CN204924302U - Temperature, thing position integration detection instrument - Google Patents
Temperature, thing position integration detection instrument Download PDFInfo
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- CN204924302U CN204924302U CN201520739661.6U CN201520739661U CN204924302U CN 204924302 U CN204924302 U CN 204924302U CN 201520739661 U CN201520739661 U CN 201520739661U CN 204924302 U CN204924302 U CN 204924302U
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Abstract
The utility model discloses a temperature, thing position integration detection instrument, be in including the platform of weighing, control mainboard, display screen and integration weighing sensor, amplifier, converter and singlechip and temperature sensor on the control mainboard, wherein: weighing sensor the amplifier the converter with the singlechip temperature sensor electricity in proper order connects, the platform of weighing specifically includes the sensor elastomer and is located the weighing sensor of its bottom, the utility model discloses a temperature, thing position integration detection instrument, its characteristics that have high integrated integrated design, the volume is littleer, the design structure is more reasonable, and it has functions such as temperature detection, level detection and material feed controlling concurrently.
Description
Technical field
The utility model relates to measures equipment technology field, particularly relates to a kind of temperature, thing position integrative detection instrument.
Background technology
As everyone knows, level gauging is often referred to and detects the height of material in closed in industrial processes or open container (solid or liquid level), if carry out continuous print detection to height of materials, is called continuous coverage.If only whether arrive a certain position to height of materials to carry out detection and be called spacing measurement.The instrument completing this measurement task is called level meter.
The level meter often used in prior art mainly contains traditional resistance and revolves level-sensing device, radar level gauge, ultrasonic material level detection unit and tuning fork level-sensing device etc.But the above-mentioned level meter position of object in the container closed that simultaneously can not detect various medium and temperature.Traditional level meter is simple survey location device, cannot realize locating fast and accurately material and the FEEDBACK CONTROL of feed start and stop.
Utility model content
The purpose of this utility model is to provide a kind of temperature, thing position integrative detection instrument, to solve the problem.Along with the progress of development in science and technology, all trades and professions are all being contributed for energy-conserving and environment-protective, the deviser of this product sets out in line with the theory of energy-conserving and environment-protective, create the thing position of the advantages such as this novel practical, control accuracy be high, easy for installation, temperature integrative detection instrument, application and extensively, availablely manufactures etc. with boiler industry, food processing, medical manufacturing, building materials.
The temperature that the utility model provides, thing position integrative detection instrument, the position of the object that can detect various medium in the container closed and temperature.Achieve and material is located fast and accurately, particularly utilize the treatment technology of microprocessor, can realize and host computer Direct Communication, along with improving constantly of industrial processes automaticity, thing position, temperature sounder have become a kind of required device in process control, from the position, control etc. of tun tank, hopper, automatic detection to the feed proportioning system, production technology of mixed allocation plurality of raw materials and bulk material, particle, bulk, liquid etc., this product can be applied to.
The temperature that the utility model provides, thing position integrative detection instrument, the advantages such as its product is little with volume, and lightweight, Installation and Debugging are convenient, decrease material, and installation cost.Traditional " level-sensing device is revolved in resistance " " radar level gauge " " ultrasonic material level detection unit " " tuning fork level-sensing device " can be replaced greatly.
In order to achieve the above object, the technical solution of the utility model is achieved in that
The utility model provides a kind of temperature, thing position integrative detection instrument, comprise weighing platform, control mainboard, display screen and the LOAD CELLS, amplifier, converter and the single-chip microcomputer that are integrated on described control mainboard and temperature sensor, wherein: described LOAD CELLS, described amplifier, described converter and described single-chip microcomputer, described temperature sensor are electrically connected successively;
Described weighing platform comprises sensor elastomer and is positioned at the LOAD CELLS bottom it; For hopper and the material that is contained in hopper on described sensor elastomer.
Preferably, can embodiment as one; Described LOAD CELLS is YZC-1B variant weighing and force-measuring transducer.
Preferably, can embodiment as one; Described converter is V/F Voltage-to-frequency Converter.
Preferably, can embodiment as one; Described single-chip microcomputer is 8031 single-chip microcomputers in MCS-51 series monolithic.
Preferably, can embodiment as one; Described temperature, thing position integrative detection instrument also comprise key board unit, memory circuit arrangement and printing equipment; Described single-chip microcomputer is electrically connected with described key board unit, described memory circuit arrangement and printing equipment respectively.
Compared with prior art, the advantage of the utility model embodiment is:
A kind of temperature that the utility model provides, thing position integrative detection instrument, wherein, analyze said temperature, thing position integrative detection instrument primary structure principle known: this temperature, thing position integrative detection instrument its mainly comprise weighing platform, control mainboard, display screen and the LOAD CELLS, amplifier, converter and the single-chip microcomputer that are integrated on described control mainboard and temperature sensor, wherein: described LOAD CELLS is electrically connected with described amplifier, described converter and described single-chip microcomputer, described temperature sensor successively; Described weighing platform comprises sensor elastomer and is positioned at the LOAD CELLS bottom it simultaneously; Sensor elastomer is positioned at the top of described LOAD CELLS;
The elastomeric effect of the sensor is hopper and the material that is contained in hopper mainly; Above-mentioned LOAD CELLS, then according to the deflection that material gravity makes described sensor elastomer deform, exports the electric signal be directly proportional to gravity, and exports electric signal;
The electric signal that above-mentioned amplifier sends for receiving described LOAD CELLS, and after the electric signal that LOAD CELLS exports is amplified, then export to described converter;
Above-mentioned converter is used for reception amplifier amplifying signal, and carries out A/D conversion, and the frequency signal converted to directly sends into follow-up single-chip microcomputer;
Above-mentioned single-chip microcomputer is for the frequency signal after receiving converter conversion and analyze and obtain the instantaneous digital quantity of gravity, sends to described display screen to carry out instantaneous weight value display corresponding to instantaneous digital quantity; Described single-chip microcomputer also compares with the set-point preset for the instantaneous weight value corresponding according to current instantaneous digital quantity, judges whether current instantaneous weight value is more than or equal to default set-point; If so, then control external-feeding equipment and stop feeding operation and display measurement final value, show container loading simultaneously and terminate; Described single-chip microcomputer also for detect material drop to below described check weighing platform time, system is to material signal or alerting signal of falling vacant;
In sum, analyze known by above-mentioned control action, said temperature, thing position integrative detection instrument, can material in inspection instrument, and after the some that material reaches higher, stop molten device to feed action; Simultaneously material arrive cry a small amount of after control to send to lack and expect that signal or alerting signal carry out FEEDBACK CONTROL in real time.Meanwhile, the temperature that the utility model embodiment provides, thing position integrative detection instrument, can also assist the Real-Time Monitoring carrying out temperature.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The circuit principle structure schematic diagram of the temperature that Fig. 1 provides for the utility model embodiment, thing position integrative detection instrument;
The temperature that Fig. 2 provides for the utility model embodiment, scene schematic diagram when thing position integrative detection instrument is applied in boiler fuel breeze material position;
Fig. 3 a is respectively the structural representation of a kind of sensor elastomer in temperature that the utility model embodiment provides, thing position integrative detection instrument;
Fig. 3 b is respectively the structural representation of another kind of sensor elastomer in temperature that the utility model embodiment provides, thing position integrative detection instrument;
Fig. 3 c is respectively the structural representation of another sensor elastomer in temperature that the utility model embodiment provides, thing position integrative detection instrument;
Fig. 3 d is respectively also a kind of in temperature that the utility model embodiment provides, thing position integrative detection instrument structural representation of sensor elastomer;
Weighing platform part master in the temperature that Fig. 4 a provides for the utility model embodiment, thing position integrative detection instrument looks sectional structure schematic diagram;
Sectional structure schematic diagram overlooked by weighing platform part in the temperature that Fig. 4 b provides for the utility model embodiment, thing position integrative detection instrument;
Base part master in the temperature that Fig. 5 a provides for the utility model embodiment, thing position integrative detection instrument looks sectional structure schematic diagram;
Base part cross section structural representation in the temperature that Fig. 5 b provides for the utility model embodiment, thing position integrative detection instrument;
Top design of part schematic diagram in the temperature that Fig. 6 provides for the utility model embodiment, thing position integrative detection instrument;
Extension rod design of part schematic diagram in the temperature that Fig. 7 provides for the utility model embodiment, thing position integrative detection instrument;
Additional long rod part master in the temperature that Fig. 8 a provides for the utility model embodiment, thing position integrative detection instrument looks sectional structure schematic diagram;
Additional long rod part cross section structural representation in the temperature that Fig. 8 b provides for the utility model embodiment, thing position integrative detection instrument;
The working method schematic diagram of the temperature that Fig. 9 provides for the utility model embodiment, thing position integrative detection instrument;
Description of reference numerals:
Weighing platform 1; Control mainboard 2; Display screen 3;
Sensor elastomer 10; LOAD CELLS 11; Amplifier 12; Converter 13; Single-chip microcomputer 14; Temperature sensor 15; Base 16; Top 17; Interior extension rod 18; Outer extension rod 20.
Embodiment
Be clearly and completely described the technical solution of the utility model below in conjunction with accompanying drawing, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it should be noted that, orientation or the position relationship of the instruction such as term " " center ", " on ", D score, "left", "right", " vertically ", " level ", " interior ", " outward " they be based on orientation shown in the drawings or position relationship; be only the utility model and simplified characterization for convenience of description; instead of instruction or imply the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore can not be interpreted as restriction of the present utility model.In addition, term " first ", " second ", " the 3rd " only for describing object, and can not be interpreted as instruction or hint relative importance.
In description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, and such as, can be fixedly connected with, also can be removably connect, or connect integratedly; Can be mechanical connection, also can be electrical connection; Can be directly be connected, also indirectly can be connected by intermediary, can be the connection of two element internals.For the ordinary skill in the art, concrete condition the concrete meaning of above-mentioned term in the utility model can be understood.
Also by reference to the accompanying drawings the utility model is described in further detail below by specific embodiment.
See Fig. 1, the utility model embodiment provides a kind of temperature, thing position integrative detection instrument, comprise weighing platform 1, control mainboard 2, display screen 3 and the LOAD CELLS 11, amplifier 12, converter 13 and the single-chip microcomputer 14 that are integrated on described control mainboard 2 and temperature sensor 15, wherein: described LOAD CELLS 11, described amplifier 12, described converter 13 and described single-chip microcomputer 14, described temperature sensor 15 are electrically connected successively;
Described weighing platform 1 comprises sensor elastomer 10 and is positioned at the above-mentioned LOAD CELLS 11 bottom it; For hopper and the material that is contained in hopper on described sensor elastomer 10; The deflection of described LOAD CELLS 11 for making described sensor elastomer deform according to material gravity, exports the electric signal be directly proportional to gravity, and exports electric signal;
The electric signal that described amplifier 12 sends for receiving described LOAD CELLS, and after the electric signal that LOAD CELLS exports is amplified, then export to described converter;
Described converter 13 for reception amplifier amplifying signal, and carries out A/D conversion, and the frequency signal converted to directly sends into follow-up single-chip microcomputer;
Described single-chip microcomputer 14 is for the frequency signal after receiving converter conversion and analyze and obtain the instantaneous digital quantity of gravity, sends to described display screen to carry out instantaneous weight value display corresponding to instantaneous digital quantity; Described single-chip microcomputer also compares with the set-point preset for the instantaneous weight value corresponding according to current instantaneous digital quantity, judges whether current instantaneous weight value is more than or equal to default set-point; If so, then control external-feeding equipment and stop feeding operation and display measurement final value, show container loading simultaneously and terminate; Described single-chip microcomputer also for detect material drop to below described check weighing platform time, system is to material signal or alerting signal of falling vacant;
It should be noted that, being specifically constructed as follows of the temperature provided in the utility model embodiment, thing position integrative detection instrument;
In concrete structure; Described LOAD CELLS is YZC-1B variant weighing and force-measuring transducer.
In concrete structure; Described converter is V/F Voltage-to-frequency Converter.
In concrete structure; Described single-chip microcomputer is 8031 single-chip microcomputers in MCS-51 series monolithic.
In concrete structure; Described temperature, thing position integrative detection instrument also comprise key board unit, memory circuit arrangement and printing equipment; Described single-chip microcomputer is electrically connected with described key board unit, described memory circuit arrangement and printing equipment respectively.
Analyze said temperature, thing position integrative detection instrument primary structure principle known: this temperature, thing position integrative detection instrument its mainly comprise weighing platform, control mainboard, display screen and the LOAD CELLS, amplifier, converter and the single-chip microcomputer that are integrated on described control mainboard and temperature sensor, wherein: described LOAD CELLS is electrically connected with described amplifier, described converter and described single-chip microcomputer, described temperature sensor successively; Described weighing platform comprises sensor elastomer and is positioned at the LOAD CELLS bottom it simultaneously; Sensor elastomer is positioned at the top of described LOAD CELLS;
The elastomeric effect of the sensor is hopper and the material that is contained in hopper mainly; Above-mentioned LOAD CELLS, then according to the deflection that material gravity makes described sensor elastomer deform, exports the electric signal be directly proportional to gravity, and exports electric signal;
The electric signal that above-mentioned amplifier sends for receiving described LOAD CELLS, and after the electric signal that LOAD CELLS exports is amplified, then export to described converter;
Above-mentioned converter is used for reception amplifier amplifying signal, and carries out A/D conversion, and the frequency signal converted to directly sends into follow-up single-chip microcomputer;
Above-mentioned single-chip microcomputer is for the frequency signal after receiving converter conversion and analyze and obtain the instantaneous digital quantity of gravity, sends to described display screen to carry out instantaneous weight value display corresponding to instantaneous digital quantity; Described single-chip microcomputer also compares with the set-point preset for the instantaneous weight value corresponding according to current instantaneous digital quantity, judges whether current instantaneous weight value is more than or equal to default set-point; If so, then control external-feeding equipment and stop feeding operation and display measurement final value, show container loading simultaneously and terminate; Described single-chip microcomputer also for detect material drop to below described check weighing platform time, system is to material signal or alerting signal of falling vacant;
In sum, analyze known by above-mentioned control action, said temperature, thing position integrative detection instrument, can material in inspection instrument, and after the some that material reaches higher, stop molten device to feed action; Simultaneously material arrive cry a small amount of after control to send to lack and expect that signal or alerting signal carry out FEEDBACK CONTROL in real time.Meanwhile, the temperature that the utility model embodiment provides, thing position integrative detection instrument, can also assist the Real-Time Monitoring carrying out temperature.
The temperature provided the utility model embodiment below, the principle and characteristics of thing position integrative detection are described in detail;
One, speed positioning system for high
These product systems by microcomputer control sensor gravity and compare, and export control signal, perform definite value and weigh, control the running of external-feeding system, carry out the task of location and fast shut-off feed automatically, prevent object overflow container or expansion.
System adopts the electron device such as MCS-51 single-chip microcomputer and V/F Voltage-to-frequency Converter, its hardware circuit diagram as shown in Figure 1, with 8031 as central processing unit, BCD pulls out code-disc and sets input unit as definite value, material is contained in hopper, its gravity makes sensor elastomer deform, export the electric signal be directly proportional to gravity, sensor output signal is after amplifier amplifies, input V/F converter carries out A/D conversion, the frequency signal converted to is directly sent in 8031 microprocessors, and its digital quantity is processed by microcomputer.Microcomputer sends instantaneous for thing gravity digital quantity into display circuit on the one hand, demonstrates instantaneous thing weight, then carries out weighing comparing on the other hand, opens and closes charge door, blowing in the medium a series of positioning control of weighing of case.
Theory diagram as shown in Figure 1; In whole positioning control system, force snesor is the critical component affecting measuring accuracy, selects YZC-1B variant weighing and force-measuring transducer.Four sheet resistance foil gauges form full-bridge bridge road, when added bridge pressure U is constant, sensor output signal is pressed into direct ratio with the gravity acted on a sensor with for bridge bridge, and, change for bridge bridge pressure U directly affects the measuring accuracy of detector platform, so require that bridge pressure is very stable.The sensor of millivolt level exports after amplifying, and the voltage signal becoming 0-10V exports, and sends into V/F transducer and carries out A/D conversion, and the frequency signal that its output terminal exports is added on the counting of single-chip microcomputer 8031 timer 1, input end T1.Make counting and timing in microcomputer inside by timer 0, the timing of timer 0 is changed by the A/D required
Set about resolution;
The count value of timer 1 reflects the weight of measuring voltage size and material.While display, computing machine also carries out definite value judgement according to setting value and measured value.Measured value and set-point compare, and get difference and provide PID arithmetic, work as shortage in weight, then continue feeding and display measurement value.Once be equal in weight or be greater than set-point, control interface exports control signal, controls external-feeding equipment and stops feeding, display measurement final value, then sends and answers order, represent that this container loading terminates, when material drops to below detection instrument check weighing platform, system is to material signal of falling vacant, or alerting signal.
This product can detect temperature of charge in real time, with level transducer unitary design, and need not mounting temperature sensor in addition.
" boiler fuel breeze material position is example " is applied to other industry roughly the same as shown in Figure 2, and meeting particular/special requirement can otherwise designed.
Got in storage powder container by powder by fortune powder tank car, above the metrology that material arrives first detector (low material level) during 10mm, the weight that object measured by sensor sends signal, represents that material arrives desired location.
When material lower than under first detector metrology time sensor lose gravity send equally signal inform need beat powder.
When material arrives 10mm above second detector (middle material level) metrology, the weight that object measured by sensor sends passive signal, represents that material arrives desired location.
When material arrives 10mm above the 3rd detector (high charge level) metrology, the weight that object measured by sensor sends passive signal, or alerting signal, or directly stops feeding system, represents that material arrives desired location.
Note: each object position detection instrument has temperature sensor, the host computer uploaded by microprocessor or the temperature of various monitoring platform to material are monitored in real time.Temperature is a combination of the present utility model, and its technology illustrates synchronous with object position detection device, all not separated answer of following content.
As shown in Figure 2, Fig. 2 thing position temperature sounder can select different gravity sensors, temperature sensor to change scope of weighing, and temperature measurement range, then can use cement, sugar, flour processing, boiler, in the material detection of the industry such as water treatment, chemical industry.It should be noted that about operative scenario schematic diagram illustrated in Figure 2, namely the left side is temperature, thing position integrative detection instrument, its top is piled up the coal dust fallen from top, and when coal dust exceeds temperature, 10 millimeters, thing position integrative detection instrument, sending reports to the police washed forwards host computer or PLC to.
Two, the principle of object position detection device and structure.
Principle: utilize gravity sensor to design special, fixing weighing platform, according to the density of various media object, the height of container, Newton's law, calculate the pressure of object, again by pressure. the sectional area of weighing platform calculates the height of object on weighing platform and gravity, and its computing formula is: P=ρ GHF=P.S; Repeat no longer one by one about various Media density coefficient.
Multiple sensors inner structure schematic diagram see Fig. 3 a, 3b, 3c, 3d illustrate:
As shown in Figure 3 a, the structure of conventional LOAD CELLS is monotroded elliptical aperture elastic body, and on platform semi-girder end, two screws of plane are fastening;
As shown in Figure 3 b, for blossom type four connects hole elastic body, three screws of scale pan semi-girder end sides are firm, middle support rod pasted the foil gauge compensated.The sensor of this form, it is the most practical for weighing in fabrication position.
As shown in Figure 3 c, be three beam type elasticity of flexure bodies, sampling bending stress, counterweight quantitative response is responsive, should be used for making little gravity detection platform.
As shown in Figure 3 d, be three beam type shearing elasticity bodies, responsive shearing stress of beam in the middle of sampling, should be used for making hundreds of kilogram gravity detection instrument.
Sensor elastomer structure: support a weighing platform with these multiple beam type high-precision sensors, be weighed thing may be placed on again on the optional position of any weighting platform, the corner error of indication will inevitably be produced, to Fig. 3 a, the sensor of Fig. 3 b two kinds of versions, the form by rasion carries out angular difference correction.To Fig. 3 c, Fig. 3 d, the flexible floor stringer that it has upper and lower two local to weaken, is made sensor have very strong resistivity to side force, transverse force and torsional moment, can be adjusted sensitivity coefficient and the position error of sensor by the flexible position of rasion floor stringer.
As shown in Fig. 4-Fig. 9, Fig. 4-Fig. 9 respectively illustrates the structural drawing of thing position, each part of hygrosensor; Analyze known its of above-mentioned design of part and there is following annexation and tectonic relationship; Namely Fig. 4 a, Fig. 4 b illustrate the structure of weighing platform 1, and the structure that Fig. 5 a, Fig. 5 b illustrate the structure of base 16, Fig. 6 illustrates top 17, Fig. 7 illustrate the structure of interior extension rod 18, and Fig. 8 a, Fig. 8 b illustrate the structure of outer extension rod 20; By after above-mentioned structure assembly can formation position, temperature integrative detection instrument one-piece construction;
As shown in Figure 9, Fig. 9 is the circuit block diagram of object position detection device.What sensor adopted is that the blossom type four shown in Fig. 3 b connects pore structure, and this sensor has zero setting, zero-bit from functions such as motion tracking, automatic peeling, printouts, and 5 sections of red fluorescence numeral method, use very convenient.
For because temperature variation is to bridge joint zero point and output, the impact of sensitivity, even if adopt with a collection of foil gauge, also can because of between foil gauge slightly temperature characterisitic difference and cause error, so the sensor higher to precision prescribed, must carry out temperature compensation, the method for solution is the auto-compensation sheet adopting proper temperature coefficient on the substrate be stuck, and the compensation in addition suitable to it from outside.
Nonlinearity erron is the most important in sensor characteristic.The reason producing nonlinearity erron is a lot, is in general mainly determined by structural design, by linear compensation, also can improve.
Delayed and creep is the error about foil gauge and bonding agent.Because bonding agent is macromolecular material, its characteristic varies with temperature comparatively large, so LOAD CELLS must use in the temperature range of regulation.
Use sensor down in the open, also should consider the impact of the temperature impact that direct sunlight produces and blast.
In sum, the temperature that the utility model provides, thing position integrative detection instrument, can material in inspection instrument, and after the some that material reaches higher, stop molten device to feed action; Simultaneously material arrive cry a small amount of after control to send to lack and expect that signal or alerting signal carry out FEEDBACK CONTROL in real time.Meanwhile, the temperature that the utility model embodiment provides, thing position integrative detection instrument, can also assist the Real-Time Monitoring carrying out temperature, and it has all many-sided technical advantages and technique effect.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (5)
1. a temperature, thing position integrative detection instrument, it is characterized in that, comprise weighing platform, control mainboard, display screen and the LOAD CELLS, amplifier, converter and the single-chip microcomputer that are integrated on described control mainboard and temperature sensor, wherein: described LOAD CELLS, described amplifier, described converter and described single-chip microcomputer, described temperature sensor are electrically connected successively;
Described weighing platform comprises sensor elastomer and is positioned at the LOAD CELLS bottom it; For hopper and the material that is contained in hopper on described sensor elastomer.
2. temperature, thing position integrative detection instrument as claimed in claim 1, is characterized in that,
Described LOAD CELLS is YZC-1B variant weighing and force-measuring transducer.
3. temperature, thing position integrative detection instrument as claimed in claim 1, is characterized in that,
Described converter is V/F Voltage-to-frequency Converter.
4. temperature, thing position integrative detection instrument as claimed in claim 1, is characterized in that,
Described single-chip microcomputer is 8031 single-chip microcomputers in MCS-51 series monolithic.
5. temperature, thing position integrative detection instrument as claimed in claim 1, is characterized in that,
Described temperature, thing position integrative detection instrument also comprise key board unit, memory circuit arrangement and printing equipment; Described single-chip microcomputer is electrically connected with described key board unit, described memory circuit arrangement and printing equipment respectively.
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| CN105091950A (en) * | 2015-09-22 | 2015-11-25 | 巫占海 | Integrated detector for temperature and object position |
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| CN105091950A (en) * | 2015-09-22 | 2015-11-25 | 巫占海 | Integrated detector for temperature and object position |
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