CN203519204U - Temperature sensing bulb detection circuit - Google Patents
Temperature sensing bulb detection circuit Download PDFInfo
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- CN203519204U CN203519204U CN201320666273.0U CN201320666273U CN203519204U CN 203519204 U CN203519204 U CN 203519204U CN 201320666273 U CN201320666273 U CN 201320666273U CN 203519204 U CN203519204 U CN 203519204U
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Abstract
The utility model discloses a temperature sensing package detection circuitry. Wherein, this circuit includes: the power supply circuit is used for providing electric energy for the temperature sensing bulb detection circuit; a temperature compensation correction circuit comprising: one or more detection circuits, each detection circuit comprising: the power interface is connected with the power circuit and used for acquiring the electric energy of the power circuit; the series interface, the standard resistance circuit, connect with series interface, the temperature sensing bulb measured connects with detection circuit in series through the series interface, the resistance value of the standard resistance circuit and temperature sensing bulb measured is the same with the transformation rate of the temperature; the voltage acquisition circuit is connected with the serial interface and is used for acquiring the serial voltage of the serial interface; and the resistance value detection circuit is connected with the voltage acquisition circuit and is used for acquiring the test results of the series voltage and the reference voltage. Adopt the utility model discloses to solved the technical problem that detects temperature sensing package resistance and sequencing inefficiency among the prior art, realized the resistance and the sequencing that detect the temperature sensing package fast accurately.
Description
Technical field
The utility model relates to temperature-sensitive bag detection field, in particular to a kind of temperature-sensitive packet detection circuit.
Background technology
The temperature-sensitive using in frequency conversion is at present surrounded by the plurality of specifications such as 15K, 20K, 50K, and the temperature-sensitive bag that the outer machine of frequency conversion uses is also connected to the temperature-sensitive bag of 15K, 20K, 30K on same connection terminal simultaneously.The resistance value that temperature-sensitive wraps at 25 ℃ is its most important parameter, this test value has determined that whether temperature-sensitive bag is qualified, detecting these temperature-sensitive bags is at present to measure its resistance to judge that whether it is qualified by multimeter, yet environment temperature can have influence on the resistance measured value of temperature-sensitive bag, therefore to detect temperature-sensitive bag no qualified, need to place it in calibration cell and can test after temperature stabilization, this method wastes time and energy.In addition, what some types were used is 2 cores or 3 core temperature-sensitive bags, and whether the sequence that also will detect three core temperature-sensitive bags except wanting detected resistance is correct, if because three core temperature-sensitive bag misorderings on same terminal can cause that air conditioner operation makes mistakes equally.But the temperature-sensitive bag being connected on same terminal can bring very large problem to detection, because the temperature-sensitive bag resistance of different size influenced by ambient temperature there will be crossover phenomenon; Therefore manually use multimeter to detect the needed time to a temperature-sensitive bag and at least want about 30 seconds, efficiency is very low.
For above-mentioned problem, effective solution is not yet proposed at present.
Utility model content
The utility model embodiment provides a kind of temperature-sensitive packet detection circuit, at least to solve, detects temperature-sensitive bag resistance and the inefficient technical matters of sequence in prior art.
According to the embodiment of the present invention aspect, a kind of temperature-sensitive packet detection circuit is provided, comprising: power circuit, is used to temperature-sensitive packet detection circuit that electric energy is provided; Temperature compensation correcting circuit, comprising: one or more testing circuits, and each testing circuit comprises: power interface, is connected with power circuit, for obtaining the electric energy of power circuit; Serial interface, measuring resistance circuit, is connected with serial interface, and tested temperature-sensitive bag is connected in series by serial interface and testing circuit, and measuring resistance circuit is identical with the interconversion rate of temperature with the resistance of tested temperature-sensitive bag; Voltage acquisition circuit, is connected with serial interface, for obtaining the series voltage of serial interface; Resistance testing circuit, be connected with voltage acquisition circuit, for obtaining the test result of series voltage and reference voltage, wherein, when the error of series voltage and reference voltage meets preset range, obtain tested temperature-sensitive bag resistance and normal the first test result of sequence, when the error of series voltage and reference voltage does not meet preset range, obtain tested temperature-sensitive bag resistance and the second abnormal test result of sequence.
Further, temperature-sensitive packet detection circuit also comprises: temperature-sensitive cored is counted input circuit, is connected, for inputting the core number of temperature-sensitive bag with resistance testing circuit; Each testing circuit detects respectively the series voltage of a core of tested temperature-sensitive bag.
Further, each testing circuit comprises respectively: power input interface, for accessing electric energy; One end of measuring resistance circuit is connected with power input interface, and the other end of measuring resistance circuit is connected with tested temperature-sensitive bag by serial interface, for tested temperature-sensitive bag being carried out to temperature compensation and line order, proofreaies and correct.
Further, reference voltage comprises the first reference voltage and the second reference voltage, wherein, resistance testing circuit comprises: one or more resistances detect electronic circuit, and each resistance detects the voltage that electronic circuit is respectively used to detect a serial interface, wherein, each resistance detects electronic circuit and comprises: the first voltage comparator, first end is connected with voltage acquisition circuit, and the second end is inputted the first reference voltage, and the 3rd end outputs test result; Second voltage comparer, first end is connected with voltage acquisition circuit, and the second end is inputted the second reference voltage, the 3rd end outputs test result, wherein, the 3rd end of the first voltage comparator and second voltage comparer is when output the first test result, and the signal of output is high level; The 3rd end of the first voltage comparator and second voltage comparer is when output the second test result, and the signal of output is low level.
Further, temperature-sensitive packet detection circuit also comprises: communication interface, is connected with the 3rd end of the first voltage comparator and the 3rd end of second voltage comparer respectively, for exporting the level signal generating according to test result.
Further, temperature-sensitive packet detection circuit also comprises: display circuit, is connected with resistance testing circuit, for showing test results.
Further, display circuit comprises: pilot lamp, be connected with resistance testing circuit, and for the light on and off indication test result by pilot lamp, wherein, when getting the first test result, pilot lamp is bright; When getting the second test result, pilot lamp goes out.
Further, temperature-sensitive packet detection circuit also comprises: power supply electronic circuit, by power interface, be connected with temperature compensation correcting circuit, resistance testing circuit and display circuit respectively, be used to temperature compensation correcting circuit, resistance testing circuit and display circuit power supply.
In the utility model embodiment, adopt the utility model, tested temperature-sensitive bag is connected in series by serial interface and testing circuit, after voltage acquisition circuit is obtained the series voltage of serial interface, resistance testing circuit is when the error of series voltage and reference voltage meets preset range, obtain normal the first test result of tested temperature-sensitive bag, when the error of series voltage and reference voltage does not meet preset range, obtain the second abnormal test result of tested temperature-sensitive bag, wherein, the resistance and the sequence that normally refer to temperature-sensitive bag are normal, thereby without being placed in to calibration cell, tested temperature-sensitive bag waits for temperature stabilization, in temperature arbitrarily, under humidity environment, all can detect tested temperature-sensitive bag, as long as tested temperature-sensitive bag is connected, in 0.1S, can be completed, thereby solved and in prior art, detected temperature-sensitive bag resistance and the inefficient technical matters of sequence, the resistance and the sequence that detect rapidly and accurately temperature-sensitive bag have been realized.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, forms the application's a part, and schematic description and description of the present utility model is used for explaining the utility model, does not form improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is according to the schematic diagram of a kind of temperature-sensitive packet detection circuit of the utility model embodiment;
Fig. 2 is a kind of optional temperature-sensitive packet detection circuit schematic diagram according to the utility model embodiment;
Fig. 3 counts input circuit schematic diagram according to a kind of optional temperature-sensitive cored of the utility model embodiment;
Fig. 4 is a kind of optional temperature compensation correcting circuit schematic diagram according to the utility model embodiment;
Fig. 5 is a kind of optional resistance testing circuit schematic diagram according to the utility model embodiment;
Fig. 6 is a kind of optional communication interface schematic diagram according to the utility model embodiment; And
Fig. 7 is according to a kind of optional communication interface schematic diagram embodiment illustrated in fig. 6.
Embodiment
In order to make those skilled in the art person understand better the utility model scheme, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the embodiment of the utility model part, rather than whole embodiment.Embodiment based in the utility model, those of ordinary skills are not making the every other embodiment obtaining under creative work prerequisite, all should belong to the scope of the utility model protection.
It should be noted that, the term " first " in instructions of the present utility model and claims and above-mentioned accompanying drawing, " second " etc. are for distinguishing similar object, and needn't be for describing specific order or precedence.The data that should be appreciated that such use suitably can exchanged in situation, so as embodiment of the present utility model described herein can with except diagram here or describe those order enforcement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, for example, those steps or unit that the process that has comprised series of steps or unit, method, system, product or equipment are not necessarily limited to clearly list, but can comprise clearly do not list or for these processes, method, product or equipment intrinsic other step or unit.
According to the utility model embodiment, a kind of temperature-sensitive packet detection circuit is provided, as shown in Figure 1, this circuit can comprise: power circuit 10, is used to temperature-sensitive packet detection circuit that electric energy is provided; Temperature compensation correcting circuit 30, comprising: one or more testing circuits 31, and each testing circuit 31 comprises: power interface 311, is connected with power circuit 10, for obtaining the electric energy of power circuit; Serial interface 313; Measuring resistance circuit 315, is connected with serial interface, and tested temperature-sensitive bag is connected in series by serial interface and testing circuit, and measuring resistance circuit is identical with the interconversion rate of temperature with the resistance of tested temperature-sensitive bag; Voltage acquisition circuit 33, is connected with serial interface 313, for obtaining the series voltage of serial interface; Resistance testing circuit 50, be connected with voltage acquisition circuit 33, for obtaining the test result of series voltage and reference voltage, wherein, when the error of series voltage and reference voltage meets preset range, obtain tested temperature-sensitive bag resistance and normal the first test result of sequence, when the error of series voltage and reference voltage does not meet preset range, obtain tested temperature-sensitive bag resistance and the second abnormal test result of sequence.
Wherein, the measuring resistance circuit in above-described embodiment can for tested temperature-sensitive bag similar resistance and the correct temperature-sensitive bag of line order.
Adopt the utility model, tested temperature-sensitive bag is connected in series by serial interface and testing circuit, after voltage acquisition circuit is obtained the series voltage of serial interface, resistance testing circuit is when the error of series voltage and reference voltage meets preset range, obtain normal the first test result of tested temperature-sensitive bag, when the error of series voltage and reference voltage does not meet preset range, obtain the second abnormal test result of tested temperature-sensitive bag, wherein, the resistance and the sequence that normally refer to temperature-sensitive bag are normal, thereby without being placed in to calibration cell, tested temperature-sensitive bag waits for temperature stabilization, in temperature arbitrarily, under humidity environment, all can detect tested temperature-sensitive bag, as long as tested temperature-sensitive bag is connected, in 0.1S, can be completed, thereby solved and in prior art, detected temperature-sensitive bag resistance and the inefficient technical matters of sequence, the resistance and the sequence that detect rapidly and accurately temperature-sensitive bag have been realized.
Further, temperature-sensitive packet detection circuit also comprises: temperature-sensitive cored is counted input circuit 70, is connected, for inputting the core number of temperature-sensitive bag with resistance testing circuit; Described in each, testing circuit detects respectively the series voltage of a core of described tested temperature-sensitive bag.
Further, each testing circuit comprises respectively: power input interface, for accessing electric energy; One end of measuring resistance circuit is connected with power input interface, and the other end of measuring resistance circuit is connected with tested temperature-sensitive bag by serial interface, for tested temperature-sensitive bag being carried out to temperature compensation and line order, proofreaies and correct.
As shown in Figure 2, this temperature-sensitive packet detection circuit can be arranged on pcb board, and particularly, temperature-sensitive packet detection circuit can also comprise: temperature-sensitive cored is counted input circuit, is connected, for inputting the core number of temperature-sensitive bag with resistance testing circuit; The quantity of serial interface is corresponding with the core number of temperature-sensitive bag, and a core of tested temperature-sensitive bag is connected in series by a serial interface and testing circuit; Wherein, voltage acquisition circuit is for obtaining the series voltage of each serial interface.
It can be one 6 toggle switch that is that temperature-sensitive cored is as shown in Figure 3 counted input circuit, and particularly, when detecting the tested temperature-sensitive bag of single core, 1-2 is OFF, and measuring resistance circuit and tested temperature-sensitive bag are connected on 1-2 port; As detect the temperature-sensitive bag of 2 cores, and 1-2-3-4 is in OFF state, and measuring resistance circuit (this temperature-sensitive bag is also 2 cores) and tested temperature-sensitive bag are connected on 1-2-3-4 port; As detect 3 core temperature-sensitive bags, 1-2-3-4-5-6 is OFF state.
In above-described embodiment of the present utility model, testing circuit can comprise: one or more sub-loops, and each sub-loop can comprise respectively: power input interface, for accessing electric energy; Measuring resistance circuit, one end is connected with power input interface, and the other end is connected with tested temperature-sensitive bag by serial interface, for tested temperature-sensitive bag being carried out to temperature compensation and line order, proofreaies and correct.
Testing circuit in above-described embodiment can comprise internal wiring and external slot, inserts a qualified temperature-sensitive bag (being the measuring resistance circuit in above-described embodiment) of performance and arrives temperature compensation port, can compensation temperature change the impact on tested temperature-sensitive bag resistance.Test any temperature-sensitive bag, just connect temperature-sensitive bag that performance is qualified to this port, the voltage signal (being the signal of series voltage) that internal circuit can detect on this port (being serial interface) is processed.
Particularly, as shown in Figure 4, temperature compensation and line order are proofreaied and correct as follows: tested temperature-sensitive bag and measuring resistance circuit are together in series by serial interface, from serial interface, draw NO.1, NO.2, tri-test points of NO.3; Because temperature-sensitive bag can change along with variation of ambient temperature, therefore no matter temperature variation is to how many, if tested temperature-sensitive bag is normal, the resistance of two temperature-sensitive bags should be identical, and the voltage of test point is 0.5*Vcc forever so; Line order correction principle is the same, and three core temperature-sensitive envelope curve order mistakes, mean resistance value mistake, and the resistance value of so tested temperature-sensitive bag and measuring resistance circuit is just different, and the series voltage of NO.1, NO.2, tri-points of NO.3 can not be just 0.5*Vcc.
Therefore after the temperature compensation and the correction of line order of above-mentioned measuring resistance circuit, whether the series voltage that only need to test NO.1, NO.2, tri-points of NO.3 is that 0.5*Vcc can know that whether temperature-sensitive bag is normal, and the method has changed the shortcoming that temperature-sensitive bag can only be tested in calibration cell.
Further, reference voltage can comprise the first reference voltage and the second reference voltage, wherein, resistance testing circuit comprises: one or more resistances detect electronic circuit, and each resistance detects the voltage that electronic circuit is respectively used to detect a serial interface, wherein, each resistance detects electronic circuit and comprises: the first voltage comparator, first end is connected with voltage acquisition circuit, and the second end is inputted the first reference voltage, and the 3rd end outputs test result; Second voltage comparer, first end is connected with voltage acquisition circuit, and the second end is inputted the second reference voltage, the 3rd end outputs test result, wherein, the 3rd end of the first voltage comparator and second voltage comparer is when output the first test result, and the signal of output is high level; The 3rd end of the first voltage comparator and second voltage comparer is when output the second test result, and the signal of output is low level.The first voltage comparator in above-described embodiment and second voltage comparer can be preferably operational amplifier LM224.
Particularly, resistance testing circuit in above-described embodiment can comprise two amplifier chip LM224, respectively each road voltage of three core temperature-sensitive bags (3 tunnels altogether) is compared to detection with 2 road reference voltages, the temperature-sensitive bag that therefore detects 3 cores need to carry out 2*3=6 time relatively altogether; Equally, single core temperature-sensitive bag carries out 2 comparisons, and 2 core temperature-sensitive bags carry out 4 comparisons, and voltage comparative result can drive peripheral circuit that test result is shown.
Fig. 5 is that the resistance of single core temperature-sensitive bag detects electronic circuit, if the temperature-sensitive bag of test 3 cores needs 3 illustrated resistances to detect electronic circuit.The principle of work that resistance shown in Fig. 5 detects electronic circuit is as follows:
Tested temperature-sensitive bag is through after temperature compensation and the correction of line order, and two passages the series voltage of NO.1 being sent into operational amplifier LM224 detect simultaneously, judge that respectively whether the up-down error of temperature-sensitive bag is normal.If it is the optimum value of calculating according to the error range of temperature-sensitive bag itself and contact resistance, the faint variation of temperature etc. that temperature-sensitive bag surpasses this value of 8%(8%), OUTPUT output signal (0), LED shinny (i.e. the second test result), otherwise it is normal to export 1(), LED do not work (i.e. the first test result).OUTPUT1 in figure and OUTPUT2 are respectively the 3rd end of the first voltage comparator and the 3rd end of second voltage comparer.Testing circuit input voltage is 5V in the present embodiment, the normal series voltage of tested temperature-sensitive bag is 2.5V, allow that in the present embodiment series voltage has 8% error, the normal series voltage of tested temperature-sensitive bag, in the scope of 2.2V-2.8V, all thinks that tested temperature-sensitive bag is normal.Wherein, in the present embodiment, the first reference voltage can be 2.8V, and the second reference voltage can be 2.2V.The signal (being test result) of OUTPUT output goes to drive the pilot lamp in display circuit 90 to show test results again, according to the light on and off situation of pilot lamp with regard to known test result.
More specifically, the internal core of LM224 has 4 operational amplifiers.Each core temperature-sensitive bag needs 2 operational amplifiers (being voltage comparator) to detect error and lower error, the test upper limit: NO.1 is 2.5V under normal circumstances, is less than the first reference voltage 2.8V, and Output rusults is 1; Test lower limit: NO.1 is 2.5V under normal circumstances, is greater than the second reference voltage 2.2V, and Output rusults is 1; If series voltage NO.1B not in the scope of 2.2-2.8V, has illustrated that the resistance of tested temperature-sensitive bag variation has occurred and caused the series voltage of sampling that variation has occurred, the output of OUTPUT1, OUTPUT2 will become 0.According to 1,0 logic level, remove to drive pilot lamp, test result just can show.
In above-described embodiment of the present utility model, temperature-sensitive packet detection circuit can also comprise: communication interface 110, is connected with the 3rd end of the first voltage comparator and the 3rd end of second voltage comparer respectively, for exporting the level signal generating according to test result.
As shown in Figure 6, communication interface 110 can comprise a ULN2003 chip and peripheral components, and this chip collects signal of formation by all test results, and sends by TXD port.If temperature-sensitive contracts out now abnormal, what send is low level 0, if temperature-sensitive bag no problem, what send is high level 1.
This device communications protocol is simple, the logic level of the compatible multiple different size of energy, and PORT COM as shown in Figure 6 can be included as 3 heart yearns, is respectively RXD, TXD, GND.Wherein, RXD: be the port of the reception sense command of temperature-sensitive packet detection circuit: main frame sends more than 50ms high level (can compatible TTL and CMOS level) to temperature-sensing tank test circuit, device detects tested temperature-sensitive bag automatically, if do not detected, needs this port to drag down into low level; TXD: be the port of the transmission test result of temperature-sensitive packet detection circuit: be high level order to start to detect in the situation that at RXD, represent when this port is high level that detected temperature-sensitive bag is normal; When this port is low level, represent that temperature-sensitive bag exists abnormal, need to reject; GND: be the ground wire (namely negative pole) of temperature-sensitive packet detection circuit, together with can receiving with the power cathode of main frame to reach the object of communication.
As shown in Figure 7, in this embodiment, communication interface 110 can be realized with ULN2003 chip, particularly, tested temperature-sensitive bag to three cores detects, the testing result of 6 road voltages can be sent into respectively to the input end of ULN2003 chip, if testing result is normal, 6 road CH passages are all output as high level 1 and send; Ruo You mono-tunnel testing result is abnormal, and the TXD port of output terminal can be drawn as low level 0 and send.
According in above-described embodiment of the present utility model, temperature-sensitive packet detection circuit can also comprise: display circuit 90, is connected with resistance testing circuit, for showing test results.
Particularly, display circuit 90 can also comprise: pilot lamp, be connected with resistance testing circuit, and for the light on and off indication test result by pilot lamp, wherein, when getting the first test result, pilot lamp is bright; When getting the second test result, pilot lamp goes out.Preferably, pilot lamp can be LED lamp.
More specifically, tested temperature-sensitive bag is placed on to tested port (being the serial interface in above-described embodiment) upper, turns on the power switch and can test, 6 LED on finder can judge that whether temperature-sensitive bag is correct.If temperature-sensitive bag is completely normal, 6 LED are all luminous, have any one LED not work and illustrate that tested temperature-sensitive bag exists extremely, need to take off analysis by tested temperature-sensitive bag.
Further, temperature-sensitive packet detection circuit also comprises: power circuit, by power interface, be connected with temperature compensation correcting circuit, resistance testing circuit and display circuit respectively, and be used to temperature compensation correcting circuit, resistance testing circuit and display circuit power supply.
Particularly, power circuit can be arranged on pcb board, power supply be mainly circuit all on pcb board provide test needed power supply, low-voltage AC/DC all can, voltage 5V-15V all can, preferably use 5.0V.
According to the utility model embodiment on the other hand, also provide a kind of temperature-sensitive packet inspection method, having comprised: obtain the series voltage of serial interface, wherein, serial interface has been the interface that tested temperature-sensitive bag and measuring resistance circuit are connected in series; Compare series voltage and reference voltage; When the error of series voltage and reference voltage meets preset range, obtain normal the first test result of tested temperature-sensitive bag; When the error of series voltage and reference voltage does not meet preset range, obtain the second abnormal test result of tested temperature-sensitive bag.
Adopt the utility model, tested temperature-sensitive bag is connected in series by serial interface and testing circuit, after voltage acquisition circuit is obtained the series voltage of serial interface, resistance testing circuit is when the error of series voltage and reference voltage meets preset range, obtain normal the first test result of tested temperature-sensitive bag, when the error of series voltage and reference voltage does not meet preset range, obtain the second abnormal test result of tested temperature-sensitive bag, wherein, the resistance and the sequence that normally refer to temperature-sensitive bag are normal, thereby without being placed in to calibration cell, tested temperature-sensitive bag waits for temperature stabilization, in temperature arbitrarily, under humidity environment, all can detect tested temperature-sensitive bag, as long as tested temperature-sensitive bag is connected, in 0.1S, can be completed, thereby solved and in prior art, detected temperature-sensitive bag resistance and the inefficient technical matters of sequence, the resistance and the sequence that detect rapidly and accurately temperature-sensitive bag have been realized.
It should be noted that, for aforesaid each embodiment of the method, for simple description, therefore it is all expressed as to a series of combination of actions, but those skilled in the art should know, the utility model is not subject to the restriction of described sequence of movement, because according to the utility model, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in instructions all belongs to preferred embodiment, and related action and module might not be that the utility model is necessary.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that can add essential general hardware platform by software according to the method for above-described embodiment and realize, can certainly pass through hardware, but in a lot of situation, the former is better embodiment.Understanding based on such, the part that the technical solution of the utility model contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in a storage medium (as ROM/RAM, magnetic disc, CD), comprise that some instructions are with so that a station terminal equipment (can be mobile phone, computing machine, server, or the network equipment etc.) carry out the method for each embodiment of the utility model.
According to the utility model embodiment on the other hand, also provide a kind of temperature-sensitive package detection device, having comprised: voltage acquisition module, for obtaining the series voltage of serial interface, wherein, serial interface is the interface that tested temperature-sensitive bag and measuring resistance circuit are connected in series; Voltage comparison module, for comparing series voltage and reference voltage; The first result acquisition module, while meeting preset range for the error at series voltage and reference voltage, obtains normal the first test result of tested temperature-sensitive bag; The second result acquisition module, while not meeting preset range for the error at series voltage and reference voltage, obtains the second abnormal test result of tested temperature-sensitive bag.
Adopt the utility model, after voltage acquisition module obtains the series voltage of serial interface, voltage comparison module is series voltage and reference voltage relatively, the first result acquisition module is when the error of series voltage and reference voltage meets preset range, obtain normal the first test result of tested temperature-sensitive bag, the second result acquisition module is not when the error of series voltage and reference voltage meets preset range, obtain the second abnormal test result of tested temperature-sensitive bag, wherein, the resistance and the sequence that normally refer to temperature-sensitive bag are normal, thereby without being placed in to calibration cell, tested temperature-sensitive bag waits for temperature stabilization, in temperature arbitrarily, under humidity environment, all can detect tested temperature-sensitive bag, as long as tested temperature-sensitive bag is connected, in 0.1S, can be completed, thereby solved and in prior art, detected temperature-sensitive bag resistance and the inefficient technical matters of sequence, the resistance and the sequence that detect rapidly and accurately temperature-sensitive bag have been realized.
As can be seen from the above description, the utility model has been realized following technique effect:
Without temperature-sensitive bag is placed in to calibration cell, wait for temperature stabilization, under temperature, humidity environment, all can detect temperature-sensitive bag arbitrarily, as long as temperature-sensitive bag is connected, in 0.1S, can be completed;
Use above-mentioned detection method to go for the detection of any temperature-sensitive bag, can select from circuit the temperature-sensitive bags such as test single core, 2 cores or 3 cores;
Use above-mentioned detection method can judge that whether the sequence of 2 cores or above each core of temperature-sensitive bag is correct, if there is the situation of line order mistake, be judged as this root temperature-sensitive bag abnormal;
This circuit, except can testing manually, also with communication function, can be connected and send test result with other advance and retreat material mechanizing circuits, to realize the full-automation of temperature-sensitive bag, detects.
This circuit can other temperature sensors of extend testing, as PTC, NTC resistance, use this circuit test not need that equally NTC, PTC resistance are placed in to calibration cell and wait for temperature stabilization; As long as receive on this circuit, the test that all can will begin in a minute under temperature humidity arbitrarily, has saved the test duration greatly, increases work efficiency.
Above-mentioned the utility model embodiment sequence number, just to describing, does not represent the quality of embodiment.
In above-described embodiment of the present utility model, the description of each embodiment is all emphasized particularly on different fields, in certain embodiment, there is no the part of detailed description, can be referring to the associated description of other embodiment.
Unit as separating component explanation can or can not be also physically to separate, and the parts that show as unit can be or can not be also physical locations, can be positioned at a place, or also can be distributed in a plurality of network element.Can select according to the actual needs some or all of unit wherein to realize the object of the present embodiment scheme.
In addition, each functional unit in each embodiment of the utility model can be integrated in a processing unit, can be also that the independent physics of unit exists, and also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and also can adopt the form of SFU software functional unit to realize.
If the form of SFU software functional unit of usining integrated unit realizes and during as production marketing independently or use, can be stored in a computer read/write memory medium.Understanding based on such, the all or part of of the part that the technical solution of the utility model contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprises that some instructions are used so that a computer equipment (can be personal computer, server or the network equipment etc.) is carried out all or part of step of each embodiment method of the utility model.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, ROM (read-only memory) (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), portable hard drive, magnetic disc or CDs.
Below be only preferred implementation of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (8)
1. a temperature-sensitive packet detection circuit, is characterized in that, comprising:
Power circuit, is used to temperature-sensitive packet detection circuit that electric energy is provided;
Temperature compensation correcting circuit, comprising:
One or more testing circuits, described in each, testing circuit comprises:
Power interface, is connected with described power circuit, for obtaining the described electric energy of described power circuit;
Serial interface,
Measuring resistance circuit, is connected with described serial interface, and tested temperature-sensitive bag is connected in series by serial interface and described testing circuit, and described measuring resistance circuit is identical with the interconversion rate of temperature with the resistance of described tested temperature-sensitive bag;
Voltage acquisition circuit, is connected with described serial interface, for obtaining the series voltage of described serial interface;
Resistance testing circuit, is connected with described voltage acquisition circuit, for obtaining the test result of described series voltage and reference voltage.
2. temperature-sensitive packet detection circuit according to claim 1, is characterized in that, described temperature-sensitive packet detection circuit also comprises:
Temperature-sensitive cored is counted input circuit, is connected, for inputting the core number of described temperature-sensitive bag with described resistance testing circuit;
Described in each, testing circuit detects respectively the series voltage of a core of described tested temperature-sensitive bag.
3. temperature-sensitive packet detection circuit according to claim 2, is characterized in that, described in each, testing circuit comprises respectively:
Power input interface, for accessing described electric energy;
One end of described measuring resistance circuit is connected with described power input interface, and the other end of described measuring resistance circuit is connected with described tested temperature-sensitive bag by described serial interface, for described tested temperature-sensitive bag being carried out to temperature compensation and line order, proofreaies and correct.
4. temperature-sensitive packet detection circuit according to claim 2, it is characterized in that, described reference voltage comprises the first reference voltage and the second reference voltage, wherein, described resistance testing circuit comprises: one or more resistances detect electronic circuit, described in each, resistance detects the voltage that electronic circuit is respectively used to detect a described serial interface, and wherein, described in each, resistance detection electronic circuit comprises:
The first voltage comparator, first end is connected with described voltage acquisition circuit, and the second end is inputted described the first reference voltage, and the 3rd end is exported described test result;
Second voltage comparer, first end is connected with described voltage acquisition circuit, and the second end is inputted described the second reference voltage, and the 3rd end is exported described test result,
Wherein, the 3rd end of described the first voltage comparator and described second voltage comparer is when described the first test result of output, and the signal of output is high level; The 3rd end of described the first voltage comparator and described second voltage comparer is when described the second test result of output, and the signal of output is low level.
5. temperature-sensitive packet detection circuit according to claim 4, is characterized in that, described temperature-sensitive packet detection circuit also comprises:
Communication interface, is connected with the 3rd end of described the first voltage comparator and the 3rd end of described second voltage comparer respectively, for exporting the level signal generating according to described test result.
6. temperature-sensitive packet detection circuit according to claim 1, is characterized in that, described temperature-sensitive packet detection circuit also comprises:
Display circuit, is connected with described resistance testing circuit, for showing described test result.
7. temperature-sensitive packet detection circuit according to claim 6, is characterized in that, described display circuit comprises:
Pilot lamp, is connected with described resistance testing circuit, for indicating described test result by the light on and off of described pilot lamp,
Wherein, described in when getting described the first test result, pilot lamp is bright; Described in when getting described the second test result, pilot lamp goes out.
8. temperature-sensitive packet detection circuit according to claim 6, is characterized in that, described temperature-sensitive packet detection circuit also comprises:
Power supply electronic circuit, is connected with described temperature compensation correcting circuit, described resistance testing circuit and described display circuit by power interface respectively, is used to described temperature compensation correcting circuit, described resistance testing circuit and the power supply of described display circuit.
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CN201320666273.0U CN203519204U (en) | 2013-10-25 | 2013-10-25 | Temperature sensing bulb detection circuit |
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CN201320666273.0U CN203519204U (en) | 2013-10-25 | 2013-10-25 | Temperature sensing bulb detection circuit |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104568227A (en) * | 2013-10-25 | 2015-04-29 | 珠海格力电器股份有限公司 | Temperature sensing bulb detection circuit, method and device |
CN104713664A (en) * | 2015-03-23 | 2015-06-17 | 苏州鸿普精密模具有限公司 | Vehicle air conditioner outer temperature sensor detecting device |
CN104730398A (en) * | 2015-04-09 | 2015-06-24 | 青岛歌尔声学科技有限公司 | Device precision measurement circuit |
CN104019927B (en) * | 2014-06-23 | 2016-08-17 | 珠海格力电器股份有限公司 | Data detection method, device and system for temperature sensing bulb of water heater |
CN108761207A (en) * | 2018-08-06 | 2018-11-06 | 珠海格力智能装备有限公司 | Temperature sensing circuit testing method and device |
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2013
- 2013-10-25 CN CN201320666273.0U patent/CN203519204U/en not_active Expired - Fee Related
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
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CN104568227A (en) * | 2013-10-25 | 2015-04-29 | 珠海格力电器股份有限公司 | Temperature sensing bulb detection circuit, method and device |
CN104568227B (en) * | 2013-10-25 | 2017-11-14 | 珠海格力电器股份有限公司 | temperature sensing bulb detection circuit, method and device |
CN104019927B (en) * | 2014-06-23 | 2016-08-17 | 珠海格力电器股份有限公司 | Data detection method, device and system for temperature sensing bulb of water heater |
CN104713664A (en) * | 2015-03-23 | 2015-06-17 | 苏州鸿普精密模具有限公司 | Vehicle air conditioner outer temperature sensor detecting device |
CN104730398A (en) * | 2015-04-09 | 2015-06-24 | 青岛歌尔声学科技有限公司 | Device precision measurement circuit |
CN108761207A (en) * | 2018-08-06 | 2018-11-06 | 珠海格力智能装备有限公司 | Temperature sensing circuit testing method and device |
CN108761207B (en) * | 2018-08-06 | 2024-05-03 | 珠海格力智能装备有限公司 | Temperature sensing circuit testing method and device |
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