JP2007109185A - Detection sensor and sensor system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detection sensor and a sensor system capable of suppressing mistakes in setting set information from external equipment. <P>SOLUTION: It is decided whether or not copying operation of the set information can be normally performed by matching machine model information or matching set items. When it is not possible, a character/sign (for example, "ERR") indicating that copy cannot be executed is displayed to either a display part 12a or a display part 12b. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a detection sensor and a sensor system, and more particularly to a technique for setting (duplicating) setting information from an external device.

Conventionally, as shown in Patent Document 1 below, a master unit and a plurality of sensor units are connected by an input / output connector, and setting information such as sensitivity setting set in the master unit is transmitted to each sensor unit. Some have a so-called copy function for setting. With such a configuration, there is an advantage that the same setting work need not be performed for each sensor unit, and the setting work can be performed efficiently.
JP 2000-294097 A

  By the way, in the sensor system described above, a copy function may be executed by connecting different types of sensor units to the master unit. The setting items of the sensor unit may differ depending on the model or the like. In such a case, the copy function is not executed because the regular setting cannot be performed. However, in this case, the operator cannot know whether or not the setting information from other sensor units is actually properly set in each sensor unit, and the operation of the sensor unit may be executed in a setting error state. was there.

  The present invention has been completed based on the above-described circumstances, and an object thereof is to provide a detection sensor and a sensor system capable of suppressing setting errors of setting information from an external device. .

As means for achieving the above object, a detection sensor according to the invention of claim 1 is a detection means for detecting a physical quantity change in a detection region, a setting information memory in which its own setting information is set, and the setting information Execution means for executing an operation based on the self setting information set in a memory, receiving means for receiving a transmission signal including external setting information from an external device, and a transmission signal received from the receiving means, A determination means for determining whether or not a normal setting in the setting information memory is possible including external setting information of the same setting item as the setting item of its own setting information, and a normal setting is possible by the determination means If it is determined, the control means for setting the external setting information included in the transmission signal in the setting information memory, and the determination means determined that the normal setting is impossible The case, characterized by comprising a first informing means for performing an informing operation to the outside.
The “detection sensor” of the present invention is, for example, a pressure switch, a photoelectric switch, an ultrasonic switch, a magnetic switch, or a temperature switch, as long as it detects a change in physical quantity and outputs an output signal based on the detection. included.
“Setting information” includes, for example, detection thresholds, response speeds, timers, and the like, but is not limited to those related to detection operations. It may be.

As a more specific configuration of the invention of claim 1,
“The transmission signal includes the external setting information and external setting items corresponding to the external setting information,
The determination means determines whether regular setting is possible based on whether the transmission signal includes external setting information of the same setting item as its own setting item based on the external setting item included in the transmission signal. The detection sensor according to claim 1 may be used.

  According to a second aspect of the present invention, in the detection sensor according to the first aspect, the control unit is determined by the determination unit that the transmission signal includes external setting information of the same setting item as its own setting item. In this case, the setting information memory is set for the external setting information corresponding to the overlapping setting items.

According to a third aspect of the present invention, in the detection sensor according to the first aspect, the transmission signal includes external device information including at least one of model information and version information of the external device along with the external setting information. A compatible device information memory that can store the compatible device information including at least one of the compatible model information and the compatible version information that can be properly set to the self, and the determination means includes an external device included in the transmission signal. Based on the information and the corresponding device information stored in the corresponding device information memory, it is determined whether a normal setting is possible for the transmission signal from the external device.
In the present invention, the “supported model information” may be model information different from the own model as long as the model can be properly set to the model.

According to a fourth aspect of the present invention, in the detection sensor according to the third aspect, the corresponding device information stored in the corresponding device information memory includes corresponding device information in which the corresponding model information and the corresponding version information are different from the self. And a correction information memory for storing the corresponding device information different from the self and the correction information in association with each other, and the control means converts the external device information of the external device into the corresponding device information different from the self. When the values match, for the numerical information of the external setting information, a numerical value corrected based on correction information corresponding to corresponding device information different from the self is set in the setting information memory.
The “numeric information” includes, for example, setting contents of setting items such as a detection threshold, a response speed, and a timer.

  According to a fifth aspect of the present invention, in the detection sensor according to any one of the first to fourth aspects, the setting information memory is capable of setting a plurality of self setting information, and the setting information memory includes a plurality of self setting information. Designating means for designating a part of the self setting information is provided, and the control means includes the external setting information corresponding to the self setting information included in the transmission signal and designated by the designating means. Only the setting in the setting information memory is performed.

  According to a sixth aspect of the present invention, in the detection sensor according to any one of the first to fifth aspects, an initial setting information memory in which initial setting information for the setting information of the self is stored, and the setting information memory are set. Resetting means for forcibly initializing its own setting information to the initial setting information stored in the initial setting information memory.

  A seventh aspect of the invention is the detection sensor according to any one of the first to sixth aspects, wherein the detection means detects a pressure in the detection area and is set in the setting information memory. The setting information of the self is a basic value of a numerical value related to the value of the pressure, and includes display means, and the execution means is selected from a plurality of unit systems as the basic numerical value set in the setting information memory. The display means displays the value as a unit system value multiplied by a coefficient corresponding to the unit system.

  The invention according to claim 8 is the detection sensor according to any one of claims 1 to 7, wherein the transmission means for transmitting the transmission signal including its own setting information, and the master mode and the slave mode are selectively used. Switching means for switching to, when the switching means is switched to the slave mode by the switching means, the receiving means receives the transmission signal for a predetermined time after the power is turned on, and the judging means The determination operation is performed.

  The invention according to claim 9 is the detection sensor according to any one of claims 1 to 8, wherein the normal reception detecting means for detecting whether or not the transmission signal from the external device is normally received, and the normal And second notification means for performing a notification operation according to the detection result of the reception detection means.

  A tenth aspect of the present invention is the detection sensor according to the ninth aspect, further comprising response means for outputting a normal reception completion signal to the external device based on detection of normal reception by the normal reception detection means. It is characterized by being.

  An eleventh aspect of the invention is the detection sensor according to any one of the first to tenth aspects, further comprising operation means for setting the setting information of the self in the setting information memory.

  A twelfth aspect of the invention is the detection sensor according to the eleventh aspect, further comprising prohibiting means for prohibiting setting change by the operating means with respect to the external setting information set in the setting information memory by the control means. It is characterized by.

  According to a thirteenth aspect of the present invention, in the detection sensor according to the twelfth aspect, the transmission signal includes prohibition instruction information for instructing whether to execute a prohibition function, and the prohibition means includes the transmission signal. If the prohibition instruction information included in the instruction is for instructing the execution of the prohibition function, setting change by the operation means is prohibited thereafter.

  According to a fourteenth aspect of the present invention, in the detection sensor according to the twelfth or thirteenth aspect, there is provided a release unit that cancels the prohibition of the setting change by the prohibiting unit based on a predetermined operation.

According to a fifteenth aspect of the present invention, in the detection sensor according to any one of the first to fourteenth aspects, the output means that outputs an output signal based on the detection result of the detection means, and the connection terminal of the external device are The input side of the receiving means is commonly connected, an external connection terminal for outputting an output signal from the output means to the external device, an output operation of the output means, and the reception Selecting means for selectively enabling the receiving operation of the means, and the control means is configured such that when the external device is connected to the external connection terminal and the transmission signal is transmitted from the external device, The selection means validates the reception operation of the reception means, receives the transmission signal, and sets it in the setting information memory.
The “output signal” may be a detection signal (analog signal or digital signal) corresponding to a change in physical quantity, or a signal corresponding to a comparison result between a detection level and a threshold value.

  According to a sixteenth aspect of the present invention, there is provided a detection sensor for detecting a physical quantity change in a detection region, a setting information memory in which own setting information is set, and own setting information set in the setting information memory. And a transmission signal including any one of the setting item corresponding to the own setting information, the own model information, and the own version information in addition to the setting information of the own. Transmitting means for performing the above-described processing.

  According to a seventeenth aspect of the present invention, in the detection sensor according to the sixteenth aspect, the transmission signal includes prohibition instruction information for instructing whether to execute a prohibition function.

  A sensor system according to an invention of claim 18 includes the detection sensor according to any one of claims 1 to 15 and the detection sensor according to claim 16 or claim 17.

<Invention of Claim 1>
According to this configuration, it is determined whether or not the external setting information included in the transmission signal from the external device can be properly set in the setting information memory. When it is determined that the external setting information is not possible, a notification operation is performed. Therefore, the operator can know that the normal setting is not made based on this notification operation, and can suppress setting mistakes.

<Invention of Claim 2>
With such a configuration, setting (copying) based on external setting information from an external device can be executed for an effective setting item that can be properly set.

<Invention of Claim 3>
If the transmission signal from the external device includes the external setting information and the model information and version information of the external device, is it possible to set it properly based on the model information and version information? Can be judged.

<Invention of Claim 4>
When the model and version are different, for example, even if regular setting is possible in the data format, the order and unit may be different for numerical information. Therefore, in this configuration, it is possible to correct and set a numerical value such as a unit suitable for itself by predetermined correction information (correction coefficient or correction formula).

<Invention of Claim 5>
According to this configuration, setting information to be set (copied) to the user can be designated in advance on the user side.

<Invention of Claim 6>
According to this configuration, since the setting information can be initialized by the reset means, it is not necessary to set a setting item to be set in the initial setting information by a transmission signal from an external device. In particular, when there are a plurality of setting items, once initialization is performed by the reset means, it can be easily determined which item needs to be set by a transmission signal from an external device (particularly, the above claim 5). Effective in combination with).

<Invention of Claim 7>
For example, when the external setting information from the external device is a unit system numerical value, while the self setting information set in its own setting information memory is a unit system numerical value different from that of the external device, Regular setting may not be possible. Therefore, according to this configuration, the setting information set in the setting information memory is not a numerical value of each unit system itself but a basic numerical value that becomes a numerical value of each unit system by multiplying each coefficient. Therefore, the external setting information related to the numerical value included in the transmission signal transmitted from the external device is also set as the basic numerical value, and the normal setting can be easily performed by setting the setting information memory based on the basic numerical value. Can do.

<Invention of Claim 8>
According to this configuration, when the power is turned on, a setting attempt based on a transmission signal from an external device (including other detection sensors switched to the master mode) is automatically executed.

<Invention of Claim 9>
According to this configuration, it is possible to know whether or not the transmission signal has been normally received based on the notification operation of the second notification means.

<Invention of Claim 10>
According to this configuration, since the normal reception completion signal is output to the external device (including other detection sensors switched to the master mode) by the response unit, for example, until the normal reception completion signal is received on the external device side, It is possible to repeatedly output external setting information.

<Invention of Claim 11>
According to this configuration, not only the external setting information is set from an external device (including other detection sensors switched to the master mode), but also the setting information is individually set by the operation means in the detection sensor. You can also.

<Invention of Claim 12>
According to this configuration, the setting information set based on the external setting information can be prevented from being easily changed by executing the prohibit function.

<Invention of Claim 13>
According to this configuration, it is possible to determine whether or not to execute the prohibit function based on prohibition instruction information from an external device (including other detection sensors switched to the master mode).

<Invention of Claim 14>
According to this configuration, the prohibited function can be canceled by a predetermined operation. The predetermined operation is preferably an operation different from the normal operation as much as possible. For example, a special operation such as a long press of the operation button of the operation means or a simultaneous press operation of a plurality of operation buttons is desirable. Alternatively, it may be a pressing operation of a dedicated button that is normally not exposed to the outside.

<Invention of Claim 15>
According to this configuration, when the receiving unit is commonly connected to the existing external connection terminal connected to the output unit that outputs the output signal and external setting information is acquired from the external device, the receiving operation of the receiving unit is performed. Enabled (received) via the external connection terminal. In this way, by using a common external connection terminal for the output operation of the output means and the reception operation of the reception means, compared to the conventional configuration in which a dedicated communication means is provided for communication of external setting information. The cost can be reduced.

<Invention of Claims 16-18>
As described above, by including a detection sensor capable of transmitting the setting information and a detection sensor capable of receiving the setting information, a sensor system capable of suppressing a setting error for each sensor can be constructed.

<Embodiment 1>
Embodiment 1 of the present invention will be described with reference to FIGS.
1. Appearance Configuration of Pressure Sensor The pressure sensor (corresponding to “detection sensor” of the present invention) 10 of the present embodiment is, for example, in a cavity (corresponding to “detection region” of the present invention) not shown when performing vacuum forming. It is used to measure the degree of vacuum. As shown in FIG. 1, the pressure sensor 10 includes a box-shaped sensor main body 11 that is long in the front-rear direction. A first display unit 12a and a second display unit 12b serving as display means for displaying self-setting information such as measurement results and detection threshold values on the front surface of the sensor body 11 (the “first notification means, Equivalent to the “second notification means”), a mode changeover switch 13 for switching modes to be described later, and an up / down switch 14 for changing the display contents of the display units 12a and 12b. The first display unit 12a mainly displays self-setting information, and the second display unit 12b mainly displays setting items corresponding to the self-setting information displayed on the first display unit 12a.

  On the other hand, on the rear surface of the sensor main body 11, as will be described later, a control device 30 (corresponding to “external device” of the present invention) as a host device and a connection connector 15 for connecting to another pressure sensor 10, The introduction port 16 is arranged side by side. A tube (not shown) is connected to the pressure introduction port 16 via a joint so that the internal pressure in the cavity is taken into the sensor body 11 through the tube and the pressure introduction port 16. It has become.

2. Next, an electrical configuration of the pressure sensor 10 will be described with reference to FIG. In the figure, a state in which the pressure sensor 10 is connected to the control device 30 is shown.

  In the figure, reference numeral 17 denotes a pressure detection unit (corresponding to “detection means” of the present invention), which is composed of a pressure sensitive element using a semiconductor diaphragm, and is stored in the sensor main body 11 together with the CPU 18. When the internal pressure in the cavity is taken in through the pressure introduction port 16, the pressure detector 17 outputs a detection signal Sa as an analog signal corresponding to the magnitude of the pressure value, and the A / D converter (not shown) outputs the detection signal Sa. / D converted and provided to the CPU 18.

  The CPU 18 is connected to a memory 19 (corresponding to the “setting information memory” of the present invention). For example, a first threshold value and a second threshold value for detection and a timer for execution timing of the detection operation are connected to the memory 19. A recording area in which various self-setting information such as values, response speeds, display switching speeds of the display units 12a and 12b, and energy saving mode settings are stored is secured.

  In the detection mode to be described later, the CPU 18 repeatedly reads the detection signal Sa at an execution timing corresponding to the timer value set in the memory 19, and detects the detected pressure value and the detection first value set in the memory 19. The first threshold value and the second threshold value are respectively compared. Then, an output signal corresponding to the comparison result is output at an output timing corresponding to the response speed set in the memory 19. This is an example of “operation based on own setting information” in the present invention. Therefore, the CPU 18 functions as “execution means” of the present invention.

  Specifically, the output signal Sb based on the magnitude comparison result between the detected pressure value and the first threshold value is output via the first output circuit 20, and the output signal based on the magnitude comparison result between the detected pressure value and the second threshold value. Sc (corresponding to “an output signal based on the detection result” in the present invention) is output via the second output circuit 21 (corresponding to “output means” in the present invention).

  The connection connector 15 includes four connection terminals, two of which are a power supply terminal 15a and a ground terminal 15b for supplying power, and the other two are first output circuits, respectively. 20 and external connection terminals 15 c and 15 d connected to the output side of the second output circuit 21.

  Further, an input circuit 22 (corresponding to “reception means” of the present invention) is commonly connected to the external connection terminal 15d (corresponding to “external connection terminal” of the present invention). The input circuit 22 is originally provided for inputting the command signal Sd from the control device 30. Specifically, the second output circuit 21 and the input circuit 22 each have built-in open / close switches 21a and 22a (corresponding to “selecting means” of the present invention).

  The CPU 18 closes the open / close switch 21a of the second output circuit 21 (validates the output operation of the second output circuit 21) at each execution timing, for example, in the detection mode described later, while the input circuit The open / close switch 22a of 22 is opened (invalidating the input operation of the input circuit 22), and the detection operation (comparison operation of the detected pressure value and the threshold value) is executed, and output signals Sb and Sc are output. On the other hand, between the execution timings, the open / close switch 21a of the second output circuit 21 is opened (disabling the output operation of the second output circuit 21), and the open / close switch 22a of the input circuit 22 is closed (input circuit 22). Is enabled) to determine whether or not the command signal Sd is received based on the potential level of the external connection terminal 15d, and when received, the command signal Sd is received via the external connection terminal 15d and the input circuit 22. It comes to input. In this embodiment, the input circuit 22 is also used in a copy mode in which setting information from another pressure sensor 10 is input as will be described later.

  The command signal Sd includes, for example, a zero adjustment command signal, an auto reference command signal, and an auto teaching command signal. When the command signal Sd is a zero adjustment command signal, the detected pressure value at that time is stored in the memory 19 as a reference level, and in the subsequent detection operation, the relative pressure value obtained by subtracting the reference level from the detected pressure value. Is displayed on the display unit 12a, so-called zero adjustment function is executed.

  When the command signal Sd is an auto-reference command signal, a so-called auto-reference function is performed in which the first threshold value and the second threshold value are shifted and corrected by the variation of the original pressure of the device to be measured. When the command signal Sd is an auto teaching command signal, a so-called auto teaching function is executed in which the first threshold value and the second threshold value are reset based on the detected pressure value at that time.

  Further, the display units 12 a and 12 b and the operation unit 23 are connected to the CPU 18. The display units 12a and 12b are configured to include, for example, a liquid crystal panel, and characters / symbols indicating various modes (detection mode, copy mode, setting information input mode, etc.) are displayed on the display unit 12b, for example, when the mode is switched. In the detection mode, the current detected pressure value, the first threshold value, the second threshold value, and the like are displayed on the display unit 12a. In the copy mode, which will be described later, characters / symbols indicating whether setting information has been input are displayed on the display unit 12a. , 12b. In addition, characters / symbols indicating setting item names corresponding to setting information (detected pressure values, threshold values, etc.) displayed on the display unit 12a may be displayed on the display unit 12b.

  The operation unit 23 gives a signal to the CPU 18 according to the operation of the mode switch 13 or the up / down switch 14 described above. By switching the mode changeover switch 13 to the “setting information input mode”, the value of each setting information currently set is displayed on the display unit 12a, and characters / symbols indicating the setting item names corresponding thereto are displayed on the display unit 12b. When the up / down switch 14 is operated to change the display value of the display unit 12a to a desired value and perform a confirmation operation (for example, pressing the up / down switch 14 simultaneously), the display value is set as setting information in the memory 19. Can be set to Therefore, the mode switch 13, the up / down switch 14, and the operation unit 23 function as the “operation means” of the present invention.

3. 2. Control contents of CPU of pressure sensor (1) Detection mode When performing a normal detection operation, the pressure sensor 10 is connected to a control device 30 as shown in FIG. Specifically, the control device 30 is also provided with a connection connector 31, which is provided with four connection terminals, two of which are a power supply terminal 31a and a ground terminal 31b connected to the power supply circuit 33. The connector cable 32 is electrically connected to the power supply terminal 15a and the ground terminal 15b of the pressure sensor 10. As a result, power is supplied from the power supply circuit 36 to each pressure sensor 10.

  The other two connection terminals 31c and 31d are connected to the CPU 34 and are also electrically connected to the external connection terminals 15c and 15d of the pressure sensor 10 by the connector cable 32, respectively. The output signal Sb from the first output circuit 20 of the pressure sensor 10 is input to the connection terminal 31 c and is taken into the CPU 34. The connection terminal 31d (corresponding to the “connection terminal of the external device” of the present invention) normally receives the output signal Sc from the second output circuit 21 of the pressure sensor 10 and takes it into the CPU 34, and at the time of command output The command signal Sd is output by an input / output switching circuit (not shown).

  When the pressure sensor 10 is turned on by being connected to the control device 30 by a connector, the CPU 18 executes the control shown in the flowchart of FIG. In the present embodiment, the detection mode is set when the power is turned on, and the detection mode in which a series of operations such as the detection operation described above is repeated is executed (S1). That is, at each execution timing corresponding to the currently set timer value, the detection signal Sa is read, and a comparison operation between the detected pressure value and the currently set first and second threshold values for detection is performed. Then, the output signals Sb and Sc corresponding to the comparison result are output by enabling the first output circuit 20 and the second output circuit 21 at the output timing corresponding to the currently set response speed. As a result, the control device 30 receives the output signals Sb and Sc at each execution timing.

  Then, between the detection operation and the output operation and before the next execution timing, the input operation of the input circuit 22 is validated while the output operation of the second output circuit 21 is invalidated, and the command signal Sd is sent from the control device 30. If it is received, a command signal is acquired, and a function corresponding to the command signal Sd is executed.

(2) Copy Mode Now, when it is desired to acquire setting information already set in other pressure sensors 10, the pressure sensors 10 are connected to each other via a connector cable 35 as shown in FIG. Specifically, the power terminals 15a and the ground terminals 15b of both pressure sensors 10 are electrically connected to each other. The external connection terminal 15c of one pressure sensor 10 is cross-connected to the external connection terminal 15d of the other pressure sensor 10, and the external connection terminal 15d of one pressure sensor 10 is cross-connected to the external connection terminal 15c of the other pressure sensor 10, respectively. Has been.

  Here, the pressure sensor 10 of the present embodiment is set to the master mode when it is desired to function as a copy source by the operation of the mode switch 13 and the up / down switch 14, and is set to the slave mode when it is desired to function as a copy destination. It can be switched selectively. Therefore, the mode switch 13, the up / down switch 14, and the operation unit 23 also function as the “switching unit” of the present invention. In the figure, the right pressure sensor 10a is switched to the master mode, and the left pressure sensor 10b is switched to the slave mode.

  In FIG. 4, the CPU 18 of each pressure sensor 10 determines in S2 whether or not there is an interruption of the switching operation to the copy mode between the execution timings, and if there is no interruption ("N" in S2), the detection mode is continued. Is repeated, if there is an interrupt (“Y” in S2), the detection mode is stopped and the copy mode is entered. First, in S3, it is determined whether the current mode is the master mode or the slave mode. Since the pressure sensor 10a is switched to the master mode (“Y” in S3), copy transmission is executed (S4).

(Master mode)
As shown in FIG. 5, the CPU 18 invalidates the output operation of the second output circuit 21 in S11, while validating the input operation of the input circuit 22. Next, in S12, the copy mode pulse Se is output from the first output circuit 20 via the external connection terminal 15c. As a result, the copy mode pulse Se is applied to the external connection terminal 15d of the pressure sensor 10b in the slave mode.

  Then, in S13, the CPU 18 determines whether or not an answer back signal Sf, which will be described later, has been received via the input circuit 22 that has already been validated, and waits until the answer back signal Sf is received (“N” in S13). ) When received (“Y” in S13), the transmission signal D including its own setting information (external setting information as viewed from the pressure sensor 10b) set in the memory 19 is output via the first output circuit 20 (S14). Therefore, the first output circuit 20 corresponds to the “transmission means” of the present invention. Thereby, the transmission signal D is given to the external connection terminal 15d of the pressure sensor 10b in the slave mode.

(Slave mode)
On the other hand, returning to FIG. 4, since the pressure sensor 10b has been switched to the slave mode (“N” in S3), copy reception is executed (S5). As shown in FIG. 6, the CPU 18 of the pressure sensor 10b invalidates the output operation of the second output circuit 21 in S21 and validates the input operation of the input circuit 22.

  Next, in S22, it is determined whether or not the copy mode pulse Se is input to the input circuit 22. If there is an input (“Y” in S22), the answerback signal Sf is sent from the first output circuit 20 in S23. Output. As a result, the answer back signal Sf is supplied to the input circuit 22 of the pressure sensor 10a in the master mode. In S24, the transmission signal D transmitted from the first output circuit 20 of the pressure sensor 10a in the master mode is received via the input circuit 22.

  Here, in this embodiment, the transmission signal D transmitted from the pressure sensor 10a includes a plurality of setting information, each setting item, and model information of the pressure sensor 10a, as shown in FIG. Yes. On the other hand, the memory 19 of the pressure sensor 10b stores the setting information in association with the corresponding setting items in the storage area storing the various setting information. The memory 19 has an area for storing the model information of the pressure sensor 10b itself. Therefore, the memory 19 corresponds to the “supported model information memory” of the present invention.

  Then, the CPU 18 of the pressure sensor 10b determines whether or not the model information of the pressure sensor 10a included in the transmission signal D matches the own model information stored in its own memory 19 in S25 of FIG. To do. If the CPU 18 determines that the model information matches (“Y” in S25), for example, a character / symbol (eg, “OK” indicating that copying can be executed on either of the display units 12a and 12b. ]) Is displayed.

  At the same time, the CPU 18 does not attempt to match the setting items as described below, and the order previously assigned to the various setting information stored in its own memory 19 and the various external settings included in the transmission signal D. Since the information receiving order matches the setting information for the same setting item, a copy operation is executed in which the external setting information is written and updated to the self-setting information of the same order in the order of reception. (S26).

  On the other hand, if the CPU 18 determines that the model information does not match in S25, it tries to match each external setting item included in the transmission signal D with the self-setting item of the pressure sensor 10b itself in S27. The setting items that can be set for each model may differ. For example, as shown in FIG. 7, there is no third setting item in the self-setting items of the pressure sensor 10b. However, there are matching items such as the first setting item and the second setting item.

  Therefore, the CPU 18 assumes that a copy operation (corresponding to “regular setting” in the present invention) can be executed for some setting items (“Y” in S27), and again in either of the display units 12a and 12b. Characters / symbols (for example, “OK”) indicating that copying can be executed are displayed, and the copying operation is executed only for the matching first setting item and second setting item (S26). The display patterns on the display units 12a and 12b may be different depending on whether the copy operation can be executed for the setting items and the copy operation can be executed for some setting items.

  On the other hand, if the CPU 18 determines that there is no matching setting item, the CPU 18 displays a character / symbol (for example, “ERR”) indicating that copying cannot be performed on either of the display units 12a and 12b (S28). As described above, the CPU 18 also functions as “determination means” and “control means” of the present invention. After that, when the mode is switched again to the detection mode by the mode switch 13, the CPU 18 of the pressure sensor 10b repeatedly executes a detection operation based on the newly updated setting information.

4). Effects of the present embodiment (1) According to the present embodiment, it is determined whether or not the setting information copy operation can be normally performed by matching the model information and the setting item. , 12b are displayed with characters / symbols (for example, “ERR”) indicating that copying cannot be performed, so that the operator knows that the normal setting has not been made based on the notification operation. And setting errors can be suppressed.

  (2) Further, according to the present embodiment, the second output circuit 21 inherently included in the pressure sensor 10 and the input circuit 22 commonly connected to the external connection terminal 15d connected thereto are selectively enabled. The output signal Sc and the transmission signal D can be received using the common external connection terminal 15d. Therefore, it is not necessary to provide a dedicated communication means for transmitting / receiving the transmission signal D.

  Moreover, in the present embodiment, the input circuit 22 is provided in advance for inputting the command signal Sd in the detection mode. Therefore, basically, the transmission signal D can be transmitted and received without adding a new hardware configuration.

  (3) One pressure sensor 10 can be switched to either a master as a copy source or a slave as a copy destination.

  (4) Since the connection terminals are electrically connected by connecting the pressure sensors 10 to each other via the connector cable 35, for example, the connection wiring is connected to the connection terminals to be electrically connected. Compared to the connection work becomes easier.

  (5) Each pressure sensor 10 can be set not only by setting data by receiving data from other detection sensors, but also directly by operating the mode switch 13 and the up / down switch 14.

<Embodiment 2>
8 to 10 show a second embodiment (corresponding to the inventions of claims 3, 4, 9, and 10). The difference from the above embodiment is mainly the data structure of the transmission signal D and the contents of the copy transmission routine and copy reception routine of the CPU 18 in the copy mode, and the other points are the same as in the first embodiment. Therefore, the same reference numerals as those in the first embodiment are given and the redundant description is omitted, and only different points will be described next.

(Master mode)
The CPU 18 of the pressure sensor 10a in the master mode executes a copy transmission routine shown in FIG. In S31, the output operation of the second output circuit 21 is invalidated while the input operation of the input circuit 22 is validated. Next, in S32, the copy mode pulse Se is output from the first output circuit 20 via the external connection terminal 15c. As a result, the copy mode pulse Se is applied to the external connection terminal 15d of the pressure sensor 10b in the slave mode.

  In S32, the CPU 18 determines whether or not the answerback signal Sf has been received via the input circuit 22 that has already been enabled, and waits until the answerback signal Sf is received (“N” in S33). When received (“Y” in S33), the transmission includes its own setting information (external setting information as viewed from the pressure sensor 10b) set in the memory 19 via the first output circuit 20 and the CRC data for verification. The signal D is output (S34).

  Here, as shown in FIG. 10, this transmission signal has no setting items and includes various setting information, model information and version information of the pressure sensor 10a itself, and the CRC data. This transmission signal D is given to the external connection terminal 15d of the pressure sensor 10b in the slave mode. The transmission operation of the transmission signal D is repeatedly executed until a reception completion signal described later is received by the input circuit 22 (S35).

(Slave mode)
The CPU 18 of the pressure sensor 10b in the slave mode executes a copy reception routine shown in FIG. In S41, the output operation of the second output circuit 21 is invalidated while the input operation of the input circuit 22 is validated. Next, in S42, it is determined whether or not the copy mode pulse Se is input to the input circuit 22. If there is an input (“Y” in S42), the answerback signal Sf is sent from the first output circuit 20 in S43. Output. As a result, the answer back signal Sf is supplied to the input circuit 22 of the pressure sensor 10a in the master mode.

  In S44, the transmission signal D transmitted from the first output circuit 20 of the pressure sensor 10a in the master mode is received via the input circuit 22. Here, the CPU 18 functions as an input detection means for determining whether or not the reception of these data has ended, and when the reception ends, displays a character / symbol or the like indicating that on either of the display units 12a and 12b. Let

  Next, in S45, the setting information included in the received transmission signal D is CRC converted, and in S46, it is determined whether the converted CRC data matches the received CRC data. At this time, the CPU 18 functions as “normal reception detecting means” of the present invention. If they match (“Y” in S46), it is assumed that the transmission signal D has been normally received from the pressure sensor 10a in the master mode, and characters / symbols or the like indicating that on either of the display units 12a and 12b (for example, “OK”) is displayed (S 47), and a reception completion signal (corresponding to “normal acquisition completion signal” of the present invention) is output via the first output circuit 20. At this time, the first output circuit 20 functions as “response means” of the present invention. The pressure sensor 10b gives an error signal to the pressure sensor 10a via the first output circuit 20 when the converted CRC data and the received CRC data do not match, and the CPU 18 of the pressure sensor 10a When the error signal is received in S35, the transmission signal D including the self-setting information and CRC data is transmitted again (S34), and the copy transmission execution routine is terminated when the error signal is not received. May be.

  Here, as shown in FIG. 10, the memory 19 of the pressure sensor 10b has a storage area for storing corresponding device information (compatible model and version) that can normally copy the setting information to itself. Yes. In addition, a correction coefficient of setting information regarding numerical values is stored in association with each corresponding model and version. Then, the CPU 18 of the pressure sensor 10b determines whether or not the model of the pressure sensor 10a included in the transmission signal D in S60 of FIG. 9 matches the model of the pressure sensor 10b. Here, if the model and version match or if the model and version of the pressure sensor 10a are included in the corresponding device information even if they do not match, the pressure sensor 10a is a corresponding device. A determination is made (“Y” in S60), and a character / symbol (eg, “OK”) indicating that copying can be executed is displayed on, for example, one of the display units 12a and 12b in S61.

  At the same time, the CPU 18 sets the setting information for the setting items having the same order in the various setting information stored in the memory 19 and the order in which the various external setting information included in the transmission signal D is received. Therefore, a copy operation is executed in which the external setting information is written and updated with respect to the self-setting information of the same order in the order of reception (S61).

  Further, in the present embodiment, when the pressure sensor 10a is a compatible device having a different model or version, external setting information relating to numerical values such as a threshold value is stored in the memory 19 corresponding to the model and version of the pressure sensor 10a. Multiply by the correction coefficient and write to the memory 19 to update After that, when the mode is switched again to the detection mode by the mode switch 13, the CPU 18 of the pressure sensor 10b repeatedly executes a detection operation based on the newly updated setting information.

  On the other hand, if the model and version of the pressure sensor 10a are not included in the corresponding device information in S60 ("N" in S60), the CPU 18 determines that the pressure sensor 10a is not a corresponding device and displays the display unit 12a. , 12b, a character / symbol (for example, “ERR”) indicating that copying cannot be executed is displayed (S62).

  If the converted CRC data and the received CRC data do not match (“N” in S46), an error signal indicating that is output from the first output circuit 20. The master mode pressure sensor 10 a that has received this via the input circuit 22 transmits a transmission signal D via the first output circuit 20. Then, in the case where there is a continuous mismatch for a predetermined number of times (for example, three times in the present embodiment) (“Y” in S48), characters / symbols (eg, “ERR”) indicating an error in the display units 12a and 12b in S49. Is displayed. At this time, the display units 12a and 12b function as "second notification means" of the present invention.

  According to the above configuration, whether or not the transmission signal D has been received by the display of the display units 12a and 12b, and whether or not the transmission signal D from the pressure sensor 10a in the master mode has been normally acquired. Can know.

  Further, when the models and versions of the pressure sensor 10a and the pressure sensor 10b are different, for example, even though regular setting is possible in the data format, the order and unit may be different for numerical information. Then, it can be set by correcting to a numerical value such as a unit suitable for itself by a predetermined correction coefficient.

<Embodiment 3>
FIG. 11 shows a third embodiment. The difference from the first embodiment is the configuration of the output means, and the other points are the same as in the first embodiment. Therefore, the same reference numerals as those in the first embodiment are given and the redundant description is omitted, and only different points will be described next.

  As shown in FIG. 11, in each pressure sensor 40 (40a, 40b) of this embodiment, there is no said 2nd output circuit 21 with respect to the pressure sensor 10 (10a, 10b) of Embodiment 1, and pressure is used instead. An analog output circuit 41 (corresponding to “output means” of the present invention) for amplifying the detection signal Sa (corresponding to “output signal” of the present invention) from the detection unit 17 and outputting it as an analog signal is provided. The output side and the input side of the input circuit 22 are commonly connected to the external connection terminal 15d. When the input operation of the input circuit 22 is validated, the open / close switch 22a is closed, while the amplification degree of the analog output circuit 41 is lowered so that the external connection terminal 15d is not substantially affected. To do. When the output operation of the analog output circuit 41 is validated, the amplification degree is restored, and the open / close switch 22a of the input circuit 22 is opened.

  Even with such a configuration, setting information can be copied from the pressure sensor 40a in the master mode to the pressure sensor 40b by executing the control of the CPU 18 in the first and second embodiments, and the same as in the first embodiment. The effect of can be obtained.

<Embodiment 4>
FIG. 12 shows a fourth embodiment (corresponding to the invention of claim 8). The same parts as those of the first embodiment are denoted by the same reference numerals, and redundant description is omitted, and only different points will be described next.

  In the first to third embodiments, the detection mode is initially set when the power is turned on. However, the configuration is not limited to this, and the configuration shown in FIG. 12 may be used. That is, when the pressure sensor 10 is switched to the master mode at the time of turning on the power (“Y” in S3), the pressure sensor 10 automatically shifts to the copy mode and forcibly transmits the copy for a predetermined time. Execute. Then, after a predetermined time has elapsed (“Y” in S50), the mode shifts to the detection mode.

  On the other hand, when the mode is switched to the slave mode (“N” in S3), the mode automatically shifts to the copy mode, and the copy reception is forcibly executed for a predetermined time. Then, after a predetermined time has elapsed (“Y” in S50), the mode shifts to the detection mode.

  In such a configuration, the two pressure sensors 10a and 10b are switched to the master mode and the slave mode in advance, and the power is turned on by connecting the connector via the connector cable 35, and the setting information is automatically copied. It can be performed.

<Embodiment 5>
FIG. 13 shows a fifth embodiment. In addition, the same part as Embodiment 1 attaches | subjects the same code | symbol, the overlapping description is abbreviate | omitted, and only a different part is demonstrated below.

  Although the pressure sensors 10 and 40 of each of the above embodiments are of a two-output type, the pressure sensor 50 of this embodiment corresponds to an output circuit 51 (corresponding to the “output means” of the present invention) similar to the second output circuit. The output side of the output circuit 51 is commonly connected to the input side of the input circuit 22 at the external connection terminal 15d. Further, the operation unit 23 and the display units 12a and 12b are not provided.

  In order to set and change the setting information, as shown in FIG. 13, a connection connector 53 of a control device 52 (corresponding to “external device” of the present invention) is connected to the connection connector 15, and this control is performed. Setting information is acquired from the device 52.

  With this connector connection, power is supplied to the pressure sensor 50 via the power supply terminals 53a and 53b connected to the power circuit 54 of the control device 52, and the mode automatically shifts to the copy mode. In the copy mode, the CPU 18 opens the open / close switch 51a of the output circuit 51 to invalidate the output operation, and closes the open / close switch 22a of the input circuit 22 to validate the input operation. Then, the transmission signal D transmitted from the CPU 55 of the control device 52 via the connection terminal 53 d is acquired via the input circuit 22 and set in the memory 19.

  Thereafter, the mode automatically shifts to the detection mode after a predetermined time has passed since the power is turned on, and this time, the output operation of the output circuit 51 is validated, and the output signal Sc is also sent to the control device 52 side via the external connection terminal 15d for each detection operation. Output to.

  Even with such a configuration, the output of the output signal Sc in the detection mode and the input of the transmission signal D in the copy mode can be performed through the common external connection terminal 15d. There is no need to provide communication means.

<Embodiment 6>
FIG. 14 shows a sixth embodiment. In addition, the same part as Embodiment 1, 5 attaches | subjects the same code | symbol, the overlapping description is abbreviate | omitted, and only a different part is demonstrated below.

  The pressure sensor 60 includes an output circuit 63 similar to the first output circuit of the first embodiment, a command input circuit 61, and a setting information input circuit 62. The input sides of these input circuits 61 and 62 are external. Commonly connected to the connection terminal 15d.

  By connecting the control device 52 to the connector, the pressure sensor 60 is powered on, and thus automatically shifts to the copy mode. In the copy mode, the CPU 18 opens the open / close switch 61a of the command input circuit 61 to invalidate the input operation, and closes the open / close switch 62a of the setting information input circuit 62 to validate the input operation. . Then, the transmission signal D transmitted from the CPU 55 of the control device 52 via the connection terminal 53 d is acquired via the command input circuit 62 and set in the memory 19.

  Thereafter, the mode automatically shifts to the detection mode after the elapse of a predetermined time since the power is turned on, this time the input operation of only the command input circuit 51 is validated, and the command signal Sd from the control device 52 is put between the execution timings of the detection operation. Is also input via the external connection terminal 15d.

  Here, the setting information input circuit 62 for inputting the transmission signal D needs to be configured to read the pulse width and the like of the input signal, while the command signal Sd from the outside (for example, zero adjustment) The command input circuit 61 for inputting a command signal, an auto-reference command signal, an auto-teaching command signal, etc.) can be configured to detect only the high / low level of the input signal. Moreover, the setting information is not acquired so frequently. Therefore, in the present embodiment, the setting information input circuit 62 and the command input circuit 62 are configured as separate circuits, and the input operation of the command input circuit 62 is validated only when setting information is acquired (when power is turned on). .

<Embodiment 7>
FIG. 15 shows a seventh embodiment. In addition, the same part as Embodiment 1 attaches | subjects the same code | symbol, the overlapping description is abbreviate | omitted, and only a different part is demonstrated below.

  The present embodiment includes three or more (four in the present embodiment) pressure sensors 70, and setting information set in one pressure sensor 70a is transferred to the next pressure sensor 70b and further to the next pressure sensor 70c. It is the structure which copies sequentially.

  Each pressure sensor 70 includes a pressure detection unit 17, a CPU 18, a memory 19, a first output circuit 20, a second output circuit 21, and an input circuit 22. The output of the first output circuit 20 is connected to the external connection terminal 15c, and the output side of the second output circuit 21 and the input side of the input circuit 22 are commonly connected to the external connection terminal 15d. Then, the output operation of the second output circuit 21 and the input operation of the input circuit 22 are selectively validated under the control of the CPU 18. Each pressure sensor 70 is powered on by a power supply means (not shown).

  For each pressure sensor 70, the external connection terminal 15 c connected to the first output circuit 20 is electrically connected to the external connection terminal 15 d of the other pressure sensor 70, and the external connection connected to the second output circuit 21 and the input circuit 22. The terminal 15d is connected to another pressure sensor 70 different from the other pressure sensor 70 described above. Thus, each pressure sensor 70 can input a signal from one pressure sensor 70 via the external connection terminal 15d, and can output a signal from the first output circuit 20 to the other pressure sensor 70. Will be connected to.

  In such a configuration, for example, when setting information is already set in the memory 19 of the first pressure sensor 70a, and this setting information is copied to the second to fourth pressure sensors 70b to 70d, first, As shown in FIG. 15, four pressure sensors 70 are connected, and all of them are set to the copy mode by the operation unit 23 (not shown in FIG. 15). Next, the first pressure sensor 70a is set to the master mode, and the second pressure sensor 70b is set to the slave mode. Then, the first pressure sensor 70a outputs the transmission signal D from the first output circuit 20, and this is acquired by the second pressure sensor 70b via the validated input circuit 22, and the memory 19 Set to.

  Thereafter, when the second pressure sensor 70b is switched to the master mode, the second pressure sensor 70b outputs the transmission signal D from the first output circuit 20 in the same manner as described above. The pressure sensor 70 c is acquired via the validated input circuit 22 and set in the memory 19. Thereafter, similarly, the transmission signal D is copied to the fourth pressure sensor 70d by switching the third pressure sensor 70c to the master mode. When the transmission signal D from the fourth pressure sensor 70d is received by the first pressure sensor 70a, the first pressure sensor 70a can recognize that the copy has been completed normally. The result is displayed on the display unit 12 (omitted in FIG. 15). At this time, the transmission signal D from the fourth pressure sensor 70d is collated with the setting information as the copy source already stored in the memory 19, and the display pattern is displayed on the display unit 12 according to the collation result. It may be a configuration.

  The second to fourth pressure sensors 70b to 70d may be configured to automatically shift from the slave mode to the master mode on condition that the setting information data is set in its own memory 19.

<Eighth embodiment>
FIG. 16 shows an eighth embodiment. In addition, the same part as Embodiment 1 attaches | subjects the same code | symbol, the overlapping description is abbreviate | omitted, and only a different part is demonstrated below.
In the pressure sensor 10 of the present embodiment, the self-setting information copied to the memory 19 based on the external setting information of the transmission signal D from another external device cannot be changed and set by the operation at the operation unit 23. A so-called key lock function is provided. In the state where the key lock function is executed, the pressure sensor 10 displays, for example, the currently set values of the setting information on the display unit 12a. However, even if the up / down switch 14 is operated, the display value is changed. The CPU 18 instructs the prohibition operation so as not to be performed. As another method, the CPU 18 rewrites the self-setting information copied to the memory 19 so that the display value of the display unit 12a can be changed by the operation of the up / down switch 14 and the confirmation operation is not accepted. It may be configured not to update. Therefore, the CPU 18 also functions as “inhibiting means” of the present invention.

  In addition, the pressure sensor 10 executes the key lock function by a special operation of, for example, simultaneously pressing and holding the mode switch 13 and the up / down switch 14 for a predetermined time, and cancels the key lock function by a similar special operation again. It can be done. When the master mode pressure sensor 10a in FIG. 3 is in a state in which the key lock function is executed, a transmission signal including key lock activation information indicating the execution of the key lock function in S14 of FIG. D is output. On the other hand, when the key lock function is released, the pressure sensor 10a outputs a transmission signal D including key lock invalidation information indicating release of the key lock function in S14.

  On the other hand, in the pressure sensor 10b in the slave mode, as shown in FIG. 16, when the CPU 18 determines that the model information matches in S25 (“Y” in S25), or when some setting items match in S27. If it is determined, it is determined whether or not the key lock enabling information is included in the transmission signal D in S70. If the key lock activation information is not included (“N” in S70), the CPU 18 executes the copy operation and displays a character / symbol (eg, “OK”) indicating that the copy is executable in S26. Is executed, but the key lock function is not executed.

On the other hand, if the key lock activation information is included (“Y” in S70), the CPU 18 performs a copy operation in S71 and a character / symbol indicating that the copy can be executed (for example, “OK”). ]), The key lock function is activated, so that the pressure sensor 10b can easily copy the copied self-setting information unless the operation unit 23 performs the above-described special operation. Cannot be changed to
With such a configuration, it is possible to prevent the operator from easily changing the setting of the self-setting information copied to the memory 19 by executing the copy function. Needless to say, the key lock function described in the present embodiment can be applied to the second to seventh embodiments.

<Ninth Embodiment>
17 and 19 show the ninth embodiment. Each pressure sensor 10 of the present embodiment also has a key lock function as in the eighth embodiment. Each pressure sensor 10 can selectively set the key lock transmission mode and the normal transmission mode by a predetermined operation on the operation unit 23, for example.
As shown in FIG. 17, when the power is turned on to each pressure sensor 10, the CPU 18 reads each data stored in the memory 19 including the validity / invalidity information of the key lock function in S80.

(Master mode)
When the pressure sensor 10 is switched to the master mode (“Y” in S81), the CPU 18 determines whether or not its own pressure sensor 10 is set to the key lock transmission mode in S82. When determining that the key lock transmission mode is set (“Y” in S82), the CPU 18 outputs a transmission signal D including key lock activation information indicating execution of the key lock function in S83. Specifically, the CPU 18 basically executes the same processing as in FIG. 5 described above, and outputs a transmission signal D including key lock activation information in S14 of FIG.

On the other hand, when determining that the normal transmission mode is set (“N” in S82), the CPU 18 outputs a transmission signal D including key lock invalidation information indicating release of the key lock function in S84. Specifically, the CPU 18 basically executes the same processing as in FIG. 5 described above, and outputs a transmission signal D including key lock invalidation information in S14 of FIG.
Then, the CPU 18 repeatedly executes the processes of S81 to S85 until the transmission mode (key lock transmission mode, normal transmission mode) is canceled in S85. In FIG. 3, the CPU 18 of the pressure sensor 10a in the master mode executes these processes.

  After that, when the pressure sensor 10a is released from the transmission mode, for example, switched to the detection mode, the CPU 18 reads the key lock function valid / invalid information set in its own memory 19, and this is the key lock function. Is instructed to enable (“Y” in S86), the pressure sensor 10a itself executes the key lock function and shifts to the detection mode (S87, S88). On the other hand, if it is an instruction to invalidate the key lock function (“N” in S86), the pressure sensor 10a itself shifts to the detection mode without executing the key lock function (S88).

(Slave mode)
When the pressure sensor 10 is switched to the slave mode (“N” in S81), the CPU 18 executes the copy reception routine shown in FIG. 18 in S89. The processing here is basically the same as the copy reception routine shown in FIG. 9 described above. The following points are different. That is, the CPU 18 invalidates the output operation of the second output circuit 21 in S41 and validates the input operation of the input circuit 22 and then inputs the copy mode pulse Se to the input circuit 22 in S42. Determine if you are. If the copy mode pulse Se is input within a predetermined time (“Y” in S42, “N” in S90), the answerback signal Sf is output from the first output circuit 20 in S43. On the other hand, if the copy mode pulse Se is not input within the predetermined time (“N” in S42, “Y” in S90), the CPU 18 proceeds to S86 in FIG.

By such processing, when the power sensor of the slave mode is turned on, the CPU 18 of the pressure sensor 10b waits for the input of the copy mode pulse Se in S42, and if there is no input within a predetermined time, the CPU 18 of the pressure sensor 10b has its own memory. The key lock function valid / invalid information set to 19 is read. When the copy reception has not been executed yet, the key lock function valid / invalid information instructs to invalidate the key lock function, and the key lock function is not executed ("N" in S86). .
On the other hand, if the copy mode pulse Se is input within the predetermined time in S42, the CPU 18 receives the data of the transmission signal D from the pressure sensor 10a (S44). "Error" is displayed (S49, S62), and if normal setting is possible, "OK" is displayed and the copy operation is executed (S61).

Here, when the key lock activation information is included in the transmission signal D received in S44, the CPU 18 writes the information in the memory 19. Then, after “error” display or “OK” display is displayed on either of the display units 12a and 12b (S49.S61 and S62), when the power is reapplied to the pressure sensor 10b, the CPU 18 again displays FIG. The processing is resumed from S80, and each data stored in the memory 19 including the validity / invalidity information of the key lock function is read. When the CPU 18 exits the copy reception routine of S89 without receiving the copy mode pulse Se within the predetermined time, the CPU 18 activates the key lock function based on the validity / invalidity information of the key lock function read in S80 in S86. Decide whether to run. Here, as described above, since the key lock activation information included in the transmission signal D before the power supply is turned back on is written in the memory 19, from this key lock activation information, the key to the pressure sensor 10a itself is stored. The lock function is executed to shift to the detection mode (S87, S88).
With such a configuration, it is possible to prevent the operator from easily changing the setting of the self-setting information copied to the memory 19 by executing the copy function. Needless to say, the key lock function described in this embodiment can be applied to the first to seventh embodiments.

<Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, within the scope not departing from the gist of the invention other than the following. Various modifications can be made.
(1) In the first embodiment, each of the first output circuit 20 and the second output circuit 21 is configured to output an output signal corresponding to the magnitude comparison result between the detected pressure value and the threshold value. The configuration is not limited, and the detection signal Sa subjected to A / D conversion from the pressure detection unit 17 may be output as it is.

  (2) In each of the above embodiments, in order to selectively enable the output circuit, the input circuit, etc., each has a built-in open / close switch. Of course, it is possible to provide a switch.

  (3) In the said embodiment, although it was set as the display parts 12a and 12b which consist of a liquid crystal panel as an alerting | reporting means, not only this but the structure which provides the indicator lamp which consists of LED, for example, and alert | reports by this lighting pattern may be sufficient. . Moreover, as long as it can alert | report, sounding means, such as a buzzer, may be sufficient.

  (4) In the fifth embodiment, the operation unit 23 and the display unit 12 are provided to enable switching between the master mode and the slave mode, and the pressure sensor 10 switched to the master mode and the pressure switched to the slave mode. The master mode pressure sensor 10 enables the output operation of the output circuit 51 and thereby outputs its own transmission signal D. The slave mode pressure sensor 10 is connected to the input circuit 22. The input operation may be validated and the transmission signal D may be input via the external connection terminal 15d and set in the memory 19.

  (5) In the second embodiment, when the converted CRC data and the received CRC data do not coincide with each other three times, a predetermined error operation is performed. The configuration may be such that an error operation is performed by one mismatch or a plurality of mismatches other than three.

  (6) In each of the above-described embodiments, the pressure sensors 10 to 70 are configured to preliminarily specify the setting information for executing the copy operation from the own setting information by operating the mode switch 13 and the up / down switch 14. Also good. Thereby, in the pressure sensor set in the master mode, only the specified setting information can be included in the transmission signal D and transmitted, and in the pressure sensor set in the slave mode, the specified setting is performed. Only information that can be copied in information can be copied. At this time, the mode selector switch 13 and the up / down switch 14 function as “designating means” of the present invention.

  (7) Further, a memory area for storing the initial setting information of each self-setting information is secured in the memory 19, and each CPU 18 is set in the memory 19 by the operation of the mode switch 13 and the up / down switch 14. The configuration may be such that the setting information is reset to the initial setting information. At this time, the memory 19 corresponds to the “initial setting information memory” of the present invention, and the CPU 18 functions as “reset means”.

  (8) The pressure sensors 10 to 70 of the above embodiment display numerical values related to pressure (for example, threshold values, detection values, etc.) in various unit systems such as “rPa”, “bar”, “mbar”, “mmHg”, “atm”, etc. The unit of the display value can be selectively displayed on the display unit 12b. Here, the external setting information of the numerical system related to pressure set in the memory 19 in the present embodiment is not the numerical value of each unit system itself, but is multiplied by the coefficient (not 1) and the numerical value of each unit system. It became the basic figure which becomes. Therefore, for example, the external setting information regarding the numerical value included in the transmission signal D transmitted from the pressure sensor 10a is also set as the basic numerical value, and the normal setting can be easily performed by setting the memory 19 based on the basic numerical value. It can be carried out.

  (9) Compared to the first embodiment, model information is not included in the transmission signal D, and setting item matching (S27 in FIG. 6) is performed directly without matching by model information (S25 in FIG. 6). There may be.

  (10) In the second embodiment, the configuration is such that both the model information and the version information are matched. However, the present invention is not limited to this, and only one of the model information and the version information is included in the transmission signal D and supported. The configuration may be such that it is stored as device information, and matching is attempted only for either model information or version information.

  (11) In the eighth embodiment, the key lock function is executed on the pressure sensor 10b side based on the key lock activation information included in the transmission signal D from the external device (other pressure sensor 10a). However, the present invention is not limited to this, and the configuration may be such that the key lock function is always executed when the copy operation is executed.

The perspective view of the pressure sensor which concerns on Embodiment 1 of this invention. Block diagram showing the electrical configuration of the pressure sensor (connection to the control device) Block diagram showing the electrical configuration of the pressure sensor (connection between pressure sensors) A flowchart showing a main routine executed by the CPU of the pressure sensor Flowchart showing a copy transmission routine executed by the CPU of the pressure sensor Flowchart showing a copy reception routine executed by the CPU of the pressure sensor Schematic diagram showing the relationship between the data structure of transmission signals and self-setting items 10 is a flowchart illustrating a copy transmission routine executed by the CPU of the pressure sensor according to the second embodiment. A flowchart showing a main routine executed by the CPU of the pressure sensor Schematic diagram showing the relationship between the data structure of the transmission signal and the corresponding device information The block diagram which showed the electrical structure of the pressure sensor of Embodiment 3 (The connection state of pressure sensors) 9 is a flowchart illustrating a copy reception routine executed by the CPU of the pressure sensor according to the fourth embodiment. The block diagram which showed the electrical structure of the pressure sensor of Embodiment 5. The block diagram which showed the electrical structure of the pressure sensor of Embodiment 6. The block diagram which showed the electrical structure of the pressure sensor of Embodiment 7. 9 is a flowchart illustrating a copy reception routine executed by the CPU of the pressure sensor according to the eighth embodiment. The flowchart which shows the main routine which CPU of the pressure sensor of Embodiment 9 performs. Flowchart showing a copy reception routine executed by the CPU of the pressure sensor

Explanation of symbols

10, 40, 50, 60, 70 ... pressure sensor (detection sensor)
12a, 12b ... 1st display part, 2nd display part (1st alerting | reporting means, 2nd alerting | reporting means)
13 ... mode changeover switch (operation means, changeover means, designation means)
14: Up / down switch (operation means, switching means, designation means)
15d ... External connection terminal 17 ... Pressure detection part (detection means)
18 ... CPU (execution means, determination means, control means, normal reception detection means, reset means, prohibition means, release means)
19: Memory (setting information memory, compatible model information memory, correction information memory, initial setting information memory)
20 ... 1st output circuit (transmission means, response means)
21 ... Second output circuit (output means)
21a, 22a, 61a, 62a ... Open / close switch (selection means)
22 ... Input circuit (receiving means)
23. Operation unit (operation means, switching means, release means)
30, 52 ... Control device (external device)
31d: Connection terminal (external device connection terminal)
41. Analog output circuit (output means)
51. Output circuit (output means)
52 ... Control device (setting information output external device)
61 ... Command input circuit (command input means)
62 ... Setting information input circuit (setting information input means)
Sa: Detection signal (output signal)
Sc: Output signal (output signal)
D: Setting information data

Claims (18)

Detection means for detecting a physical quantity change in the detection region;
A setting information memory in which its own setting information is set;
Execution means for executing an operation based on the setting information of the self set in the setting information memory;
Receiving means for receiving a transmission signal including external setting information from an external device;
Determining means for determining whether the transmission signal received from the receiving means includes the external setting information of the same setting items as the setting items of the setting information of the self, and whether or not regular setting to the setting information memory is possible;
Control means for setting the external setting information included in the transmission signal in the setting information memory when it is determined by the determining means that regular setting is possible;
A detection sensor comprising: a first notification unit that performs a notification operation to the outside when the determination unit determines that normal setting is impossible. The control means, when it is determined by the determination means that the transmission signal includes external setting information of the same setting item as its own setting item, the external setting information corresponding to the overlapping setting item 2. The detection sensor according to claim 1, wherein the setting information memory is set. The transmission signal includes external device information including at least one of model information and version information of the external device together with the external setting information,
A compatible device information memory that stores the compatible device information including at least one of the compatible model information and the compatible version information that can be properly set to the self,
The determination means determines whether normal setting is possible for the transmission signal from the external device based on the external device information included in the transmission signal and the corresponding device information stored in the corresponding device information memory. The detection sensor according to claim 1. The corresponding device information stored in the corresponding device information memory includes corresponding device information in which the corresponding model information and the corresponding version information are different from the self,
A correction information memory that stores corresponding device information different from the self and correction information in association with each other,
When the external device information of the external device matches the corresponding device information different from the self, the control means corrects the numerical information of the external setting information corresponding to the corresponding device information different from the self The detection sensor according to claim 3, wherein a numerical value corrected based on information is set in the setting information memory. The setting information memory is capable of setting a plurality of self setting information,
A designation means for designating a part of the self setting information from the plurality of self setting information is provided,
The control means performs setting in the setting information memory only for external setting information included in the transmission signal and corresponding to its own setting information designated by the designation means. The detection sensor according to claim 1. An initial setting information memory for storing initial setting information for the self setting information;
2. A reset means for forcibly initializing its own setting information set in the setting information memory to initial setting information stored in the initial setting information memory. The detection sensor according to claim 5. The detection means detects pressure in the detection region,
The self setting information set in the setting information memory is a basic numerical value related to the pressure value,
A display means,
The execution unit causes the display unit to display a numerical value of a unit system obtained by multiplying a basic numerical value set in the setting information memory by a coefficient corresponding to a unit system selected from a plurality of unit systems. The detection sensor according to claim 1. Transmitting means for transmitting the transmission signal including its own setting information;
A switching means for selectively switching between the master mode and the slave mode is provided,
When the control unit is switched to the slave mode by the switching unit, the control unit receives the transmission signal by the reception unit for a predetermined time after the power is turned on, and executes the determination operation of the determination unit. The detection sensor according to claim 1, wherein: Normal reception detecting means for detecting whether or not the transmission signal from the external device has been normally received;
The detection sensor according to claim 1, further comprising a second notification unit that performs a notification operation according to a detection result of the normal reception detection unit. The detection sensor according to claim 9, further comprising response means for outputting a normal reception completion signal to the external device based on detection of normal reception by the normal reception detection means. 11. The detection sensor according to claim 1, further comprising an operation unit configured to set the setting information of the self in the setting information memory. The detection sensor according to claim 11, further comprising a prohibiting unit that prohibits a setting change by the operation unit with respect to the external setting information set in the setting information memory by the control unit. The transmission signal includes prohibition instruction information for instructing whether to execute a prohibition function,
The prohibiting means prohibits a setting change by the operating means thereafter when the prohibition instruction information included in the transmission signal instructs execution of a prohibition function. 12. The detection sensor according to 12. 14. The detection sensor according to claim 12, further comprising a release unit that cancels the prohibition of the setting change by the prohibiting unit based on a predetermined operation. An output means for outputting an output signal based on a detection result of the detection means;
It is electrically connectable to the connection terminal of the external device, the input side of the receiving means is commonly connected, and the external connection terminal for outputting an output signal from the output means to the external device,
A selection means for selectively enabling the output operation of the output means and the reception operation of the reception means,
When the external device is connected to the external connection terminal and the transmission signal is transmitted from the external device, the control unit activates the reception operation of the reception unit by the selection unit and receives the transmission signal. The detection sensor according to claim 1, wherein the detection sensor is set in the setting information memory. Detection means for detecting a physical quantity change in the detection region;
A setting information memory in which its own setting information is set;
Execution means for executing an operation based on its own setting information set in the setting information memory;
In addition to the self setting information, a transmission means for transmitting a transmission signal including any one of setting items corresponding to the self setting information, own model information, and own version information is provided. A featured detection sensor. The detection sensor according to claim 16, wherein the transmission signal includes prohibition instruction information for instructing whether to execute a prohibition function. A sensor system comprising the detection sensor according to any one of claims 1 to 15 and the detection sensor according to claim 16 or claim 17.

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