CN207644315U - A kind of horn circuit - Google Patents
A kind of horn circuit Download PDFInfo
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- CN207644315U CN207644315U CN201721831091.9U CN201721831091U CN207644315U CN 207644315 U CN207644315 U CN 207644315U CN 201721831091 U CN201721831091 U CN 201721831091U CN 207644315 U CN207644315 U CN 207644315U
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- loudspeaker
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Abstract
The utility model provides a kind of horn circuit, which includes：Power supply circuit, horn switch, the first relay assembly, loudspeaker, potential detection module, temperature sensor and singlechip controller；Wherein, potential detection module is used to detect the potential difference of loudspeaker, and temperature sensor is used to detect the temperature of loudspeaker；The temperature for the loudspeaker that singlechip controller is used to obtain the potential difference for the loudspeaker that potential detection module detects and temperature sensor detects；When the temperature of loudspeaker is less than the first preset potential differences threshold value not less than the potential difference of the first preset temperature threshold and/or loudspeaker, controls power supply circuit and horn switch disconnects.In this way, in sequentially connected first relay assembly of horn switch and loudspeaker, there will be no electric currents, and then avoid loudspeaker since temperature is excessively high or short-circuit ablated, and horn circuit is avoided integrally to be damaged.
Description
Technical field
The utility model is related to technical field of vehicle, more particularly to a kind of horn circuit.
Background technology
In recent years, increasingly complicated with traffic environment, it often will appear pedestrian or the emergencies such as vehicle is walked, therefore
The frequency of use of loudspeaker is higher and higher in vehicle.
Horn circuit in the prior art typically protects horn circuit using the fuse in circuit.Specifically, protecting
Dangerous silk can fuse when electric current is excessive in circuit, and then realize protection circuit.But since the sensitivity of fuse is relatively low,
When short circuit or loudspeaker occur for the element in horn circuit when the temperature is excessively high, fuse tends not to fuse in time, and then can make
It is ablated to obtain the elements such as loudspeaker, horn circuit is integrally damaged.
Utility model content
In view of this, the utility model is directed to a kind of horn circuit, in order to solve due to fuse sensitivity compared with
It is low so that fuse cannot fuse in time in high temperature or element short, and then cause the elements such as loudspeaker ablated, to loudspeaker electricity
The problem of road integrally damages.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of horn circuit, the circuit may include：Power supply circuit, horn switch, the first relay assembly, loudspeaker, electricity
Gesture detection module, temperature sensor and singlechip controller；
Wherein, the singlechip controller respectively with the power supply circuit, the potential detection module and the temperature
Sensor connects；
The power supply circuit is connect with the horn switch, and the horn switch is connect with first relay assembly,
First relay assembly is connect with the loudspeaker, and the loudspeaker are connect with the potential detection module；
The potential detection module is used to detect the potential difference of the loudspeaker, and the temperature sensor is for detecting the loudspeaker
Temperature；
The singlechip controller be used for obtain the loudspeaker that the potential detection module detects potential difference and
The temperature for the loudspeaker that the temperature sensor detects；It is not less than the first preset temperature threshold in the temperature of the loudspeaker,
And/or the potential difference of the loudspeaker be less than the first preset potential differences threshold value when, control the power supply circuit and the horn switch
It disconnects.
Further, first relay assembly is connect by least two output channels with the loudspeaker, and different
The resistance value of output channel is different；
The power supply circuit includes power supply and the second relay；
The singlechip controller controls the power supply circuit and the horn switch by disconnecting second relay
It disconnects.
Further, first relay assembly is also connect with the singlechip controller；
The singlechip controller is additionally operable to when the temperature of the loudspeaker is less than the first preset temperature threshold, according to described
The temperature of loudspeaker selects the first object output channel of the first relay assembly connection to open the loudspeaker；
Wherein, the resistance value of the first object output channel is closed with the temperature range belonging to the temperature of the loudspeaker in positive
System.
Further, the potential detection module also connects with the horn switch and first relay assembly respectively
It connects；
The potential detection module is additionally operable to detect the potential difference of the horn switch and first relay assembly
Potential difference；
The singlechip controller is additionally operable to obtain the potential difference of the horn switch of the potential detection module detection
And the potential difference of first relay assembly；It is less than the second preset potential differences threshold value in the potential difference of the horn switch
When and/or first relay assembly potential difference be less than third preset potential differences threshold value when, control the power supply circuit and
The horn switch disconnects.
Further, the circuit further includes：
Magnetic induction sensor, the magnetic induction sensor is connect with the loudspeaker respectively and the singlechip controller connects
It connects；
The magnetic induction sensor in the magnetic induction intensity for detecting the loudspeaker in preset duration for being persistently more than
When default magnetic induction intensity, the first prompting message is sent to the singlechip controller；
The singlechip controller is additionally operable to when receiving first prompting message, controls the power supply circuit and institute
State horn switch disconnection.
Further, the circuit further includes：Fuse, low pressure conversion module；
The fuse is connect with the horn switch and first relay assembly respectively；
The low pressure conversion module is connect with the singlechip controller；
The low pressure conversion module is used to the output voltage of external power supply being converted to target voltage, and target power is defeated
Enter to the singlechip controller.
Further, the circuit further includes：
Car body control module, the car body control module are connect with the singlechip controller；
Car networking terminal, the car networking terminal are connect with the car body controller；
The singlechip controller is additionally operable to after controlling the power supply circuit and the horn switch and disconnecting, to described
Car body control module sends the first standby signal；
Correspondingly, the car body control module is used for when receiving first standby signal, to car networking end
End sends the second standby signal；
The car networking terminal be used for when receiving second standby signal, by network to the car networking end
The mobile terminal of end binding sends loudspeaker state reminder message.
Further, the circuit further includes：
Baroceptor, the baroceptor are connect with the singlechip controller；
The singlechip controller is additionally operable to obtain the target air pressure of the baroceptor acquisition, and according to the target
Air pressure selects the second target output channel of the first relay assembly connection to open the loudspeaker；
Wherein, the air pressure range belonging to the resistance value Yu the target air pressure of the second target output channel is closed in positive
System.
Further, the circuit further includes：
Current sensor, the current sensor are connect with the singlechip controller, and the current sensor is for examining
Survey the electric current of the loudspeaker；
Counting module, the counting module are connect with the singlechip controller；
The singlechip controller is additionally operable to acquire the current value that the current sensor detects, and according to the electric current
Value, determines whether the loudspeaker work；When the loudspeaker work, controls the counting module and counted.
Further, the circuit further includes：
Parameter memory module, the parameter memory module are connect with the controller；
The singlechip controller is used to obtain the state parameters of the loudspeaker with the fixed cycle, and by the state parameter
It stores to the parameter memory module；
The state parameter include the voltage of the loudspeaker, the electric current of the loudspeaker and the loudspeaker temperature in extremely
Few one kind.
In the horn circuit of the utility model, potential detection module can detect the potential difference of loudspeaker, temperature sensor
The temperature of loudspeaker can be detected, singlechip controller can control power supply according to the temperature and potential difference of the loudspeaker detected
Circuit and horn switch disconnect.In this way, in sequentially connected first relay assembly of horn switch and loudspeaker, there will be no electricity
Stream, and then loudspeaker are avoided since temperature is excessively high or short-circuit ablated, it avoids horn circuit and is integrally damaged.
The another object of the utility model is to propose a kind of vehicle, to solve since fuse sensitivity is relatively low so that
Fuse cannot fuse in time in high temperature or element short, and then cause the elements such as loudspeaker ablated, to horn circuit entirety
The problem of damaging.
In order to achieve the above objectives, the technical solution of the utility model is realized in：
A kind of vehicle, the vehicle include aforementioned any horn circuit.
Possessed advantage is identical compared with the existing technology with above-mentioned horn circuit for the vehicle, and details are not described herein.
Description of the drawings
The attached drawing for constituting the part of the utility model is used to provide a further understanding of the present invention, this practicality is new
The illustrative embodiments and their description of type are not constituted improper limits to the present invention for explaining the utility model.
In attached drawing：
Fig. 1 is a kind of one of the schematic diagram of horn circuit described in the utility model embodiment；
Fig. 2 is the two of the schematic diagram of a kind of horn circuit described in the utility model embodiment.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
Embodiment one
Referring to Fig.1, show that one of the schematic diagram of horn circuit of the utility model embodiment, the horn circuit can wrap
It includes：
Power supply circuit 11, horn switch 12, the first relay assembly 13, loudspeaker 14, potential detection module 15, temperature sensing
Device 16 and singlechip controller 17.
Wherein, singlechip controller 17 can respectively with power supply circuit 11, potential detection module 15 and temperature sensor
16 connections, power supply circuit 11 can be connect with horn switch 12, and horn switch 12 can be connect with the first relay assembly 13, the
One relay assembly 13 can be connect with loudspeaker 14, and loudspeaker 14 can be connect with potential detection module 15.
Further, potential detection module 15 can be used for detecting the potential difference of loudspeaker 14, and temperature sensor 16 can be used
In the temperature of detection loudspeaker 14, singlechip controller 17 can be used for obtaining the electricity for the loudspeaker 14 that potential detection module 15 detects
The temperature for the loudspeaker 14 that potential difference and temperature sensor 16 detect, and it is not less than the first preset temperature threshold in the temperature of loudspeaker 14
When the potential difference of value and/or loudspeaker 14 is less than the first preset potential differences threshold value, controls the power supply circuit 11 and the loudspeaker are opened
12 are closed to disconnect.
Wherein, which can be determined according to practical experience, which can
Exemplary to be the temperature that loudspeaker can be caused ablated, which can be 75 degrees Celsius (DEG C), this first
Preset potential differences threshold value can be potential difference when loudspeaker are in normal condition.Specifically, the temperature when loudspeaker is not less than first
When preset temperature threshold, it is believed that loudspeaker temperature is excessively high may be ablated, when the potential difference of loudspeaker is less than the first preset potential
When poor threshold value, it is believed that loudspeaker may be because that short circuit is ablated, therefore, and in the utility model embodiment, singlechip controller
The first preset potential differences threshold can be less than not less than the potential difference of the first preset temperature threshold and/or loudspeaker in the temperature of loudspeaker
When value, controls power supply circuit and horn switch disconnects, and then avoid loudspeaker ablated.
In conclusion a kind of horn circuit provided by the utility model, potential detection module can detect the potential of loudspeaker
Difference, temperature sensor can detect the temperature of loudspeaker, and singlechip controller can be according to the temperature and electricity of the loudspeaker detected
Potential difference, controls power supply circuit and horn switch disconnects.In this way, sequentially connected first relay assembly of horn switch and loudspeaker
In there will be no electric currents, and then avoid loudspeaker since temperature is excessively high or short-circuit ablated, avoid horn circuit and integrally damaged
It is bad.
Embodiment two
With reference to Fig. 2, the two of the schematic diagram of the horn circuit of the utility model embodiment are shown, which can wrap
It includes：
Power supply circuit 21, horn switch 22, fuse 23, the first relay assembly 24, loudspeaker 25, potential detection module
26, temperature sensor 27, singlechip controller 28, low pressure conversion module 29, magnetic induction sensor 210, car body control module
211, car networking terminal 212, baroceptor 213, current sensor 214, counting module 215 and parameter memory module 216.
Wherein, singlechip controller 28 respectively with power supply circuit 21, the first relay assembly 24, potential detection module 26 with
And temperature sensor 27 connects, power supply circuit 21 is connect with horn switch 22, and horn switch 22 is connect with fuse 23, fuse
23 can connect with the first relay assembly 24, and the first relay assembly 24 can be connect with loudspeaker 25.The utility model is implemented
In example, the possibility that each element is ablated in horn circuit can be further decreased by the way that fuse is arranged, ensure that loudspeaker electricity
Road is not damaged.
Further, potential detection module 26 can be connect with loudspeaker 25.Specifically, potential detection module 26 and loudspeaker 25
When connection, can be exactly and one end that loudspeaker 25 are connect with the first relay assembly 24 and loudspeaker with the both ends of loudspeaker 25
25 output end connection, in order to detect the potential difference of loudspeaker 25.Temperature sensor 27 can be set to the periphery of loudspeaker 25, use
In the temperature of detection loudspeaker 25.Singlechip controller 28 can be used for obtaining the electricity for the loudspeaker 25 that potential detection module 26 detects
The temperature for the loudspeaker 25 that potential difference and temperature sensor 27 detect, and it is not less than the first preset temperature threshold in the temperature of loudspeaker 25
When the potential difference of value and/or loudspeaker 25 is less than the first preset potential differences threshold value, controls power supply circuit 21 and horn switch 22 is disconnected
It opens.
Optionally, power supply circuit 21 may include power supply 21a and the second relay 21b, singlechip controller 28
Power supply circuit 21 and the disconnection of horn switch 22 can be controlled by disconnecting the second relay 21b.
In practical application scene, when driver's long-press or frequently honk when or car horn since circuit is asked
When topic is yowled, the temperature of loudspeaker can increase, the temperature when temperature of loudspeaker can be higher than normal condition at this time, further,
When loudspeaker are by short circuit, the potential difference when potential difference of loudspeaker can be less than normal condition.Therefore, the utility model embodiment
In, singlechip controller can be by the temperature of collected loudspeaker and the temperature that loudspeaker can be caused ablated, i.e., the first default temperature
Threshold value is spent, the potential difference of loudspeaker and loudspeaker be in potential difference when normal condition, is i.e. the first preset potential differences threshold value carries out pair
Than if the temperature of collected loudspeaker is not less than the first preset temperature threshold, being preset alternatively, the potential difference of loudspeaker is less than second
Potential difference threshold value, singlechip controller can disconnect the second relay so that power supply circuit stops power supply, so that loudspeaker are electric
Electric current is not had in each element on road, loudspeaker is avoided and other elements is ablated.
Further, potential detection module 26 can also connect with horn switch 22 and the first relay assembly 24 respectively
It connects, potential detection module 26 can be also used for the potential difference of detection horn switch 22 and the potential of the first relay assembly 24
Difference.Specifically, when potential detection module 26 and horn switch 22 connect, can be exactly and loudspeaker with the both ends of horn switch 22
Switch 22 is connected with one end that the one end connecting the second relay 21b and horn switch 22 are connect with fuse 23, so as to
In the potential difference of detection horn switch 22.Correspondingly, when potential detection module 26 and the first relay assembly 24 connect, and with
The both ends of first relay assembly 24 connect.
Correspondingly, singlechip controller 28 can be also used for obtaining the electricity of the horn switch 22 of 26 detection of potential detection module
The potential difference of potential difference and the first relay assembly 24, and it is less than the second preset potential differences threshold value in the potential difference of horn switch 22
When and/or the potential difference of the first relay assembly 24 when being less than third preset potential differences threshold value, control power supply circuit 21 and loudspeaker
Switch 22 disconnects.
Wherein, which can be potential difference when horn switch is in normal condition, the third
Preset potential differences threshold value can be potential difference when the first relay assembly is in normal condition.In the utility model embodiment,
The potential difference in the potential difference of horn switch and the potential difference of the first relay assembly is detected by potential detection module, then
By singlechip controller according to the potential difference of horn switch and the potential difference of the first relay assembly, control power supply circuit and
Horn switch disconnects, can to avoid due to horn switch or the first relay assembly short circuit it is ablated, while also avoiding and loudspeaker
Switch or the ablated problem of loudspeaker of the first relay assembly connection.It should be noted that in practical application, can also incite somebody to action
Potential detection module is connect with the other elements in horn circuit, for example, fuse.By detecting the potential difference of the element, come
Judge whether the element is short-circuit, and then avoid the element ablated, the utility model embodiment does not limit this.
Further, the first relay assembly 24 may include connect with loudspeaker 25 by least two output channels, and
The resistance value of different output channels is different, and the first relay assembly 24 can also be connect with singlechip controller 28, microcontroller control
Device 28 can be also used for loudspeaker 25 temperature be less than the first preset temperature threshold when, according to the temperature of loudspeaker 25 selection first after
The first object output channel that electric appliance component 24 connects opens loudspeaker 25, wherein the resistance value and loudspeaker of the first object output channel
25 temperature belonging to temperature range be in positive relationship.
In the utility model embodiment, when the temperature of loudspeaker is less than the first preset temperature threshold, it is possible to ablated
, at this point, singlechip controller can select first object output channel according to the temperature of loudspeaker, specifically, microcontroller controls
Device can be on loudspeaker periphery temperature it is higher when, select the bigger output channel of resistance value, to reduce the electric current by loudspeaker, prevent
Only loudspeaker are ablated, while can ensure that loudspeaker can work normally.Exemplary, which can be 75
DEG C, the developer of vehicle can set in singlechip controller and store multiple temperature ranges, multiple temperature model in advance
It may include 75 DEG C of T≤40 DEG C, 65 DEG C of 40 DEG C≤T ＜ and 65 DEG C≤T ＜ to enclose, when the temperature of loudspeaker be in temperature range T≤
When in 40 DEG C, select corresponding resistance value for the output channel of R1, when the temperature of loudspeaker is in 65 DEG C of 40 DEG C≤T of temperature range ＜
When, select corresponding resistance value for the output channel of R2, when the temperature of loudspeaker is in 75 DEG C of 65 DEG C≤T of temperature range ＜, selection
The output channel that corresponding resistance value is R3, wherein and R1 ＜ R2 ＜ R3.It should be noted that can be in first relay assembly
The access that one resistance value is infinitely great is set, for example, in Fig. 2 the place of R4 access, singlechip controller can be in loudspeaker
It when temperature is not less than the first preset temperature threshold, selects the resistance value for infinitely great access, that is, is exactly the access unlatching where R4
Loudspeaker so that do not have electric current to pass through in loudspeaker, and then avoid loudspeaker ablated.
Optionally, low pressure conversion module 29 can be connect with singlechip controller 28.Further, low pressure conversion module 29
It can be used for the output voltage of external power supply being converted to target voltage, and target power be input to singlechip controller 28.
In the utility model embodiment, which can be the power supply powered exclusively for singlechip controller, due to external power supply
Voltage it is generally higher, generally 12V, and the operating voltage of singlechip controller is relatively low, generally 5V, therefore low by being arranged
Pressure conversion module the voltage of external power supply can be converted to the voltage suitable for singlechip controller, for example, by 12V convert to
5V, and then ensure that singlechip controller can work normally.
Further, magnetic induction sensor 210 can be connect with loudspeaker 25 and singlechip controller 28 respectively.Magnetic induction
Sensor 210 can be used for persistently being more than default magnetic induction intensity in preset duration in the magnetic induction intensity for detecting loudspeaker 25
When, the first prompting message is sent to singlechip controller 28, singlechip controller 28 is additionally operable to receiving the first prompting message
When, control power supply circuit 21 is disconnected with horn switch 22.
Magnetic induction intensity when loudspeaker work normally changes in alternating rule, will when short circuit occurs in trumpet
Constant magnetic induction intensity is transformed to by the magnetic induction intensity of alternation, therefore, when magnetic induction sensor detects the magnetic strength of loudspeaker
When intensity being answered persistently to be more than default magnetic induction intensity in preset duration, it may be determined that short circuit, and then monolithic occurs in trumpet
Machine controller can control power supply circuit and be disconnected with horn switch, so that not having electric current to pass through in loudspeaker, avoid loudspeaker quilt
Ablation.In practical application, the resistance value that the connection of the first relay assembly can also be connected in singlechip controller is the output of infinity
Access, to make there is no electric current to flow through in loudspeaker in conducting, and then effective protection loudspeaker, avoid the damage for causing loudspeaker.
Further, car body control module 211 can be connect with singlechip controller 28, and car networking terminal 212 can be with
Car body control module 211 connects.Singlechip controller 28 can be also used for disconnecting in control power supply circuit 21 and horn switch 22
Later, the first standby signal is sent to car body control module 211.Correspondingly, car body control module 211 can be used for receiving
When the first standby signal, the second standby signal is sent to car networking terminal 212, car networking terminal 212 can be used for receiving
When the second standby signal, loudspeaker state reminder message is sent to the mobile terminal bound with car networking terminal 212 by network.
Specifically, the loudspeaker state reminder message can serve to indicate that loudspeaker cannot temporarily use, the utility model is implemented
In example, after being disconnected in control power supply circuit and horn switch, loudspeaker state reminder message is sent to mobile terminal, so as to
It cannot temporarily be used in reminding the current loudspeaker of user so that user can make counter-measure in time.It should be noted that monolithic
Machine controller can transmit voltage signal, and car body control module can transmit CAN (Controller Area Network, control
Device local area network) signal, car networking terminal can carry with transmission network signal, therefore when needing the mobile terminal to car owner
When waking up, singlechip controller can transmit voltage signal to car body control module, and then car body control module can be to car networking
Terminal transmission CAN signal, and then car networking terminal could be to the mobile terminal transmission network signal of car owner, to remind car owner current
Loudspeaker cannot temporarily use, and enable a user to make counter-measure in time.
In addition, car body control module can also be connect with the background server of vehicle, to receive microcontroller control
When the first standby signal that device is sent, third standby signal can be sent to background server, to which background server can be right
The problem of loudspeaker of the vehicle are occurred is recorded, convenient for carrying out data inspection when after-sales service.
Further, singlechip controller 28 can be also used for obtaining the target air pressure that baroceptor 213 acquires, and root
The second target output channel of the first relay assembly 24 connection is selected to open loudspeaker 25 according to target air pressure.Wherein, the second target
The resistance value of output channel and the air pressure range belonging to target air pressure are in positive relationship.
Car horn is by internal diaphragm vibration sounding, however, since there are gas between the area of Different Altitude
Pressure difference, therefore, when driver, which drives vehicle, to drive a vehicle from plains region to highlands, the diaphragm of car horn is in inside air pressure
In the case of constant, external atmospheric pressure will continuously decrease, and will reduce therewith to the Oscillation Amplitude of diaphragm, car horn is caused to exist
The sound that the higher area of height above sea level is sent out is relatively low, and then when needing whistle, can not be carried out to pedestrian around and vehicle effectively alert
Show, reduces the safety of driving.In general, the higher regional air pressure of height above sea level is relatively low, the lower local air pressure of height above sea level is higher, this reality
With in new embodiment, baroceptor can acquire the air pressure on loudspeaker periphery, and singlechip controller can obtain air pressure sensing
The air pressure of device acquisition selects the second target output channel of the first relay assembly connection to open loudspeaker, since the second target is defeated
Go out the resistance value of access and the air pressure belonging to current gas pressure encloses and can that is to say that the air pressure on loudspeaker periphery is lower in positive relationship, it is single
The output channel that piece machine controller will select resistance value smaller, when relatively low to the air pressure around loudspeaker, singlechip controller can
With the output channel for selecting resistance value smaller, to input larger electric current to loudspeaker, by improving the input current of loudspeaker, Neng Gouti
High loudspeaker ensure loudspeaker in high altitude localities in the whistle volume in low pressure area namely the whistle volume of high altitude localities
Also pedestrian around and vehicle can effectively be warned, improves the safety of driving.
Exemplary, the developer of vehicle can set in singlechip controller and store multiple air pressure ranges in advance,
Multiple air pressure range may include P≤72Pa, 72Pa≤P ＜ 82Pa, 82Pa≤＜ P ＜ 92Pa and P >=92Pa, in target gas
When pressure is belonged in air pressure range P≤72Pa, it is the output channel of R1 to select corresponding resistance value, is belonged in air pressure model in target air pressure
When enclosing in 72Pa≤P ＜ 82Pa, select corresponding resistance value for the output channel of R2, target air pressure belong to air pressure range 82Pa≤
When in P ＜ 92Pa, select corresponding resistance value for the output channel of R3, when target air pressure belongs in air pressure range P >=92Pa, choosing
Select the output channel that corresponding resistance value is R4, and R1 ＜ R2 ＜ R3 ＜ R4.
Further, current sensor 214 and counting module 215 are connect with singlechip controller 28, current sense
Device 214 can be arranged around loudspeaker 25, and to detect the electric current of loudspeaker 25, singlechip controller can be used for acquiring electric current and pass
The current value that sensor 214 detects, and according to current value, determine whether loudspeaker 25 work.Further, singlechip controller 28
It can be also used for when loudspeaker 25 work, control counting module 215 is counted.
In practical application scene, electric current when electric current when loudspeaker work does not work from loudspeaker is different, and the utility model is real
Shi Zhong, current range when singlechip controller can work loudspeaker current range as a comparison, collected electric current is passed
The current value that sensor detects is compared with comparison current range, if the two matches, it is determined that loudspeaker work, if the two is not
Matching, it is determined that loudspeaker do not work.It is exemplary, it is assumed that between electric current when loudspeaker work is 5.5 amperes of (A)~6A, then controlling
Device processed can will determine that comparison current range is 5.5A~6A, it is assumed that the electric current that the collected current sensor of controller detects
Value is 5.7A, and since the current value 5.7A detected is in comparison current range 5.5A~6A, controller can determine loudspeaker
Work.
In the utility model embodiment, work of the loudspeaker before failure can be counted by the way that counting module is arranged
Number, in this way, when loudspeaker break down, the work times that maintenance personal can count on according to counting module analyze loudspeaker
Working condition, for example, the frequency range etc. that loudspeaker break down, and then to be carried for the repair of loudspeaker and improvement in subsequent process
Reference data is supplied.
Further, parameter memory module 216 can be connect with singlechip controller 28, and singlechip controller 28 can be used
In the state parameter for obtaining loudspeaker 25 with the fixed cycle, and state parameter is stored to parameter memory module 216.
Specifically, the parameter memory module 216 can be a memory, the fixed cycle can according to actual demand come
Setting.Exemplary, which can be 30 seconds/time.Further, the state parameter may include loudspeaker 25 voltage,
The electric current of loudspeaker 25 and at least one of the temperature of loudspeaker 25, singlechip controller 28 can be from current sensors 214
The electric current for obtaining loudspeaker 25 obtains the potential difference of loudspeaker 25 from potential detection module 26, that is, is exactly the voltage of loudspeaker 26, from
The temperature of loudspeaker 25, the electric current that then will be got are obtained in temperature sensor 27, voltage and temperature are stored to parameter and stored
In module 216.
In the utility model embodiment, the state parameter of loudspeaker is acquired by singlechip controller, and is stored to parameter and deposited
It stores up in module, when loudspeaker break down, maintenance personal can read the state ginseng of the loudspeaker stored in the parameter memory module
Number, to determine the working condition before loudspeaker failure, and then to be provided for the repair of loudspeaker and improvement in subsequent process
Reference data.
It should be noted that can also include one in another alternative embodiment of the utility model, in horn circuit
Voltage of voltage regulation, the regulator circuit can be made of zener diode, which can connect with loudspeaker 25, by for loudspeaker
A 25 external regulator circuits can further decrease the ablated situation of loudspeaker and occur.
In conclusion a kind of horn circuit provided by the utility model, potential detection module can detect the potential of loudspeaker
Difference, temperature sensor can detect the temperature of loudspeaker, and singlechip controller can be controlled according to the temperature and potential difference of loudspeaker
Power supply circuit and horn switch disconnect.In this way, would not in sequentially connected first relay assembly of horn switch and loudspeaker
There is electric current, and then avoid loudspeaker since temperature is excessively high or short-circuit ablated, avoids horn circuit and be integrally damaged.Meanwhile
When loudspeaker break down, since parameter memory module stores the state parameter before loudspeaker break down, counting module is deposited
The work times before loudspeaker break down are stored up, and then to provide reference for the repair of loudspeaker and improvement in subsequent process
Data reduce repair and improved difficulty.
Embodiment three
The utility model embodiment additionally provides a kind of vehicle, and the vehicle includes aforementioned any horn circuit.
In the utility model embodiment, potential detection module can detect the potential difference of loudspeaker, and temperature sensor can be with
The temperature of loudspeaker is detected, singlechip controller can control power supply circuit and loudspeaker are opened according to the temperature and potential difference of loudspeaker
Shutdown is opened.In this way, in sequentially connected first relay assembly of horn switch and loudspeaker, there will be no electric currents, and then avoid
Loudspeaker avoid horn circuit and are integrally damaged since temperature is excessively high or short-circuit ablated.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection domain within.
Claims (10)
1. a kind of horn circuit, which is characterized in that the circuit includes：Power supply circuit, horn switch, the first relay assembly,
Loudspeaker, potential detection module, temperature sensor and singlechip controller；
Wherein, the singlechip controller respectively with the power supply circuit, the potential detection module and the temperature sensing
Device connects；
The power supply circuit is connect with the horn switch, and the horn switch is connect with first relay assembly, described
First relay assembly is connect with the loudspeaker, and the loudspeaker are connect with the potential detection module；
The potential detection module is used to detect the potential difference of the loudspeaker, and the temperature sensor is for detecting the loudspeaker
Temperature；
The singlechip controller is used to obtain the potential difference of the loudspeaker that the potential detection module detects and described
The temperature for the loudspeaker that temperature sensor detects；It is not less than the first preset temperature threshold in the temperature of the loudspeaker, and/or
When the potential difference of the loudspeaker is less than the first preset potential differences threshold value, controls the power supply circuit and the horn switch disconnects.
2. circuit according to claim 1, which is characterized in that first relay assembly is logical by least two outputs
Road is connect with the loudspeaker, and the resistance value of different output channels is different；
The power supply circuit includes power supply and the second relay；
By disconnecting, second relay controls the power supply circuit to the singlechip controller and the horn switch disconnects.
3. circuit according to claim 2, which is characterized in that first relay assembly is also controlled with the microcontroller
Device connects；
The singlechip controller is additionally operable to when the temperature of the loudspeaker is less than the first preset temperature threshold, according to the loudspeaker
Temperature select the first object output channel of first relay assembly connection to open the loudspeaker；
Wherein, the resistance value of the first object output channel and the temperature range belonging to the temperature of the loudspeaker are in positive relationship.
4. circuit according to claim 1, which is characterized in that the potential detection module also respectively with the horn switch
And the first relay assembly connection；
The potential detection module is additionally operable to the electricity for detecting the potential difference of the horn switch and first relay assembly
Potential difference；
The singlechip controller be additionally operable to obtain the horn switch of the potential detection module detection potential difference and
The potential difference of first relay assembly；When the potential difference of the horn switch is less than the second preset potential differences threshold value, and/
Or the potential difference of first relay assembly be less than third preset potential differences threshold value when, control the power supply circuit and the loudspeaker
Switch disconnects.
5. circuit according to claim 1, which is characterized in that the circuit further includes：
Magnetic induction sensor, the magnetic induction sensor is connect respectively with the loudspeaker and singlechip controller connection；
The magnetic induction sensor is used to persistently be more than in preset duration in the magnetic induction intensity for detecting the loudspeaker default
When magnetic induction intensity, the first prompting message is sent to the singlechip controller；
The singlechip controller is additionally operable to when receiving first prompting message, controls the power supply circuit and the loudspeaker
Switch disconnects.
6. circuit according to claim 1, which is characterized in that the circuit further includes：Fuse, low pressure conversion module；
The fuse is connect with the horn switch and first relay assembly respectively；
The low pressure conversion module is connect with the singlechip controller；
The low pressure conversion module is used to the output voltage of external power supply being converted to target voltage, and target power is input to
The singlechip controller.
7. circuit according to claim 1, which is characterized in that the circuit further includes：
Car body control module, the car body control module are connect with the singlechip controller；
Car networking terminal, the car networking terminal are connect with the car body controller；
The singlechip controller is additionally operable to after controlling the power supply circuit and horn switch disconnection, to the vehicle body
Control module sends the first standby signal；
Correspondingly, the car body control module is used for when receiving first standby signal, sent out to the car networking terminal
Send the second standby signal；
The car networking terminal is used for when receiving second standby signal, is tied up to the car networking terminal by network
Fixed mobile terminal sends loudspeaker state reminder message.
8. circuit according to claim 2, which is characterized in that the circuit further includes：
Baroceptor, the baroceptor are connect with the singlechip controller；
The singlechip controller is additionally operable to obtain the target air pressure of the baroceptor acquisition, and according to the target air pressure
The second target output channel of the first relay assembly connection is selected to open the loudspeaker；
Wherein, the air pressure range belonging to the resistance value Yu the target air pressure of the second target output channel is in positive relationship.
9. circuit according to claim 1, which is characterized in that the circuit further includes：
Current sensor, the current sensor are connect with the singlechip controller, and the current sensor is for detecting institute
State the electric current of loudspeaker；
Counting module, the counting module are connect with the singlechip controller；
The singlechip controller is additionally operable to acquire the current value that the current sensor detects, and according to the current value,
Determine whether the loudspeaker work；When the loudspeaker work, controls the counting module and counted.
10. circuit according to claim 1, which is characterized in that the circuit further includes：
Parameter memory module, the parameter memory module are connect with the controller；
The singlechip controller is used to obtain the state parameter of the loudspeaker with the fixed cycle, and the state parameter is stored
To the parameter memory module；
The state parameter includes at least one in the temperature of the voltage of the loudspeaker, the electric current of the loudspeaker and the loudspeaker
Kind.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831091.9U CN207644315U (en) | 2017-12-25 | 2017-12-25 | A kind of horn circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721831091.9U CN207644315U (en) | 2017-12-25 | 2017-12-25 | A kind of horn circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207644315U true CN207644315U (en) | 2018-07-24 |
Family
ID=62878963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721831091.9U Active CN207644315U (en) | 2017-12-25 | 2017-12-25 | A kind of horn circuit |
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| Country | Link |
|---|---|
| CN (1) | CN207644315U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963247A (en) * | 2017-12-25 | 2019-07-02 | 长城汽车股份有限公司 | Horn assembly detection circuit and horn assembly detection method |
| CN110676119A (en) * | 2019-10-14 | 2020-01-10 | 珠海格力电器股份有限公司 | Single-live-wire switch and controller power supply method of single-live-wire switch |
-
2017
- 2017-12-25 CN CN201721831091.9U patent/CN207644315U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109963247A (en) * | 2017-12-25 | 2019-07-02 | 长城汽车股份有限公司 | Horn assembly detection circuit and horn assembly detection method |
| CN110676119A (en) * | 2019-10-14 | 2020-01-10 | 珠海格力电器股份有限公司 | Single-live-wire switch and controller power supply method of single-live-wire switch |
| CN110676119B (en) * | 2019-10-14 | 2020-10-02 | 珠海格力电器股份有限公司 | Single-live-wire switch and controller power supply method of single-live-wire switch |
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