CN204405202U

CN204405202U - Water temperature gathers display controller

Info

Publication number: CN204405202U
Application number: CN201520032374.1U
Authority: CN
Inventors: 朱晶波; 王敬艳
Original assignee: Changchun Vocational Institute of Technology
Current assignee: Changchun Vocational Institute of Technology
Priority date: 2015-01-19
Filing date: 2015-01-19
Publication date: 2015-06-17
Anticipated expiration: 2025-01-19

Abstract

The utility model relates to a kind of water temperature and gathers display controller, it is characterized in that: power circuit is made up of rectification, filtering, mu balanced circuit; V1 is alternating current, by the 12V direct current V2 obtained after rectification, can after three terminal regulator 7805 U3 the 5V DC voltage of stable output, and the switching of alternating current 220V and direct current 12V is realized by switch J1,5V DC voltage is connected with the temperature sensor 18B20 in temperature collection circuit, is communicated with simultaneously and powers with display control circuit; Its control simple, temperature measurement accuracy is high, can carry out Real-Time Monitoring and alarm, can exchange, direct supply is dual-purpose, its cost is low, energy-conservation, the waste that reduces resource.

Description

Water temperature gathers display controller

Technical field

The utility model relates to a kind of water temperature and gathers display controller, particularly relates to vehicle water temp and gathers display controller, is the vehicle water temp collection display device based on single-chip microcomputer 80S52.

Background technology

Water temperature is a kind of common controlled temperature parameter, is always the emphasis of research both at home and abroad, uses extensively in fields such as electric heater, boiler, household electrical appliance.China starts the research of temperature detection-control technology in the 1980s, China engineering technical personnel are on the basis absorbing developed country's temperature detection-control technology, just grasp Control Technique of Microcomputer in temperature chamber, this technology is only limitted to the control of the item environment factor to temperature, technically compared with developed countries, there is larger gap.China's Temperature Measure Control present situation is far from the degree reaching batch production, and there is matching equipment ability aborning, industrialization level is low, and environment controlling level falls behind, and software and hardware resources can not be shared and the problem such as poor reliability; The current design to water temperature control system is too complicated, cost is higher, is not easy to promote the use of.

Summary of the invention

The purpose of this utility model is to provide a kind of water temperature to gather display controller, its control simple, temperature measurement accuracy is high, can carry out Real-Time Monitoring and alarm, can exchange, direct supply is dual-purpose, its cost is low, energy-conservation, the waste that reduces resource.

The technical solution of the utility model is achieved in that a kind of water temperature gathers display controller, comprises power circuit, digital display circuit, temperature collection circuit, it is characterized in that: power circuit is made up of rectification, filtering, mu balanced circuit; V1 is alternating current, by the 12V direct current V2 obtained after rectification, can after three terminal regulator 7805 U3 the 5V DC voltage of stable output, and the switching of alternating current 220V and direct current 12V is realized by switch J1,5V DC voltage is connected with the temperature sensor 18B20 in temperature collection circuit, is communicated with simultaneously and powers with display control circuit; Wherein in temperature collection circuit, the pin 1 of temperature sensor 18B20 is directly connected with 5V positive source, pin 2 to be connected with 10K Ω output terminal VO by power supply, VO is connected with the pin 13 of 8052 single-chip microcomputer U1 in digital display circuit, and pin 3 is connected with power cathode; Digital display circuit is single-chip microcomputer 8052 by U1, U2 is LCDs 1602LCD, the 5V direct supply that three terminal regulator 7805 U3 exports is respectively that U1 is single-chip microcomputer 8052, U2 is LCDs 1602LCD and triode Q1, Q2 power, and in succession switch J2A, J2B, J2C, J2D.

Described 5V direct supply VCC positive pole is directly connected with the output head anode of three terminal regulator U3,5V direct supply VCC positive pole is connected with the pin 1 of temperature sensor 18B20, and is connected with the VCC pin of U2 LCDs 1602LCD with 40 pins of U1 single-chip microcomputer 8052; The negative pole of direct supply 12V is connected with the ground wire of three terminal regulator U3,5V direct supply power supply VCC negative pole is connected with the pin 3 of temperature sensor 18B20, ground wire is connected with the ground wire of three terminal regulator U3, and 20 pins of U1 single-chip microcomputer 8052 are all connected with the negative pole of 5V direct supply with the GND pin of U2 LCDs 1602LCD.

Crystal oscillator X1 is connected with between the pin 18 of described U1 single-chip microcomputer 8052 and pin 19, pin 17 is connected with resistance R5 one end, pin 16 is connected with resistance R2 one end, pin 9 and resistance R4, electric capacity C3 connects, pin 5, 6, 7, 8 link together is connected with switch, pin 39 is connected with the pin D0 of LCDs 1602LCD U2, pin 38 is connected with the pin D1 of liquid crystal display 1602LCD U2, pin 37 is connected with the pin D2 of LCDs 1602LCD U2, pin 36 is connected with the pin D3 of LCDs 1602LCD U2, pin 35 is connected with the pin D4 of LCDs 1602LCD U2, pin 34 is connected with the pin D5 of LCDs 1602LCD U2, pin 33 is connected with the pin D6 of LCDs 1602LCD U2, pin 32 is connected with the pin D7 of LCDs 1602LCD U2, pin 23 is connected with the pin E of LCDs 1602LCD U2, pin 22 is connected with the pin RS of LCDs 1602LCD U2, pin 21 is connected with the pin RW of LCDs 1602LCD U2, pin 13 is that output terminal V0 is connected with temperature sensor 18B20 output terminal pin 2.

The pin CV of described liquid crystal display 1602LCD U2 is connected with ground wire by resistance R1.

Good effect of the present utility model is automatically measured temperature by temperature sensor DS18B20, and then Temperature numerical is by 1602 LCDs displays.If the real time temperature of screen display is in upper and lower limit temperature range, then power light and output indicator normal luminous; If real time temperature exceedes ceiling temperature TH or lower than lower limit temperature TL, outside power light and output indicator normal luminous, the buzzer warning of water temperature regulater, light emitting diode alarm lamp flicker is simultaneously reported to the police, and can play dual-alarm reminding effect; In buzzer warning process, if press buzzing key, then can cancel buzzing alarming prompt sound, alarm lamp synchronously stops flash for prompting, but LCDs there will be flicker buzzing picture prompting driver, and water temperature is reported to the police; LCD backlight is controlled, under night vision working environment, uses the work of night vision key, clearly can observe water temperature display situation, work at night unaffected; Close LCD backlight daytime and reduce power consumption.The automatic measuring tempeature scope of this device is between 0 ° of C---120 ° of C; This system adopts DS18B20 digital sensor, and with the collection of chip microcontroller real time temperature data, precision is higher, through experimental verification, can meet actual needs.This device, except can being applied to vehicle water temp and detecting, can also be applied to the place that grain depot, freezer, warehouse, green house of vegetables, household electrical appliance etc. need monitoring temperature.

Accompanying drawing explanation

Fig. 1 is that vehicle water temp gathers display controller power circuit.

Fig. 2 is that vehicle water temp gathers display controller water temperature acquisition system circuit.

Fig. 3 is that vehicle water temp gathers display controller digital display circuit.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described: a kind of water temperature gathers display controller, comprises power circuit, digital display circuit, temperature collection circuit, it is characterized in that: power circuit is made up of rectification, filtering, mu balanced circuit; V1 is alternating current, by the 12V direct current V2 obtained after rectification, can after three terminal regulator 7805 U3 the 5V DC voltage of stable output, and the switching of alternating current 220V and direct current 12V is realized by switch J1,5V DC voltage is connected with the temperature sensor 18B20 in temperature collection circuit, is communicated with simultaneously and powers with display control circuit; Wherein in temperature collection circuit, the pin 1 of temperature sensor 18B20 is directly connected with 5V positive source, pin 2 to be connected with 10K Ω output terminal VO by power supply, VO is connected with the pin 13 of 8052 single-chip microcomputer U1 in digital display circuit, and pin 3 is connected with power cathode; Digital display circuit is single-chip microcomputer 8052 by U1, U2 is LCDs 1602LCD, the 5V direct supply that three terminal regulator 7805 U3 exports is respectively that U1 is single-chip microcomputer 8052, U2 is LCDs 1602LCD and triode Q1, Q2 power, and in succession switch J2A, J2B, J2C, J2D.

Described 5V direct supply VCC positive pole is directly connected with the output head anode of three terminal regulator U3,5V direct supply VCC positive pole is connected with the pin 1 of temperature sensor 18B20, and is connected with the VCC pin of U2 LCDs 1602LCD with 40 pins of U1 single-chip microcomputer 8052; The negative pole of direct supply 12V is connected with the ground wire of three terminal regulator U3,5V direct supply power supply VCC negative pole is connected with the pin 3 of temperature sensor 18B20, ground wire is connected with the ground wire of three terminal regulator U3, and 20 pins of U1 single-chip microcomputer 8052 are all connected with the negative pole of 5V direct supply with the GND pin of U2 liquid crystal display 1602LCD.

As shown in Figure 1, vehicle water temp gathers the power circuit of display controller, is made up of rectification, filtering, mu balanced circuit; V1 is alternating current, and effective value is 220V, V2 is the 12V direct current of alternating current by obtaining after rectification, and U3 is three terminal regulator 7805, the direct current 5V voltage of stable output; The switching of alternating current 220V and direct current 12V is realized by switch J1, the conversion of alternating current and powered by direct current can be realized, vehicle water temp detects and uses 12V direct current, if expansive approach grain depot, freezer, warehouse, green house of vegetables, household electrical appliance etc. need the place of monitoring temperature, can use and be switched to 220V alternating current; 5V DC voltage is powered, simultaneously for the display control circuit shown in Fig. 3 is powered for the temperature sensor 18B20 of the water temperature Acquisition Circuit shown in Fig. 2.

Fig. 2 is the temperature collection circuit that vehicle water temp gathers display controller, serviceability temperature sensor 18B20, in use pin 1 is directly connected with 5V positive source, pin 2 to be connected with 10K Ω output terminal VO by power supply, in VO and Fig. 3, the pin 13 of 8052 single-chip microcomputer U1 is connected, and pin 3 is connected with power cathode.

Fig. 3 is that vehicle water temp gathers display controller digital display circuit, U1 is single-chip microcomputer 8052, U2 is LCDs 1602LCD, the 5V direct supply that the U3 three terminal regulator 7805 of Fig. 1 exports is the two power supply, also power for triode Q1, Q2 simultaneously, after energising, by switch J2A, J2B, J2C, J2D practical function key and add a key, subtract a key, the cooperation of buzzing key, predetermined vehicle water temp display controller work upper and lower limit temperature, then observes temperature relation and the warning instruction situation of real time temperature and bound;

LCD backlight is controlled, under night vision working environment, uses the work of night vision key, clearly can observe water temperature display situation, work at night unaffected; Close LCD backlight daytime and reduce power consumption.

First power supply is selected, manually the toggle switch Switching power kind of regulable control panel back during work.Switch is upwards pulled, and AC power (220V) is powered; Switch is pulled downwards, direct supply (12V powers); After energising, utilize function key and add a key, subtract the cooperation of a key, predetermined vehicle water temp display controller work upper and lower limit temperature, then observing temperature relation and the warning instruction situation of real time temperature and bound; LCD backlight is controlled, under night vision working environment, uses the work of night vision key, clearly can observe water temperature display situation, work at night unaffected; Close LCD backlight daytime and reduce power consumption.

Claims

1. water temperature gathers a display controller, comprises power circuit, digital display circuit, temperature collection circuit, it is characterized in that: power circuit is made up of rectification, filtering, mu balanced circuit; V1 is alternating current, by the 12V direct current V2 obtained after rectification, can after three terminal regulator 7805 U3 the 5V DC voltage of stable output, and the switching of alternating current 220V and direct current 12V is realized by switch J1,5V DC voltage is connected with the temperature sensor 18B20 in temperature collection circuit, is communicated with simultaneously and powers with display control circuit; Wherein in temperature collection circuit, the pin 1 of temperature sensor 18B20 is directly connected with 5V positive source, pin 2 to be connected with 10K Ω output terminal VO by power supply, VO is connected with the pin 13 of 8052 single-chip microcomputer U1 in digital display circuit, and pin 3 is connected with power cathode; Digital display circuit is single-chip microcomputer 8052 by U1, U2 is LCDs 1602LCD, the 5V direct supply that three terminal regulator 7805 U3 exports is respectively single-chip microcomputer 8052 U1, LCDs 1602LCD U2 and triode Q1, Q2 power, and in succession switch J2A, J2B, J2C, J2D.

2. gather display controller according to a kind of water temperature described in claim 1, it is characterized in that described 5V direct supply VCC positive pole is directly connected with the output head anode of three terminal regulator U3,5V direct supply VCC positive pole is connected with the pin 1 of temperature sensor 18B20, and is connected with the VCC pin of U2 LCDs 1602LCD with 40 pins of U1 single-chip microcomputer 8052; The negative pole of direct supply 12V is connected with the ground wire of three terminal regulator U3,5V direct supply power supply VCC negative pole is connected with the pin 3 of temperature sensor 18B20, ground wire is connected with the ground wire of three terminal regulator U3, and 20 pins of U1 single-chip microcomputer 8052 are all connected with the negative pole of 5V direct supply with the GND pin of U2 LCDs 1602LCD.

3. gather display controller according to a kind of water temperature described in claim 1, it is characterized in that being connected with crystal oscillator X1 between the pin 18 of described U1 single-chip microcomputer 8052 and pin 19, pin 17 is connected with resistance R5 one end, pin 16 is connected with resistance R2 one end, pin 9 and resistance R4, electric capacity C3 connects, pin 5, 6, 7, 8 link together is connected with switch, pin 39 is connected with the pin D0 of LCDs 1602LCD U2, pin 38 is connected with the pin D1 of liquid crystal display 1602LCD U2, pin 37 is connected with the pin D2 of LCDs 1602LCD U2, pin 36 is connected with the pin D3 of LCDs 1602LCD U2, pin 35 is connected with the pin D4 of LCDs 1602LCD U2, pin 34 is connected with the pin D5 of LCDs 1602LCD U2, pin 33 is connected with the pin D6 of LCDs 1602LCD U2, pin 32 is connected with the pin D7 of LCDs 1602LCD U2, pin 23 is connected with the pin E of LCDs 1602LCD U2, pin 22 is connected with the pin RS of LCDs 1602LCD U2, pin 21 is connected with the pin RW of LCDs 1602LCD U2, pin 13 is that output terminal V0 is connected with temperature sensor 18B20 output terminal pin 2.

4. gather display controller according to a kind of water temperature described in claim 1, it is characterized in that the pin CV of described liquid crystal display 1602LCD U2 is connected with ground wire by resistance R1.