CN115862281B - Light curtain barrier type anti-falling alarm prompting system - Google Patents
Light curtain barrier type anti-falling alarm prompting system Download PDFInfo
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- CN115862281B CN115862281B CN202211488236.5A CN202211488236A CN115862281B CN 115862281 B CN115862281 B CN 115862281B CN 202211488236 A CN202211488236 A CN 202211488236A CN 115862281 B CN115862281 B CN 115862281B
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- light curtain
- control switch
- curtain barrier
- processor
- ultrasonic
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- 230000004888 barrier function Effects 0.000 title claims abstract description 53
- 230000002265 prevention Effects 0.000 claims abstract description 4
- 238000004140 cleaning Methods 0.000 claims description 14
- 230000006698 induction Effects 0.000 claims description 7
- 239000011159 matrix material Substances 0.000 claims description 7
- 238000004891 communication Methods 0.000 claims description 6
- 230000008054 signal transmission Effects 0.000 claims description 6
- 238000001514 detection method Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000000056 organ Anatomy 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/20—Status alarms responsive to moisture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/10—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors
- G01J5/12—Radiation pyrometry, e.g. infrared or optical thermometry using electric radiation detectors using thermoelectric elements, e.g. thermocouples
-
- 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
-
- 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/4802—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00 using analysis of echo signal for target characterisation; Target signature; Target cross-section
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/24—Reminder alarms, e.g. anti-loss alarms
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Electromagnetism (AREA)
- Computer Networks & Wireless Communication (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Emergency Alarm Devices (AREA)
- Accommodation For Nursing Or Treatment Tables (AREA)
Abstract
The invention relates to the technical field of anti-falling alarm. The light curtain barrier type anti-falling alarm prompt system is characterized by comprising a light curtain barrier, wherein the light curtain barrier comprises pyroelectric infrared sensors which are arranged in a rectangular mode, the pyroelectric infrared sensors are connected with a processor, and the processor is connected with an alarm device; the light curtain screen control switch is connected with the processor in a control manner; the light curtain barrier is used as a barrier of the anti-falling area, and once the light curtain barrier senses that a user enters, the alarm device reminds the user of preventing falling. When the region where the light curtain barrier is located is subjected to operations such as mopping, the light curtain barrier control switch controls the light curtain barrier to be opened, and the patient is reminded of falling prevention. The anti-falling reminding of the user is convenient to realize, and the layout is convenient.
Description
The scheme belongs to the divisional application of the application number 202111134749.1, the application date 2021, 09 and 27, and the name of the anti-falling alarm prompt system.
Technical Field
The invention relates to the technical field of alarm, in particular to an anti-falling alarm prompting system.
Background
In order to ensure the safety of public places, the ground is often cleaned regularly. However, the cleaned water trace is not easy to be dried quickly, and if the user walks quickly, the user is easy to fall down. For places such as hospitals, many people live in the middle of the year, and once the people fall down, the people are not easy to recover, and long recovery time is needed.
The chinese patent with publication number CN201921894133.2 discloses a bathroom anti-fall protection device, including connecting seat and base, one side fixed mounting at connecting seat top has the switch, one side that the switch was kept away from at connecting seat top is equipped with first installation cavity, the inside fixed mounting in first installation cavity has bee calling organ, the front of connecting seat is equipped with the third installation cavity, the inside fixed mounting in third installation cavity has the lamp area. The lamp area that this protection device that falls down is in the lowest department in bathroom is prevented to bathroom, be close to ground, open the lamp area when water droplet sensor detects that the base has ponding, the light that the lamp area produced is close to ground, can let the user clearly see the base ponding condition, avoid the misjudgement to ground condition and lead to carelessly slipping, the atress area in the slipmat changes and judges whether falls down and the decision-making mode that vibration sensor assisted judgement can very big degree reduce the emergence of false alarm condition, the device is simple and convenient to use, be applicable to various bathrooms, slipmat and alarm module are with opening at will.
The above patent requires a water drop sensor for detection, which is inconvenient for realizing a large-scale detection. For the large scale humidity detection time, if the humidity sensor is added, the cost is larger, the ceramic tile needs to be paved again, and the process is more complicated.
Disclosure of Invention
Aiming at the problems existing in the prior art, the invention provides a light curtain barrier type anti-falling alarm prompting system, so as to solve at least one technical problem.
In order to achieve the above purpose, the invention provides a light curtain barrier type anti-falling alarm prompt system which is characterized by comprising a light curtain barrier, wherein the light curtain barrier comprises pyroelectric infrared sensors which are arranged in a rectangular shape, the pyroelectric infrared sensors are connected with a processor, and the processor is connected with an alarm device;
The light curtain screen control switch is connected with the processor in a control manner;
The light curtain barrier is used as a barrier of the anti-falling area, and once the light curtain barrier senses that a user enters, the alarm device reminds the user of preventing falling.
When the region where the light curtain barrier is located is subjected to operations such as mopping, the light curtain barrier control switch controls the light curtain barrier to be opened, and the patient is reminded of falling prevention.
Further preferably, the infrared light curtain shielding device further comprises infrared emission devices which are arranged in a matrix manner and are positioned in the light curtain shielding device, and the infrared emission devices are adjacently provided with infrared receiving devices;
the infrared receiving device receives reflected light of infrared light emitted by the infrared emitting device, the infrared receiving device transmits the received signal to the processor, and the processor generates a reflection intensity distribution picture according to different reflection degrees of the ground to the infrared light;
the device also comprises a projection device, wherein the projection device projects the reflection intensity distribution picture downwards.
For tiles of uniform dryness, the intensity of reflection of infrared light is uniform. Once there is water stain after mopping, the emission intensity will change. This patent carries out the projection through the different reflection conditions on the ground that will gather projection arrangement, and the user of being convenient for learn the humidity condition in different regions.
Further preferably, the infrared emission devices arranged in at least twenty matrixes are an induction unit;
All infrared emission devices of the same sensing unit are controlled by the same control switch, and the control switch is positioned on a connection line between the infrared emission devices of the sensing units and a power supply;
The control switch is positioned on a connection line between the projection device and the power supply;
The control switch is linked with the light curtain barrier control switch.
The infrared emission device and the projection device in the same area are convenient to realize centralized control. Once cleaning personnel drag the floor of the area where the sensing unit is located, the control switch can be started to detect and visually display.
Further preferably, the control switch is also linked with a button for indicating that the floor is being pulled, the button giving a signal to the processor, the processor setting the current time as the fall-off period;
once the processor is set to be in the fall-off period, the light curtain barrier is in an on state within 10 minutes from the set point in time.
Avoiding human error entering the area just mopped.
Further preferably, the projection device comprises colored laser lamps arranged in a matrix, and each infrared emission device is adjacently provided with one colored laser lamp.
Further preferably, the ultrasonic wave detection device further comprises an ultrasonic wave signal transmission bracelet;
the ultrasonic signal transmitting bracelet is used for transmitting ultrasonic signals, and the ultrasonic recognition device recognizes the signals transmitted by the ultrasonic signal transmitting device;
The ultrasonic signal transmitted by the ultrasonic signal transmitting bracelet comprises personnel information, and the personnel information comprises at least one of medical staff, cleaning staff and patients;
When the ultrasonic recognition device recognizes that the cleaning staff is in the same sensing unit area for more than 1 minute, the ultrasonic recognition device sends a signal to the control switch, so that the control switch is automatically turned on.
The problem that the cleaning personnel forget to manually turn on the control switch is avoided.
Further preferably, the ultrasonic wave detection device further comprises an ultrasonic wave signal transmission bracelet;
the ultrasonic signal transmitting bracelet is used for transmitting ultrasonic signals, and the ultrasonic recognition device recognizes the signals transmitted by the ultrasonic signal transmitting device;
The ultrasonic signal transmitted by the ultrasonic signal transmitting bracelet comprises personnel information, and the personnel information comprises at least one of medical staff, cleaning staff and patients;
the ultrasonic recognition device is arranged in the central area of the induction unit;
The ultrasonic recognition device converts the sensed ultrasonic signals into electric signals and transmits the electric signals to the processor, and the processor analyzes and obtains the motion trail of the personnel carrying the ultrasonic signal transmitting bracelet;
Once the processor analyzes that the movement time of the cleaning staff in a certain sensing unit exceeds 1 minute, the processor can transmit an alarm signal to the ultrasonic signal transmitting bracelet within a set range in ten minutes, and any user carrying the ultrasonic signal transmitting bracelet can receive an alarm prompt adjacent to the easy-to-fall area in the peripheral area of the sensing unit.
Further preferably, the ultrasonic signal-emitting bracelet is mounted on the mop.
Once the mop with the ultrasonic signal transmitting bracelet is in the range of the sensing unit, the current ground can be known to be in mopping.
Further preferably, the peripheral area of the sensing unit means within 1 meter of the periphery of the sensing unit.
Further preferably, the alarm prompt is a voice prompt or a light prompt.
Drawings
Fig. 1 is a schematic view of a partial structure of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Referring to fig. 1, the light curtain barrier type anti-falling alarm prompt system comprises a light curtain barrier, wherein the light curtain barrier comprises pyroelectric infrared sensors 1 which are arranged in a rectangular shape, the pyroelectric infrared sensors 1 are connected with a processor, and the processor is connected with an alarm device; the light curtain screen control switch is used for controlling the light curtain screen switch and is in control connection with the processor; the light curtain barrier is used as a barrier of the anti-falling area, and once the light curtain barrier senses that a user enters, the alarm device reminds the user of preventing falling. When the region where the light curtain barrier is located is subjected to operations such as mopping, the light curtain barrier control switch controls the light curtain barrier to be opened, and the patient is reminded of falling prevention.
The infrared emission device 2 is arranged in a matrix manner and positioned in the light curtain barrier, and the infrared emission device 2 is adjacently provided with an infrared receiving device 3; the infrared receiving device 3 receives the reflected light of the infrared light emitted by the infrared emitting device, the infrared receiving device transmits the received signal to the processor, and the processor generates a reflected intensity distribution picture according to different reflection degrees of the ground to the infrared light; the device also comprises a projection device, and the projection device projects the reflected intensity distribution picture downwards. For tiles of uniform dryness, the intensity of reflection of infrared light is uniform. Once there is water stain after mopping, the emission intensity will change. This patent carries out the projection through the different reflection conditions on the ground that will gather projection arrangement, and the user of being convenient for learn the humidity condition in different regions.
At least twenty infrared emitting devices which are arranged in a matrix form are used as an induction unit; all infrared emission devices of the same induction unit are controlled by the same control switch, and the control switch is positioned on a connection line between the infrared emission devices of the induction unit and a power supply; and the control switch is positioned on the connection line between the projection device and the power supply. The control switch is linked with the light curtain barrier control switch. The infrared emission device and the projection device in the same area are convenient to realize centralized control. Once cleaning personnel drag the floor of the area where the sensing unit is located, the control switch can be started to detect and visually display.
The control switch is also linked with a button for indicating that the floor is being dragged, the button gives a signal to the processor, and the processor sets the current moment as the easy-falling period; once the processor is set to be in the fall-off period, the light curtain barrier is in an on state within 10 minutes from the set point in time. Avoiding human error entering the area just mopped.
The projection device comprises colored laser lamps which are arranged in a matrix manner, and each infrared emission device is adjacently provided with one colored laser lamp.
The ultrasonic signal transmission device also comprises an ultrasonic identification device and an ultrasonic signal transmission bracelet; the ultrasonic signal transmitting bracelet is used for transmitting ultrasonic signals, and the ultrasonic recognition device recognizes the signals transmitted by the ultrasonic signal transmitting device; the ultrasonic signal transmitted by the ultrasonic signal transmitting bracelet comprises personnel information, and the personnel information comprises at least one of medical staff, cleaning staff and patients; when the ultrasonic recognition device recognizes that the cleaning personnel are in the same sensing unit area for more than 1 minute, the ultrasonic recognition device sends signals to the processor, and the processor controls the control switch to realize automatic opening of the control switch. The problem that the cleaning personnel forget to manually turn on the control switch is avoided. The ultrasonic recognition device is connected with the processor, and the processor is controlled to be connected with the control switch. The ultrasonic recognition device is provided with a processing module, the processing module is connected with a wireless communication module, the wireless communication module of the ultrasonic recognition device is in wireless communication connection with a control switch, and the control switch is a wireless control switch. The ultrasonic recognition device sends signals to the control switch to realize automatic starting of the control switch.
Or also comprises an ultrasonic recognition device and an ultrasonic signal transmitting bracelet; the ultrasonic signal transmitting bracelet is used for transmitting ultrasonic signals, and the ultrasonic recognition device recognizes the signals transmitted by the ultrasonic signal transmitting device; the ultrasonic signal transmitted by the ultrasonic signal transmitting bracelet comprises personnel information, and the personnel information comprises at least one of medical staff, cleaning staff and patients; the ultrasonic recognition device is arranged in the central area of the induction unit; the ultrasonic recognition device converts the sensed ultrasonic signals into electric signals and transmits the electric signals to the processor, and the processor analyzes and obtains the motion trail of the personnel carrying the ultrasonic signal transmitting bracelet; once the processor analyzes that the movement time of the cleaning personnel in a certain sensing unit exceeds 1 minute, the processor can transmit an alarm signal to the ultrasonic signal transmitting bracelet within a set range in ten minutes, and any user carrying the ultrasonic signal transmitting bracelet can receive an alarm prompt adjacent to the easy-to-fall area in the peripheral area of the sensing unit. The ultrasonic signal transmitting bracelet is arranged on the mop. Once the mop with the ultrasonic signal transmitting bracelet is in the range of the sensing unit, the current ground can be known to be in mopping. The peripheral area of the sensing unit refers to within 1 meter of the periphery of the sensing unit. The alarm prompt is a voice prompt or a light prompt.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (7)
1. The light curtain barrier type anti-falling alarm prompt system is characterized by comprising a light curtain barrier, wherein the light curtain barrier comprises pyroelectric infrared sensors which are arranged in a rectangular mode, the pyroelectric infrared sensors are connected with a processor, and the processor is connected with an alarm device;
The light curtain screen control switch is connected with the processor in a control manner;
the light curtain barrier is used as a barrier of the anti-falling area, and once the light curtain barrier senses that a user enters, the alarm device reminds the user of preventing falling;
the infrared emission device is arranged in a matrix manner and is positioned in the light curtain barrier, and the infrared emission device is adjacently provided with an infrared receiving device;
the infrared receiving device receives reflected light of infrared light emitted by the infrared emitting device, the infrared receiving device transmits the received signal to the processor, and the processor generates a reflection intensity distribution picture according to different reflection degrees of the ground to the infrared light;
The device also comprises a projection device, wherein the projection device projects the reflected intensity distribution picture downwards;
The infrared emission devices which are arranged in at least twenty matrixes are an induction unit;
All infrared emission devices of the same sensing unit are controlled by the same control switch, and the control switch is positioned on a connection line between the infrared emission devices of the sensing units and a power supply;
The control switch is positioned on a connection line between the projection device and the power supply;
the control switch is linked with the light curtain barrier control switch;
the ultrasonic signal transmission device also comprises an ultrasonic identification device and an ultrasonic signal transmission bracelet;
the ultrasonic signal transmitting bracelet is used for transmitting ultrasonic signals, and the ultrasonic recognition device recognizes the signals transmitted by the ultrasonic signal transmitting device;
The ultrasonic signal transmitted by the ultrasonic signal transmitting bracelet comprises personnel information, and the personnel information comprises at least one of medical staff, cleaning staff and patients;
When the ultrasonic recognition device recognizes that the cleaning staff is in the same sensing unit area for more than 1 minute, the ultrasonic recognition device sends a signal to the control switch, so that the control switch is automatically turned on.
2. The light curtain barrier type anti-fall alarm prompting system according to claim 1, wherein: after the region where the light curtain barrier is located is subjected to mopping operation, the light curtain barrier control switch controls the light curtain barrier to be opened, and a patient is reminded of falling prevention.
3. The light curtain barrier type anti-fall alarm prompting system according to claim 1, wherein: the control switch is also linked with a button for indicating that the floor is being pulled, the button gives a signal to the processor, and the processor sets the current moment as an easy-falling period;
once the processor is set to be in the fall-off period, the light curtain barrier is in an on state within 10 minutes from the set point in time.
4. The light curtain barrier type anti-fall alarm prompting system according to claim 1, wherein: the projection device comprises colored laser lamps which are arranged in a matrix mode, and each infrared emission device is provided with one colored laser lamp adjacently.
5. The light curtain barrier type anti-fall alarm prompting system according to claim 1, wherein: the ultrasonic signal transmitting bracelet is arranged on the mop.
6. The light curtain barrier type anti-fall alarm prompting system according to claim 1, wherein: the ultrasonic recognition device is connected with the processor, and the processor is controlled to be connected with the control switch.
7. The light curtain barrier type anti-fall alarm prompting system according to claim 1, wherein: the ultrasonic recognition device is internally provided with a processing module, the processing module is connected with a wireless communication module, the wireless communication module of the ultrasonic recognition device is in wireless communication connection with a control switch, and the control switch is a wireless control switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211488236.5A CN115862281B (en) | 2021-09-27 | 2021-09-27 | Light curtain barrier type anti-falling alarm prompting system |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111134749.1A CN113850974B (en) | 2021-09-27 | 2021-09-27 | Anti-falling alarm prompt system |
| CN202211488236.5A CN115862281B (en) | 2021-09-27 | 2021-09-27 | Light curtain barrier type anti-falling alarm prompting system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111134749.1A Division CN113850974B (en) | 2021-09-27 | 2021-09-27 | Anti-falling alarm prompt system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115862281A CN115862281A (en) | 2023-03-28 |
| CN115862281B true CN115862281B (en) | 2024-06-11 |
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| CN202211488236.5A Active CN115862281B (en) | 2021-09-27 | 2021-09-27 | Light curtain barrier type anti-falling alarm prompting system |
| CN202111134749.1A Active CN113850974B (en) | 2021-09-27 | 2021-09-27 | Anti-falling alarm prompt system |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111134749.1A Active CN113850974B (en) | 2021-09-27 | 2021-09-27 | Anti-falling alarm prompt system |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219876A (en) * | 1995-02-15 | 1996-08-30 | Nec Corp | Noncontact type liquid detecting method and detecting apparatus |
| TWM532620U (en) * | 2016-06-30 | 2016-11-21 | Univ Vanung | Wet slippery ground detection device with sound and light warning function |
| CN107342031A (en) * | 2017-05-19 | 2017-11-10 | 上海悉德信息科技有限公司 | Front projection type subway shield door projection multimedia system |
| WO2020112263A1 (en) * | 2018-11-26 | 2020-06-04 | Ecolink Intelligent Technology, Inc. | Smart barrier alarm device |
Family Cites Families (8)
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| WO2002059701A1 (en) * | 2001-01-23 | 2002-08-01 | Amron Corporation | Prompts for handwashing |
| TWM485268U (en) * | 2014-02-06 | 2014-09-01 | Univ Hsiuping Sci & Tech | Lavatory toilet illumination warning device |
| CN204632031U (en) * | 2015-06-01 | 2015-09-09 | 国家电网公司 | A kind of working-yard fence |
| CN106114857A (en) * | 2016-06-28 | 2016-11-16 | 深圳市元征科技股份有限公司 | Outside Wall Cleaning method based on unmanned plane and unmanned plane |
| CN106738320A (en) * | 2016-12-15 | 2017-05-31 | 山西省交通科学研究院 | A kind of concrete-agitating machine overhauling clears up security protection system and method |
| CN109528092B (en) * | 2018-12-20 | 2021-04-30 | 珠海市一微半导体有限公司 | Method for warning slippery area by intelligent household cleaning robot |
| CN210420559U (en) * | 2019-05-10 | 2020-04-28 | 青岛海尔洗衣机有限公司 | Washing machine |
| CN112530115B (en) * | 2020-11-17 | 2022-07-12 | 云南电网有限责任公司 | Electric power operation personnel protection against electric shock scene intelligence supervises integrated equipment |
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2021
- 2021-09-27 CN CN202211488236.5A patent/CN115862281B/en active Active
- 2021-09-27 CN CN202111134749.1A patent/CN113850974B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08219876A (en) * | 1995-02-15 | 1996-08-30 | Nec Corp | Noncontact type liquid detecting method and detecting apparatus |
| TWM532620U (en) * | 2016-06-30 | 2016-11-21 | Univ Vanung | Wet slippery ground detection device with sound and light warning function |
| CN107342031A (en) * | 2017-05-19 | 2017-11-10 | 上海悉德信息科技有限公司 | Front projection type subway shield door projection multimedia system |
| WO2020112263A1 (en) * | 2018-11-26 | 2020-06-04 | Ecolink Intelligent Technology, Inc. | Smart barrier alarm device |
Non-Patent Citations (1)
| Title |
|---|
| 基于双MCU可故障检测的安全光幕设计;林俊彬;唐露新;张智;;单片机与嵌入式系统应用;20130401(第04期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115862281A (en) | 2023-03-28 |
| CN113850974A (en) | 2021-12-28 |
| CN113850974B (en) | 2022-12-27 |
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