CN1147408C - Alarming device of braker - Google Patents
Alarming device of brakerInfo
- Publication number
- CN1147408C CN1147408C CNB971149585A CN97114958A CN1147408C CN 1147408 C CN1147408 C CN 1147408C CN B971149585 A CNB971149585 A CN B971149585A CN 97114958 A CN97114958 A CN 97114958A CN 1147408 C CN1147408 C CN 1147408C
- Authority
- CN
- China
- Prior art keywords
- alarm
- temperature
- output signal
- condition
- brake
- 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.)
- Expired - Fee Related
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- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The present invention relates to an alarming device for a brake. When failure occurs to the brake and the brake is in a heating state, the alarming device sends out alarm before the failure becomes serious; when the failure does not occur, the alarming device does not sent out alarm and automatically relieves the alarm sent out. In the alarming device, a temperature sensor is arranged on a wheel and carries out calculation to a temperature difference value; when according with a three-dimensional alarming condition simultaneously set according to the temperature difference value, the output signals of a vehicle speed sensor and duration time for abnormal temperature, the alarming device sends out the alarm and automatically relieves the alarming condition. The alarming device for a brake has the advantage of low cost, and a driver does not need to carry out operation and does not need to be aware of the alarming of the brake under the general driving condition.
Description
The present invention is used for self-propelled vehicle and other vehicle braked device.The present invention relates to the improvement of drg safety device, especially relate to and when brake component or wheel temperature are in the condition of high temperature, giving the alarm to remind the improvement of the device that chaufeur notes.
In recent years, in order further to improve the safety of drg,, generally install the alarmer for braker that can give the alarm in the continuous heat-producing occasion of brake shoe brake cheek.Most alarmer for braker are provided with following circuit, and this circuit detects as electric signal by the temperature of temperature sensor with brake solution, brake shoe brake cheek, back plate and other brake component, gives the alarm when this detected value rises to above certain threshold value.In addition, in order correctly these temperature to be detected, people have done various effort (referring to the clear 62-180125 of publication number and other).Above-mentioned alarmer for braker function admirable, in the occasion that the fault that drg do not discharge takes place because of maloperation and other reason, this device can avoid causing from now on the such abnormal condition of situation such as packing to become serious.
Therefore, people wish that above-mentioned alarmer for braker can correctly give the alarm according to all driving conditions of self-propelled vehicle.That is, people wish no matter be the occasion of driving under hot environment, still are the occasion of driving at cold district, and alarm device can both equally move.
If the alarm critical temperature is set lowlyer, then when travelling continuously under the high temperature environment such as asphalt roads in full summer, in fact at drg not under the situation of et out of order, thereby because the wheel ambient temperature rises can give the alarm.If et out of order and giving the alarm has not then lost the reliability of alarm.If do not occurring so-called unusually owing to sending place that failure warning accepts to overhaul, then when taking place to give the alarm unusually, chaufeur may be ignored above-mentioned alarm.In addition, if the alarm critical temperature is set higherly, though the insignificant alarm when not having high temperature substantially but can not be carried out early warning to the error state that takes place at once when cold district begins to travel.
In fact, the fault that the rare obstruction of the self-propelled vehicle of being sold on market is in recent years travelled particularly seldom occurs in situation such as drg et out of order under the motoring condition.For most of vehicles, in the whole length of life of vehicle, all brake troubless that gives the alarm if necessary once can not take place yet.In other words, alarmer for braker is at infrequent unusual, but this device must be in that do not take place when unusual not can be because of maloperation gives the alarm, and only can positively go out activating alarm very soon when generation is unusual.
The present inventor has carried out various tests to alarmer for braker under above-mentioned state.Consequently, in any case find to adopt the also very difficult wide temperature range or the usage condition that will can be used for vehicle of method that when certain threshold value of surpassing the temperature anomaly setting, gives the alarm to cover without exception.That is to say, know and consider that safety is set in lower temperature with above-mentioned alarm temperature threshold value, in fact, the situation of abnormality alarm can not occur sending unusually although under too harsh usage condition, do not take place.
In addition, if, introduce the higher-level device of setting surrounding environment or usage condition etc. more particularly, and concerning the device that the fault that is used for few generation gives the alarm, do not wish to increase its burden economically in order to prevent above-mentioned situation.In addition, must avoid owing to alarmer for braker is that chaufeur is provided with too much operation.
In addition, the inventor learns that according to the result of above-mentioned test the time that abnormal temperature continues is the key factor of alarm.In addition, after in case alarm is sent, consider and analyze following various factors promptly refer to it is that chaufeur should send the back continuously in alarm and overhaul this device when sending the condition Lock-out of this alarm, perhaps should when the condition that gives the alarm disappears, sound all clear.Consequently, can find, be necessary that independent setting needn't be consistent and can be in the condition of not carrying out sounding all clear under the situation of alert action with the condition of output alarm signal in order to improve the reliability of alarm.
The present invention be directed to above-mentioned situation and propose, the object of the present invention is to provide the higher alarm device of a kind of reliability.That is, the object of the invention is to provide a kind of alarmer for braker, and this installs when et out of order, becomes in this fault can positively give the alarm before serious, and does not give the alarm when et out of order not; The alarmer for braker of a kind of practicality, economy is provided; A kind of alarmer for braker that at all need not driver's operation is provided; A kind of device that chaufeur is recognized the drg alarm that at all need not in the general operation course of action is provided; Automatically terminate just in case the condition of the operation that gives the alarm with setting.
The invention is characterized in that early detection goes out drg unusual situation takes place, the damage that drg is subjected to prevents trouble before it happens.
Therefore, alarmer for braker of the present invention comprises: temperature sensor is used for the temperature of brake component is detected; Arithmetical circuit is used to receive the said temperature signal of sensor and abnormal temperature is discerned; Alarm Display is used for according to the alarm output signal of above-mentioned arithmetical circuit alarm being shown to operator's seat.It is characterized in that: the said temperature sensor is arranged on a plurality of wheels that are provided with drg; Above-mentioned arithmetical circuit comprise to the temperature gap of above-mentioned a plurality of wheels carry out computing arithmetic element, receive the receiving element of the output signal of vehicle speed sensor; Above-mentioned arithmetical circuit is provided with following alarm issue unit, this unit output signal that gives the alarm when meeting simultaneously the three-dimensional condition of setting according to the output signal and the abnormal temperature time length of said temperature difference, above-mentioned speed sensor.
Best above-mentioned three-dimensional condition is provided with a plurality of, the above-mentioned alarm issue unit output signal that gives the alarm when meeting any one that is provided with in a plurality of conditions.Above-mentioned arithmetical circuit is provided with the condition that is different from the above-mentioned output signal that gives the alarm and is need not to automatically terminate under the situation of driver's operation just in case the alarm output signal that sends.Said apparatus comprises the following unit that gives the alarm, and this unit in the said temperature sensor surpasses set point of temperature and when being in the abnormal high temperature state, even do not meet above-mentioned three-dimensional condition, still can give the alarm.
The temperature sensor that is arranged at respectively on a plurality of wheels that are provided with drg detects the temperature of each brake component, and arithmetical circuit receives the said temperature signal of sensor, whether each brake component is in abnormal temperature judges.If there is the brake component that is in abnormal temperature in indication, the Alarm Display that is arranged at the operator's seat place is given the alarm signal to show alarm.
Because temperature sensor is arranged on all wheels that are provided with drg, arithmetical circuit can carry out computing to the temperature gap of a plurality of wheels like this, and inbound pacing signal of sensor, judge whether meeting following condition, this condition refers to the three-dimensional condition that the while is set according to the output signal and the abnormal temperature time length of said temperature difference, speed sensor, when meeting this condition, send alarm signal to Alarm Display to show alarm.
If above-mentioned three-dimensional condition respectively according on express highway travels the time and when on urban highway, travelling such mode the road that travels is set, then can judge soundly according to different roads, can send the higher alarm of reliability like this.
Set and the different alert consitions of condition that sends above-mentioned alarm output signal.That is, can be under the inactive situation of chaufeur automatically remove just in case the alarm output signal that sends, do not require that chaufeur recognizes the releasing of the alarm of sending and sending of alarm at every turn.
In addition, in the temperature sensor any one surpassed set point of temperature and be under the occasion of state as the condition of giving the alarm of abnormal high temperature, even do not meet above-mentioned three-dimensional condition, output signal still can give the alarm, thereby no matter what travel is, all can detect unusually to give the alarm.
In a manner described since can be positively to the detecting unusually of drg, the fault that can avoid in early days like this being taken place becomes serious, avoids giving the alarm in the time of also can making not et out of order in addition.In addition, when said apparatus do the action that return to normal condition, can continuously not give the alarm after becoming alert consitions a period of time.
Fig. 1 is the structural representation of the main portion of the embodiment of the invention;
Fig. 2 is the scheme drawing of an example of the temperature sensor that the embodiment of the invention adopted;
Fig. 3 is in the part sectional view of installing condition for the temperature sensor in the embodiment of the invention;
Fig. 4 is in the part sectional view of installing condition for another temperature sensor in the embodiment of the invention;
Fig. 5 is the diagram of circuit of the fundamental operation process of the expression embodiment of the invention;
Fig. 6 is the diagram of circuit of the course of action of expression first embodiment of the invention;
Fig. 7 is the diagram of circuit of the course of action of expression second embodiment of the invention;
Fig. 8 is the diagram of circuit of the course of action of expression third embodiment of the invention;
Keystone configuration and fundamental operation to the embodiment of the invention is described below.
Fig. 1 is the constructional drawing of the main portion of the embodiment of the invention.
The embodiment of the invention comprises: the temperature sensor 1 that detects the brake component temperature; Receive the output signal of this temperature sensor 1 and the arithmetical circuit 2 that abnormal temperature is discerned; The alarm output signal that provides according to this arithmetical circuit 2 is shown to alarm the Alarm Display 3 of operator's seat.The invention is characterized in: temperature sensor 1 is arranged on all wheels that are provided with drg; Arithmetical circuit 2 comprises: the arithmetic element of the temperature gap of each wheel being carried out computing, the receiving element of the output signal of inbound pacing sensor 4, give the alarm when meeting simultaneously the three-dimensional condition of setting according to the time length of the output signal of said temperature difference, above-mentioned speed sensor 4 and the abnormal temperature alarm issue unit of output signal also is provided with different with the condition that transmits the alarm output signal in addition in arithmetical circuit 2 and automatically terminates under the situation of not operating just in case the condition of the alarm output signal that sends.
An example of the temperature sensor that the first embodiment of the invention of representing Fig. 2 adopts, temperature sensor 1 is fixed in covering of brake unit, as shown in Figure 3.Fig. 4 represents the installing condition as the thermistor temperature sensor of another example of temperature sensor.In addition, Alarm Display 3 comprises: represent by light on and off whether unusual warning light 5 takes place; Represent by sound whether unusual alarm buzzer 6 takes place; Be used for cancelling the cancellation switch 7 of the alarm of being sent by warning light 5 and alarm buzzer 6.
Fundamental operation to the embodiment of the invention describes below.Fig. 5 is the diagram of circuit of the fundamental operation process of the expression embodiment of the invention.
Arithmetical circuit 2 receives the row operation of going forward side by side of output signal that each temperature sensor 1 and car speed sensor 4 send, thereby abnormal temperature is discerned.Afterwards, judge whether be in the state of giving the alarm at present,, judge then whether operation result satisfies alert consitions if be not in the state of giving the alarm.If satisfy alert consitions, then continue the alarm that keeps warning light 5 and alarm buzzer 6 to send.Above-mentioned the judgement of whether satisfying alert consitions is judged according to following situation, this situation refers to whether to meet the three-dimensional condition that the time length of temperature, the speed of a motor vehicle and the abnormal temperature discerned according to arithmetical circuit 2 is set, the perhaps three-dimensional condition of setting according to the time length of temperature gap, the speed of a motor vehicle and the abnormal temperature of each wheel of 2 computings of arithmetical circuit, perhaps any one in the two-dimensional condition set of the time length of temperature that is identified according to arithmetical circuit 2 and abnormal temperature.
When being at present when giving the alarm state, judge then whether the operation result of arithmetical circuit 2 meets the alarm stop condition, if meet the alarm stop condition, then stop the alarm of sending.If do not meet the alarm stop condition, then continue to give the alarm.
Send each condition in the condition at the alarm of a plurality of settings below, alarm is sent stop action with alarm and specifically describe.
First embodiment of the invention is set alert consitions according to temperature, the speed of a motor vehicle and abnormal temperature time length, and Fig. 6 is the diagram of circuit of the course of action of expression first embodiment of the invention.
Arithmetical circuit 2 receives the row operation of going forward side by side of output signal that temperature sensors 1 and car speed sensor 4 provide, and the temperature of each wheel is discerned.Afterwards, judge whether to be in alarm state at present,, judge that then the speed of a motor vehicle that calculated is whether more than 75km/h if be not in alarm state.If the speed of a motor vehicle more than 75km/h, then judge the front-wheel temperature whether more than 125 ℃ and the trailing wheel temperature whether more than 110 ℃.If front-wheel or trailing wheel temperature surpass 125 ℃ or 110 ℃, judge then whether time length surpasses 1 minute, if surpass 1 minute, then continue to keep the state that gives the alarm owing to being in error state this moment.
If the speed of a motor vehicle surpasses 75km/h, confirm then whether time meter is in starting state, if time meter is in starting state, judge that then the speed of a motor vehicle is whether below 65km/h.If the speed of a motor vehicle below 65km/h owing to be not in alarm state this moment, thus time meter is resetted and initial conditions is returned in control, if, judge that then whether front-wheel or trailing wheel temperature are above 125 ℃ or 110 above the above-mentioned speed of a motor vehicle.Surpass 1 minute if exceed the state of said temperature, then continue to give the alarm owing to being in error state this moment.
In addition, when being in when giving the alarm state, whether the temperature of judging front-wheel below 115 ℃, and whether the temperature of trailing wheel below 100 ℃, if below said temperature, then owing to needn't carry out alarm, thereby stop to give the alarm.If surpass said temperature, then continue as before to give the alarm owing to be in error state.
First embodiment of the invention is applicable at running on expressway.
Second embodiment of the invention is that temperature gap, the speed of a motor vehicle and the abnormal temperature time length according to each wheel set alert consitions, and Fig. 7 is the diagram of circuit of the course of action of expression second embodiment of the invention.
Arithmetical circuit 2 receives the output signal that is sent by temperature sensor 1 and car speed sensor 4, and the left and right sides temperature gap of front-wheel or trailing wheel is carried out computing.Afterwards, judge whether to be in the state of giving the alarm at present,, judge that then the speed of a motor vehicle that calculated is whether more than 45km/h if be not in alarm state.If the speed of a motor vehicle more than 45km/h, is then judged about front-wheel or trailing wheel left and right sides temperature gap whether more than 50 ℃.If temperature gap, is then judged time length more than 50 ℃ and whether surpassed 1 minute,, then continue to give the alarm owing to being in error state this moment if surpass 1 minute.
If the speed of a motor vehicle surpasses 45km/h, confirm then whether time meter is in starting state, if time meter is in starting state, judge that then the speed of a motor vehicle is whether below 35km/h.If the speed of a motor vehicle is below 35km/h, then owing to need not to give the alarm, so time meter is resetted and virgin state is returned in control.If surpass the above-mentioned speed of a motor vehicle, whether the left and right sides temperature gap of then judging front-wheel or trailing wheel is respectively above 50 ℃.Surpass 1 minute if surpass the state of this temperature gap, then continue to give the alarm owing to being in error state.
In addition, if be in the state of giving the alarm, whether the temperature gap of then judging front-wheel and trailing wheel is below 45 ℃, if, then stop to give the alarm owing to giving the alarm below the temperature gap at this.If below the temperature gap, then do not continue to give the alarm owing to being in error state at this.
Second embodiment of the invention is applicable on the Ordinary road in city and travels.
Third embodiment of the invention is to set alert consitions according to the temperature of each wheel, and Fig. 8 is the diagram of circuit of the course of action of expression third embodiment of the invention.
The output signal that arithmetical circuit 2 receives temperature sensors 1 row operation of going forward side by side is discerned the abnormal temperature of each wheel.Afterwards, judge whether be in alarm state at present,, judge that then whether the trailing wheel temperature is more than 140 ℃ if be not in alarm state.If the trailing wheel temperature does not surpass 140 ℃, judge that then whether the front-wheel temperature is more than 135 ℃.If the front-wheel temperature surpasses 135 ℃, then owing to not being in error state, so virgin state is returned in processing.Surpass under 135 ℃ the occasion of state continuance more than 1 minute if surpass 140 ℃ or front-wheel temperature, continue to give the alarm owing to being in error state in the trailing wheel temperature.
In addition, if be in the state of giving the alarm at present, then judge the trailing wheel temperature whether below 130 ℃ and the front-wheel temperature whether below 125 ℃.Surpass 130 ℃ or front-wheel temperature in the trailing wheel temperature and surpass under 125 ℃ 1 minute the occasion of state continuance, continue to give the alarm owing to being in error state.If the trailing wheel temperature below 130 ℃ and the front-wheel temperature below 125 ℃, then stop to give the alarm owing to not being in error state.
Because third embodiment of the invention is defined as temperature with alert consitions, so all suitable in the Ordinary road in express highway and the city any one.
Adopt the present invention in a manner described, the expense of actual needs is not high, when the drg et out of order, can positively give the alarm before this fault becomes seriously, and can prevent to give the alarm when trouble free, thereby improve the reliability of alarm.In addition, owing to automatically be set under the situation that chaufeur do not operate just in case the condition of all clear that sends, so chaufeur need not all to recognize sending and removing of drg alarm at every turn.
Claims (4)
1. alarmer for braker, comprising: temperature sensor is used for the temperature of brake component is detected; Arithmetical circuit is used to receive the output signal of described temperature sensor and abnormal temperature is discerned; Alarm Display is used for according to the alarm output signal of described arithmetical circuit alarm being shown to operator's seat; It is characterized in that:
Described temperature sensor is arranged on a plurality of wheels that are provided with drg;
Described arithmetical circuit comprises: the temperature gap of described a plurality of wheels is carried out the arithmetic element of computing and is used to receive the receiving element of the output signal of car speed sensor; With
Described arithmetical circuit is provided with the alarm issue unit that sends described alarm output signal when meeting simultaneously the three-dimensional condition of setting according to the output signal and the described abnormal temperature time length of described temperature gap, described speed sensor.
2. alarmer for braker according to claim 1 is characterized in that described three-dimensional condition is provided with a plurality of, the described alarm issue unit output signal that gives the alarm when meeting any one that is provided with in a plurality of conditions.
3. alarmer for braker according to claim 1 and 2, it is characterized in that, described arithmetical circuit be provided with the condition that is different from the described output signal that gives the alarm and can be under the situation of not operating with just in case the condition that the alarm output signal that send automatically terminates.
4. alarmer for braker according to claim 1, it is characterized in that, this device comprises the following output signal unit that gives the alarm, this unit in described temperature sensor one surpasses set point of temperature and when being in the abnormal high temperature state, even do not meet the above-mentioned three-dimensional condition output signal that still can give the alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB971149585A CN1147408C (en) | 1997-05-16 | 1997-05-16 | Alarming device of braker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB971149585A CN1147408C (en) | 1997-05-16 | 1997-05-16 | Alarming device of braker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1199683A CN1199683A (en) | 1998-11-25 |
| CN1147408C true CN1147408C (en) | 2004-04-28 |
Family
ID=5173049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB971149585A Expired - Fee Related CN1147408C (en) | 1997-05-16 | 1997-05-16 | Alarming device of braker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1147408C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823482A (en) * | 2010-05-28 | 2010-09-08 | 冯兵 | Diagnosis system for vehicle braking system and diagnosis method |
| EP4112402A1 (en) * | 2021-06-29 | 2023-01-04 | Volvo Truck Corporation | A method for monitoring a temperature of a brake system of a vehicle |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419476B (en) * | 2007-10-26 | 2011-05-04 | 上海华虹Nec电子有限公司 | Inspecting and monitoring system for liquid temperature in liquid groove of wet method groove type machine |
| CN102735365B (en) * | 2012-06-25 | 2015-11-18 | 美的集团股份有限公司 | Ambient temperature detection device and fault judgment method thereof |
| CN104385977A (en) * | 2014-11-12 | 2015-03-04 | 浙江吉利汽车研究院有限公司 | Monitoring method and monitoring system for airbag control unit |
| DE102015105862A1 (en) * | 2015-04-17 | 2016-10-20 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Method for increasing the operational reliability of thermally loaded functional parts of a disc brake |
| CN107539215B (en) * | 2017-08-24 | 2021-07-13 | 易绍福 | Wheel temperature monitoring system |
-
1997
- 1997-05-16 CN CNB971149585A patent/CN1147408C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823482A (en) * | 2010-05-28 | 2010-09-08 | 冯兵 | Diagnosis system for vehicle braking system and diagnosis method |
| EP4112402A1 (en) * | 2021-06-29 | 2023-01-04 | Volvo Truck Corporation | A method for monitoring a temperature of a brake system of a vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1199683A (en) | 1998-11-25 |
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