CN217179803U - Temperature sensor detection circuit and detection device with same - Google Patents
Temperature sensor detection circuit and detection device with same Download PDFInfo
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- CN217179803U CN217179803U CN202220970845.3U CN202220970845U CN217179803U CN 217179803 U CN217179803 U CN 217179803U CN 202220970845 U CN202220970845 U CN 202220970845U CN 217179803 U CN217179803 U CN 217179803U
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Abstract
The utility model discloses a temperature sensor detection circuitry and have its detection device, wherein the circuit is used for detecting temperature sensor's output, include: the device comprises a first power supply, a data acquisition module, a parallel driving module and a second power supply; the first power supply is connected to the parallel driving module, and the second power supply is connected with the temperature sensor; the data acquisition module is connected with the parallel driving module through a control signal line, and the parallel driving module is connected with the temperature sensor through a clock signal line and a data signal line; the parallel driving module comprises a voltage conversion unit for performing voltage conversion on the signal on one side of the first power supply and the signal on one side of the second power supply, and two voltage input ends of the voltage conversion unit are respectively connected with the first power supply and the second power supply. The utility model provides a temperature sensor detection circuitry can adapt to voltage and speed demand better for detection speed prevents to break down.
Description
Technical Field
The utility model relates to a detect technical field, especially relate to a temperature sensor detection circuitry and have its detection device.
Background
Temperature sensor is usually applied to under the temperature environment that changes, because certain deviation in detection often can be produced to the technological limit, in order to check whether this kind of deviation accords with the rule of leaving the factory, need provide a temperature sensor detection circuitry and obtain the output of the temperature sensor that awaits measuring, come the further judgement of supplementary staff.
The temperature sensor detection circuit provided in the prior art is generally implemented by adopting a single chip microcomputer and an IIC (inter-integrated circuit) extension chip, and the single chip microcomputer establishes data communication with the temperature sensor through the IIC extension chip, so that the output condition of the temperature sensor under a given condition is obtained. However, the level requirements of the single chip microcomputer, the IIC expansion chip and the temperature sensor are different, and particularly for the temperature sensor, a low-level working environment needs to be constructed to normally work, so that the technical scheme is easy to increase the detection error. In addition, considering the signal transmission speed requirement of the temperature sensor, the situation of data scrambling and dislocation and the like is very easy to be caused when data is transmitted by only using single-wire communication in the prior art, and the actual quality of the temperature sensor cannot be detected.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a temperature sensor detection circuitry to circuit both ends level standard mismatch leads to the unable work of the temperature sensor that awaits measuring under normal condition among the solution prior art, and the unable adaptation temperature sensor speed demand of circuit leads to technical problem such as the indiscriminate sign indicating number of data, dislocation.
An object of the utility model is to provide a temperature sensor detection device.
In order to realize one of the above objects of the present invention, an embodiment of the present invention provides a temperature sensor detection circuit for detecting an output of a temperature sensor, including: the device comprises a first power supply, a data acquisition module, a parallel driving module and a second power supply; the first power supply is connected to the parallel driving module, and the second power supply is connected with the temperature sensor; the data acquisition module is connected with the parallel driving module through a control signal line, and the parallel driving module is connected with the temperature sensor through a clock signal line and a data signal line; the parallel driving module comprises a voltage conversion unit for performing voltage conversion on the signal on one side of the first power supply and the signal on one side of the second power supply, and two voltage input ends of the voltage conversion unit are respectively connected with the first power supply and the second power supply.
As a further improvement of an embodiment of the present invention, the parallel driving module is used for receiving data signal input and clock signal input, and correspondingly generating feedback signal output, and is used for receiving control signal input, and correspondingly generating data signal output and clock signal output; the voltage conversion unit is used for converting data signal input and clock signal input under the second power standard into data signal input and clock signal input under the first power standard, and is used for converting data signal output and clock signal output under the first power standard into data signal output and clock signal output under the second power standard.
As an embodiment of the present invention, the parallel driving module further comprises an isolation protection module, the isolation protection module comprises a control signal terminal, a data signal terminal and a clock signal terminal, the control signal terminal is connected to the data acquisition module, the data signal terminal is connected to the clock signal terminal, and the voltage conversion unit is connected to the data signal terminal.
As a further improvement of an embodiment of the present invention, the temperature sensor detection circuit further includes, set up in the parallel drive module with branch road gating unit between the temperature sensor, branch road gating unit including be connected to the gating control end of data acquisition module, and configure to as basis the gating control signal of gating control end, control the parallel drive module with connect or break off between the temperature sensor.
As a further improvement of an embodiment of the present invention, the temperature sensor is provided in plurality behind the parallel driving module, and at least forms a first sensor set, the first sensor set includes a first temperature sensor and a second temperature sensor, and the voltage conversion unit includes a first conversion module and a second conversion module; the first temperature sensor is connected with a first conversion clock end and a first conversion data end of the first conversion module through a first temperature clock end and a first temperature data end respectively, and the second temperature sensor is connected with a second conversion clock end and a second conversion data end of the second conversion module through a second temperature clock end and a second temperature data end respectively.
As a further improvement of an embodiment of the present invention, the temperature sensor is further formed with a second sensor set after the parallel driving module, the second sensor set includes a third temperature sensor corresponding to the first temperature sensor, and a fourth temperature sensor corresponding to the second temperature sensor; the third temperature sensor is connected with the first conversion clock end and the first conversion data end through a third temperature clock end and a third temperature data end respectively, and the fourth temperature sensor is connected with the second conversion clock end and the second conversion data end through a fourth temperature clock end and a fourth temperature data end respectively.
As a further improvement of an embodiment of the present invention, the temperature sensor detection circuit further includes a first branch gating module disposed between the first conversion module, the second conversion module, and the first temperature sensor and the second temperature sensor, and a second branch gating module disposed between the first conversion module, the second conversion module, and the third temperature sensor and the fourth temperature sensor; the first controlled end of the first branch gating module is connected with the first gating control end of the data acquisition module and is configured to selectively connect the first temperature sensor and the second temperature sensor to the first conversion module and the second conversion module respectively; the second controlled end of the second branch gating module is connected with the second gating control end of the data acquisition module and is configured to selectively connect the third temperature sensor and the fourth temperature sensor to the first conversion module and the second conversion module respectively.
As a further improvement of an embodiment of the present invention, the first branch gating module includes a first clock switch, a first data switch, a second clock switch and a second data switch; the first clock switch is arranged between the first temperature clock end and the first conversion clock end, and the first data switch is arranged between the first temperature data end and the first conversion data end; the second clock switch is disposed between the second temperature clock terminal and the second conversion clock terminal, and the second data switch is disposed between the second temperature data terminal and the second conversion data terminal.
As a further improvement of an embodiment of the present invention, the first clock switch, the first data switch, the second clock switch and the second data switch are configured as a ganged switch.
As a further improvement of an embodiment of the present invention, the temperature sensors in the first sensor set are arranged in an array.
In order to achieve the above object, an embodiment of the present invention provides a temperature sensor detecting device, including any one of the above technical solutions.
Compared with the prior art, the utility model provides a temperature sensor detection circuitry realizes the parallel input/output to temperature sensor through parallel drive module, through configuring data signal and clock signal into through two signal line synchronous transmission, and is provided with the voltage conversion unit in parallel drive module and carries out the conversion of both sides voltage. So, work demands such as the voltage that can adapt to temperature sensor better and transmission speed for temperature sensor's detection rate prevents simultaneously that temperature sensor from breaking down in the testing process.
Drawings
Fig. 1 is a schematic structural diagram of a temperature sensor detection device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a temperature sensor detection circuit cooperating with a temperature sensor according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a voltage conversion unit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a specific example of a temperature sensor detection circuit according to an embodiment of the present invention, which is cooperated with a temperature sensor.
Detailed Description
The present invention will be described in detail below with reference to specific embodiments shown in the drawings. However, these embodiments are not intended to limit the present invention, and structural, methodical, or functional changes that may be made by one of ordinary skill in the art based on these embodiments are all included in the scope of the present invention.
It should be noted that the term "comprises/comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
The working principle of the temperature sensor mainly utilizes the principle that electronic components (such as a CMOS (Complementary Metal Oxide Semiconductor)) have different magnitudes or strengths of electric signals such as voltage, current or resistance under different environments, so that the electric signals can be converted into digital signals through receiving the electric signals and subjected to certain operation processing, and a pre-estimated value of the current environment of the temperature sensor can be obtained. In the process of manufacturing the temperature sensor, due to process limitations, the output of the temperature sensor is often unstable or has a large deviation, the temperature sensor cannot meet a predetermined allowable error, and cannot output a relatively accurate temperature value, so that various environmental temperatures cannot be accurately grasped, careless mistakes are produced during manufacturing, and/or scientific experiments cannot achieve expected effects. Accordingly, it is desirable to provide a temperature sensor detection circuit and a detection device having the same.
It should be noted that the detection is not limited to a specific scenario, and any application scenario that needs to obtain the output of the temperature sensor can be covered by the objective scenario of the present invention. For example, the utility model provides a technical scheme can be used for dispatching from the factory to temperature sensor or the inspection when accepting, specifically can be to the inspection of temperature sensor send-receive signal ability, and/or measure the inspection of ambient temperature matter to temperature sensor, and/or receive the inspection of driving force to temperature sensor, the utility model provides a technical scheme also can be used for monitoring the operating condition in temperature sensor place return circuit in the use. Of course, other uses are possible and are not intended to be exhaustive.
As shown in fig. 1, an embodiment of the present invention provides a temperature sensor detecting device 100, which includes a temperature sensor detecting circuit for detecting an output of a temperature sensor 200. In a specific embodiment, the temperature sensor detecting device 100 may include an upper computer 1, and the upper computer 1 may be configured to receive and store detection data from the temperature sensor detecting circuit, may be configured to receive a user instruction or run an internal program to control an operation of the temperature sensor detecting circuit, and may also be configured to receive external data and write the external data into the temperature sensor detecting circuit. The upper computer 1 may be a general-purpose computer such as a personal computer, a server, or a single chip microcomputer, or may be an industrial personal computer, an industrial computer, or the like having a special configuration.
As shown in fig. 1 and 2, an embodiment of the present invention further provides a temperature sensor detection circuit, which can be disposed in the temperature sensor detection device 100, and can be specifically disposed at the rear end of the upper computer 1, so as to receive the control of the upper computer 1, control the output of the temperature sensor 200, and transmit data. Of course, the utility model discloses do not restrict the concrete scene of using of temperature sensor detection circuitry, the utility model provides a technical scheme can be applied to under any device, system or the scene that need detect temperature sensor's output alternatively.
The temperature sensor detection circuit comprises a first power supply 31, a data acquisition module 4, a parallel driving module 5 and a second power supply. The first power supply 31 is connected to the parallel driving module 5 and is used for supplying power for the operation of the parallel driving module 5; the second power source 32 is connected to the temperature sensor 200 for supplying power for the operation of the temperature sensor 200. Since the temperature sensor 200 has a high precision characteristic, its operating voltage is generally lower than that of the data acquisition module 4, and thus in one embodiment, the output voltage of the second power supply 32 is lower than that of the first power supply 31.
Further, the parallel driving module 5 is arranged between the data acquisition module 4 and the temperature sensor 200, on one hand, the data acquisition module 4 is connected with the parallel driving module through a control signal line, so as to establish an exchange relationship of input and output of control signals; on the other hand, the parallel driving module 5 is connected to the temperature sensor 200 through a clock signal line and a data signal line, thereby establishing an exchange relationship of the clock signal and the data signal. Thus, a two-wire signal transmission architecture can be established at least between the parallel driving module 5 and the temperature sensor 200, so as to achieve the technical effects of high transmission speed, stable transmission process and difficulty in generating messy codes. Further, the two-wire signal transmission method according to the present embodiment may be transmission using an I2C bus (Inter-Integrated Circuit, two-wire serial bus). To control signal's transmission mode, the utility model discloses do not specifically prescribe a limit, can be that the two-way data transmission who adopts general IO port to carry out single line or double-line.
In an embodiment, the parallel driving module 5 further includes a voltage converting unit 51 for performing voltage conversion on the signal on the side of the first power supply 31 and the signal on the side of the second power supply 32, and is specifically configured such that two voltage input terminals of the voltage converting unit 51 are respectively connected to the first power supply 31 and the second power supply 32 and respectively receive the output first voltage VCC1 and the output second voltage VCC2 (corresponding to fig. 3 and fig. 4). Because first power 31 connects the parallel driver module and supplies power for its data transmission, second power 32 connects temperature sensor 200 and supplies power for its data transmission, the voltage conversion unit 51 that increases can regard the voltage that first voltage source 31 and second voltage source 32 exported respectively as the reference voltage of both sides, the unmatched problem of effective balanced both sides voltage, cooperation double-line signal transmission, can further promote the holistic validity in the temperature sensor testing process, prevent the condition of data acquisition module 4 one side undervoltage and temperature sensor 200 one side overvoltage, and guarantee data signal and clock signal synchronous transmission all the time.
For the specific functions of the parallel driving module 5, in one embodiment, the parallel driving module 5 is configured to receive a data signal input from the data signal line, receive a clock signal input from the clock signal line, and correspondingly form a feedback signal output through the control signal line; the parallel driving module 5 is further configured to receive a control signal input from the control signal line, and correspondingly form a data signal output through the data signal line, and correspondingly form a clock signal output through the clock signal line. Therefore, the two-wire bidirectional data transmission can be realized, the action of the temperature sensor 200 is controlled by the mutual cooperation of the clock signal and the data signal according to the control signal of the data acquisition module 4, and the data signal and the clock signal output by the temperature sensor 200 form feedback to the data acquisition module 4 so as to realize the detection function of the temperature sensor 200.
As for the specific functions of the voltage conversion unit 51, in one embodiment, the voltage conversion unit 51 is configured to convert the data signal input under the second power standard transmitted through the data signal line from the side of the temperature sensor 200 into the data signal input under the first power standard, feed the data signal input to the side of the data acquisition module 4, and convert the clock signal input under the second power standard transmitted through the clock signal line from the side of the temperature sensor 200 into the clock signal input under the first power standard, and feed the clock signal input under the first power standard to the data acquisition module 4; the voltage conversion unit 51 is further configured to convert a data signal output under the first power standard from the data acquisition module 4 side into a data signal output under the second power standard, transmit the data signal output to the temperature sensor 200 side through the data signal line, convert a clock signal output under the first power standard from the data acquisition module 4 side into a clock signal output under the second power standard, and transmit the clock signal output to the temperature sensor 200 side through the clock signal line. Therefore, the level matching in the two-wire two-way transmission process can be ensured, and overvoltage on one side of the temperature sensor 200 or undervoltage on one side of the data acquisition module 4 can be prevented.
In addition, regarding the connection relationship between the first power supply 31 and the data acquisition module 4, the data acquisition module 4 in the temperature sensor detection device in one embodiment shown in fig. 1 is disposed in the upper computer 1 and connected to the parallel driving module 5, and based on this, the power supply of the data acquisition module 4 can be completed by the upper computer 1 without connecting to the first power supply 31. In the embodiment shown in fig. 2, the data acquisition module 4 in the temperature sensor detection device is provided independently, so that the first power supply 31 is required to supply power for the operation. On this basis, the embodiment provided in fig. 1 may be configured to work with the data acquisition module 4 supplied with power by the first power supply 31, or may be configured to work with the first power supply 31 supplying power to the upper computer 1, and the upper computer 1 further supplies power to the data acquisition module 4, so that an indirect connection relationship between the two is formed.
Further, in an embodiment, the temperature sensor detection circuit further includes a branch gating unit 6, the branch gating unit 6 is disposed between the parallel driving module 5 and the temperature sensor 200, and includes a gating control terminal connected to the data acquisition module 4, and the branch gating unit 6 is configured to control the parallel driving module 5 and the temperature sensor 200 to establish a connection relationship or disconnect the connection relationship according to a gating control signal of the gating control terminal. Therefore, data exchange between the data acquisition module 4 and the temperature sensor 200 can be controlled in a unified manner through the branch gating unit 6, and the on-off of the branch gating unit 6 is determined by the data acquisition module 4, so that a user can write a gating control instruction into the data acquisition module 4 through the upper computer 1 or other modes to realize automatic time sequence control of detection of the temperature sensor.
As for the position arrangement relationship between the parallel driving module 5 and the branch gating unit 6, fig. 2 shows an embodiment in which the two are separately arranged as a part of the temperature sensor detection circuit, but it does not affect the temperature sensor detection device shown in fig. 1, and the parallel driving module 5 and the branch gating unit 6 are arranged on the same circuit substrate for packaging, or can be interpreted as being arranged in the same entity device, and the expected technical effects can be achieved as well.
In one embodiment, a plurality of temperature sensors 200 are disposed behind the parallel driving module 5, and collectively serve as the sensor group 20 to be measured, and each temperature sensor 200 in the sensor group 20 to be measured is respectively and sequentially connected to the parallel driving module 5 and the voltage conversion unit 51 therein, and the data acquisition module 4, so as to complete data transmission in parallel. In the embodiment including the branch gating unit 6, the parallel data transmission between the temperature sensor 200 and the data acquisition module 4 may be performed by selecting at least one of the data transmission and the data transmission under the control of the data acquisition module 4 according to the on/off state of the branch gating unit 6. Meanwhile, the data acquisition module 4 may also control the branch gating unit 6 to switch the temperature sensors 200 connected to the data acquisition module 4 in sequence according to a preset time sequence, complete data acquisition of different temperature sensors 200 at different times, and complete batch data acquisition of a large number of temperature sensors 200 in the sensor group to be detected 20 in a traversal manner. In one embodiment, the temperature sensors 200 in the sensor group under test 20 may have any type of array arrangement, and may be a single column or a single row.
Referring to fig. 2 and 3, in one embodiment, the sensor group under test 20 includes at least a first sensor set 21, or the temperature sensors 200 form at least the first sensor set 21. Specifically, the first sensor set 21 includes a first temperature sensor 211 and a second temperature sensor 212, and correspondingly, the voltage conversion unit 51 may include a first conversion module 511 and a second conversion module 512 for performing voltage conversion on the first temperature sensor 211 and the second temperature sensor 212, respectively. Therefore, the minimum type selection requirement of the voltage conversion module can be met, and the effect and the stability of voltage conversion are kept. On the one hand, in the embodiment where the voltage conversion unit 51 is configured to be sufficient to implement three-channel or higher conversion, the first conversion module 511 and the second conversion module 512 may also be the same or partially the same entity structure; on the other hand, on this basis, the present invention certainly does not exclude the technical solution of setting more temperature sensors 200 in the first sensor set 21 or the sensor group to be measured 20, and the number of the temperature sensors 200 may also be greater than or equal to the number of the voltage conversion modules in the voltage conversion unit 51.
In the connection relation, as shown in fig. 2 to 4, the first temperature sensor 211 is connected to the first conversion clock terminal 5111 of the first conversion module 511 through the first temperature clock terminal 2111, and the connection between the two terminals can be specifically completed through the clock signal line; the first temperature sensor 211 is connected to the first conversion data terminal 5112 of the first conversion module 511 through the first temperature data terminal 2112, and the connection between the two ports can be specifically completed through the data signal line. Similarly, the second temperature sensor 212 is correspondingly connected to the second conversion clock terminal 5121 and the second conversion data terminal 5122 of the second conversion module 512 via the second temperature clock terminal 2121 and the second temperature data terminal 2122, respectively. Thus, a two-wire, bi-directional, parallel and adaptive level transfer to at least two temperature sensors within the first set of sensors 21 can be achieved.
In a specific embodiment, the plurality of temperature sensors in the first sensor set 21 may be arranged in an array, and further, each sensor set in the sensor group to be detected 20 may include the same number of temperature sensors 200, for example, 15 temperature sensors 200, so that, in cooperation with other front components, 15 paths of parallel detection can be realized, and the detection efficiency of the temperature sensors is improved. Of course, the specific number can be adjusted according to the needs of those skilled in the art, and can be 4-way or 8-way.
In one embodiment, the sensor group under test 20 further includes a second sensor set 22, or the temperature sensor 200 further forms the second sensor set 22 behind the parallel driving module 5. Specifically, the second sensor set 22 includes a third temperature sensor 221 corresponding to the first temperature sensor 211, and a fourth temperature sensor 222 corresponding to the second temperature sensor 221, and further, the third temperature sensor 221 is connected to the first conversion clock terminal 5111 and the first conversion data terminal 5112 through a third temperature clock terminal 2211 and a third temperature data terminal 2212, respectively, and the fourth temperature sensor 222 is connected to the second conversion clock terminal 5121 and the second conversion data terminal 5122 through a fourth temperature clock terminal 2221 and a fourth temperature data terminal 2222, respectively. In this way, the temperature sensors in the first sensor set 21 and the second sensor set 22 corresponding to each other multiplex the same voltage conversion module, which can reduce the circuit cost. Moreover, when the first sensor set 21 and the second sensor set 22 are configured to have the same array arrangement, and the sensors corresponding to each other on the two sensor sets have similar type selection or parameter configuration, the common transmission line and the voltage conversion module do not affect the detection effect of the sensors.
In one embodiment, as shown in fig. 2 and 3, the parallel driving module 5 further includes an isolation protection module 52 for isolating the transmission signals and preventing crosstalk. The isolation protection module 52 includes a control signal terminal, a data signal terminal, and a clock signal terminal, the control signal terminal is connected to the data acquisition module 4, the connection mode may be through the control signal line connection, and the data signal terminal and the clock signal terminal are connected to the voltage conversion unit 51, so as to transmit the clock signal under the first power standard and the data signal under the first power standard.
When the voltage conversion unit 51 includes a plurality of voltage conversion modules, the data signal terminal and the clock signal terminal in the isolation protection module 52 are matched with the ports for receiving the data signal and the clock signal on the voltage conversion modules. For example, the clock signal terminal includes an SCL1.1 terminal and an SCL2.1 terminal shown in fig. 3, and the data signal terminal includes an SDA1.1 terminal and an SDA2.1 terminal shown in fig. 3, the first conversion module 511 may also include the SCL1.1 terminal and the SDA1.1 terminal correspondingly, and the second conversion module 512 may also include the SCL2.1 terminal and the SDA2.1 terminal correspondingly, and a connection relationship is established correspondingly, so as to achieve the above technical effects.
In addition, the control signal terminal may include an IO1 terminal, an IO2 terminal, an IO3 terminal, an IO4 terminal, and the like shown in fig. 3, at least the IO1 terminal is used to correspond to the first conversion module 511 and transmit the control signal with the data acquisition module 4, and at least the IO3 terminal is used to correspond to the second conversion module 512 and transmit the control signal with the data acquisition module 4. Of course, in the embodiment where the control signal is also configured as a two-wire bidirectional parallel transmission, the IO1 terminal and the IO2 terminal may correspond to the first conversion module 511, and the IO3 terminal and the IO4 terminal may correspond to the second conversion module 512.
As shown in fig. 2 to fig. 4, in an embodiment, the temperature sensor detection circuit may further include a first branch gating module 61 and a second branch gating module 62, which may be included in the branch gating unit 6, where the branch gating unit 6 may correspondingly include a plurality of branch gating modules, and control states of different sensors (sets) accessing the data acquisition module 4 according to signals of the same or different gating control terminals 40. Of course, in the temperature sensor detection circuit in which the concept of the branch gating unit 6 does not exist, the first branch gating module 61, the second branch gating module 62, and other branch gating modules may be proposed as new concepts.
The first branch gating module 61 is disposed between the first conversion module 511 and the first temperature sensor 211, and is disposed between the second conversion module 512 and the second temperature sensor 212, so that the first controlled terminal 601 of the first branch gating module 61 is connected to the first gating control terminal 401 of the data acquisition module 4, and is configured to selectively connect the first temperature sensor 211 to the first conversion module 511, and connect the second temperature sensor 212 to the second conversion module 512. The second branch gating module 62 is disposed between the first conversion module 511 and the third temperature sensor 221, and disposed between the second conversion module 512 and the fourth temperature sensor 222, so that the second controlled terminal 602 of the second branch gating module 62 is connected to the second gating control terminal 402 of the data acquisition module 4, and is configured to selectively connect the third temperature sensor 221 to the first conversion module 511, and connect the fourth temperature sensor 222 to the second conversion module 512.
In this way, the connection relationship between the first sensor set 21 and the data acquisition module 4 and the connection relationship between the second sensor set 22 and the data acquisition module 4 can be controlled separately, and in one embodiment, the gating control signal is configured to control one of the sensor sets to access the data acquisition module 4 at a time, and perform parallel detection on sensor detection paths formed by all sensors included in the sensor set respectively. As previously described, the sensor detection path is preferably 15 paths.
With respect to the specific structure, in one embodiment, the first branch gate module 61 includes a first clock switch 611, a first data switch 612, a second clock switch 613, and a second data switch 614. The first clock switch 611 is disposed between the first temperature clock end 2111 and the first conversion clock end 5111, and the first data switch 612 is disposed between the first temperature data end 2112 and the first conversion data end 5112; the second clock switch 613 is disposed between the second temperature clock end 2121 and the second switching clock end 5121, and the second data switch 614 is disposed between the second temperature data end 2122 and the second switching data end 5122. In this way, the switching adjustment is performed according to the gate control signal received by the first controlled terminal 601 and output from the first gate control terminal 401.
In particular, the first clock switch 611, the first data switch 612, the second clock switch 613 and the second data switch 614 may be configured as ganged switches, thereby forming a unified control of the access status of all temperature sensors in the first set of sensors 21.
Of course, the second branch gating module 62 and other branch gating modules may also include the above-described structural configuration. Meanwhile, the number of the data switches and the number of the clock switches can be correspondingly adjusted according to the number of the temperature data ends and the number of the temperature clock ends. Of course, the present invention is not limited to the data switch and the clock switch being disposed on the clock signal line and the data signal line, and one of them can be selected by those skilled in the art according to the requirement.
To sum up, compare with prior art, the utility model provides a temperature sensor detection circuit realizes the parallel input/output to temperature sensor through parallel driver module, through configuring data signal and clock signal into through two signal line synchronous transmission, and is provided with the voltage conversion unit in parallel driver module and carries out the conversion of both sides voltage. So, work demands such as the voltage that can adapt to temperature sensor better and transmission speed for temperature sensor's detection rate prevents simultaneously that temperature sensor from breaking down in the testing process.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the technical solutions in the embodiments can also be combined appropriately to form other embodiments understood by those skilled in the art.
The above list of details is only for the practical implementation of the present invention, and they are not intended to limit the scope of the present invention, and all equivalent implementations or modifications that do not depart from the technical spirit of the present invention should be included in the scope of the present invention.
Claims (11)
1. A temperature sensor detection circuit for detecting an output of a temperature sensor, comprising: the device comprises a first power supply, a data acquisition module, a parallel driving module and a second power supply;
the first power supply is connected to the parallel driving module, and the second power supply is connected with the temperature sensor; the data acquisition module is connected with the parallel driving module through a control signal line, and the parallel driving module is connected with the temperature sensor through a clock signal line and a data signal line;
the parallel driving module comprises a voltage conversion unit for performing voltage conversion on the signal on one side of the first power supply and the signal on one side of the second power supply, and two voltage input ends of the voltage conversion unit are respectively connected with the first power supply and the second power supply.
2. The temperature sensor detecting circuit according to claim 1, wherein the parallel driving module is configured to receive a data signal input and a clock signal input, and generate a feedback signal output in response thereto, and to receive a control signal input, and generate a data signal output and a clock signal output in response thereto;
the voltage conversion unit is used for converting data signal input and clock signal input under the second power standard into data signal input and clock signal input under the first power standard, and is used for converting data signal output and clock signal output under the first power standard into data signal output and clock signal output under the second power standard.
3. The temperature sensor detecting circuit according to claim 1, wherein the parallel driving module further comprises an isolation protection module, the isolation protection module comprises a control signal terminal, a data signal terminal and a clock signal terminal, the control signal terminal is connected to the data acquisition module, and the data signal terminal and the clock signal terminal are connected to the voltage conversion unit.
4. The temperature sensor detecting circuit according to claim 1, further comprising a branch gating unit disposed between the parallel driving module and the temperature sensor, wherein the branch gating unit includes a gating control terminal connected to the data acquisition module and is configured to control connection or disconnection between the parallel driving module and the temperature sensor according to a gating control signal of the gating control terminal.
5. The temperature sensor detection circuit according to claim 1, wherein the temperature sensors are provided in plurality behind the parallel driving module and form at least a first sensor set, the first sensor set includes a first temperature sensor and a second temperature sensor, and the voltage conversion unit includes a first conversion module and a second conversion module;
the first temperature sensor is connected with a first conversion clock end and a first conversion data end of the first conversion module through a first temperature clock end and a first temperature data end respectively, and the second temperature sensor is connected with a second conversion clock end and a second conversion data end of the second conversion module through a second temperature clock end and a second temperature data end respectively.
6. The temperature sensor detection circuit according to claim 5, wherein the temperature sensor is further formed with a second sensor set behind the parallel drive module, the second sensor set including a third temperature sensor corresponding to the first temperature sensor and a fourth temperature sensor corresponding to the second temperature sensor;
the third temperature sensor is connected with the first conversion clock end and the first conversion data end through a third temperature clock end and a third temperature data end respectively, and the fourth temperature sensor is connected with the second conversion clock end and the second conversion data end through a fourth temperature clock end and a fourth temperature data end respectively.
7. The temperature sensor detecting circuit according to claim 6, further comprising a first branch gating module disposed between the first and second converting modules and the first and second temperature sensors, and a second branch gating module disposed between the first and second converting modules and the third and fourth temperature sensors;
the first controlled end of the first branch gating module is connected with the first gating control end of the data acquisition module and is configured to selectively connect the first temperature sensor and the second temperature sensor to the first conversion module and the second conversion module respectively;
the second controlled end of the second branch gating module is connected with the second gating control end of the data acquisition module and is configured to selectively connect the third temperature sensor and the fourth temperature sensor to the first conversion module and the second conversion module respectively.
8. The temperature sensor detection circuit of claim 7, wherein the first branch gating module comprises a first clock switch, a first data switch, a second clock switch, and a second data switch;
the first clock switch is arranged between the first temperature clock end and the first conversion clock end, and the first data switch is arranged between the first temperature data end and the first conversion data end; the second clock switch is disposed between the second temperature clock terminal and the second conversion clock terminal, and the second data switch is disposed between the second temperature data terminal and the second conversion data terminal.
9. The temperature sensor detection circuit of claim 8, wherein the first clock switch, the first data switch, the second clock switch, and the second data switch are configured as ganged switches.
10. The temperature sensor sensing circuit of claim 5, wherein the temperature sensors of the first set of sensors are arranged in an array.
11. A temperature sensor detection device characterized by comprising the temperature sensor detection circuit according to any one of claims 1 to 10.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115514366A (en) * | 2022-11-15 | 2022-12-23 | 灿芯半导体(成都)有限公司 | Single-rotation dual-drive circuit in temperature sensor and time sequence control optimization method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115514366A (en) * | 2022-11-15 | 2022-12-23 | 灿芯半导体(成都)有限公司 | Single-rotation dual-drive circuit in temperature sensor and time sequence control optimization method thereof |
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