CN203837817U - Probe point adjusting apparatus for infrared temperature measurement system - Google Patents

Probe point adjusting apparatus for infrared temperature measurement system Download PDF

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Publication number
CN203837817U
CN203837817U CN201420294042.6U CN201420294042U CN203837817U CN 203837817 U CN203837817 U CN 203837817U CN 201420294042 U CN201420294042 U CN 201420294042U CN 203837817 U CN203837817 U CN 203837817U
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voltage
circuit
probe
analog
electric heater
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隆青强
毕磊
刘红明
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隆青强
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Abstract

The utility model discloses a probe point adjusting apparatus for an infrared temperature measurement system. The apparatus comprises a rod-shaped electric heater used for providing heat sources for a probe of an infrared temperature measurement system, wherein the fluctuation range of a temperature output from the electric heater is within the fluctuation range of a preset temperature; a voltage detection circuit connected with the probe and used for detecting and sending voltages output by the probe; and a voltage display circuit connected with the voltage detection circuit and used for receiving and displaying the voltages output by the probe. The electric heater is adopted by the apparatus to serve as a heat source to ensure that stable reference heat sources can be provided for a long period of time. Meanwhile, voltage detection, data processing and other functions are integrated on the same chip, so that the circuit structure of the apparatus is simplified, the number of elements of circuits is reduced, and the space occupied by the circuits is minimized. The electric heater and the voltage display circuit of the apparatus are arranged in the same housing, so that operators can conveniently observe a value of voltages output from the probe and no other staff is needed to specially observe the voltages and report the value, and thus the point adjusting efficiency is improved.

Description

A kind of infrared temperature measurement system probe check and punctuate device
Technical field
The utility model relates to infrared temperature-test technology field, specifically, relates to a kind of infrared temperature measurement system probe check and punctuate device.
Background technology
Infrared journal temperature detection system (THDS) is the line security monitoring equipment for railway transport field, the temperature of train axle when it can reflect through this system exactly, and by communication network, the temperature information of axletree is transferred to information center.Information center can obtain according to the temperature information of axletree the safety case of train, thereby finds in time and process the problem that train may occur, with this, ensures the safe operation of train.
When measurement train axle temperature is spent, the axletree of train need to appear in the thermometric visual field of THDS probe.The probe check and punctuate device (referred to as check and punctuate device) of THDS is with the instrument of helping adjust THDS probe thermometric visual field, the reliability of this instrument directly has influence on the accuracy of THDS probe detection train axle temperature acquired results, and it is to guaranteeing that train axle temperature detection is authentic and valid, guarantee driving safety is significant.
Now widely used THDS probe check and punctuate device mainly comprises voltage table and as the perfume (or spice) (being directly about 5~8mm) of thermal source.When carrying out the probe check and punctuate of THDS, check and punctuate device is arranged on rail, and voltage table is connected with the signal output part of THDS probe.Temperature while burning with perfume (or spice) provides thermal source reference point for check and punctuate device, measures the height of the voltage of THDS probe output with voltage table.When the voltage of THDS probe output reaches peak value, show that now fragrant residing position is the target center that THDS pops one's head in.
Existing check and punctuate device uses the perfume (or spice) of burning to be used as thermal source, and fragrant because self discontinuity of material has determined that the consistance of the temperature that it produces when the burning is poor, and be also easily subject to the impact (temperature for example producing in sleet sky or during the fragrant burning in strong wind sky is unstable) of external environment.Like this, this thermal source also just cannot be for check and punctuate device provides stable reference point, thereby make final check and punctuate result inaccurate.
Based on above-mentioned situation, need a kind of device that can carry out check and punctuate to THDS probe accurately, easily badly.
Utility model content
For addressing the above problem, the utility model provides a kind of infrared temperature measurement system probe check and punctuate device, and described device comprises:
Bar-shaped electric heater, it is used to the probe of infrared temperature measurement system that thermal source is provided, and the fluctuation range of the temperature of described electric heater output is in preset temperature fluctuation range;
Voltage detecting circuit, it is connected with described probe, for detection of and send the voltage of described probe output;
Voltage display circuit, it is connected with described voltage detecting circuit, for receiving and show the voltage of described probe output.
According to an embodiment of the present utility model, described bar-shaped electric heater comprises single head heat-generating pipe.
According to an embodiment of the present utility model, the span of the diameter of the focus that described bar-shaped electric heater forms comprises [3mm, 8mm].
According to an embodiment of the present utility model, described electric heater and voltage display circuit are arranged in same housing, between described electric heater and voltage display circuit, are provided with thermal insulation board.
According to an embodiment of the present utility model, described voltage detecting circuit comprises:
Analog to digital conversion circuit, it is connected with described probe, for the analog voltage signal of described probe output is converted to digital voltage signal;
Data processing circuit, it is connected with analog-digital conversion circuit as described, for producing and export corresponding control signal according to described digital voltage signal, shows the numerical value of the analog voltage signal of described probe output to control described voltage display circuit.
According to an embodiment of the present utility model, the connected mode between analog-digital conversion circuit as described and probe is wired connection or wireless connections.
According to an embodiment of the present utility model, described device also comprises:
Accumulator, it is used to described bar-shaped electric heater and voltage detecting circuit that power supply is provided.
According to an embodiment of the present utility model, analog-digital conversion circuit as described comprises:
Bleeder circuit, it is connected with described probe, for the analog voltage signal of described probe output is carried out to step-down;
Analog to digital converter, it is connected with described bleeder circuit, for the analog voltage signal after step-down is converted to digital voltage signal;
Reference voltage circuit, its input end is connected with described accumulator, and output terminal is connected with described analog to digital converter, for voltage signal that described accumulator is provided, after conversion, offers described analog to digital converter, the reference voltage of usining as described analog to digital converter.
According to an embodiment of the present utility model, analog-digital conversion circuit as described also comprises:
Voltage limit value circuit, its one end is connected with the input end of described analog to digital converter, and the other end is connected with ground, for described analog to digital converter is carried out to overvoltage protection.
According to an embodiment of the present utility model, described voltage display circuit comprises LED charactron or liquid crystal display.
According to an embodiment of the present utility model, described device also comprises:
Warning circuit, it is connected with described voltage detecting circuit, and when the voltage detecting when described voltage detecting circuit is greater than predeterminated voltage, described voltage detecting circuit is to described warning circuit outputting alarm signal, to drive described warning circuit to send warning information.
According to an embodiment of the present utility model, described warning circuit comprises hummer and/or light emitting diode.
The THDS probe check and punctuate device that the utility model provides combines the necessary process of probe check and punctuate operation, has carried out the design of Highgrade integration.This device adopts electric heater as thermal source, and guaranteeing provides long-time, stable reference thermal source for THDS probe.Meanwhile, by the functions such as voltage detecting, data processing are integrated on same chip, simplify the circuit structure of device, reduced circuit component and circuit takes up space.
This device is set together electric heater and voltage display circuit, make operating personnel can observe to aspect the magnitude of voltage of THDS probe output, and no longer need special personnel to be responsible for observation and the count off of voltage, and reduced the flow process of THDS probe check and punctuate, improved check and punctuate efficiency.
While moving on the searchlighting point target surface of electric heater at THDS probe, whether this device can automatic decision goes out this position is voltage max, if it is provides light signal and/or voice signal to point out, to remind operating personnel.
Through site test repeatedly, this device can replace the THDS probe check and punctuate device of current use in function, in the process of using, can simplify work flow, improves operating efficiency.This contributes to guarantee the accuracy of the intact and measurement data of THDS equipment, thereby ensures the safe operation of train.
Other features and advantages of the utility model will be set forth in the following description, and, partly from instructions, become apparent, or understand by implementing the utility model.The purpose of this utility model and other advantages can be realized and be obtained by specifically noted structure in instructions, claims and accompanying drawing.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, will do simple introduction to needed accompanying drawing in embodiment or description of the Prior Art below:
Fig. 1 is according to the structural drawing of the infrared temperature measurement system probe check and punctuate device of an embodiment of the utility model;
Fig. 2 be according to the analog to digital conversion circuit of an embodiment of the utility model partial circuit figure;
Fig. 3 is according to the partial circuit figure of the warning circuit of an embodiment of the utility model.
Embodiment
Below with reference to drawings and Examples, describe embodiment of the present utility model in detail, to the utility model, how application technology means solve technical matters whereby, and the implementation procedure of reaching technique effect can fully understand and implement according to this.It should be noted that, only otherwise form conflict, each embodiment in the utility model and each feature in each embodiment can mutually combine, and formed technical scheme is all within protection domain of the present utility model.
Meanwhile, in the following description, many details have been set forth for illustrative purposes, so that the thorough understanding to the utility model embodiment to be provided.Yet, it will be apparent to those skilled in the art that the utility model can detail or described ad hoc fashion here implement.
Fig. 1 shows the structural drawing of the infrared temperature measurement system probe check and punctuate device that the present embodiment provides.As shown in Figure 1, the infrared temperature measurement system probe check and punctuate device 101 that the present embodiment provides mainly comprises bar-shaped electric heater 102, voltage detecting circuit 103, voltage display circuit 104 and accumulator 105.
Accumulator 105 is connected with voltage detecting circuit 103 with bar-shaped electric heater 102 respectively, for bar-shaped electric heater 102 and voltage detecting circuit 103 provide power supply.The present embodiment, by using accumulator 105 to be used as the power supply of each electricity consumption devices such as voltage detecting circuit 103 in device and bar-shaped electric heater 102, so just does not need from the external world, to obtain power supply by wire.Meanwhile, external power supply is generally 220V high-voltage power supply, thus adopt accumulator 105 to provide power supply also just not need complicated voltage conversion circuit, thus simplified the structure of whole device, reduced the volume of whole device, contribute to improve the portability of device.
In order to guarantee that accumulator 105 can provide stable power supply for a long time, in the present embodiment, accumulator 105 adopts jumbo lithium battery.In the situation that there is no outer power supply source, lithium battery can meet the on-the-spot request for utilization of 1.5 hours.Meanwhile, accumulator 105 also disposes charging inlet, after electric weight exhausts, can also repeat accumulator to charge like this, for using next time, has improved the practicality of whole device.
As shown in Figure 1, bar-shaped electric heater 102 is connected with accumulator 105.In the present embodiment, bar-shaped electric heater 102 adopts single head heat-generating pipes, and single head heat-generating pipe is when energising, and its one end can generate heat and form the spherical thermal source that a diameter is 4mm left and right, its fluctuation range of temperature after temperature stabilization very little (conventionally ± 2K in).Like this, single head heat-generating pipe just can provide for the probe for THDS thermal source stable, small size, thereby ensures accuracy and the reliability of THDS probe being carried out to the resulting result of check and punctuate.
It should be noted that, in other embodiment of the present utility model, the temperature fluctuation range of the bar-shaped electric heater adopting can also be other reasonable values, such as ± 2K, ± 5K etc., the utility model is not limited to this.Simultaneously, in other embodiment of the present utility model, bar-shaped electric heater also can select other reasonably can provide the capacitor of focus stable, small size, the diameter of the focus that bar-shaped electric heater produces can also be other reasonable values, such as 3mm to 8mm etc., the utility model is not limited to this.
Particularly, single head heat-generating pipe adopts metal heating wire to produce heat.Wherein, metal heating wire is mainly divided into two kinds of ferrum-chromium-aluminum electrothermal alloy and nickel chromium triangle electrothermal alloys.Compared to nickel chromium triangle aluminium electrothermal alloy, ferrum-chromium-aluminum electrothermal alloy has following characteristics: serviceability temperature is too high, and for example the maximum operation (service) temperature of HRE Aludirome silk in atmosphere can reach 1400 ℃; Long service life; The surface loading allowing is large; Antioxygenic property is good, after its surface oxidation, can generate AI 2o 3film, and AI 2o 3film has good inoxidizability and high resistivity, thus the further oxidation of resistance alloy inside; Proportion is less than nickel-chrome; Resistivity is high; Anti-sulphur is good; Price is starkly lower than nickel chromium triangle aluminium electrothermal alloy.
But ferrum-chromium-aluminum electrothermal alloy is along with temperature raises, and its plasticity performance strengthens.Aludirome intensity is at high temperature lower simultaneously.
And compared to ferrum-chromium-aluminum electrothermal alloy, nickel chromium triangle electrothermal alloy has following characteristics: the slight height under high temperature; After cooling down after long-term use, material can not become fragile again; Fully, after oxidation, its radiance is higher than the radiance of ferrum-chromium-aluminum electrothermal alloy; Nonmagnetic; Outside sulphur removal atmosphere, there is good corrosion resistance.
The present embodiment, by test of many times, preferably adopts ferrum-chromium-aluminum electrothermal alloy (0Cr27A17Mo2) to be used as electric heater.The power of the electric heater wherein finally obtaining is 5W left and right, can take into account like this electric power supply of accumulator 105 and the optimization of THDS output signal resolution in output power.In the present embodiment, electric heater is that diameter is the bar-shaped thermal source of 5mm left and right, be not more than ± 2K of the fluctuation range of the temperature of its output.The shape of the thermal source so just using to existing check and punctuate device (fragrant) is similar, thereby convenient operation personnel look for searchlighting point.
Compared to existing check and punctuate device, adopt the perfume (or spice) of burning as thermal source, the present embodiment adopts electric heater can guarantee consistance and the stability of provided temperature as thermal source, is not also vulnerable to the impact of external environment simultaneously.So just the accuracy for the check and punctuate result for finally obtaining provides guarantee.
After bar-shaped electric heater 102 energisings, produce stable thermal source, thereby provide focus to THDS.Now THDS probe 100 can produce the analog voltage signal corresponding with the temperature of above-mentioned thermal source.As shown in Figure 1, can detect this analog voltage signal with 103 of 100 voltage detecting circuits being connected of THDS probe, and the result that detection is obtained sends to voltage display circuit 104.
In the present embodiment, voltage detecting circuit 103 mainly comprises analog to digital conversion circuit 103a and data processing circuit 103b.Wherein, analog to digital conversion circuit 103a is connected with THDS probe 100, for the analog voltage signal of THDS probe output is converted to digital voltage signal.Digital processing circuit 103b is electrically connected between analog to digital conversion circuit 103a and voltage display module 104, for producing and export corresponding control signal according to the digital voltage signal of analog to digital conversion circuit 103a output, to control voltage display circuit 104, show the numerical value of the analog voltage signal of THDS probe 100 outputs.User just can carry out the check and punctuate of THDS probe according to the shown magnitude of voltage of voltage display circuit 104, obtains the searchlighting point position of THDS probe.
In order further to reduce cost and the volume of device, miniaturization with implement device, the present embodiment in same chip, adopts the single-chip microcomputer that is built-in with analog-digital conversion function to complete analog-digital conversion function and data processing function the major function integrated chip of the major function chip of analog to digital conversion circuit (being analog to digital converter), data processing circuit.Certainly, in other embodiment of the present utility model, above-mentioned functions can also adopt different chips and circuit to complete, and the utility model is not limited to this.
Particularly, the present embodiment adopts HT66FU40 single-chip microcomputer to carry out analog to digital conversion and data processing.HT66FU40 single-chip microcomputer is the Flash single-chip microcomputer that a A/D type has 8 high-performance reduced instruction set computers.This single-chip microcomputer has a series of functions and characteristic, and the characteristic that its Flash storer can repeatedly be programmed provides great convenience to user.
Storer aspect, this single-chip microcomputer has also comprised a RAM data-carrier store and an eeprom memory that can be used for storing the Nonvolatile datas such as sequence number, calibration data.Aspect analog feature, this single-chip microcomputer comprises 12 A/D converters of a hyperchannel and dual comparator function.This single-chip microcomputer is also with a plurality of uses timer module flexibly, can provide timing function, pulse to produce function and PWM produces function.
The built-in complete SPI of HT66FU40 single-chip microcomputer and I2C bus functionality, for deviser provides an interface of easily communicating by letter with external hardware.The internal protection characteristics such as its inner WatchDog Timer, low-voltage reset and low-voltage detection, additional outstanding anti-interference and esd protection performance, can guarantee single-chip microcomputer operation reliably under severe electromagnetic interference environment.
This single-chip microcomputer provides abundant HXT, LXT, ERC, HIRC and LIRC oscillator function option, and built-in complete system oscillator, without peripheral component.The ability that it dynamically switches between different working modes, for user provides an optimization single-chip microcomputer operation and has reduced the means of power consumption.
HT66FU40 single-chip microcomputer includes UART module, and it can support such as the data communication network between single-chip microcomputer, and low-cost PC is connected with the data between external unit, communicating by letter etc. between portable and battery supply set.
Outer added-time base function, I/O are used other characteristics such as flexible, this single-chip microcomputer can be widely used in various products, aspects such as electronic measuring instrument, environmental monitoring, hand-held survey instrument, domestic. applications, Electronic Control instrument, motor control.
This single-chip microcomputer can pass through a few peripheral cell, just can form the system of a collection analog to digital conversion, data processing, digital demonstration and sound-light prompting function.
In the present embodiment, analog to digital conversion circuit 103a comprises modulus bleeder circuit, reference voltage circuit and analog to digital converter.Wherein, in the present embodiment, analog to digital converter is integrated in HT66FU40 single-chip microcomputer U1.The constant voltage reference of a standard of analog-to-digital process need is used as the standard for manual sampling of analog to digital converter.But the accumulator that in the present embodiment, output voltage is 7.4V is along with the output of electric current, and the supply voltage of accumulator falls and can decrease, thereby causes the reference voltage of analog to digital converter unstable.
So, in the present embodiment, adopt reference voltage circuit to solve this problem.The input end of reference voltage circuit is connected with accumulator, and output terminal is connected with analog to digital converter, for voltage signal that accumulator is provided, after conversion, offers analog to digital converter, the reference voltage of usining as analog to digital converter.Particularly, adopt LM336 as the voltage stabilizing chip of reference voltage circuit in the present embodiment, Fig. 2 shows the partial circuit figure of this reference voltage circuit.
As shown in Figure 2, the positive terminal of LM336 is connected with the voltage output end BV of accumulator 104 by resistance R 5, and positive terminal is also connected with the reference voltage port VREF of analog to digital converter in single-chip microcomputer U1, and its negative pole end is connected with ground.LM336 is accurate 5V shunt regulator, its work be equivalent to a low-temperature coefficient, dynamic resistance is the 5V Zener diode of 0.2 ohm, fine setting section wherein can be finely tuned according to actual needs to reference voltage and temperature coefficient.In addition, between the positive terminal of LM336 and ground, be also connected with capacitor C 1, thus the voltage that makes LM336 output more accurately, stable.
In the present embodiment, because the reference voltage of analog to digital converter is 5V, and the voltage of THDS probe 100 analog voltage signals of exporting can reach 10V.So in order can normally to gather this analog voltage signal, just need to carry out voltage division processing to this analog voltage signal.Because the input impedance of analog to digital conversion circuit is megohm level, so in order to simplify circuit structure, reduce circuit volume and cost, when analog voltage signal is carried out to dividing potential drop, preferably adopt two identical resistance of resistance to carry out dividing potential drop to this analog voltage signal, thereby assurance analog to digital converter can correctly be sampled to this analog voltage signal.Analog to digital converter is converted to digital voltage signal by the analog voltage signal after the step-down of bleeder circuit output, and this digital voltage signal is transferred to output processing circuit 103b.
In addition, because the working environment of this device is field environment, so may cause the spread of voltage of THDS probe output.In order to prevent the overtension of THDS probe output, analog to digital converter is caused damage, in an embodiment of the present utility model, the analog to digital conversion 103a that leads the way also comprises voltage limiting circuit.
Particularly, in order to simplify analog to digital conversion degree circuit, reduce the number of elements of circuit, reduce circuit and take up space and cost, in the present embodiment, adopt the voltage stabilizing diode of 5.1V to be used as voltage limiting circuit.Wherein, the negative pole of voltage stabilizing diode is connected with the input end of analog to digital converter, and positive pole is connected with ground; the voltage of exporting when THDS probe surpasses after 10.2V; the voltage that is bleeder circuit output surpasses 5.1V, voltage stabilizing diode conducting, thus realize the overvoltage protection to analog to digital converter.
Again as shown in Figure 1, voltage display circuit 104 is connected with data processing circuit 103b.Data processing circuit 103b produces and exports corresponding control signal according to the digital voltage signal receiving, and shows the numerical value of the analog voltage signal of THDS probe output to control voltage display circuit 104.When electric heater 102 is nearer apart from the searchlighting point of THDS probe, the analog voltage that THDS probe is exported is also just larger, so the shown voltage value of voltage display circuit 104 is also just larger.User can analyze the searchlighting point position of THDS probe by the shown voltage value of voltage display circuit 104, thereby realizes the check and punctuate to THDS probe.
Existing check and punctuate device is measured the voltage signal of THDS probe output with voltage table, and voltage table is far away apart from operating personnel's check and punctuate position, is not easy to check the voltage output value of probe.Like this, while utilizing existing check and punctuate device to pop one's head in check and punctuate, just must need at least two operating personnels, increase operating cost, reduce operating efficiency.
In the present embodiment, voltage detecting circuit 103 is connected with the output terminal of THDS probe by data line, and meanwhile, voltage detecting circuit 103 is also arranged in same housing with voltage display circuit 104.Like this, user just can realize in hand-held mode reading THDS probe output in the situation that popping one's head in away from THDS.Compared to existing check and punctuate device, need at least two operating personnel can complete check and punctuate operation, this device only needs operating personnel just can complete all check and punctuate operations, has simplified work flow, has reduced operating personnel, has improved check and punctuate operating efficiency.
In addition, it should be noted that, in other embodiment of the present utility model, voltage detecting circuit and THDS probe can also adopt other rational connected modes to carry out data transmission, and such as wireless connections etc., the utility model is not limited to this.
Wherein, voltage display circuit 104 can adopt LED charactron or liquid crystal display, and certainly, in other embodiment of the present utility model, voltage display circuit 104 can also adopt other rational circuit forms, and the utility model is not limited to this.
Because the working environment of this device mostly is field environment, field environment daylight is strong, adopts charactron mode may make user cannot see the shown data of charactron completely clearly, and user experiences poor.So in the present embodiment, preferably adopt liquid crystal display to be used as the major function device of voltage voltage display circuit.
Liquid crystal display is common two polarization material, between these two polarization material, includes liquid crystal solution.When electric current flows through this crystal solution, can make crystal rearrange, so that light cannot see through crystal solution.Therefore, each crystal is just as window shutter, and it can allow light to pass, and page can block light.Liquid crystal display can completely, clearly be carried out data demonstration under high light, has improved user's experience, has facilitated field work.
It should be noted that, in other embodiment of the present utility model, voltage display circuit can also adopt other rational circuit forms, and the utility model is not limited to this.
As shown in Figure 1, in an embodiment of the present utility model, THDS probe check and punctuate device 101 can also comprise the warning circuit 106 being connected with data processing circuit 103b.In data processing circuit 103b, store the predeterminated voltage signal of the temperature of exporting corresponding to electric heater 102. when the data processing circuit 103b voltage signal that analysis obtains according to analog to digital conversion circuit 103a is greater than this predeterminated voltage signal over default threshold pressure differential, data processing circuit 103b will be to warning circuit 106 outputting alarm signals, to drive warning circuit 106 to send warning information.In the present embodiment, when the voltage obtaining when analysis is greater than predeterminated voltage and surpasses 0.08V, data processing circuit 103b is to warning circuit 106 outputting alarm signals.In the present embodiment, the value of predeterminated voltage is less than the maximum voltage value that THDS probe can be exported under relevant temperature, but the utility model is not limited to this.
As shown in Figure 3, in the present embodiment, warning circuit 104 includes hummer B1 and triode Q5.Wherein, the base stage of triode Q5 is connected with the alarm signal output port PE4 of single-chip microcomputer U1 in data processing circuit 103b by resistance R 10, and collector is connected with one end of hummer B1, and emitter-base bandgap grading is connected with ground, is connected with resistance R 11 between base stage and emitter-base bandgap grading.The other end of hummer B1 is connected with the Voltage-output port BV of accumulator 104 by resistance R 9.
When data processing circuit 103b analyzes the voltage obtain and is greater than predeterminated voltage and surpasses 0.08V, the alarm signal output port of data processing circuit 103b is by the alarm signal of output high level, so that the collector of triode Q5 and emitter-base bandgap grading conducting, thereby trigger hummer B1 and send the sound, prompting user now electric heater is on the searchlighting point of THDS probe.
It should be noted that, in other embodiment of the present utility model, warning circuit 104 can also adopt other rational circuit forms (light emitting diode for example, by the light on and off of light emitting diode, point out on the searchlighting point whether electric heater be in THDS probe), the utility model is not limited to this.
In order to strengthen the portability of this device, in the present embodiment, electric heater, voltage detecting circuit, voltage display circuit and accumulator are arranged in same housing.Meanwhile, because the temperature of electric heater output is higher, for example, so in order to guarantee the security of other devices, the present embodiment is also provided with thermal insulation board between electric heater and other devices (voltage detecting circuit, voltage display circuit and accumulator).
From foregoing description, can find out, the THDS probe check and punctuate device that the utility model provides combines the necessary process of probe check and punctuate operation, has carried out the design of Highgrade integration.This device adopts electric heater as thermal source, and guaranteeing provides long-time, stable reference thermal source for THDS probe.Meanwhile, by the functions such as voltage detecting, data processing are integrated on same chip, simplify the circuit structure of device, reduced circuit component and circuit takes up space.
This device is set together electric heater and voltage display circuit, make operating personnel can observe to aspect the magnitude of voltage of THDS probe output, and no longer need special personnel to be responsible for observation and the count off of voltage, and reduced the flow process of THDS probe check and punctuate, improved check and punctuate efficiency.
While moving on the searchlighting point target surface of electric heater at THDS probe, whether this device can automatic decision goes out this position is voltage max, if provide photoelectricity to point out, to remind operating personnel.
Through site test repeatedly, this device can replace current use THDS probe check and punctuate device in function, in the process of using, can simplify work flow, improves operating efficiency, has guaranteed the intact of THDS equipment, ultimate guarantee the safe operation of train.
It should be understood that embodiment disclosed in the utility model is not limited to ad hoc structure disclosed herein, treatment step or material, and it is alternative to extend to being equal to of these features that those of ordinary skill in the related art understand.It is to be further understood that as used herein term is only for describing the object of specific embodiment, and and do not mean that restriction.
Special characteristic, structure or characteristic that " embodiment " who mentions in instructions or " embodiment " mean to describe are in conjunction with the embodiments included at least one embodiment of the present utility model.Therefore, phrase " embodiment " or " embodiment " of each local appearance might not all refer to same embodiment to instructions in the whole text.
For convenient, a plurality of projects, structural unit, component units and/or material can appear in common list as used herein.Yet each element that these lists should be interpreted as in this list is identified as respectively unique member separately.Therefore,, in the situation that there is no reverse side explanation, in this list, neither one member can only appear at any other member's who is just interpreted as same list in common list actual equivalent based on them.In addition, can also be together with coming together with reference to various embodiment of the present utility model and example for the alternative of each element at this.Should be understood that, these embodiment, example and substitute and be not interpreted as equivalent each other, and be considered to autonomous representative separately of the present utility model.
In addition, described feature, structure or characteristic can any other suitable mode be attached in one or more embodiment.In the following description, provide some concrete details, such as length, width, shape etc., to provide the complete understanding to embodiment of the present utility model.Yet those skilled in the relevant art will understand, the utility model just can be realized without above-mentioned one or more concrete details, or also can adopt other method, the realization such as assembly, material.In other example, known structure, material or operation be not shown specifically or description in order to avoid fuzzy various aspects of the present utility model.
Although above-mentioned example is for illustrating that the utility model is in the principle of one or more application, but for a person skilled in the art, in the situation that not deviating from principle of the present utility model and thought, obviously can be in form, do various modifications and need not pay creative work in the details of usage and enforcement.Therefore, the utility model is limited by appending claims.

Claims (12)

1. an infrared temperature measurement system probe check and punctuate device, is characterized in that, described device comprises:
Bar-shaped electric heater, it is used to the probe of infrared temperature measurement system that thermal source is provided, and the fluctuation range of the temperature of described electric heater output is in preset temperature fluctuation range;
Voltage detecting circuit, it is connected with described probe, for detection of and send the voltage of described probe output;
Voltage display circuit, it is connected with described voltage detecting circuit, for receiving and show the voltage of described probe output.
2. device as claimed in claim 1, is characterized in that, described bar-shaped electric heater comprises single head heat-generating pipe.
3. device as claimed in claim 1 or 2, is characterized in that, the span of the diameter of the focus that described bar-shaped electric heater forms comprises [3mm, 8mm].
4. device as claimed in claim 1, is characterized in that, described electric heater and voltage display circuit are arranged in same housing, between described electric heater and voltage display circuit, are provided with thermal insulation board.
5. device as claimed in claim 1, is characterized in that, described voltage detecting circuit comprises:
Analog to digital conversion circuit, it is connected with described probe, for the analog voltage signal of described probe output is converted to digital voltage signal;
Data processing circuit, it is connected with analog-digital conversion circuit as described, for producing and export corresponding control signal according to described digital voltage signal, shows the numerical value of the analog voltage signal of described probe output to control described voltage display circuit.
6. device as claimed in claim 5, is characterized in that, the connected mode between analog-digital conversion circuit as described and probe is wired connection or wireless connections.
7. the device as described in claim 5 or 6, is characterized in that, described device also comprises:
Accumulator, it is used to described bar-shaped electric heater and voltage detecting circuit that power supply is provided.
8. device as claimed in claim 7, is characterized in that, analog-digital conversion circuit as described comprises:
Bleeder circuit, it is connected with described probe, for the analog voltage signal of described probe output is carried out to step-down;
Analog to digital converter, it is connected with described bleeder circuit, for the analog voltage signal after step-down is converted to digital voltage signal;
Reference voltage circuit, its input end is connected with described accumulator, and output terminal is connected with described analog to digital converter, for voltage signal that described accumulator is provided, after conversion, offers described analog to digital converter, the reference voltage of usining as described analog to digital converter.
9. device as claimed in claim 8, is characterized in that, analog-digital conversion circuit as described also comprises:
Voltage limit value circuit, its one end is connected with the input end of described analog to digital converter, and the other end is connected with ground, for described analog to digital converter is carried out to overvoltage protection.
10. device as claimed in claim 1, is characterized in that, described voltage display circuit comprises LED charactron or liquid crystal display.
11. devices as claimed in claim 1, is characterized in that, described device also comprises:
Warning circuit, it is connected with described voltage detecting circuit, and when the voltage detecting when described voltage detecting circuit is greater than predeterminated voltage, described voltage detecting circuit is to described warning circuit outputting alarm signal, to drive described warning circuit to send warning information.
12. devices as claimed in claim 11, is characterized in that, described warning circuit comprises hummer and/or light emitting diode.
CN201420294042.6U 2014-06-04 2014-06-04 Probe point adjusting apparatus for infrared temperature measurement system Expired - Fee Related CN203837817U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2553374A (en) * 2016-09-06 2018-03-07 Edwards Ltd Temperature sensor for a high speed rotating machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2553374A (en) * 2016-09-06 2018-03-07 Edwards Ltd Temperature sensor for a high speed rotating machine
US10837836B2 (en) 2016-09-06 2020-11-17 Edwards Limited Temperature sensor for a high speed rotating machine
GB2553374B (en) * 2016-09-06 2021-05-12 Edwards Ltd Temperature sensor for a high speed rotating machine

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