CN202504046U

CN202504046U - Fish tank thermostatic control device

Info

Publication number: CN202504046U
Application number: CN2012201727306U
Authority: CN
Inventors: 傅小红
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-04-23
Filing date: 2012-04-23
Publication date: 2012-10-31
Anticipated expiration: 2022-04-23

Abstract

The utility model relates to a fish tank thermostatic control device which comprises a temperature sensor, a trigger circuit, a heating circuit, a vice alarm circuit and an indicator light circuit. Output signals of the temperature sensor are sent to the heating circuit, the vice alarm circuit and the indicator light circuit through the trigger circuit. The fish tank thermostatic control device adopts a thermistor as the temperature sensor, and the temperature sensor and a 555 time base integrated trigger circuit form the alarm circuit capable of keeping automatic control within certain temperature range. The fish tank thermostatic control device is suitable for monitoring and controlling temperature of fish tanks and the like, and sends out a voice alarm to prompt a host to observe water temperature inside the fish tanks when a detected water temperature is too high or too low so that the water temperature is abnormal.

Description

A kind of fish jar thermostatically-controlled equipment

Technical field

The utility model relates to a kind of control device, particularly be a kind of fish jar thermostatically-controlled equipment.

Background technology

Fish jar can beautifying household environment, and the fingerling that some is higher to water temperature requirements will keep water temperature in stable scope; The general difficulty that adopts in the market is the mode of heating rod; Advantage is that cost is low, and shortcoming is to control water temperature, and influences the attractive in appearance of fish jar.

The utility model content

The purpose of the utility model is to overcome above-mentioned deficiency, and a kind of fish jar thermostatically-controlled equipment is provided.

The utility model solves the technical scheme that its technical problem adopted: a kind of fish jar thermostatically-controlled equipment; Comprise temperature sensor, circuits for triggering, heater circuit, voice alarm circuit and indicator light circuit, the output signal of said temperature sensor is sent to heater circuit, voice alarm circuit and indicator light circuit through circuits for triggering control.

Said temperature sensor adopts and is put in water-bed negative tempperature coefficient thermistor Rt collecting temperature signal, and negative tempperature coefficient thermistor Rt connects power supply through resistance R 1, and through potentiometer R2 ground connection.

Basis set became chip IC 1 when said circuits for triggering adopted NE555.

Said heater circuit adopts to be put in and water-bed is coated with the heater RL of tight sealing with epoxy resin, and basis set becomes chip IC 1 output to be connected to heater RL through controllable silicon RCT during the NE555 of said circuits for triggering.

Said voice alarm circuit is made up of the photoelectrical coupler U1, transistor T 1, KH005 recorded speech chip U2, the LM386 audio-frequency amplifier U3 Homeway.com Chinese percussion instrument Y that connect successively.

Through adopting above-mentioned technical scheme; The beneficial effect of the utility model is: the utility model employing thermistor is made temperature sensor and is become circuits for triggering to constitute a kind of warning circuit of the automatic control that in certain temperature range, keeps with 555 o'clock basis sets; Be applicable to the water temperature of Monitoring and Controlling fish jar etc., and when detected water temperature too high or too low, when making water temperature unusual; Send audio alert immediately, the prompting owner observes the fish jar water temperature inside.

Description of drawings

Fig. 1 is the frame assumption diagram of the utility model;

Fig. 2 is the circuit theory diagrams of the utility model.

Embodiment

Like Fig. 1, shown in Figure 2; A kind of fish jar thermostatically-controlled equipment of the utility model; Comprise temperature sensor 1, circuits for triggering 2, heater circuit 3, voice alarm circuit 4 and indicator light circuit 5, the output signal of said temperature sensor 1 is sent to heater circuit 3, voice alarm circuit 4 and indicator light circuit 5 through circuits for triggering 2 controls.

Said temperature sensor 1 adopts and is put in water-bed negative tempperature coefficient thermistor Rt collecting temperature signal; Negative tempperature coefficient thermistor Rt connects power supply through resistance R 1; And through potentiometer R2 ground connection, basis set became chip IC 1 when said circuits for triggering 2 adopted NE555, and said heater circuit 3 adopts and is put in the water-bed heater RL that is coated with tight sealing with epoxy resin; Basis set becomes chip IC 1 output to be connected to heater RL through controllable silicon RCT during the NE555 of said circuits for triggering 2; Red led LED1, green indicating lamp LED2 are as the heated condition indicator lamp, and red led LED1 is dark, and the bright expression of green indicating lamp LED2 is heated.

When water temperature was low, the resistance of negative tempperature coefficient thermistor Rt was higher, the dividing potential drop of resistance R 1, negative tempperature coefficient thermistor Rt and potentiometer R2; Make A point current potential be lower than 1/3Vcc, therefore, basis set becomes chip IC 1 internal circuit upset output high level during NE555; Green indicating lamp LED2 is luminous, and red led LED1 extinguishes, and this high level provides trigger current through resistance R 6 to controllable silicon RCT; Controllable silicon RCT conducting; Heater RL obtains electricity to the water heating, and the 3rd pin output high level signal that basis set becomes chip IC 1 during owing to NE555 makes photoelectrical coupler U1 conducting through resistance R 6 current limlitings; Transistor T 1 is conducting thereupon also, sends to KH005 recorded speech chip U2, LM386 audio-frequency amplifier U3 and gets electrician's work respectively.The 2nd pin output audio signal of KH005 recorded speech chip U2, KH005 recorded speech chip U2 is repeatedly the recorded speech chip, this signal is added to the 3rd pin of LM386 audio-frequency amplifier U3 through capacitor C 5 couplings; Regulator potentiometer W can change the sound power size; After LM386 audio-frequency amplifier U3 internal audio frequency amplifies, by its 5th pin output, after capacitor C 3 couplings are amplified; Promote news Chinese percussion instrument Y and send audio alert, reach and remind owner to note water temperature.

Prescribe a time limit when water temperature is raised to going up most of permission, negative tempperature coefficient thermistor Rt resistance becomes lower, and then A point current potential raises; Basis set becomes chip IC 1 to turn over the attitude that stabilizes when making NE555, its 3rd pin output low level, the luminous indication of red led LED1; Green indicating lamp LED2 extinguishes; Simultaneously, controllable silicon RCT is turned off, and heater RL stops heating; When water temperature drop to again permission the most in limited time, heater RL is again from the heating of trend water, so circulation guarantees that water temperature is constant in certain limit.

An above-described preferred embodiment that is merely the utility model can not limit the scope that the utility model is implemented, and every equalization of being done according to the utility model claim changes and decorates, and all should still belong in the scope that the utility model contains.

Claims

1. fish jar thermostatically-controlled equipment; It is characterized in that: comprise temperature sensor (1), circuits for triggering (2), heater circuit (3), voice alarm circuit (4) and indicator light circuit (5), the output signal of said temperature sensor (1) is sent to heater circuit (3), voice alarm circuit (4) and indicator light circuit (5) through circuits for triggering (2) control.

2. fish jar thermostatically-controlled equipment according to claim 1; It is characterized in that: said temperature sensor (1) adopts and is put in water-bed negative tempperature coefficient thermistor Rt collecting temperature signal; Negative tempperature coefficient thermistor Rt connects power supply through resistance R 1, and through potentiometer R2 ground connection.

3. fish jar thermostatically-controlled equipment according to claim 3 is characterized in that: basis set became chip IC 1 when said circuits for triggering (2) adopted NE555.

4. fish jar thermostatically-controlled equipment according to claim 1; It is characterized in that: said heater circuit (3) adopts to be put in and water-bed is coated with the heater RL of tight sealing with epoxy resin, and basis set becomes chip IC 1 output to be connected to heater RL through controllable silicon RCT during the NE555 of said circuits for triggering (2).

5. fish jar thermostatically-controlled equipment according to claim 1 is characterized in that: said voice alarm circuit (4) is made up of the photoelectrical coupler U1, transistor T 1, KH005 recorded speech chip U2, the LM386 audio-frequency amplifier U3 Homeway.com Chinese percussion instrument Y that connect successively.