AUTOMATIC FISH GRILLER BASED ON TEMPERATURE CONTROLLER

The automatic fish grill is a tool that is very helpful for food vendors who are processed in a roasting manner. For now, conventional automatic grills that are already on the market have very expensive prices so that many traders still use manual fish grills which are less efficient in the process of doing them. The purpose of making this automatic fish grill design is to help human work to save more time and energy. The automatic fish roasting box is designed with heat absorbers in each layer, equipped with two racks, each measuring 50cm and also equipped with 2 250 watt heaters. From the test results using different types of carp with different weights, it shows that the automatic fish grill works well and gets a 100% percentage result with evenly cooked fish. The economical level of automatic fish grill has a good value, the whole design of automatic fish grill uses good quality materials and materials. For now, automatic roasters on the market have very expensive prices, this difference in price has made many traders not take full advantage of the technology. Because of this problem, researchers created an automatic fish grill based on a temperature controller, which is targeted at an inexpensive price, but can still be used safely and with maximum results. Thus, using a temperature controller-based automatic fish grill design can help simplify work to make it more efficient and safer.


INTRODUCTION
At this time the food menu that is cooked using a grill is in great demand by the public because it can reduce the amount of cholesterol in food, so a special grill is needed that can process food properly.
Therefore it is recommended for adults to choose foods that are low in cholesterol. Of the many street vendors and restaurants that provide grill dishes such as grilled chicken, grilled fish, roast meat, roast duck and so on. The roasting utensils used mostly still use manual roasters. This grill is made in the presence of a charcoal fuel storage basin whose air supply is given manually with human assistance to drive the fan and some use an electric fan to stabilize the charcoal. The operation of this tool has many shortcomings, namely the heat generated from the charcoal is not maximal, the fan speed still depends on humans so that the level of cooking can not be controlled properly and cholesterol levels in food are still high.
This automatic fish grill is only an alternative, not a substitute for charcoal fuel, which can create the distinctive taste of grilled fish. Charcoal grills will produce smoke which will pollute the surrounding air and over time will cause respiratory infections if inhaled continuously by humans. To shorten baking time and make work more effective. Researchers are motivated to design an automatic fish grill based on a temperature controller. Where later this tool has advantages compared to traditional grills, namely, it can grill fish automatically, can control the level of cooking maturity which is controlled by a temperature sensor, the controller is designed to make it easier to regulate and monitor the desired heat temperature. This system consists of a Power Supply, a series of controllers, a series of temperature sensors, drivers, heating elements (heater), Buzzer and LCD which functions as a display. If the previous roasting still used charcoal, in this modern era researchers will create an automatic roaster using electrical energy that is flowed through a low-power nickeline wire heating element. When compared to charcoal grills, the heating process of a grill that uses a heating element will be faster because it uses electricity as the main energy source.

METHOD
The design of this automatic fish grill was carried out from April 2019 to June 2019, at the Lab. Electrical, Electrical Engineering Study Program, FTI, Universitas PGRI Adi Buana Surabaya.
The scope of this research is to make a lower temperature limit of 29 ° C and an upper limit temperature of 36 ° C, using MCS51 software programming, AT89S52 Microcontroller IC, DS18B20 temperature sensor, using a seven segment display. The variables in this study consisted of the independent variable, namely the temperature sensor, and the dependent variable, namely the alarm on the incubator.
The data collection method uses the observation method which observes the work of the tool when it is operational. While the data analysis method uses descriptive analysis, which describes the work of the tool by measuring the parameters and outlined in the form of tables and graphs.

a. Presentation of Power Efficiency Data
In the power efficiency test below, it aims to determine the power value when the fish grill operates, so that it is converted to the kWh calculation with the formula Researchers conducted sampling for 5 hours, the sampling process was carried out every 1 hour so that the value of power (kWh) was found. The heater works at 100-500 watts of power per grill Tabel 1. Penyajian efisiensi daya dengan suhu 100°C In the kWh test, the automatic grill is proven to have better efficiency because the power produced is smaller than a grill that uses a large power heater. The roaster in this study has an average power of 472Watt with an average kWh of 1.4 kWh.
This provides an economical advantage to users with a small scale compared to conventional roasters if calculated with the above formula when the maximum usage is 500 watts, the result reaches 2.5 kWh in 5 hours of use. The sensors and timers used to monitor the temperature in the fish grill function properly, as evidenced by the accuracy of the alarm function testing was carried out five times on types of carp with different weights, the temperature in each test was set at 100 ° C, for each trial. in settings ranging from 25-55 minutes. And the accuracy value of the alarm sound is good and results in perfect fish maturity.

CONCLUSION
1. Grills have a good power efficiency rating compared to conventional grills which require high wattage 2. The economical level of the grill has a good value, the whole design costs Rp. 3,000,000, this value is very far from being compared to conventional roasters which reach Rp. 6,000,000 to Rp. 3. 100% accuracy percentage with an alarm sound function when the roasting process is complete with mature results.