CN1093048A - Monitoring and discriminating system for shaft temperature - Google Patents
Monitoring and discriminating system for shaft temperature Download PDFInfo
- Publication number
- CN1093048A CN1093048A CN 94102548 CN94102548A CN1093048A CN 1093048 A CN1093048 A CN 1093048A CN 94102548 CN94102548 CN 94102548 CN 94102548 A CN94102548 A CN 94102548A CN 1093048 A CN1093048 A CN 1093048A
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- change
- monitoring
- over swith
- shaft temperature
- sensor
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Abstract
The present invention is a kind of passenger train monitoring and discriminating system for shaft temperature, also is applicable to the fire alarm identification system.At the existing problem of existing monitoring system, adopt the identifying shaft temperature sensor of parallel diode, and be used to change the change-over swith of sensor electrical flow path direction.At ordinary times, change-over swith is stabilized in " monitoring " position, provides monitoring accurately to the passenger vehicle axle temperature; When reporting to the police appears in system, replace to switch in " discriminating " position.Native system not only has monitoring function accurately to axle temperature, and the alerting signal of system is had very failure-free resolution capability, can avoid the loss that causes because of wrong report.
Description
The present invention relates to a kind of passenger train monitoring and discriminating system for shaft temperature.Native system also is applicable to the fire alarm identification system.
Operating railway vehicle is because bad or other bearing fault of bearing lubrication all can cause bearing running hot.As untimely discovery, promptly there is the combustion axle dangerous, when serious, may cause and cut overturning of axle and vehicle.At present, many countries are all developing and are promoting polytype axle temperature monitoring device.Because fusible metal formula shaft temperature monitoring system has advantages such as simple and reliable, that monitor temperature is accurate, therefore, some countries of the former Soviet Union, Germany and Eastern Europe all adopt fusible metal formula hot box monitor and alarm system (see figure 1).
Among Fig. 1, TK is the shaft temperature sensor that is loaded on axletree axle box top.When axle temperature just often, sensor TK is in conducting state, by series connected sensor, the relay J adhesive.In case hot box appears, when the axle box temperature surpasses 92 ℃～105 ℃, and fusible metal fusing in the sensor, relay J discharges, and its two groups of normally closed contact J-1 and J-2 connect, and electric bell DL and red alarm indicator lamp D send the sound and light alarm signal.Wherein, A1 is a test button.Be not difficult to find out that the design logic of fusible metal formula shaft temperature monitoring system is a breaking alarming, therefore, opening circuit appears in whole monitoring circuit any point, wrong report all can occur.The direct serious consequence of wrong report is to cause train operation accident, and often wrong report then can reduce the confidence level of monitoring device, so that cause even more serious consequence.
The objective of the invention is: at the existing wrong report problem of above-mentioned monitoring system, provide a kind of monitoring and discriminating system for shaft temperature, it not only has monitoring function accurately, and the alerting signal that system sends is had very failure-free resolution capability.
The object of the present invention is achieved like this: the monitoring and discriminating system for shaft temperature (see figure 2), comprise: by fusing point is 92 ℃～105 ℃ shaft temperature sensor TK that fusible metal constituted, electromagnetic relay J, two groups of normally closed contact J-1 of relay, J-2 links up warning electric bell DL and warning indicator lamp D respectively, compare with background technology, it is characterized in that: in sensor, the fusible metal two ends are directly in parallel small-sized, heat-resisting, high-voltage diode (identifying shaft temperature sensor), replace only having the shaft temperature sensor of fusible metal, adopt monostable change-over swith K to change the sensor loop sense of current.At ordinary times, change-over swith is stabilized in " monitoring " position, and among the identifying sensor TK, the negative pole of diode Z is through the A of change-over swith K
1-A
0, being connected to positive source, the positive pole of diode Z is through the B of change-over swith
1-B
0Connect with the coil of relay J, be connected to power cathode, diode Z all is in reverse blocking state.Relay J adhesive by the fusible metal in each sensor, each sensor is in monitoring state all the time to the axletree temperature.System to the discriminating mechanism of alerting signal is: in case system report to the police, replaceable to K switch in " discriminating " position, at this moment two states will appear:
1. stop to report to the police, illustrate that monitoring circuit is unimpeded, hot box has appearred in passenger vehicle! Its principle is: hot box, and fusible metal fusing, relay J discharges, and system sends warning.Behind " discriminating " position, the electric current of sensor loop has changed direction to K switch in displacement, and diode Z changes into the forward conduction state.The A of relay J by connecting
0-A
2-B
1, the diode in hot box (fusible metal fusing) sensor, change-over swith A
1-B
2-B
0And adhesive again, making reports to the police stops.
2. it is more than to report to the police, and explanation is because the wrong report that sensor external cabling, connector or other parts of monitoring circuit open circuit and cause.
The present invention compares the beneficial effect that is had with background technology: the alerting signal that system is sent has very failure-free resolution capability, has avoided the loss that causes because of wrong report.
Fig. 1 fusible metal formula shaft temperature monitoring system schematic diagram
Fig. 2 monitoring and discriminating system for shaft temperature schematic diagram
The actual loading track figure of monitoring and discriminating system for shaft temperature sees Fig. 2, wherein represents the core devices of inventive features to be: the identifying shaft temperature sensor TK of, high-voltage diode Z directly in parallel small-sized, heat-resisting at the fusible metal two ends, and in order to change the change-over swith K of sensor loop direction of current.The relay harmony in the background technology, light warning part have also been kept simultaneously.The effect of other elements is summarized as follows among the figure: the JJ that long and two-short dash line surrounds partly is the discriminator part in the device; A1 is test whether report to the police actv. test button, D
1For anti-reverse diode, A are amperemeter/ammtr, D
2Diode, D for the damage of protection amperemeter/ammtr overcurrent
4Be flywheel diode, capacitor C
1For absorbing electric capacity, resistance R
1With light-emitting diode D3 be that power supply shows.
Change-over swith K can adopt monostable mechanical contact-type, electronic type or other patterns.
Claims (2)
1, monitoring and discriminating system for shaft temperature, it comprises: fusible metal formula shaft temperature sensor, electromagnetic relay, the coil of electromagnetic relay is connected with sensor, be connected to direct supply, two groups of normally closed contacts of relay are linked up warning electric bell and warning indicator lamp respectively, it is characterized in that: it is directly in parallel small-sized to be used in the fusible metal two ends, heat-resisting, the identifying shaft temperature sensor TK of high-voltage diode Z, replace only having the shaft temperature sensor of fusible metal, change the sensor loop sense of current with change-over swith K, its circuit connects: at ordinary times, and when change-over swith K is stabilized in " monitoring " position, among the identifying sensor TK, the negative pole of diode Z is through the A of change-over swith K
1-A
0, being connected to positive source, the positive pole of diode Z is through the B of change-over swith
1-B
0Connect with the coil of relay J, be connected to power cathode; When change-over swith K placed " discriminating " position, the anode of the diode Z among the identifying sensor TK was through B
1-A
2-A
0Be connected to the positive pole of power supply, the negative pole of diode Z is through change-over swith A
1-B
2-B
0Connect with the coil of relay J, be connected to the negative pole of power supply.
2, monitoring and discriminating system for shaft temperature according to claim 1 is characterized in that: change-over swith K can adopt monostable mechanical contact-type, electronic type or other patterns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94102548A CN1045566C (en) | 1994-03-18 | 1994-03-18 | Monitoring and discriminating system for shaft temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94102548A CN1045566C (en) | 1994-03-18 | 1994-03-18 | Monitoring and discriminating system for shaft temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1093048A true CN1093048A (en) | 1994-10-05 |
| CN1045566C CN1045566C (en) | 1999-10-13 |
Family
ID=5030695
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94102548A Expired - Fee Related CN1045566C (en) | 1994-03-18 | 1994-03-18 | Monitoring and discriminating system for shaft temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1045566C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716652A (en) * | 2014-12-03 | 2016-06-29 | 中国飞机强度研究所 | Detector circuit |
| CN111383033A (en) * | 2020-03-05 | 2020-07-07 | 云南阵码科技有限公司 | Anti-counterfeiting tracing method and device for chemical fertilizer product |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1171387A1 (en) * | 1982-02-08 | 1985-08-07 | Криворожское Отделение Приднепровской Железной Дороги | Device for warning of roller box heating |
| DD211765A1 (en) * | 1982-11-18 | 1984-07-25 | Claus Gulba | Temperaturfuehler |
-
1994
- 1994-03-18 CN CN94102548A patent/CN1045566C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105716652A (en) * | 2014-12-03 | 2016-06-29 | 中国飞机强度研究所 | Detector circuit |
| CN105716652B (en) * | 2014-12-03 | 2018-01-16 | 中国飞机强度研究所 | A kind of detector circuit |
| CN111383033A (en) * | 2020-03-05 | 2020-07-07 | 云南阵码科技有限公司 | Anti-counterfeiting tracing method and device for chemical fertilizer product |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1045566C (en) | 1999-10-13 |
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