CN203497180U - Aircraft seat safety belt alarm device - Google Patents
Aircraft seat safety belt alarm device Download PDFInfo
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- CN203497180U CN203497180U CN201320517517.9U CN201320517517U CN203497180U CN 203497180 U CN203497180 U CN 203497180U CN 201320517517 U CN201320517517 U CN 201320517517U CN 203497180 U CN203497180 U CN 203497180U
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Abstract
The utility model discloses an aircraft seat safety belt alarm device. The device comprises a power supply circuit, gravity detecting circuits, safety belt unbuckling detecting and alarming circuits, an upper computer, a plurality of slave machines, a serial communication conversion interface circuit and a serial communication expansion interface circuit, wherein one slave machine, one gravity detecting circuit and one safety belt unbuckling detecting and alarming circuit are arranged on each seat; the upper computer is connected to the serial communication expansion interface circuit; the serial communication expansion interface circuit is connected to each slave machine through the serial communication conversion interface circuit; the upper computer is also connected to a displayer used for displaying the state of each seat. By the aircraft seat safety belt alarm device provided by the utility model, a passenger who is not buckled by a safety belt can be prompted, and meanwhile an attendant can prompt the passenger to buckle the safety belt according to the information, so that the safety factor of the passenger in a journey is improved, and injury rate caused by aircraft bump is reduced.
Description
Technical field
The utility model relates to aircraft seat Proper use of technology field, especially a kind of aircraft seat safety belt status alarm device.
Background technology
Aircraft is one of the most general instrument of the long-range traffic of the mankind.But aircraft often due to air-flow etc., causes to pitch in flight course, now passenger will rely on the safety strap on aircraft seat to fix.Aircraft seat safety belt can bear the pulling force of 6600 Ns, and passenger is played a protective role.If passenger does not fasten seat belts, when air craft battery, will leave seat due to powerful inertia, cause and wound.The safety strap of automobile has warning function at present, can reference example the utility model patent " a kind of seat with safety band alarm device " that is 201020616043.X as application number, and the application number application for a patent for invention " safety strap and warning device thereof " that is 201210310155.6.But because the left and right buckle of the safety strap of aircraft is the abdominal region in passenger, do not possess the condition that mechanical alarm switch is installed, therefore safety strap is not installed on aircraft at present and is not buckled warning device, do not find relevant alarm technique yet.In addition, existing automobile safety belt alarm device can not be reported to the police to a plurality of seats, simultaneously can not display seat item, so be not suitable for aircraft.Therefore being necessary to study a kind of aircraft safety band does not buckle warning device, to improve birdman's safety.
Utility model content
Blank actual state in view of current aircraft safety band alarm field, the utility model aims to provide a kind of device that can judge whether aircraft seat safety belt is not buckled, and can buckle in time safety strap by reminding passengers, and the seat number of warning can also be provided to bus attendant, to remind in time relevant passenger.
For reaching above object, the utility model provides following technical scheme: a kind of aircraft seat safety belt warning device, comprising: power circuit, gravity testing circuit, safety strap are not buckled detection alarm circuit, upper computer, many slaves, serial communication conversion interface circuit and Extending of Serial Communication interface circuits; Described power circuit is converted to by the DC supply of aircraft the voltage that each device of this device can be used; A described slave, a gravity testing circuit and a safety strap are set on each seat and do not buckle detection alarm circuit, whether described gravity testing circuit will have passenger's discernible signal to export described slave on seat, described safety strap is not buckled the discernible signal whether detection alarm circuit buckle safety strap and is exported described slave to, and described slave exports alerting signal to described safety strap and do not buckle detection alarm circuit; Described upper computer connects Extending of Serial Communication interface circuit, and described Extending of Serial Communication interface circuit is connected to each slave by serial communication conversion interface circuit; Described upper computer is also connected to for showing the telltale of the state of each seat.
Preferably, described gravity testing circuit comprises travel switch K and pull-up resistor R3, and described travel switch K is installed in cushion, and the force rod of travel switch K upward, held by the bottom of Chain cushion by the base of travel switch K; The common reference end GND of a terminating systems of described travel switch K, the other end is received a described slave, and this other end also receives one end of pull-up resistor R3, and the other end of pull-up resistor R3 is received feeder ear.
Preferably, described safety strap comprises: two of left and right braid, be connected to dead bolt and the snap close of the head of two braids in described left and right, be connected to the left and right steel fixed plate with mounting hole of the root of two braids in described left and right; Described fixed plate is fixed to the side aluminium alloy frame of aircraft seat; In the braid of two of described left and right, there is stainless steel wire.
Preferably, described safety strap is not buckled detection alarm circuit and is comprised: two electric current device transformer T1, T2; Left side braid passes the unshakable in one's determination of electric current device transformer T1 and is fixed together with the iron core of electric current device transformer T1, on the iron core of electric current device transformer T1, wears the first siding ring N11 that is wound with electric current device transformer T1; Right side braid passes the iron core of electric current device transformer T2, and is fixed together with the iron core of electric current device transformer T2, on the iron core of electric current device transformer T2, wears the second siding ring N22 that is wound with electric current device transformer T2; The loop that two of left and right braid, dead bolt, snap close and side aluminium alloy frame form forms the second siding ring N12 of electric current device transformer T1, and the first siding ring N21 of electric current device transformer T2; The second siding ring N22 of the first siding ring N11 of described electric current device transformer T1 and electric current device transformer T2 is connected to respectively the different port of slave.
Preferably, described safety strap is not buckled detection alarm circuit and is also comprised: alarm lamp LED1, and the positive pole of described alarm lamp LED1 is connected to feeder ear through current-limiting resistance R2, and the negative pole of alarm lamp LED1 is connected to slave.
Preferably, described serial communication conversion interface circuit comprises a plurality of two-way TTL/RS485 level transferring chip; Described Extending of Serial Communication interface circuit comprises Serial Extension chip; The serial delivery port of described upper computer and serial input mouth are connected to described Serial Extension chip, and described Serial Extension chip is connected to the TTL side of at least one two-way TTL/RS485 level transferring chip IC7; The RS485 side of described two-way TTL/RS485 level transferring chip IC7 is connected to the RS485 side of a plurality of two-way TTL/RS485 level transferring chip IC6 by bus, the TTL side of described two-way TTL/RS485 level transferring chip IC6 is connected to serial input mouth and the serial delivery port of a slave.
Preferably, described Serial Extension chip is connected to two two-way TTL/RS485 level transferring chip IC7 that are set up in parallel, the TTL side of IC7 '; The RS485 side of each two-way TTL/RS485 level transferring chip IC7, IC7 ' is connected to respectively the RS485 side of 256 two-way TTL/RS485 level transferring chip IC6 by bus.
Preferably, the telltale being connected with described upper computer comprises: for 3 charactrons of display seat item, for showing whether have people's indicator lamp LED2 and the indicator lamp LED3 for reporting to the police to not detaining safety strap on this seat on seat.
The utlity model has following advantage:
1. safety strap is installed on each seat and is not buckled detection alarm circuit, and come reminding passengers to buckle safety strap with LED alarm lamp, reduced widely the work capacity of aircraft bus attendant, improved safety.
2. use gravity switch, judge on seat whether have people, reduced flase alarm.
3. adopt TTL/RS485 conversion chip, can meet the serial communication of 200m farthest between upper computer and slave.
4. adopt serial port extended chip, can meet between a upper computer and maximum 512 slaves and communicate, the safety strap that can meet large aircraft is reported to the police.
5. slave can be sent to upper computer by gravity switch state and seat belt status information, and upper computer carries out logic judgement, and produces alerting signal, is conducive to bus attendant and grasps each passenger and whether buckle safety strap, thereby played double-reminding effect.
Accompanying drawing explanation
By the more specifically explanation of the preferred embodiment of the present utility model shown in accompanying drawing, above-mentioned and other object of the present utility model, Characteristics and advantages will be more clear.In whole accompanying drawings, identical Reference numeral is indicated identical part.Deliberately do not press actual size equal proportion convergent-divergent and draw accompanying drawing, focus on illustrating purport of the present utility model.
Fig. 1 is that safety belt structure and gravity detect principle sketch;
Fig. 2 is aircraft safety band warning device way circuit functional block diagram.
The specific embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated: the present embodiment is implemented take technical solutions of the utility model under prerequisite, provided detailed embodiment, but protection domain of the present utility model is not limited to following embodiment.
The aircraft safety band warning device that the present embodiment is related, as a whole, comprise that power circuit 10, gravity testing circuit 20, safety strap do not buckle detection alarm circuit 30, upper computer 40, many slaves 50, serial communication conversion interface circuit 60 and Extending of Serial Communication interface circuits 70, below will respectively above-mentioned each system, device be described in detail.
Power circuit 10:
Referring to Fig. 1, Fig. 2, described power circuit adopts MAX6765 step-down chip, the 28.5V DC supply of aircraft is stablized to 5V and is exported feeder ear Vcc to, to give each device power supply.
Gravity testing circuit 20:
Referring to Fig. 1, described gravity testing circuit 20 adopts travel switch K as gravity switch, distinguishes on seat, whether there is passenger.Travel switch K is installed in cushion, and force rod upward, held by the bottom of Chain cushion by the base of travel switch K.The common reference end GND of the right-hand member welding system of travel switch K, left end is received the P0.0 mouth of a slave 50, and P0.0 mouth also receives one end of pull-up resistor R3, above draws the other end of R3 to receive feeder ear Vcc(+5V power supply).
When not having passenger to sit on seat, travel switch K is not triggered, and in normally open, the voltage U 3 of P0.0 mouth is high level; After passenger sits down, seat cushion sinks.When gravity is greater than 5kg child's body weight, the force rod pressurized of travel switch K, makes inner contact closed, and P0.0 mouth is connected to GND, and U3 equals 0.
Safety strap is not buckled detection alarm circuit 30:
Referring to Fig. 1, safety strap is selected the stainless steel wire blending that 40 of fire-retardant intensified nylon silks are 0.1mm with diameter, according to < < HB7048:1994 civil aircraft passenger safety band designing requirement > >, being processed into width is two of the left and right braid 31,32 that 51mm, thickness are 2mm.
The head of two braids 31,32 in left and right connects respectively high-intensity dead bolt 33 and snap close 34, and the root of braid is received respectively on the left and right steel fixed plate 35,36 with 6mm mounting hole, the aircraft safety band of complete.High strength bolt by regulation, is fixed to the left and right steel fixed plate 35,36 of safety strap on the side aluminium alloy frame 37 of aircraft seat.Thus, safety strap has the tensile strength of 6600 Ns, also has the characteristic of faint conduction.
Adopt T1, two electric current device transformers of T2 to detect the state of buckling of two safety strap in left and right.
Select the flattened rectangular ring-type ferrite bead of 20mm * 60mm * 5mm as the iron core of T1, on the iron core of T1, the enamel wire that is 0.3mm by wire diameter, wears around 30 circles, forms the first siding ring N11 of T1.T1 is placed in the left side of seat.During installation, the root of left side braid 31 passes the iron core of T1, and then is fixed on the side aluminium alloy frame 37 of aircraft seat.With epoxy resin, T1 is bonded in to the root of left side braid 31.
The secondary side N12 of T1 is by the side aluminium alloy frame 37 of two of left and right braid 31,32 that can faint conduction and two buckles of safety strap front end (dead bolt 33 and snap close 34), aircraft seat, forms C/LOOP, is equivalent to a 1 circle coil.The secondary side of described T1 has also formed the primary side N21 of T2 simultaneously.If the dead bolt of safety strap 33 is not buckled with snap close 34, be equivalent to the secondary side N12 open circuit of T1.
The timer mouth T0/P3.0 of slave IC5, by program setting, produces the square-wave signal U1 of 3kHz, U1 process current-limiting resistance R1, then pass through feed through capacitor C1, be connected to one end of the first siding ring N11 of T1.The other end of T1 is connected to the GND of slave IC5.The current i 1 of the primary side of T1 approximates 0.5mA.After requiring passenger to sit on seat, by the buckle of safety belt of left and right, now, on safety strap, induce the secondary side current that is about 10mA.
The iron core of the 2nd current transformer T2 consists of the flattened rectangular ring-type ferrite of above-mentioned same size, is placed at the right side of seat.On the iron core of T2, the enamel wire that is 0.2mm by wire diameter, wears around 60 circles, forms the second siding ring N22 of T2; The right side braid 32 of faint conduction is through the ferrite bead of T2.With epoxy resin, the iron core of T2 is bonded in to the root position of the close bolt of rear end plate of right side braid 32.Safety strap loop is equivalent to the primary side N21 of T2.
When passenger does not buckle safety strap, the primary side N21(safety strap of second current transformer) current i 2=0; When passenger buckles safety strap, the primary side N21 of T2 just forms loop, and the current i 3 that the weak current i2 on N21 induces on the secondary side N22 of T2 is about 0.1mA.
I3 by bridge rectifier circuit D, π type filter circuit RC, sample resistance R4, obtains output voltage U 2 successively, is about 4.5V.Output voltage U 2 is connected to the P0.1 mouth of slave IC5.The timer mouth T1/P3.1 of slave IC5 is received to the negative pole of red LED 1 alarm lamp of this slave, the positive pole process current-limiting resistance R2 of LED1 alarm lamp, then receive feeder ear Vcc(+5V).Red LED 1 alarm lamp is installed in the original read-out of seat handguard.
In the time of on buckle of safety belt, U2 is greater than the input high level thresholding (2.5V) of slave IC5, and slave thinks that safety strap buckles, the T1/P3.1 mouth output high level of IC5, and LED1 indicator lamp does not work; When safety strap is not buckled, U2 equals 0, be less than the input high level thresholding (2.5V) of micro controller system IC5, slave IC5 thinks that safety strap do not buckle, the square-wave signal U4 of the timer mouth T1/P3.1 output 3Hz of IC5, red LED 1 alarm lamp being installed in seat handguard read-out produces flashing light alarm signal, and prompt passengers is buckled safety strap.
Upper computer 40, slave 50, serial communication conversion interface circuit 60 and Extending of Serial Communication interface circuit 70:
Referring to Fig. 2, described upper computer IC2 and a plurality of described slave 50(IC5, maximum 512) all adopt 8 C8051F340 paster micro controller systems of low-power consumption.In the present embodiment, upper computer IC2 and maximum 512 slave IC5 carry out the serial data communication of 200m farthest, are greater than the length of large aircraft from first block to deck store.Serial communication conversion interface circuit 60 comprises a plurality of two-way TTL/RS485 level transferring chip MAX1483; Described Extending of Serial Communication interface circuit 70 comprises a low-power consumption SP2327/8DP Serial Extension chip IC 8, realizes the expansion of RS485 512 road.The serial delivery port TXD/P0.4 of described upper computer IC2 and serial input mouth RXD/P0.5 are connected to described Serial Extension chip IC 8, described Serial Extension chip IC 8 is connected to two two-way TTL/RS485 level transferring chip IC7 that are set up in parallel, the TTL side of IC7 ', and wherein IC7, IC7 ' correspond respectively to 256 road slave signals.Thus, the RS485 side of each two-way TTL/RS485 level transferring chip IC7, IC7 ' is connected to respectively the RS485 side of 256 two-way TTL/RS485 level transferring chip IC6 by bus, described in each, the TTL side of two-way TTL/RS485 level transferring chip IC6 is connected to serial input mouth RXD/P0.5 and the serial delivery port TXD/P0.4 of a slave IC5.Certainly, when aircraft seat quantity is not 512, this circuit will suitably be adjusted.For example, when aircraft seat quantity is less than 256, can only adopt a slice IC7, cancel IC7 '; Or aircraft seat quantity is between 256 to 512 time, the corresponding slave signal of each IC7, IC7 ' is less than 256.In a word, can freely adjust according to the actual requirements.
The serial delivery port TXD/P0.4 of upper computer IC2 exports touring interrogation signal, be connected to Serial Extension chip IC 8, be connected to the TTL side of two-way TTL/RS485 level transferring chip IC7, IC7 ', the RS485 side of two-way TTL/RS485 level transferring chip IC7, IC7 ' is connected to the RS485 side of a two-way TTL/RS485 level transferring chip IC6 by bus (A1, B1, A2, B2, GND), serial input mouth RXD/P0.5 from the TTL side joint of IC6 to each slave IC5, makes slave IC5 can read the serial interrogation signal of upper computer IC2 again.The serial delivery port TXD/P0.4 of each slave IC5 is also connected to the serial input mouth RXD/P0.5 of upper computer IC2 by above-mentioned reverse path.
The Asking About The Address of upper computer IC2 is from 1, is progressively increased to the maxim (can by software set) at seat, in order the output state of all slave IC5 of touring inquiry.Inquiry is spaced apart 1 second each time.
Otherwise, when the inquiry that slave IC5 determines upper computer IC2 is numbered at once with own seat, by the serial port TXD/P0.4 of slave IC5, send and reply serial signal, carry out the data answering of 200m farthest with upper computer IC2.
Described upper computer IC2 is arranged on aircraft aftbulkhead.Parallel signal is exported in delivery port P1.0～1.7 of upper computer IC2, receives " 8 sections of input ends " of 3 charactrons, and a position of 3 charactrons, " the common cathode input end " of ten, hundred are received in delivery port P2.0～2.2 of upper computer IC2.Also can be set as two, the left side " row " that shows seat, display seat figure place of rightmost, can be from A to L.
Before this device is installed, use single-chip programmer, realize following Serial Communication Function:
Slave IC5 receives after the inquiry of upper computer IC2, according to the state of slave P0.0 mouth and P0.1 mouth, by the serial delivery port TXD/P0.4 of slave, to upper computer, sends 8 signals of 3 frame.
The 1st frame and the 2nd frame are the machine address signal (seat number), can be complete zero to complete 1 coding, totally 512 different codings;
The 3rd frame is status signal.On seat, have passenger, the position, end of the 3rd 8 frame signals is 0, otherwise is 1; And when safety strap is not buckled, the penultimate of the 3rd 8 frame signals is zero, otherwise is 1.
The serial input mouth RXD/P0.5 of upper computer IC2 reads two frame signals that slave IC5 serial port sends, and restores address (seat numbering), is presented on 3 charactrons, and displayed value is corresponding with the seat of air ticket.
Upper computer IC2 carries out logic judgement.When the position, end of 8 signals of the 3rd frame is 0, the P3.2 mouth output low level of upper computer IC2, " having people " green LED 2 indicator lamps on read-out are bright.
When 8 signals of the 3rd frame are 00000000, the T1/P3.1 mouth of upper computer IC2 output 5Hz square wave, " safety strap warning " red LED 3 alarm lamps produce red rapid flashing light alarm signal.
Although the utility model with preferred embodiment openly as above; but it is not for limiting claim; any those skilled in the art are not within departing from spirit and scope of the present utility model; can make possible change and modification, the scope that therefore protection domain of the present utility model should be defined with the utility model claim is as the criterion.
Claims (8)
1. an aircraft seat safety belt warning device, is characterized in that comprising: power circuit, gravity testing circuit, safety strap are not buckled detection alarm circuit, upper computer, many slaves, serial communication conversion interface circuit and Extending of Serial Communication interface circuits;
Described power circuit is converted to by the DC supply of aircraft the voltage that each device of this device can be used;
A described slave, a gravity testing circuit and a safety strap are set on each seat and do not buckle detection alarm circuit, whether described gravity testing circuit will have passenger's discernible signal to export described slave on seat, described safety strap is not buckled the discernible signal whether detection alarm circuit buckle safety strap and is exported described slave to, and described slave exports alerting signal to described safety strap and do not buckle detection alarm circuit;
Described upper computer connects Extending of Serial Communication interface circuit, and described Extending of Serial Communication interface circuit is connected to each slave by serial communication conversion interface circuit;
Described upper computer is also connected to for showing the telltale of the state of each seat.
2. aircraft seat safety belt warning device as claimed in claim 1, it is characterized in that: described gravity testing circuit comprises travel switch K and pull-up resistor R3, described travel switch K is installed in cushion, the force rod of travel switch K upward, held by the bottom of Chain cushion by the base of travel switch K; The common reference end GND of a terminating systems of described travel switch K, the other end is received a described slave, and this other end also receives one end of pull-up resistor R3, and the other end of pull-up resistor R3 is received feeder ear.
3. aircraft seat safety belt warning device as claimed in claim 1, it is characterized in that: described safety strap comprises: two of left and right braid, be connected to dead bolt and the snap close of the head of two braids in described left and right, be connected to the left and right steel fixed plate with mounting hole of the root of two braids in described left and right; Described left and right steel fixed plate is fixed to the side aluminium alloy frame of aircraft seat; In the braid of two of described left and right, there is stainless steel wire.
4. aircraft seat safety belt warning device as claimed in claim 3, is characterized in that: described safety strap is not buckled detection alarm circuit and comprised: two electric current device transformer T1, T2; Left side braid passes the unshakable in one's determination of electric current device transformer T1 and is fixed together with the iron core of electric current device transformer T1, on the iron core of electric current device transformer T1, wears the first siding ring N11 that is wound with electric current device transformer T1; Right side braid passes the iron core of electric current device transformer T2, and is fixed together with the iron core of electric current device transformer T2, on the iron core of electric current device transformer T2, wears the second siding ring N22 that is wound with electric current device transformer T2; The loop that two of left and right braid, dead bolt, snap close and side aluminium alloy frame form forms the second siding ring N12 of electric current device transformer T1, and the first siding ring N21 of electric current device transformer T2; The second siding ring N22 of the first siding ring N11 of described electric current device transformer T1 and electric current device transformer T2 is connected to respectively the different port of slave.
5. aircraft seat safety belt warning device as claimed in claim 4, it is characterized in that: described safety strap is not buckled detection alarm circuit and also comprised: alarm lamp LED1, the positive pole of described alarm lamp LED1 is connected to feeder ear through current-limiting resistance R2, and the negative pole of alarm lamp LED1 is connected to slave.
6. aircraft seat safety belt warning device as claimed in claim 1, is characterized in that: described serial communication conversion interface circuit comprises a plurality of two-way TTL/RS485 level transferring chip; Described Extending of Serial Communication interface circuit comprises Serial Extension chip; The serial delivery port of described upper computer and serial input mouth are connected to described Serial Extension chip, and described Serial Extension chip is connected to the TTL side of at least one two-way TTL/RS485 level transferring chip IC7; The RS485 side of described two-way TTL/RS485 level transferring chip IC7 is connected to the RS485 side of a plurality of two-way TTL/RS485 level transferring chip IC6 by bus, described in each, the TTL side of two-way TTL/RS485 level transferring chip IC6 is connected to serial input mouth and the serial delivery port of a slave.
7. aircraft seat safety belt warning device as claimed in claim 6, is characterized in that: described Serial Extension chip is connected to two two-way TTL/RS485 level transferring chip IC7 that are set up in parallel, the TTL side of IC7 '; The RS485 side of each two-way TTL/RS485 level transferring chip IC7, IC7 ' is connected to respectively the RS485 side of 256 two-way TTL/RS485 level transferring chip IC6 by bus.
8. aircraft seat safety belt warning device as claimed in claim 1, it is characterized in that: the telltale being connected with described upper computer comprises: for 3 charactrons of display seat item, for showing whether there is people's indicator lamp LED2 on seat, and the indicator lamp LED3 for reporting to the police to not detaining safety strap on this seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517517.9U CN203497180U (en) | 2013-08-22 | 2013-08-22 | Aircraft seat safety belt alarm device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320517517.9U CN203497180U (en) | 2013-08-22 | 2013-08-22 | Aircraft seat safety belt alarm device |
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| CN203497180U true CN203497180U (en) | 2014-03-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320517517.9U Expired - Fee Related CN203497180U (en) | 2013-08-22 | 2013-08-22 | Aircraft seat safety belt alarm device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459950A (en) * | 2014-09-29 | 2016-04-06 | 矢崎总业株式会社 | vehicle warning system |
| CN107171419A (en) * | 2017-05-31 | 2017-09-15 | 上海电力学院 | Wireless electric energy transmission device based on Bluetooth control |
| CN109071025A (en) * | 2016-04-04 | 2018-12-21 | B/E航空公司 | Birdman's movement monitoring |
| CN110758314A (en) * | 2019-06-18 | 2020-02-07 | 广州八通电子实业有限公司 | System and method for detecting whether safety belt is worn |
-
2013
- 2013-08-22 CN CN201320517517.9U patent/CN203497180U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105459950A (en) * | 2014-09-29 | 2016-04-06 | 矢崎总业株式会社 | vehicle warning system |
| CN105459950B (en) * | 2014-09-29 | 2019-02-19 | 矢崎总业株式会社 | Vehicle-mounted warning device |
| CN109071025A (en) * | 2016-04-04 | 2018-12-21 | B/E航空公司 | Birdman's movement monitoring |
| CN109071025B (en) * | 2016-04-04 | 2022-03-01 | B/E航空公司 | Aircraft passenger activity monitoring |
| CN107171419A (en) * | 2017-05-31 | 2017-09-15 | 上海电力学院 | Wireless electric energy transmission device based on Bluetooth control |
| CN110758314A (en) * | 2019-06-18 | 2020-02-07 | 广州八通电子实业有限公司 | System and method for detecting whether safety belt is worn |
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