Multi-channel temperature measuring device

Abstract

A multi-channel temperature measuring device comprises a temperature sensor body, a fixing shell, a voltage reduction circuit and a data transmission circuit. The temperature sensor bodies are installed in the fixing shell, the temperature sensing heads of the multiple temperature sensor bodies are located outside the lower end of the fixing shell, and the fixing shell is installed on the temperature measuring point. The step-down circuit and the data transmission circuit are arranged in the element box; the signal output ends of the multiple sets of temperature sensor bodies are electrically connected with the signal input ends of the multiple paths of step-down circuits respectively, and the signal output ends of the multiple sets of step-down circuits are electrically connected with the multiple signal input ends of the data transmission circuit respectively. Based on multiple sets of temperature sensor bodies, temperature measurement can be synchronously carried out on temperature measurement points of corresponding equipment in application, multiple paths of temperature data signals can be remotely transmitted in a wireless mode in real time, remote-end personnel can know field temperature data through a mobile phone or a PC in real time, when abnormity occurs, the abnormity can be timely processed on site, and the safety of the equipment is improved. And a favorable technical support is provided for ensuring the stable and reliable work of corresponding equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of temperature measuring equipment, in particular to a multi-channel temperature measuring device. Background Art

[0002] A temperature sensor (also known as a temperature transmitter) refers to a device that can sense the temperature in a temperature measuring area and convert the temperature signal into a voltage or current signal for output. In practical applications, a temperature display meter can receive the voltage or current signal, and after conversion, the temperature number is provided for on-site personnel to view the temperature data; and the signal output by the temperature sensor is connected to relevant control equipment, and the control equipment controls the working mode of the corresponding working equipment based on the corresponding temperature data, etc.

[0003] Although the existing temperature sensors can meet the acquisition of temperature data to a certain extent, there are still the following technical problems due to structural limitations. Specifically, in places with relatively high temperature requirements, if only one set of temperature sensors is installed, when the temperature sensor fails for various reasons and the output temperature signal is abnormal, it will cause the temperature display not to truly reflect the data of the temperature measuring point of the corresponding working equipment. That is to say, when the temperature is abnormal, relevant personnel cannot go to the site in time to check and conduct targeted disposal. For example, if the low temperature provided by the corresponding refrigeration device is relatively high (high temperature), and the temperature sensor detects and outputs a signal representing a low temperature, relevant personnel cannot repair the corresponding device in time, which will cause abnormal operation of other working equipment provided with low temperature by the corresponding device; another example is that for a control device that inputs a temperature control signal through a temperature sensor, due to the abnormal input temperature signal, the corresponding working equipment controlled is abnormally operated, etc. Although the above problems can be solved to a certain extent by installing more than two sets of temperature sensors at the temperature measuring point, however, when one or two sets of the two sets of temperature sensors, etc. fail, if relevant personnel do not check and handle the situation in time, it will also have an adverse impact on the operation of relevant equipment, etc. In summary, it is very necessary to provide a multi-channel temperature measuring device that can simultaneously detect the temperature data at the corresponding position through multiple sets of temperature sensors, and not only can collect temperature data in real time during application, but also can facilitate relevant personnel to remotely view the temperature data. Summary of the Utility Model

[0004] In order to overcome the disadvantages of the existing temperature sensors due to structural limitations as described in the background, the utility model provides a multi-channel temperature measuring device based on multiple sets of temperature sensor bodies. During application, it can synchronously measure the temperature at the temperature measuring points of the corresponding equipment, and can transmit the temperature data signals output by multiple sets of temperature sensor bodies in a real-time wireless manner to relevant personnel at a remote end. The remote personnel can understand the on-site temperature data in real time and can go to the site in time for processing when an abnormality occurs, which provides a favorable technical support for ensuring the stable and reliable operation of the corresponding equipment.

[0005] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0006] A multi-channel temperature measurement device includes a temperature sensor body and a fixed shell. It is characterized in that it also has a step-down circuit and a data transmission circuit; there are multiple sets of the temperature sensor body and the step-down circuit respectively; the multiple sets of temperature sensor bodies are installed inside the fixed shell, and the temperature sensing heads of the multiple sets of temperature sensor bodies are located outside the lower end of the fixed shell, and the fixed shell is installed at the temperature measurement point; the step-down circuit and the data transmission circuit are installed in the component box; the signal output ends of the multiple sets of temperature sensor bodies and the signal input ends of the multiple-channel step-down circuit are electrically connected respectively, and the signal output ends of the multiple sets of step-down circuits and the multiple signal input ends of the data transmission circuit are electrically connected respectively.

[0007] Further, the temperature sensing surface of the temperature sensor body contacts the temperature measurement point.

[0008] Further, the step-down circuit includes a variable resistor and a resistor that are electrically connected, and one end of the variable resistor is connected to one end of the resistor.

[0009] Further, the data transmission circuit includes a GPRS module and a single-chip microcomputer module that are electrically connected. The power input end of the GPRS module is connected to the power input end of the single-chip microcomputer module, and the signal input end of the GPRS module is connected to the signal output end of the single-chip microcomputer module.

[0010] The beneficial effects of the utility model compared with the prior art are as follows: Based on multiple sets of temperature sensor bodies, during application, it can synchronously measure the temperature at the temperature measurement points of corresponding devices, and can wirelessly transmit multiple-channel temperature data signals in real time. Remote personnel can understand the on-site temperature data in real time through mobile phones or PC computers, etc., and can go to the site for processing in time when abnormalities occur, which provides favorable technical support for ensuring the stable and reliable operation of corresponding devices. Based on the above, the utility model has a good application prospect. Description of the Drawings

[0011] The following will further illustrate the utility model in conjunction with the drawings and embodiments.

[0012] Figure 1 is the structural schematic diagram of the utility model.

[0013] Figure 2 is the circuit diagram of the utility model. Detailed Embodiment

[0014] Figure 1 、 2As shown in the figure, a multi-channel temperature measurement device includes a power supply module A1, a temperature sensor body, and a fixed shell 1, and also has a step-down circuit 2 and a data transmission circuit 3. There are three sets of temperature sensor bodies A2, A3, and A4, and three sets of step-down circuits 2. The three sets of temperature sensor bodies A2, A3, and A4 are vertically and horizontally spaced apart and installed inside the fixed shell 1, and the temperature sensing heads of the three sets of temperature sensor bodies A2, A3, and A4 are respectively located outside the lower end of the fixed shell 1. The fixed shell 1 is installed at the temperature measurement point of the relevant equipment by bolts through the fixing holes at both lower ends. The power supply module A1, the step-down circuit 2, and the data transmission circuit 3 are installed on the circuit board inside the component box 4, and the component box 4 is installed at the side end of the fixed shell 1.

[0015] Figure 1 , 2 As shown in the figure, the temperature sensing surfaces of the temperature sensor bodies A2, A3, and A4 are in contact with the temperature measurement point. The data transmission circuit includes a GPRS module A9 and a single-chip microcomputer module A5 (the main control chip is STM32C0) connected by wires. The power input terminals 1 and 2 of the GPRS module A9 (model ZLAN8100) and the single-chip microcomputer module A5 are respectively connected. The signal input terminal of the GPRS module A9 and the signal output terminal of the single-chip microcomputer module A5 are connected. The other ends of the resistors R1, R2, and R3 at the signal output terminals of the three-step-down circuits are respectively connected to the three signal input terminals 3, 4, and 5 of the single-chip microcomputer module A5 by wires. The first-step-down circuit includes a resistor R1 and a variable resistor RP1 connected by circuit board wiring, and one end of the resistor R1 and the variable resistor RP1 are connected. The second-step-down circuit includes a resistor R2 and a variable resistor RP2 connected by circuit board wiring, and one end of the resistor R2 and the variable resistor RP2 are connected. The third-step-down circuit includes a resistor R3 and a variable resistor RP3 connected by circuit board wiring, and one end of the resistor R3 and the variable resistor RP3 are connected.

[0016] Figure 1 , 2 As shown in the figure, the power input terminals 1 and 2 of the power supply module A1 and the two poles of the AC 220V power supply are respectively connected by wires. The power output terminals 3 and 4 of the power supply module A1, the power input terminals 1 and 2 of the GPRS module A9, the power input terminals 1 and 2 of the single-chip microcomputer module A5, and the power input terminals 1 and 2 of the three sets of temperature sensor bodies A2, A3, and A4 are respectively connected by wires. The signal output terminals 3 of the three sets of temperature sensor bodies A2, A3, and A4 and the other ends of the signal input terminals variable resistors RP1, RP2, and RP3 of the three-step-down circuits are respectively connected by wires. The other ends of the resistors R1, R2, and R4 are connected to the 4th pin of the power supply module A1 by wires.

[0017] Figure 1 , 2As shown in the figure, after the two poles of the AC 220V power supply enter the power input terminals 1 and 2 of the power supply module A1, the power output terminals 3 and 4 of the power supply module A1 output a stable DC 12V power supply, which enters the power input terminals of the three sets of temperature sensor bodies A2, A3, A4 and the data transmission circuit. After the three sets of temperature sensor bodies A2, A3, A4 are powered on, they can simultaneously detect the temperature data of the corresponding temperature measurement points. The three sets of temperature sensor bodies A2, A3, A4 convert the temperature signals into voltage signals. The three circuit signals are respectively divided by the adjustable resistors RP1 and resistor R1, the adjustable resistor RP2 and resistor R2, and the adjustable resistor RP3 and resistor R4, and enter the three signal input terminals 3, 4, and 5 of the single-chip microcomputer module A5. The single-chip microcomputer module A5 converts the input three-channel analog voltage signals into digital signals, and then the digital signals are remotely transmitted through the GPRS module A9. The relevant management parties at the remote end can understand the on-site temperature data in real time through the display screen of the Internet device (smart phone or PC) (due to the three-channel temperature data signals detected, relevant personnel can conveniently compare according to the three-channel temperature data signals. When there are deviations in the three-channel temperature data signals, it means that one or more sets of temperature sensor bodies have failed, and relevant personnel can go to the site for maintenance in time). It should be noted that the single-chip microcomputer module collects multi-channel analog voltage signals (such as the pressure voltage signals output by the water pressure sensor) and converts them into digital signals, which are remotely transmitted through the GPRS module. The remote Internet device receives and displays the corresponding signals in a digital manner through the screen, etc. This is an extremely mature existing Internet of Things data collection, transmission, and display technology. This application does not claim any protection for the single-chip microcomputer module to collect multi-channel analog voltage signals, remotely transmit them through the GPRS module, and the remote Internet device receives and displays the corresponding signals in a digital manner through the screen, etc. What this application protects is that the single-chip microcomputer module collects the analog voltage signals output by the three sets of temperature sensor bodies A2, A3, A4, remotely transmits them through the GPRS module, and the remote Internet device receives and displays the temperature signals detected by the three sets of temperature sensor bodies A2, A3, A4 in a digital manner through the screen, etc. In summary, this new type is based on multiple sets of temperature sensor bodies, can synchronously measure the temperature of the corresponding equipment temperature measurement points during application, and can remotely transmit multiple-channel temperature data signals in a wireless manner. Remote personnel can understand the on-site temperature data in real time through mobile phones or PCs, etc., and can go to the site for processing in time when abnormalities occur, which provides favorable technical support for ensuring the stable and reliable operation of the corresponding equipment. Figure 2 Among them, the power supply module mechanism A1 is a finished product of an AC 220V to DC 12V power supply module; the resistance values of the resistors R1, R2, R3, and R5 are 10K, 10K, 10K respectively; the temperature sensor bodies A2, A3, A4 are temperature transmitters of model CWDZ11, which have two power input terminals and one signal output terminal. The higher the detected temperature, the higher the voltage signal output by the signal output terminal; the resistance values of the adjustable resistors RP1, RP2, and RP3 are 47K (adjusted to 4.1K in this embodiment).

[0018] In the description of the present utility model, unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection, an electrical connection, or a direct connection, or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0019] For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above-described exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present utility model. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present utility model is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be encompassed within the present utility model. Any reference signs in the claims should not be regarded as limiting the claimed claim.

Claims

1. A multi-channel temperature measurement device, comprising a temperature sensor body and a fixed shell, characterized in that: It also has a step-down circuit and a data transmission circuit; the temperature sensor body and the step-down circuit have multiple sets respectively; the multiple sets of temperature sensor bodies are installed inside a fixed shell, and the temperature sensing heads of the multiple sets of temperature sensor bodies are located outside the lower end of the fixed shell, and the fixed shell is installed on the temperature measuring point; the step-down circuit and the data transmission circuit are installed in a component box; the signal output ends of the multiple sets of temperature sensor bodies and the signal input ends of the multi-channel step-down circuits are electrically connected respectively, and the signal output ends of the multiple sets of step-down circuits and the multiple signal input ends of the data transmission circuit are electrically connected respectively.

2. A multi-channel temperature measurement device according to claim 1, characterized in that: The temperature sensing surface of the temperature sensor body contacts the temperature measuring point.

3. A multi-channel temperature measurement device according to claim 1, characterized in that: The step-down circuit comprises an adjustable resistor and a resistor which are electrically connected, and one end of the adjustable resistor is connected to one end of the resistor.

4. A multi-channel temperature measurement device according to claim 1, characterized in that: The data transmission circuit comprises an electrically connected GPRS module and a single-chip microcomputer module. The power input terminal of the GPRS module is connected to the power input terminal of the single-chip microcomputer module, and the signal input terminal of the GPRS module is connected to the signal output terminal of the single-chip microcomputer module.

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