensor units while supplying power to the multiple sensor units that are attached to multiple mounting parts selected according to the measurement position, so that, compared to using a battery-powered sensor unit, for example, measurements can be continuously performed using the multiple sensor units without the need for battery replacement. Therefore, measurement results at multiple points can be obtained with a simple configuration.

[0030] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals, and the description thereof will not be repeated. In addition, at least some of the embodiments described below may be arbitrarily combined.

[0031] <First embodiment> 1 is a diagram showing a configuration of a sensing system according to a first embodiment of the present disclosure. Referring to Fig. 1, a sensing system 401 includes a sensing harness 101, sensor units 201A, 201B, and 201C that are sensor units 201, and a processing device 301.

[0032] For example, the sensing system 401 is installed in a house. In this case, the sensing harness 101 is installed in the ceiling and the attic of the house. The sensing system 401 may be installed in a building or a factory.

[0033] The sensing harness 101 includes a cable 11 and mounting portions 51A, 51B, and 51C that are mounting portions 51. The sensing harness 101 may include two or four or more mounting portions 51. For example, the sensing harness 101 is included in a unit cable for indoor wiring in a house.

[0034] The attachment portion 51 is provided on the cable 11. For example, the attachment portion 51 is fixedly provided on the cable 11. More specifically, the cable 11 has a plurality of branch portions. The attachment portion 51 is fixedly provided on the end portion of the cable 11 at the branch portion.

[0035] Sensor unit 201 can be attached to mounting portion 51. In the example shown in Fig. 1, sensor units 201A, 201B, and 201C are attached to mounting portions 51A, 51B, and 51C, respectively. Mounting portions 51 are provided along the longitudinal direction of cable 11 at intervals of, for example, 1 meter to 10 meters.

[0036] For example, the minimum bending radius of cable 11 is 10 millimeters or less. That is, cable 11 can be bent with a radius of curvature of 10 millimeters or less. Furthermore, for example, cable 11 is fixed to a structure by a fixing part FP (not shown). In this case, the combined bending EI of cable 11 satisfies the following formula (1).

number

[0037] Here, L is the distance between two adjacent fixed parts FP. M is the total weight of the mounting part 51 and the sensor unit 201 between the two fixed parts FP. g is the gravitational acceleration. νmax is the allowable deflection of the cable 11. "a^b" means a to the power of b.

[0038] Fig. 2 is a diagram showing a detailed configuration of a sensing system according to a first embodiment of the present disclosure. Referring to Fig. 2, a cable 11 includes a power line 1, a ground line 2, and a sheath 3 covering the power line 1 and the ground line 2. The power line 1 and the ground line 2 are lines for supplying power from a power source (not shown) to a sensor unit 201. Ends of the power line 1 and the ground line 2 are connected to, for example, a distribution board in a house. Each of the power line 1 and the ground line 2 has a plurality of branch lines corresponding to a plurality of branch portions in the cable 11.

[0039] The sensor unit 201 is connected to the branch lines of the power supply line 1 and the ground line 2 via the attachment portion 51. The sensor unit 201 includes a sensor element 21, an AD (Analog to Digital) conversion unit 22, and a transmission unit 23. The AD conversion unit 22 is an example of a processing unit. Some or all of the units in the sensor unit 201 operate with power supplied using the power supply line 1 and the ground line 2.

[0040] The sensor element 21 outputs an analog signal at a level corresponding to the physical quantity PH of the measurement target to the AD conversion unit 22. The physical quantity PH may be, for example, temperature, humidity, vibration, the amount of condensation, or the concentration of a predetermined gas.

[0041] The AD conversion unit 22 acquires the measurement result of the sensor element 21. More specifically, the AD conversion unit 22 generates a measurement signal, which is a digital signal indicating the measurement result of the sensor element 21, by sampling the analog signal received from the sensor element 21 at a predetermined sampling period, and outputs the generated measurement signal to the transmission unit 23.

[0042] The transmitting unit 23 periodically or irregularly generates measurement information including the measurement signal received from the AD conversion unit 22 and an identifier, i.e., ID, of the sensor unit 201, and transmits the generated measurement information in a wireless signal to the processing device 301.

[0043] The processing device 301 includes a communication unit 31, a processing unit 32, and a storage unit 33. The communication unit 31 and the processing unit 32 are partly or entirely realized by a processing circuit including one or more processors. The storage unit 33 is, for example, a non-volatile memory included in the processing circuit.

[0044] The processing device 301 acquires the measurement results by the sensor unit 201. More specifically, the communication unit 31 receives a wireless signal from the sensor unit 201 and acquires measurement information from the received wireless signal. The communication unit 31 stores the acquired measurement information in the storage unit 33.

[0045] For example, the storage unit 33 stores correspondence information C1 indicating a correspondence relationship between the ID of the sensor unit 201 and the installation position of the sensor unit 201. Furthermore, for example, the storage unit 33 stores correspondence information D1 indicating a correspondence relationship between the voltage of the measurement signal and the physical quantity PH. The correspondence information C1 and D1 are saved in advance in the storage unit 33 by the user of the sensing system 401.

[0046] The processing unit 32 acquires the physical quantity PH at the installation position of each sensor unit 201 based on the ID and the measurement signal included in the measurement information in the storage unit 33 and the correspondence information C1, D1. For example, the processing unit 32 detects an abnormality in the house based on the acquired physical quantity PH and notifies the user of the detection result.

[0047] (Variation 1) 3 and 4 are diagrams illustrating a configuration of a sensing system according to Modification 1 of the first embodiment of the present disclosure. Fig. 3 illustrates the sensing system 401M1 before the attachment portion 51M1 is attached to the cable 11M1. Fig. 4 illustrates the sensing system 401M1 after the attachment portion 51M1 is attached to the cable 11M1.

[0048] 3 and 4, compared to the sensing system 401, the sensing system 401M1 includes a sensing harness 101M1 instead of the sensing harness 101. Compared to the sensing harness 101, the sensing harness 101M1 includes a cable 11M1 instead of the cable 11, and includes mounting portions 51M1A, 51M1B, and 51M1C that are mounting portion 51M1 instead of mounting portion 51.

[0049] The cable 11M1 does not have a branch portion, unlike the cable 11. The cable 11M1 is a cable to which the attachment portion 51M1 can be attached by tapping, for example, like a 10BASE-5 cable conforming to IEEE (Institute of Electrical and Electronics Engineers) 802.3. For example, a surface of the sheath 3 of the cable 11M1 is provided with a plurality of marks MR indicating positions where the attachment portion 51M1 can be provided.

[0050] Compared to the mounting portion 51, the mounting portion 51M1 includes needle-shaped insertion portions 41 and 42. The mounting portion 51M1 is detachably provided on the cable 11M1. More specifically, by inserting the insertion portions 41 and 42 of the mounting portion 51M1 into positions on the surface of the sheath 3 where the mark MR is provided, the insertion portion 41 comes into contact with the power line 1, the insertion portion 42 comes into contact with the ground line 2, and the mounting portion 51M1 is attached to the cable 11M1.

[0051] (Variation 2) Fig. 5 is a diagram showing a detailed configuration of a sensing system according to Modification 2 of the first embodiment of the present disclosure. With reference to Fig. 5, compared to sensing system 401, sensing system 401M2 includes sensing harness 101M2 instead of sensing harness 101, and includes sensor units 201M2A, 201M2B, and 201M2C that are sensor unit 201M2 instead of sensor unit 201. Compared to sensor unit 201, sensor unit 201M2 does not include AD conversion unit 22 and transmission unit 23.

[0052] Compared to the sensing harness 101, the sensing harness 101M2 has mounting portions 51M2A, 51M2B, and 51M2C which are mounting portion 51M2 instead of mounting portion 51. Compared to mounting portion 51, mounting portion 51M2 includes an AD conversion unit 22 and a transmission unit 23. This allows a passive element such as a thermocouple to be used as the sensor unit 201M2, and measurement can be performed by attaching the passive element to mounting portion 51M2.

[0053] Note that the sensor unit 201M2 may include the AD conversion unit 22 instead of the attachment portion 51M2, and the sensor unit 201M2 may include the transmission unit 23 instead of the attachment portion 51M2.

[0054] The power line 1 and the ground line 2 are lines for supplying power from a power source (not shown) to the sensor unit 201M2 and the mounting portion 51M2. If the sensor element 21 in the sensor unit 201M2 does not require power, power is supplied only to the mounting portion 51M2 via the power line 1 and the ground line 2.

[0055] Next, another embodiment of the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and the description thereof will not be repeated.

[0056] <Second embodiment> As compared with the sensing systems 401, 401M1, and 401M2 according to the first embodiment, this embodiment relates to a sensing system 402 in which measurement results are transmitted over a wired connection. Contents other than those described below are the same as those of the sensing systems 401, 401M1, and 401M2 according to the first embodiment.

[0057] Fig. 6 is a diagram showing a detailed configuration of a sensing system according to a second embodiment of the present disclosure. Referring to Fig. 6, compared to the sensing system 401, the sensing system 402 includes a sensing harness 102 instead of the sensing harness 101, includes sensor units 202A, 202B, and 202C that are sensor units 202 instead of the sensor unit 201, and includes a processing device 302 instead of the processing device 301. An end of the sensing harness 102 is connected to the processing device 302 via a connector (not shown). The power supply line 1 and the ground line 2 in the sensing harness 102 are connected to a power supply (not shown) via the processing device 302.

[0058] Compared to the sensing harness 101, the sensing harness 102 includes a cable 12 instead of the cable 11. Compared to the cable 11, the cable 12 further includes a communication line 4.

[0059] Compared to the sensor unit 201, the sensor unit 202 includes a transmitting unit 24 instead of the transmitting unit 23.

[0060] The processing device 302 and the multiple sensor units 202 are connected in a one-to-multiple relationship via a communication line 4. More specifically, the communication line 4 has multiple branch lines corresponding to the multiple branch portions of the cable 12. The transmitter 24 in the sensor unit 202 is connected to the branch line of the communication line 4 via an attachment portion 51.

[0061] Compared to the processing device 301, the processing device 302 includes a communication unit 34 instead of the communication unit 31. The transmission unit 24 in the sensor unit 202 and the communication unit 34 in the processing device 302 can perform serial communication via a communication line 4 in accordance with SPI (Serial Peripheral Interface), I2C (Inter-Integrated Circuit) or UART (Universal Asynchronous Receiver Transmitter).

[0062] The communication line 4 transmits measurement information including the measurement result by the sensor unit 202 and the ID of the sensor unit 202. More specifically, the transmission unit 24 in the sensor unit 202 periodically or irregularly generates measurement information including the measurement signal received from the AD conversion unit 22 and the ID of the sensor unit 202, and transmits the generated measurement information to the processing device 302 via the communication line 4.

[0063] The processing device 302 acquires the measurement results from the sensor unit 202. More specifically, the communication unit 34 receives measurement information from the sensor unit 202 via the communication line 4, and stores the received measurement information in the storage unit 33.

[0064] The cable 12 may not include the communication line 4. In this case, the transmitter 24 may be configured to transmit the measurement information to the processing device 302 via the power line 1 and the ground line 2, or may be configured to transmit the measurement information to the processing device 302 via the power line 1, or may be configured to transmit the measurement information to the processing device 302 via the ground line 2.

[0065] Moreover, instead of the sensor unit 202, the attachment section 51 may be configured to include at least one of the AD conversion section 22 and the transmission section .

[0066] Next, another embodiment of the present disclosure will be described with reference to the drawings. In the drawings, the same or corresponding parts are designated by the same reference characters and the description thereof will not be repeated.

[0067] <Third embodiment> This embodiment relates to a sensing system 403 in which wired transmission of analog signals indicating measurement results is performed, as compared with the sensing system 402 according to the second embodiment. Contents other than those described below are the same as those of the sensing system 402 according to the second embodiment.

[0068] Fig. 7 is a diagram showing a detailed configuration of a sensing system according to a third embodiment of the present disclosure. Referring to Fig. 7, compared to sensing system 402, sensing system 403 includes sensing harness 103 instead of sensing harness 102, sensor units 203A, 203B, and 203C that are sensor unit 203 instead of sensor unit 202, and processing device 303 instead of processing device 302. An end of sensing harness 103 is connected to processing device 303 via a connector (not shown). Power supply line 1 and ground line 2 in sensing harness 103 are connected to a power supply (not shown) via processing device 303.

[0069] Compared to the sensing harness 102, the sensing harness 103 includes a cable 13 instead of the cable 12. Compared to the cable 12, the cable 13 includes a signal line 5 instead of the communication line 4.

[0070] Compared to the sensor unit 202 , the sensor unit 203 includes an amplitude modulation section 25 instead of the AD conversion section 22 and the transmission section 24 .

[0071] Compared to the processing device 302, the processing device 303 includes an AD conversion unit 35 and a processing unit 36 ​​instead of the processing unit 32 and the communication unit 34.

[0072] The processing device 303 and the multiple sensor units 203 are connected in a one-to-multiple relationship via a signal line 5. More specifically, the signal line 5 has multiple branch lines corresponding to the multiple branching portions in the cable 13. The amplitude modulation section 25 in the sensor unit 203 is connected to the branch line of the signal line 5 via an attachment section 51.

[0073] The signal line 5 transmits an analog signal indicating the measurement result by the sensor unit 203. For example, in the sensing system 403, the measurement results by the multiple sensor units 203 are frequency division multiplexed on the signal line 5 and transmitted to the processing device 303.

[0074] More specifically, each sensor unit 203 is assigned a different carrier frequency f1 as the frequency of a carrier wave for transmitting the measurement result to the processing device 303. As an example, the sensor unit 203A is assigned a carrier frequency f1a which is the carrier frequency f1, the sensor unit 203B is assigned a carrier frequency f1b which is the carrier frequency f1, and the sensor unit 203C is assigned a carrier frequency f1c which is the carrier frequency f1.

[0075] The amplitude modulation section 25 in the sensor unit 203 converts the change in the level of the analog signal received from the sensor element 21 into a change in the amplitude spectrum of the carrier frequency f1 assigned to the sensor unit 203. More specifically, the amplitude modulation section 25 in the sensor unit 203 generates a modulated signal in which the amplitude of the carrier wave of the carrier frequency f1 assigned to the sensor unit 203 is modulated in accordance with the level of the analog signal received from the sensor element 21, and outputs the generated modulated signal to the signal line 5.

[0076] The processing device 303 acquires the measurement results by the sensor unit 203. More specifically, the AD conversion unit 35 in the processing device 303 receives the modulated signal output by the sensor unit 203 via the signal line 5. The AD conversion unit 35 generates a digital signal by sampling the received modulated signal at a predetermined sampling period, and outputs the digital signal to the processing unit 36.

[0077] Processing unit 36 ​​performs FFT (Fast Fourier Transform) processing on the digital signal received from AD conversion unit 35 to generate a power spectrum PS.

[0078] For example, the storage unit 33 stores correspondence information C2 indicating a correspondence relationship between a carrier frequency f1 assigned to the sensor unit 203 and an installation position of the sensor unit 203. In addition, for example, the storage unit 33 stores correspondence information D2 indicating a correspondence relationship between power in the power spectrum PS and a physical quantity PH. The correspondence information C2 and D2 are stored in advance in the storage unit 33 by a user of the sensing system 403.

[0079] The processing unit 36 ​​acquires the physical quantity PH at the installation position of each sensor unit 201 based on the power of the carrier frequencies f1a, f1b, and f1c in the power spectrum PS and the correspondence information C2 and D2 in the storage unit 33. For example, the processing unit 36 ​​transmits the acquired physical quantity PH in a wireless signal to an external device (not shown). The external device detects an abnormality in the house based on the physical quantity PH included in the received wireless signal and notifies the user of the detection result.

[0080] Instead of performing FFT processing on the digital signal received from the AD conversion unit 35, the processing unit 36 ​​may calculate the amplitude of each carrier frequency f1 by correlation detection and obtain the physical quantity PH corresponding to the calculated amplitude.

[0081] Moreover, instead of the sensor unit 203 , the attachment section 51 may be configured to include the amplitude modulation section 25 .

[0082] The cable 13 may also be configured to include a plurality of signal lines 5 corresponding to the plurality of sensor units 203, respectively. In this case, the processing device 303 and each sensor unit 203 are connected one-to-one via the corresponding signal line 5. In this case, the sensor unit 203 may not include the amplitude modulation unit 25.

[0083] <Fourth embodiment> This embodiment relates to a sensing system 404 in which a frequency-modulated signal is transmitted, as compared with the sensing system 403 according to the third embodiment. The contents other than those described below are the same as those of the sensing system 403 according to the third embodiment.

[0084] Fig. 8 is a diagram showing a detailed configuration of a sensing system according to a fourth embodiment of the present disclosure. Referring to Fig. 8, compared to sensing system 403, sensing system 404 includes sensor units 204A, 204B, and 204C that are sensor unit 204 instead of sensor unit 203, and includes processing device 304 instead of processing device 303. An end of sensing harness 103 is connected to processing device 304 via a connector (not shown). Power supply line 1 and ground line 2 in sensing harness 103 are connected to a power supply (not shown) via processing device 304.

[0085] Compared to the sensor unit 203 , the sensor unit 204 includes a frequency modulation section 26 instead of the amplitude modulation section 25 .

[0086] Compared to the processing device 303, the processing device 304 includes a processing device 37 instead of the processing device 36.

[0087] The processing device 304 and the plurality of sensor units 204 are connected in a one-to-multiple relationship via a signal line 5. More specifically, the frequency modulation section 26 in the sensor unit 204 is connected to a branch line of the signal line 5 via an attachment section 51.

[0088] The signal line 5 transmits an analog signal indicating the measurement result by the sensor unit 204. For example, in the sensing system 404, the measurement results by the multiple sensor units 204 are frequency division multiplexed on the signal line 5 and transmitted to the processing device 304.

[0089] More specifically, each sensor unit 204 is assigned a different carrier frequency f2 as the frequency of a carrier wave for transmitting the measurement result to the processing device 304. As an example, the sensor unit 204A is assigned a carrier frequency f2a which is the carrier frequency f2, the sensor unit 204B is assigned a carrier frequency f2b which is the carrier frequency f2, and the sensor unit 204C is assigned a carrier frequency f2c which is the carrier frequency f2.

[0090] Also, different frequency ranges Rf are assigned as frequency modulation bandwidths to the sensor units 204. As an example, the sensor unit 204A is assigned a frequency range Rfa that is the frequency range Rf including the carrier frequency f2a, the sensor unit 204B is assigned a frequency range Rfb that is the frequency range Rf including the carrier frequency f2b, and the sensor unit 204C is assigned a frequency range Rfc that is the frequency range Rf including the carrier frequency f2c.

[0091] The frequency modulation section 26 in the sensor unit 204 converts the change in the level of the analog signal received from the sensor element 21 into a change in the frequency of the carrier frequency f2 assigned to the sensor unit 204. More specifically, the frequency modulation section 26 in the sensor unit 204 generates a modulated signal in which the carrier frequency f2 of the carrier assigned to the sensor unit 204 is modulated in the frequency range Rf in accordance with the level of the analog signal received from the sensor element 21, and outputs the generated modulated signal to the signal line 5.

[0092] The processing device 304 acquires the measurement results from the sensor unit 204. More specifically, the AD conversion unit 35 in the processing device 304 receives the modulated signal output by the sensor unit 204 via the signal line 5. The AD conversion unit 35 generates a digital signal by sampling the received modulated signal at a predetermined sampling period, and outputs the digital signal to the processing unit 37.

[0093] Processing unit 37 performs FFT processing on the digital signal received from AD conversion unit 35 to generate a power spectrum PS.

[0094] For example, the storage unit 33 stores correspondence information C3 indicating the correspondence relationship between the frequency range Rf assigned to the sensor unit 204 and the installation position of the sensor unit 204. Furthermore, for example, the storage unit 33 stores correspondence information D3 indicating the correspondence relationship between the frequency at which the power in the power spectrum PS is a maximum value and the physical quantity PH. The correspondence information C3 and D3 are stored in advance in the storage unit 33 by the user of the sensing system 404.

[0095] The processing unit 37 acquires the physical quantity PH at the installation position of each sensor unit 201 based on the frequency at which the power in the frequency range Rf of the power spectrum PS is at a maximum value and the correspondence information C2, D2 in the storage unit 33. For example, the processing unit 37 transmits the acquired physical quantity PH in a wireless signal to an external device (not shown). The external device detects an abnormality in the house based on the physical quantity PH included in the received wireless signal and notifies the user of the detection result.

[0096] Instead of the sensor unit 204 , the attachment portion 51 may include the frequency modulation portion 26 .

[0097] Furthermore, the cable 13 may be configured to include a plurality of signal lines 5 corresponding to the plurality of sensor units 204, respectively. In this case, the processing device 304 and each sensor unit 204 are connected one-to-one via the corresponding signal line 5. In this case, the sensor unit 204 may not include the frequency modulation unit 26.

[0098] <Fifth embodiment> This embodiment relates to a sensing system 405 in which measurement results are transmitted by time division multiplexing, as compared with the sensing system 403 according to the third embodiment. Contents other than those described below are the same as those of the sensing system 403 according to the third embodiment.

[0099] Fig. 9 is a diagram showing a detailed configuration of a sensing system according to a fifth embodiment of the present disclosure. Referring to Fig. 9, compared to the sensing system 403, the sensing system 405 includes a sensing harness 105 instead of the sensing harness 103, includes sensor units 205A, 205B, and 205C that are sensor units 205 instead of the sensor unit 203, and includes a processing device 305 instead of the processing device 303. An end of the sensing harness 105 is connected to the processing device 305 via a connector (not shown). The power supply line 1 and the ground line 2 in the sensing harness 105 are connected to a power supply (not shown) via the processing device 305.

[0100] Compared to the sensing harness 103, the sensing harness 105 includes a cable 15 instead of the cable 13. Compared to the cable 13, the cable 15 further includes a control line 6.

[0101] Compared to the sensor unit 203 , the sensor unit 205 includes an output control section 27 instead of the amplitude modulation section 25 .

[0102] Compared to the processing device 303, the processing device 305 includes a processing device 38 instead of the processing device 36.

[0103] The processing device 305 and the multiple sensor units 205 are connected one-to-many via a signal line 5, and are also connected one-to-many via a control line 6. More specifically, the control line 6 has multiple branch lines corresponding to the multiple branch portions of the cable 15. The output control unit 27 in the sensor unit 205 is connected to the branch line of the signal line 5 and the branch line of the control line 6 via an attachment portion 51.

[0104] The signal line 5 transmits an analog signal indicating the measurement result by the sensor unit 205. The control line 6 transmits a control signal for controlling the output of a signal by the sensor unit 205 to the signal line 5. For example, in the sensing system 405, the measurement results by the multiple sensor units 205 are time-division multiplexed on the signal line 5 and transmitted to the processing device 305.

[0105] More specifically, the output control unit 27 in the sensor unit 205 is a switch capable of switching between an output-on state in which an analog signal output from the sensor element 21 is output to the signal line 5, and an output-off state in which no analog signal is output to the signal line 5. The output control unit 27 is in the output-off state in the initial state.

[0106] For example, the storage unit 33 stores correspondence information C4 indicating a correspondence relationship between the installation position of the sensor unit 205 and a control value or a level of a control signal indicated by a control signal for switching the output control unit 27 of the sensor unit 205 to an output-on state. Also, for example, the storage unit 33 stores correspondence information D1 indicating a correspondence relationship between the voltage of the measurement signal and the physical quantity PH. The correspondence information C4 and D1 are stored in advance in the storage unit 33 by a user of the sensing system 405.

[0107] The processing unit 38 in the processing device 305 assigns different measurement periods Tm to each sensor unit 205, and acquires, for each measurement period Tm, a measurement result by a target unit, which is a sensor unit 205 corresponding to the measurement period Tm. More specifically, the processing unit 38 generates, for each measurement period Tm, a control signal for switching the output control unit 27 in the target unit to an output on state based on the correspondence information C4 in the storage unit 33, and outputs the generated control signal to the control line 6, thereby switching the output control unit 27 in the target unit from an output off state to an output on state.

[0108] The AD conversion unit 35 in the processing device 305 receives the analog signal output by the sensor unit 205 via the signal line 5. The AD conversion unit 35 samples the received analog signal at a predetermined sampling period to generate a measurement signal, which is a digital signal indicating the measurement result of the sensor element 21, and outputs the generated measurement signal to the processing unit 38.

[0109] The processing unit 38 acquires the physical quantity PH at the installation position of each sensor unit 205 based on the measurement signal received from the AD conversion unit 35 and the correspondence information C4 and D1. For example, the processing unit 38 transmits the acquired physical quantity PH in a wireless signal to an external device (not shown). The external device detects an abnormality in the house based on the physical quantity PH included in the received wireless signal and notifies the user of the detection result.

[0110] Incidentally, the attachment portion 51 may be configured to include the output control portion 27 instead of the sensor unit 205 .

[0111] The cable 15 may also be configured to include a plurality of signal lines 5 corresponding to the plurality of sensor units 205, respectively. In this case, the processing device 305 and each sensor unit 205 are connected one-to-one via the corresponding signal line 5. In this case, the sensor unit 205 may not include the output control unit 27.

[0112] Furthermore, the cable 15 may be configured to include a plurality of control lines 6 corresponding to the plurality of sensor units 205. In this case, the processing device 305 and each sensor unit 205 are connected one-to-one via the corresponding control line 6.

[0113] Sixth embodiment This embodiment relates to a sensing system 406 in which transmission control of measurement results is performed, as compared with the sensing system 402 according to the second embodiment. Contents other than those described below are the same as those of the sensing system 402 according to the second embodiment.

[0114] Fig. 10 is a diagram showing a detailed configuration of a sensing system according to a sixth embodiment of the present disclosure. Referring to Fig. 10, compared to the sensing system 402, the sensing system 406 includes sensor units 206A, 206B, and 206C that are sensor unit 206 instead of sensor unit 202, attachment parts 52A, 52B, and 52C that are attachment part 52 instead of attachment part 51, and a processing device 306 instead of processing device 302. An end of the sensing harness 102 is connected to the processing device 306 via a connector (not shown). The power supply line 1 and the ground line 2 in the sensing harness 102 are connected to a power supply (not shown) via the processing device 306.

[0115] Compared to the sensor unit 202 , the sensor unit 206 does not include the AD conversion section 22 and the transmission section 24 .

[0116] Compared to the attachment unit 51 , the attachment unit 52 includes an AD conversion unit 22 , a transmission unit 71 , a bus control unit 72 and an authentication unit 73 .

[0117] Compared to the processing device 302, the processing device 306 includes a processing device 61 instead of the processing device 32 and a communication device 62 instead of the communication device .

[0118] The processing device 306 and the multiple attachment units 52 are connected in a one-to-multiple relationship via the communication line 4. More specifically, the communication line 4 has multiple branch lines corresponding to the multiple branch units in the cable 12. The bus control unit 72 and the authentication unit 73 in the attachment unit 52 are connected to the branch lines of the communication line 4.

[0119] The transmitting unit 71 in the attachment unit 52 generates measurement information including the measurement signal received from the AD conversion unit 22 , and outputs the generated measurement information to the bus control unit 72 .

[0120] The bus control unit 72 in the attachment unit 52 is a switch or a tri-state buffer that can switch between an output-on state in which the measurement information received from the transmission unit 71 is output to the communication line 4, and an output-off state in which the measurement information is not output. The bus control unit 72 is in the output-off state in the initial state.

[0121] The processing unit 61 in the processing device 306 assigns different measurement periods Tm to each mounting portion 52, and acquires, for each measurement period Tm, a measurement result by the sensor unit 206 connected to the target mounting portion, which is the mounting portion 52 corresponding to the measurement period Tm. For example, the processing unit 61 transmits to each mounting portion 52 transmission request information designating any one mounting portion 52 among the multiple mounting portions 52. More specifically, the processing unit 61 generates transmission request information including the ID of the target mounting portion for each measurement period Tm, and transmits the generated transmission request information to each mounting portion 52 via the communication unit 62 and the communication line 4. The transmission request information is an example of a designation signal.

[0122] Each mounting portion 52 receives transmission request information from the processing device 306 via the cable 12. Among the multiple mounting portions 52, the mounting portion 52 designated by the transmission request information transmits the measurement result of the corresponding sensor unit 206 via the cable 12.

[0123] More specifically, the authentication unit 73 in the attachment unit 52 receives transmission request information from the processing device 306 via the communication line 4, and compares the ID included in the received transmission request information with the ID of the attachment unit 52. If the ID included in the transmission request information does not match the ID of the attachment unit 52, the authentication unit 73 maintains the output off state of the bus control unit 72. On the other hand, if the ID included in the transmission request information matches the ID of the attachment unit 52, the authentication unit 73 switches the bus control unit 72 from the output off state to the output on state, and outputs an output start instruction to the transmission unit 71.

[0124] Upon receiving an output start instruction from the authentication unit 73, the transmitting unit 71 generates measurement information including the measurement signal received from the AD conversion unit 22 at a timing according to a predetermined period, and transmits the generated measurement information to the processing device 306 via the bus control unit 72 and the communication line 4.

[0125] When a predetermined time has elapsed since the bus control unit 72 was switched from the output-off state to the output-on state, the authentication unit 73 switches the bus control unit 72 from the output-on state to the output-off state and outputs an output stop instruction to the transmission unit 71.

[0126] Upon receiving an output stop instruction from the bus control unit 72, the transmission unit 71 stops generating and transmitting the measurement information.

[0127] The communication unit 62 in the processing device 306 receives the measurement information from the attachment unit 52 via the communication line 4, and outputs the received measurement information to the processing unit 61. The processing unit 61 stores the measurement information received from the communication unit 62 during the measurement period Tm in the memory unit 33 in association with the ID of the attachment unit 52 to which the measurement period Tm is assigned.

[0128] Instead of the attachment portion 52 , the sensor unit 206 may include the AD conversion portion 22 .

[0129] Also, the cable 12 may be configured to include a signal line 5 in addition to the communication line 4. In this case, the attachment section 52 does not include the AD conversion section 22 and the transmission section 71, and includes an analog switch instead of the bus control section 72. The processing section 61 in the processing device 306 transmits transmission request information including the ID of the target attachment section to the attachment section 52 via the communication section 62 and the communication line 4. The authentication section 73 in the attachment section 52 collates the ID included in the transmission request information received from the processing device 306 via the communication line 4 with the ID of the attachment section 52, and when the ID included in the transmission request information matches the ID of the attachment section 52, switches the analog switch from an output-off state to an output-on state. The communication section 62 in the processing device 306 receives an analog signal output by the sensor element 21 in the sensor unit 206 attached to the attachment section 52 via the attachment section 52 whose analog switch is in an output-on state and the signal line 5. The communication section 62 generates a digital measurement signal by sampling the received analog signal, and outputs the generated measurement signal to the processing section 61.

[0130] Also, the cable 12 may be configured to include signal lines 5A and 5B, which are the signal line 5, instead of the communication line 4. In this case, the attachment section 52 does not include the AD conversion section 22 and the transmission section 71, and includes an analog switch instead of the bus control section 72. The processing section 61 in the processing device 306 transmits an analog designation signal indicating the ID of the target attachment section to the attachment section 52 via the communication section 62 and the signal line 5A. The authentication section 73 in the attachment section 52 collates the ID indicated by the designation signal received from the processing device 306 via the signal line 5A with the ID of the attachment section 52, and when the ID indicated by the designation signal matches the ID of the attachment section 52, switches the analog switch from an output-off state to an output-on state. The communication section 62 in the processing device 306 receives the analog signal output by the sensor element 21 in the sensor unit 206 attached to the attachment section 52 via the attachment section 52 in which the analog switch is in an output-on state and the signal line 5B. The communication unit 62 generates a digital measurement signal by sampling the received analog signal, and outputs the generated measurement signal to the processing unit 61.

[0131] Also, the cable 12 may be configured to include a signal line 5 instead of the communication line 4. In this case, the attachment section 52 does not include the AD conversion section 22 and the transmission section 71, and includes an analog switch instead of the bus control section 72. The processing section 61 in the processing device 306 transmits an analog designation signal, which indicates the ID of the target attachment section and has a frequency band different from the frequency band of the analog signal output from the sensor element 21, to the attachment section 52 via the communication section 62 and the signal line 5. The authentication section 73 in the attachment section 52 collates the ID indicated by the designation signal received from the processing device 306 via the signal line 5 with the ID of the attachment section 52, and when the ID indicated by the designation signal matches the ID of the attachment section 52, switches the analog switch from an output-off state to an output-on state. The communication section 62 in the processing device 306 receives the analog signal output by the sensor element 21 in the sensor unit 206 attached to the attachment section 52 via the attachment section 52 and the signal line 5 in which the analog switch is in an output-on state. The communication unit 62 generates a digital measurement signal by sampling the received analog signal, and outputs the generated measurement signal to the processing unit 61.

[0132] <Seventh embodiment> This embodiment relates to a sensing system 407 in which transmission control of measurement results is performed, as compared with the sensing system 403 according to the third embodiment. Contents other than those described below are the same as the sensing system 403 according to the third embodiment.

[0133] Fig. 11 is a diagram showing a detailed configuration of a sensing system according to a seventh embodiment of the present disclosure. Referring to Fig. 11, compared to the sensing system 403, the sensing system 407 includes sensor units 207A, 207B, and 207C that are sensor unit 207 instead of sensor unit 203, attachment parts 53A, 53B, and 53C that are attachment part 53 instead of attachment part 51, and a processing device 307 instead of processing device 303. An end of the sensing harness 103 is connected to the processing device 307 via a connector (not shown). The power supply line 1 and the ground line 2 in the sensing harness 103 are connected to a power supply (not shown) via the processing device 307.

[0134] Compared to sensor unit 203, sensor unit 207 includes sensor element 21M instead of sensor element 21, and does not include amplitude modulation unit 25. Sensor element 21M is an element whose electrical characteristics change in response to physical quantity PH of the measurement target. For example, sensor element 21M has a resistance value that changes in response to physical quantity PH of the measurement target.

[0135] The mounting portion 53 includes a band-limiting circuit 74 in comparison with the mounting portion 51. For example, the band-limiting circuit 74 is a band-pass filter configured using a resistor, a capacitor, and an inductor. The band-limiting circuits 74 in the mounting portions 51 have different pass bands PB.

[0136] Compared to the processing device 303, the processing device 307 includes a processing unit 63 instead of the processing unit 36 ​​and a conversion unit 64 instead of the AD conversion unit 35.

[0137] The processing device 307 and the multiple mounting parts 53 are connected in a one-to-multiple relationship via a signal line 5. More specifically, the signal line 5 has multiple branch lines corresponding to the multiple branch parts in the cable 13. The band limiting circuit 74 in the mounting part 53 is connected to the branch line of the signal line 5. In addition, the sensor element 21M in the sensor unit 207 is connected to the branch line of the signal line 5 via the band limiting circuit 74.

[0138] The signal line 5 transmits an analog signal that indicates the result of measurement by the sensor unit 207 and that has passed through a band limiting circuit 74 .

[0139] More specifically, the memory unit 33 in the processing device 307 stores a digital signal obtained by digitally converting a sine wave whose frequency increases in proportion to time. That is, the memory unit 33 stores a digital signal corresponding to a frequency sweep signal. During the measurement period, the processing unit 63 acquires the digital signal from the memory unit 33 and outputs it to the conversion unit 64. The conversion unit 64 outputs to the signal line 5 a sweep signal generated by analog converting the digital signal received from the processing unit 63.

[0140] The sweep signal output by the conversion unit 64 passes through the band limiting circuit 74 in each mounting portion 53 and is reflected by the sensor element 21M in the sensor unit 207. The conversion unit 64 receives a reflected signal, which is the sweep signal that has passed through the band limiting circuit 74 and is reflected by the sensor element 21M, via the band limiting circuit 74 and the signal line 5. The conversion unit 64 generates a digital signal by sampling the received reflected signal and outputs the digital signal to the processing unit 63.

[0141] The processing unit 63 performs FFT processing on the digital signal received from the conversion unit 64 to generate a power spectrum PS.

[0142] For example, the storage unit 33 stores correspondence information C5 indicating a correspondence relationship between the attachment portion 53 and the passband PB of the band limiting circuit 74 in the attachment portion 53. In addition, for example, the storage unit 33 stores correspondence information D5 indicating a correspondence relationship between the power in the power spectrum PS and the physical quantity PH. The correspondence information C5 and D5 are saved in advance in the storage unit 33 by the user of the sensing system 407.

[0143] The processing unit 63 acquires the physical quantity PH at the installation position of the sensor unit 207 attached to each attachment portion 53, based on the power of each passband PB in the power spectrum PS and the correspondence information C5, D5 in the storage unit 33.

[0144] The signal line 5 may be configured to transmit a digital signal that indicates the measurement result by the sensor unit 207 and has passed through the band limiting circuit 74. More specifically, the storage unit 33 in the processing device 307 stores a 1-bit digital signal Ds obtained by, for example, delta-sigma modulating a sine wave. The processing unit 63 acquires the digital signal Ds from the storage unit 33 and outputs it to the signal line 5 during the measurement period.

[0145] The conversion unit 64 receives, via the signal line 5, an analog reflected signal that has passed through the band limiting circuit 74 after the digital signal Ds has passed through the band limiting circuit 74 and is reflected at the sensor element 21M, and generates a digital signal by sampling the received reflected signal and outputs the digital signal to the processing unit 63.

[0146] The processing unit 63 generates a power spectrum PS by performing FFT processing on the digital signal received from the conversion unit 64. The processing unit 63 acquires a physical quantity PH at the installation position of the sensor unit 207 attached to each mounting portion 53, based on the power of each passband PB in the power spectrum PS and the correspondence information C5 and D5 in the storage unit 33.

[0147] Furthermore, the sensing systems 401, 401M1, 401M2, 402, 403, 404, 405, 406, and 407 according to the embodiments of the present disclosure may be provided in a vehicle. In this case, the sensing harnesses 101, 101M1, 101M2, 102, 103, 105, 106, and 107 are provided along various cables in a wire harness of an in-vehicle network. Non-exposed parts of a vehicle, such as an engine room and an instrument panel, are placed in a harsh environment. Here, when sensor units are provided at multiple positions in the non-exposed parts and each sensor unit is connected to a power source in a one-to-one relationship, the circuitry and wiring may become complicated. In contrast, the sensing systems 401, 402, 403, 404, 405, 406, and 407 can supply power to each sensor unit 201, 202, 203, 204, 205, 206, and 207 using a single sensing harness 101, 101M1, 101M2, 102, 103, 105, 106, and 107, so that temperature, humidity, and the like can be monitored at multiple points in the non-exposed portion without complicating the circuits and wiring.

[0148] Furthermore, the sensing systems 401, 401M1, 401M2, 402, 403, 404, 405, 406, and 407 according to the embodiments of the present disclosure may be provided in a robot. In this case, the sensing harnesses 101, 101M1, 101M2, 102, 103, 105, 106, and 107 are provided along the arrangement of a plurality of driving units in the robot. The driving units of the robot become hot due to heat generated by components such as motors and actuators. Here, when a sensor unit is provided for each driving unit and each sensor unit is connected to a power source in a one-to-one relationship, the circuitry and wiring may become complicated. In contrast, the sensing systems 401, 401M1, 401M2, 402, 403, 404, 405, 406, and 407 can supply power to each sensor unit 201, 202, 203, 204, 205, 206, and 207 using a single sensing harness 101, 101M1, 101M2, 102, 103, 105, 106, and 107, so that temperatures in multiple driving parts can be monitored without complicating the circuits and wiring.

[0149] The above-described embodiments should be considered as illustrative and not restrictive in all respects. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims.

[0150] Each process (each function) of the above-mentioned embodiment is realized by a processing circuit (circuitry) including one or more processors. The above-mentioned processing circuit may be composed of an integrated circuit or the like in which one or more memories, various analog circuits, and various digital circuits are combined in addition to the above-mentioned one or more processors. The above-mentioned one or more memories store programs (instructions) that cause the above-mentioned one or more processors to execute each of the above-mentioned processes. The above-mentioned one or more processors may execute each of the above-mentioned processes according to the programs read from the above-mentioned one or more memories, or may execute each of the above-mentioned processes according to a logic circuit designed in advance to execute each of the above-mentioned processes. The above-mentioned processors may be various processors suitable for computer control, such as a CPU (Central Processing Unit), a GPU (Graphics Processing Unit), a DSP (Digital Signal Processor), an FPGA (Field Programmable Gate Array), and an ASIC (Application Specific Integrated Circuit). The above-mentioned physically separated processors may execute each of the above-mentioned processes in cooperation with each other. For example, the processors mounted on each of a plurality of physically separated computers may cooperate with each other via a network such as a LAN (Local Area Network), a WAN (Wide Area Network), the Internet, etc. The program may be installed in the memory from an external server device or the like via the network, or may be distributed in a state stored in a recording medium such as a CD-ROM (Compact Disc Read Only Memory), a DVD-ROM (Digital Versatile Disc Read Only Memory), or a semiconductor memory, and installed in the memory from the recording medium.

[0151] The above description includes the following additional features. [Appendix 1] Cables and a plurality of attachment portions provided on the cable to which the sensor units can be attached; the cable includes a power line for supplying power to at least one of the mounting portion and the sensor unit attached to the mounting portion, The sensing harness, wherein the minimum bend radius of the cable is 10 millimeters or less. [Explanation of symbols]

[0152] 1 Power line 2 Ground wire 3 Sheath 4 Communication lines 5 Signal Line 6 Control Line 11,11M1,12,13,15 Cable 21,21M Sensor element 22 AD conversion section 23,24,71 Transmitter 25 Amplitude modulation section 26 Frequency modulation section 27 Output control section 31, 34, 62 Communications Department 32, 36, 37, 38, 61, 63 Processing section 33 Storage section 35 AD conversion section 41,42 Insertion part 51, 51A, 51B, 51C, 51M1, 51M1A, 51M1B, 51M1C, 51M2, 51M2A, 51M2B, 51M2C, 52, 52A, 52B, 52C, 53, 53A, 53B, 53C Mounting part 64 Conversion unit 72 Bus control section 73 Authentication Section 74 Bandwidth limiting circuit 101, 101M1, 101M2, 102, 103, 105, 106, 107 Sensing harness 201,201A,201B,201C,201M2,201M2A,201M2B,201M2C,202,202A,202B,202C,203,203A,203B,203C,204,204A,204B,204C,205,205A,205B,205C,206,206A,206B,206C,207,207A,207B,207C Sensor unit 301, 302, 303, 304, 305, 306, 307 Processing equipment 401, 401M1, 401M2, 402, 403, 404, 405, 406, 407 Sensing System MR Mark

Claims

1. Cables and a plurality of attachment portions provided on the cable to which the sensor units can be attached; The cable includes a power line for supplying power to at least one of the mounting portion and the sensor unit attached to the mounting portion.

2. The sensing harness according to claim 1 , wherein the cable further includes a communication line for transmitting measurement information including a measurement result by the sensor unit and an identifier of the sensor unit.

3. The sensing harness according to claim 1 , wherein the cable further includes a signal line for transmitting a signal indicative of a measurement result obtained by the sensor unit.

4. the plurality of mounting portions each include a band-limiting circuit having a different passband; The sensing harness according to claim 3 , wherein the signal line transmits a signal that indicates a measurement result by the sensor unit and that has passed through the band limiting circuit.

5. The sensing harness according to claim 3 , wherein the cable further includes a control line that transmits a control signal for controlling output of a signal to the signal line by the sensor unit.

6. the plurality of mounting portions receive a designation signal via the cable designating any one of the plurality of mounting portions; The sensing harness according to claim 1 , wherein the attachment portion designated by the designation signal among the plurality of attachment portions transmits the measurement result by the sensor unit via the cable.

7. The sensing harness according to claim 1 , wherein the attachment portion is detachably provided on the cable.

8. The sensor unit includes a sensor element. The sensing harness according to claim 1 , wherein the attachment portion includes a processing portion that acquires a measurement result of the sensor element.

9. A sensing harness including a cable and a plurality of attachment portions provided on the cable; A sensor unit attached to the attachment portion; a processing device for acquiring a measurement result by the sensor unit, A sensing system, wherein the cable includes a power line for supplying power to at least one of the mounting portion and the sensor unit.

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