CN202159352U - Temperature measurement system used for train part - Google Patents
Temperature measurement system used for train part Download PDFInfo
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- CN202159352U CN202159352U CN2011202403206U CN201120240320U CN202159352U CN 202159352 U CN202159352 U CN 202159352U CN 2011202403206 U CN2011202403206 U CN 2011202403206U CN 201120240320 U CN201120240320 U CN 201120240320U CN 202159352 U CN202159352 U CN 202159352U
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Abstract
The utility model relates to a temperature measurement system used for a train part, which comprises a temperature detection device arranged on an axle of the train and used for the train part, a radio frequency identification devices (RFID) reader installed beside a rail and receiving data sent out by the temperature detection device used for the train part and a server communicated with the RFID reader through a communication network. The temperature detection device comprises a passive RFID electronic label chip integrated with a temperature sensor. Information data of a target detection material are stored in a storage device of the electronic label chip. The RFID reader comprises a temperature sensor for detecting temperature of the environment. The server determines a temperature alarm threshold value of the target detection material and sends out alarm for abnormal temperature exceeding the temperature alarm threshold value. The temperature detection device used for the train part, an integrated circuit and the system have the advantages of being low in cost and high in reliability.
Description
Technical field
The utility model relates to the detection of train parts, more particularly, relates to a kind of temperature measurement system that is used for the train parts.
Background technology
Rolling stock is when moving, owing to bearing fault, bearing abnormal high temperature can cause the vehicle hot box even the overheating of axle bearing accident takes place fast.THDS is to find the rolling stock hot box, prevents the overheating of axle bearing accident, guarantees the visual plant of safety of railway traffic.But China's THDS causes the poor reliability of system often because of reasons such as weather, equipment self defective break down at present, and the hot box rate of false alarm is high, the hot box encashment ratio is low, and operation and maintenance cost are higher.
RF identification (RFID) is a kind of non-contacting automatic identification technology, and its principle is to utilize radiowave to transmit identifying information, has been widely used in various fields such as industrial automation, business automation, communications and transportation control and management.In recent years along with the fast development of RFID technology, the mode that wireless transmission and temperature sensor technology is combined through REID realizes that wireless temperature measurement realizes.But the RFID electronic tag of existing band temperature sensor is active mostly or is half active; Temperature sensor and electronic label chip branch are arranged; Also need MCU processor chips to carry out interface and data-switching between them; Also need attach battery and could work for its power supply, so the circuit more complicated of system, cause cost higher.In addition, because common battery can not bear the high temperature of rolling stock bearing, resistant to elevated temperatures battery then price is very expensive; And owing to be used for the working environment very severe of the electronic tag of rolling stock bearing temperature detection; If additional battery on this electronic tag; The reliability of system is very poor, and therefore the RFID electronic label technology of existing band temperature sensor still can not satisfy the demand of rolling stock bearing temperature detection.
The utility model content
The technical matters that the utility model will solve is, the defective to the above-mentioned poor reliability of prior art provides a kind of reliability the high temperature measurement system that is used for the train parts.
The utility model solves the technical scheme that its technical matters adopted:
Construct a kind of system for detecting temperature that is used for the train parts; It is characterized in that said system comprises the temperature-detecting device that is used for the train parts that is installed on the train axle, be installed in that rail is other to be received the said temperature-detecting device that is used for the train parts and send the RFID reader of data and the server that communicates through communication network and said RFID reader; Wherein, said temperature-detecting device and RFID reader communicate with wireless non-contacting EM coupling mode, and said communication network comprises cordless communication network and/or wireline communication network; Said temperature-detecting device comprises the passive RFID electronic label chip that is integrated with temperature sensor and the electronic label antenna that is connected with said electronic label chip, and it is power module, the modulation circuit that is used to launch, receive and store data, demodulator circuit, storer, control circuit, electrify restoration circuit, the pierce circuit that said RFID label chip is supplied power that said passive RFID electronic label chip comprises temperature sensor, esd protection circuit, rectification circuit, obtain said electronic label antenna from peripheral electromagnetic field electric energy conversion becomes stable output voltage; Two input ends of said esd protection circuit link to each other with two electrodes of electronic label antenna respectively; Two input ends of said rectification circuit link to each other with two electrodes of said electronic label antenna respectively; The output terminal of said rectification circuit links to each other with the input end of power module; The output terminal of said power module is connected respectively to the power input of said demodulator circuit, electrify restoration circuit, pierce circuit, memory circuitry, control circuit, modulation circuit and said temperature sensor circuit; The signal input part of said demodulator circuit links to each other with first electrode of said electronic label antenna; The signal output part of said demodulator circuit is connected to said control circuit; Said electrify restoration circuit signal output part is connected to said control circuit; Said pierce circuit signal output part is connected to said control circuit, and said memory circuitry links to each other with control circuit through bus; The signal input part of said modulator is connected with control circuit, and the signal output part of said modulator is connected with second electrode of said electronic label antenna; Store ID number of bearing, installation site information, bearing designation, production firm, the production time of bearing in the storer of said passive RFID electronic label chip and use and overhaul the information recorded data; Said RFID reader also comprises second temperature sensor that is used for the testing environment temperature.
In the described temperature measurement system that is used for the train parts of the utility model; In said temperature-detecting device; Said power module comprises first output terminal and second output terminal; Said first output terminal is the said power module first voltage regulation unit output terminal, and first output terminal is to remove temperature sensor other circuit module power supply to locate in the described passive RFID electronic label chip; Said second output terminal is the said power module second voltage regulation unit output terminal, and said second output terminal is that said temperature sensor provides stable power more, for said temperature sensor is supplied power separately.
In the described temperature measurement system that is used for the train parts of the utility model, in said temperature-detecting device, can be connected with first decoupling and second decoupling respectively on the input and output side of said second voltage regulation unit.
In the described temperature measurement system that is used for the train parts of the utility model, said temperature sensor comprises the temperature sensing circuit module that obtains temperature information and converts the temperature information that detects to the AD converter module of binary format temperature data.
In the described temperature measurement system that is used for the train parts of the utility model; In said temperature-detecting device, the controlled switch that also be provided with the control circuit control that receives in the said RFID chip on the said second voltage regulation unit input end, when collecting temperature data not, breaks off.
In the described temperature measurement system that is used for the train parts of the utility model, said RFID reader comprises: first communication interface that antenna, radio receiving transmitting module, baseband signal processing module, detection are stated the residing environment temperature of RFID reader and communicated with its second temperature sensor as train residing environment temperature when stating the RFID reader, with server; Said antenna, radio receiving transmitting module, baseband signal processing module, first communication interface are linked in sequence successively, and said second temperature sensor links to each other with baseband signal processing module.
In the described temperature measurement system that is used for the train parts of the utility model, said server comprises: the second communication interface that communicates with said RFID reader, the information that is received carried out the data processing module of data processing.Wherein, said data processing module specifically comprise judge module that whether base modules of confirming temperature threshold, the temperature of judging said target detection thing exceed said temperature threshold reach when judged result be to send the alarm module of warning message when being; Data communication between second communication interface Control Server and the RFID reader gives said electronic label read/write or reception from the electronic label read/write data sent data transmission; Data processing module is handled the data that receive; Restore various types of data; According to ID number of the bearing relevant that receives, the installation site information of bearing with the target detection thing and with bearing relevant bearing designation, production firm, production time, use and overhaul and write down and ambient temperature data; Confirm the temperature alarming threshold value, and the abnormal temperature that exceeds the temperature alarming threshold value is provided warning message.
In the described temperature measurement system that is used for the train parts of the utility model; Environment temperature can also be obtained by described temperature-detecting device; Described temperature-detecting device is installed ON TRAINS the position that can read this temperature-detecting device away from bearing heating and RFID reader; This position does not have other thermal source, and the temperature at this position can be represented the residing environment temperature of train.During train driving; When being installed in the electromagnetism place of this position temperature-detecting device process RFID reader; This temperature-detecting device can the fast detecting environment temperature and be transferred to the RFID reader on ground to ambient temperature data, and be transferred to server to the ambient temperature data that obtains by the RFID reader.
Implement the temperature measurement system that is used for the train parts of the utility model; Has following beneficial effect: because temperature sensor is integrated on the RFID chip; And the power supply by the RFID that integrates is chip self power supply; Cancelled external supplying cell, thereby made that its cost is lower, temperature detection and reliability of data transmission be higher, can adapt to extremely bad working environment.In addition; The system for detecting temperature of the utility model can provide accurate dynamic temperature alarming threshold value according to the bearing and the environment temperature of different model; And can measure the temperature of bearing more exactly, therefore can report to the police to the bearing proposition of temperature anomaly exactly, thereby reduce the hot box rate of false alarm; Improved the reliability of system; Strengthened the safety guarantee of vehicle operating, reduced the time that the vehicle failover is overhauled and need be out of service simultaneously and reduced the cost of car inspection and repair, thereby more can be close to the users demand.
Description of drawings
Fig. 1 is the structural representation that the utility model is used for the temperature measurement system embodiment temperature measurement system of train parts;
Fig. 2 is the structural representation that is used for the temperature-detecting device of train parts among the said embodiment;
Fig. 3 is the structural representation of RFID reader in the temperature measurement system among the said embodiment;
Fig. 4 is the structural representation of server in the said embodiment temperature measurement system.
Embodiment
To combine accompanying drawing that the utility model embodiment is described further below.
As shown in Figure 1, be used for the temperature measurement system embodiment of train parts at the utility model, this system comprises temperature-detecting device 10, RFID reader 20, communication network 30, the server 40 that is used for the train parts.Wherein, the temperature-detecting device 10 that is used for the train parts comprises the RFID label chip 11 and electronic label antenna 12 that is integrated with temperature sensor, and wherein, RFID label chip 11 is electrically connected with electronic label antenna 12.Temperature-detecting device 10 communicates with wireless non-contacting EM coupling mode with RFID reader 20; Server 40 communicates through communication network 30 and said RFID reader 20, and particularly, communication network 30 comprises cordless communication network and/or wireline communication network.
In the present embodiment; The structured flowchart of the RFID label chip 11 of above-mentioned integrated temperature sensor is as shown in Figure 2, and RFID label chip 11 is provided with esd protection circuit 110, rectification circuit 111, power module 112, demodulator circuit 113, electrify restoration circuit 114, oscillator 115, storer 116, temperature sensor 117, control circuit 118, modulator 119.Further; Temperature sensor 117 specifically comprises: the temperature sensing circuit 1171 and the AD converter 1172 that connect successively; The output of AD converter 1172 is connected to above-mentioned control circuit 118, and selectively, temperature data can be stored in the assigned address of above-mentioned storer 116 through control circuit 118.Two input ends of esd protection circuit 110 link to each other with two electrodes of electronic label antenna 12 respectively; Two input ends of rectification circuit 111 link to each other with two electrodes of electronic label antenna 12 respectively, and the output terminal of rectification circuit 111 links to each other with the input end of power module 112; An output terminal of power module 112 is connected respectively to the power input of demodulator circuit 113, electrify restoration circuit 114, pierce circuit 115, memory circuitry 116, control circuit 118, modulation circuit 119; The signal input part of demodulator circuit 113 links to each other with first electrode of electronic label antenna 12, and the signal output part of demodulator circuit 113 is connected to controller 118; Electrify restoration circuit 114 signal output parts are connected to controller 118; Pierce circuit 115 signal output parts are connected to controller 118; Memory circuitry 116 links to each other with controller 118 through bus 120; The signal input part of modulator 119 is connected with control circuit 118, and the signal output part of modulator 119 is connected with second electrode of electronic label antenna 12.In the present embodiment; Above-mentioned power module 112 further comprises the first voltage-regulation unit 1121, controlled switch 1122 and second voltage regulation unit 1123; Wherein, An output terminal of the first voltage-regulation unit 1121 is connected as output terminal of power module 112 traditional function module with RFID labels such as above-mentioned demodulator circuit 113, electrify restoration circuits 114, and its another output terminal forms an independent output terminal through controlled switch 1122, second voltage regulation unit 1123, for said temperature sensor 117 provides stable power more; Wherein, Two switch terminals of above-mentioned controlled switch 1122 are connected to another output terminal of the above-mentioned first voltage-regulation unit 1121 and the input end of above-mentioned second voltage regulation unit 1123, and its control end is connected on the I/O port of above-mentioned control circuit 118, the conducting when the collecting temperature data of this controlled switch 1122; And when collecting temperature data not, break off, to save the consumption of power supply.Selectively; In the present embodiment; The input end of above-mentioned second voltage regulation unit 1123 and output terminal can be connected with first decoupling and the second decoupling (not shown) respectively, and this decoupling makes the data-transformation facility of above-mentioned RFID label chip 11 can not receive the influence of the work of temperature sensor 117 on the one hand, simultaneously; Also store certain energy, further alleviate RFID label chip 11 when data transmission to temperature sensor 117 Effect on Performance.The purpose of this set (comprising the controlled switch 1122 and second voltage regulation unit 1123) is exactly under the condition of the limited energy, reasonably to use the energy as far as possible, and then accomplishes the function of temperature detection and data transmission.
In the present embodiment; It adopts passive working method the above-mentioned temperature-detecting device that is used for the train parts; The antenna 12 of label obtains energy through EM coupling from electromagnetic field on every side; Behind the rectification circuit 111 and power module 112 rectifications and voltage stabilizing through label chip, producing stable power is the circuit supply of label chip self.So in the present embodiment, on certain meaning, RFID label integrated circuit (or chip) is identical (its difference only is whether to comprise the antenna part and the mounting portion thereof of label) with the above-mentioned temperature-detecting device that is used for the train parts.
In the present embodiment, the function of esd protection circuit 110 is protection chips, prevents the static discharge access to plant and disturbs or damage the chip in this device; The temperature-detecting device 10 that rectification circuit 111 will be used for the train parts converts direct current to from the alternating current that electromagnetic field (the RFID1 reader sends) obtains, and stores this direct current energy; Because being used for the electric energy of temperature-detecting device 10 acquisitions of train parts changes with the distance between above-mentioned electronic tag and the RFID reader; The direct current of rectification circuit 111 outputs is pressed with very big variation range; Therefore power module 112 needs the first voltage-regulation unit 1121 with voltage limit within the specific limits; Export the voltage of temperature-detecting device 10 work that stable confession is used for the train parts, this voltage be that other circuit module except that temperature sensor 117 is supplied power in the whole device as supply voltage (VDD); The power supply of temperature sensor 117 is then supplied power separately through controlled switch 1122, the second voltage-regulation unit 1123 by another road output of the above-mentioned first voltage-regulation unit 1121, and voltage stable power more is provided; The information that 20 emissions of 113 pairs of RFID readers of demodulator circuit come is carried out demodulation, obtains the order and the data of binary format; The supply voltage (VDD) of electrify restoration circuit 114 pick-up units; Reach the magnitude of voltage of electrify restoration circuit 114 settings when supply voltage (VDD) after; Circuit produces a reset enable signal; Control circuit 118 is resetted, thereby make this device be in stable initialization state, and activate other circuit module of this device; Oscillator 115 produces the clock signal (CLK) of RFID label chip 11 systems; The various data relevant of storer 116 storages with the target detection thing, wherein, the temperature data that is produced by temperature sensor 117 is stored in assigned address; The temperature of this device of temperature sensor 117 fast detecting (this device install train parts) in other words converts temperature information to the temperature data of binary format; Control circuit 118 is logic control centers of this RFID label chip 11; Various logic control and digital signal processing work by its finishing device; The data that this control circuit 118 will pass through after demodulator circuit 113 demodulation are decoded and decryption processing; The instruction and data that identification is received; Accomplish specific operation according to instruction, storage as with the data that receive deposit storer 116 in or from storer 116 reading of data, whether the work schedule and the above-mentioned controlled switch 1122 of control temperature sensor 117 are connected; Generation is used for data that the temperature-detecting device 10 of train parts need return and it is encrypted and encodes, and carries out anticollision control of many tag recognition etc.; Modulation circuit 119 adopts backscattering to modulate and realizes that the data of returning needs turn back to RFID reader 20 by electronic label antenna 12.The information that the said temperature-detecting device 10 that is used for the train parts returns is carried the information relevant with the target detection thing, and this relevant information comprises temperature information.
Particularly; The structured flowchart of electronic label read/write 20 is as shown in Figure 3, and said RFID reader 20 comprises: antenna 201, radio receiving transmitting module 202, baseband signal processing module 203, first communication interface 204, the temperature sensor 205 that communicate with server.Antenna 201, radio receiving transmitting module 202, baseband signal processing module 203, first communication interface 204 are linked in sequence successively, and temperature sensor 205 links to each other with baseband signal processing module 203.Antenna 201 emissions and reception radio magnetic wave; Radio receiving transmitting module 202 is modulated the instruction and data of the base band of RFID reader 20 and is become modulation signal after launched with form of electromagnetic wave by antenna 201, or the signal that antenna 201 receives is carried out becoming after the demodulation baseband signal of low frequency; Data processing such as emission of 203 pairs of baseband signal processing modules or the data that receive are encoded, decode, encrypted, deciphering, the processing of radio communication air interface protocol, logic control; Data communication between first communication interface, 204 control RFID readers 20 and the server 40 is uploaded to data that receive from said temperature-detecting device and ambient temperature data server 40 or receives the instruction and data that sends from server 40; The environment temperature of temperature sensor 205 detected electrons tag read-write equipments 20, and an ambient temperature data that produces is transferred to baseband signal processing module 203.When receiving data; Antenna 201 receives the information of being returned by electronic tag; Through obtaining baseband signal after radio receiving transmitting module 202 demodulation; After baseband signal processing module 203 decoding and deciphering, data after first communication interface 204 will decode and decipher and upload onto the server 40 by the ambient temperature data of the temperature sensor generation of electronic label read/write 20; When transmitted data signal; First communication interface 204 will be passed to baseband signal processing module 203 from the data that server 40 receives; Through encryption, behind the coding, wireless transceiver module 202 is modulated it, antenna 201 is launched the data of being modulated with form of electromagnetic wave then.
Particularly, the system architecture of server 40 is as shown in Figure 4, and said server 40 comprises: the second communication interface 401 that communicates with RFID reader 20, the information that is received carried out the data processing module 402 of data processing.Wherein, said data processing module 402 specifically comprise judge module 4022 that whether base modules 4021 of confirming temperature threshold, the temperature of judging said target detection thing exceed said temperature threshold reach when judged result be to send the alarm module 4023 of warning message when being.
Data communication between second communication interface 401 Control Servers 40 and the RFID reader 20 gives electronic label read/write 20 or reception from electronic label read/write 20 data sent data transmission.The data of 402 pairs of receptions of data processing module are handled; Restore various types of data; According to information and the environment temperature relevant that receive, confirm the temperature alarming threshold value, and the abnormal temperature that exceeds the temperature alarming threshold value is provided warning message with the target detection thing.
In order to understand the scheme of the utility model better, specifically describe the principle of work of present embodiment below:
In the utility model; Said target detection thing can be to detect article arbitrarily; The temperature-detecting device 10 that is used for the train parts snugly fits into the position that need carry out temperature detection on the target detection thing, perhaps can be because of high temperature the position that reduces of reliability, adopt passive working method; RFID reader 20 is arranged on and conveniently reads the position that this is used for the temperature-detecting device of train parts, carries out contactless transmission data with this temperature-detecting device that is used for the train parts.And server 40 communicates through communication network 30 and said RFID reader 20, and wherein, said communication network can be wireless, also can be wired, this is not limited here.
As preferred embodiment, in the present embodiment, said target detection thing is the bearing of rolling stock, and the temperature-detecting device 10 that is used for the train parts snugly fits on bearing seat or the axletree the position near bearing heating; Owing to snugly fit into the bearing heating part, so the temperature that this temperature sensor records can be similar to the temperature of regarding this bearing heating position as.RFID reader 20 is arranged on the ground near rail, carries out contactless transmission data and information with this temperature-detecting device 10 that is used for the train parts.
When the train process was provided with the rail of RFID reader 20, the transmitter module of this electronic label read/write 20 can send electromagnetic wave, and this electromagnetic frequency is 840MHz ~ 960MHz.The temperature-detecting device 10 that is used for the train parts obtains electric energy from the electromagnetic field of electronic label read/write 20 emissions and supplies power for self.Particularly, be coupled, utilize the antenna 12 of electronic tag to obtain electric energy, change alternating voltage into the voltage galvanic current through rectification circuit 111 with power module 112 again and press (VDD), for RFID label chip 11 self is supplied power through the electromagnetic field space.After RFID label chip 11 obtains electric energy; Circuit system in the label is started working; At first whether satisfy the required voltage of chip operation,, then send the electrification reset control signal and make system reset if satisfy by electrify restoration circuit 114 inspection supply voltages (VDD); And other circuit of activation chip internal, otherwise just be in waiting status; After label is activated; Oscillator 115 produces clock signal of system (CLK); The temperature of temperature sensing circuit 1171 its working environments of fast detecting of temperature sensor 117; Produce the temperature signal of representation temperature height information, AD converter 1172 converts the temperature signal that obtains the temperature data of binary format to, and is transferred to control circuit 118 to temperature data.Selectively, control circuit 118 stores this temperature data into the assigned address of storer 116.Control circuit 118 reads the information relevant with said bearing from storer 116; Wherein, Said relevant information comprises ID number of said bearing, the installation site information of bearing and bearing designation, production firm, production time relevant with bearing, uses and overhauls data messages such as record; Selectively, the relevant information that reads from storer comprises the temperature data of bearing (being electronic label chip); Particularly, said installation site information comprises the installation site identification code, also can comprise the three-dimensional information of installation site, and preferably, said identification code can be the ID of said installation site.Control circuit 118 is combined into frame data to the said relevant information and the temperature data that read from storer then; In this Frame; Above-mentioned temperature data and relevant information data are placed in the assigned address of this Frame, arrange in sequence, are convenient to follow-up data and take out processing.118 pairs of frame data of control circuit carry out data encryption, coding, modulate via modulator 119 then, and turn back to RFID reader 20 to data through electronic label antenna 12 with wireless mode.This modulation system has multiple, in the present embodiment, as preferably, adopts the backscattering modulation system to realize.
Because the maximum temperature that can bear of rolling stock bearing is relevant with the manufacturing material of bearing, also relevant with the working environment of bearing.In China south and northern; The temperature in four seasons spring, summer, autumn and winter differs greatly; Therefore in different seasonal and place, because environment temperature is different, the alarm threshold value of the bearing temperature of rolling stock has very big variation; Can not can not write fixing temperature alarming threshold value in the storer 116 of said temperature-detecting device 10 with a relatively-stationary numerical value as the temperature alarming threshold value.The temperature alarming threshold value of bearing need be associated with the residing environment temperature of model, production firm, train of bearing; Dynamically confirm the temperature alarming threshold value of bearing; Just can make system judge more accurately whether the bearing of vehicle ERST has taken place, improve the accuracy rate of abnormal alarm.In the present embodiment; The environment temperature of the temperature sensor 205 detected electrons tag read-write equipments 20 of RFID reader 20; And being transferred to baseband signal processing module 203 to an ambient temperature data that produces, this environment temperature can be thought the residing at that time environment temperature of train.After the antenna 201 of RFID reader 20 receives the information of being returned by the temperature-detecting device that is used for the train parts 10; 202 demodulation obtain baseband signal through radio receiving transmitting module; Then decode through baseband signal processing module 203 and decipher, the data after first communication interface 204 will decipher are transferred to server 40 with ambient temperature data by the temperature sensor generation of electronic label read/write 20 through the communication network that links to each other with server 40.
Selectively, environment temperature can also be detected by described temperature-detecting device.The position that can read this temperature-detecting device away from bearing heating and RFID reader 20 is installed ON TRAINS to described temperature-detecting device, this position does not have other thermal source, and the temperature at this position can be represented the residing environment temperature of train.During train driving; When being installed in the electromagnetism place of this position temperature-detecting device process RFID reader 20; This temperature-detecting device can the fast detecting environment temperature and be transferred to the RFID reader 20 on ground to ambient temperature data, and be transferred to server 40 to the ambient temperature datas that obtain by RFID reader 20.Because the temperature-detecting device that is used for the testing environment temperature is different with the Bearing Installation location recognition code data of the temperature-detecting device that is used to detect bearing temperature, so server can be distinguished the temperature data of bearing and the temperature data of environment at an easy rate.
In server 40 systems; After the second communication interface receives the information of said RFID reader 20 transmissions; In data processing module, the information that is received is reduced processing, restore data such as relevant data of Bearing Installation location recognition code data, bearing designation and production firm and bearing temperature, environment temperature; Base modules 4021 is confirmed the dynamic temperature alarm threshold value of bearing according to information such as bearing designation, production firm, Bearing Installation position, environment temperatures; 4022 pairs of bearing temperature data of judge module are analyzed, and judge whether the temperature of bearing surpasses the temperature alarming threshold value.If the temperature of bearing exceeds the temperature alarming threshold value, alarm module 4023 just sends warning message, and further, this warning message comprises the installation site information of alerting signal and bearing, and wherein this installation site information is carried the identification code of installation site.For example: when the temperature of bearing exceeds the temperature alarming threshold value; Alarm module 4023 can send warning message and comprise identification code of alerting signal, Bearing Installation position etc.; Therefore vehicle maintenance and maintainer can be according to this warning messages; Find out the bearing of temperature anomaly, in time take safeguard measure, guaranteed the safety of driving.In the present embodiment, the processing of the temperature data obtained is carried out in server 40.
In the present embodiment,, simplified circuit structure, reduced volume, can reduce cost to a certain extent because temperature sensor is arranged on the electronic label chip.Simultaneously, the relatively independent power supply power supply of employing makes its reliability strengthen for temperature sensor 117 power supplies and can other functions in the RFID label chip 11 not exerted an influence.
In addition,, need not attach power supply, therefore further simplify circuit structure, reduce cost owing to be used for the temperature-detecting device of train parts; And obtain power supply through electromagnetic induction; Can save the energy to a certain extent; Strengthen environmental-protecting performance, also strengthened the security that electronic tag uses to a certain extent, further strengthened the reliability that electronic tag uses and serviceable life of having prolonged electronic tag.
Electronic tag in the present embodiment also can be worked in rugged environments such as the high temperature of rolling stock bearing and utmost point cold weather environmental low temperature, strong vibration, strong jamming; Temperature sensor in the electronic tag has very wide temperature measurement range, can measure the temperature of its working environment quickly and accurately; Electronic tag can quickly and reliably reach electronic label read/write, the quick temperature measurement in the time of adapting to the rolling stock fast running and the data transmission requirement that is sent to ground with the bearing related data measuring temperature in addition.Because the temperature data that system obtains is more accurate; And can according to specific time and site suiting measures to different conditions, flexibly, reasonably confirm the temperature alarming threshold value of each bearing; So the bearing temperature warning message that system provides is more accurate; Whether vehicle maintenance and maintainer can judge bearing like a cork whether abnormal high temperature takes place, have fault to need maintenance immediately, and the car inspection and repair personnel can be easy to find very exactly out of order bearing according to the installation site identification code of bearing.
Temperature-detecting device in the present embodiment can provide accurate dynamic temperature alarming threshold value according to the bearing and the environment temperature of different model; And can measure the temperature of bearing more exactly; Therefore can report to the police to the bearing proposition of temperature anomaly exactly; Thereby reduced the hot box rate of false alarm, improved the reliability of system, strengthened the safety guarantee of vehicle operating; Reduce the time that the vehicle failover is overhauled and need be out of service simultaneously and reduced the cost of car inspection and repair, thereby more can be close to the users demand.
The above embodiment has only expressed several kinds of embodiments of the utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model claim.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the utility model design, can also make some distortion and improvement, these all belong to the protection domain of the utility model.Therefore, the protection domain of the utility model patent should be as the criterion with accompanying claims.
Claims (8)
1. temperature measurement system that is used for the train parts; It is characterized in that said system comprises the temperature-detecting device that is used for the train parts that is installed on the train axle, be installed in that rail is other to be received the said temperature-detecting device that is used for the train parts and send the RFID reader of data and the server that communicates through communication network and said RFID reader; Wherein, said temperature-detecting device and RFID reader communicate with wireless non-contacting EM coupling mode, and said communication network comprises cordless communication network and/or wireline communication network; Said temperature-detecting device comprises the passive RFID electronic label chip that is integrated with temperature sensor and the electronic label antenna that is connected with said electronic label chip, and it is power module, the modulation circuit that is used to launch, receive and store data, demodulator circuit, storer, control circuit, electrify restoration circuit, the pierce circuit that said RFID label chip is supplied power that said passive RFID electronic label chip comprises temperature sensor, esd protection circuit, rectification circuit, obtain said electronic label antenna from peripheral electromagnetic field electric energy conversion becomes stable output voltage; Two input ends of said esd protection circuit link to each other with two electrodes of electronic label antenna respectively; Two input ends of said rectification circuit link to each other with two electrodes of said electronic label antenna respectively; The output terminal of said rectification circuit links to each other with the input end of power module; The output terminal of said power module is connected respectively to the power input of said demodulator circuit, electrify restoration circuit, pierce circuit, memory circuitry, control circuit, modulation circuit and said temperature sensor circuit; The signal input part of said demodulator circuit links to each other with first electrode of said electronic label antenna; The signal output part of said demodulator circuit is connected to said control circuit; Said electrify restoration circuit signal output part is connected to said control circuit; Said pierce circuit signal output part is connected to said control circuit, and said memory circuitry links to each other with control circuit through bus; The signal input part of said modulator is connected with control circuit, and the signal output part of said modulator is connected with second electrode of said electronic label antenna; Store ID number of bearing, installation site information, bearing designation, production firm, the production time of bearing in the storer of said passive RFID electronic label chip and use and overhaul the information recorded data; Said RFID reader also comprises second temperature sensor that is used for the testing environment temperature.
2. the temperature measurement system that is used for the train parts according to claim 1; It is characterized in that; In said temperature-detecting device; Said power module comprises first output terminal and second output terminal, and said first output terminal is the said power module first voltage regulation unit output terminal, and first output terminal is to remove temperature sensor other circuit module power supply to locate in the described passive RFID electronic label chip; Said second output terminal is the said power module second voltage regulation unit output terminal, and said second output terminal is that said temperature sensor provides stable power more, for said temperature sensor is supplied power separately.
3. the temperature measurement system that is used for the train parts according to claim 2 is characterized in that, in said temperature-detecting device, can be connected with first decoupling and second decoupling respectively on the input and output side of said second voltage regulation unit.
4. the temperature measurement system that is used for the train parts according to claim 3; It is characterized in that; In said temperature-detecting device, the controlled switch that also be provided with the control circuit control that receives in the said RFID chip on the said second voltage regulation unit input end, when collecting temperature data not, breaks off.
5. the temperature measurement system that is used for the train parts according to claim 1; It is characterized in that; In said temperature-detecting device, said temperature sensor comprises the temperature sensing circuit module that obtains temperature data and said temperature sensing circuit module is obtained the AD converter module that temperature information converts the temperature data of binary format into.
6. a kind of temperature measurement system that is used for the train parts according to claim 1; It is characterized in that said RFID reader comprises: antenna, radio receiving transmitting module, baseband signal processing module, the detection residing environment temperature of said RFID reader and first communication interface that communicates with its second temperature sensor, with server as train residing environment temperature when stating the RFID reader; Said antenna, radio receiving transmitting module, baseband signal processing module, first communication interface are linked in sequence successively, and said second temperature sensor links to each other with baseband signal processing module.
7. a kind of temperature measurement system that is used for the train parts according to claim 1; It is characterized in that said server comprises: the second communication interface that communicates with said RFID reader, the information that is received carried out the data processing module of data processing; Wherein, said data processing module specifically comprise judge module that whether base modules of confirming temperature threshold, the temperature of judging said target detection thing exceed said temperature threshold reach when judged result be to send the alarm module of warning message when being; Data communication between second communication interface Control Server and the RFID reader gives said electronic label read/write or reception from the electronic label read/write data sent data transmission; Data processing module is handled the data that receive; Restore various types of data; According to ID number of the bearing relevant that receives, the installation site information of bearing with the target detection thing and with bearing relevant bearing designation, production firm, production time, use and overhaul and write down and ambient temperature data; Confirm the temperature alarming threshold value, and the abnormal temperature that exceeds the temperature alarming threshold value is provided warning message.
8. a kind of temperature measurement system that is used for the train parts according to claim 1; It is characterized in that; Environment temperature can also be obtained by described temperature-detecting device; The position that can read this temperature-detecting device away from bearing heating and RFID reader is installed ON TRAINS to described temperature-detecting device, this position does not have other thermal source, and the temperature at this position can be represented the residing environment temperature of train; During train driving; When being installed in the electromagnetism place of this position temperature-detecting device process RFID reader; This temperature-detecting device can the fast detecting environment temperature and be transferred to the RFID reader on ground to ambient temperature data, and be transferred to server to the ambient temperature data that obtains by the RFID reader.
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| CN2011202403206U CN202159352U (en) | 2011-07-08 | 2011-07-08 | Temperature measurement system used for train part |
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| CN2011202403206U CN202159352U (en) | 2011-07-08 | 2011-07-08 | Temperature measurement system used for train part |
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