CN201126382Y - Temperature measurement circuit and temperature measurement piece using the same - Google Patents
Temperature measurement circuit and temperature measurement piece using the same Download PDFInfo
- Publication number
- CN201126382Y CN201126382Y CNU2007201908404U CN200720190840U CN201126382Y CN 201126382 Y CN201126382 Y CN 201126382Y CN U2007201908404 U CNU2007201908404 U CN U2007201908404U CN 200720190840 U CN200720190840 U CN 200720190840U CN 201126382 Y CN201126382 Y CN 201126382Y
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- China
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- battery
- common electrode
- temperature measurement
- thermometric
- control circuit
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Abstract
The utility model provides a temperature measuring circuit comprising a control circuit and battery wherein the control circuit is composed of a temperature sensor, a MCU chip, a pair of common electrodes, a resistance, a schottky tube and a LED indicator light and the ouput end of the MCU chip is connected with the anode of the common electrode and forward connected with the anode of the battery by the resistance and schottky tube. The temperature measuring chip of the circuit is used and the casing is a flat metallic channel provided with a metal top cover, a insulator at the medial side, a display window of the LED indicator light at the side surface of the casing and the common electrode is ground mounted on the temperature measuring control circuit board and butted with the casing. The anode of the common electrode is fixed on the anode of the battery to but with the metal top cover. The features of the utility model are: triad of communication, detection displaying and battery charging by using the secondary battery, ultrathin casing and common electrode; simple structure, convenient detection, long life, repeatability, being applied to continuously monitor the temperature of the movable light piece.
Description
Technical field
The utility model relates to temperature measuring equipment, the thermometric sheet of particularly a kind of temperature measurement circuit and this circuit of employing.
Background technology
At present, the removable temperature-detecting device that the home market exists, most of volume and weight is bigger, and cost is higher, and complicated operation is not suitable for the temperature of smallclothes mobile object is carried out continuous monitoring.External existing similar products come out, but the cost height, reusable is not readable midway, and therefore, operation is very inconvenient in the temperature monitoring of smallclothes mobile object.
According to China's national situation, at first to solve the disposable use problem of chip, make that chip can be multiplexing, reduce handling cost, reduce electronic waste.In addition, must solve the drawback of the computer reading of data of passing through, the user is not being had under the computer situation, also can make things convenient at any time and understand monitored object temperature record case.At the bigger shortcoming of existing removable temperature-detecting device volume and weight, also to solve the ultra-thin integration problem of electronic devices and components.
The utility model content
The purpose of this utility model is to overcome above-mentioned defective, and a kind of temperature measurement circuit simple in structure, easy to detect is provided.
For achieving the above object, the temperature measurement circuit that the utility model provides, comprise control circuit and battery, described control circuit comprises temperature sensor, MCU chip, a pair of common electrode, resistance, schottky pipe and LED light, described battery, temperature sensor and LED light link to each other with described MCU chip respectively, the output terminal of described MCU chip links to each other with the positive pole of described common electrode, and this end is connected to the positive pole of described battery by described resistance and described schottky pipe forward.
The utility model temperature measurement circuit, the signal of communication of wherein said MCU chip output has the pulsewidth of Millisecond, and the indicator signal of described MCU chip output has the pulsewidth of hundred Milliseconds.
The utility model temperature measurement circuit, wherein said LED light are bi-colour LED, and red as the detected temperatures indication that goes beyond the scope, green is normally indicated as detected temperatures.
The utility model temperature measurement circuit, wherein said MCU chip adopt model to be the chip of MSP 4270 and to be connected to the RS232 output interface.
The utility model temperature measurement circuit, wherein said battery are rechargeable battery.
The purpose of this utility model is to overcome above-mentioned defective, and the thermometric sheet that a kind of simple in structure, easy to detect, life-span is long and can use repeatedly is provided simultaneously.
For achieving the above object, the thermometric sheet of the above-mentioned temperature measurement circuit of employing that the utility model provides, comprise housing and built-in thermometric control circuit board, described housing is a flat metallic channel, is provided with metal top cover, and described metal top cover inboard is provided with insulator, temperature measurement circuit and battery are installed on the described thermometric control circuit board, described housing side is provided with the display window of LED light, and described common electrode earthing pole is installed on the described thermometric control circuit board, and offsets with described housing; The positive pole of described common electrode is fixed on the positive pole of battery, and offsets with described metal top cover.
The utility model thermometric sheet, wherein said housing are a monetary apparatus packaging body, and size is Φ 35mm-Φ 20mm, and thickness is 3mm-5mm.
The utility model thermometric sheet, wherein said common electrode adopt elastic copper sheet to make.
The thermometric sheet beneficial technical effects of the utility model temperature measurement circuit and this circuit of employing is: owing to adopt rechargeable battery, ultra-thin monetary apparatus packaging body, common electrode has been realized the problem that prolongs the life-span of thermometric chip and use repeatedly, adopt communication, detect indication, the design that battery charge is three-in-one and in the coin side with miniature LED indicating status, it is simple in structure, easy to detect, solved the problem that the thermometric sheet reads in the storage transportation midway, be applicable to the removable temperature continuous monitoring of smallclothes, pick-up unit volume and weight ratio are less, especially are fit to be applied to food, medicine, blood product, biological products etc. need carry out the field of mobile temperature quality monitoring.
The utility model is elaborated with reference to accompanying drawing below in conjunction with embodiment.
Description of drawings
Fig. 1 is the structural drawing of the utility model thermometric sheet;
Fig. 2 is the A-A cutaway view Amplified image of Fig. 1;
Fig. 3 is the circuit diagram of the utility model temperature measurement circuit.
Embodiment
See figures.1.and.2, the utility model thermometric sheet comprises housing 1, built-in thermometric control circuit board 7, battery 4, LED light 6.
In the embodiment of the utility model thermometric sheet, housing 1 is the segment of monetary apparatus encapsulation, and size is Φ 35mm-Φ 20mm, and thickness is 3mm-5mm.Housing 1 is a flat metallic channel, be provided with metal top cover 2, metal top cover 2 inboards are provided with insulator 3, and temperature sensor, MCU chip, a pair of common electrode 5,8, resistance R 8, schottky pipe and LED light 6 that electricity links to each other are installed on the thermometric control circuit board 7.Battery 4 is a rechargeable battery.Common electrode adopts elastic copper sheet to make.Common electrode earthing pole 8 is installed on the thermometric control circuit board 7, and offsets with housing 1; The positive pole 5 of common electrode is fixed on the positive pole of battery 4, and offsets with metal top cover 2.Housing 1 side is provided with the display window 9 of LED light 6.LED light 6 is a bi-colour LED, and red as the detected temperatures indication that goes beyond the scope, green is normally indicated as detected temperatures.
With reference to Fig. 3, the MCU chip adopts low-cost high power capacity super low-power consumption MCU, and the model of chip is MSP 4270, cooperates the high-precision low-power consumption temperature sensor, can reach the temperature of long-time, high Precision Detection and record testee.The output terminal of MCU chip links to each other with the positive pole of common electrode, and this end is connected to the positive pole (the port interface among Fig. 4, interface 1 is an anode 5, interface 2 is a public land 8) of battery 4 by resistance R 8 and schottky pipe D1 forward.The MCU chip is connected to the RS232 output interface.
A pair of common electrode constitutes two faces of thermometric sheet, has realized communication, has detected the three-in-one effect of indicating, charge.One is crossed when low when cell voltage, and the user can be used as charging inlet.Its two, when needs by computer interface with the thermometric sheet in data read, when carrying out further data analysis, the user can be used as communication interface.In carrying out communication process, when not having communication signal to produce, this PORT COM has the 3.3V noble potential, by resistance R 8 and schottky pipe D1 battery 4 is charged.Certainly, charging also, the available dedicated charger charges.They are three years old, the user can be used as and detect the indication interface in observation process, and the user is pressed from both sides the upper and lower cover plate 2,3 of thermometric sheet both sides with the metal tweezers, and observes the LED light 6 of thermometric sheet side, if red expression detected temperatures goes beyond the scope, if green expression detected temperatures is normal.Because housing 1 has adopted the printing opacity design of side, after receiving detection signal, the miniature LED that is installed in housing 1 side is just lighted, and the user can be from the clear measurement situation of understanding monitored object temperature of display window.
Here, the isolation scheme of charge function and communication, detection deixis, we are the unidirectional on state characteristics of low positive pressure drop that adopt the schottky pipe, realize the mutual isolation of charge function and communication, detection indication, function; Detecting the mutual differentiation of indication and communication function, is to adopt pulsewidth identification scheme, i.e. communication pulsewidth only is several milliseconds, indicates more than the hundreds of millisecond and detect.That is to say that the signal of communication of MCU chip output has the pulsewidth of Millisecond, the indicator signal of output has the pulsewidth of hundred Milliseconds.
The following describes the work and the use of the utility model thermometric sheet.
During use, at first the thermometric sheet is put into communication folder, by the computer settings parameter: comprise ID number, alarm threshold up and down, start-up time, detection time etc.Then the thermometric sheet is closely contacted the beginning thermometric with testee.The user uses metal tweezers folder thermometric sheet both sides, and sees LED light, if red expression detected temperatures goes beyond the scope, green expression detected temperatures is normal.After finishing thermometric, can data in the thermometric sheet be read, carry out further data analysis by computer interface.Carrying out in the process of communication, also carry out the charging of battery simultaneously with the communication folder.
The utility model thermometric sheet can be applied in the mobile thermometric of various needs, testee needs long-term continuous temperature monitoring, the occasion that does not have external power supply, be particularly useful for the cold chain control of the storage transportation of food, medicine, vaccine, blood product, the chip size that 3mm is ultra-thin, chip can be made things convenient for be fixed on closely on the testee, use convenient.
Claims (9)
1. temperature measurement circuit, comprise control circuit and battery (4), it is characterized in that, described control circuit comprises that temperature sensor (9), MCU chip, a pair of common electrode (5,8), resistance (R8), schottky manage (D1) and LED light (6), described battery (4), temperature sensor and LED light (6) link to each other with described MCU chip respectively, the output terminal of described MCU chip links to each other with the positive pole of described common electrode (5), and this end is connected to the positive pole of described battery (4) by described resistance (R8) and described schottky pipe (D1) forward.
2. temperature measurement circuit according to claim 1 is characterized in that, the signal of communication of wherein said MCU chip output has the pulsewidth of Millisecond, and the indicator signal of described MCU chip output has the pulsewidth of hundred Milliseconds.
3. temperature measurement circuit according to claim 2 is characterized in that, wherein said LED light (6) is a bi-colour LED, and red as the detected temperatures indication that goes beyond the scope, green is normally indicated as detected temperatures.
4. temperature measurement circuit according to claim 3 is characterized in that, wherein said MCU chip adopts model to be the chip of MSP4270 and to be connected to the RS232 output interface.
5. temperature measurement circuit according to claim 4 is characterized in that, wherein said battery (4) is a rechargeable battery.
6. thermometric sheet that adopts any described temperature measurement circuit in the claim 1 to 5, comprise housing (1) and built-in thermometric control circuit board (7), it is characterized in that, described housing (1) is a flat metallic channel, be provided with metal top cover (2), described metal top cover (2) inboard is provided with insulator (3), temperature measurement circuit and battery (4) are installed on the described thermometric control circuit board (7), described housing (1) side is provided with the display window (9) of LED light (6), described common electrode earthing pole (8) is installed on the described thermometric control circuit board (7), and offsets with described housing (1); The positive pole of described common electrode (5) is fixed on the positive pole of battery (4), and offsets with described metal top cover (2).
7. thermometric sheet according to claim 6 is characterized in that, wherein said housing (1) is a monetary apparatus packaging body, and size is Φ 20mm-Φ 35mm, and thickness is 3mm-5mm.
8. thermometric sheet according to claim 6 is characterized in that, wherein said common electrode (5,8) adopts elastic copper sheet to make.
9. thermometric sheet according to claim 7 is characterized in that, wherein said common electrode (5,8) adopts elastic copper sheet to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201908404U CN201126382Y (en) | 2007-12-17 | 2007-12-17 | Temperature measurement circuit and temperature measurement piece using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201908404U CN201126382Y (en) | 2007-12-17 | 2007-12-17 | Temperature measurement circuit and temperature measurement piece using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201126382Y true CN201126382Y (en) | 2008-10-01 |
Family
ID=39999850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201908404U Expired - Fee Related CN201126382Y (en) | 2007-12-17 | 2007-12-17 | Temperature measurement circuit and temperature measurement piece using the same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201126382Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947159A (en) * | 2019-04-23 | 2019-06-28 | 河南新飞电子技术有限公司 | Cold chain temperature and humidity control system |
-
2007
- 2007-12-17 CN CNU2007201908404U patent/CN201126382Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109947159A (en) * | 2019-04-23 | 2019-06-28 | 河南新飞电子技术有限公司 | Cold chain temperature and humidity control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081001 Termination date: 20101217 |