CN208432209U - Sensing device for vehicle brake pedal and the sensor for vehicle brake pedal - Google Patents
Sensing device for vehicle brake pedal and the sensor for vehicle brake pedal Download PDFInfo
- Publication number
- CN208432209U CN208432209U CN201820828797.8U CN201820828797U CN208432209U CN 208432209 U CN208432209 U CN 208432209U CN 201820828797 U CN201820828797 U CN 201820828797U CN 208432209 U CN208432209 U CN 208432209U
- Authority
- CN
- China
- Prior art keywords
- sensing
- signal
- trigger
- brake pedal
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses for vehicle brake pedal sensing device, for the sensor and method for sensing of vehicle brake pedal.Sensing device for vehicle brake pedal, comprising: sensing element, the sensing element are used to sense the magnetic field strength of magnetic element, and export sensing signal；After the sensing element links with the brake pedal in free state to be arranged, the sensing element exports initial sensing signal；The corresponding initial voltage value of the initial sensing signal；And processing unit, the processing unit and the sensing element communicate to connect, and to receive the sensing signal that the sensing element is exported, and are arranged with obtaining corresponding trigger voltage threshold value based on the initial sensing signal；The trigger voltage threshold value corresponds to a trigger signal.When the sensor application to corresponding brake pedal, the sensor enables the corresponding brake pedal to issue trigger signal in accurate trigger position according to the initial sensing signal.
Description
Technical field
The utility model relates to a kind of sensor, especially a kind of sensor and sensing dress for vehicle brake pedal
It sets.
Background technique
Sensor (sensor) is a kind of detection device, can experience measured information, and the information that can will be experienced,
Be for conversion into the information output of electric signal or other required forms according to certain rules, with meet the transmission of information, processing, storage,
It has been shown that, record and control etc. require.Correspondingly, sensor has a variety of practical uses.For example, it is needed on vehicle using corresponding
Sensor obtain corresponding information, thus for vehicle normally, stable operation indispensable role is provided.
Particularly, brake operation may be implemented by being moved to predeterminated position in the brake pedal on vehicle, can also trigger
The on-off of brake lamp, cooperation carry out the operation such as engine start.Thus, the position of brake pedal is sensed by sensor,
And it obtains accurate sensing signal then and becomes problem in need of consideration.
Utility model content
The purpose of this utility model first is that in order to overcome the shortcomings in the prior art, a kind of sensor and sensor are provided
Device.
In order to achieve the above object, the utility model is achieved through the following technical solutions:
A kind of sensing device for vehicle brake pedal, which is characterized in that the sensing device includes: sensing element,
The sensing element is used to sense the magnetic field strength of magnetic element, and exports sensing signal；When the sensing element and in certainly
After the brake pedal linkage setting of state, the sensing element exports initial sensing signal；The initial sensing signal corresponding one
Initial voltage value (Vf)；And
Processing unit, the processing unit and the sensing element communicate to connect, and are exported with receiving the sensing element
Sensing signal, and be arranged with obtaining corresponding trigger voltage threshold value (Vt) based on the initial sensing signal；The trigger voltage
Threshold value corresponds to a trigger signal.
One embodiment according to the present utility model, when brake pedal is moved to default trigger position, the sensing
Part exports trigger signal；
The processing unit receives the trigger signal and exports control signal.
One embodiment according to the present utility model, the control signal are that brake lamp switch signal or automobile starting are believed
Number.
One embodiment according to the present utility model, the processing unit include comparing unit；
The comparing unit is set as voltage value and triggering corresponding to the sensing signal of the output of sensing element described in comparison
Size between voltage threshold (Vt)；
When the corresponding voltage value of sensing signal voltage value corresponding less than the trigger voltage threshold value, the sensing
Device exports first control signal；
When the corresponding voltage value of sensing signal voltage value corresponding greater than the trigger voltage threshold value, the sensing
Device exports second control signal.
One embodiment according to the present utility model, the first control signal are low level signal (Vl)；
The second control signal is high level signal (Vh).
One embodiment according to the present utility model, the processing unit include computing unit；
Trigger voltage threshold value is calculated according to the corresponding initial voltage value of the initial sensing signal in the computing unit.
One embodiment according to the present utility model, the computing unit are default normal with one by the initial voltage value (Vf)
Number voltage value (Vc) is summed, and obtains the trigger voltage threshold value (Vt).
One embodiment according to the present utility model, the processing unit further include storage unit；
The storage unit stores the preset constant voltage value and the trigger voltage threshold value；
The computing unit and the storage unit communicate to connect.
One embodiment according to the present utility model, the processing unit further include judging unit and trigger unit；
The judging unit receives the sensing signal of the sensing element output；
When judging unit judgement show that the corresponding voltage value of the sensing signal falls into default trigger voltage range
(V01-V02) when interior, the trigger unit triggers the computing unit.
One embodiment according to the present utility model, the processing unit further include closing unit；
The closing unit and the computing unit communicate to connect；
After trigger voltage threshold value is calculated in the computing unit, the closing unit closes the computing unit again
Computing function.
One embodiment according to the present utility model, further includes:
Circuit board；
The sensing element and the processing unit are each provided on the circuit board, and with the circuit board electrical connection.
One embodiment according to the present utility model, when brake pedal is mobile, the sensing element exports linear touching
It signals；
The control signal is a switching signal.
One embodiment according to the present utility model, the sensing element are linear hall element.
One embodiment according to the present utility model, further includes:
Magnetic element, the magnetic element, which is used to link with brake pedal, to be arranged, and can be close relative to the sensor
And it is located apart from.
One embodiment according to the present utility model, the magnetic element are magnet.
A kind of sensor for vehicle brake pedal, which is characterized in that the sensor includes:
Shell, the shell is for being installed on vehicle；With
Sensing element, the sensing element are used to sense the magnetic field strength of magnetic element, and export sensing signal；
After the sensing element links with the brake pedal in free state to be arranged, the sensing element output is initial
Sensing signal；The initial sensing signal is corresponding an initial voltage value (Vf)；The initial voltage value (Vf) is for determining the biography
The trigger voltage threshold value (Vt) of sensor.
One embodiment according to the present utility model, when brake pedal is mobile, the sensing element exports linear touching
It signals；When brake pedal is moved to default trigger position, the sensing element exports trigger signal；
The processing unit (30) receives the trigger signal and exports control signal
The control signal is a switching signal.
One embodiment according to the present utility model, the sensing element are linear hall element.
A kind of method for sensing, for sensing the position of brake pedal, which is characterized in that the method for sensing includes:
Sensing brake pedal is in magnetic field strength when initial free state, and obtains initial sensing signal；This is initially felt
It is corresponding an initial voltage value (Vf) to survey signal；
A trigger voltage threshold value (Vt) is calculated according to the initial voltage value；The corresponding triggering of the trigger voltage threshold value
Signal.
One embodiment according to the present utility model, to the initial voltage value (Vf) and a preset constant voltage value (Vc)
It sums, and obtains the trigger voltage threshold value (Vt).
One embodiment according to the present utility model is grasped as follows before the trigger voltage threshold value is calculated
Make:
Judge whether the corresponding voltage value of sensing signal falls into default trigger voltage (V01-V02) range；
When the corresponding voltage value of sensing signal is fallen within the scope of trigger voltage, triggering to trigger voltage threshold value (Vt) into
The operation that row calculates.
One embodiment according to the present utility model is grasped as follows after the trigger voltage threshold value is calculated
Make:
Close the operation calculated again trigger voltage threshold value (Vt).
One embodiment according to the present utility model proceeds as follows after obtaining the trigger voltage threshold value:
The position of brake pedal is sensed, exports corresponding control signal according to the trigger signal sensed.
One embodiment according to the present utility model is grasped as follows after obtaining the trigger voltage threshold value (Vt)
Make:
The position of brake pedal is sensed, and exports sensing signal；
Compare the size between the corresponding voltage value of sensing signal and the trigger voltage threshold value (Vt)；
When the corresponding voltage value of the sensing signal is less than the trigger voltage threshold value, first control signal is exported；
When the corresponding voltage value of the sensing signal is greater than the trigger voltage threshold value, second control signal is exported.
Compared with prior art, the utility model sensor can be with the corresponding such as initial voltage value of initial sensing signal
Etc. based on physical quantitys, obtain the accurate physical quantitys such as the corresponding trigger voltage threshold value of trigger signal accordingly.Particularly, when
When the sensor application to corresponding brake pedal, the sensor is obtained the brake pedal and be in by sensing element not to be had
Initial sensing signal when the free state trampled enables the corresponding brake pedal to exist according to the initial sensing signal
Accurate trigger position (corresponding at a certain shift motion) issues trigger signal.Further, the sensor can be always
Corresponding control signal is issued according to accurate trigger signal, to avoid brake pedal tolerance bring such as normal danger
The problems such as inconsistent.That is to say, regardless of brake pedal in first entrucking in which kind of height, the sensor always can be
Brake pedal is toggled when moving through default moving distance and issues corresponding control signal, to have high essence
Degree.
Detailed description of the invention
Fig. 1 be it is provided by the utility model it is a kind of include sensor sensor device and brake pedal, brake lamp it
Between fiting relation figure.
Fig. 2 is the functional block diagram of the processing unit in Fig. 1.
Fig. 3 a is relational graph of the sensing unit between corresponding position and sensing signal corresponding voltage in Fig. 1.
Fig. 3 b is that the processing unit in Fig. 1 senses work in the relationship of corresponding position output corresponding control signal in sensor
Figure.
Fig. 4 provides a kind of flow chart of the embodiment one of method for sensing for the utility model.
Fig. 5 is the flow chart of the embodiment two of the method for sensing of Fig. 4.
Fig. 6 is the flow chart of the embodiment three of the method for sensing of Fig. 4.
Fig. 7 is the flow chart of the embodiment four of the method for sensing of Fig. 4.
Fig. 8 is the flow chart of the embodiment five of the method for sensing of Fig. 4.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing:
Embodiment one:
Referring to Fig. 1, a kind of sensing device sensor 101 for vehicle brake pedal provided by the utility model.Institute
State sensor 101 for be arranged in vehicle brake pedal 200, and be used to sense the magnetic field strength of magnetic element 300.It is described
Sensor 101 includes sensing element 10 and processing unit 30.
The sensing element 10 is used to sense the magnetic field strength of magnetic element 300.The sensing element 10 is arranged in vehicle
On brake pedal 200, and export sensing signal.The sensing element 10 can be strong using the physical quantitys such as electric signal characterization magnetic field
Degree.Preferably, 10 output voltage signal of sensing element, to characterize corresponding magnetic field strength.In order to accurately, convenient earth's surface
Magnetic field strength is levied, the voltage signal and be in the correlativities such as linear function to magnetic field strength that the sensing element 10 exports.
Correspondingly, in the present embodiment, the size of the corresponding voltage value of 10 sensing signal of sensing element and (sensing element 10 and magnetic
Property element 200 between) distance is linear related.
When 101 installation to the brake pedal for the first time of sensor, the sensor 101 forms conductive loops, the sense
Element 10 is surveyed to work on power.At this point, the sensor 101 can sense when magnetic when brake pedal 200 is in initial free position
Field intensity, and initial sensing signal is exported in the form of voltage value.Correspondingly, the sensor 101 follows brake pedal 200 mobile
When to any position, a corresponding sensing signal can produce.When brake pedal 200 is moved to default trigger position Lt
When, the sensing signal of the output of the sensing element 10 characterization trigger signal.
As long as concrete model, specification and the type etc. of the sensing element 10 can meet the corresponding magnetic field strength of sensing i.e.
It can.In order to facilitate that the sensing signal for characterizing magnetic field strength is emerged from a manner of electric signal, the sensing element 10 is
Hall element.It that is to say, the sensing element 10 is based on Hall effect and realizes its function.Further, in order to facilitate that precisely
Ground characterizes the linear relationship between the magnetic field strength that the sensing element 10 senses and distance, and the sensing element 10 is line
Property Hall chip.It that is to say, the sensing element 10 is linear hall effect chip.As needed, the sensing element 10 can
Think 2D Hall chip or 3D Hall chip.
Correspondingly, with the space D in physical space between the sensing element 10 and magnetic element 200.It that is to say, institute
It states and is spaced setting between sensing element 10 and magnetic element 200.Correspondingly, the sensor 101 can be avoided Mechanical Contact,
And its function is realized using contactless mode, avoid the problems such as Mechanical Contact brings error, abrasion.
Referring to Figure 2 together, Fig. 3 a and Fig. 3 b, the processing unit 30 are used to handle what the sensing element 10 exported
Sensing signal.The processing unit 30 can be electrically connected with the sensing element 10.Correspondingly, the processing unit 30 can be with
With 10 electrical couplings of sensing element, as long as can be realized the transmitting of corresponding electric signal.Correspondingly, the processing unit 30
It can handle corresponding voltage signal.It is understood that a variety of implementations can be used for the processing of corresponding electric signal,
For example at least one in electronic circuit, integrated circuit (chip) and logic element.In order to facilitate that the processing of signal, saving sky
Between, the processing unit 30 can use microprocessor.Specifically, the processing unit 30 can use central processing unit
(CPU) or the microprocessors such as single-chip microcontroller (MCU) realize its function.
The processing unit 30 receives the sensing signal that the sensing element 10 exports.Correspondingly, the processing unit 30
The sensing signal of voltage signal form is received, and the sensing signal is handled.Specifically, the processing unit 30 can be with
Read the sensing signal that the sensing element 10 obtains.The processing unit 30 exports initial according to the sensing element 10
Sensing signal and calculate to obtain the corresponding trigger voltage threshold value of default trigger signal.The trigger voltage threshold value can correspond to a certain
Predetermined voltage threshold, as trigger voltage threshold value.Preferably, in order to facilitate that the processing of signal, the processing unit 30 will
The corresponding initial voltage value Vf of the initial sensing signal sensed and preset constant voltage value Vc sums, to be triggered
The corresponding trigger voltage threshold value Vt of signal.
Preferably, the processing unit 30 includes computing unit 31.The calculating primitive 31 is corresponding by initial sensing signal
Initial voltage value Vf and a certain predeterminated voltage constant value Vc sum, and obtain the trigger voltage threshold value corresponding to trigger signal
Vt.The computing unit 31 can be realized using circuits such as corresponding adder operation circuits, or use the member with computing function
Device is realized.
Further, the processing unit 30 further includes storage unit 33.The storage unit 33 is corresponding for storing
Data, operation program etc..Specifically, the storage unit 33 can be used for storing voltage constant value.The voltage constant value Vc table
Levy voltage value increment of the sensing element 10 when brake pedal 200 is moved to trigger position Lt from initial free position Lf.
The storage unit 33 can be corresponding memory.For example, the storage unit 33 can deposit for single-chip microcontroller (MCU) is included
Reservoir.
Calculate and according to this in order to avoid the sensing element 10 is triggered when being fitted without to brake pedal 200
Not accurate " trigger voltage threshold value " is obtained, the processing unit 30 further includes trigger unit 35.When the sensing element
When the corresponding initial voltage value Vf of initial sensing signal of 10 outputs is fallen into default trigger voltage range V01-V02, the touching
Trigger voltage threshold value Vt is calculated in the 35 triggering processing unit 30 of bill member.Correspondingly, the default trigger voltage range
V01-V02 can for the sensor 101 follow brake pedal 200 at an arbitrary position when generate voltage value construction electricity
Press range.It that is to say, issuable voltage value is wrapped in the whole life cycle of the sensor 101 during the work time
It includes in the default trigger voltage range V01-V02.The sensor 101 may due to faulty operation, test etc. and
Power on operation is carried out, at this point, the signal that the sensing element 10 senses may not be that brake pedal 200 is in free state
When voltage signal, based on " trigger voltage threshold value " obtained from this nor accurately, do not meet sensing required precision.Accordingly
Ground, the trigger unit 35 are set as only being in described in the corresponding voltage value of sensing signal of the sensing element 10 output
The computing unit 31 that the processing unit 30 is just triggered in default trigger voltage range V01-V02 is calculated, and in the sense
Triggering is not handled when surveying the corresponding voltage value of signal beyond outside (being less than or greater than) described default trigger voltage range V01-V02
The computing unit 31 of device 30.As needed, when the corresponding voltage value of sensing signal of the sensing element 10 output is in institute
When stating in default trigger voltage range V01-V02, the exportable high level signal of the trigger unit 35；Conversely, the triggering is single
Member 35 exports low level signal.The trigger unit 35 can realize its function using corresponding circuit, component or logic element
Energy.For example, the trigger unit 35 can be using specific configurations such as trigger, trigger circuit or even diodes.
Correspondingly, the default trigger voltage range V01-V02 of the sensor 101 corresponds to brake pedal 200 in tolerance
The position range L01-L02 allowed in range.Correspondingly, the sensor 101 senses obtained voltage signal and brake pedal
The linear correlativity in 200 position.More specifically, it is Lc that brake pedal 200, which presets moving distance,.Correspondingly, the brake
Pedal 200 preset moving distance Lc that is to say brake pedal 200 from initial free position Lf be moved to trigger position Lt away from
From.The brake pedal 200, which presets moving distance Lc, can be set to a constant, to ensure that in different initial (high
Degree) position brake pedal 200 when being trampled constant stroke (i.e. Lc), the sensor 101 can be touched accurately
It sends out and issues corresponding control signal.
In order to enable the trigger voltage threshold value that the sensor 101 obtains when installed to brake pedal 200 for the first time is not easy
It is modified, the processing unit 30 further includes closing unit 37.The closing unit 37 is for closing the processing unit 30
Computing function.It that is to say, when trigger voltage threshold value Vt is calculated in the processing unit 30, described in the closing unit closing
The computing function of processing unit 30.Correspondingly, the closing unit 37 can be corresponding switching device, switching circuit, corresponding
Switching logic program, even fuse etc. destroy 31 physical structure of computing unit component.In the present embodiment, institute
It states closing unit 37 to forbid reprograing in such a way that flag bit is arranged in single-chip microcontroller, so that the sensor 101 is for the first time
Use after powering on is to directly obtain sensing signal, and need not move through to calculate to obtain again and trigger the threshold value Vt that lights a cigarette.
Correspondingly, when brake pedal 200 is moved to default trigger position Lt, the output of the sensing unit 10 triggering letter
Number.The processing unit 30 receives the trigger signal and exports corresponding control signal.Specifically, the control signal is corresponding
In a voltage signal Vs.The control signal can be binary signal.Correspondingly, the corresponding binary system letter of the control signal
When number being " 0 ", the processing unit 30 exports low level signal Vl.The corresponding binary signal of the control signal is " 1 "
When, the processing unit 30 exports high level signal Vh.According to apply needs, at this point, the processing unit 30 export two into
Signal processed can be brake lamp switch signal or vehicle activation signal.It that is to say, the binary signal can be conducting or pass
The switching signal of disconnected brake lamp；The binary signal may be that brake pedal 200 is trampled to predeterminated position and carries out automobile
The signal of starting.
In order to facilitate that the processing of processing unit 30 obtains corresponding binary signal, the processing unit 30 is also wrapped
Include comparing unit 39.The comparing unit 39 be set as the corresponding voltage value of sensing signal for exporting the sensing element 10 with
Size between the corresponding voltage value of trigger voltage threshold value Vt.When the corresponding voltage value of the sensing signal is less than the triggering electricity
When pressing the corresponding voltage value of threshold value Vt, the sensor 30 exports low level signal；When the sensing signal is to drink fixed voltage
When being worth voltage value corresponding greater than the trigger voltage threshold value Vt, the sensor 30 exports high level signal.Correspondingly, described
High level signal can be the virtual value of triggering such as brake lamp conducting.The comparing unit 39 can corresponding circuit, compare
Device or the logical program for relying on single-chip microcontroller etc. realize its function.
In order to facilitate that the transmission of corresponding electric signal and the over all Integration performance of the promotion sensor 101, the sensing
Device 101 includes circuit board.The circuit board is used to support the processing unit 30 and sensing element 10.Correspondingly, the circuit
Plate is electrically connected with the processing unit 30 and sensing element 10, and carries out the transmission of corresponding electric signal.
As a preferred embodiment, the trigger signal that the processing unit 30 is exported is for on-off brake lamp
400 switching signal.Correspondingly, in order to facilitate that realizing the control to such as on-off of brake lamp 400, the sensor 101
It further include driving unit 70.The driving unit 70 can be corresponding driving circuit.The driving unit 70 receives the touching
It signals, and is turned on or off brake lamp 400 according to the trigger signal.
In order to enable 30 steady operation of the sensing element 10 and the processing unit, the sensor 101 further include steady
Press unit 60.Preferably, the sensor 101 receives the 12V supply voltage that automobile provides.The voltage regulation unit 60 is then by 12
Supply voltage stabilizes to 5V operating voltage, and is supplied to the Hall chip as sensing element 10, as the list of processing unit 30
Piece machine.In the present embodiment, the voltage regulation unit 60 include low pressure difference linear voltage regulator (Low Dropout Regulator,
Abbreviation LDO).
As an example, further illustrating the working principle of the sensor 101: the default triggering electricity of the sensor 101
Pressing range V01-V02 can be 1-4V.Correspondingly, the position range that 200 tolerance of brake pedal allows be (opposite Mr. Yu's object of reference
Distance) L01-L02 be 10-40mm.It is 20mm that the brake pedal 200, which presets moving distance Lc,.It is corresponding, preset constant voltage
Value Vc is then 2V.Then when brake pedal 200 is in free state (entrucking for the first time, not yet trampled), corresponding position Lf is
12mm, the corresponding initial voltage value Vf that the sensing element 10 obtains at this time is 1.2V, then the processing unit 30 calculates
To corresponding trigger voltage threshold value Vt 3.2V is obtained by 1.2V+2V read group total.It that is to say, the sensor 101 passes through
Entrucking for the first time, power on and (conduct to form conductive loops) operation can be obtained corresponding trigger voltage threshold value Vt.Hereafter, work as brake
Pedal 200 is trampled moving distance every time when being 20mm trigger positions such as (corresponding) normal dangers, the sensing element 10
Output corresponding voltage value is the trigger signal of 3.2V, and the processing unit 30 is made to export corresponding control signal, realizes
Such as the switch of brake lamp 400 is operated.
As another example, corresponding when brake pedal 200 is in free state (entrucking for the first time, not yet trampled)
Position Lf be 15mm, the corresponding initial voltage value Vf that the sensing element 10 obtains at this time is 1.5V, then the processing fills
It sets the corresponding trigger voltage threshold value Vt that 30 are calculated and 3.5V is obtained by 1.5V+2V read group total.It that is to say, the biography
Sensor 101 by entrucking for the first time, power on and (conduct to form conductive loops) operation can be obtained corresponding trigger voltage threshold value Vt.
Hereafter, described when it is 20mm (trigger positions such as corresponding normal danger) that brake pedal 200 is trampled moving distance every time
Sensing element 10 exports corresponding voltage value and is the trigger signal of 3.5V, and the processing unit 30 is made to export corresponding control
Signal processed is realized and is such as operated to the switch of brake lamp 400.
It that is to say, regardless of which kind of (height) position is the initial free state of brake pedal 200 be in, when the brake pedal 200
Mobile pre-determined distance (corresponding trigger position), the sensor 101 can be toggled and issue corresponding control signal.
Embodiment two:
Please continue to refer to Fig. 1, the utility model also provides a kind of sensor device 103 for vehicle brake pedal.Institute
Stating sensor device 103 includes supporting element 50, magnetic element 300 and the sensor 101 according to foregoing description.
The supporting element 50 is used to support the other structures of the sensor device 101.The supporting element 50 can be used for by
The sensor device 101 is fixedly installed on automobile.What as long as the concrete shape and construction of the supporting element 50 can satisfy
Support needs.In the present embodiment, the supporting element 50 can be injection-moulded housing.
The opposite automobile of the magnetic part 300 is kept fixed, is still arranged.The magnetic part 300 mentions in three-dimensional space
For the magnetic field of corresponding intensity.Correspondingly, the magnetic part 300 emits the magnetic line of force 308 in three-dimensional space.The magnetic part
As long as 300 type, specification and parameter can generate the magnetic field that can be sensed by the sensing element 10.The magnetic
Property part 300 can be magnet.Further, the magnetic part 300 can be permanent magnet or electromagnet.In the present embodiment, institute
Stating magnetic part 300 is permanent magnet.
Embodiment three:
Referring to Fig. 4, the utility model also provides a kind of method for sensing.The method for sensing is for sensing brake pedal
200 position.The method for sensing the following steps are included:
S110: sensing brake pedal 200 is in magnetic field strength when initial free state (primary state), and obtains initial sensing
Signal；The corresponding initial voltage value Vf of the initial sensing signal；
S120: a trigger voltage threshold value Vt is calculated according to the initial voltage value Vf；Vt pairs of the trigger voltage threshold value
Answer a trigger signal.
Correspondingly, the method for sensing can sense magnetic field strength using aforementioned sensing element 10, and obtain corresponding first
Beginning sensing signal.It is understood that sensing magnetic field strength when brake pedal 200 is in initial free state, this can be
The size and intensity in space locating for brake pedal 200 itself, or (relative position is permanent with the brake pedal 200 linkage setting
The magnetic field strength in space locating for sensing element 10 calmly).The sensing element 10 exports initial sensing signal to aforementioned processing
Device 30.Trigger voltage threshold value is calculated according to the corresponding initial voltage value Vf of initial sensing signal in the processing unit 30
Vt.Specifically, the mode of Vt is calculated in the processing unit 30 are as follows: Vf+Vc (preset constant voltage value)=Vt.
Please refer to fig. 5, preferably, the method for sensing is in the advance that the trigger voltage threshold value Vt is calculated
The following operation of row:
S102: judge whether the corresponding voltage value of sensing signal falls into default trigger voltage range V01-V02；
S104: when the corresponding voltage value of the sensing signal is fallen into default trigger voltage range V01-V02, triggering pair
The operation that trigger voltage threshold value Vt is calculated.
Correspondingly, the method for sensing can judge that the corresponding voltage value of sensing signal is using corresponding judging unit 36
It is no to fall into default trigger voltage range V01-V02, to avoid faulty operation, guarantee that the sensor 101 can only be for the first time
The operation calculated trigger voltage threshold value Vt is just carried out when entrucking.At this point, the touching being connect with the judging unit 36 communication (electricity)
Bill member 35 triggers the operation that computing unit 31 calculates trigger voltage threshold value Vt.Correspondingly, the trigger voltage threshold value
Vt can store in corresponding storage unit 33.
Referring to Figure 6 together, it is preferable that the laggard of the trigger voltage threshold value Vt is being calculated in the method for sensing
The following operation of row:
S112: the operation calculated again trigger voltage threshold value Vt is closed.
Correspondingly, the method for sensing can close the computing function of computing unit 31 using aforementioned closing unit 37.?
It is after the sensor 101 powers on for the first time, and trigger voltage threshold value Vt is calculated, that is, to forbid to trigger voltage threshold value Vt
The operation calculated again, to improve the response speed of 101 subsequent sense of the sensor operation.Preferably, the pass
Closing unit 37 can read in storage unit 33 with the presence or absence of the trigger voltage threshold value Vt.Exist when in the storage unit 33
When the trigger voltage threshold value Vt, the closing unit 37 executes the shutoff operation calculated again computing unit 31.
Referring to Figure 7 together, it is preferable that the laggard of the trigger voltage threshold value Vt is being calculated in the method for sensing
The following operation of row:
S130: sensing the position of brake pedal 200, exports control signal according to the trigger signal sensed.
At this point, brake pedal 200 is moved to trigger position, it is corresponding that sensing element 10 senses trigger voltage threshold value Vt
Trigger signal；The trigger signal triggering processing unit 30 output control signal.
Also referring to Fig. 8, further, it is preferable to ground, the trigger voltage threshold value is being calculated in the method for sensing
It is proceeded as follows after Vt:
S132: the position of brake pedal 200 is sensed, and exports sensing signal；
S134: the size between the corresponding voltage value of the sensing signal and trigger voltage threshold value Vt；
S136a: when the corresponding voltage value of sensing signal voltage value corresponding less than the trigger voltage threshold value Vt,
Export first control signal；
S136b: when the corresponding voltage value of sensing signal voltage value corresponding greater than the trigger voltage threshold value Vt,
Export second control signal.
At this point, the sensor 101 starts to sense work, the method for sensing can be sensed by sensing element 10 and be stopped
The corresponding position of vehicle pedal 200, and export sensing signal.The processing unit 30 then receives sensing signal, and by comparing single
Size between the corresponding voltage value of the sensing signal of the member 39 trigger voltage threshold value Vt corresponding with trigger signal.
Specifically, the comparing unit 39 can read the trigger voltage threshold value Vt being stored in storage unit 33.When the sensing is believed
When number corresponding voltage value is less than the trigger voltage threshold value Vt, first control signal is exported；When the sensing signal is corresponding
When voltage value is greater than the trigger voltage threshold value Vt, first control signal is exported.As one embodiment, the first control letter
Number can for disconnect brake lamp 400 or keep 400 OFF state of brake lamp signal；The first control signal can be conducting
Brake lamp 400 or the signal for keeping 400 illuminating state of brake lamp.
The above is only the utility model preferred embodiments, are not used to the limitation protection scope of the utility model, any
Modification, equivalent replacement or improvement within the spirit of the present invention etc. are all covered in the scope of the claims of the utility model.
Claims (18)
1. a kind of sensing device (103) for vehicle brake pedal, which is characterized in that the sensing device includes: sensing
Part (10), the sensing element are used to sense the magnetic field strength of magnetic element (300), and export sensing signal；When the sensing
For element (10) with after brake pedal (200) the linkage setting in free state, the sensing element exports initial sensing signal；
The initial sensing signal is corresponding an initial voltage value (Vf)；And
Processing unit (30), the processing unit and the sensing element (10) communicate to connect, to receive the sensing element institute
The sensing signal of output, and be arranged with obtaining corresponding trigger voltage threshold value (Vt) based on the initial sensing signal；The triggering
Voltage threshold corresponds to a trigger signal.
2. sensing device according to claim 1, it is characterised in that:
When brake pedal is moved to default trigger position, the sensing element exports trigger signal；
The processing unit (30) receives the trigger signal and exports control signal.
3. sensing device according to claim 2, it is characterised in that:
The control signal is brake lamp switch signal or vehicle activation signal.
4. sensing device according to claim 2, it is characterised in that:
The processing unit includes comparing unit (39)；
The comparing unit is set as voltage value and trigger voltage corresponding to the sensing signal of the output of sensing element described in comparison
Size between threshold value (Vt)；
When the corresponding voltage value of sensing signal voltage value corresponding less than the trigger voltage threshold value, the sensing device
Export first control signal；
When the corresponding voltage value of sensing signal voltage value corresponding greater than the trigger voltage threshold value, the sensing device
Export second control signal.
5. sensing device according to claim 4, it is characterised in that:
The first control signal is low level signal (Vl)；
The second control signal is high level signal (Vh).
6. sensing device according to claim 1, it is characterised in that:
The processing unit includes computing unit (31)；
Trigger voltage threshold value is calculated according to the corresponding initial voltage value of the initial sensing signal in the computing unit.
7. sensing device according to claim 6, it is characterised in that:
The computing unit sums the initial voltage value (Vf) and a preset constant voltage value (Vc), and obtains described
Trigger voltage threshold value (Vt).
8. sensing device according to claim 7, it is characterised in that:
The processing unit further includes storage unit (33)；
The storage unit stores the preset constant voltage value and the trigger voltage threshold value；
The computing unit and the storage unit communicate to connect.
9. sensing device according to claim 6, it is characterised in that:
The processing unit further includes judging unit (36) and trigger unit (35)；
The judging unit receives the sensing signal of sensing element (10) output；
When the judging unit (36), judgement show that the corresponding voltage value of the sensing signal falls into default trigger voltage range
(V01-V02) when interior, the trigger unit (35) triggers the computing unit.
10. sensing device according to claim 6, it is characterised in that:
The processing unit further includes closing unit (37)；
The closing unit and the computing unit communicate to connect；
After trigger voltage threshold value is calculated in the computing unit, the closing unit closes calculating again for the computing unit
Function.
11. sensing device according to claim 2 or 3, it is characterised in that:
When brake pedal is mobile, the sensing element exports linear trigger signal；
The control signal is a switching signal.
12. sensing device according to claim 11, it is characterised in that:
The sensing element is linear hall element.
13. sensing device according to claim 1, which is characterized in that further include:
Circuit board；
The sensing element (10) and the processing unit (30) are each provided on the circuit board, and with the circuit board electrical connection.
14. sensing device (103) according to claim 1, which is characterized in that further include:
Magnetic element (300), the magnetic element, which is used to link with brake pedal (200), to be arranged, and relative to sensor (101)
Reliable proximal and distal liftoff setting.
15. sensing device according to claim 14, it is characterised in that:
The magnetic element is magnet.
16. a kind of sensor for vehicle brake pedal, which is characterized in that the sensor includes:
Shell, the shell is for being installed on vehicle；With
Sensing element (10), the sensing element are used to sense the magnetic field strength of magnetic element (300), and export sensing signal；
After the sensing element (10) link setting with the brake pedal (200) in free state, the sensing element is defeated
Initial sensing signal out；The initial sensing signal is corresponding an initial voltage value (Vf)；
The initial voltage value (Vf) is used to determine the trigger voltage threshold value (Vt) of the sensor.
17. sensor according to claim 16, it is characterised in that:
When brake pedal is mobile, the sensing element exports linear trigger signal；
When brake pedal is moved to default trigger position, the sensing element exports trigger signal；
Processing unit (30) receives the trigger signal and exports control signal；
The control signal is a switching signal.
18. sensor according to claim 17, it is characterised in that:
The sensing element is linear hall element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820828797.8U CN208432209U (en) | 2018-05-30 | 2018-05-30 | Sensing device for vehicle brake pedal and the sensor for vehicle brake pedal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820828797.8U CN208432209U (en) | 2018-05-30 | 2018-05-30 | Sensing device for vehicle brake pedal and the sensor for vehicle brake pedal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208432209U true CN208432209U (en) | 2019-01-25 |
Family
ID=65100705
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820828797.8U Active CN208432209U (en) | 2018-05-30 | 2018-05-30 | Sensing device for vehicle brake pedal and the sensor for vehicle brake pedal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208432209U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553572A (en) * | 2018-05-30 | 2019-12-10 | 泰科电子(上海)有限公司 | Sensing device for vehicle brake pedal, sensor for vehicle brake pedal and sensing method |
-
2018
- 2018-05-30 CN CN201820828797.8U patent/CN208432209U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110553572A (en) * | 2018-05-30 | 2019-12-10 | 泰科电子(上海)有限公司 | Sensing device for vehicle brake pedal, sensor for vehicle brake pedal and sensing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100498365C (en) | Calculation device calculating available capacity of secondary battery and method of calculating the same | |
| CN110099325A (en) | A kind of wireless headset enters box detection method, device, wireless headset and earphone products | |
| CN208432209U (en) | Sensing device for vehicle brake pedal and the sensor for vehicle brake pedal | |
| CN202996048U (en) | Infrared reflection-type wireless detector and parking lot parking spot control system | |
| CN107911919B (en) | Control device and method of remote controller, storage medium, remote controller and equipment | |
| CN110536810A (en) | From energy sending device to the method for the wireless energy transfer of electrical appliance and the wireless energy sending device of execution this method | |
| CN208589803U (en) | Charging unit and mobile robot charging system | |
| CN103412670A (en) | Touch system, charging system and charging method of touch device | |
| CN104124773B (en) | Array wireless power emission system and its reception end locating method | |
| CN104380127A (en) | Device for determining a property of a battery and method for operating such a device | |
| CN203600910U (en) | Tire state detection device based on Bluetooth | |
| CN105892609B (en) | A kind of method and intelligent terminal of terminal booting and identification memory card synchronous operation | |
| CN205156949U (en) | Aerogenerator fault detection device | |
| CN109625132A (en) | A kind of electric bicycle anti-theft device | |
| US20130204486A1 (en) | Touch-control tire pressure sensor device and its setting method | |
| CN114696478A (en) | Wireless charging alignment method and device, storage medium and wireless charging seat | |
| CN205139344U (en) | Power display device and electronic equipment | |
| CN202545794U (en) | Neutral-gear switch of automobile gearbox | |
| EP1434040A3 (en) | Fuel quantity determination method | |
| CN204925350U (en) | Permanent magnetism on -off mechanism functional test platform | |
| CN103175599A (en) | Portable electronic scale and application thereof in the field of luggage anti-loss anti-theft quick search | |
| CN203450089U (en) | Anti-theft alarm based on distance detection | |
| CN109814739A (en) | A kind of active capacitance pen | |
| CN209992033U (en) | Novel wireless bluetooth photoelectricity direct-reading water gauge of low-power consumption | |
| CN111504389B (en) | Detection device for battery replacing mechanism of electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |