CN211720828U - Novel circuit board - Google Patents

Abstract

The application relates to a novel circuit board, wherein, this novel circuit board includes: the first circuit board comprises a processor and a wireless communication module, the processor is connected with the wireless communication module, the second circuit board comprises a first positioning element and a function sensor, the first circuit board is connected with the first positioning element, and the processor is connected with the function sensor. Through the method and the device, the problem that the existing Internet of things equipment needs to be developed according to different application scenes is solved, and the technical effects of reducing development cost and being simple to debug are achieved.

Description

Novel circuit board

Technical Field

The application relates to intelligence thing networking equipment field especially relates to a novel circuit board.

Background

When using the intelligent internet of things device, different communication modes are usually selected according to different use scenes, and the wireless communication modes include: 2G, 4G, NBIoT, Lora. When some low-frequency data transmission Internet of things equipment such as a water pressure sensor, a liquid level sensor, a flow sensor and a water sensor needs to be used, power consumption and signal penetration capacity need to be considered, under the condition, NBIoT is generally used as a wireless communication mode, when the equipment needs to be kept online for a long time, such as intelligent light control and an intelligent electric meter, in order to facilitate background real-time monitoring of the equipment, a 2G communication module is generally selected, and when the equipment needs to be kept online for a long time to monitor the equipment in real time and high requirements on data transmission and delay are required, such as an intelligent elevator control system, 4G is used as a communication mode. Especially in the area that the operator signal can not cover, it also needs to convert the NBIOT, 2G, 4G gateway into private network to access the relevant device.

Generally speaking, a proper communication mode needs to be selected according to different application scenarios to develop different internet of things devices, for a water pressure sensor, different wireless communication modes need to be used in different application scenarios, for example, under the condition of low-frequency data transmission, the water pressure sensor needs an NBIoT module as the wireless communication mode, and under the condition that the water pressure sensor needs the devices to be online for a long time to facilitate real-time monitoring, a 2G module needs to be used. That is, for the water pressure sensor, it is necessary to develop a plurality of types of water pressure sensors at the same time to meet the demands of different scenes. For example, intelligent light control, if only need intelligent light control when long-time online, need use 2G communication module, but still need have when higher requirement to data transmission and delay when intelligent light control, just need use 4G communication module, just so need develop multiple intelligent light controlgear and deal with different use scenes. Because various intelligent internet of things devices are developed according to different application scenes, when radio frequency debugging is carried out on the internet of things devices, each device needs to be independently debugged.

Aiming at the problems that the development difficulty, the development cost and the debugging complexity are increased due to the fact that a plurality of internet of things devices are required to be developed to be debugged independently according to different application scenes, an effective solution is not provided.

SUMMERY OF THE UTILITY MODEL

The utility model provides a novel circuit board to solve the multiple thing networking device of thing networking device development in different application scenes at least, the increase development degree of difficulty that leads to, increase development cost and debug loaded down with trivial details problem.

The utility model provides a novel circuit board, include:

the first circuit board comprises a processor and a wireless communication module, and the processor is connected with the wireless communication module;

the second circuit board comprises a first positioning element and a function sensor, the first circuit board is connected with the first positioning element, and the processor is connected with the function sensor.

In one embodiment, the second circuit board further includes at least one second positioning element, and the second positioning elements are at least obliquely and symmetrically arranged on the second circuit board.

In one embodiment, the first circuit board further comprises a memory unit, and the memory unit is connected with the processor.

In one embodiment, the wireless communication module comprises NBIoT, 2G, 4G, or Lora.

In one embodiment, the first circuit board further comprises a voltage stabilizing unit, and the voltage stabilizing unit is connected with the processor.

In one embodiment, the first circuit board further includes a first voltage conversion unit, and the first voltage conversion unit is connected to the processor.

In one embodiment, the first circuit board further comprises a voltage protection unit, and the voltage protection unit is connected with the processor.

In one embodiment, the second circuit board further comprises a reset unit, and the reset unit is connected with the processor of the first circuit board.

In one embodiment, the second circuit board further comprises a second voltage conversion unit connected to the processor of the first circuit board.

In one embodiment, the second circuit board further includes a heat sink control module, and the heat sink control module is connected to the processor of the first circuit board.

Compared with the prior art, the embodiment of the application provides a novel circuit board, constitute a novel circuit board through first circuit board and second circuit board, first circuit board includes treater and wireless communication module, the second circuit board includes first locating element and function sensor, first circuit board and second circuit board make up wantonly and become different products, it is big to have solved current needs according to the multiple thing networking device in-process development degree of difficulty of different application scenes development, with high costs and the loaded down with trivial details problem of debugging, the simple technological effect of development cost and debugging has been realized reducing.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic diagram of a novel circuit board according to an embodiment of the present invention;

fig. 2 is a first block diagram of a first circuit board according to an embodiment of the present invention;

fig. 3 is a first schematic diagram of a second circuit board according to an embodiment of the present invention;

fig. 4 is a block diagram ii of the first circuit board according to the embodiment of the present invention;

fig. 5 is a block diagram of a first circuit board according to an embodiment of the present invention;

fig. 6 is a block diagram of a first circuit board according to an embodiment of the present invention;

fig. 7 is a block diagram of a first circuit board according to an embodiment of the present invention;

fig. 8 is a block diagram six of a first circuit board according to an embodiment of the present invention;

fig. 9 is a block diagram seven of the first circuit board according to the embodiment of the present invention;

fig. 10 is a block diagram eight of the first circuit board according to the embodiment of the present invention;

fig. 11 is a second schematic diagram of a second circuit board according to an embodiment of the present invention;

fig. 12 is a block diagram of a second circuit board according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application will be described and illustrated below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments provided in the present application without any inventive step are within the scope of protection of the present application.

It is obvious that the drawings in the following description are only examples or embodiments of the present application, and that it is also possible for a person skilled in the art to apply the present application to other similar contexts on the basis of these drawings without inventive effort. Moreover, it should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions must be made to achieve the developers' specific goals, such as compliance with system-related and business-related constraints, which may vary from one implementation to another.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of ordinary skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments without conflict.

Unless defined otherwise, technical or scientific terms referred to herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. Reference to "a," "an," "the," and similar words throughout this application are not to be construed as limiting in number, and may refer to the singular or the plural. The present application is directed to the use of the terms "including," "comprising," "having," and any variations thereof, which are intended to cover non-exclusive inclusions; for example, a process, method, system, article, or apparatus that comprises a list of steps or modules (elements) is not limited to the listed steps or elements, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Reference to "connected," "coupled," and the like in this application is not intended to be limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. The term "plurality" as referred to herein means two or more. "and/or" describes an association relationship of associated objects, meaning that three relationships may exist, for example, "A and/or B" may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship. Reference herein to the terms "first," "second," "third," and the like, are merely to distinguish similar objects and do not denote a particular ordering for the objects.

Example 1

The application provides a novel circuit board can be applied to the development of thing networking device. Fig. 1 is a schematic diagram of a novel circuit board according to an embodiment of the present invention, as shown in fig. 1, the novel circuit board includes a first circuit board 110 and a second circuit board 120, and the first circuit board 110 and the second circuit board 120 are detachably connected.

Fig. 2 is a first block diagram of a first circuit board according to an embodiment of the present invention, as shown in fig. 2, the first circuit board 110 includes a processor 111 and a wireless communication module 112, wherein the processor 111 is an integrated circuit chip. The wireless communication module 112 may be any one or a combination of NBIoT, 2G, 4G, and Lora modules.

The processor 111 is a control center of the first circuit board 110, controls various circuit elements of the first circuit board 110 through the processor 111, and is capable of receiving and transmitting data, and controls the terminal device through data transmission. The wireless communication module 112 communicates data in a wireless transmission manner, and inputs and outputs the data.

Because the processor 111 and the wireless communication module 112 are integrated on the first circuit board 110, only the first circuit board 110 needs to be subjected to wireless communication debugging, and each developed product does not need to be independently debugged, so that the problem that various internet of things devices need to be developed according to different application scenes in the prior art is solved, and the technical effects of reducing development cost and being simple to debug are achieved.

Fig. 3 is a first schematic diagram of a second circuit board according to an embodiment of the present invention, as shown in fig. 3, the second circuit board 120 includes a first positioning element 121 and a function sensor 122, the first circuit board 110 is connected to the second circuit board 120 through the first positioning element 121, and the function sensor 122 is connected to the processor 111.

The second circuit board 120 is connected to the first circuit board 110 through the first positioning element 121 to form a novel circuit board, the function sensor 122 is connected to the processor 111 and sends detection data to the processor 111, and the processor 111 processes the detection data and sends the processed detection data to the terminal through the wireless communication module 112.

The function sensor 122 is typically a temperature sensor, a humidity sensor, a water level sensor, or the like.

The second circuit board 120 is connected with the first circuit board 110 through the first positioning element 121, and the first circuit board 110 can be combined with the second circuit board 120 at will, so that the problem that multiple internet of things devices need to be developed according to different application scenes in the prior art is solved, and the technical effects of reducing development cost and being simple to debug are achieved.

The second circuit board 120 further includes at least one second positioning unit, and the second positioning unit is at least obliquely and symmetrically disposed on the second circuit board 120.

Generally speaking, the number of the second positioning units is 2 to 3, and the plurality of second positioning units are obliquely and symmetrically disposed on the second circuit board 120, for example, 2 second positioning units are disposed diagonally or 3 second positioning units are disposed in a triangular shape.

Wherein, the second positioning unit is used for being connected with the protective housing, and after first circuit board 110 is connected with second circuit board 120 and is formed novel circuit board, the protective housing makes novel circuit board install in the inside of protective housing through being connected with the second positioning unit, and then plays the guard action to novel circuit board.

Through setting up second locating element at the second circuit board for novel circuit board is connected with the protective housing, has solved the problem that novel circuit board does not have protection device, has realized novel circuit board normal use.

Fig. 4 is a block diagram of a second structure of the first circuit board according to the embodiment of the present invention, as shown in fig. 4, the first circuit board 110 further includes a storage unit 113, and the storage unit 113 is connected to the processor 111.

Since the storage space of the processor 111 is small, the operation speed of the processor 111 is greatly affected after the processor 111 receives a large amount of data and stores the data in the storage space of the processor 111, so that the processor 111 needs to be externally connected with the storage unit 113 to expand the storage space and store the data required by the processor 111, and the memory 111 can call the data of the storage unit 113 at any time.

Wherein the storage unit may be a memory.

The storage unit 113 is connected with the processor 111, so that the problems that the internal storage space of the processor 111 is small and a large amount of data cannot be stored are solved, and the technical effect that the processor 111 can store a large amount of data is achieved.

Fig. 5 is a block diagram of a structure of the first circuit board according to an embodiment of the present invention, and as shown in fig. 5, the first circuit board 110 further includes a voltage stabilizing unit 114, and the voltage stabilizing unit 114 is connected to the processor 111. The voltage stabilizing unit 114 serves to stabilize a voltage and generate a stable current when an external voltage fluctuates.

The voltage regulator unit 114 may be a voltage regulator.

The voltage stabilizing unit 114 is connected with the processor 111, so that a continuous and stable voltage can be provided for the processor 111, the problem that the processor 111 is damaged due to unstable voltage is solved, and the normal and stable operation of the processor 111 is realized.

Fig. 6 is a fourth block diagram of the first circuit board according to the embodiment of the present invention, as shown in fig. 6, the first circuit board 110 further includes a first voltage conversion unit 115, and the first voltage conversion unit 115 is connected to the wireless communication module 112. The first voltage conversion unit 115 is used for converting the voltage connected to the outside into a voltage suitable for the wireless communication module 112, so that the problem of damage to the wireless communication module 112 due to an excessive external voltage is solved.

Wherein the first voltage converting unit 115 may be a voltage converter.

Fig. 7 is a block diagram of a fifth structure of the first circuit board according to the embodiment of the present invention, as shown in fig. 7, the first circuit board 110 further includes a voltage protection unit 116, and the voltage protection unit 116 is connected to the processor 111.

The voltage protection unit 116 is configured to change the resistance value from high to low under the condition of high energy impact of the reverse transient state, and absorb higher surge power generated in the whole process, so that the two ends of the voltage protection unit 116 maintain a predetermined value, and the processor 111 and the components connected to the processor 111 are effectively protected.

The voltage protection unit 116 may be a transient suppression diode, among others.

The voltage protection unit 116 is connected with the processor 111, so that the problem that the processor 111 is damaged due to high voltage is solved, and the normal operation of the processor 111 is realized.

The second circuit board 120 further includes a reset unit, which is connected to the processor 111.

Wherein, when the novel circuit board appears the dead halt or the maloperation phenomenon, make novel circuit board reset to initial condition through the reset unit, guarantee the normal operating of novel circuit board.

The reset unit may be a key reset circuit.

The second circuit board 120 further includes a second voltage conversion unit for converting a voltage connected to the second circuit board 120, so as to prevent the second circuit board 120 and the circuit devices of the first circuit board 110 from being damaged due to an excessive external voltage.

Wherein the second voltage converting unit may be a voltage converter.

The second circuit board 120 further includes a heat dissipation unit control module, which is connected to the processor 111.

The heat dissipation unit control module is used for controlling the heat dissipation unit, and when the temperature of the circuit board is high, the processor 111 sends an instruction to control the heat dissipation device, so that the circuit board is cooled by operating the heat dissipation device.

Example 2

The present embodiment is a specific embodiment of the first circuit board 110, fig. 8 is a block diagram six of a structure of the first circuit board according to an embodiment of the present invention, as shown in fig. 8, the first circuit board 110 includes a processor 111, a wireless communication module 112, a storage unit 113, a voltage stabilizing unit 114, a first voltage converting unit 115, a SIMCard module 117, and a level converting unit 119. The processor 111 is connected to the wireless communication module 112, the memory unit 113 is connected to the processor 111, the voltage regulator unit 114 is connected to the processor 111, the first voltage converter unit 115 is connected to the wireless communication module 112, the SIMCard module 117 is connected to the wireless communication module 112, and the level converter unit 119 is connected to the processor 111 and the wireless communication module 112, respectively.

Wherein, processor 111 is the singlechip, and its model is STM32G071CBU 6.

The wireless communication module 112 is an NBIoT module, which is model ME 3616.

Memory cell 113 is a memory chip, model number W25X20 CL.

The voltage regulation unit 114 is a linear voltage regulation chip with model number LP 5907.

The first voltage conversion unit 115 is a voltage conversion chip, which is type TLV 62565.

The SIMCard module 117 provides network services for the wireless communication module 112, solves the problem that the novel circuit board cannot be wirelessly transmitted, and realizes wireless transmission of the novel circuit board.

The level conversion unit 119 enables signals across voltage domains to be directly connected, so that the problem that signals cannot be directly transmitted in different voltage domains is solved, and normal operation of the circuit board is realized.

The level conversion unit 119 may be a level conversion chip.

The wireless communication module 112 is connected to the processor 111, and after the processor 111 transmits the data to the wireless communication module 112, the wireless communication module 112 transmits the data to the terminal. Because the NBIoT module is constructed in the cellular network, and can be directly deployed in the GSM network, the UMTS network, or the LTE network, and the NBIoT module has the characteristics of low power consumption and relatively high signal penetration capability, when some internet of things devices with low-frequency data transmission need to be used, the NBIoT module can be selected as the wireless communication module 112 for wireless communication because the power consumption and the signal penetration capability need to be considered.

For example, in a smart community product, when a water pressure sensor, a liquid level sensor, a flow sensor and a water sensor are used, since the sensors basically only need to report received data, long-time online or remote control is not needed, and only the problems of power consumption and signal penetration capacity need to be considered, NBIoT is mostly adopted as a network access mode.

Example 3

This embodiment is a specific embodiment of the first circuit board 110, fig. 9 is a block diagram of a structure of the first circuit board according to the embodiment of the present invention, as shown in fig. 9, the first circuit board includes a processor 111, a wireless communication module 112, a storage unit 113, a voltage stabilizing unit 114, a first voltage converting unit 115, and a SIMCard module 117. The processor 111 is connected to the wireless communication module 112, the memory unit 113 is connected to the processor 111, the voltage regulator unit 114 is connected to the processor 111, the first voltage converter unit 115 is connected to the wireless communication module 112, and the SIMCard module 117 is directly connected to the wireless communication module 112.

Wherein, processor 111 is the singlechip, and its model is STM32G071CBU 6.

The wireless communication module 112 is a 2G module, which is M26 or M25.

The first voltage converting unit 115 is a voltage converter, which is type TLV 62565.

The voltage regulator unit 114 is a linear voltage regulator, which has a model number LP 5907.

The storage unit 115 is a memory of type W25X20 CL.

Through being connected with processor 111 through wireless communication module 112, in actual operation, because NBIoT can not keep the long-time online of thing networking equipment, so just need use 2G module as wireless communication module 112, solved the NBIoT module and can not carry out the problem of long-time online, realized the long-time online monitoring of thing networking equipment.

For example, when using intelligent devices such as remote controls including a lamp control device, a smart electric meter, and a power distribution cabinet, the devices need to receive and transmit data, and also need internet of things devices to receive data transmitted by the intelligent devices online for a long time, so that the background can control the devices in real time, and therefore the 2G module with high transmission efficiency needs to be used as the wireless communication module 112 for wireless communication.

Example 4

The present embodiment is a specific embodiment of the first circuit board 110, fig. 10 is a block diagram eight of the first circuit board according to an embodiment of the present invention, as shown in fig. 10, the first circuit board 110 includes a processor 111, a wireless communication module 112, a voltage stabilizing unit 114 and a first voltage stabilizing unit 118, the processor 111 is connected to the wireless communication module 112, the voltage stabilizing unit 114 is connected to the processor 111, and the first voltage stabilizing unit 118 is connected to the wireless communication module 112.

Wherein, processor 111 is the singlechip, and its model is STM32G071CBU 6.

The wireless communication module 112 is a Lora module, which has the type SX1278_ LSD4RF-2F717N 30.

The voltage stabilizing unit 114 and the first voltage stabilizing unit 118 are both linear voltage stabilizing chips, and the model thereof is LP 5907.

In the case that the operator network signal is weak, the NBIoT module and the 2G module cannot provide network services through the operator network, and at this time, the Lora module may be used as the wireless communication module 112, and the Lora module may be connected to a large number of terminal devices, so that power consumption is relatively low, and the Lora module may be used as a wireless transmission mode when no operator provides services.

Through the Lora module as wireless communication module 112, when having solved that the operator network can't provide network service, just can carry out wireless communication through the Lora module, realize the wireless communication function of novel circuit board.

Example 5

The present embodiment is a specific embodiment of the second circuit board 120, fig. 11 is a second schematic diagram of the second circuit board according to the embodiment of the present invention, as shown in fig. 11, the second circuit board 120 includes a first positioning unit 121 and a function sensor interface 124, the first positioning unit 121 is connected to the first circuit board 110, and the processor 111 is connected to the function sensor interface 124.

Fig. 12 is a block diagram of a second circuit board according to an embodiment of the present invention, and as shown in fig. 12, the second circuit board further includes a DEBUG interface 125, a UART interface 126, an I2C interface 127, a second voltage conversion unit 128, and an operational amplification unit 129.

Wherein, the first positioning element 121 is connected to the first circuit board 110.

The functional sensor interface 124 is connected to the processor 111, and the functional sensor interface 124 can receive data of the functional sensor 122 and transmit the data to the processor 111.

The functional sensor interface 124 is configured to connect with the functional sensor 122, and the functional sensor interface 124 is configured to receive data detected by the functional sensor 122 and transmit the data to the processor 111.

The functional sensor interface 124 is connected with the processor 111, and the functional sensor interface 124 can be used for installing various functional sensors 122, so that the problems that development difficulty is increased, development cost is increased and debugging is complex due to the fact that various Internet of things devices are developed in different application scenes of the Internet of things devices are solved, and the technical effects of reducing development cost and being simple to debug are achieved.

The DEBUG interface 125 is connected to the processor 111 of the first circuit board 110, and the DEBUG interface 125 is disposed on the second circuit board 120. When equipment debugging is needed, the first circuit board 110 can be debugged through the DEBUG interface 125.

The UART interface 126 is led out from the processor 111 of the first circuit board 110, and the UART interface 126 is disposed on the second circuit board 120. When the processor 110 needs to convert the parallel input signal into the serial input signal, the UART chip needs to be connected through the UART interface 126.

The I2C interface 127 is led out from the processor 111 of the first circuit board 110, and the I2C interface 127 is disposed on the second circuit board 120. When the processor 110 needs to transmit data in a synchronous serial manner, the I2C interface 127 needs to be connected with the I2C bus for data transmission.

The second circuit board 120 further includes a second voltage conversion unit 128, the second voltage conversion unit 128 is connected to the processor 111 and the functional sensor interface 124 of the first circuit board 110, respectively, and the second voltage conversion unit 128 is configured to convert the voltage input to the second circuit board 120, and when the input voltage is higher, the components of the circuit board may be damaged, so that the voltage reduction conversion unit is required to convert the high voltage input to the second circuit board 120 into the low voltage to protect the circuit devices of the second circuit board 120.

The second voltage conversion unit 128 is a voltage conversion chip.

The second circuit board 120 further includes an operational amplifier unit 129, the operational amplifier unit 129 is connected to the processor 111 and the functional sensor interface 124 of the first circuit board 110, and the processor 111 amplifies the signal through the operational amplifier unit 129 and transmits the amplified signal to the functional sensor interface 124.

The operational amplifier 129 may be an operational amplifier chip.

All or part of the processes in the above embodiments can be understood by those in the art, and the technical features of the above embodiments can be arbitrarily combined, so that for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, however, as long as there is no contradiction between the combinations of the technical features, the combinations of the technical features should be considered as the scope of the present description.

The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (10)

1. A novel circuit board, comprising:

the first circuit board comprises a processor and a wireless communication module, and the processor is connected with the wireless communication module;

the second circuit board comprises a first positioning element and a function sensor, the first circuit board is connected with the first positioning element, and the processor is connected with the function sensor.

2. The novel circuit board of claim 1, wherein the second circuit board further comprises at least one second positioning element, and the second positioning element is at least obliquely and symmetrically arranged on the second circuit board.

3. The novel circuit board of claim 1, wherein the first circuit board further comprises a memory unit, the memory unit being coupled to the processor.

4. The novel circuit board of claim 1, wherein the wireless communication module comprises NBIoT, 2G, 4G, or Lora.

5. The novel circuit board of claim 1, wherein the first circuit board further comprises a voltage regulator unit, the voltage regulator unit being connected to the processor.

6. The novel circuit board of claim 1, wherein the first circuit board further comprises a first voltage conversion unit, and the first voltage conversion unit is connected with the wireless communication module.

7. The novel circuit board of claim 1, wherein the first circuit board further comprises a voltage protection unit, the voltage protection unit being connected to the processor.

8. The novel circuit board of claim 1, wherein the second circuit board further comprises a reset unit, the reset unit being connected to the processor.

9. The novel circuit board of claim 1, wherein the second circuit board further comprises a second voltage conversion unit, the second voltage conversion unit being connected to the processor.

10. The novel circuit board of claim 1, wherein the second circuit board further comprises a thermal unit control module, the thermal unit control module being connected to the processor.

Images