CN107688173B - Water heater with reminding function - Google Patents
Water heater with reminding function Download PDFInfo
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- CN107688173B CN107688173B CN201610634714.7A CN201610634714A CN107688173B CN 107688173 B CN107688173 B CN 107688173B CN 201610634714 A CN201610634714 A CN 201610634714A CN 107688173 B CN107688173 B CN 107688173B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 claims abstract description 64
- 238000012790 confirmation Methods 0.000 claims abstract description 18
- 238000012545 processing Methods 0.000 claims description 6
- 230000003287 optical effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007954 hypoxia Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/12—Systems for determining distance or velocity not using reflection or reradiation using electromagnetic waves other than radio waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S11/00—Systems for determining distance or velocity not using reflection or reradiation
- G01S11/14—Systems for determining distance or velocity not using reflection or reradiation using ultrasonic, sonic, or infrasonic waves
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- Engineering & Computer Science (AREA)
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- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Electromagnetism (AREA)
- Emergency Alarm Devices (AREA)
Abstract
The invention belongs to the related field of water heaters, and discloses a water heater with a reminding function, which comprises at least two groups of first detection devices arranged along the vertical direction, wherein each first detection device comprises a signal emitter and a signal receiver arranged opposite to the signal emitter, and the signal receiver generates a confirmation receiving signal when receiving a signal emitted by the signal emitter; when a user is positioned between the signal transmitter and the signal receiver, the signal receiver cannot receive the signal transmitted by the signal transmitter; and the controller is connected with the signal receivers of each group of first detection devices and is used for acquiring the confirmation receiving signals sent by each signal receiver and judging whether the user falls down according to the acquired confirmation receiving signals. Through above-mentioned first detection device, can in time monitor and remind when the user falls down, avoid causing great loss and even life danger to appear in the user.
Description
Technical Field
The invention relates to the related technical field of water heaters, in particular to a water heater with a reminding function.
Background
At present, the schemes such as a missing report plug and an electricity-proof wall are concentrated in providing a bath electricity environment which is safe enough for users, but the users have other dangerous situations except for electric safety in the bath process, and finally, the users can be possibly also brought with larger losses and even dangers, and the users can fall down suddenly due to the conditions such as severe sudden illness or choking and hypoxia during bath after tracking statistics, so that the existing water heater can not monitor and remind in time, and causes the users to have larger losses and even life dangers, therefore, the water heater which can help the users to timely inform the outside to rescue after falling down during bath is needed.
Disclosure of Invention
The invention aims to provide a water heater with a reminding function, which aims to solve the problem that the existing water heater cannot monitor and remind a user to fall down in bath in time.
To achieve the purpose, the invention adopts the following technical scheme:
a water heater with a reminder function, comprising:
the first detection devices comprise signal transmitters and signal receivers which are arranged opposite to the signal transmitters, and the signal receivers generate confirmation receiving signals when receiving signals transmitted by the signal transmitters; when a user is positioned between a signal transmitter and a signal receiver, the signal receiver cannot receive a signal transmitted by the signal transmitter;
and the controller is connected with the signal receivers of each group of first detection devices and is used for acquiring the confirmation receiving signals sent by each signal receiver and judging whether the user falls down according to the acquired confirmation receiving signals.
Preferably, the signal transmitter is an optical transmitter, and the signal receiver is an optical receiver.
Preferably, the first detection devices are arranged in three groups and are vertically arranged on the wall body from top to bottom, the distances from the three groups of the first detection devices to the ground are L1, L2 and L3 respectively, and the L1 is more than L2 and more than L3.
Preferably, L1 is 80-120 cm, L2 is 40-60 cm, and L3 is 10-20 cm.
Preferably, the device further comprises a second detection device, the second detection device comprises:
the wearable sensing device is worn on a user and is used for periodically transmitting signals;
the system comprises at least two signal receiving modules, a first signal processing module, a second signal processing module and a third signal processing module, wherein the at least two signal receiving modules are fixedly arranged on a water heater or a wall body and are used for receiving signals transmitted by wearable sensing equipment and generating distance information between the wearable sensing equipment and the signal receiving modules according to the signals;
the controller is used for acquiring the distance information generated by the at least two signal receiving modules and judging whether the user falls down or not according to the distance information.
Preferably, the wearable sensing device includes:
the wearing equipment is arranged at a position above the waist of the user;
the signal transmitting module is positioned in the wearable device and is used for periodically transmitting signals to the signal receiving module.
Preferably, the signal transmitting module comprises an ultrasonic transmitter and a timing signal transmitter, and the ultrasonic transmitter and the timing signal transmitter synchronously and periodically transmit ultrasonic waves and timing signals;
the signal receiving module comprises an ultrasonic receiver and a timing signal receiver, the timing signal receiver is used for receiving ultrasonic waves and timing signals respectively, the time of receiving the timing signals by the timing signal receiver is earlier than the time of receiving the ultrasonic waves by the ultrasonic receiver, and the ultrasonic receiver is provided with a timing module.
Preferably, the controller is configured to:
calculating the height of the wearable sensing equipment from the ground for the first time according to the first distance information generated by the at least two signal receiving modules;
calculating the height of the wearable sensing equipment from the ground after the first time according to the distance information generated by the at least two signal receiving modules after the first time;
judging whether a user falls according to the difference value between the height of the wearable sensing device from the ground for the first time and the height of the wearable sensing device from the ground after the first time.
Preferably, the system further comprises an alarm module, wherein the alarm module is used for controlling the alarm by the controller when the controller judges that the user falls down.
According to the invention, by arranging at least two groups of first detection devices, whether a user falls down or not can be judged according to the confirmation receiving signals sent by the signal receivers of the first detection devices of each group, and an alarm is given through the alarm module. The user can monitor and remind in time when falling down, and the occurrence of large loss and even life danger of the user are avoided.
And through further setting up second detection device, judge whether the user falls down according to the distance information between wearing formula sensing device and the signal receiving module that signal receiving module generated by the controller, can further perfect first detection device's judgement result, improve the accuracy of judgement.
Drawings
FIG. 1 is a schematic view of a first embodiment of the present invention;
FIG. 2 is a block diagram showing a first detecting device according to a first embodiment of the present invention connected to a controller;
FIG. 3 is a schematic diagram of a second embodiment of the present invention;
FIG. 4 is a block diagram showing a second detecting device according to a second embodiment of the present invention connected to a controller;
fig. 5 is a block diagram of a signal transmitting module of a second detecting device according to the second embodiment of the present invention;
fig. 6 is a block diagram of a signal receiving module of a second detecting device according to the second embodiment of the present invention.
In the figure:
1. a first detection device; 11. a signal transmitter; 12. a signal receiver;
2. a second detection device; 21. a wearable sensing device; 211. a wearable device; 212. a signal transmitting module; 2121. an ultrasonic emitter; 2122. a timing signal transmitter; 22. a signal receiving module; 221. an ultrasonic receiver; 222. a timing signal receiver;
3. and a controller.
Detailed Description
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
Embodiment one:
the embodiment provides a water heater with reminding function, as shown in fig. 1, the water heater comprises at least two groups of first detection devices 1 arranged along the vertical direction, and the first detection devices are used for detecting whether a user falls down during bathing. Specifically, referring to fig. 2, the first detecting device 1 includes a signal transmitter 11 and a signal receiver 12 disposed opposite to the signal transmitter 11, and the signal receiver 12 receives the signal transmitted by the signal transmitter 11 and generates a confirmation reception signal; specifically, the signal transmitter 11 may be a light transmitter, and is disposed on a wall of the bathroom, and the corresponding signal receiver 12 is a light receiver, and is disposed on a wall opposite to the wall where the light transmitter is disposed. The optical transmitter emits an optical signal and is received by the optical receiver. When a user is located between the signal transmitter 11 and the signal receiver 12, the signal receiver 12 does not receive the signal transmitted by the signal transmitter 11.
The water heater further comprises a controller 3 connected to the signal receivers 12 of each group of the first detecting devices 1, for acquiring the confirmation receiving signals transmitted from each signal receiver 12, and judging whether the user falls according to the acquired confirmation receiving signals. In this embodiment, the controller 3 may be integrated with a control system of the water heater, or may be separately disposed on a wall, a water heater housing, or other carriers, specifically according to the needs of the user.
In this embodiment, preferably, the first detecting devices 1 are arranged in three groups, and are vertically arranged on the wall of the bathroom from top to bottom, the distances from the three groups of first detecting devices 1 to the ground are L1, L2 and L3, respectively, wherein L1 > L2 > L3, and the values of the distances L1, L2 and L3 can be set according to the heights of different users, for example, the distance L1 is set to 80-120 cm, the distance L2 is set to 40-60 cm, and the distance L3 is set to 10-20 cm according to the heights of certain users. By the distance setting of the three sets of first detecting devices 1, the positions of the upper, middle and lower parts of the body of the user can be corresponded, for example, the uppermost set of first detecting devices 1 corresponds to the chest position of the body of the user, the middle set of first detecting devices 1 corresponds to the waist position of the user, and the lowermost set of first detecting devices 1 corresponds to the foot position of the user.
The water heater of the present embodiment further includes an alarm module (not shown in the figure) for controlling an alarm by the controller 3 when the controller 3 determines that the user falls. More preferably, the embodiment may further be provided with a remote communication system, that is, when the alarm module alarms, the controller 3 may transmit the user fall information to remote devices such as a mobile phone and a tablet computer, and timely notify the relatives of the user, so as to avoid the loss of the user and even the life danger.
The operation of this embodiment is described below:
when the three sets of first detection devices 1 of this embodiment are used, firstly, the first detection device 1 closest to the ground (i.e. the first detection device 1 with a distance L3 from the ground) is used to determine whether a user enters the bathroom, and as long as the user enters the light emitting range of the signal emitter 11, the light emitted by the signal emitter 11 will be blocked, at this time, the signal receiver 12 will not receive the light, no confirmation receiving signal will be generated, and the controller 3 will not acquire the confirmation receiving signal, so that it is proved that the user enters the bathroom.
When the user is confirmed to enter the bathroom, if the controller 3 continuously acquires the confirmation receiving signals of the signal receivers 12 of the first detection devices 1 closest to the ground three times (namely, the light rays emitted by the signal emitters 11 are blocked), and can acquire the confirmation receiving signals of the signal receivers 12 of the two groups of first detection devices 1 with the ground distances L1 and L2 (the light rays emitted by the signal emitters 11 are not blocked), the user is indicated to fall down, and at the moment, the controller 3 controls the alarm module to alarm so as to remind relatives of the user to rescue in time, and loss and even life danger of the user are avoided.
If the signal receivers 12 of the three groups of first detection devices 1 can send a confirmation receiving signal to the controller 3, no shielding object is proved between the signal transmitters 11 and the signal receivers 12 of the three groups of first detection devices 1, namely, the user is informed to leave the bathroom.
According to the three-group first detection device 1, whether a user falls down or not during bath can be rapidly confirmed, and an alarm is given in time, so that timely monitoring and reminding of the user when the user falls down are achieved. It should be noted that, the first detection device 1 of the present embodiment is not limited to three groups, but may be more than three groups, that is, may be more densely arranged, which is beneficial to improving the accuracy of monitoring and judging.
Embodiment two:
considering that the first detection device 1 in the first embodiment may have a fault in judgment during the monitoring, the second detection device 2 is further added on the basis of the first embodiment, and the second detection device 2 can also judge whether the user falls down, so that the judgment result of the first detection device 1 is integrated at this time, and whether the user falls down can be more accurately judged.
Specifically, as shown in fig. 3 and 4, the second detection apparatus 2 of the present embodiment includes a wearable sensing device 21 and at least two signal receiving modules 222, where:
the wearable sensing device 21 comprises a wearable device 211 and a signal transmitting module 212, the wearable device 211 is worn by a user when the user takes a bath, and the wearable device 211 is arranged at a position above the waist of the user, so that the user can move along with the wearable device.
The signal transmitting module 212 is located in the wearable device 211 and is used for periodically transmitting signals, in this embodiment, referring to fig. 5, the signal transmitting module 212 includes an ultrasonic transmitter 2121 and a timing signal transmitter 2122, where the ultrasonic transmitter 2121 is used for transmitting ultrasonic waves, the timing signal transmitter 2122 is used for transmitting timing signals, and in this embodiment, the timing signals are electromagnetic wave signals, such as optical wave signals, wireless signals or radio frequency signals, etc., and in this embodiment, the ultrasonic transmitter 2121 and the timing signal transmitter 2122 are required to synchronously and periodically transmit ultrasonic waves and timing signals. In this embodiment, the ultrasonic transmitter 2121 and the timing signal transmitter 2122 transmit ultrasonic waves and timing signals, respectively, every 5 seconds.
The signal receiving modules 22 are fixedly arranged relative to the water heater, and can be arranged on the water heater or on a wall of a bathroom, specifically, in this embodiment, the number of the signal receiving modules 22 is at least two, and when the number of the signal receiving modules 22 is two, a connecting line between the two signal receiving modules 22 is arranged vertically or parallel to the ground, and the distance between the signal receiving modules 22 and the signal transmitting module 212 changes along with the movement of a user.
The signal receiving module 22 is configured to receive the signal transmitted by the signal transmitting module 212, generate distance information between the signal transmitting module 212 and the signal receiving module 22 according to the signal, and send the distance information to the controller 3. Specifically, as shown in fig. 6, the signal receiving module 22 includes an ultrasonic receiver 221 and a timing signal receiver 222, where the ultrasonic receiver 221 is disposed corresponding to the ultrasonic transmitter 2121, and is configured to receive the ultrasonic wave emitted by the ultrasonic transmitter 2121. The timing signal receiver 222 is disposed corresponding to the timing signal transmitter 2122 and is configured to receive the timing signal transmitted by the timing signal transmitter. In this embodiment, the timing signal receiver 222 receives the timing signal at a time earlier than the ultrasonic receiver 221 receives the ultrasonic wave, and a timing module (not shown) is provided on the ultrasonic receiver 221 for recording the time taken from when the ultrasonic transmitter 2121 transmits the ultrasonic wave to when the ultrasonic wave is received by the ultrasonic receiver 221. Specifically, when the ultrasonic transmitter 2121 transmits ultrasonic waves, the timing signal transmitter 2122 synchronously transmits the timing signal, and because the characteristic of the timing signal itself is that the propagation speed is 30 ten thousand km/s, which is far greater than the propagation speed of the ultrasonic waves, the propagation time of the timing signal is negligible, that is, the time of the timing signal receiver 222 receiving the optical waves is considered to be equal to the time of the timing signal transmitter 2122 transmitting the optical waves, further when the timing signal receiver 222 receives the timing signal, the timing module on the ultrasonic receiver 221 starts timing, at this time, the ultrasonic transmitter 2121 just transmits the ultrasonic waves, and when the ultrasonic receiver 221 receives the ultrasonic waves, the timing module stops timing, at this time, the distance between the ultrasonic transmitter 2121 and the ultrasonic receiver 221 can be calculated according to the time recorded by the timing module and the speed of the ultrasonic waves, and the ultrasonic receiver 221 generates distance information.
The signal transmitting module 212 and the signal receiving module 22 in this embodiment are not limited to the ultrasonic transmitter 2121 and the timing signal transmitter 2122, and the ultrasonic receiver 221 and the timing signal receiver 222, but may be other schemes capable of calculating the distance between the signal transmitting module 212 and the signal receiving module 22, for example, may be an infrared or photoelectric sensor device for calculating the distance.
The controller 3 is further configured to acquire distance information generated by the signal receiving module 22, specifically, distance information generated by the ultrasonic receiver 221, and then determine whether the user falls according to the distance information. The specific method comprises the following steps:
first, the controller 3 acquires distance information transmitted by at least two ultrasonic receivers 221 for the first time, which is referred to as first distance information, and then acquires distance information transmitted by at least two ultrasonic receivers 221 after the first time, which is referred to as distance information after the first time, and the distance information after the first time transmitted by each ultrasonic receiver 221 may be plural, that is, the ultrasonic receiver 221 transmits the distance information after the first time every certain time, which is transmitted every 5 seconds in this embodiment.
Then, the controller 3 calculates the height of the first wearable sensing device 21 from the ground according to the obtained first distance information, specifically, when the number of the signal receiving modules 22 is two, the connecting line between the two signal receiving modules 22 is perpendicular or parallel to the ground, taking the connecting line perpendicular to the ground as an example, the height of the two signal receiving modules 22 from the ground is known, and the distance between the two signal receiving modules 22 and the signal transmitting module 212 of the wearable sensing device 21 is also measured, at this time, the two signal receiving modules 22 and the signal transmitting module 212 are in a plane perpendicular to the ground, and the two signal receiving modules 22 and the signal transmitting module 212 together form a triangle, and the height of the signal transmitting module 212 from the ground can be calculated through the height of the two signal receiving modules 22 from the ground and the distance between the two signal receiving modules 22 and the signal transmitting module 212.
When the number of the signal receiving modules 22 is more than two, a circle is constructed by taking the position of the signal receiving module 22 as the center of a circle and taking the distance between the signal receiving module 22 and the signal transmitting module 212 as the radius, and at least three circles can be constructed because the number of the signal receiving modules 22 is more than two and are all arranged on the wall, and at the moment, the intersection point of the more than three circles is unique (namely, the position of the signal transmitting module 212 in the embodiment), so that the height of the signal transmitting module 212 can be calculated.
The controller 3 then calculates the height of the wearable sensing device 21 from the ground after the first time according to the acquired distance information after the first time, and the calculation principle is the same as that of the height of the wearable sensing device 21 from the ground after the first time.
Then, whether the user falls is judged according to the difference between the height of the wearable sensing device 21 from the ground for the first time and the height of the wearable sensing device 21 from the ground after the first time, namely, when the difference between the height of the wearable sensing device 21 from the ground for the first time and the height of the wearable sensing device 1 from the ground after the first time is larger than a preset difference, the user can be judged to fall. For example, when the user is in a normal bath, the measured height of the wearable sensing device 21 from the ground is L1 for the first time, then the measurement of the height of the wearable sensing device 21 from the ground after the first time is performed every 5 seconds, the height of the wearable sensing device 1 from the ground after the first time is set to be L2, then the difference between L1 and L2 is calculated, when the user falls, the difference between L1 and L2 is larger than the preset difference, and when the controller 3 continuously measures that the difference between L1 and L2 is larger than the preset difference for more than two times, the user can be judged to fall. In this embodiment, the preset difference may be set to 0.5 m.
The water heater of the invention can independently finish the judgment of whether a user falls through the second detection device 2 of the embodiment, and when the water heater of the embodiment is used, the first detection device 1 or the second detection device 2 can be independently started as required, so that the judgment of whether the user falls can be finished.
More preferably, the present embodiment may further perform the determination of whether the user falls through the combination of the first detection device 1 and the second detection device 2, and specifically, when the controller 3 determines that the user does not fall through both the first detection device 1 and the second detection device 2, the user is in a normal state.
When the controller 3 judges that the user falls through the first detection device 1 and the second detection device 2, at the moment, the two detection devices give the same result, so that the user is proved to fall indeed, the judgment result is more accurate, the misjudgment rate when one of the detection devices is independently used for detection is reduced, and the controller 3 controls the alarm module to alarm to prompt the user to fall.
When the controller 3 judges that the user falls through one of the first detection device 1 and the second detection device 2 and the other detection device judges that the user does not fall, the alarm module does not directly alarm, the first detection device 1 and the second detection device 2 continue to detect, when the detection is repeated, if the judgment results after the controller 3 detects through the first detection device 1 and the second detection device 2 are the same, the controller 3 performs corresponding operation according to the judgment results, if one detection device judges that the user falls, and the other detection device judges that the user does not fall, the controller 3 directly controls the alarm module to alarm in time and confirms by the relatives of the user.
In this embodiment, by providing the second detection device 2, the determination result of the first detection device 1 can be further improved, and the accuracy of the determination result can be improved.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (8)
1. A water heater with reminder function, comprising:
the first detection devices comprise signal transmitters and signal receivers which are arranged opposite to the signal transmitters, and the signal receivers generate confirmation receiving signals when receiving signals transmitted by the signal transmitters; when a user is positioned between a signal transmitter and a signal receiver, the signal receiver cannot receive a signal transmitted by the signal transmitter;
the controller is connected with the signal receivers of each group of first detection devices and is used for acquiring a confirmation receiving signal sent by each signal receiver and judging whether a user falls according to the acquired confirmation receiving signal;
the water heater with the reminding function further comprises a second detection device, and the second detection device comprises:
the wearable sensing device is worn on a user and is used for periodically transmitting signals;
the system comprises at least two signal receiving modules, a first signal processing module, a second signal processing module and a third signal processing module, wherein the at least two signal receiving modules are fixedly arranged on a water heater or a wall body and are used for receiving signals transmitted by wearable sensing equipment and generating distance information between the wearable sensing equipment and the signal receiving modules according to the signals;
the controller is used for acquiring the distance information generated by the at least two signal receiving modules and judging whether a user falls down or not according to the distance information;
the controller is used for judging whether the user falls or not through the combination of the first detection device and the second detection device.
2. The water heater with a reminder function according to claim 1, wherein the signal transmitter is a light emitter and the signal receiver is a light receiver.
3. The water heater with reminding function according to claim 2, wherein the first detection devices are arranged in three groups, the three groups are vertically arranged on the wall body from top to bottom, the distances from the first detection devices to the ground are respectively L1, L2 and L3, and the L1 is more than L2 and more than L3.
4. The water heater with a reminder function according to claim 3, wherein L1 is 80-120 cm, L2 is 40-60 cm, and L3 is 10-20 cm.
5. The water heater with reminder function according to claim 1, wherein the wearable sensing device comprises:
the wearing equipment is arranged at a position above the waist of the user;
the signal transmitting module is positioned in the wearable device and is used for periodically transmitting signals to the signal receiving module.
6. The water heater with a reminding function according to claim 5, wherein the signal emitting module comprises an ultrasonic emitter and a timing signal emitter, and the ultrasonic emitter and the timing signal emitter emit ultrasonic waves and timing signals synchronously and periodically;
the signal receiving module comprises an ultrasonic receiver and a timing signal receiver, the timing signal receiver is used for receiving ultrasonic waves and timing signals respectively, the time of receiving the timing signals by the timing signal receiver is earlier than the time of receiving the ultrasonic waves by the ultrasonic receiver, and the ultrasonic receiver is provided with a timing module.
7. The water heater with reminder function of claim 6, wherein the controller is configured to:
calculating the height of the wearable sensing equipment from the ground for the first time according to the first distance information generated by the at least two signal receiving modules;
calculating the height of the wearable sensing equipment from the ground after the first time according to the distance information generated by the at least two signal receiving modules after the first time;
judging whether a user falls according to the difference value between the height of the wearable sensing device from the ground for the first time and the height of the wearable sensing device from the ground after the first time.
8. The water heater with reminding function according to any one of claims 1-7,
the alarm device also comprises an alarm module, wherein the alarm module is used for controlling alarm by the controller when the controller judges that the user falls down.
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| CN201610634714.7A CN107688173B (en) | 2016-08-04 | 2016-08-04 | Water heater with reminding function |
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| CN201610634714.7A CN107688173B (en) | 2016-08-04 | 2016-08-04 | Water heater with reminding function |
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| CN107688173B true CN107688173B (en) | 2023-12-08 |
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| CN110609254B (en) * | 2018-06-15 | 2022-09-27 | 富士通株式会社 | Action detection method and device based on wireless signals and electronic equipment |
| CN110176126A (en) * | 2019-06-03 | 2019-08-27 | 珠海格力电器股份有限公司 | A kind of human body fall monitoring device and method |
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