JP7449510B2 - sensor device - Google Patents

Description

The present invention relates to a sensor device and a livestock management system.

2. Description of the Related Art Sensor devices having a switching means for switching between supplying and cutting off power are conventionally known (Patent Document 1). The sensor section of the sensor device can measure at least one of temperature, humidity, illuminance, atmospheric pressure, carbon dioxide concentration, methane gas concentration, and wind force. The switching means switches the supply of power to the sensor section and the communication section, and power consumption can be minimized by turning on and off the switching means. The sensor device is attached to an ear tag or the like that is attached to the cow's ear, and the power source is natural energy such as sunlight.

In another biological information collection device, information from a temperature sensor and an acceleration sensor embedded in a small animal that is a model living body is wirelessly transmitted from a child device to a parent device (Patent Document 2). The temperature sensor, acceleration sensor, and control unit of the slave unit operate by receiving power from a coin battery as a power source. Sensing data is transmitted wirelessly, so it does not interfere with the biological activities of small animals.

JP 2020-27454 Publication JP2015-82978A

In order to minimize power consumption, the sensor section of a conventional sensor device is activated for a short time to collect data, and after the data is transmitted by the communication section, power supply is cut off. As a result, the data that the sensor unit can collect is limited to temperature, humidity, etc., and the information that can be obtained from these data is also limited. In addition, there was a desire to collect measurement data with a large amount of information such as sound data and image data, but collecting such measurement data consumes a huge amount of power, making it difficult to obtain practical data. .

In the biological information collection device described in Patent Document 2, power is supplied from a coin battery as a power source to an acceleration sensor and a control unit, and data indicating the horizontal movement distance, body temperature, and number of rises of a model living body is collected every minute. The data is stored and sent to the base unit every 4 minutes. In this case, the amount of coin battery consumption increases, so in the case of large animals such as livestock grazing on vast grounds, it is difficult to notice when the battery is depleted, and necessary data may not be obtained.

Therefore, an object of the present invention is to provide a sensor device that can collect necessary measurement data while suppressing power consumption.

In order to solve the above-mentioned problems, a first invention is a sensor device for detecting the state of the livestock that is detachably attached to the livestock, the sensor device comprising: a power supply unit that supplies electric power; a control unit operated by the supplied electric power; a microphone operated by the electric power supplied from the power supply unit and detecting surrounding sounds; a storage unit storing sound data detected by the microphone; a communication section that operates with the power supplied from the power supply section and transmits the sound data stored in the storage section to an external device by wireless communication; When the sound data satisfies a predetermined condition, storage of the sound detected by the microphone into the storage unit is started, and the communication unit starts storing the sound detected by the microphone into the storage unit, and after the storage of the sound data by the control unit is completed, When the sound data detected by the microphone satisfies the predetermined condition within a predetermined time, the sound data stored in the storage unit is transmitted to the external device, and the communication unit When the sound data detected by the microphone does not satisfy the predetermined condition within the predetermined time after completion of storage in the storage unit, transmitting the sound data stored in the storage unit to the external device. The company provides sensor devices that are characterized by:

In a second invention, the sensor device according to the first invention further includes an activation sensor that detects a change in the surroundings, and when a detection result of the activation sensor satisfies a predetermined condition, the The device is characterized in that the power is supplied from the power supply unit to start detecting the voice, and the power is supplied to the control unit from the power supply unit to start up.

In a third invention, the sensor device according to the second invention further includes a temperature detection part that operates by the electric power supplied from the power supply part and detects ambient temperature, and When the detection result of the sensor satisfies the predetermined condition, the power is supplied to the temperature detection section from the power supply section to start detecting the temperature, store the temperature data in the storage section, and perform the communication. The unit is characterized in that when the sound data detected by the microphone satisfies a predetermined condition, the sound data and the temperature data are transmitted to the external device.

According to the first invention, when the sound data detected by the microphone satisfies a predetermined condition, it starts to be stored in the storage unit, so only the sound data for a necessary period can be stored, which reduces power consumption. can do. Furthermore, since sound data has a large capacity, if the sound data is stored for a long time, there is a possibility that the capacity of the storage unit will become full. However, according to the present invention, only the minimum necessary sound data can be acquired, so the capacity of the storage unit is not consumed. This makes it possible to efficiently collect only the really necessary sound data. Furthermore, since the microphone can record sounds around the sensor device, it is possible to more accurately grasp the surrounding situation compared to conventional data such as temperature and humidity. Furthermore, since the communication section transmits the sound data stored in the storage section to an external device, the situation around the sensor device can be grasped from a remote location.

According to the second invention, power is supplied to the microphone when the detection result of the activation sensor satisfies a predetermined condition, so that the microphone is activated only when it is necessary to acquire sound data. Thereby, the power consumption of the sensor device can be further reduced. Further, since power is supplied to the control unit when the detection result of the activation sensor satisfies a predetermined condition, the control unit is activated only when necessary. Thereby, the power consumption of the sensor device can be further reduced.

According to the third invention, when the detection result of the activation sensor satisfies a predetermined condition, power is supplied to the temperature detection unit and starts temperature detection, thereby further reducing the power consumption of the sensor device. be able to. Furthermore, compared to conventional sensor devices in which the temperature detection section periodically detects temperature at predetermined intervals, temperature is detected when predetermined conditions are met, so the necessary measurement data can be transmitted using minimal power consumption. It can be collected at. Moreover, since the communication unit transmits the sound data and temperature data to the external device when the sound data detected by the microphone satisfies a predetermined condition, necessary data can be efficiently transmitted to the external device. Thereby, the power consumption of the sensor device can be further reduced.

Furthermore , since the process stops after a predetermined period of time has elapsed since the start of storage in the storage unit, power consumption can be minimized and only necessary sound data can be efficiently collected. Moreover, since the power supply to the control unit and the microphone is cut off at the same time, power consumption in the standby state can be suppressed.

Furthermore , since the sensor device starts recording sound when the frequency detected by the microphone satisfies a predetermined condition, it is possible to record sound data emitted by livestock and to suppress power consumption. Furthermore, it is possible to avoid a situation where really necessary sound data cannot be obtained. Furthermore, since the sound of livestock can be recorded using a microphone, more information can be obtained compared to conventional data such as temperature and humidity. Furthermore, since the communication unit transmits the data stored in the storage unit to an external device, the condition of the livestock can be grasped from a remote location.

Schematic diagram of a sensor system according to a first embodiment of the invention FIG. 2 is a front view of the sensor device of the sensor system according to the first embodiment of the present invention when it is attached to an earmark. FIG. 2 is a diagram showing an ear tag equipped with a sensor device according to a first embodiment of the present invention being worn on a cow's ear. FIG. 1 is a block diagram of a sensor device according to a first embodiment of the present invention. 1 is a flowchart of a sensor system according to a first embodiment of the present invention. 5 is a time chart showing the voltage of the sensor system according to the first embodiment of the present invention. 6 is a graph showing microphone detection results of the sensor system according to the first embodiment of the present invention. 8 is a graph showing an enlarged portion of the detection results of FIG. 7 of the sensor system according to the first embodiment of the present invention. 6 is a graph showing microphone detection results of the sensor system according to the first embodiment of the present invention. 10 is a graph showing an enlarged portion of the detection results of the sensor system in FIG. 9 according to the first embodiment of the present invention. 5 is a flowchart of a sensor system according to a second embodiment of the present invention. 7 is a flowchart of a sensor system according to a third embodiment of the present invention. FIG. 6 is a perspective view of a sensor system according to a fourth embodiment of the present invention. FIG. 7 is a diagram showing how the sensor system according to the fifth embodiment of the present invention is used. FIG. 7 is a diagram showing how the sensor system according to the sixth embodiment of the present invention is used.

A sensor system 1 according to a first embodiment of the present invention will be described based on FIGS. 1 to 10. The sensor system 1 acquires the sounds emitted by livestock such as the cow 10 and the body temperature of the cow 10 as measurement data, and stores the data in a server to grasp the condition of the livestock. The livestock to be managed may be other than the cow 10, such as pigs, horses, sheep, chickens, pets, etc. Furthermore, the sensor system 1 can be applied not only to livestock but also to animals such as humans, fish, birds, and insects. Note that the field of use of the sensor system 1 is not limited to the management and monitoring of animals, etc., and can be used as various IoT (Internet of Things) devices.

The sensor system 1 includes a sensor device 2 attached to a cow 10, a receiver 3 that receives data transmitted from the sensor device 2, a PC terminal 4, a mobile terminal 5, and a cloud server 6. ing. Measurement data transmitted from the sensor device 2 is stored in the cloud server 6 via the receiver 3. The PC terminal 4 and the mobile terminal 5 can view information stored in the cloud server 6 via the communication network. Note that the measurement data received by the receiver 3 may be stored in the sensor device 2 in the PC terminal 4 or the mobile terminal 5 without going through the cloud server 6. The receiver 3, PC terminal 4, mobile terminal 5, and cloud server 6 are examples of external devices of the present invention.

As shown in FIG. 2, the sensor device 2 is covered with a waterproof, dustproof, and dirtproof casing 20 and is fixed to an ear tag 11 that is attached to the ear of a cow 10. As shown in FIG. 4, the sensor device 2 includes a main body 2A, a sensor unit 2B, and a cable 2C connecting the main body 2A and the sensor unit 2B. As shown in FIG. 3(a), the ear tag 11 includes a joining member 12 on which a bar code and a predetermined number are printed, and a joining member 13 having a penetrating holding hole 15 formed therein. Ru. The joining member 12 is provided with a protrusion 14 having a hollow interior and can be engaged with a holding hole 15 of the member to be joined 13 .

As shown in FIG. 3(b), the ear tag 11 is fixed to the ear 10A by making a hole in the ear 10A of the cow 10, passing the protrusion 14 through it, and holding the protrusion 14 in the holding hole 15. As shown by the dotted line in FIG. 3, the main body 2A of the sensor device 2 is housed in the casing 20, the sensor unit 2B is housed inside the protrusion 14, and the main body 2A and the sensor unit 2B are connected by a cable 2C. Ru. Thereby, even if the cows 10 rub their bodies against a fence or the like or collide with each other, the casing 20 will not easily come off from the cows 10. Moreover, since the sensor unit 2B is arranged inside the protrusion 14 that penetrates the ear 10A, it is possible to detect the body temperature of the cow 10 and vibrations of the sound of the cow 10 with high accuracy. Note that the sensor device 2 is preferably attached to a place that does not cause stress to the cow 10, and it may be attached to the area around the tail, back, legs, etc. in addition to the ear tag 11. When the sensor device 2 is attached to a collar, it is desirable to place it on the back of the collar in order to efficiently detect the sounds of the cow 10 and the like.

As shown in FIG. 4, the main body 2A of the sensor device 2 includes a control section 21, a power supply section 23, a storage section 24, and a communication section 26. The control unit 21 is a microcomputer that controls the entire sensor device 2, and includes a timer 21A, a power control unit that controls the power supply unit 23, and an AD converter.

The power supply unit 23 uses a button battery in this embodiment, but is not limited to this, and is a micro energy harvester that generates power from the surrounding environment, such as heat, light, vibration, radio waves such as electromagnetic waves, Alternatively, power generation may be performed based on organic matter such as plants. Further, power generation using electromagnetic waves may be used, or a hybrid type that combines solar power generation and electromagnetic wave power generation may be used. Thereby, the sensor device 2 can be stably operated even when there is no sunlight for a long period of time or when the cow 10 is in the cowshed for a long time. In this case, it is desirable to provide a power storage unit that stores the generated power. A small supercapacitor, a lithium ion capacitor, a ceramic capacitor, a film capacitor, a tantalum capacitor, or a lithium ion battery can be used as the power storage unit.

The storage unit 24 is a memory that temporarily stores data measured by the measurement sensor 22. In this embodiment, a removable micro SD card is used, but the present invention is not limited to this, and may be other external memory or internal memory. The storage unit 24 stores sound data 24A and temperature data 24B measured by the sensor unit 2B, and the data is overwritten when a predetermined capacity is exceeded.

The communication unit 26 performs data communication with the receiver 3 using Bluetooth (registered trademark). The communication method between the communication unit 26 and the receiver 3 is not limited to this, and may include Wifi (registered trademark), Zigbee (registered trademark), LPWA (Low Power Wide Area), 920MHz band wireless communication, wireless LAN, 3G, 4G, Alternatively, 5G mobile communication, infrared communication, etc. may be used. During data communication between the communication unit 26 and the receiver 3, the identifier assigned to each sensor device 2 is transmitted together with the environmental data measured by the measurement sensor 22. Thereby, on the cloud server 6, it is possible to identify which sensor device 2 is responsible for the obtained environmental data. The identifier may be assigned to the sensor device 2 in advance, or may be assigned when the sensor device 2 and the receiver 3 start communication.

The sensor unit 2B is electrically connected to the main body portion 2A via a cable C, and includes a measurement sensor 22 and a starting sensor 25. The measurement sensor 22 includes a microphone 22A that detects surrounding sounds and a temperature detection section 22B that detects environmental temperature. The measurement sensor 22 is not limited to this, and may be capable of measuring temperature, humidity, illuminance, atmospheric pressure, CO2 concentration, methane gas concentration, and wind force. Further, as the measurement sensor 22, a 9-axis gyro sensor, a vibration sensor, a touch sensor using a capacitance sensor, a magnetic sensor, a pyroelectric sensor, an ultrasonic sensor, or the like can be used. The measurement sensor 22 is connected to the communication section 26 through serial communication using an I2C bus. The control unit 21 converts the digital signal received through serial communication from the measurement sensor 22 into numerical data by entering it into a predetermined calculation formula, and stores the numerical data in the storage unit 24 .

The activation sensor 25 is composed of a piezoelectric element that generates a voltage by detecting vibration or the like. The sensor device 2 can switch between a measurement mode and a deep sleep mode, and in the measurement mode, power is supplied to each element, and in the deep sleep mode, power is not supplied to any element. The activation sensor 25 is an element for detecting switching from deep sleep mode to measurement mode. The activation sensor 25 is not limited to this, as long as it is an element that emits a signal under predetermined conditions even when no power is supplied from the power supply section 23. For example, a bending sensor or a stretching strain sensor may be used. Triggered by a voltage signal generated by the activation sensor 25, the control unit 21, measurement sensor 22, and communication unit 26 are activated. Since the activation sensor 25 does not require power from the power supply unit 23, power consumption in deep sleep mode can be suppressed.

A plurality of receivers 3 are provided so as to cover a ranch and a cowshed that are the movement range of the cow 10, and data transmitted from the communication unit 26 is received by at least one receiver 3. The data received by the receiver 3 is given an identifier of the receiver 3 and transmitted to the cloud server 6. The PC terminal 4 and the mobile terminal 5 can view data stored in the cloud server 6. The PC terminal 4 is placed at a location away from the cowshed, and the mobile terminal 5 is held by a worker who manages the cowshed. A worker at the cowshed can grasp the condition of the cow 10 using the mobile terminal 5 while working.

Next, sensing by the sensor device 2 will be described with reference to FIGS. 5 to 7. In this embodiment, information on the cow 10 before and after calving is particularly collected. If the calving of the cow 10 takes a long time, there is a possibility that the calf will die due to a calving accident, so it is necessary for a worker to assist with the calving. The calving timing of the cow 10 can be ascertained by the sensor device 2, and calving accidents can be reduced by the operator rushing to the calving timing. Furthermore, by managing the body temperature of the cow 10 with the temperature detection unit 22B, it can be used to detect the estrous state of the cow 10 or to manage the physical condition of the cow 10.

In the initial state, the sensor device 2 is in deep sleep mode, and power is not supplied to any element from the power supply unit 23, so power consumption is almost zero. When the activation sensor 25 detects a predetermined vibration (S1: YES, t1 in FIG. 6), the deep sleep mode is switched to the measurement mode. Specifically, power is supplied from the power supply section 23 to the control section 21 and the control section 21 is activated (S2, t2 in FIG. 6). At the same time as the control section 21 is activated, the timer 21A starts counting. When a predetermined period of time has elapsed from activation of the control unit 21, the measurement mode is switched to the deep sleep mode, and power supply to all elements is cut off.

A voltage signal output by the activation sensor 25 is output to a Power Good pin and an Enable pin for activating the control unit 21. As a result, power is supplied from the power supply section 23 to the control section 21 . The activation sensor 25 detects the sound of the cow 10 having a specific frequency as a vibration. This frequency band is detected because the cow 10 starts breathing heavily and cries repeatedly with painful moans just before giving birth. Since the frequency band of the cow 10's breathing before calving is 0.5 to 2.0 kHz, this frequency band is set as the activation frequency of the activation sensor 25. Note that the present invention is not limited to this, and the frequency band in which the activation sensor 25 is activated can be arbitrarily set depending on the type and sound of the livestock. When a bending sensor or an expansion/contraction strain sensor is used as the activation sensor 25, the control unit 21 may be activated by actions such as standing, sitting, or shaking the body of the cow 10, or may be triggered by udder tension, etc. .

The control unit 21 supplies power from the power supply unit 23 to the measurement sensor 22 (S3, t3 in FIG. 6). As a result, the microphone 22A and the temperature detection section 22B are activated, and the microphone 22A starts detecting surrounding sounds, and the temperature detection section 22B starts detecting the temperature of the ear 10A of the cow 10 (S3). At this time, the measurement data detected by the measurement sensor 22 is not stored in the storage unit 24.

7 and 8 show the detection results of the microphone 22A when the cow 10 emits painful moans or heavy breathing just before giving birth. The sampling frequency of the microphone 22A is set to 24 kHz. FIG. 7 shows a waveform of the sound detected by the microphone 22A and a spectrogram of the sound detected by the microphone 22A after the measurement sensor 22 is activated at time t3. FIG. 8 is an enlarged waveform and spectrogram at time t4 in FIG.

The control unit 21 determines whether the frequency band of the microphone 22A is a frequency band for starting storage in the storage unit 24 (S4). In this embodiment, the cow 10 detects the sound of a specific frequency as vibration. Similar to the activation sensor 25, this frequency band is detected because the cow 10 becomes labored breathing and repeatedly makes painful moans just before giving birth. As shown in FIGS. 7 and 8, the frequency band of the cow 10's moaning, etc. is 0.5 to 2 kHz, so these bands are set, and if this state continues for 10 ms or more, the sound data is stored in the storage unit 24. 24A recording is started (S4: YES, t4 in FIG. 6). As shown in FIG. 8, time t4' is the start time of the cow 10's moaning, and the frequency band continues to be in the range of 0.5 to 2 kHz for 20 ms until time T4''. Thereby, the control unit 21 determines that the frequency band of the microphone 22A is the frequency band for starting storage in the storage unit 24. The frequency band at which the storage in the storage unit 24 is started is not limited to this, and can be arbitrarily set depending on the type of livestock and the frequency band of the sound. Further, a frequency band different from the frequency band that triggers the activation sensor 25 may be set. Furthermore, the duration of the frequency for starting storage in the storage unit 24 is not limited to 10 ms, but can be set to any numerical value.

The control unit 21 stores the sound detected by the microphone 22A as sound data 24A in the storage unit 24, and simultaneously stores the temperature detected by the temperature detection unit 22B in the storage unit 24 as temperature data 24B (S5). In this embodiment, storage in the storage unit 24 is started based on the frequency band of the microphone 22A, but the present invention is not limited to this, and storage in the storage unit 24 is started based on the temperature detected by the temperature detection unit 22B. Good too. When the cow 10 approaches calving or becomes unwell, there is a sudden change in body temperature, and this change is detected.

The control unit 21 stores sound data 24A detected by the microphone 22A and temperature data 24B detected by the temperature detection unit 22B, which are measurement data, in the storage unit 24 for several seconds. In this embodiment, the time is set to 10 seconds, but the time is not limited to this and any value can be set. When the storage in the storage unit 24 is completed (t5 in FIGS. 6 and 7), the control unit 21 determines whether or not to transmit the measurement data stored in the storage unit 24 to the outside (S6). In this embodiment, it is determined whether or not the measurement data can be transmitted depending on whether the microphone 22A detects the sound of the cow 10 at a specific frequency within 5 seconds after the measurement data is stored (S6). If the state in which the cow 10 moans again in the frequency band of 0.5 to 2 kHz continues for 10 ms or more (S6: YES), the control unit 21 stores the measurement data from time t4 to time t5 stored in S5, The information is wirelessly transmitted to the cloud server 6 via the communication unit 26 (S7, t6 in FIGS. 6 and 7). At this time, the measurement data stored in S5 may be deleted or may be retained.

The measurement data of the sensor device 2 stored in the cloud server 6 can be viewed on the PC terminal 4 and the mobile terminal 5. Upon receiving the measurement data from the receiver 3, the cloud server 6 transmits a notification to the PC terminal 4 and the mobile terminal 5. The operator can recognize that calving of the cow 10 will start soon by the notification from the cloud server 6, and can rush to the site. By assisting the calving of the cow 10 by the operator, calving accidents such as stillbirth and difficult delivery can be reduced. Further, when the temperature data 24B detected by the temperature detection section 22B suddenly decreases or increases, it can be recognized that the cow 10 is in an abnormal situation.

If the microphone 22A does not detect a frequency band of 0.5 to 2 kHz for 10 ms or more within 5 seconds after storing the measurement data (S6: NO), the control unit 21 changes the frequency from time t4 to The sound data 24A up to t4 is stored in the storage unit 24 without being transmitted to the cloud server 6. In this embodiment, the communication unit 26 takes 5 seconds to determine whether transmission is possible, but the time is not limited to this and any value can be set.

The control unit 21 determines whether a predetermined time has elapsed since the control unit 21 was activated by the timer 21A (S8). In this embodiment, the predetermined time is set to 60 seconds. If 60 seconds have not elapsed since the start of the control unit 21, the control unit 21 again determines whether the frequency band of the microphone 22A is the frequency band for starting storage in the storage unit 24. (S4).

9 and 10 show the detection results of the microphone 22A before and after calving the cow 10 and when licking the born calf. The sampling frequency of the microphone 22A is set to 24 kHz. FIG. 9 shows the waveform of the sound detected by the microphone 22A after FIG. 7 and the spectrogram of the sound detected by the microphone 22A. FIG. 10 is an enlarged waveform and spectrogram near time t7 in FIG.

If the microphone 22A again detects a frequency band of 0.5 to 2 kHz for 10ms or more (S4: YES, t7 in FIG. 6), the sound detected by the microphone 22A is stored in the storage unit 24 as sound data 24A. The temperature is stored for 10 seconds, and the temperature detected by the temperature detection section 22B is also stored in the storage section 24 for 10 seconds as temperature data 24B (S5). As shown in FIG. 9, when the cow 10 gives birth to a calf (t7), recording to the storage unit 24 is started. In detail, as shown in FIG. 10, when the cow 10 detects the sound of giving birth to a calf at time t7', recording into the storage unit 24 is started, and immediately after that, from time t7'' onwards, the sound of licking the calf continues. is detected by the microphone 22A.

When the storage of the measurement data in the storage unit 24 is completed (t8 in FIGS. 6 and 9), the control unit 21 determines whether or not to transmit the measurement data to the outside (S6). Similarly to time t6, whether or not the measured data can be transmitted is determined based on whether the microphone 22A detects the sound of the cow 10 at a specific frequency within 5 seconds after the measured data is stored. Since the cow 10 licks the calf after giving birth, the sound in this frequency band is detected. In this embodiment, the frequency band is 0.5 to 2 kHz, and if this state continues for 10 ms or more (S6: YES), the control unit 21 transmits the measured data from time t7 to time t8 stored in S5 through communication. The information is wirelessly transmitted to the cloud server 6 via the unit 26 (S7, t9 in FIGS. 6 and 7). The operator can recognize that calving has been successfully completed by listening to the sound data 24A on the cloud server 6 using the mobile terminal 5 and detecting the sound of the calf licking.

If the microphone 22A does not detect a frequency band of 0.5 to 2 kHz for 10 ms or more within 5 seconds after storing the measurement data (S6: NO), the control unit 21 changes the frequency from time t7 to The sound data 24A up to t8 is stored in the storage unit 24 without being transmitted to the cloud server 6.

The control unit 21 determines whether a predetermined time has elapsed since the control unit 21 was activated by the timer 21A (S8). If 60 seconds have passed since the activation of the control unit 21 (S8: YES), it is determined that the predetermined time has elapsed, the sensor device 2 switches from the measurement mode to the deep sleep mode, and the power supply unit 23 supplies power to all elements. The power supply is cut off (S10).

According to such a configuration, since recording of sound starts when the frequency detected by the microphone 22A satisfies a predetermined condition, it is possible to record only the sound data 24A for a necessary period, thereby suppressing power consumption. Can be done. Furthermore, since the sound data 24A has a large capacity, if the sound data 24A is stored for a long time, there is a possibility that the capacity of the storage section 24 will become full. However, according to the present invention, since only the minimum necessary sound data 24A can be acquired, the capacity of the storage section 24 is not overwhelmed. This makes it possible to collect only the really necessary sound data 24A. Furthermore, since the microphone 22A can record sounds around the sensor device 2, it is possible to more accurately grasp the surrounding situation compared to conventional data such as temperature and humidity. In addition, in order to transmit various data stored in the storage unit 24 by the communication unit 26 to the cloud server 6, the situation around the sensor device 2 can be grasped from a remote location by operating the PC terminal 4 and the mobile terminal 5. can do.

According to such a configuration, power is supplied to the microphone 22A when the detection result of the activation sensor 25 satisfies a predetermined condition, so the microphone 22A is activated only when it is necessary to acquire the sound data 24A. Thereby, the power consumption of the sensor device 2 can be further reduced. Moreover, since power is supplied to the control unit 21 when the detection result of the activation sensor 25 satisfies a predetermined condition, the control unit 21 is activated only when necessary. Thereby, the power consumption of the sensor device 2 can be further reduced.

According to such a configuration, when the detection result of the activation sensor 25 satisfies a predetermined condition, power is supplied to the temperature detection unit 22B and starts temperature detection, so that the power consumption of the sensor device 2 is further reduced. Reductions can be made. Furthermore, compared to conventional sensor devices in which the temperature detection section 22B periodically detects temperature at predetermined intervals, the temperature information required to start temperature detection when a predetermined condition is met can be transmitted using the minimum amount of power. Can be collected by consumption. Furthermore, since the communication unit 26 transmits measurement data to the cloud server 6 when the sound data 24A detected by the microphone 22A satisfies a predetermined condition, necessary measurement data can be efficiently transmitted to the cloud server 6. . Thereby, the power consumption of the sensor device 2 can be further reduced.

According to such a configuration, the control unit 21 stops the timer 21A after a predetermined period of time has elapsed from the start of storing measurement data based on the measurement, so power consumption can be minimized and only necessary measurement data can be efficiently stored. can be collected. Moreover, since the power supply to the control unit 21 and the microphone 22A is cut off at the same time, power consumption during the standby state can be suppressed.

Next, a second embodiment of the present invention will be described with reference to FIG. 11. Components that are the same as those in the embodiment described above are given the same reference numerals and descriptions thereof will be omitted.

As shown in FIG. 11, the sensor device according to the second embodiment is in the measurement mode in the initial state (S11), and power is constantly supplied from the power supply section 23 to the control section 21 and the measurement sensor 22d. There is. Similar to the first embodiment, when the microphone 22A continuously detects audio in a predetermined frequency band for 10 ms or more (S4: YES), storage of the sound data 24A and temperature data 24B in the storage unit 24 is started. (S5).

If the microphone 22A continuously detects audio in a predetermined frequency band for 10 ms or more within 5 seconds after storing the measurement data (S6: YES), the control unit 21 wirelessly transmits the stored sound data 24A to the cloud server 6. Then, it is determined whether a specific frequency is detected again (S4).

According to such a configuration, since the control unit 21 and the measurement sensor 22 are in the measurement mode that is always active, it is possible to reduce the omission of collection of the sound data 24A of the cow 10. Further, since the control unit 21 starts storing the sound data in the storage unit 24 upon detection of audio in a predetermined frequency band, it is possible to collect only the necessary sound data 24A, which reduces the storage capacity of the storage unit 24. can be suppressed.

Next, a third embodiment of the present invention will be described with reference to FIG. 12. Components that are the same as those in the embodiment described above are given the same reference numerals and descriptions thereof will be omitted.

As shown in FIG. 12, in the sensor device according to the third embodiment, when the microphone 22A continuously detects audio in a predetermined frequency band for 10 ms or more (S4: YES), the sound data 24A is transferred to the storage unit 24. Memory begins (S5). When the predetermined time has elapsed (S8: YES), the control unit 21 wirelessly transmits the sound data 24A stored in S5 to the cloud server 6 (S7), and enters deep sleep mode (S9).

According to such a configuration, all of the sound data 24A stored in the storage unit 24 is transmitted to the cloud server 6, thereby avoiding a situation where necessary sound data 24A remains stored in the storage unit 24 and is not utilized. be able to. At this time, it is desirable that the cloud server 6 sends a predetermined notification to the PC terminal 4 and the mobile terminal 5.

Next, a fourth embodiment of the present invention will be described with reference to FIG. 13. Components that are the same as those in the above-described embodiment are given the same reference numerals and description thereof will be omitted.

The main body 2A of the sensor device 2 is housed in a waterproof casing 120, and the sensor unit 2B is exposed to the outside of the casing 120 via a cable 2C. The casing 120 includes a pair of arm portions 120A and a hook 120B. Since the sensor unit 2B is exposed to the outside of the casing 120, data can be collected at a desired position.

The casing 120 is removably fixed to a pillar of a cowshed, a hose, or the like by holding a pair of arm portions 120A with hooks 120B. Although the sensor unit 2B is exposed to the outside of the casing 120 via the cable 2C, it may be housed inside the casing 120.

According to such a configuration, since the pair of arm portions 20A and the hook 20B are provided on the casing 120, the casing 120 can be installed at a desired location. Furthermore, since the sensor unit 2B is exposed from the casing 120, the sensor can be placed where it is desired to detect sound or temperature.

Next, a fifth embodiment of the present invention will be described with reference to FIG. 14. Components that are the same as those in the above-described embodiment are given the same reference numerals and description thereof will be omitted. The sensor device 202 of the fifth implementation is buried underground 200 to detect measurement data.

The sensor device 202 is housed in a waterproof casing 220 that is inserted into the ground 200. The casing 220 includes a lid part 221 exposed on the ground surface, a buried part 222 buried in the ground 200 and housing the main body part 2A, and a rod-shaped part buried in the ground 200 and housing the sensor unit 2B and the cable 2C. and a rod portion 223.

A power supply section 230, which is a solar panel, is provided on the top surface of the lid section 221, and the sensor device 202 is driven by sunlight. A cable 2C is inserted through the rod portion 223, and a sensor unit 2B is arranged near the tip.

According to such a configuration, since the sensor device 202 is driven by the solar panel, there is no need to replace the battery, and measurement data can be continuously collected. Furthermore, by detecting earth tremors, ground rumbling, etc. with the sensor device 2, landslides, landslides, avalanches, etc. can be predicted in advance.

Next, a sixth embodiment of the present invention will be described with reference to FIG. 15. Components that are the same as those in the above-described embodiment are given the same reference numerals and description thereof will be omitted. The sensor device 302 according to the sixth embodiment manages water quality by floating on the water surface 300 in an aquarium for aquaculture or ornamental purposes.

The sensor device 302 is housed in a waterproof casing 320 that floats on the water surface 300. The casing 320 includes a lid part 321 exposed on the ground surface, a floating part 322 that has buoyancy and stores the main body part 2A, and a rod-shaped rod part 323 that sinks into the water and stores the sensor unit 2B and cable 2C. , consists of.

A power supply section 330, which is a solar panel, is provided on the top surface of the lid section 321, and the sensor device 302 is driven by sunlight. The cable 2C is inserted through the rod portion 323, and the sensor unit 2B is arranged near the tip.

According to such a configuration, since the sensor device 302 is driven by the solar panel, there is no need to replace the battery, and measurement data can be continuously collected. Furthermore, by detecting water temperature, salinity concentration, etc. with the sensor device 202, it is possible to manage the health of aquaculture and ornamental fish.

The sensor device and sensor system according to the present invention are not limited to the embodiments described above, and various modifications can be made within the scope of the gist of the invention described in the claims.

In the embodiment described above, the measurement sensor 22 can measure at least one of temperature, humidity, illuminance, atmospheric pressure, CO2 concentration, methane gas concentration, and wind power, but the measurement sensor 22 is not limited to this. For example, a 9-axis gyro sensor, a vibration sensor, a touch sensor using a capacitive sensor, a magnetic sensor, a pyroelectric sensor, an ultrasonic sensor, etc. can be used. If the animal to be managed is a fish, the water temperature may be detected by a temperature sensor, the water level may be detected by an atmospheric pressure sensor, and the direction of movement may be detected by detecting geomagnetism with a 9-axis sensor. Furthermore, if the target is an animal living in the soil, the amount of moisture in the soil can be detected using a humidity sensor.

1 Sensor system 2, 102, 202, 302 Sensor device 3 Receiver 4 PC terminal 5 Mobile terminal 6 Cloud server 21 Control section 21A Timer 22 Measurement sensor 22A Microphone 22B Temperature detection section 23, 223, 330 Power supply section 24 Storage section 25 Start sensor 26 communication section

Claims (3)

A sensor device for detecting the condition of the livestock that is detachably attached to the livestock, the sensor device comprising:
a power supply unit that supplies power;
a control unit operated by the power supplied from the power supply unit;
a microphone that operates with the power supplied from the power supply unit and detects surrounding sounds;
a storage unit that stores sound data detected by the microphone;
a communication unit that operates with the power supplied from the power supply unit and transmits the sound data stored in the storage unit to an external device by wireless communication,
The control unit starts storing the sound detected by the microphone in the storage unit when the sound data detected by the microphone satisfies a predetermined condition,
When the sound data detected by the microphone satisfies the predetermined condition within a predetermined time after the storage of the sound data into the storage unit by the control unit is completed, the communication unit transmits the sound data stored in the storage unit. transmitting sound data to the external device;
The communication unit stores the sound data in the storage unit when the sound data detected by the microphone does not satisfy the predetermined condition within the predetermined time after the storage in the storage unit by the control unit is completed. A sensor device characterized by not transmitting the sound data to the external device. It further has an activation sensor that detects changes in the surroundings,
When the detection result of the activation sensor satisfies a predetermined condition, the power is supplied to the microphone from the power supply unit to start detecting the voice, and the power is supplied to the control unit from the power supply unit. Sensor device according to claim 1, characterized in that it is powered and activated. further comprising a temperature detection unit that operates with the power supplied from the power supply unit and detects ambient temperature;
When the detection result of the activation sensor satisfies the predetermined condition, the power is supplied to the temperature detection unit from the power supply unit to start detecting the temperature and store temperature data in the storage unit,
The sensor device according to claim 2, wherein the communication unit transmits the sound data and the temperature data to the external device when the sound data detected by the microphone satisfies a predetermined condition.

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