CN201964979U - Construction temperature monitoring alarm - Google Patents
Construction temperature monitoring alarm Download PDFInfo
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- CN201964979U CN201964979U CN2010206312502U CN201020631250U CN201964979U CN 201964979 U CN201964979 U CN 201964979U CN 2010206312502 U CN2010206312502 U CN 2010206312502U CN 201020631250 U CN201020631250 U CN 201020631250U CN 201964979 U CN201964979 U CN 201964979U
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Abstract
A construction temperature monitoring alarm is capable of measuring site-operation temperature and giving an alarm for over-temperature with regard to the inside temperature of concrete in construction sites of various construction works. The construction temperature monitoring alarm consists of a 2-volt range direct current digital voltmeter, a plurality of LM35CZ integrated temperature sensors, an LM339 voltage comparator, electronic switches and an audible and visual alarm. The LM35CZ sensors are utilized for temperature acquisition, the LM339 voltage comparator is utilized as an alarm controller, and the direct current digital voltmeter is utilized as a thermometer for reading temperature values. The integrated temperature sensors are embedded inside a component, the input end of a digital thermometer is connected in parallel with a group of non-inverting inputs and another group of inverting inputs of the LM339 voltage comparator and then is connected to the output end of the LM35CZ temperature sensor, and a group of inverting inputs and another group of non-inverting inputs of the LM339 voltage comparator are respectively connected to a regulated power supply with an adjustable reference voltage. Two groups of the output ends of the voltage comparator are connected to two electronic switches, and after parallel connection the electronic switches are connected to the audible and visual alarm. By the adoption of the temperature sensors randomly distributed inside the concrete, the construction temperature monitoring alarm can duly measure the inside temperature of mass concrete, waterproof impervious concrete, winder construction concrete and mortar mixture, and meanwhile can set high and low temperature alarm values in advance and realize the remote monitoring for the inside temperature of the construction works.
Description
Technical field
The utility model relates to a kind of temperature monitoring alarm that can carry out site operation measurement and overtemperature alarm to mass concrete, winter construction concrete, the concrete internal temperature of waterproof, seepage control at all kinds of construction works scene, cooperates the temperature of gas, liquid, fluid, mixture and the granular material that can also measure in the construction with sensor.This building temperature monitoring alarm can carry out in good time temperature survey to concrete, mortar mixture inside by the semiconductor integrated temperature sensor of layouting arbitrarily in concrete, simultaneously can on alarm, preestablish high low-temperature warning numerical value, realize the internal temperature of remote monitoring construction object, when the internal temperature of construction object surpasses setting value, automatically send sound and light alarm, remind the workmen to take technical measures to guarantee construction quality.
Background technology
At present, the temperature survey of building operation has the temperature measuring set of dual mode, and a kind of is to be made of microcomputer, temperature probe, thermometric line, data line, test analysis software, and temperature probe is connected with main frame respectively by plug with the thermometric line.The temperature value that collects is transferred to computer carries out data processing.This kind temp measuring system complex structure, the cost height, the long-distance transmissions data need specific installation and data line, and need the professional to operate.Another kind is to adopt portable temperature instrument, cooperate special wire and temperature sensing element to constitute temp measuring system, the working-yard temperature is measured, and this kind instrument temperature sensor and transfer wire are not easy to the long-distance transmissions data, can not realize the remote monitoring warning.
Summary of the invention
In order to overcome existing building thermometric instruments complex structure, the price height, be not easy to the deficiency that remote monitoring xoncrete structure internal temperature and overshoot temperature alarming are reminded, the utility model provides a kind of building temperature monitoring alarm, this monitoring alarm not only can carry out site operation to the mass concrete in the building operation, winter construction concrete, the concrete internal temperature of waterproof, seepage control and measure, and can set overtemperature alarm numerical value according to the job specifications management expectancy, guarantee construction quality and construction safety.
The technical scheme that its technical matters that solves the utility model adopts is: 2 volts of range dc digital voltmeters, many LM35CZ integrated temperature sensors, double core shielding cable, LM339 voltage comparator, electronic switch, audible-visual annunciator, D.C. regulated power supply are set, adjustable voltage stabilizing reference power source in building temperature monitoring alarm.Utilize the sensor of LM35DZ as temperature acquisition, the LM339 voltage comparator is as alarm controller, and 2 volts of range dc digital voltmeters are as the thermometer that reads Temperature numerical.Utilize LM339 four voltage comparators as kernel control chip, the LM35DZ integrated temperature sensor is embedded in the construction concrete, the LM339 voltage comparator wherein is connected with LM35CZ temperature sensor output terminal after one group of in-phase input end and another group reverse input end parallel connection, organizes in-phase input end at one group of reverse input end of LM339 and another and inserts adjustable DC voltage-stabilizing reference voltage respectively.The output terminal of two groups of voltage comparators connects two electronic switches, is connected with audible-visual annunciator after the electronic switch parallel connection.
The course of work of building temperature monitoring alarm is: the precision and the linear measuring accuracy that directly influences the digital display thermometric instrument that are installed in the component inside temperature sensor, this temperature monitoring alarm adopts semiconductor integrated temperature sensor LM35CZ, serviceability temperature-40～110 ℃, output voltage and Celsius temperature are better linear, very low output impedance is arranged, be applicable to the directly remote voltage signal that transmits, the linearity measuring range coefficient is 10mv/ ℃, 2 volts of dc digital voltmeters of adapted can directly be monitored the Temperature numerical of component inside, can preestablish high temperature and low-temperature warning numerical value simultaneously.High temperature alarm: when the temperature in the monitored member is lower than design temperature, the temperature sensor output voltage is less than the reference voltage of first group of voltage comparator, the output terminal output low level, first group of electronic switch ends, alarm is not worked, when the temperature in the member because environment temperature and other are former thereby when being higher than design temperature, the temperature sensor output voltage is greater than the reference voltage of first group of voltage comparator, output terminal output high level, the electronic switch conducting, alarm work sends sound and light alarm, remind the workmen to take measures, guarantee construction quality; Low-temperature warning: during winter construction, when the temperature in the member was higher than design temperature, the temperature sensor output voltage was greater than the reference voltage of second group of voltage comparator, the output terminal output low level, and electronic switch ends, and alarm is not worked.When the temperature in the monitored member was lower than design temperature, the temperature sensor output voltage was less than the reference voltage of second group of voltage comparator, and output terminal is exported high level, electronics is convinced by patient analysis logical, and alarm work sends sound and light alarm, remind the workmen to take measures, guarantee construction quality.
The beneficial effects of the utility model are, can carry out timely monitor to the mass concrete in building operation and the maintenance, winter construction concrete, waterproof, seepage control Concrete Construction and curing temperature, preestablish temperature alarming numerical value, can carry out remote monitoring, prevent that the overshoot temperature is freezing with appearance in construction and the maintenance, guarantee construction quality.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified
Fig. 1 is circuit theory diagrams of the present utility model
Fig. 2 is a sectional structural map of the present utility model
Fig. 3 is that Fig. 2 removes 1 A to vertical view
CZ1. external power supply jack among Fig. 1, CZ2. temperature probe socket, C1.220uf/16V, C2～C5.47uf/16V, C8, C9.470uf/16V, C6, C7.0.1uf/100V, D1.1N4007, IC1.7805, IC2.LM339, IC3.NE555, the K1. power switch, K2. sets switch, LED1. light emitting diode, R1.200 Ω, R2.5.1K, R3.510 Ω, R4.1K, R5, R6.10K, R7, R8.5.1K, SP. interrogates Chinese percussion instrument, T1, T2.9013, T3. temperature sensor, W1, W2.50K.V. digital multimeter.
Dustproof nut, 2. housing, 3. battery, 4. alarm lamp of 1. housings among Fig. 2,5. the news of reporting to the police Chinese percussion instrument, 6. circuit board, 7. sensor connection electrode, 8. alarm hold-doun nut, 9. insulated enclosure pad, 10. sensor built-in fitting, 11. sensor cables, 12. temperature sensors.
13. temperature measurement electrode jacks among Fig. 3,14. battery covers, 15. alarm temperature setting knobs, 16. power switches, 17. temperature surveys and alarm temperature are set switch.
Embodiment
In Fig. 1, building temperature monitoring alarm by: digital multimeter, monitoring alarm are formed, monitoring alarm by: power circuit, temperature sampling circuit, voltage comparator, electronic switch, warning circuit are formed.
In Fig. 1, by (CZ1), (E), (IC1), (C1), form DC-stabilized circuit, for monitoring alarm provides D.C. regulated power supply.
In Fig. 1: (T3), (CZ2), (C4) form temperature sampling circuit, when the temperature variation in the member, the output terminal of integrated temperature sensor (T3) is as the input signal of voltage comparator (IC2) 4 pin and 7 pin.
In Fig. 1: (IC2), (D1), (R1), (W1), (W2), (C3), (C5), form voltage comparator, wherein (D1), (R1), (W1), (W2), provide adjustable stable reference voltage by 5 pin and the input of 6 pin for (IC2), (IC2) 4 pin are in parallel with 7 pin to be connected by setting switch (K2) with the output terminal of temperature sensor (T3) and the positive pole of digital multimeter, and (IC2) 1 pin, 2 pin connect electronic switching circuit respectively.
(R7), (R8), (C6), (C7), (C9), (C10), (T1), (T2), two electronic switching circuits of composition in Fig. 1.
In Fig. 1 (IC3), (R2～R4), (LED1), (SP) form warning circuit.
In the embodiment shown in fig. 1, work is to be connected digital multimeter (V) 2 volts grades of temperature of directly reading the building element of direct current from multimeter with (CZ2) by the temperature sensor (T3) that is embedded in the building element with overtemperature alarm in the temperature survey of building temperature monitoring alarm, provides the sampling input signal for alarm simultaneously.Temperature sensor (T3) output voltage and Celsius temperature are better linear, and very low output impedance is arranged, and are applicable to the directly remote voltage signal that transmits.
Temperature monitoring alarm work process is:
High temperature alarm, when temperature was higher than design temperature in the building element, temperature sensor (T3) output voltage raise, (IC2) input voltage of 4 pin is greater than the reference voltage of (IC2) 5 pin, and comparer overturns, (IC2) 2 pin output high level, (T1) conducting, alarm work sends sound and light alarm.At this moment, 7 pin input voltages (IC2) are greater than the reference voltage of (IC2) 6 pin, and (IC2) 1 pin output low level (T2) is ended.
Low-temperature warning, when temperature was lower than design temperature in the member, (IC2) 7 pin input voltages that temperature sensor (T3) output terminal connects were less than the reference voltage of 6 pin, and (IC2) 1 pin is exported high level, (T2) conducting, alarm work sends sound and light alarm.At this moment, 4 pin input voltages (IC2) are less than the reference voltage of (IC2) 5 pin, and (IC2) 2 pin output low levels (T1) are ended.
Claims (1)
1. temperature monitoring alarm that can carry out site operation temperature survey monitoring and overtemperature alarm to the internal temperature of all kinds of building engineering construction on-site concretes, 2 volts of range dc digital voltmeters are set in monitoring alarm, the LM35CZ integrated temperature sensor, the LM339 voltage comparator, adjustable voltage stabilizing reference power source, electronic switch, audible-visual annunciator, it is characterized in that: utilize LM339 four voltage comparators as kernel control chip, the LM35DZ integrated temperature sensor is embedded in the construction concrete, the LM339 voltage comparator wherein is connected with LM35CZ temperature sensor output terminal after one group of in-phase input end and another group reverse input end parallel connection, organizes in-phase input end at one group of reverse input end of LM339 and another and inserts adjustable DC voltage-stabilizing reference voltage respectively.The output terminal of two groups of voltage comparators connects two electronic switches, is connected with audible-visual annunciator after the electronic switch parallel connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206312502U CN201964979U (en) | 2010-11-23 | 2010-11-23 | Construction temperature monitoring alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206312502U CN201964979U (en) | 2010-11-23 | 2010-11-23 | Construction temperature monitoring alarm |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201964979U true CN201964979U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206312502U Expired - Fee Related CN201964979U (en) | 2010-11-23 | 2010-11-23 | Construction temperature monitoring alarm |
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| Country | Link |
|---|---|
| CN (1) | CN201964979U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632639A (en) * | 2017-09-14 | 2018-01-26 | 中国水利水电科学研究院 | The method and device of temperature index dynamic regulation |
-
2010
- 2010-11-23 CN CN2010206312502U patent/CN201964979U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107632639A (en) * | 2017-09-14 | 2018-01-26 | 中国水利水电科学研究院 | The method and device of temperature index dynamic regulation |
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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: 20110907 Termination date: 20111123 |