CN210466153U

CN210466153U - Temperature controller with USB interface for high-temperature test chamber

Info

Publication number: CN210466153U
Application number: CN201921740630.7U
Authority: CN
Inventors: 高庆五
Original assignee: Shanghai Aoshen Testing Technology Co Ltd; Shanghai Haitai Auto Parts Co ltd
Current assignee: Shanghai Aoshen Testing Technology Co Ltd; Shanghai Haitai Auto Parts Co ltd
Priority date: 2019-10-15
Filing date: 2019-10-15
Publication date: 2020-05-05
Anticipated expiration: 2029-10-15

Abstract

The utility model relates to a high temperature test case technical field, it discloses a temperature controller with USB interface for high temperature test case, including temperature out sensor, AD converter and singlechip, the output of temperature sensor and the input signal connection of AD converter, the input signal connection of singlechip has first real-time clock chip, writes into real-time/date data; the output end of the singlechip is connected with a delay module, and the output end of the delay module is connected with a data output port; the output end of the singlechip is in signal connection with a second real-time clock chip for reading real-time/date data. According to the technical scheme, the USB interface is arranged on the temperature controller, the measured temperature data are transmitted to the USB flash disk inserted on the USB interface in real time, data in the test process are exported, and the traceability of the data is provided.

Description

Temperature controller with USB interface for high-temperature test chamber

Technical Field

The utility model relates to a high temperature test case technical field, more specifically say, it relates to the temperature controller who possesses the USB interface for high temperature test case.

Background

The high-temperature test box is necessary test equipment in the fields of aviation, automobiles, household appliances, scientific research and the like, and is used for testing and determining parameters and performances of electricians, electronics and other products and materials after the temperature environment changes in high-temperature or constant tests.

The temperature controller (Thermostat) generates physical deformation inside the switch according to the temperature change of a working environment, thereby generating certain special effects, and generating a series of automatic control elements for conducting or disconnecting actions, or providing temperature data for a circuit by different principles of working states of an electronic element at different temperatures so as to collect the temperature data by the circuit.

According to the requirements of ISO17025, all experimental data need to have traceability, however, the measurement data of the existing high-temperature test box has no traceability, and the test measurement data is difficult to track after the test is finished.

SUMMERY OF THE UTILITY MODEL

The technical problem who is difficult to trail and trace back to the high temperature test case measured data that proposes in the background art, the utility model aims at providing a temperature controller who is used for the high temperature test case to possess the USB interface, through set up the USB interface on temperature controller, the temperature data who arrives transmits in real time inserts on the USB interface on the USB flash disk, derives the data in the testing process, provides the traceability of data.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the temperature controller with the USB interface for the high-temperature test chamber comprises a temperature sensor, an A/D converter and a single chip microcomputer, wherein the output end of the temperature sensor is in signal connection with the input end of the A/D converter, and the output end of the A/D converter is in signal connection with the input end of the single chip microcomputer;

the input end of the singlechip is in signal connection with a first real-time clock chip and is written with real-time/date data;

the output end of the single chip microcomputer is connected with a delay module, and the output end of the delay module is connected with a data output port;

the output end of the single chip microcomputer is in signal connection with a second real-time clock chip and used for reading real-time/date data, and the signal output end of the second real-time clock chip is in signal connection with the data output port and used for outputting real-time temperature and time/date data.

Through the technical scheme, most of the existing high-temperature test boxes generally do not have USB interfaces and can be used for collecting and storing data, however, according to the requirements of ISO17025, all experimental data need to have traceability. Therefore, the controller is internally provided with a first real-time clock chip for writing real-time/date data into the single chip microcomputer, and is also provided with a second real-time clock chip for reading the real-time/date data in the single chip microcomputer, and a delay module for transmitting the measured temperature data to the USB interface in real time according to the set recording time interval. The staff can connect the removal USB flash disk on the USB interface, and USB flash disk data can be pulled out according to the user's demand and inserted on the computer and derive the temperature data that corresponds to the date time in the test process, realizes high temperature test case measured data's tracking and traceing back.

The utility model discloses further set up to: the data output port is configured as a USB output port, and a removable hard disk memory is externally connected to the USB output port.

Through the technical scheme, the mobile hard disk storage is connected, and can store the data output by the data output port and copy the data from the mobile hard disk at any time according to the requirement of an operator.

The utility model discloses further set up to: the first real-time clock chip and the second real-time clock chip both adopt real-time clocks with the model number of DS 1302;

the first real-time clock chip writes real-time/date data into the single chip microcomputer in real time, and the second real-time clock chip reads the real-time/date data in the single chip microcomputer in real time.

With the above technical solution, the DS1302 is a low-power consumption real-time clock chip with trickle current charging capability, which is introduced by DALLAS corporation of usa. The clock can time the year, month, day, week, hour, minute and second, and has a plurality of popular serial clock circuits with leap year compensation and other functions, such as DS1302, DS1307, PCF8485 and the like. The interfaces of the circuits are simple, low in price and convenient to use, and are widely adopted. The real-time clock circuit DS1302 described herein is a circuit with trickle-current charging capability from DALLAS corporation, and is mainly characterized by using serial data transmission to provide programmable charging function for the power-down protection power supply and to turn off the charging function. A common 32.768kHz crystal oscillator is used.

The utility model discloses further set up to: the real-time clock chip of the DS1302 is packaged with DIP (Dual In-line Package).

By the technical scheme, the DIP packaging is also called dual in-line packaging technology, dual in-line packaging and an element packaging form of the DRAM. The chip is packaged in a dual-in-line mode, most of small and medium-scale integrated circuits are packaged in the mode, and the pin number of the small and medium-scale integrated circuits does not exceed 100 generally.

The utility model discloses further set up to: the delay module is realized by a delay program burnt in the singlechip, and the set value of the delay time T can be set arbitrarily.

According to the technical scheme, the delay function is set by adopting a delay program in the single chip microcomputer, and the numerical value of the delay time T required to be set can be set at will through the program.

The utility model discloses further set up to: the USB output ports are provided with a plurality of USB output ports, and each USB output port is externally connected with a removable hard disk memory.

The utility model discloses further set up to: the removable hard disk memory adopts a U disk.

The utility model discloses further set up to: the singlechip adopts STC89C52 singlechip, and the A/D converter adopts 24 bit A/D converters of model HX 711.

Through above-mentioned technical scheme, set up a plurality of USB output ports, and equally be connected with portable hard disk memory outward respectively, a plurality of portable hard disk memory can save simultaneously, prevent that single portable hard disk memory storage information inaccurate condition from taking place.

To sum up, the utility model discloses following beneficial effect has:

the USB interface is arranged on the temperature controller, measured temperature data are transmitted to the USB flash disk inserted on the USB interface in real time, data in the test process are exported, and data traceability is provided.

Drawings

Fig. 1 is a schematic diagram of the transmission principle of real-time temperature and time/date data signals in a temperature controller.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

A temperature controller that is used for possessing USB interface of high temperature test case, as figure 1, go out the sensor including the temperature, AD converter and singlechip, temperature sensor's output and AD converter's input signal connection, the temperature signal that temperature sensor measured is analog signal, turn into the digital signal that the singlechip can read through AD converter with this analog temperature signal, AD converter's output and the input signal connection of singlechip, transmit digital temperature signal and save in the singlechip, conveniently derive this digital temperature signal, improve the traceability of temperature data.

Because the temperature has the time/date data information of the corresponding time point, in order to obtain the time/date corresponding to each temperature value, a first real-time clock chip is connected to the input end of the single chip microcomputer in a signal mode, and the first real-time clock chip is used for writing real-time/date data into the single chip microcomputer.

The output end of the single chip microcomputer is in signal connection with a second real-time clock chip, the second real-time clock chip is used for reading real-time/date data from the single chip microcomputer, and the signal output end of the second real-time clock chip is in signal connection with the data output port and outputs real-time temperature and time/date data.

Meanwhile, the output end of the single chip microcomputer is connected with a delay module, and the delay module has the function of transmitting measured temperature data to the USB interface in real time according to a set recording time interval. Specifically, in this embodiment, the delay time T set value of the delay function can be set arbitrarily by a delay program burned in the single chip microcomputer. And outputting the delayed output data to a data output port. The data output port is configured as a USB output port, and a removable hard disk memory is externally connected to the USB output port. The USB output ports are provided with a plurality of USB output ports, each USB output port is externally connected with a removable hard disk memory, and the removable hard disk memory adopts a U disk.

The first real-time clock chip and the second real-time clock chip both adopt real-time clocks with the model number of DS 1302; the first real-time clock chip writes real-time/date data into the single chip microcomputer in real time, and the second real-time clock chip reads the real-time/date data in the single chip microcomputer in real time. The real-time clock chip of the DS1302 is packaged with DIP (Dual In-line Package). The singlechip adopts STC89C52 singlechip, and the A/D converter adopts 24 bit A/D converters of model HX 711.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A temperature controller that is used for possessing USB interface of high temperature test case, including temperature sensor, AD converter and singlechip, temperature sensor's output and AD converter's input signal connection, the output of AD converter and the input signal connection of singlechip, its characterized in that:

2. The temperature controller with a USB interface for a high-temperature test chamber according to claim 1, wherein: the data output port is configured as a USB output port, and a removable hard disk memory is externally connected to the USB output port.

3. The temperature controller with a USB interface for a high-temperature test chamber according to claim 1, wherein: the first real-time clock chip and the second real-time clock chip both adopt real-time clocks with the model number of DS 1302;

4. The temperature controller with a USB interface for a high-temperature test chamber according to claim 3, wherein: the real time clock chip of the DS1302 is packaged in DIP.

5. The temperature controller with a USB interface for a high-temperature test chamber according to claim 1, wherein: the delay module is realized by a delay program burnt in the singlechip, and the set value of the delay time T can be set arbitrarily.

6. The temperature controller with a USB interface for a high-temperature test chamber according to claim 2, wherein: the USB output ports are provided with a plurality of USB output ports, and each USB output port is externally connected with a removable hard disk memory.

7. The temperature controller with a USB interface for a high-temperature test chamber according to claim 6, wherein: the removable hard disk memory adopts a U disk.

8. The temperature controller with a USB interface for a high-temperature test chamber according to claim 1, wherein: the singlechip adopts STC89C52 singlechip, and the A/D converter adopts 24 bit A/D converters of model HX 711.